Add FLAC to trunk/deps/third_party/....

flac/src/libFLAC/stream_decoder.c

+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007  Josh Coalson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#if defined _MSC_VER || defined __MINGW32__
+#include <io.h> /* for _setmode() */
+#include <fcntl.h> /* for _O_BINARY */
+#endif
+#if defined __CYGWIN__ || defined __EMX__
+#include <io.h> /* for setmode(), O_BINARY */
+#include <fcntl.h> /* for _O_BINARY */
+#endif
+#include <stdio.h>
+#include <stdlib.h> /* for malloc() */
+#include <string.h> /* for memset/memcpy() */
+#include <sys/stat.h> /* for stat() */
+#include <sys/types.h> /* for off_t */
+#if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
+#if _MSC_VER <= 1600 || defined __BORLANDC__ /* @@@ [2G limit] */
+#define fseeko fseek
+#define ftello ftell
+#endif
+#endif
+#include "FLAC/assert.h"
+#include "share/alloc.h"
+#include "protected/stream_decoder.h"
+#include "private/bitreader.h"
+#include "private/bitmath.h"
+#include "private/cpu.h"
+#include "private/crc.h"
+#include "private/fixed.h"
+#include "private/format.h"
+#include "private/lpc.h"
+#include "private/md5.h"
+#include "private/memory.h"
+
+#ifdef max
+#undef max
+#endif
+#define max(a,b) ((a)>(b)?(a):(b))
+
+/* adjust for compilers that can't understand using LLU suffix for uint64_t literals */
+#ifdef _MSC_VER
+#define FLAC__U64L(x) x
+#else
+#define FLAC__U64L(x) x##LLU
+#endif
+
+
+/* technically this should be in an "export.c" but this is convenient enough */
+FLAC_API int FLAC_API_SUPPORTS_OGG_FLAC =
+#if FLAC__HAS_OGG
+        1
+#else
+        0
+#endif
+;
+
+
+/***********************************************************************
+ *
+ * Private static data
+ *
+ ***********************************************************************/
+
+static FLAC__byte ID3V2_TAG_[3] = { 'I', 'D', '3' };
+
+/***********************************************************************
+ *
+ * Private class method prototypes
+ *
+ ***********************************************************************/
+
+static void set_defaults_(FLAC__StreamDecoder *decoder);
+static FILE *get_binary_stdin_(void);
+static FLAC__bool allocate_output_(FLAC__StreamDecoder *decoder, unsigned size, unsigned channels);
+static FLAC__bool has_id_filtered_(FLAC__StreamDecoder *decoder, FLAC__byte *id);
+static FLAC__bool find_metadata_(FLAC__StreamDecoder *decoder);
+static FLAC__bool read_metadata_(FLAC__StreamDecoder *decoder);
+static FLAC__bool read_metadata_streaminfo_(FLAC__StreamDecoder *decoder, FLAC__bool is_last, unsigned length);
+static FLAC__bool read_metadata_seektable_(FLAC__StreamDecoder *decoder, FLAC__bool is_last, unsigned length);
+static FLAC__bool read_metadata_vorbiscomment_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_VorbisComment *obj);
+static FLAC__bool read_metadata_cuesheet_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_CueSheet *obj);
+static FLAC__bool read_metadata_picture_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_Picture *obj);
+static FLAC__bool skip_id3v2_tag_(FLAC__StreamDecoder *decoder);
+static FLAC__bool frame_sync_(FLAC__StreamDecoder *decoder);
+static FLAC__bool read_frame_(FLAC__StreamDecoder *decoder, FLAC__bool *got_a_frame, FLAC__bool do_full_decode);
+static FLAC__bool read_frame_header_(FLAC__StreamDecoder *decoder);
+static FLAC__bool read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode);
+static FLAC__bool read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode);
+static FLAC__bool read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order, FLAC__bool do_full_decode);
+static FLAC__bool read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order, FLAC__bool do_full_decode);
+static FLAC__bool read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode);
+static FLAC__bool read_residual_partitioned_rice_(FLAC__StreamDecoder *decoder, unsigned predictor_order, unsigned partition_order, FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, FLAC__int32 *residual, FLAC__bool is_extended);
+static FLAC__bool read_zero_padding_(FLAC__StreamDecoder *decoder);
+static FLAC__bool read_callback_(FLAC__byte buffer[], size_t *bytes, void *client_data);
+#if FLAC__HAS_OGG
+static FLAC__StreamDecoderReadStatus read_callback_ogg_aspect_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes);
+static FLAC__OggDecoderAspectReadStatus read_callback_proxy_(const void *void_decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+#endif
+static FLAC__StreamDecoderWriteStatus write_audio_frame_to_client_(FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[]);
+static void send_error_to_client_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status);
+static FLAC__bool seek_to_absolute_sample_(FLAC__StreamDecoder *decoder, FLAC__uint64 stream_length, FLAC__uint64 target_sample);
+#if FLAC__HAS_OGG
+static FLAC__bool seek_to_absolute_sample_ogg_(FLAC__StreamDecoder *decoder, FLAC__uint64 stream_length, FLAC__uint64 target_sample);
+#endif
+static FLAC__StreamDecoderReadStatus file_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+static FLAC__StreamDecoderSeekStatus file_seek_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
+static FLAC__StreamDecoderTellStatus file_tell_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
+static FLAC__StreamDecoderLengthStatus file_length_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
+static FLAC__bool file_eof_callback_(const FLAC__StreamDecoder *decoder, void *client_data);
+
+/***********************************************************************
+ *
+ * Private class data
+ *
+ ***********************************************************************/
+
+typedef struct FLAC__StreamDecoderPrivate {
+#if FLAC__HAS_OGG
+        FLAC__bool is_ogg;
+#endif
+        FLAC__StreamDecoderReadCallback read_callback;
+        FLAC__StreamDecoderSeekCallback seek_callback;
+        FLAC__StreamDecoderTellCallback tell_callback;
+        FLAC__StreamDecoderLengthCallback length_callback;
+        FLAC__StreamDecoderEofCallback eof_callback;
+        FLAC__StreamDecoderWriteCallback write_callback;
+        FLAC__StreamDecoderMetadataCallback metadata_callback;
+        FLAC__StreamDecoderErrorCallback error_callback;
+        /* generic 32-bit datapath: */
+        void (*local_lpc_restore_signal)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
+        /* generic 64-bit datapath: */
+        void (*local_lpc_restore_signal_64bit)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
+        /* for use when the signal is <= 16 bits-per-sample, or <= 15 bits-per-sample on a side channel (which requires 1 extra bit): */
+        void (*local_lpc_restore_signal_16bit)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
+        /* for use when the signal is <= 16 bits-per-sample, or <= 15 bits-per-sample on a side channel (which requires 1 extra bit), AND order <= 8: */
+        void (*local_lpc_restore_signal_16bit_order8)(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
+        FLAC__bool (*local_bitreader_read_rice_signed_block)(FLAC__BitReader *br, int vals[], unsigned nvals, unsigned parameter);
+        void *client_data;
+        FILE *file; /* only used if FLAC__stream_decoder_init_file()/FLAC__stream_decoder_init_file() called, else NULL */
+        FLAC__BitReader *input;
+        FLAC__int32 *output[FLAC__MAX_CHANNELS];
+        FLAC__int32 *residual[FLAC__MAX_CHANNELS]; /* WATCHOUT: these are the aligned pointers; the real pointers that should be free()'d are residual_unaligned[] below */
+        FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents[FLAC__MAX_CHANNELS];
+        unsigned output_capacity, output_channels;
+        FLAC__uint32 fixed_block_size, next_fixed_block_size;
+        FLAC__uint64 samples_decoded;
+        FLAC__bool has_stream_info, has_seek_table;
+        FLAC__StreamMetadata stream_info;
+        FLAC__StreamMetadata seek_table;
+        FLAC__bool metadata_filter[128]; /* MAGIC number 128 == total number of metadata block types == 1 << 7 */
+        FLAC__byte *metadata_filter_ids;
+        size_t metadata_filter_ids_count, metadata_filter_ids_capacity; /* units for both are IDs, not bytes */
+        FLAC__Frame frame;
+        FLAC__bool cached; /* true if there is a byte in lookahead */
+        FLAC__CPUInfo cpuinfo;
+        FLAC__byte header_warmup[2]; /* contains the sync code and reserved bits */
+        FLAC__byte lookahead; /* temp storage when we need to look ahead one byte in the stream */
+        /* unaligned (original) pointers to allocated data */
+        FLAC__int32 *residual_unaligned[FLAC__MAX_CHANNELS];
+        FLAC__bool do_md5_checking; /* initially gets protected_->md5_checking but is turned off after a seek or if the metadata has a zero MD5 */
+        FLAC__bool internal_reset_hack; /* used only during init() so we can call reset to set up the decoder without rewinding the input */
+        FLAC__bool is_seeking;
+        FLAC__MD5Context md5context;
+        FLAC__byte computed_md5sum[16]; /* this is the sum we computed from the decoded data */
+        /* (the rest of these are only used for seeking) */
+        FLAC__Frame last_frame; /* holds the info of the last frame we seeked to */
+        FLAC__uint64 first_frame_offset; /* hint to the seek routine of where in the stream the first audio frame starts */
+        FLAC__uint64 target_sample;
+        unsigned unparseable_frame_count; /* used to tell whether we're decoding a future version of FLAC or just got a bad sync */
+#if FLAC__HAS_OGG
+        FLAC__bool got_a_frame; /* hack needed in Ogg FLAC seek routine to check when process_single() actually writes a frame */
+#endif
+} FLAC__StreamDecoderPrivate;
+
+/***********************************************************************
+ *
+ * Public static class data
+ *
+ ***********************************************************************/
+
+FLAC_API const char * const FLAC__StreamDecoderStateString[] = {
+        "FLAC__STREAM_DECODER_SEARCH_FOR_METADATA",
+        "FLAC__STREAM_DECODER_READ_METADATA",
+        "FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC",
+        "FLAC__STREAM_DECODER_READ_FRAME",
+        "FLAC__STREAM_DECODER_END_OF_STREAM",
+        "FLAC__STREAM_DECODER_OGG_ERROR",
+        "FLAC__STREAM_DECODER_SEEK_ERROR",
+        "FLAC__STREAM_DECODER_ABORTED",
+        "FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR",
+        "FLAC__STREAM_DECODER_UNINITIALIZED"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderInitStatusString[] = {
+        "FLAC__STREAM_DECODER_INIT_STATUS_OK",
+        "FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
+        "FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS",
+        "FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR",
+        "FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE",
+        "FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderReadStatusString[] = {
+        "FLAC__STREAM_DECODER_READ_STATUS_CONTINUE",
+        "FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM",
+        "FLAC__STREAM_DECODER_READ_STATUS_ABORT"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderSeekStatusString[] = {
+        "FLAC__STREAM_DECODER_SEEK_STATUS_OK",
+        "FLAC__STREAM_DECODER_SEEK_STATUS_ERROR",
+        "FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderTellStatusString[] = {
+        "FLAC__STREAM_DECODER_TELL_STATUS_OK",
+        "FLAC__STREAM_DECODER_TELL_STATUS_ERROR",
+        "FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderLengthStatusString[] = {
+        "FLAC__STREAM_DECODER_LENGTH_STATUS_OK",
+        "FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR",
+        "FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderWriteStatusString[] = {
+        "FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE",
+        "FLAC__STREAM_DECODER_WRITE_STATUS_ABORT"
+};
+
+FLAC_API const char * const FLAC__StreamDecoderErrorStatusString[] = {
+        "FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC",
+        "FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER",
+        "FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH",
+        "FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM"
+};
+
+/***********************************************************************
+ *
+ * Class constructor/destructor
+ *
+ ***********************************************************************/
+FLAC_API FLAC__StreamDecoder *FLAC__stream_decoder_new(void)
+{
+        FLAC__StreamDecoder *decoder;
+        unsigned i;
+
+        FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
+
+        decoder = (FLAC__StreamDecoder*)calloc(1, sizeof(FLAC__StreamDecoder));
+        if(decoder == 0) {
+                return 0;
+        }
+
+        decoder->protected_ = (FLAC__StreamDecoderProtected*)calloc(1, sizeof(FLAC__StreamDecoderProtected));
+        if(decoder->protected_ == 0) {
+                free(decoder);
+                return 0;
+        }
+
+        decoder->private_ = (FLAC__StreamDecoderPrivate*)calloc(1, sizeof(FLAC__StreamDecoderPrivate));
+        if(decoder->private_ == 0) {
+                free(decoder->protected_);
+                free(decoder);
+                return 0;
+        }
+
+        decoder->private_->input = FLAC__bitreader_new();
+        if(decoder->private_->input == 0) {
+                free(decoder->private_);
+                free(decoder->protected_);
+                free(decoder);
+                return 0;
+        }
+
+        decoder->private_->metadata_filter_ids_capacity = 16;
+        if(0 == (decoder->private_->metadata_filter_ids = (FLAC__byte*)malloc((FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8) * decoder->private_->metadata_filter_ids_capacity))) {
+                FLAC__bitreader_delete(decoder->private_->input);
+                free(decoder->private_);
+                free(decoder->protected_);
+                free(decoder);
+                return 0;
+        }
+
+        for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+                decoder->private_->output[i] = 0;
+                decoder->private_->residual_unaligned[i] = decoder->private_->residual[i] = 0;
+        }
+
+        decoder->private_->output_capacity = 0;
+        decoder->private_->output_channels = 0;
+        decoder->private_->has_seek_table = false;
+
+        for(i = 0; i < FLAC__MAX_CHANNELS; i++)
+                FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&decoder->private_->partitioned_rice_contents[i]);
+
+        decoder->private_->file = 0;
+
+        set_defaults_(decoder);
+
+        decoder->protected_->state = FLAC__STREAM_DECODER_UNINITIALIZED;
+
+        return decoder;
+}
+
+FLAC_API void FLAC__stream_decoder_delete(FLAC__StreamDecoder *decoder)
+{
+        unsigned i;
+
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->private_->input);
+
+        (void)FLAC__stream_decoder_finish(decoder);
+
+        if(0 != decoder->private_->metadata_filter_ids)
+                free(decoder->private_->metadata_filter_ids);
+
+        FLAC__bitreader_delete(decoder->private_->input);
+
+        for(i = 0; i < FLAC__MAX_CHANNELS; i++)
+                FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&decoder->private_->partitioned_rice_contents[i]);
+
+        free(decoder->private_);
+        free(decoder->protected_);
+        free(decoder);
+}
+
+/***********************************************************************
+ *
+ * Public class methods
+ *
+ ***********************************************************************/
+
+static FLAC__StreamDecoderInitStatus init_stream_internal_(
+        FLAC__StreamDecoder *decoder,
+        FLAC__StreamDecoderReadCallback read_callback,
+        FLAC__StreamDecoderSeekCallback seek_callback,
+        FLAC__StreamDecoderTellCallback tell_callback,
+        FLAC__StreamDecoderLengthCallback length_callback,
+        FLAC__StreamDecoderEofCallback eof_callback,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data,
+        FLAC__bool is_ogg
+)
+{
+        FLAC__ASSERT(0 != decoder);
+
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+#if !FLAC__HAS_OGG
+        if(is_ogg)
+                return FLAC__STREAM_DECODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
+#endif
+
+        if(
+                0 == read_callback ||
+                0 == write_callback ||
+                0 == error_callback ||
+                (seek_callback && (0 == tell_callback || 0 == length_callback || 0 == eof_callback))
+        )
+                return FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS;
+
+#if FLAC__HAS_OGG
+        decoder->private_->is_ogg = is_ogg;
+        if(is_ogg && !FLAC__ogg_decoder_aspect_init(&decoder->protected_->ogg_decoder_aspect))
+                return decoder->protected_->state = FLAC__STREAM_DECODER_OGG_ERROR;
+#endif
+
+        /*
+         * get the CPU info and set the function pointers
+         */
+        FLAC__cpu_info(&decoder->private_->cpuinfo);
+        /* first default to the non-asm routines */
+        decoder->private_->local_lpc_restore_signal = FLAC__lpc_restore_signal;
+        decoder->private_->local_lpc_restore_signal_64bit = FLAC__lpc_restore_signal_wide;
+        decoder->private_->local_lpc_restore_signal_16bit = FLAC__lpc_restore_signal;
+        decoder->private_->local_lpc_restore_signal_16bit_order8 = FLAC__lpc_restore_signal;
+        decoder->private_->local_bitreader_read_rice_signed_block = FLAC__bitreader_read_rice_signed_block;
+        /* now override with asm where appropriate */
+#ifndef FLAC__NO_ASM
+        if(decoder->private_->cpuinfo.use_asm) {
+#ifdef FLAC__CPU_IA32
+                FLAC__ASSERT(decoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
+#ifdef FLAC__HAS_NASM
+#if 1 /*@@@@@@ OPT: not clearly faster, needs more testing */
+                if(decoder->private_->cpuinfo.data.ia32.bswap)
+                        decoder->private_->local_bitreader_read_rice_signed_block = FLAC__bitreader_read_rice_signed_block_asm_ia32_bswap;
+#endif
+                if(decoder->private_->cpuinfo.data.ia32.mmx) {
+                        decoder->private_->local_lpc_restore_signal = FLAC__lpc_restore_signal_asm_ia32;
+                        decoder->private_->local_lpc_restore_signal_16bit = FLAC__lpc_restore_signal_asm_ia32_mmx;
+                        decoder->private_->local_lpc_restore_signal_16bit_order8 = FLAC__lpc_restore_signal_asm_ia32_mmx;
+                }
+                else {
+                        decoder->private_->local_lpc_restore_signal = FLAC__lpc_restore_signal_asm_ia32;
+                        decoder->private_->local_lpc_restore_signal_16bit = FLAC__lpc_restore_signal_asm_ia32;
+                        decoder->private_->local_lpc_restore_signal_16bit_order8 = FLAC__lpc_restore_signal_asm_ia32;
+                }
+#endif
+#elif defined FLAC__CPU_PPC
+                FLAC__ASSERT(decoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_PPC);
+                if(decoder->private_->cpuinfo.data.ppc.altivec) {
+                        decoder->private_->local_lpc_restore_signal_16bit = FLAC__lpc_restore_signal_asm_ppc_altivec_16;
+                        decoder->private_->local_lpc_restore_signal_16bit_order8 = FLAC__lpc_restore_signal_asm_ppc_altivec_16_order8;
+                }
+#endif
+        }
+#endif
+
+        /* from here on, errors are fatal */
+
+        if(!FLAC__bitreader_init(decoder->private_->input, decoder->private_->cpuinfo, read_callback_, decoder)) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR;
+        }
+
+        decoder->private_->read_callback = read_callback;
+        decoder->private_->seek_callback = seek_callback;
+        decoder->private_->tell_callback = tell_callback;
+        decoder->private_->length_callback = length_callback;
+        decoder->private_->eof_callback = eof_callback;
+        decoder->private_->write_callback = write_callback;
+        decoder->private_->metadata_callback = metadata_callback;
+        decoder->private_->error_callback = error_callback;
+        decoder->private_->client_data = client_data;
+        decoder->private_->fixed_block_size = decoder->private_->next_fixed_block_size = 0;
+        decoder->private_->samples_decoded = 0;
+        decoder->private_->has_stream_info = false;
+        decoder->private_->cached = false;
+
+        decoder->private_->do_md5_checking = decoder->protected_->md5_checking;
+        decoder->private_->is_seeking = false;
+
+        decoder->private_->internal_reset_hack = true; /* so the following reset does not try to rewind the input */
+        if(!FLAC__stream_decoder_reset(decoder)) {
+                /* above call sets the state for us */
+                return FLAC__STREAM_DECODER_INIT_STATUS_MEMORY_ALLOCATION_ERROR;
+        }
+
+        return FLAC__STREAM_DECODER_INIT_STATUS_OK;
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_stream(
+        FLAC__StreamDecoder *decoder,
+        FLAC__StreamDecoderReadCallback read_callback,
+        FLAC__StreamDecoderSeekCallback seek_callback,
+        FLAC__StreamDecoderTellCallback tell_callback,
+        FLAC__StreamDecoderLengthCallback length_callback,
+        FLAC__StreamDecoderEofCallback eof_callback,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_stream_internal_(
+                decoder,
+                read_callback,
+                seek_callback,
+                tell_callback,
+                length_callback,
+                eof_callback,
+                write_callback,
+                metadata_callback,
+                error_callback,
+                client_data,
+                /*is_ogg=*/false
+        );
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_ogg_stream(
+        FLAC__StreamDecoder *decoder,
+        FLAC__StreamDecoderReadCallback read_callback,
+        FLAC__StreamDecoderSeekCallback seek_callback,
+        FLAC__StreamDecoderTellCallback tell_callback,
+        FLAC__StreamDecoderLengthCallback length_callback,
+        FLAC__StreamDecoderEofCallback eof_callback,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_stream_internal_(
+                decoder,
+                read_callback,
+                seek_callback,
+                tell_callback,
+                length_callback,
+                eof_callback,
+                write_callback,
+                metadata_callback,
+                error_callback,
+                client_data,
+                /*is_ogg=*/true
+        );
+}
+
+static FLAC__StreamDecoderInitStatus init_FILE_internal_(
+        FLAC__StreamDecoder *decoder,
+        FILE *file,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data,
+        FLAC__bool is_ogg
+)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != file);
+
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return decoder->protected_->state = FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+        if(0 == write_callback || 0 == error_callback)
+                return decoder->protected_->state = FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS;
+
+        /*
+         * To make sure that our file does not go unclosed after an error, we
+         * must assign the FILE pointer before any further error can occur in
+         * this routine.
+         */
+        if(file == stdin)
+                file = get_binary_stdin_(); /* just to be safe */
+
+        decoder->private_->file = file;
+
+        return init_stream_internal_(
+                decoder,
+                file_read_callback_,
+                decoder->private_->file == stdin? 0: file_seek_callback_,
+                decoder->private_->file == stdin? 0: file_tell_callback_,
+                decoder->private_->file == stdin? 0: file_length_callback_,
+                file_eof_callback_,
+                write_callback,
+                metadata_callback,
+                error_callback,
+                client_data,
+                is_ogg
+        );
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_FILE(
+        FLAC__StreamDecoder *decoder,
+        FILE *file,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_FILE_internal_(decoder, file, write_callback, metadata_callback, error_callback, client_data, /*is_ogg=*/false);
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_ogg_FILE(
+        FLAC__StreamDecoder *decoder,
+        FILE *file,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_FILE_internal_(decoder, file, write_callback, metadata_callback, error_callback, client_data, /*is_ogg=*/true);
+}
+
+static FLAC__StreamDecoderInitStatus init_file_internal_(
+        FLAC__StreamDecoder *decoder,
+        const char *filename,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data,
+        FLAC__bool is_ogg
+)
+{
+        FILE *file;
+
+        FLAC__ASSERT(0 != decoder);
+
+        /*
+         * To make sure that our file does not go unclosed after an error, we
+         * have to do the same entrance checks here that are later performed
+         * in FLAC__stream_decoder_init_FILE() before the FILE* is assigned.
+         */
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return decoder->protected_->state = FLAC__STREAM_DECODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+        if(0 == write_callback || 0 == error_callback)
+                return decoder->protected_->state = FLAC__STREAM_DECODER_INIT_STATUS_INVALID_CALLBACKS;
+
+        file = filename? fopen(filename, "rb") : stdin;
+
+        if(0 == file)
+                return FLAC__STREAM_DECODER_INIT_STATUS_ERROR_OPENING_FILE;
+
+        return init_FILE_internal_(decoder, file, write_callback, metadata_callback, error_callback, client_data, is_ogg);
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_file(
+        FLAC__StreamDecoder *decoder,
+        const char *filename,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_file_internal_(decoder, filename, write_callback, metadata_callback, error_callback, client_data, /*is_ogg=*/false);
+}
+
+FLAC_API FLAC__StreamDecoderInitStatus FLAC__stream_decoder_init_ogg_file(
+        FLAC__StreamDecoder *decoder,
+        const char *filename,
+        FLAC__StreamDecoderWriteCallback write_callback,
+        FLAC__StreamDecoderMetadataCallback metadata_callback,
+        FLAC__StreamDecoderErrorCallback error_callback,
+        void *client_data
+)
+{
+        return init_file_internal_(decoder, filename, write_callback, metadata_callback, error_callback, client_data, /*is_ogg=*/true);
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_finish(FLAC__StreamDecoder *decoder)
+{
+        FLAC__bool md5_failed = false;
+        unsigned i;
+
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        if(decoder->protected_->state == FLAC__STREAM_DECODER_UNINITIALIZED)
+                return true;
+
+        /* see the comment in FLAC__seekable_stream_decoder_reset() as to why we
+         * always call FLAC__MD5Final()
+         */
+        FLAC__MD5Final(decoder->private_->computed_md5sum, &decoder->private_->md5context);
+
+        if(decoder->private_->has_seek_table && 0 != decoder->private_->seek_table.data.seek_table.points) {
+                free(decoder->private_->seek_table.data.seek_table.points);
+                decoder->private_->seek_table.data.seek_table.points = 0;
+                decoder->private_->has_seek_table = false;
+        }
+        FLAC__bitreader_free(decoder->private_->input);
+        for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+                /* WATCHOUT:
+                 * FLAC__lpc_restore_signal_asm_ia32_mmx() requires that the
+                 * output arrays have a buffer of up to 3 zeroes in front
+                 * (at negative indices) for alignment purposes; we use 4
+                 * to keep the data well-aligned.
+                 */
+                if(0 != decoder->private_->output[i]) {
+                        free(decoder->private_->output[i]-4);
+                        decoder->private_->output[i] = 0;
+                }
+                if(0 != decoder->private_->residual_unaligned[i]) {
+                        free(decoder->private_->residual_unaligned[i]);
+                        decoder->private_->residual_unaligned[i] = decoder->private_->residual[i] = 0;
+                }
+        }
+        decoder->private_->output_capacity = 0;
+        decoder->private_->output_channels = 0;
+
+#if FLAC__HAS_OGG
+        if(decoder->private_->is_ogg)
+                FLAC__ogg_decoder_aspect_finish(&decoder->protected_->ogg_decoder_aspect);
+#endif
+
+        if(0 != decoder->private_->file) {
+                if(decoder->private_->file != stdin)
+                        fclose(decoder->private_->file);
+                decoder->private_->file = 0;
+        }
+
+        if(decoder->private_->do_md5_checking) {
+                if(memcmp(decoder->private_->stream_info.data.stream_info.md5sum, decoder->private_->computed_md5sum, 16))
+                        md5_failed = true;
+        }
+        decoder->private_->is_seeking = false;
+
+        set_defaults_(decoder);
+
+        decoder->protected_->state = FLAC__STREAM_DECODER_UNINITIALIZED;
+
+        return !md5_failed;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_ogg_serial_number(FLAC__StreamDecoder *decoder, long value)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+#if FLAC__HAS_OGG
+        /* can't check decoder->private_->is_ogg since that's not set until init time */
+        FLAC__ogg_decoder_aspect_set_serial_number(&decoder->protected_->ogg_decoder_aspect, value);
+        return true;
+#else
+        (void)value;
+        return false;
+#endif
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_md5_checking(FLAC__StreamDecoder *decoder, FLAC__bool value)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+        decoder->protected_->md5_checking = value;
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_respond(FLAC__StreamDecoder *decoder, FLAC__MetadataType type)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        FLAC__ASSERT((unsigned)type <= FLAC__MAX_METADATA_TYPE_CODE);
+        /* double protection */
+        if((unsigned)type > FLAC__MAX_METADATA_TYPE_CODE)
+                return false;
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+        decoder->private_->metadata_filter[type] = true;
+        if(type == FLAC__METADATA_TYPE_APPLICATION)
+                decoder->private_->metadata_filter_ids_count = 0;
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_respond_application(FLAC__StreamDecoder *decoder, const FLAC__byte id[4])
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        FLAC__ASSERT(0 != id);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+
+        if(decoder->private_->metadata_filter[FLAC__METADATA_TYPE_APPLICATION])
+                return true;
+
+        FLAC__ASSERT(0 != decoder->private_->metadata_filter_ids);
+
+        if(decoder->private_->metadata_filter_ids_count == decoder->private_->metadata_filter_ids_capacity) {
+                if(0 == (decoder->private_->metadata_filter_ids = (FLAC__byte*)safe_realloc_mul_2op_(decoder->private_->metadata_filter_ids, decoder->private_->metadata_filter_ids_capacity, /*times*/2))) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                decoder->private_->metadata_filter_ids_capacity *= 2;
+        }
+
+        memcpy(decoder->private_->metadata_filter_ids + decoder->private_->metadata_filter_ids_count * (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8), id, (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8));
+        decoder->private_->metadata_filter_ids_count++;
+
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_respond_all(FLAC__StreamDecoder *decoder)
+{
+        unsigned i;
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+        for(i = 0; i < sizeof(decoder->private_->metadata_filter) / sizeof(decoder->private_->metadata_filter[0]); i++)
+                decoder->private_->metadata_filter[i] = true;
+        decoder->private_->metadata_filter_ids_count = 0;
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_ignore(FLAC__StreamDecoder *decoder, FLAC__MetadataType type)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        FLAC__ASSERT((unsigned)type <= FLAC__MAX_METADATA_TYPE_CODE);
+        /* double protection */
+        if((unsigned)type > FLAC__MAX_METADATA_TYPE_CODE)
+                return false;
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+        decoder->private_->metadata_filter[type] = false;
+        if(type == FLAC__METADATA_TYPE_APPLICATION)
+                decoder->private_->metadata_filter_ids_count = 0;
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_ignore_application(FLAC__StreamDecoder *decoder, const FLAC__byte id[4])
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        FLAC__ASSERT(0 != id);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+
+        if(!decoder->private_->metadata_filter[FLAC__METADATA_TYPE_APPLICATION])
+                return true;
+
+        FLAC__ASSERT(0 != decoder->private_->metadata_filter_ids);
+
+        if(decoder->private_->metadata_filter_ids_count == decoder->private_->metadata_filter_ids_capacity) {
+                if(0 == (decoder->private_->metadata_filter_ids = (FLAC__byte*)safe_realloc_mul_2op_(decoder->private_->metadata_filter_ids, decoder->private_->metadata_filter_ids_capacity, /*times*/2))) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                decoder->private_->metadata_filter_ids_capacity *= 2;
+        }
+
+        memcpy(decoder->private_->metadata_filter_ids + decoder->private_->metadata_filter_ids_count * (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8), id, (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8));
+        decoder->private_->metadata_filter_ids_count++;
+
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_set_metadata_ignore_all(FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+        if(decoder->protected_->state != FLAC__STREAM_DECODER_UNINITIALIZED)
+                return false;
+        memset(decoder->private_->metadata_filter, 0, sizeof(decoder->private_->metadata_filter));
+        decoder->private_->metadata_filter_ids_count = 0;
+        return true;
+}
+
+FLAC_API FLAC__StreamDecoderState FLAC__stream_decoder_get_state(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->state;
+}
+
+FLAC_API const char *FLAC__stream_decoder_get_resolved_state_string(const FLAC__StreamDecoder *decoder)
+{
+        return FLAC__StreamDecoderStateString[decoder->protected_->state];
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_get_md5_checking(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->md5_checking;
+}
+
+FLAC_API FLAC__uint64 FLAC__stream_decoder_get_total_samples(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->private_->has_stream_info? decoder->private_->stream_info.data.stream_info.total_samples : 0;
+}
+
+FLAC_API unsigned FLAC__stream_decoder_get_channels(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->channels;
+}
+
+FLAC_API FLAC__ChannelAssignment FLAC__stream_decoder_get_channel_assignment(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->channel_assignment;
+}
+
+FLAC_API unsigned FLAC__stream_decoder_get_bits_per_sample(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->bits_per_sample;
+}
+
+FLAC_API unsigned FLAC__stream_decoder_get_sample_rate(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->sample_rate;
+}
+
+FLAC_API unsigned FLAC__stream_decoder_get_blocksize(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+        return decoder->protected_->blocksize;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_get_decode_position(const FLAC__StreamDecoder *decoder, FLAC__uint64 *position)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != position);
+
+#if FLAC__HAS_OGG
+        if(decoder->private_->is_ogg)
+                return false;
+#endif
+        if(0 == decoder->private_->tell_callback)
+                return false;
+        if(decoder->private_->tell_callback(decoder, position, decoder->private_->client_data) != FLAC__STREAM_DECODER_TELL_STATUS_OK)
+                return false;
+        /* should never happen since all FLAC frames and metadata blocks are byte aligned, but check just in case */
+        if(!FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input))
+                return false;
+        FLAC__ASSERT(*position >= FLAC__stream_decoder_get_input_bytes_unconsumed(decoder));
+        *position -= FLAC__stream_decoder_get_input_bytes_unconsumed(decoder);
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_flush(FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        decoder->private_->samples_decoded = 0;
+        decoder->private_->do_md5_checking = false;
+
+#if FLAC__HAS_OGG
+        if(decoder->private_->is_ogg)
+                FLAC__ogg_decoder_aspect_flush(&decoder->protected_->ogg_decoder_aspect);
+#endif
+
+        if(!FLAC__bitreader_clear(decoder->private_->input)) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_reset(FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        if(!FLAC__stream_decoder_flush(decoder)) {
+                /* above call sets the state for us */
+                return false;
+        }
+
+#if FLAC__HAS_OGG
+        /*@@@ could go in !internal_reset_hack block below */
+        if(decoder->private_->is_ogg)
+                FLAC__ogg_decoder_aspect_reset(&decoder->protected_->ogg_decoder_aspect);
+#endif
+
+        /* Rewind if necessary.  If FLAC__stream_decoder_init() is calling us,
+         * (internal_reset_hack) don't try to rewind since we are already at
+         * the beginning of the stream and don't want to fail if the input is
+         * not seekable.
+         */
+        if(!decoder->private_->internal_reset_hack) {
+                if(decoder->private_->file == stdin)
+                        return false; /* can't rewind stdin, reset fails */
+                if(decoder->private_->seek_callback && decoder->private_->seek_callback(decoder, 0, decoder->private_->client_data) == FLAC__STREAM_DECODER_SEEK_STATUS_ERROR)
+                        return false; /* seekable and seek fails, reset fails */
+        }
+        else
+                decoder->private_->internal_reset_hack = false;
+
+        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_METADATA;
+
+        decoder->private_->has_stream_info = false;
+        if(decoder->private_->has_seek_table && 0 != decoder->private_->seek_table.data.seek_table.points) {
+                free(decoder->private_->seek_table.data.seek_table.points);
+                decoder->private_->seek_table.data.seek_table.points = 0;
+                decoder->private_->has_seek_table = false;
+        }
+        decoder->private_->do_md5_checking = decoder->protected_->md5_checking;
+        /*
+         * This goes in reset() and not flush() because according to the spec, a
+         * fixed-blocksize stream must stay that way through the whole stream.
+         */
+        decoder->private_->fixed_block_size = decoder->private_->next_fixed_block_size = 0;
+
+        /* We initialize the FLAC__MD5Context even though we may never use it.  This
+         * is because md5 checking may be turned on to start and then turned off if
+         * a seek occurs.  So we init the context here and finalize it in
+         * FLAC__stream_decoder_finish() to make sure things are always cleaned up
+         * properly.
+         */
+        FLAC__MD5Init(&decoder->private_->md5context);
+
+        decoder->private_->first_frame_offset = 0;
+        decoder->private_->unparseable_frame_count = 0;
+
+        return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_process_single(FLAC__StreamDecoder *decoder)
+{
+        FLAC__bool got_a_frame;
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        while(1) {
+                switch(decoder->protected_->state) {
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+                                if(!find_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_METADATA:
+                                if(!read_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                else
+                                        return true;
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+                                if(!frame_sync_(decoder))
+                                        return true; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_FRAME:
+                                if(!read_frame_(decoder, &got_a_frame, /*do_full_decode=*/true))
+                                        return false; /* above function sets the status for us */
+                                if(got_a_frame)
+                                        return true; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_END_OF_STREAM:
+                        case FLAC__STREAM_DECODER_ABORTED:
+                                return true;
+                        default:
+                                FLAC__ASSERT(0);
+                                return false;
+                }
+        }
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_process_until_end_of_metadata(FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        while(1) {
+                switch(decoder->protected_->state) {
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+                                if(!find_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_METADATA:
+                                if(!read_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+                        case FLAC__STREAM_DECODER_READ_FRAME:
+                        case FLAC__STREAM_DECODER_END_OF_STREAM:
+                        case FLAC__STREAM_DECODER_ABORTED:
+                                return true;
+                        default:
+                                FLAC__ASSERT(0);
+                                return false;
+                }
+        }
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_process_until_end_of_stream(FLAC__StreamDecoder *decoder)
+{
+        FLAC__bool dummy;
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        while(1) {
+                switch(decoder->protected_->state) {
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+                                if(!find_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_METADATA:
+                                if(!read_metadata_(decoder))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+                                if(!frame_sync_(decoder))
+                                        return true; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_FRAME:
+                                if(!read_frame_(decoder, &dummy, /*do_full_decode=*/true))
+                                        return false; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_END_OF_STREAM:
+                        case FLAC__STREAM_DECODER_ABORTED:
+                                return true;
+                        default:
+                                FLAC__ASSERT(0);
+                                return false;
+                }
+        }
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_skip_single_frame(FLAC__StreamDecoder *decoder)
+{
+        FLAC__bool got_a_frame;
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->protected_);
+
+        while(1) {
+                switch(decoder->protected_->state) {
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+                        case FLAC__STREAM_DECODER_READ_METADATA:
+                                return false; /* above function sets the status for us */
+                        case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+                                if(!frame_sync_(decoder))
+                                        return true; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_READ_FRAME:
+                                if(!read_frame_(decoder, &got_a_frame, /*do_full_decode=*/false))
+                                        return false; /* above function sets the status for us */
+                                if(got_a_frame)
+                                        return true; /* above function sets the status for us */
+                                break;
+                        case FLAC__STREAM_DECODER_END_OF_STREAM:
+                        case FLAC__STREAM_DECODER_ABORTED:
+                                return true;
+                        default:
+                                FLAC__ASSERT(0);
+                                return false;
+                }
+        }
+}
+
+FLAC_API FLAC__bool FLAC__stream_decoder_seek_absolute(FLAC__StreamDecoder *decoder, FLAC__uint64 sample)
+{
+        FLAC__uint64 length;
+
+        FLAC__ASSERT(0 != decoder);
+
+        if(
+                decoder->protected_->state != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA &&
+                decoder->protected_->state != FLAC__STREAM_DECODER_READ_METADATA &&
+                decoder->protected_->state != FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC &&
+                decoder->protected_->state != FLAC__STREAM_DECODER_READ_FRAME &&
+                decoder->protected_->state != FLAC__STREAM_DECODER_END_OF_STREAM
+        )
+                return false;
+
+        if(0 == decoder->private_->seek_callback)
+                return false;
+
+        FLAC__ASSERT(decoder->private_->seek_callback);
+        FLAC__ASSERT(decoder->private_->tell_callback);
+        FLAC__ASSERT(decoder->private_->length_callback);
+        FLAC__ASSERT(decoder->private_->eof_callback);
+
+        if(FLAC__stream_decoder_get_total_samples(decoder) > 0 && sample >= FLAC__stream_decoder_get_total_samples(decoder))
+                return false;
+
+        decoder->private_->is_seeking = true;
+
+        /* turn off md5 checking if a seek is attempted */
+        decoder->private_->do_md5_checking = false;
+
+        /* get the file length (currently our algorithm needs to know the length so it's also an error to get FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED) */
+        if(decoder->private_->length_callback(decoder, &length, decoder->private_->client_data) != FLAC__STREAM_DECODER_LENGTH_STATUS_OK) {
+                decoder->private_->is_seeking = false;
+                return false;
+        }
+
+        /* if we haven't finished processing the metadata yet, do that so we have the STREAMINFO, SEEK_TABLE, and first_frame_offset */
+        if(
+                decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_METADATA ||
+                decoder->protected_->state == FLAC__STREAM_DECODER_READ_METADATA
+        ) {
+                if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder)) {
+                        /* above call sets the state for us */
+                        decoder->private_->is_seeking = false;
+                        return false;
+                }
+                /* check this again in case we didn't know total_samples the first time */
+                if(FLAC__stream_decoder_get_total_samples(decoder) > 0 && sample >= FLAC__stream_decoder_get_total_samples(decoder)) {
+                        decoder->private_->is_seeking = false;
+                        return false;
+                }
+        }
+
+        {
+                const FLAC__bool ok =
+#if FLAC__HAS_OGG
+                        decoder->private_->is_ogg?
+                        seek_to_absolute_sample_ogg_(decoder, length, sample) :
+#endif
+                        seek_to_absolute_sample_(decoder, length, sample)
+                ;
+                decoder->private_->is_seeking = false;
+                return ok;
+        }
+}
+
+/***********************************************************************
+ *
+ * Protected class methods
+ *
+ ***********************************************************************/
+
+unsigned FLAC__stream_decoder_get_input_bytes_unconsumed(const FLAC__StreamDecoder *decoder)
+{
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+        FLAC__ASSERT(!(FLAC__bitreader_get_input_bits_unconsumed(decoder->private_->input) & 7));
+        return FLAC__bitreader_get_input_bits_unconsumed(decoder->private_->input) / 8;
+}
+
+/***********************************************************************
+ *
+ * Private class methods
+ *
+ ***********************************************************************/
+
+void set_defaults_(FLAC__StreamDecoder *decoder)
+{
+#if FLAC__HAS_OGG
+        decoder->private_->is_ogg = false;
+#endif
+        decoder->private_->read_callback = 0;
+        decoder->private_->seek_callback = 0;
+        decoder->private_->tell_callback = 0;
+        decoder->private_->length_callback = 0;
+        decoder->private_->eof_callback = 0;
+        decoder->private_->write_callback = 0;
+        decoder->private_->metadata_callback = 0;
+        decoder->private_->error_callback = 0;
+        decoder->private_->client_data = 0;
+
+        memset(decoder->private_->metadata_filter, 0, sizeof(decoder->private_->metadata_filter));
+        decoder->private_->metadata_filter[FLAC__METADATA_TYPE_STREAMINFO] = true;
+        decoder->private_->metadata_filter_ids_count = 0;
+
+        decoder->protected_->md5_checking = false;
+
+#if FLAC__HAS_OGG
+        FLAC__ogg_decoder_aspect_set_defaults(&decoder->protected_->ogg_decoder_aspect);
+#endif
+}
+
+/*
+ * This will forcibly set stdin to binary mode (for OSes that require it)
+ */
+FILE *get_binary_stdin_(void)
+{
+        /* if something breaks here it is probably due to the presence or
+         * absence of an underscore before the identifiers 'setmode',
+         * 'fileno', and/or 'O_BINARY'; check your system header files.
+         */
+#if defined _MSC_VER || defined __MINGW32__
+        _setmode(_fileno(stdin), _O_BINARY);
+#elif defined __CYGWIN__ 
+        /* almost certainly not needed for any modern Cygwin, but let's be safe... */
+        setmode(_fileno(stdin), _O_BINARY);
+#elif defined __EMX__
+        setmode(fileno(stdin), O_BINARY);
+#endif
+
+        return stdin;
+}
+
+FLAC__bool allocate_output_(FLAC__StreamDecoder *decoder, unsigned size, unsigned channels)
+{
+        unsigned i;
+        FLAC__int32 *tmp;
+
+        if(size <= decoder->private_->output_capacity && channels <= decoder->private_->output_channels)
+                return true;
+
+        /* simply using realloc() is not practical because the number of channels may change mid-stream */
+
+        for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+                if(0 != decoder->private_->output[i]) {
+                        free(decoder->private_->output[i]-4);
+                        decoder->private_->output[i] = 0;
+                }
+                if(0 != decoder->private_->residual_unaligned[i]) {
+                        free(decoder->private_->residual_unaligned[i]);
+                        decoder->private_->residual_unaligned[i] = decoder->private_->residual[i] = 0;
+                }
+        }
+
+        for(i = 0; i < channels; i++) {
+                /* WATCHOUT:
+                 * FLAC__lpc_restore_signal_asm_ia32_mmx() requires that the
+                 * output arrays have a buffer of up to 3 zeroes in front
+                 * (at negative indices) for alignment purposes; we use 4
+                 * to keep the data well-aligned.
+                 */
+                tmp = (FLAC__int32*)safe_malloc_muladd2_(sizeof(FLAC__int32), /*times (*/size, /*+*/4/*)*/);
+                if(tmp == 0) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                memset(tmp, 0, sizeof(FLAC__int32)*4);
+                decoder->private_->output[i] = tmp + 4;
+
+                /* WATCHOUT:
+                 * minimum of quadword alignment for PPC vector optimizations is REQUIRED:
+                 */
+                if(!FLAC__memory_alloc_aligned_int32_array(size, &decoder->private_->residual_unaligned[i], &decoder->private_->residual[i])) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+        }
+
+        decoder->private_->output_capacity = size;
+        decoder->private_->output_channels = channels;
+
+        return true;
+}
+
+FLAC__bool has_id_filtered_(FLAC__StreamDecoder *decoder, FLAC__byte *id)
+{
+        size_t i;
+
+        FLAC__ASSERT(0 != decoder);
+        FLAC__ASSERT(0 != decoder->private_);
+
+        for(i = 0; i < decoder->private_->metadata_filter_ids_count; i++)
+                if(0 == memcmp(decoder->private_->metadata_filter_ids + i * (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8), id, (FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8)))
+                        return true;
+
+        return false;
+}
+
+FLAC__bool find_metadata_(FLAC__StreamDecoder *decoder)
+{
+        FLAC__uint32 x;
+        unsigned i, id;
+        FLAC__bool first = true;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        for(i = id = 0; i < 4; ) {
+                if(decoder->private_->cached) {
+                        x = (FLAC__uint32)decoder->private_->lookahead;
+                        decoder->private_->cached = false;
+                }
+                else {
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                                return false; /* read_callback_ sets the state for us */
+                }
+                if(x == FLAC__STREAM_SYNC_STRING[i]) {
+                        first = true;
+                        i++;
+                        id = 0;
+                        continue;
+                }
+                if(x == ID3V2_TAG_[id]) {
+                        id++;
+                        i = 0;
+                        if(id == 3) {
+                                if(!skip_id3v2_tag_(decoder))
+                                        return false; /* skip_id3v2_tag_ sets the state for us */
+                        }
+                        continue;
+                }
+                id = 0;
+                if(x == 0xff) { /* MAGIC NUMBER for the first 8 frame sync bits */
+                        decoder->private_->header_warmup[0] = (FLAC__byte)x;
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                                return false; /* read_callback_ sets the state for us */
+
+                        /* we have to check if we just read two 0xff's in a row; the second may actually be the beginning of the sync code */
+                        /* else we have to check if the second byte is the end of a sync code */
+                        if(x == 0xff) { /* MAGIC NUMBER for the first 8 frame sync bits */
+                                decoder->private_->lookahead = (FLAC__byte)x;
+                                decoder->private_->cached = true;
+                        }
+                        else if(x >> 2 == 0x3e) { /* MAGIC NUMBER for the last 6 sync bits */
+                                decoder->private_->header_warmup[1] = (FLAC__byte)x;
+                                decoder->protected_->state = FLAC__STREAM_DECODER_READ_FRAME;
+                                return true;
+                        }
+                }
+                i = 0;
+                if(first) {
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                        first = false;
+                }
+        }
+
+        decoder->protected_->state = FLAC__STREAM_DECODER_READ_METADATA;
+        return true;
+}
+
+FLAC__bool read_metadata_(FLAC__StreamDecoder *decoder)
+{
+        FLAC__bool is_last;
+        FLAC__uint32 i, x, type, length;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_IS_LAST_LEN))
+                return false; /* read_callback_ sets the state for us */
+        is_last = x? true : false;
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &type, FLAC__STREAM_METADATA_TYPE_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &length, FLAC__STREAM_METADATA_LENGTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        if(type == FLAC__METADATA_TYPE_STREAMINFO) {
+                if(!read_metadata_streaminfo_(decoder, is_last, length))
+                        return false;
+
+                decoder->private_->has_stream_info = true;
+                if(0 == memcmp(decoder->private_->stream_info.data.stream_info.md5sum, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16))
+                        decoder->private_->do_md5_checking = false;
+                if(!decoder->private_->is_seeking && decoder->private_->metadata_filter[FLAC__METADATA_TYPE_STREAMINFO] && decoder->private_->metadata_callback)
+                        decoder->private_->metadata_callback(decoder, &decoder->private_->stream_info, decoder->private_->client_data);
+        }
+        else if(type == FLAC__METADATA_TYPE_SEEKTABLE) {
+                if(!read_metadata_seektable_(decoder, is_last, length))
+                        return false;
+
+                decoder->private_->has_seek_table = true;
+                if(!decoder->private_->is_seeking && decoder->private_->metadata_filter[FLAC__METADATA_TYPE_SEEKTABLE] && decoder->private_->metadata_callback)
+                        decoder->private_->metadata_callback(decoder, &decoder->private_->seek_table, decoder->private_->client_data);
+        }
+        else {
+                FLAC__bool skip_it = !decoder->private_->metadata_filter[type];
+                unsigned real_length = length;
+                FLAC__StreamMetadata block;
+
+                block.is_last = is_last;
+                block.type = (FLAC__MetadataType)type;
+                block.length = length;
+
+                if(type == FLAC__METADATA_TYPE_APPLICATION) {
+                        if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, block.data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8))
+                                return false; /* read_callback_ sets the state for us */
+
+                        if(real_length < FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8) { /* underflow check */
+                                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;/*@@@@@@ maybe wrong error? need to resync?*/
+                                return false;
+                        }
+
+                        real_length -= FLAC__STREAM_METADATA_APPLICATION_ID_LEN/8;
+
+                        if(decoder->private_->metadata_filter_ids_count > 0 && has_id_filtered_(decoder, block.data.application.id))
+                                skip_it = !skip_it;
+                }
+
+                if(skip_it) {
+                        if(!FLAC__bitreader_skip_byte_block_aligned_no_crc(decoder->private_->input, real_length))
+                                return false; /* read_callback_ sets the state for us */
+                }
+                else {
+                        switch(type) {
+                                case FLAC__METADATA_TYPE_PADDING:
+                                        /* skip the padding bytes */
+                                        if(!FLAC__bitreader_skip_byte_block_aligned_no_crc(decoder->private_->input, real_length))
+                                                return false; /* read_callback_ sets the state for us */
+                                        break;
+                                case FLAC__METADATA_TYPE_APPLICATION:
+                                        /* remember, we read the ID already */
+                                        if(real_length > 0) {
+                                                if(0 == (block.data.application.data = (FLAC__byte*)malloc(real_length))) {
+                                                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                                                        return false;
+                                                }
+                                                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, block.data.application.data, real_length))
+                                                        return false; /* read_callback_ sets the state for us */
+                                        }
+                                        else
+                                                block.data.application.data = 0;
+                                        break;
+                                case FLAC__METADATA_TYPE_VORBIS_COMMENT:
+                                        if(!read_metadata_vorbiscomment_(decoder, &block.data.vorbis_comment))
+                                                return false;
+                                        break;
+                                case FLAC__METADATA_TYPE_CUESHEET:
+                                        if(!read_metadata_cuesheet_(decoder, &block.data.cue_sheet))
+                                                return false;
+                                        break;
+                                case FLAC__METADATA_TYPE_PICTURE:
+                                        if(!read_metadata_picture_(decoder, &block.data.picture))
+                                                return false;
+                                        break;
+                                case FLAC__METADATA_TYPE_STREAMINFO:
+                                case FLAC__METADATA_TYPE_SEEKTABLE:
+                                        FLAC__ASSERT(0);
+                                        break;
+                                default:
+                                        if(real_length > 0) {
+                                                if(0 == (block.data.unknown.data = (FLAC__byte*)malloc(real_length))) {
+                                                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                                                        return false;
+                                                }
+                                                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, block.data.unknown.data, real_length))
+                                                        return false; /* read_callback_ sets the state for us */
+                                        }
+                                        else
+                                                block.data.unknown.data = 0;
+                                        break;
+                        }
+                        if(!decoder->private_->is_seeking && decoder->private_->metadata_callback)
+                                decoder->private_->metadata_callback(decoder, &block, decoder->private_->client_data);
+
+                        /* now we have to free any malloc()ed data in the block */
+                        switch(type) {
+                                case FLAC__METADATA_TYPE_PADDING:
+                                        break;
+                                case FLAC__METADATA_TYPE_APPLICATION:
+                                        if(0 != block.data.application.data)
+                                                free(block.data.application.data);
+                                        break;
+                                case FLAC__METADATA_TYPE_VORBIS_COMMENT:
+                                        if(0 != block.data.vorbis_comment.vendor_string.entry)
+                                                free(block.data.vorbis_comment.vendor_string.entry);
+                                        if(block.data.vorbis_comment.num_comments > 0)
+                                                for(i = 0; i < block.data.vorbis_comment.num_comments; i++)
+                                                        if(0 != block.data.vorbis_comment.comments[i].entry)
+                                                                free(block.data.vorbis_comment.comments[i].entry);
+                                        if(0 != block.data.vorbis_comment.comments)
+                                                free(block.data.vorbis_comment.comments);
+                                        break;
+                                case FLAC__METADATA_TYPE_CUESHEET:
+                                        if(block.data.cue_sheet.num_tracks > 0)
+                                                for(i = 0; i < block.data.cue_sheet.num_tracks; i++)
+                                                        if(0 != block.data.cue_sheet.tracks[i].indices)
+                                                                free(block.data.cue_sheet.tracks[i].indices);
+                                        if(0 != block.data.cue_sheet.tracks)
+                                                free(block.data.cue_sheet.tracks);
+                                        break;
+                                case FLAC__METADATA_TYPE_PICTURE:
+                                        if(0 != block.data.picture.mime_type)
+                                                free(block.data.picture.mime_type);
+                                        if(0 != block.data.picture.description)
+                                                free(block.data.picture.description);
+                                        if(0 != block.data.picture.data)
+                                                free(block.data.picture.data);
+                                        break;
+                                case FLAC__METADATA_TYPE_STREAMINFO:
+                                case FLAC__METADATA_TYPE_SEEKTABLE:
+                                        FLAC__ASSERT(0);
+                                default:
+                                        if(0 != block.data.unknown.data)
+                                                free(block.data.unknown.data);
+                                        break;
+                        }
+                }
+        }
+
+        if(is_last) {
+                /* if this fails, it's OK, it's just a hint for the seek routine */
+                if(!FLAC__stream_decoder_get_decode_position(decoder, &decoder->private_->first_frame_offset))
+                        decoder->private_->first_frame_offset = 0;
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+        }
+
+        return true;
+}
+
+FLAC__bool read_metadata_streaminfo_(FLAC__StreamDecoder *decoder, FLAC__bool is_last, unsigned length)
+{
+        FLAC__uint32 x;
+        unsigned bits, used_bits = 0;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        decoder->private_->stream_info.type = FLAC__METADATA_TYPE_STREAMINFO;
+        decoder->private_->stream_info.is_last = is_last;
+        decoder->private_->stream_info.length = length;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, bits))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.min_blocksize = x;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.max_blocksize = x;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.min_framesize = x;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.max_framesize = x;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.sample_rate = x;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.channels = x+1;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN;
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        decoder->private_->stream_info.data.stream_info.bits_per_sample = x+1;
+        used_bits += bits;
+
+        bits = FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN;
+        if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &decoder->private_->stream_info.data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
+                return false; /* read_callback_ sets the state for us */
+        used_bits += bits;
+
+        if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, decoder->private_->stream_info.data.stream_info.md5sum, 16))
+                return false; /* read_callback_ sets the state for us */
+        used_bits += 16*8;
+
+        /* skip the rest of the block */
+        FLAC__ASSERT(used_bits % 8 == 0);
+        length -= (used_bits / 8);
+        if(!FLAC__bitreader_skip_byte_block_aligned_no_crc(decoder->private_->input, length))
+                return false; /* read_callback_ sets the state for us */
+
+        return true;
+}
+
+FLAC__bool read_metadata_seektable_(FLAC__StreamDecoder *decoder, FLAC__bool is_last, unsigned length)
+{
+        FLAC__uint32 i, x;
+        FLAC__uint64 xx;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        decoder->private_->seek_table.type = FLAC__METADATA_TYPE_SEEKTABLE;
+        decoder->private_->seek_table.is_last = is_last;
+        decoder->private_->seek_table.length = length;
+
+        decoder->private_->seek_table.data.seek_table.num_points = length / FLAC__STREAM_METADATA_SEEKPOINT_LENGTH;
+
+        /* use realloc since we may pass through here several times (e.g. after seeking) */
+        if(0 == (decoder->private_->seek_table.data.seek_table.points = (FLAC__StreamMetadata_SeekPoint*)safe_realloc_mul_2op_(decoder->private_->seek_table.data.seek_table.points, decoder->private_->seek_table.data.seek_table.num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint)))) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+        for(i = 0; i < decoder->private_->seek_table.data.seek_table.num_points; i++) {
+                if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &xx, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
+                        return false; /* read_callback_ sets the state for us */
+                decoder->private_->seek_table.data.seek_table.points[i].sample_number = xx;
+
+                if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &xx, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
+                        return false; /* read_callback_ sets the state for us */
+                decoder->private_->seek_table.data.seek_table.points[i].stream_offset = xx;
+
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
+                        return false; /* read_callback_ sets the state for us */
+                decoder->private_->seek_table.data.seek_table.points[i].frame_samples = x;
+        }
+        length -= (decoder->private_->seek_table.data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH);
+        /* if there is a partial point left, skip over it */
+        if(length > 0) {
+                /*@@@ do a send_error_to_client_() here?  there's an argument for either way */
+                if(!FLAC__bitreader_skip_byte_block_aligned_no_crc(decoder->private_->input, length))
+                        return false; /* read_callback_ sets the state for us */
+        }
+
+        return true;
+}
+
+FLAC__bool read_metadata_vorbiscomment_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_VorbisComment *obj)
+{
+        FLAC__uint32 i;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        /* read vendor string */
+        FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN == 32);
+        if(!FLAC__bitreader_read_uint32_little_endian(decoder->private_->input, &obj->vendor_string.length))
+                return false; /* read_callback_ sets the state for us */
+        if(obj->vendor_string.length > 0) {
+                if(0 == (obj->vendor_string.entry = (FLAC__byte*)safe_malloc_add_2op_(obj->vendor_string.length, /*+*/1))) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, obj->vendor_string.entry, obj->vendor_string.length))
+                        return false; /* read_callback_ sets the state for us */
+                obj->vendor_string.entry[obj->vendor_string.length] = '\0';
+        }
+        else
+                obj->vendor_string.entry = 0;
+
+        /* read num comments */
+        FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN == 32);
+        if(!FLAC__bitreader_read_uint32_little_endian(decoder->private_->input, &obj->num_comments))
+                return false; /* read_callback_ sets the state for us */
+
+        /* read comments */
+        if(obj->num_comments > 0) {
+                if(0 == (obj->comments = (FLAC__StreamMetadata_VorbisComment_Entry*)safe_malloc_mul_2op_(obj->num_comments, /*times*/sizeof(FLAC__StreamMetadata_VorbisComment_Entry)))) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                for(i = 0; i < obj->num_comments; i++) {
+                        FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN == 32);
+                        if(!FLAC__bitreader_read_uint32_little_endian(decoder->private_->input, &obj->comments[i].length))
+                                return false; /* read_callback_ sets the state for us */
+                        if(obj->comments[i].length > 0) {
+                                if(0 == (obj->comments[i].entry = (FLAC__byte*)safe_malloc_add_2op_(obj->comments[i].length, /*+*/1))) {
+                                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                                        return false;
+                                }
+                                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, obj->comments[i].entry, obj->comments[i].length))
+                                        return false; /* read_callback_ sets the state for us */
+                                obj->comments[i].entry[obj->comments[i].length] = '\0';
+                        }
+                        else
+                                obj->comments[i].entry = 0;
+                }
+        }
+        else {
+                obj->comments = 0;
+        }
+
+        return true;
+}
+
+FLAC__bool read_metadata_cuesheet_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_CueSheet *obj)
+{
+        FLAC__uint32 i, j, x;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        memset(obj, 0, sizeof(FLAC__StreamMetadata_CueSheet));
+
+        FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
+        if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, (FLAC__byte*)obj->media_catalog_number, FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN/8))
+                return false; /* read_callback_ sets the state for us */
+
+        if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &obj->lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
+                return false; /* read_callback_ sets the state for us */
+        obj->is_cd = x? true : false;
+
+        if(!FLAC__bitreader_skip_bits_no_crc(decoder->private_->input, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
+                return false; /* read_callback_ sets the state for us */
+        obj->num_tracks = x;
+
+        if(obj->num_tracks > 0) {
+                if(0 == (obj->tracks = (FLAC__StreamMetadata_CueSheet_Track*)safe_calloc_(obj->num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track)))) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                        return false;
+                }
+                for(i = 0; i < obj->num_tracks; i++) {
+                        FLAC__StreamMetadata_CueSheet_Track *track = &obj->tracks[i];
+                        if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
+                                return false; /* read_callback_ sets the state for us */
+
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        track->number = (FLAC__byte)x;
+
+                        FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
+                        if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, (FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
+                                return false; /* read_callback_ sets the state for us */
+
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        track->type = x;
+
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        track->pre_emphasis = x;
+
+                        if(!FLAC__bitreader_skip_bits_no_crc(decoder->private_->input, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
+                                return false; /* read_callback_ sets the state for us */
+
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        track->num_indices = (FLAC__byte)x;
+
+                        if(track->num_indices > 0) {
+                                if(0 == (track->indices = (FLAC__StreamMetadata_CueSheet_Index*)safe_calloc_(track->num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index)))) {
+                                        decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                                        return false;
+                                }
+                                for(j = 0; j < track->num_indices; j++) {
+                                        FLAC__StreamMetadata_CueSheet_Index *index = &track->indices[j];
+                                        if(!FLAC__bitreader_read_raw_uint64(decoder->private_->input, &index->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
+                                                return false; /* read_callback_ sets the state for us */
+
+                                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
+                                                return false; /* read_callback_ sets the state for us */
+                                        index->number = (FLAC__byte)x;
+
+                                        if(!FLAC__bitreader_skip_bits_no_crc(decoder->private_->input, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
+                                                return false; /* read_callback_ sets the state for us */
+                                }
+                        }
+                }
+        }
+
+        return true;
+}
+
+FLAC__bool read_metadata_picture_(FLAC__StreamDecoder *decoder, FLAC__StreamMetadata_Picture *obj)
+{
+        FLAC__uint32 x;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        /* read type */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        obj->type = x;
+
+        /* read MIME type */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+        if(0 == (obj->mime_type = (char*)safe_malloc_add_2op_(x, /*+*/1))) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+        if(x > 0) {
+                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, (FLAC__byte*)obj->mime_type, x))
+                        return false; /* read_callback_ sets the state for us */
+        }
+        obj->mime_type[x] = '\0';
+
+        /* read description */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+        if(0 == (obj->description = (FLAC__byte*)safe_malloc_add_2op_(x, /*+*/1))) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+        if(x > 0) {
+                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, obj->description, x))
+                        return false; /* read_callback_ sets the state for us */
+        }
+        obj->description[x] = '\0';
+
+        /* read width */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &obj->width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        /* read height */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &obj->height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        /* read depth */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &obj->depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        /* read colors */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &obj->colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN))
+                return false; /* read_callback_ sets the state for us */
+
+        /* read data */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &(obj->data_length), FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN))
+                return false; /* read_callback_ sets the state for us */
+        if(0 == (obj->data = (FLAC__byte*)safe_malloc_(obj->data_length))) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+        if(obj->data_length > 0) {
+                if(!FLAC__bitreader_read_byte_block_aligned_no_crc(decoder->private_->input, obj->data, obj->data_length))
+                        return false; /* read_callback_ sets the state for us */
+        }
+
+        return true;
+}
+
+FLAC__bool skip_id3v2_tag_(FLAC__StreamDecoder *decoder)
+{
+        FLAC__uint32 x;
+        unsigned i, skip;
+
+        /* skip the version and flags bytes */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 24))
+                return false; /* read_callback_ sets the state for us */
+        /* get the size (in bytes) to skip */
+        skip = 0;
+        for(i = 0; i < 4; i++) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                        return false; /* read_callback_ sets the state for us */
+                skip <<= 7;
+                skip |= (x & 0x7f);
+        }
+        /* skip the rest of the tag */
+        if(!FLAC__bitreader_skip_byte_block_aligned_no_crc(decoder->private_->input, skip))
+                return false; /* read_callback_ sets the state for us */
+        return true;
+}
+
+FLAC__bool frame_sync_(FLAC__StreamDecoder *decoder)
+{
+        FLAC__uint32 x;
+        FLAC__bool first = true;
+
+        /* If we know the total number of samples in the stream, stop if we've read that many. */
+        /* This will stop us, for example, from wasting time trying to sync on an ID3V1 tag. */
+        if(FLAC__stream_decoder_get_total_samples(decoder) > 0) {
+                if(decoder->private_->samples_decoded >= FLAC__stream_decoder_get_total_samples(decoder)) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_END_OF_STREAM;
+                        return true;
+                }
+        }
+
+        /* make sure we're byte aligned */
+        if(!FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input)) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__bitreader_bits_left_for_byte_alignment(decoder->private_->input)))
+                        return false; /* read_callback_ sets the state for us */
+        }
+
+        while(1) {
+                if(decoder->private_->cached) {
+                        x = (FLAC__uint32)decoder->private_->lookahead;
+                        decoder->private_->cached = false;
+                }
+                else {
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                                return false; /* read_callback_ sets the state for us */
+                }
+                if(x == 0xff) { /* MAGIC NUMBER for the first 8 frame sync bits */
+                        decoder->private_->header_warmup[0] = (FLAC__byte)x;
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                                return false; /* read_callback_ sets the state for us */
+
+                        /* we have to check if we just read two 0xff's in a row; the second may actually be the beginning of the sync code */
+                        /* else we have to check if the second byte is the end of a sync code */
+                        if(x == 0xff) { /* MAGIC NUMBER for the first 8 frame sync bits */
+                                decoder->private_->lookahead = (FLAC__byte)x;
+                                decoder->private_->cached = true;
+                        }
+                        else if(x >> 2 == 0x3e) { /* MAGIC NUMBER for the last 6 sync bits */
+                                decoder->private_->header_warmup[1] = (FLAC__byte)x;
+                                decoder->protected_->state = FLAC__STREAM_DECODER_READ_FRAME;
+                                return true;
+                        }
+                }
+                if(first) {
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                        first = false;
+                }
+        }
+
+        return true;
+}
+
+FLAC__bool read_frame_(FLAC__StreamDecoder *decoder, FLAC__bool *got_a_frame, FLAC__bool do_full_decode)
+{
+        unsigned channel;
+        unsigned i;
+        FLAC__int32 mid, side;
+        unsigned frame_crc; /* the one we calculate from the input stream */
+        FLAC__uint32 x;
+
+        *got_a_frame = false;
+
+        /* init the CRC */
+        frame_crc = 0;
+        frame_crc = FLAC__CRC16_UPDATE(decoder->private_->header_warmup[0], frame_crc);
+        frame_crc = FLAC__CRC16_UPDATE(decoder->private_->header_warmup[1], frame_crc);
+        FLAC__bitreader_reset_read_crc16(decoder->private_->input, (FLAC__uint16)frame_crc);
+
+        if(!read_frame_header_(decoder))
+                return false;
+        if(decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC) /* means we didn't sync on a valid header */
+                return true;
+        if(!allocate_output_(decoder, decoder->private_->frame.header.blocksize, decoder->private_->frame.header.channels))
+                return false;
+        for(channel = 0; channel < decoder->private_->frame.header.channels; channel++) {
+                /*
+                 * first figure the correct bits-per-sample of the subframe
+                 */
+                unsigned bps = decoder->private_->frame.header.bits_per_sample;
+                switch(decoder->private_->frame.header.channel_assignment) {
+                        case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
+                                /* no adjustment needed */
+                                break;
+                        case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
+                                FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                if(channel == 1)
+                                        bps++;
+                                break;
+                        case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
+                                FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                if(channel == 0)
+                                        bps++;
+                                break;
+                        case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
+                                FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                if(channel == 1)
+                                        bps++;
+                                break;
+                        default:
+                                FLAC__ASSERT(0);
+                }
+                /*
+                 * now read it
+                 */
+                if(!read_subframe_(decoder, channel, bps, do_full_decode))
+                        return false;
+                if(decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC) /* means bad sync or got corruption */
+                        return true;
+        }
+        if(!read_zero_padding_(decoder))
+                return false;
+        if(decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC) /* means bad sync or got corruption (i.e. "zero bits" were not all zeroes) */
+                return true;
+
+        /*
+         * Read the frame CRC-16 from the footer and check
+         */
+        frame_crc = FLAC__bitreader_get_read_crc16(decoder->private_->input);
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, FLAC__FRAME_FOOTER_CRC_LEN))
+                return false; /* read_callback_ sets the state for us */
+        if(frame_crc == x) {
+                if(do_full_decode) {
+                        /* Undo any special channel coding */
+                        switch(decoder->private_->frame.header.channel_assignment) {
+                                case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
+                                        /* do nothing */
+                                        break;
+                                case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
+                                        FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                        for(i = 0; i < decoder->private_->frame.header.blocksize; i++)
+                                                decoder->private_->output[1][i] = decoder->private_->output[0][i] - decoder->private_->output[1][i];
+                                        break;
+                                case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
+                                        FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                        for(i = 0; i < decoder->private_->frame.header.blocksize; i++)
+                                                decoder->private_->output[0][i] += decoder->private_->output[1][i];
+                                        break;
+                                case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
+                                        FLAC__ASSERT(decoder->private_->frame.header.channels == 2);
+                                        for(i = 0; i < decoder->private_->frame.header.blocksize; i++) {
+#if 1
+                                                mid = decoder->private_->output[0][i];
+                                                side = decoder->private_->output[1][i];
+                                                mid <<= 1;
+                                                mid |= (side & 1); /* i.e. if 'side' is odd... */
+                                                decoder->private_->output[0][i] = (mid + side) >> 1;
+                                                decoder->private_->output[1][i] = (mid - side) >> 1;
+#else
+                                                /* OPT: without 'side' temp variable */
+                                                mid = (decoder->private_->output[0][i] << 1) | (decoder->private_->output[1][i] & 1); /* i.e. if 'side' is odd... */
+                                                decoder->private_->output[0][i] = (mid + decoder->private_->output[1][i]) >> 1;
+                                                decoder->private_->output[1][i] = (mid - decoder->private_->output[1][i]) >> 1;
+#endif
+                                        }
+                                        break;
+                                default:
+                                        FLAC__ASSERT(0);
+                                        break;
+                        }
+                }
+        }
+        else {
+                /* Bad frame, emit error and zero the output signal */
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH);
+                if(do_full_decode) {
+                        for(channel = 0; channel < decoder->private_->frame.header.channels; channel++) {
+                                memset(decoder->private_->output[channel], 0, sizeof(FLAC__int32) * decoder->private_->frame.header.blocksize);
+                        }
+                }
+        }
+
+        *got_a_frame = true;
+
+        /* we wait to update fixed_block_size until here, when we're sure we've got a proper frame and hence a correct blocksize */
+        if(decoder->private_->next_fixed_block_size)
+                decoder->private_->fixed_block_size = decoder->private_->next_fixed_block_size;
+
+        /* put the latest values into the public section of the decoder instance */
+        decoder->protected_->channels = decoder->private_->frame.header.channels;
+        decoder->protected_->channel_assignment = decoder->private_->frame.header.channel_assignment;
+        decoder->protected_->bits_per_sample = decoder->private_->frame.header.bits_per_sample;
+        decoder->protected_->sample_rate = decoder->private_->frame.header.sample_rate;
+        decoder->protected_->blocksize = decoder->private_->frame.header.blocksize;
+
+        FLAC__ASSERT(decoder->private_->frame.header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
+        decoder->private_->samples_decoded = decoder->private_->frame.header.number.sample_number + decoder->private_->frame.header.blocksize;
+
+        /* write it */
+        if(do_full_decode) {
+                if(write_audio_frame_to_client_(decoder, &decoder->private_->frame, (const FLAC__int32 * const *)decoder->private_->output) != FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE)
+                        return false;
+        }
+
+        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+        return true;
+}
+
+FLAC__bool read_frame_header_(FLAC__StreamDecoder *decoder)
+{
+        FLAC__uint32 x;
+        FLAC__uint64 xx;
+        unsigned i, blocksize_hint = 0, sample_rate_hint = 0;
+        FLAC__byte crc8, raw_header[16]; /* MAGIC NUMBER based on the maximum frame header size, including CRC */
+        unsigned raw_header_len;
+        FLAC__bool is_unparseable = false;
+
+        FLAC__ASSERT(FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input));
+
+        /* init the raw header with the saved bits from synchronization */
+        raw_header[0] = decoder->private_->header_warmup[0];
+        raw_header[1] = decoder->private_->header_warmup[1];
+        raw_header_len = 2;
+
+        /* check to make sure that reserved bit is 0 */
+        if(raw_header[1] & 0x02) /* MAGIC NUMBER */
+                is_unparseable = true;
+
+        /*
+         * Note that along the way as we read the header, we look for a sync
+         * code inside.  If we find one it would indicate that our original
+         * sync was bad since there cannot be a sync code in a valid header.
+         *
+         * Three kinds of things can go wrong when reading the frame header:
+         *  1) We may have sync'ed incorrectly and not landed on a frame header.
+         *     If we don't find a sync code, it can end up looking like we read
+         *     a valid but unparseable header, until getting to the frame header
+         *     CRC.  Even then we could get a false positive on the CRC.
+         *  2) We may have sync'ed correctly but on an unparseable frame (from a
+         *     future encoder).
+         *  3) We may be on a damaged frame which appears valid but unparseable.
+         *
+         * For all these reasons, we try and read a complete frame header as
+         * long as it seems valid, even if unparseable, up until the frame
+         * header CRC.
+         */
+
+        /*
+         * read in the raw header as bytes so we can CRC it, and parse it on the way
+         */
+        for(i = 0; i < 2; i++) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                        return false; /* read_callback_ sets the state for us */
+                if(x == 0xff) { /* MAGIC NUMBER for the first 8 frame sync bits */
+                        /* if we get here it means our original sync was erroneous since the sync code cannot appear in the header */
+                        decoder->private_->lookahead = (FLAC__byte)x;
+                        decoder->private_->cached = true;
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                }
+                raw_header[raw_header_len++] = (FLAC__byte)x;
+        }
+
+        switch(x = raw_header[2] >> 4) {
+                case 0:
+                        is_unparseable = true;
+                        break;
+                case 1:
+                        decoder->private_->frame.header.blocksize = 192;
+                        break;
+                case 2:
+                case 3:
+                case 4:
+                case 5:
+                        decoder->private_->frame.header.blocksize = 576 << (x-2);
+                        break;
+                case 6:
+                case 7:
+                        blocksize_hint = x;
+                        break;
+                case 8:
+                case 9:
+                case 10:
+                case 11:
+                case 12:
+                case 13:
+                case 14:
+                case 15:
+                        decoder->private_->frame.header.blocksize = 256 << (x-8);
+                        break;
+                default:
+                        FLAC__ASSERT(0);
+                        break;
+        }
+
+        switch(x = raw_header[2] & 0x0f) {
+                case 0:
+                        if(decoder->private_->has_stream_info)
+                                decoder->private_->frame.header.sample_rate = decoder->private_->stream_info.data.stream_info.sample_rate;
+                        else
+                                is_unparseable = true;
+                        break;
+                case 1:
+                        decoder->private_->frame.header.sample_rate = 88200;
+                        break;
+                case 2:
+                        decoder->private_->frame.header.sample_rate = 176400;
+                        break;
+                case 3:
+                        decoder->private_->frame.header.sample_rate = 192000;
+                        break;
+                case 4:
+                        decoder->private_->frame.header.sample_rate = 8000;
+                        break;
+                case 5:
+                        decoder->private_->frame.header.sample_rate = 16000;
+                        break;
+                case 6:
+                        decoder->private_->frame.header.sample_rate = 22050;
+                        break;
+                case 7:
+                        decoder->private_->frame.header.sample_rate = 24000;
+                        break;
+                case 8:
+                        decoder->private_->frame.header.sample_rate = 32000;
+                        break;
+                case 9:
+                        decoder->private_->frame.header.sample_rate = 44100;
+                        break;
+                case 10:
+                        decoder->private_->frame.header.sample_rate = 48000;
+                        break;
+                case 11:
+                        decoder->private_->frame.header.sample_rate = 96000;
+                        break;
+                case 12:
+                case 13:
+                case 14:
+                        sample_rate_hint = x;
+                        break;
+                case 15:
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                default:
+                        FLAC__ASSERT(0);
+        }
+
+        x = (unsigned)(raw_header[3] >> 4);
+        if(x & 8) {
+                decoder->private_->frame.header.channels = 2;
+                switch(x & 7) {
+                        case 0:
+                                decoder->private_->frame.header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE;
+                                break;
+                        case 1:
+                                decoder->private_->frame.header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE;
+                                break;
+                        case 2:
+                                decoder->private_->frame.header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_MID_SIDE;
+                                break;
+                        default:
+                                is_unparseable = true;
+                                break;
+                }
+        }
+        else {
+                decoder->private_->frame.header.channels = (unsigned)x + 1;
+                decoder->private_->frame.header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
+        }
+
+        switch(x = (unsigned)(raw_header[3] & 0x0e) >> 1) {
+                case 0:
+                        if(decoder->private_->has_stream_info)
+                                decoder->private_->frame.header.bits_per_sample = decoder->private_->stream_info.data.stream_info.bits_per_sample;
+                        else
+                                is_unparseable = true;
+                        break;
+                case 1:
+                        decoder->private_->frame.header.bits_per_sample = 8;
+                        break;
+                case 2:
+                        decoder->private_->frame.header.bits_per_sample = 12;
+                        break;
+                case 4:
+                        decoder->private_->frame.header.bits_per_sample = 16;
+                        break;
+                case 5:
+                        decoder->private_->frame.header.bits_per_sample = 20;
+                        break;
+                case 6:
+                        decoder->private_->frame.header.bits_per_sample = 24;
+                        break;
+                case 3:
+                case 7:
+                        is_unparseable = true;
+                        break;
+                default:
+                        FLAC__ASSERT(0);
+                        break;
+        }
+
+        /* check to make sure that reserved bit is 0 */
+        if(raw_header[3] & 0x01) /* MAGIC NUMBER */
+                is_unparseable = true;
+
+        /* read the frame's starting sample number (or frame number as the case may be) */
+        if(
+                raw_header[1] & 0x01 ||
+                /*@@@ this clause is a concession to the old way of doing variable blocksize; the only known implementation is flake and can probably be removed without inconveniencing anyone */
+                (decoder->private_->has_stream_info && decoder->private_->stream_info.data.stream_info.min_blocksize != decoder->private_->stream_info.data.stream_info.max_blocksize)
+        ) { /* variable blocksize */
+                if(!FLAC__bitreader_read_utf8_uint64(decoder->private_->input, &xx, raw_header, &raw_header_len))
+                        return false; /* read_callback_ sets the state for us */
+                if(xx == FLAC__U64L(0xffffffffffffffff)) { /* i.e. non-UTF8 code... */
+                        decoder->private_->lookahead = raw_header[raw_header_len-1]; /* back up as much as we can */
+                        decoder->private_->cached = true;
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                }
+                decoder->private_->frame.header.number_type = FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER;
+                decoder->private_->frame.header.number.sample_number = xx;
+        }
+        else { /* fixed blocksize */
+                if(!FLAC__bitreader_read_utf8_uint32(decoder->private_->input, &x, raw_header, &raw_header_len))
+                        return false; /* read_callback_ sets the state for us */
+                if(x == 0xffffffff) { /* i.e. non-UTF8 code... */
+                        decoder->private_->lookahead = raw_header[raw_header_len-1]; /* back up as much as we can */
+                        decoder->private_->cached = true;
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                }
+                decoder->private_->frame.header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
+                decoder->private_->frame.header.number.frame_number = x;
+        }
+
+        if(blocksize_hint) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                        return false; /* read_callback_ sets the state for us */
+                raw_header[raw_header_len++] = (FLAC__byte)x;
+                if(blocksize_hint == 7) {
+                        FLAC__uint32 _x;
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &_x, 8))
+                                return false; /* read_callback_ sets the state for us */
+                        raw_header[raw_header_len++] = (FLAC__byte)_x;
+                        x = (x << 8) | _x;
+                }
+                decoder->private_->frame.header.blocksize = x+1;
+        }
+
+        if(sample_rate_hint) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                        return false; /* read_callback_ sets the state for us */
+                raw_header[raw_header_len++] = (FLAC__byte)x;
+                if(sample_rate_hint != 12) {
+                        FLAC__uint32 _x;
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &_x, 8))
+                                return false; /* read_callback_ sets the state for us */
+                        raw_header[raw_header_len++] = (FLAC__byte)_x;
+                        x = (x << 8) | _x;
+                }
+                if(sample_rate_hint == 12)
+                        decoder->private_->frame.header.sample_rate = x*1000;
+                else if(sample_rate_hint == 13)
+                        decoder->private_->frame.header.sample_rate = x;
+                else
+                        decoder->private_->frame.header.sample_rate = x*10;
+        }
+
+        /* read the CRC-8 byte */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8))
+                return false; /* read_callback_ sets the state for us */
+        crc8 = (FLAC__byte)x;
+
+        if(FLAC__crc8(raw_header, raw_header_len) != crc8) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+
+        /* calculate the sample number from the frame number if needed */
+        decoder->private_->next_fixed_block_size = 0;
+        if(decoder->private_->frame.header.number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER) {
+                x = decoder->private_->frame.header.number.frame_number;
+                decoder->private_->frame.header.number_type = FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER;
+                if(decoder->private_->fixed_block_size)
+                        decoder->private_->frame.header.number.sample_number = (FLAC__uint64)decoder->private_->fixed_block_size * (FLAC__uint64)x;
+                else if(decoder->private_->has_stream_info) {
+                        if(decoder->private_->stream_info.data.stream_info.min_blocksize == decoder->private_->stream_info.data.stream_info.max_blocksize) {
+                                decoder->private_->frame.header.number.sample_number = (FLAC__uint64)decoder->private_->stream_info.data.stream_info.min_blocksize * (FLAC__uint64)x;
+                                decoder->private_->next_fixed_block_size = decoder->private_->stream_info.data.stream_info.max_blocksize;
+                        }
+                        else
+                                is_unparseable = true;
+                }
+                else if(x == 0) {
+                        decoder->private_->frame.header.number.sample_number = 0;
+                        decoder->private_->next_fixed_block_size = decoder->private_->frame.header.blocksize;
+                }
+                else {
+                        /* can only get here if the stream has invalid frame numbering and no STREAMINFO, so assume it's not the last (possibly short) frame */
+                        decoder->private_->frame.header.number.sample_number = (FLAC__uint64)decoder->private_->frame.header.blocksize * (FLAC__uint64)x;
+                }
+        }
+
+        if(is_unparseable) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+
+        return true;
+}
+
+FLAC__bool read_subframe_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode)
+{
+        FLAC__uint32 x;
+        FLAC__bool wasted_bits;
+        unsigned i;
+
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &x, 8)) /* MAGIC NUMBER */
+                return false; /* read_callback_ sets the state for us */
+
+        wasted_bits = (x & 1);
+        x &= 0xfe;
+
+        if(wasted_bits) {
+                unsigned u;
+                if(!FLAC__bitreader_read_unary_unsigned(decoder->private_->input, &u))
+                        return false; /* read_callback_ sets the state for us */
+                decoder->private_->frame.subframes[channel].wasted_bits = u+1;
+                bps -= decoder->private_->frame.subframes[channel].wasted_bits;
+        }
+        else
+                decoder->private_->frame.subframes[channel].wasted_bits = 0;
+
+        /*
+         * Lots of magic numbers here
+         */
+        if(x & 0x80) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+        else if(x == 0) {
+                if(!read_subframe_constant_(decoder, channel, bps, do_full_decode))
+                        return false;
+        }
+        else if(x == 2) {
+                if(!read_subframe_verbatim_(decoder, channel, bps, do_full_decode))
+                        return false;
+        }
+        else if(x < 16) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+        else if(x <= 24) {
+                if(!read_subframe_fixed_(decoder, channel, bps, (x>>1)&7, do_full_decode))
+                        return false;
+                if(decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC) /* means bad sync or got corruption */
+                        return true;
+        }
+        else if(x < 64) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+        else {
+                if(!read_subframe_lpc_(decoder, channel, bps, ((x>>1)&31)+1, do_full_decode))
+                        return false;
+                if(decoder->protected_->state == FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC) /* means bad sync or got corruption */
+                        return true;
+        }
+
+        if(wasted_bits && do_full_decode) {
+                x = decoder->private_->frame.subframes[channel].wasted_bits;
+                for(i = 0; i < decoder->private_->frame.header.blocksize; i++)
+                        decoder->private_->output[channel][i] <<= x;
+        }
+
+        return true;
+}
+
+FLAC__bool read_subframe_constant_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode)
+{
+        FLAC__Subframe_Constant *subframe = &decoder->private_->frame.subframes[channel].data.constant;
+        FLAC__int32 x;
+        unsigned i;
+        FLAC__int32 *output = decoder->private_->output[channel];
+
+        decoder->private_->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_CONSTANT;
+
+        if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &x, bps))
+                return false; /* read_callback_ sets the state for us */
+
+        subframe->value = x;
+
+        /* decode the subframe */
+        if(do_full_decode) {
+                for(i = 0; i < decoder->private_->frame.header.blocksize; i++)
+                        output[i] = x;
+        }
+
+        return true;
+}
+
+FLAC__bool read_subframe_fixed_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order, FLAC__bool do_full_decode)
+{
+        FLAC__Subframe_Fixed *subframe = &decoder->private_->frame.subframes[channel].data.fixed;
+        FLAC__int32 i32;
+        FLAC__uint32 u32;
+        unsigned u;
+
+        decoder->private_->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_FIXED;
+
+        subframe->residual = decoder->private_->residual[channel];
+        subframe->order = order;
+
+        /* read warm-up samples */
+        for(u = 0; u < order; u++) {
+                if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i32, bps))
+                        return false; /* read_callback_ sets the state for us */
+                subframe->warmup[u] = i32;
+        }
+
+        /* read entropy coding method info */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &u32, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        subframe->entropy_coding_method.type = (FLAC__EntropyCodingMethodType)u32;
+        switch(subframe->entropy_coding_method.type) {
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &u32, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        subframe->entropy_coding_method.data.partitioned_rice.order = u32;
+                        subframe->entropy_coding_method.data.partitioned_rice.contents = &decoder->private_->partitioned_rice_contents[channel];
+                        break;
+                default:
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+        }
+
+        /* read residual */
+        switch(subframe->entropy_coding_method.type) {
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
+                        if(!read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, &decoder->private_->partitioned_rice_contents[channel], decoder->private_->residual[channel], /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2))
+                                return false;
+                        break;
+                default:
+                        FLAC__ASSERT(0);
+        }
+
+        /* decode the subframe */
+        if(do_full_decode) {
+                memcpy(decoder->private_->output[channel], subframe->warmup, sizeof(FLAC__int32) * order);
+                FLAC__fixed_restore_signal(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, order, decoder->private_->output[channel]+order);
+        }
+
+        return true;
+}
+
+FLAC__bool read_subframe_lpc_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, const unsigned order, FLAC__bool do_full_decode)
+{
+        FLAC__Subframe_LPC *subframe = &decoder->private_->frame.subframes[channel].data.lpc;
+        FLAC__int32 i32;
+        FLAC__uint32 u32;
+        unsigned u;
+
+        decoder->private_->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_LPC;
+
+        subframe->residual = decoder->private_->residual[channel];
+        subframe->order = order;
+
+        /* read warm-up samples */
+        for(u = 0; u < order; u++) {
+                if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i32, bps))
+                        return false; /* read_callback_ sets the state for us */
+                subframe->warmup[u] = i32;
+        }
+
+        /* read qlp coeff precision */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &u32, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
+                return false; /* read_callback_ sets the state for us */
+        if(u32 == (1u << FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN) - 1) {
+                send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                return true;
+        }
+        subframe->qlp_coeff_precision = u32+1;
+
+        /* read qlp shift */
+        if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i32, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
+                return false; /* read_callback_ sets the state for us */
+        subframe->quantization_level = i32;
+
+        /* read quantized lp coefficiencts */
+        for(u = 0; u < order; u++) {
+                if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i32, subframe->qlp_coeff_precision))
+                        return false; /* read_callback_ sets the state for us */
+                subframe->qlp_coeff[u] = i32;
+        }
+
+        /* read entropy coding method info */
+        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &u32, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
+                return false; /* read_callback_ sets the state for us */
+        subframe->entropy_coding_method.type = (FLAC__EntropyCodingMethodType)u32;
+        switch(subframe->entropy_coding_method.type) {
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &u32, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        subframe->entropy_coding_method.data.partitioned_rice.order = u32;
+                        subframe->entropy_coding_method.data.partitioned_rice.contents = &decoder->private_->partitioned_rice_contents[channel];
+                        break;
+                default:
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+        }
+
+        /* read residual */
+        switch(subframe->entropy_coding_method.type) {
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
+                case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
+                        if(!read_residual_partitioned_rice_(decoder, order, subframe->entropy_coding_method.data.partitioned_rice.order, &decoder->private_->partitioned_rice_contents[channel], decoder->private_->residual[channel], /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2))
+                                return false;
+                        break;
+                default:
+                        FLAC__ASSERT(0);
+        }
+
+        /* decode the subframe */
+        if(do_full_decode) {
+                memcpy(decoder->private_->output[channel], subframe->warmup, sizeof(FLAC__int32) * order);
+                /*@@@@@@ technically not pessimistic enough, should be more like
+                if( (FLAC__uint64)order * ((((FLAC__uint64)1)<<bps)-1) * ((1<<subframe->qlp_coeff_precision)-1) < (((FLAC__uint64)-1) << 32) )
+                */
+                if(bps + subframe->qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
+                        if(bps <= 16 && subframe->qlp_coeff_precision <= 16) {
+                                if(order <= 8)
+                                        decoder->private_->local_lpc_restore_signal_16bit_order8(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, subframe->qlp_coeff, order, subframe->quantization_level, decoder->private_->output[channel]+order);
+                                else
+                                        decoder->private_->local_lpc_restore_signal_16bit(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, subframe->qlp_coeff, order, subframe->quantization_level, decoder->private_->output[channel]+order);
+                        }
+                        else
+                                decoder->private_->local_lpc_restore_signal(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, subframe->qlp_coeff, order, subframe->quantization_level, decoder->private_->output[channel]+order);
+                else
+                        decoder->private_->local_lpc_restore_signal_64bit(decoder->private_->residual[channel], decoder->private_->frame.header.blocksize-order, subframe->qlp_coeff, order, subframe->quantization_level, decoder->private_->output[channel]+order);
+        }
+
+        return true;
+}
+
+FLAC__bool read_subframe_verbatim_(FLAC__StreamDecoder *decoder, unsigned channel, unsigned bps, FLAC__bool do_full_decode)
+{
+        FLAC__Subframe_Verbatim *subframe = &decoder->private_->frame.subframes[channel].data.verbatim;
+        FLAC__int32 x, *residual = decoder->private_->residual[channel];
+        unsigned i;
+
+        decoder->private_->frame.subframes[channel].type = FLAC__SUBFRAME_TYPE_VERBATIM;
+
+        subframe->data = residual;
+
+        for(i = 0; i < decoder->private_->frame.header.blocksize; i++) {
+                if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &x, bps))
+                        return false; /* read_callback_ sets the state for us */
+                residual[i] = x;
+        }
+
+        /* decode the subframe */
+        if(do_full_decode)
+                memcpy(decoder->private_->output[channel], subframe->data, sizeof(FLAC__int32) * decoder->private_->frame.header.blocksize);
+
+        return true;
+}
+
+FLAC__bool read_residual_partitioned_rice_(FLAC__StreamDecoder *decoder, unsigned predictor_order, unsigned partition_order, FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, FLAC__int32 *residual, FLAC__bool is_extended)
+{
+        FLAC__uint32 rice_parameter;
+        int i;
+        unsigned partition, sample, u;
+        const unsigned partitions = 1u << partition_order;
+        const unsigned partition_samples = partition_order > 0? decoder->private_->frame.header.blocksize >> partition_order : decoder->private_->frame.header.blocksize - predictor_order;
+        const unsigned plen = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
+        const unsigned pesc = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
+
+        /* sanity checks */
+        if(partition_order == 0) {
+                if(decoder->private_->frame.header.blocksize < predictor_order) {
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                }
+        }
+        else {
+                if(partition_samples < predictor_order) {
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                        return true;
+                }
+        }
+
+        if(!FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order))) {
+                decoder->protected_->state = FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR;
+                return false;
+        }
+
+        sample = 0;
+        for(partition = 0; partition < partitions; partition++) {
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &rice_parameter, plen))
+                        return false; /* read_callback_ sets the state for us */
+                partitioned_rice_contents->parameters[partition] = rice_parameter;
+                if(rice_parameter < pesc) {
+                        partitioned_rice_contents->raw_bits[partition] = 0;
+                        u = (partition_order == 0 || partition > 0)? partition_samples : partition_samples - predictor_order;
+                        if(!decoder->private_->local_bitreader_read_rice_signed_block(decoder->private_->input, residual + sample, u, rice_parameter))
+                                return false; /* read_callback_ sets the state for us */
+                        sample += u;
+                }
+                else {
+                        if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
+                                return false; /* read_callback_ sets the state for us */
+                        partitioned_rice_contents->raw_bits[partition] = rice_parameter;
+                        for(u = (partition_order == 0 || partition > 0)? 0 : predictor_order; u < partition_samples; u++, sample++) {
+                                if(!FLAC__bitreader_read_raw_int32(decoder->private_->input, &i, rice_parameter))
+                                        return false; /* read_callback_ sets the state for us */
+                                residual[sample] = i;
+                        }
+                }
+        }
+
+        return true;
+}
+
+FLAC__bool read_zero_padding_(FLAC__StreamDecoder *decoder)
+{
+        if(!FLAC__bitreader_is_consumed_byte_aligned(decoder->private_->input)) {
+                FLAC__uint32 zero = 0;
+                if(!FLAC__bitreader_read_raw_uint32(decoder->private_->input, &zero, FLAC__bitreader_bits_left_for_byte_alignment(decoder->private_->input)))
+                        return false; /* read_callback_ sets the state for us */
+                if(zero != 0) {
+                        send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
+                }
+        }
+        return true;
+}
+
+FLAC__bool read_callback_(FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+        FLAC__StreamDecoder *decoder = (FLAC__StreamDecoder *)client_data;
+
+        if(
+#if FLAC__HAS_OGG
+                /* see [1] HACK NOTE below for why we don't call the eof_callback when decoding Ogg FLAC */
+                !decoder->private_->is_ogg &&
+#endif
+                decoder->private_->eof_callback && decoder->private_->eof_callback(decoder, decoder->private_->client_data)
+        ) {
+                *bytes = 0;
+                decoder->protected_->state = FLAC__STREAM_DECODER_END_OF_STREAM;
+                return false;
+        }
+        else if(*bytes > 0) {
+                /* While seeking, it is possible for our seek to land in the
+                 * middle of audio data that looks exactly like a frame header
+                 * from a future version of an encoder.  When that happens, our
+                 * error callback will get an
+                 * FLAC__STREAM_DECODER_UNPARSEABLE_STREAM and increment its
+                 * unparseable_frame_count.  But there is a remote possibility
+                 * that it is properly synced at such a "future-codec frame",
+                 * so to make sure, we wait to see many "unparseable" errors in
+                 * a row before bailing out.
+                 */
+                if(decoder->private_->is_seeking && decoder->private_->unparseable_frame_count > 20) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_ABORTED;
+                        return false;
+                }
+                else {
+                        const FLAC__StreamDecoderReadStatus status =
+#if FLAC__HAS_OGG
+                                decoder->private_->is_ogg?
+                                read_callback_ogg_aspect_(decoder, buffer, bytes) :
+#endif
+                                decoder->private_->read_callback(decoder, buffer, bytes, decoder->private_->client_data)
+                        ;
+                        if(status == FLAC__STREAM_DECODER_READ_STATUS_ABORT) {
+                                decoder->protected_->state = FLAC__STREAM_DECODER_ABORTED;
+                                return false;
+                        }
+                        else if(*bytes == 0) {
+                                if(
+                                        status == FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM ||
+                                        (
+#if FLAC__HAS_OGG
+                                                /* see [1] HACK NOTE below for why we don't call the eof_callback when decoding Ogg FLAC */
+                                                !decoder->private_->is_ogg &&
+#endif
+                                                decoder->private_->eof_callback && decoder->private_->eof_callback(decoder, decoder->private_->client_data)
+                                        )
+                                ) {
+                                        decoder->protected_->state = FLAC__STREAM_DECODER_END_OF_STREAM;
+                                        return false;
+                                }
+                                else
+                                        return true;
+                        }
+                        else
+                                return true;
+                }
+        }
+        else {
+                /* abort to avoid a deadlock */
+                decoder->protected_->state = FLAC__STREAM_DECODER_ABORTED;
+                return false;
+        }
+        /* [1] @@@ HACK NOTE: The end-of-stream checking has to be hacked around
+         * for Ogg FLAC.  This is because the ogg decoder aspect can lose sync
+         * and at the same time hit the end of the stream (for example, seeking
+         * to a point that is after the beginning of the last Ogg page).  There
+         * is no way to report an Ogg sync loss through the callbacks (see note
+         * in read_callback_ogg_aspect_()) so it returns CONTINUE with *bytes==0.
+         * So to keep the decoder from stopping at this point we gate the call
+         * to the eof_callback and let the Ogg decoder aspect set the
+         * end-of-stream state when it is needed.
+         */
+}
+
+#if FLAC__HAS_OGG
+FLAC__StreamDecoderReadStatus read_callback_ogg_aspect_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes)
+{
+        switch(FLAC__ogg_decoder_aspect_read_callback_wrapper(&decoder->protected_->ogg_decoder_aspect, buffer, bytes, read_callback_proxy_, decoder, decoder->private_->client_data)) {
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_OK:
+                        return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+                /* we don't really have a way to handle lost sync via read
+                 * callback so we'll let it pass and let the underlying
+                 * FLAC decoder catch the error
+                 */
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_LOST_SYNC:
+                        return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_END_OF_STREAM:
+                        return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_NOT_FLAC:
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_UNSUPPORTED_MAPPING_VERSION:
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT:
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_ERROR:
+                case FLAC__OGG_DECODER_ASPECT_READ_STATUS_MEMORY_ALLOCATION_ERROR:
+                        return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+                default:
+                        FLAC__ASSERT(0);
+                        /* double protection */
+                        return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+        }
+}
+
+FLAC__OggDecoderAspectReadStatus read_callback_proxy_(const void *void_decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+        FLAC__StreamDecoder *decoder = (FLAC__StreamDecoder*)void_decoder;
+
+        switch(decoder->private_->read_callback(decoder, buffer, bytes, client_data)) {
+                case FLAC__STREAM_DECODER_READ_STATUS_CONTINUE:
+                        return FLAC__OGG_DECODER_ASPECT_READ_STATUS_OK;
+                case FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM:
+                        return FLAC__OGG_DECODER_ASPECT_READ_STATUS_END_OF_STREAM;
+                case FLAC__STREAM_DECODER_READ_STATUS_ABORT:
+                        return FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT;
+                default:
+                        /* double protection: */
+                        FLAC__ASSERT(0);
+                        return FLAC__OGG_DECODER_ASPECT_READ_STATUS_ABORT;
+        }
+}
+#endif
+
+FLAC__StreamDecoderWriteStatus write_audio_frame_to_client_(FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[])
+{
+        if(decoder->private_->is_seeking) {
+                FLAC__uint64 this_frame_sample = frame->header.number.sample_number;
+                FLAC__uint64 next_frame_sample = this_frame_sample + (FLAC__uint64)frame->header.blocksize;
+                FLAC__uint64 target_sample = decoder->private_->target_sample;
+
+                FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
+
+#if FLAC__HAS_OGG
+                decoder->private_->got_a_frame = true;
+#endif
+                decoder->private_->last_frame = *frame; /* save the frame */
+                if(this_frame_sample <= target_sample && target_sample < next_frame_sample) { /* we hit our target frame */
+                        unsigned delta = (unsigned)(target_sample - this_frame_sample);
+                        /* kick out of seek mode */
+                        decoder->private_->is_seeking = false;
+                        /* shift out the samples before target_sample */
+                        if(delta > 0) {
+                                unsigned channel;
+                                const FLAC__int32 *newbuffer[FLAC__MAX_CHANNELS];
+                                for(channel = 0; channel < frame->header.channels; channel++)
+                                        newbuffer[channel] = buffer[channel] + delta;
+                                decoder->private_->last_frame.header.blocksize -= delta;
+                                decoder->private_->last_frame.header.number.sample_number += (FLAC__uint64)delta;
+                                /* write the relevant samples */
+                                return decoder->private_->write_callback(decoder, &decoder->private_->last_frame, newbuffer, decoder->private_->client_data);
+                        }
+                        else {
+                                /* write the relevant samples */
+                                return decoder->private_->write_callback(decoder, frame, buffer, decoder->private_->client_data);
+                        }
+                }
+                else {
+                        return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+                }
+        }
+        else {
+                /*
+                 * If we never got STREAMINFO, turn off MD5 checking to save
+                 * cycles since we don't have a sum to compare to anyway
+                 */
+                if(!decoder->private_->has_stream_info)
+                        decoder->private_->do_md5_checking = false;
+                if(decoder->private_->do_md5_checking) {
+                        if(!FLAC__MD5Accumulate(&decoder->private_->md5context, buffer, frame->header.channels, frame->header.blocksize, (frame->header.bits_per_sample+7) / 8))
+                                return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
+                }
+                return decoder->private_->write_callback(decoder, frame, buffer, decoder->private_->client_data);
+        }
+}
+
+void send_error_to_client_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status)
+{
+        if(!decoder->private_->is_seeking)
+                decoder->private_->error_callback(decoder, status, decoder->private_->client_data);
+        else if(status == FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM)
+                decoder->private_->unparseable_frame_count++;
+}
+
+FLAC__bool seek_to_absolute_sample_(FLAC__StreamDecoder *decoder, FLAC__uint64 stream_length, FLAC__uint64 target_sample)
+{
+        FLAC__uint64 first_frame_offset = decoder->private_->first_frame_offset, lower_bound, upper_bound, lower_bound_sample, upper_bound_sample, this_frame_sample;
+        FLAC__int64 pos = -1;
+        int i;
+        unsigned approx_bytes_per_frame;
+        FLAC__bool first_seek = true;
+        const FLAC__uint64 total_samples = FLAC__stream_decoder_get_total_samples(decoder);
+        const unsigned min_blocksize = decoder->private_->stream_info.data.stream_info.min_blocksize;
+        const unsigned max_blocksize = decoder->private_->stream_info.data.stream_info.max_blocksize;
+        const unsigned max_framesize = decoder->private_->stream_info.data.stream_info.max_framesize;
+        const unsigned min_framesize = decoder->private_->stream_info.data.stream_info.min_framesize;
+        /* take these from the current frame in case they've changed mid-stream */
+        unsigned channels = FLAC__stream_decoder_get_channels(decoder);
+        unsigned bps = FLAC__stream_decoder_get_bits_per_sample(decoder);
+        const FLAC__StreamMetadata_SeekTable *seek_table = decoder->private_->has_seek_table? &decoder->private_->seek_table.data.seek_table : 0;
+
+        /* use values from stream info if we didn't decode a frame */
+        if(channels == 0)
+                channels = decoder->private_->stream_info.data.stream_info.channels;
+        if(bps == 0)
+                bps = decoder->private_->stream_info.data.stream_info.bits_per_sample;
+
+        /* we are just guessing here */
+        if(max_framesize > 0)
+                approx_bytes_per_frame = (max_framesize + min_framesize) / 2 + 1;
+        /*
+         * Check if it's a known fixed-blocksize stream.  Note that though
+         * the spec doesn't allow zeroes in the STREAMINFO block, we may
+         * never get a STREAMINFO block when decoding so the value of
+         * min_blocksize might be zero.
+         */
+        else if(min_blocksize == max_blocksize && min_blocksize > 0) {
+                /* note there are no () around 'bps/8' to keep precision up since it's an integer calulation */
+                approx_bytes_per_frame = min_blocksize * channels * bps/8 + 64;
+        }
+        else
+                approx_bytes_per_frame = 4096 * channels * bps/8 + 64;
+
+        /*
+         * First, we set an upper and lower bound on where in the
+         * stream we will search.  For now we assume the worst case
+         * scenario, which is our best guess at the beginning of
+         * the first frame and end of the stream.
+         */
+        lower_bound = first_frame_offset;
+        lower_bound_sample = 0;
+        upper_bound = stream_length;
+        upper_bound_sample = total_samples > 0 ? total_samples : target_sample /*estimate it*/;
+
+        /*
+         * Now we refine the bounds if we have a seektable with
+         * suitable points.  Note that according to the spec they
+         * must be ordered by ascending sample number.
+         *
+         * Note: to protect against invalid seek tables we will ignore points
+         * that have frame_samples==0 or sample_number>=total_samples
+         */
+        if(seek_table) {
+                FLAC__uint64 new_lower_bound = lower_bound;
+                FLAC__uint64 new_upper_bound = upper_bound;
+                FLAC__uint64 new_lower_bound_sample = lower_bound_sample;
+                FLAC__uint64 new_upper_bound_sample = upper_bound_sample;
+
+                /* find the closest seek point <= target_sample, if it exists */
+                for(i = (int)seek_table->num_points - 1; i >= 0; i--) {
+                        if(
+                                seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER &&
+                                seek_table->points[i].frame_samples > 0 && /* defense against bad seekpoints */
+                                (total_samples <= 0 || seek_table->points[i].sample_number < total_samples) && /* defense against bad seekpoints */
+                                seek_table->points[i].sample_number <= target_sample
+                        )
+                                break;
+                }
+                if(i >= 0) { /* i.e. we found a suitable seek point... */
+                        new_lower_bound = first_frame_offset + seek_table->points[i].stream_offset;
+                        new_lower_bound_sample = seek_table->points[i].sample_number;
+                }
+
+                /* find the closest seek point > target_sample, if it exists */
+                for(i = 0; i < (int)seek_table->num_points; i++) {
+                        if(
+                                seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER &&
+                                seek_table->points[i].frame_samples > 0 && /* defense against bad seekpoints */
+                                (total_samples <= 0 || seek_table->points[i].sample_number < total_samples) && /* defense against bad seekpoints */
+                                seek_table->points[i].sample_number > target_sample
+                        )
+                                break;
+                }
+                if(i < (int)seek_table->num_points) { /* i.e. we found a suitable seek point... */
+                        new_upper_bound = first_frame_offset + seek_table->points[i].stream_offset;
+                        new_upper_bound_sample = seek_table->points[i].sample_number;
+                }
+                /* final protection against unsorted seek tables; keep original values if bogus */
+                if(new_upper_bound >= new_lower_bound) {
+                        lower_bound = new_lower_bound;
+                        upper_bound = new_upper_bound;
+                        lower_bound_sample = new_lower_bound_sample;
+                        upper_bound_sample = new_upper_bound_sample;
+                }
+        }
+
+        FLAC__ASSERT(upper_bound_sample >= lower_bound_sample);
+        /* there are 2 insidious ways that the following equality occurs, which
+         * we need to fix:
+         *  1) total_samples is 0 (unknown) and target_sample is 0
+         *  2) total_samples is 0 (unknown) and target_sample happens to be
+         *     exactly equal to the last seek point in the seek table; this
+         *     means there is no seek point above it, and upper_bound_samples
+         *     remains equal to the estimate (of target_samples) we made above
+         * in either case it does not hurt to move upper_bound_sample up by 1
+         */
+        if(upper_bound_sample == lower_bound_sample)
+                upper_bound_sample++;
+
+        decoder->private_->target_sample = target_sample;
+        while(1) {
+                /* check if the bounds are still ok */
+                if (lower_bound_sample >= upper_bound_sample || lower_bound > upper_bound) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                        return false;
+                }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#if defined _MSC_VER || defined __MINGW32__
+                /* with VC++ you have to spoon feed it the casting */
+                pos = (FLAC__int64)lower_bound + (FLAC__int64)((FLAC__double)(FLAC__int64)(target_sample - lower_bound_sample) / (FLAC__double)(FLAC__int64)(upper_bound_sample - lower_bound_sample) * (FLAC__double)(FLAC__int64)(upper_bound - lower_bound)) - approx_bytes_per_frame;
+#else
+                pos = (FLAC__int64)lower_bound + (FLAC__int64)((FLAC__double)(target_sample - lower_bound_sample) / (FLAC__double)(upper_bound_sample - lower_bound_sample) * (FLAC__double)(upper_bound - lower_bound)) - approx_bytes_per_frame;
+#endif
+#else
+                /* a little less accurate: */
+                if(upper_bound - lower_bound < 0xffffffff)
+                        pos = (FLAC__int64)lower_bound + (FLAC__int64)(((target_sample - lower_bound_sample) * (upper_bound - lower_bound)) / (upper_bound_sample - lower_bound_sample)) - approx_bytes_per_frame;
+                else /* @@@ WATCHOUT, ~2TB limit */
+                        pos = (FLAC__int64)lower_bound + (FLAC__int64)((((target_sample - lower_bound_sample)>>8) * ((upper_bound - lower_bound)>>8)) / ((upper_bound_sample - lower_bound_sample)>>16)) - approx_bytes_per_frame;
+#endif
+                if(pos >= (FLAC__int64)upper_bound)
+                        pos = (FLAC__int64)upper_bound - 1;
+                if(pos < (FLAC__int64)lower_bound)
+                        pos = (FLAC__int64)lower_bound;
+                if(decoder->private_->seek_callback(decoder, (FLAC__uint64)pos, decoder->private_->client_data) != FLAC__STREAM_DECODER_SEEK_STATUS_OK) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                        return false;
+                }
+                if(!FLAC__stream_decoder_flush(decoder)) {
+                        /* above call sets the state for us */
+                        return false;
+                }
+                /* Now we need to get a frame.  First we need to reset our
+                 * unparseable_frame_count; if we get too many unparseable
+                 * frames in a row, the read callback will return
+                 * FLAC__STREAM_DECODER_READ_STATUS_ABORT, causing
+                 * FLAC__stream_decoder_process_single() to return false.
+                 */
+                decoder->private_->unparseable_frame_count = 0;
+                if(!FLAC__stream_decoder_process_single(decoder)) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                        return false;
+                }
+                /* our write callback will change the state when it gets to the target frame */
+                /* actually, we could have got_a_frame if our decoder is at FLAC__STREAM_DECODER_END_OF_STREAM so we need to check for that also */
+#if 0
+                /*@@@@@@ used to be the following; not clear if the check for end of stream is needed anymore */
+                if(decoder->protected_->state != FLAC__SEEKABLE_STREAM_DECODER_SEEKING && decoder->protected_->state != FLAC__STREAM_DECODER_END_OF_STREAM)
+                        break;
+#endif
+                if(!decoder->private_->is_seeking)
+                        break;
+
+                FLAC__ASSERT(decoder->private_->last_frame.header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
+                this_frame_sample = decoder->private_->last_frame.header.number.sample_number;
+
+                if (0 == decoder->private_->samples_decoded || (this_frame_sample + decoder->private_->last_frame.header.blocksize >= upper_bound_sample && !first_seek)) {
+                        if (pos == (FLAC__int64)lower_bound) {
+                                /* can't move back any more than the first frame, something is fatally wrong */
+                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                return false;
+                        }
+                        /* our last move backwards wasn't big enough, try again */
+                        approx_bytes_per_frame = approx_bytes_per_frame? approx_bytes_per_frame * 2 : 16;
+                        continue;       
+                }
+                /* allow one seek over upper bound, so we can get a correct upper_bound_sample for streams with unknown total_samples */
+                first_seek = false;
+                
+                /* make sure we are not seeking in corrupted stream */
+                if (this_frame_sample < lower_bound_sample) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                        return false;
+                }
+
+                /* we need to narrow the search */
+                if(target_sample < this_frame_sample) {
+                        upper_bound_sample = this_frame_sample + decoder->private_->last_frame.header.blocksize;
+/*@@@@@@ what will decode position be if at end of stream? */
+                        if(!FLAC__stream_decoder_get_decode_position(decoder, &upper_bound)) {
+                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                return false;
+                        }
+                        approx_bytes_per_frame = (unsigned)(2 * (upper_bound - pos) / 3 + 16);
+                }
+                else { /* target_sample >= this_frame_sample + this frame's blocksize */
+                        lower_bound_sample = this_frame_sample + decoder->private_->last_frame.header.blocksize;
+                        if(!FLAC__stream_decoder_get_decode_position(decoder, &lower_bound)) {
+                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                return false;
+                        }
+                        approx_bytes_per_frame = (unsigned)(2 * (lower_bound - pos) / 3 + 16);
+                }
+        }
+
+        return true;
+}
+
+#if FLAC__HAS_OGG
+FLAC__bool seek_to_absolute_sample_ogg_(FLAC__StreamDecoder *decoder, FLAC__uint64 stream_length, FLAC__uint64 target_sample)
+{
+        FLAC__uint64 left_pos = 0, right_pos = stream_length;
+        FLAC__uint64 left_sample = 0, right_sample = FLAC__stream_decoder_get_total_samples(decoder);
+        FLAC__uint64 this_frame_sample = (FLAC__uint64)0 - 1;
+        FLAC__uint64 pos = 0; /* only initialized to avoid compiler warning */
+        FLAC__bool did_a_seek;
+        unsigned iteration = 0;
+
+        /* In the first iterations, we will calculate the target byte position 
+         * by the distance from the target sample to left_sample and
+         * right_sample (let's call it "proportional search").  After that, we
+         * will switch to binary search.
+         */
+        unsigned BINARY_SEARCH_AFTER_ITERATION = 2;
+
+        /* We will switch to a linear search once our current sample is less
+         * than this number of samples ahead of the target sample
+         */
+        static const FLAC__uint64 LINEAR_SEARCH_WITHIN_SAMPLES = FLAC__MAX_BLOCK_SIZE * 2;
+
+        /* If the total number of samples is unknown, use a large value, and
+         * force binary search immediately.
+         */
+        if(right_sample == 0) {
+                right_sample = (FLAC__uint64)(-1);
+                BINARY_SEARCH_AFTER_ITERATION = 0;
+        }
+
+        decoder->private_->target_sample = target_sample;
+        for( ; ; iteration++) {
+                if (iteration == 0 || this_frame_sample > target_sample || target_sample - this_frame_sample > LINEAR_SEARCH_WITHIN_SAMPLES) {
+                        if (iteration >= BINARY_SEARCH_AFTER_ITERATION) {
+                                pos = (right_pos + left_pos) / 2;
+                        }
+                        else {
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#if defined _MSC_VER || defined __MINGW32__
+                                /* with MSVC you have to spoon feed it the casting */
+                                pos = (FLAC__uint64)((FLAC__double)(FLAC__int64)(target_sample - left_sample) / (FLAC__double)(FLAC__int64)(right_sample - left_sample) * (FLAC__double)(FLAC__int64)(right_pos - left_pos));
+#else
+                                pos = (FLAC__uint64)((FLAC__double)(target_sample - left_sample) / (FLAC__double)(right_sample - left_sample) * (FLAC__double)(right_pos - left_pos));
+#endif
+#else
+                                /* a little less accurate: */
+                                if ((target_sample-left_sample <= 0xffffffff) && (right_pos-left_pos <= 0xffffffff))
+                                        pos = (FLAC__int64)(((target_sample-left_sample) * (right_pos-left_pos)) / (right_sample-left_sample));
+                                else /* @@@ WATCHOUT, ~2TB limit */
+                                        pos = (FLAC__int64)((((target_sample-left_sample)>>8) * ((right_pos-left_pos)>>8)) / ((right_sample-left_sample)>>16));
+#endif
+                                /* @@@ TODO: might want to limit pos to some distance
+                                 * before EOF, to make sure we land before the last frame,
+                                 * thereby getting a this_frame_sample and so having a better
+                                 * estimate.
+                                 */
+                        }
+
+                        /* physical seek */
+                        if(decoder->private_->seek_callback((FLAC__StreamDecoder*)decoder, (FLAC__uint64)pos, decoder->private_->client_data) != FLAC__STREAM_DECODER_SEEK_STATUS_OK) {
+                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                return false;
+                        }
+                        if(!FLAC__stream_decoder_flush(decoder)) {
+                                /* above call sets the state for us */
+                                return false;
+                        }
+                        did_a_seek = true;
+                }
+                else
+                        did_a_seek = false;
+
+                decoder->private_->got_a_frame = false;
+                if(!FLAC__stream_decoder_process_single(decoder)) {
+                        decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                        return false;
+                }
+                if(!decoder->private_->got_a_frame) {
+                        if(did_a_seek) {
+                                /* this can happen if we seek to a point after the last frame; we drop
+                                 * to binary search right away in this case to avoid any wasted
+                                 * iterations of proportional search.
+                                 */
+                                right_pos = pos;
+                                BINARY_SEARCH_AFTER_ITERATION = 0;
+                        }
+                        else {
+                                /* this can probably only happen if total_samples is unknown and the
+                                 * target_sample is past the end of the stream
+                                 */
+                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                return false;
+                        }
+                }
+                /* our write callback will change the state when it gets to the target frame */
+                else if(!decoder->private_->is_seeking) {
+                        break;
+                }
+                else {
+                        this_frame_sample = decoder->private_->last_frame.header.number.sample_number;
+                        FLAC__ASSERT(decoder->private_->last_frame.header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
+
+                        if (did_a_seek) {
+                                if (this_frame_sample <= target_sample) {
+                                        /* The 'equal' case should not happen, since
+                                         * FLAC__stream_decoder_process_single()
+                                         * should recognize that it has hit the
+                                         * target sample and we would exit through
+                                         * the 'break' above.
+                                         */
+                                        FLAC__ASSERT(this_frame_sample != target_sample);
+
+                                        left_sample = this_frame_sample;
+                                        /* sanity check to avoid infinite loop */
+                                        if (left_pos == pos) {
+                                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                                return false;
+                                        }
+                                        left_pos = pos;
+                                }
+                                else if(this_frame_sample > target_sample) {
+                                        right_sample = this_frame_sample;
+                                        /* sanity check to avoid infinite loop */
+                                        if (right_pos == pos) {
+                                                decoder->protected_->state = FLAC__STREAM_DECODER_SEEK_ERROR;
+                                                return false;
+                                        }
+                                        right_pos = pos;
+                                }
+                        }
+                }
+        }
+
+        return true;
+}
+#endif
+
+FLAC__StreamDecoderReadStatus file_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+        (void)client_data;
+
+        if(*bytes > 0) {
+                *bytes = fread(buffer, sizeof(FLAC__byte), *bytes, decoder->private_->file);
+                if(ferror(decoder->private_->file))
+                        return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+                else if(*bytes == 0)
+                        return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+                else
+                        return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+        }
+        else
+                return FLAC__STREAM_DECODER_READ_STATUS_ABORT; /* abort to avoid a deadlock */
+}
+
+FLAC__StreamDecoderSeekStatus file_seek_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
+{
+        (void)client_data;
+
+        if(decoder->private_->file == stdin)
+                return FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
+        else if(fseeko(decoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
+                return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
+        else
+                return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
+}
+
+FLAC__StreamDecoderTellStatus file_tell_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
+{
+        off_t pos;
+        (void)client_data;
+
+        if(decoder->private_->file == stdin)
+                return FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED;
+        else if((pos = ftello(decoder->private_->file)) < 0)
+                return FLAC__STREAM_DECODER_TELL_STATUS_ERROR;
+        else {
+                *absolute_byte_offset = (FLAC__uint64)pos;
+                return FLAC__STREAM_DECODER_TELL_STATUS_OK;
+        }
+}
+
+FLAC__StreamDecoderLengthStatus file_length_callback_(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
+{
+        struct stat filestats;
+        (void)client_data;
+
+        if(decoder->private_->file == stdin)
+                return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
+        else if(fstat(fileno(decoder->private_->file), &filestats) != 0)
+                return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
+        else {
+                *stream_length = (FLAC__uint64)filestats.st_size;
+                return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
+        }
+}
+
+FLAC__bool file_eof_callback_(const FLAC__StreamDecoder *decoder, void *client_data)
+{
+        (void)client_data;
+
+        return feof(decoder->private_->file)? true : false;
+}