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Unified Diff: flac/src/libFLAC/stream_encoder.c

Issue 6122009: Add FLAC to trunk/deps/third_party/.... (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/
Patch Set: '' Created 9 years, 11 months ago
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Index: flac/src/libFLAC/stream_encoder.c
===================================================================
--- flac/src/libFLAC/stream_encoder.c (revision 0)
+++ flac/src/libFLAC/stream_encoder.c (revision 0)
@@ -0,0 +1,4359 @@
+/* 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 <limits.h>
+#include <stdio.h>
+#include <stdlib.h> /* for malloc() */
+#include <string.h> /* for memcpy() */
+#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 "FLAC/stream_decoder.h"
+#include "share/alloc.h"
+#include "protected/stream_encoder.h"
+#include "private/bitwriter.h"
+#include "private/bitmath.h"
+#include "private/crc.h"
+#include "private/cpu.h"
+#include "private/fixed.h"
+#include "private/format.h"
+#include "private/lpc.h"
+#include "private/md5.h"
+#include "private/memory.h"
+#if FLAC__HAS_OGG
+#include "private/ogg_helper.h"
+#include "private/ogg_mapping.h"
+#endif
+#include "private/stream_encoder_framing.h"
+#include "private/window.h"
+
+#ifndef FLaC__INLINE
+#define FLaC__INLINE
+#endif
+
+#ifdef min
+#undef min
+#endif
+#define min(x,y) ((x)<(y)?(x):(y))
+
+#ifdef max
+#undef max
+#endif
+#define max(x,y) ((x)>(y)?(x):(y))
+
+/* Exact Rice codeword length calculation is off by default. The simple
+ * (and fast) estimation (of how many bits a residual value will be
+ * encoded with) in this encoder is very good, almost always yielding
+ * compression within 0.1% of exact calculation.
+ */
+#undef EXACT_RICE_BITS_CALCULATION
+/* Rice parameter searching is off by default. The simple (and fast)
+ * parameter estimation in this encoder is very good, almost always
+ * yielding compression within 0.1% of the optimal parameters.
+ */
+#undef ENABLE_RICE_PARAMETER_SEARCH
+
+
+typedef struct {
+ FLAC__int32 *data[FLAC__MAX_CHANNELS];
+ unsigned size; /* of each data[] in samples */
+ unsigned tail;
+} verify_input_fifo;
+
+typedef struct {
+ const FLAC__byte *data;
+ unsigned capacity;
+ unsigned bytes;
+} verify_output;
+
+typedef enum {
+ ENCODER_IN_MAGIC = 0,
+ ENCODER_IN_METADATA = 1,
+ ENCODER_IN_AUDIO = 2
+} EncoderStateHint;
+
+static struct CompressionLevels {
+ FLAC__bool do_mid_side_stereo;
+ FLAC__bool loose_mid_side_stereo;
+ unsigned max_lpc_order;
+ unsigned qlp_coeff_precision;
+ FLAC__bool do_qlp_coeff_prec_search;
+ FLAC__bool do_escape_coding;
+ FLAC__bool do_exhaustive_model_search;
+ unsigned min_residual_partition_order;
+ unsigned max_residual_partition_order;
+ unsigned rice_parameter_search_dist;
+} compression_levels_[] = {
+ { false, false, 0, 0, false, false, false, 0, 3, 0 },
+ { true , true , 0, 0, false, false, false, 0, 3, 0 },
+ { true , false, 0, 0, false, false, false, 0, 3, 0 },
+ { false, false, 6, 0, false, false, false, 0, 4, 0 },
+ { true , true , 8, 0, false, false, false, 0, 4, 0 },
+ { true , false, 8, 0, false, false, false, 0, 5, 0 },
+ { true , false, 8, 0, false, false, false, 0, 6, 0 },
+ { true , false, 8, 0, false, false, true , 0, 6, 0 },
+ { true , false, 12, 0, false, false, true , 0, 6, 0 }
+};
+
+
+/***********************************************************************
+ *
+ * Private class method prototypes
+ *
+ ***********************************************************************/
+
+static void set_defaults_(FLAC__StreamEncoder *encoder);
+static void free_(FLAC__StreamEncoder *encoder);
+static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize);
+static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block);
+static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block);
+static void update_metadata_(const FLAC__StreamEncoder *encoder);
+#if FLAC__HAS_OGG
+static void update_ogg_metadata_(FLAC__StreamEncoder *encoder);
+#endif
+static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block);
+static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block);
+
+static FLAC__bool process_subframe_(
+ FLAC__StreamEncoder *encoder,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ const FLAC__FrameHeader *frame_header,
+ unsigned subframe_bps,
+ const FLAC__int32 integer_signal[],
+ FLAC__Subframe *subframe[2],
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
+ FLAC__int32 *residual[2],
+ unsigned *best_subframe,
+ unsigned *best_bits
+);
+
+static FLAC__bool add_subframe_(
+ FLAC__StreamEncoder *encoder,
+ unsigned blocksize,
+ unsigned subframe_bps,
+ const FLAC__Subframe *subframe,
+ FLAC__BitWriter *frame
+);
+
+static unsigned evaluate_constant_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal,
+ unsigned blocksize,
+ unsigned subframe_bps,
+ FLAC__Subframe *subframe
+);
+
+static unsigned evaluate_fixed_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ unsigned order,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__Subframe *subframe,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
+);
+
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+static unsigned evaluate_lpc_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ const FLAC__real lp_coeff[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ unsigned order,
+ unsigned qlp_coeff_precision,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__Subframe *subframe,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
+);
+#endif
+
+static unsigned evaluate_verbatim_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ FLAC__Subframe *subframe
+);
+
+static unsigned find_best_partition_order_(
+ struct FLAC__StreamEncoderPrivate *private_,
+ const FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ unsigned bps,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__EntropyCodingMethod *best_ecm
+);
+
+static void precompute_partition_info_sums_(
+ const FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ unsigned bps
+);
+
+static void precompute_partition_info_escapes_(
+ const FLAC__int32 residual[],
+ unsigned raw_bits_per_partition[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned min_partition_order,
+ unsigned max_partition_order
+);
+
+static FLAC__bool set_partitioned_rice_(
+#ifdef EXACT_RICE_BITS_CALCULATION
+ const FLAC__int32 residual[],
+#endif
+ const FLAC__uint64 abs_residual_partition_sums[],
+ const unsigned raw_bits_per_partition[],
+ const unsigned residual_samples,
+ const unsigned predictor_order,
+ const unsigned suggested_rice_parameter,
+ const unsigned rice_parameter_limit,
+ const unsigned rice_parameter_search_dist,
+ const unsigned partition_order,
+ const FLAC__bool search_for_escapes,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
+ unsigned *bits
+);
+
+static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples);
+
+/* verify-related routines: */
+static void append_to_verify_fifo_(
+ verify_input_fifo *fifo,
+ const FLAC__int32 * const input[],
+ unsigned input_offset,
+ unsigned channels,
+ unsigned wide_samples
+);
+
+static void append_to_verify_fifo_interleaved_(
+ verify_input_fifo *fifo,
+ const FLAC__int32 input[],
+ unsigned input_offset,
+ unsigned channels,
+ unsigned wide_samples
+);
+
+static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
+static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
+static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
+
+static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
+static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
+static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
+static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data);
+static FILE *get_binary_stdout_(void);
+
+
+/***********************************************************************
+ *
+ * Private class data
+ *
+ ***********************************************************************/
+
+typedef struct FLAC__StreamEncoderPrivate {
+ unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */
+ FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */
+ FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */
+ FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */
+ FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */
+ FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */
+#endif
+ unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */
+ unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */
+ FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */
+ FLAC__int32 *residual_workspace_mid_side[2][2];
+ FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2];
+ FLAC__Subframe subframe_workspace_mid_side[2][2];
+ FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2];
+ FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2];
+ FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2];
+ FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2];
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2];
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2];
+ unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */
+ unsigned best_subframe_mid_side[2];
+ unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */
+ unsigned best_subframe_bits_mid_side[2];
+ FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */
+ unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */
+ FLAC__BitWriter *frame; /* the current frame being worked on */
+ unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */
+ unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */
+ FLAC__ChannelAssignment last_channel_assignment;
+ FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */
+ FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */
+ unsigned current_sample_number;
+ unsigned current_frame_number;
+ FLAC__MD5Context md5context;
+ FLAC__CPUInfo cpuinfo;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
+#else
+ unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
+#endif
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]);
+ void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
+ void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
+ void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]);
+#endif
+ FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */
+ FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */
+ FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */
+ FLAC__bool disable_constant_subframes;
+ FLAC__bool disable_fixed_subframes;
+ FLAC__bool disable_verbatim_subframes;
+#if FLAC__HAS_OGG
+ FLAC__bool is_ogg;
+#endif
+ FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */
+ FLAC__StreamEncoderSeekCallback seek_callback;
+ FLAC__StreamEncoderTellCallback tell_callback;
+ FLAC__StreamEncoderWriteCallback write_callback;
+ FLAC__StreamEncoderMetadataCallback metadata_callback;
+ FLAC__StreamEncoderProgressCallback progress_callback;
+ void *client_data;
+ unsigned first_seekpoint_to_check;
+ FILE *file; /* only used when encoding to a file */
+ FLAC__uint64 bytes_written;
+ FLAC__uint64 samples_written;
+ unsigned frames_written;
+ unsigned total_frames_estimate;
+ /* unaligned (original) pointers to allocated data */
+ FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS];
+ FLAC__int32 *integer_signal_mid_side_unaligned[2];
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */
+ FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */
+ FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS];
+ FLAC__real *windowed_signal_unaligned;
+#endif
+ FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2];
+ FLAC__int32 *residual_workspace_mid_side_unaligned[2][2];
+ FLAC__uint64 *abs_residual_partition_sums_unaligned;
+ unsigned *raw_bits_per_partition_unaligned;
+ /*
+ * These fields have been moved here from private function local
+ * declarations merely to save stack space during encoding.
+ */
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */
+#endif
+ FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */
+ /*
+ * The data for the verify section
+ */
+ struct {
+ FLAC__StreamDecoder *decoder;
+ EncoderStateHint state_hint;
+ FLAC__bool needs_magic_hack;
+ verify_input_fifo input_fifo;
+ verify_output output;
+ struct {
+ FLAC__uint64 absolute_sample;
+ unsigned frame_number;
+ unsigned channel;
+ unsigned sample;
+ FLAC__int32 expected;
+ FLAC__int32 got;
+ } error_stats;
+ } verify;
+ FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */
+} FLAC__StreamEncoderPrivate;
+
+/***********************************************************************
+ *
+ * Public static class data
+ *
+ ***********************************************************************/
+
+FLAC_API const char * const FLAC__StreamEncoderStateString[] = {
+ "FLAC__STREAM_ENCODER_OK",
+ "FLAC__STREAM_ENCODER_UNINITIALIZED",
+ "FLAC__STREAM_ENCODER_OGG_ERROR",
+ "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR",
+ "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA",
+ "FLAC__STREAM_ENCODER_CLIENT_ERROR",
+ "FLAC__STREAM_ENCODER_IO_ERROR",
+ "FLAC__STREAM_ENCODER_FRAMING_ERROR",
+ "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR"
+};
+
+FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = {
+ "FLAC__STREAM_ENCODER_INIT_STATUS_OK",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA",
+ "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED"
+};
+
+FLAC_API const char * const FLAC__treamEncoderReadStatusString[] = {
+ "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE",
+ "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM",
+ "FLAC__STREAM_ENCODER_READ_STATUS_ABORT",
+ "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED"
+};
+
+FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = {
+ "FLAC__STREAM_ENCODER_WRITE_STATUS_OK",
+ "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR"
+};
+
+FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = {
+ "FLAC__STREAM_ENCODER_SEEK_STATUS_OK",
+ "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR",
+ "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED"
+};
+
+FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = {
+ "FLAC__STREAM_ENCODER_TELL_STATUS_OK",
+ "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR",
+ "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED"
+};
+
+/* Number of samples that will be overread to watch for end of stream. By
+ * 'overread', we mean that the FLAC__stream_encoder_process*() calls will
+ * always try to read blocksize+1 samples before encoding a block, so that
+ * even if the stream has a total sample count that is an integral multiple
+ * of the blocksize, we will still notice when we are encoding the last
+ * block. This is needed, for example, to correctly set the end-of-stream
+ * marker in Ogg FLAC.
+ *
+ * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's
+ * not really any reason to change it.
+ */
+static const unsigned OVERREAD_ = 1;
+
+/***********************************************************************
+ *
+ * Class constructor/destructor
+ *
+ */
+FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void)
+{
+ FLAC__StreamEncoder *encoder;
+ unsigned i;
+
+ FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
+
+ encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder));
+ if(encoder == 0) {
+ return 0;
+ }
+
+ encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected));
+ if(encoder->protected_ == 0) {
+ free(encoder);
+ return 0;
+ }
+
+ encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate));
+ if(encoder->private_ == 0) {
+ free(encoder->protected_);
+ free(encoder);
+ return 0;
+ }
+
+ encoder->private_->frame = FLAC__bitwriter_new();
+ if(encoder->private_->frame == 0) {
+ free(encoder->private_);
+ free(encoder->protected_);
+ free(encoder);
+ return 0;
+ }
+
+ encoder->private_->file = 0;
+
+ set_defaults_(encoder);
+
+ encoder->private_->is_being_deleted = false;
+
+ for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+ encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0];
+ encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1];
+ }
+ for(i = 0; i < 2; i++) {
+ encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0];
+ encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1];
+ }
+ for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+ encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0];
+ encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1];
+ }
+ for(i = 0; i < 2; i++) {
+ encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0];
+ encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1];
+ }
+
+ for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
+ }
+ for(i = 0; i < 2; i++) {
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
+ }
+ for(i = 0; i < 2; i++)
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]);
+
+ encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
+
+ return encoder;
+}
+
+FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder)
+{
+ unsigned i;
+
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->protected_);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->private_->frame);
+
+ encoder->private_->is_being_deleted = true;
+
+ (void)FLAC__stream_encoder_finish(encoder);
+
+ if(0 != encoder->private_->verify.decoder)
+ FLAC__stream_decoder_delete(encoder->private_->verify.decoder);
+
+ for(i = 0; i < FLAC__MAX_CHANNELS; i++) {
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]);
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]);
+ }
+ for(i = 0; i < 2; i++) {
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]);
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]);
+ }
+ for(i = 0; i < 2; i++)
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]);
+
+ FLAC__bitwriter_delete(encoder->private_->frame);
+ free(encoder->private_);
+ free(encoder->protected_);
+ free(encoder);
+}
+
+/***********************************************************************
+ *
+ * Public class methods
+ *
+ ***********************************************************************/
+
+static FLAC__StreamEncoderInitStatus init_stream_internal_(
+ FLAC__StreamEncoder *encoder,
+ FLAC__StreamEncoderReadCallback read_callback,
+ FLAC__StreamEncoderWriteCallback write_callback,
+ FLAC__StreamEncoderSeekCallback seek_callback,
+ FLAC__StreamEncoderTellCallback tell_callback,
+ FLAC__StreamEncoderMetadataCallback metadata_callback,
+ void *client_data,
+ FLAC__bool is_ogg
+)
+{
+ unsigned i;
+ FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2;
+
+ FLAC__ASSERT(0 != encoder);
+
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+#if !FLAC__HAS_OGG
+ if(is_ogg)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER;
+#endif
+
+ if(0 == write_callback || (seek_callback && 0 == tell_callback))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS;
+
+ if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS;
+
+ if(encoder->protected_->channels != 2) {
+ encoder->protected_->do_mid_side_stereo = false;
+ encoder->protected_->loose_mid_side_stereo = false;
+ }
+ else if(!encoder->protected_->do_mid_side_stereo)
+ encoder->protected_->loose_mid_side_stereo = false;
+
+ if(encoder->protected_->bits_per_sample >= 32)
+ encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */
+
+ if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE;
+
+ if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE;
+
+ if(encoder->protected_->blocksize == 0) {
+ if(encoder->protected_->max_lpc_order == 0)
+ encoder->protected_->blocksize = 1152;
+ else
+ encoder->protected_->blocksize = 4096;
+ }
+
+ if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE;
+
+ if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER;
+
+ if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER;
+
+ if(encoder->protected_->qlp_coeff_precision == 0) {
+ if(encoder->protected_->bits_per_sample < 16) {
+ /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */
+ /* @@@ until then we'll make a guess */
+ encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2);
+ }
+ else if(encoder->protected_->bits_per_sample == 16) {
+ if(encoder->protected_->blocksize <= 192)
+ encoder->protected_->qlp_coeff_precision = 7;
+ else if(encoder->protected_->blocksize <= 384)
+ encoder->protected_->qlp_coeff_precision = 8;
+ else if(encoder->protected_->blocksize <= 576)
+ encoder->protected_->qlp_coeff_precision = 9;
+ else if(encoder->protected_->blocksize <= 1152)
+ encoder->protected_->qlp_coeff_precision = 10;
+ else if(encoder->protected_->blocksize <= 2304)
+ encoder->protected_->qlp_coeff_precision = 11;
+ else if(encoder->protected_->blocksize <= 4608)
+ encoder->protected_->qlp_coeff_precision = 12;
+ else
+ encoder->protected_->qlp_coeff_precision = 13;
+ }
+ else {
+ if(encoder->protected_->blocksize <= 384)
+ encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2;
+ else if(encoder->protected_->blocksize <= 1152)
+ encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1;
+ else
+ encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
+ }
+ FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION);
+ }
+ else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION;
+
+ if(encoder->protected_->streamable_subset) {
+ if(
+ encoder->protected_->blocksize != 192 &&
+ encoder->protected_->blocksize != 576 &&
+ encoder->protected_->blocksize != 1152 &&
+ encoder->protected_->blocksize != 2304 &&
+ encoder->protected_->blocksize != 4608 &&
+ encoder->protected_->blocksize != 256 &&
+ encoder->protected_->blocksize != 512 &&
+ encoder->protected_->blocksize != 1024 &&
+ encoder->protected_->blocksize != 2048 &&
+ encoder->protected_->blocksize != 4096 &&
+ encoder->protected_->blocksize != 8192 &&
+ encoder->protected_->blocksize != 16384
+ )
+ return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
+ if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
+ if(
+ encoder->protected_->bits_per_sample != 8 &&
+ encoder->protected_->bits_per_sample != 12 &&
+ encoder->protected_->bits_per_sample != 16 &&
+ encoder->protected_->bits_per_sample != 20 &&
+ encoder->protected_->bits_per_sample != 24
+ )
+ return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
+ if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
+ if(
+ encoder->protected_->sample_rate <= 48000 &&
+ (
+ encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ ||
+ encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ
+ )
+ ) {
+ return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE;
+ }
+ }
+
+ if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
+ encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1;
+ if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order)
+ encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order;
+
+#if FLAC__HAS_OGG
+ /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */
+ if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) {
+ unsigned i;
+ for(i = 1; i < encoder->protected_->num_metadata_blocks; i++) {
+ if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+ FLAC__StreamMetadata *vc = encoder->protected_->metadata[i];
+ for( ; i > 0; i--)
+ encoder->protected_->metadata[i] = encoder->protected_->metadata[i-1];
+ encoder->protected_->metadata[0] = vc;
+ break;
+ }
+ }
+ }
+#endif
+ /* keep track of any SEEKTABLE block */
+ if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) {
+ unsigned i;
+ for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
+ if(0 != encoder->protected_->metadata[i] && encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) {
+ encoder->private_->seek_table = &encoder->protected_->metadata[i]->data.seek_table;
+ break; /* take only the first one */
+ }
+ }
+ }
+
+ /* validate metadata */
+ if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ metadata_has_seektable = false;
+ metadata_has_vorbis_comment = false;
+ metadata_picture_has_type1 = false;
+ metadata_picture_has_type2 = false;
+ for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
+ const FLAC__StreamMetadata *m = encoder->protected_->metadata[i];
+ if(m->type == FLAC__METADATA_TYPE_STREAMINFO)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) {
+ if(metadata_has_seektable) /* only one is allowed */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ metadata_has_seektable = true;
+ if(!FLAC__format_seektable_is_legal(&m->data.seek_table))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ }
+ else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+ if(metadata_has_vorbis_comment) /* only one is allowed */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ metadata_has_vorbis_comment = true;
+ }
+ else if(m->type == FLAC__METADATA_TYPE_CUESHEET) {
+ if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ }
+ else if(m->type == FLAC__METADATA_TYPE_PICTURE) {
+ if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0))
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
+ if(metadata_picture_has_type1) /* there should only be 1 per stream */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ metadata_picture_has_type1 = true;
+ /* standard icon must be 32x32 pixel PNG */
+ if(
+ m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD &&
+ (
+ (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) ||
+ m->data.picture.width != 32 ||
+ m->data.picture.height != 32
+ )
+ )
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ }
+ else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
+ if(metadata_picture_has_type2) /* there should only be 1 per stream */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA;
+ metadata_picture_has_type2 = true;
+ }
+ }
+ }
+
+ encoder->private_->input_capacity = 0;
+ for(i = 0; i < encoder->protected_->channels; i++) {
+ encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0;
+#endif
+ }
+ for(i = 0; i < 2; i++) {
+ encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0;
+#endif
+ }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ for(i = 0; i < encoder->protected_->num_apodizations; i++)
+ encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0;
+ encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0;
+#endif
+ for(i = 0; i < encoder->protected_->channels; i++) {
+ encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0;
+ encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0;
+ encoder->private_->best_subframe[i] = 0;
+ }
+ for(i = 0; i < 2; i++) {
+ encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0;
+ encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0;
+ encoder->private_->best_subframe_mid_side[i] = 0;
+ }
+ encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0;
+ encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5);
+#else
+ /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */
+ /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply&divide by hand */
+ FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350);
+ FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535);
+ FLAC__ASSERT(encoder->protected_->sample_rate <= 655350);
+ FLAC__ASSERT(encoder->protected_->blocksize <= 65535);
+ encoder->private_->loose_mid_side_stereo_frames = (unsigned)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF);
+#endif
+ if(encoder->private_->loose_mid_side_stereo_frames == 0)
+ encoder->private_->loose_mid_side_stereo_frames = 1;
+ encoder->private_->loose_mid_side_stereo_frame_count = 0;
+ encoder->private_->current_sample_number = 0;
+ encoder->private_->current_frame_number = 0;
+
+ encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30);
+ encoder->private_->use_wide_by_order = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(max(encoder->protected_->max_lpc_order, FLAC__MAX_FIXED_ORDER))+1 > 30); /*@@@ need to use this? */
+ encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */
+
+ /*
+ * get the CPU info and set the function pointers
+ */
+ FLAC__cpu_info(&encoder->private_->cpuinfo);
+ /* first default to the non-asm routines */
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation;
+#endif
+ encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients;
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide;
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients;
+#endif
+ /* now override with asm where appropriate */
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+# ifndef FLAC__NO_ASM
+ if(encoder->private_->cpuinfo.use_asm) {
+# ifdef FLAC__CPU_IA32
+ FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32);
+# ifdef FLAC__HAS_NASM
+ if(encoder->private_->cpuinfo.data.ia32.sse) {
+ if(encoder->protected_->max_lpc_order < 4)
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4;
+ else if(encoder->protected_->max_lpc_order < 8)
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8;
+ else if(encoder->protected_->max_lpc_order < 12)
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12;
+ else
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
+ }
+ else if(encoder->private_->cpuinfo.data.ia32._3dnow)
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow;
+ else
+ encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32;
+ if(encoder->private_->cpuinfo.data.ia32.mmx) {
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx;
+ }
+ else {
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32;
+ }
+ if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov)
+ encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov;
+# endif /* FLAC__HAS_NASM */
+# endif /* FLAC__CPU_IA32 */
+ }
+# endif /* !FLAC__NO_ASM */
+#endif /* !FLAC__INTEGER_ONLY_LIBRARY */
+ /* finally override based on wide-ness if necessary */
+ if(encoder->private_->use_wide_by_block) {
+ encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide;
+ }
+
+ /* set state to OK; from here on, errors are fatal and we'll override the state then */
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OK;
+
+#if FLAC__HAS_OGG
+ encoder->private_->is_ogg = is_ogg;
+ if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+#endif
+
+ encoder->private_->read_callback = read_callback;
+ encoder->private_->write_callback = write_callback;
+ encoder->private_->seek_callback = seek_callback;
+ encoder->private_->tell_callback = tell_callback;
+ encoder->private_->metadata_callback = metadata_callback;
+ encoder->private_->client_data = client_data;
+
+ if(!resize_buffers_(encoder, encoder->protected_->blocksize)) {
+ /* the above function sets the state for us in case of an error */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ if(!FLAC__bitwriter_init(encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ /*
+ * Set up the verify stuff if necessary
+ */
+ if(encoder->protected_->verify) {
+ /*
+ * First, set up the fifo which will hold the
+ * original signal to compare against
+ */
+ encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_;
+ for(i = 0; i < encoder->protected_->channels; i++) {
+ if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)safe_malloc_mul_2op_(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ }
+ encoder->private_->verify.input_fifo.tail = 0;
+
+ /*
+ * Now set up a stream decoder for verification
+ */
+ encoder->private_->verify.decoder = FLAC__stream_decoder_new();
+ if(0 == encoder->private_->verify.decoder) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ if(FLAC__stream_decoder_init_stream(encoder->private_->verify.decoder, verify_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, verify_write_callback_, verify_metadata_callback_, verify_error_callback_, /*client_data=*/encoder) != FLAC__STREAM_DECODER_INIT_STATUS_OK) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ }
+ encoder->private_->verify.error_stats.absolute_sample = 0;
+ encoder->private_->verify.error_stats.frame_number = 0;
+ encoder->private_->verify.error_stats.channel = 0;
+ encoder->private_->verify.error_stats.sample = 0;
+ encoder->private_->verify.error_stats.expected = 0;
+ encoder->private_->verify.error_stats.got = 0;
+
+ /*
+ * These must be done before we write any metadata, because that
+ * calls the write_callback, which uses these values.
+ */
+ encoder->private_->first_seekpoint_to_check = 0;
+ encoder->private_->samples_written = 0;
+ encoder->protected_->streaminfo_offset = 0;
+ encoder->protected_->seektable_offset = 0;
+ encoder->protected_->audio_offset = 0;
+
+ /*
+ * write the stream header
+ */
+ if(encoder->protected_->verify)
+ encoder->private_->verify.state_hint = ENCODER_IN_MAGIC;
+ if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
+ /* the above function sets the state for us in case of an error */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ /*
+ * write the STREAMINFO metadata block
+ */
+ if(encoder->protected_->verify)
+ encoder->private_->verify.state_hint = ENCODER_IN_METADATA;
+ encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO;
+ encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */
+ encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
+ encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */
+ encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize;
+ encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */
+ encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */
+ encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate;
+ encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels;
+ encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample;
+ encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */
+ memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */
+ if(encoder->protected_->do_md5)
+ FLAC__MD5Init(&encoder->private_->md5context);
+ if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
+ /* the above function sets the state for us in case of an error */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ /*
+ * Now that the STREAMINFO block is written, we can init this to an
+ * absurdly-high value...
+ */
+ encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1;
+ /* ... and clear this to 0 */
+ encoder->private_->streaminfo.data.stream_info.total_samples = 0;
+
+ /*
+ * Check to see if the supplied metadata contains a VORBIS_COMMENT;
+ * if not, we will write an empty one (FLAC__add_metadata_block()
+ * automatically supplies the vendor string).
+ *
+ * WATCHOUT: the Ogg FLAC mapping requires us to write this block after
+ * the STREAMINFO. (In the case that metadata_has_vorbis_comment is
+ * true it will have already insured that the metadata list is properly
+ * ordered.)
+ */
+ if(!metadata_has_vorbis_comment) {
+ FLAC__StreamMetadata vorbis_comment;
+ vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT;
+ vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0);
+ vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */
+ vorbis_comment.data.vorbis_comment.vendor_string.length = 0;
+ vorbis_comment.data.vorbis_comment.vendor_string.entry = 0;
+ vorbis_comment.data.vorbis_comment.num_comments = 0;
+ vorbis_comment.data.vorbis_comment.comments = 0;
+ if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
+ /* the above function sets the state for us in case of an error */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ }
+
+ /*
+ * write the user's metadata blocks
+ */
+ for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) {
+ encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1);
+ if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) {
+ /* the above function sets the state for us in case of an error */
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+ }
+
+ /* now that all the metadata is written, we save the stream offset */
+ if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &encoder->protected_->audio_offset, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ if(encoder->protected_->verify)
+ encoder->private_->verify.state_hint = ENCODER_IN_AUDIO;
+
+ return FLAC__STREAM_ENCODER_INIT_STATUS_OK;
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream(
+ FLAC__StreamEncoder *encoder,
+ FLAC__StreamEncoderWriteCallback write_callback,
+ FLAC__StreamEncoderSeekCallback seek_callback,
+ FLAC__StreamEncoderTellCallback tell_callback,
+ FLAC__StreamEncoderMetadataCallback metadata_callback,
+ void *client_data
+)
+{
+ return init_stream_internal_(
+ encoder,
+ /*read_callback=*/0,
+ write_callback,
+ seek_callback,
+ tell_callback,
+ metadata_callback,
+ client_data,
+ /*is_ogg=*/false
+ );
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream(
+ FLAC__StreamEncoder *encoder,
+ FLAC__StreamEncoderReadCallback read_callback,
+ FLAC__StreamEncoderWriteCallback write_callback,
+ FLAC__StreamEncoderSeekCallback seek_callback,
+ FLAC__StreamEncoderTellCallback tell_callback,
+ FLAC__StreamEncoderMetadataCallback metadata_callback,
+ void *client_data
+)
+{
+ return init_stream_internal_(
+ encoder,
+ read_callback,
+ write_callback,
+ seek_callback,
+ tell_callback,
+ metadata_callback,
+ client_data,
+ /*is_ogg=*/true
+ );
+}
+
+static FLAC__StreamEncoderInitStatus init_FILE_internal_(
+ FLAC__StreamEncoder *encoder,
+ FILE *file,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data,
+ FLAC__bool is_ogg
+)
+{
+ FLAC__StreamEncoderInitStatus init_status;
+
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != file);
+
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+ /* double protection */
+ if(file == 0) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ /*
+ * 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 == stdout)
+ file = get_binary_stdout_(); /* just to be safe */
+
+ encoder->private_->file = file;
+
+ encoder->private_->progress_callback = progress_callback;
+ encoder->private_->bytes_written = 0;
+ encoder->private_->samples_written = 0;
+ encoder->private_->frames_written = 0;
+
+ init_status = init_stream_internal_(
+ encoder,
+ encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0,
+ file_write_callback_,
+ encoder->private_->file == stdout? 0 : file_seek_callback_,
+ encoder->private_->file == stdout? 0 : file_tell_callback_,
+ /*metadata_callback=*/0,
+ client_data,
+ is_ogg
+ );
+ if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
+ /* the above function sets the state for us in case of an error */
+ return init_status;
+ }
+
+ {
+ unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
+
+ FLAC__ASSERT(blocksize != 0);
+ encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize);
+ }
+
+ return init_status;
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE(
+ FLAC__StreamEncoder *encoder,
+ FILE *file,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data
+)
+{
+ return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false);
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE(
+ FLAC__StreamEncoder *encoder,
+ FILE *file,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data
+)
+{
+ return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true);
+}
+
+static FLAC__StreamEncoderInitStatus init_file_internal_(
+ FLAC__StreamEncoder *encoder,
+ const char *filename,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data,
+ FLAC__bool is_ogg
+)
+{
+ FILE *file;
+
+ FLAC__ASSERT(0 != encoder);
+
+ /*
+ * 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_encoder_init_FILE() before the FILE* is assigned.
+ */
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED;
+
+ file = filename? fopen(filename, "w+b") : stdout;
+
+ if(file == 0) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR;
+ return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR;
+ }
+
+ return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg);
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file(
+ FLAC__StreamEncoder *encoder,
+ const char *filename,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data
+)
+{
+ return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false);
+}
+
+FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file(
+ FLAC__StreamEncoder *encoder,
+ const char *filename,
+ FLAC__StreamEncoderProgressCallback progress_callback,
+ void *client_data
+)
+{
+ return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true);
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder)
+{
+ FLAC__bool error = false;
+
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+
+ if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return true;
+
+ if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) {
+ if(encoder->private_->current_sample_number != 0) {
+ const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number;
+ encoder->protected_->blocksize = encoder->private_->current_sample_number;
+ if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true))
+ error = true;
+ }
+ }
+
+ if(encoder->protected_->do_md5)
+ FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context);
+
+ if(!encoder->private_->is_being_deleted) {
+ if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) {
+ if(encoder->private_->seek_callback) {
+#if FLAC__HAS_OGG
+ if(encoder->private_->is_ogg)
+ update_ogg_metadata_(encoder);
+ else
+#endif
+ update_metadata_(encoder);
+
+ /* check if an error occurred while updating metadata */
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK)
+ error = true;
+ }
+ if(encoder->private_->metadata_callback)
+ encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data);
+ }
+
+ if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) {
+ if(!error)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
+ error = true;
+ }
+ }
+
+ if(0 != encoder->private_->file) {
+ if(encoder->private_->file != stdout)
+ fclose(encoder->private_->file);
+ encoder->private_->file = 0;
+ }
+
+#if FLAC__HAS_OGG
+ if(encoder->private_->is_ogg)
+ FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect);
+#endif
+
+ free_(encoder);
+ set_defaults_(encoder);
+
+ if(!error)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED;
+
+ return !error;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+#if FLAC__HAS_OGG
+ /* can't check encoder->private_->is_ogg since that's not set until init time */
+ FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value);
+ return true;
+#else
+ (void)value;
+ return false;
+#endif
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+#ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
+ encoder->protected_->verify = value;
+#endif
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->streamable_subset = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->do_md5 = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->channels = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->bits_per_sample = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->sample_rate = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__bool ok = true;
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0]))
+ value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1;
+ ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo);
+ ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo);
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#if 0
+ /* was: */
+ ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization);
+ /* but it's too hard to specify the string in a locale-specific way */
+#else
+ encoder->protected_->num_apodizations = 1;
+ encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
+ encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
+#endif
+#endif
+ ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order);
+ ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision);
+ ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search);
+ ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding);
+ ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search);
+ ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order);
+ ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order);
+ ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist);
+ return ok;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->blocksize = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->do_mid_side_stereo = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->loose_mid_side_stereo = value;
+ return true;
+}
+
+/*@@@@add to tests*/
+FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ FLAC__ASSERT(0 != specification);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+#ifdef FLAC__INTEGER_ONLY_LIBRARY
+ (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */
+#else
+ encoder->protected_->num_apodizations = 0;
+ while(1) {
+ const char *s = strchr(specification, ';');
+ const size_t n = s? (size_t)(s - specification) : strlen(specification);
+ if (n==8 && 0 == strncmp("bartlett" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT;
+ else if(n==13 && 0 == strncmp("bartlett_hann", specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN;
+ else if(n==8 && 0 == strncmp("blackman" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN;
+ else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE;
+ else if(n==6 && 0 == strncmp("connes" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES;
+ else if(n==7 && 0 == strncmp("flattop" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP;
+ else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) {
+ FLAC__real stddev = (FLAC__real)strtod(specification+6, 0);
+ if (stddev > 0.0 && stddev <= 0.5) {
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev;
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS;
+ }
+ }
+ else if(n==7 && 0 == strncmp("hamming" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING;
+ else if(n==4 && 0 == strncmp("hann" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN;
+ else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL;
+ else if(n==7 && 0 == strncmp("nuttall" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL;
+ else if(n==9 && 0 == strncmp("rectangle" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE;
+ else if(n==8 && 0 == strncmp("triangle" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE;
+ else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) {
+ FLAC__real p = (FLAC__real)strtod(specification+6, 0);
+ if (p >= 0.0 && p <= 1.0) {
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p;
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY;
+ }
+ }
+ else if(n==5 && 0 == strncmp("welch" , specification, n))
+ encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH;
+ if (encoder->protected_->num_apodizations == 32)
+ break;
+ if (s)
+ specification = s+1;
+ else
+ break;
+ }
+ if(encoder->protected_->num_apodizations == 0) {
+ encoder->protected_->num_apodizations = 1;
+ encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
+ encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
+ }
+#endif
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->max_lpc_order = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->qlp_coeff_precision = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->do_qlp_coeff_prec_search = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+#if 0
+ /*@@@ deprecated: */
+ encoder->protected_->do_escape_coding = value;
+#else
+ (void)value;
+#endif
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->do_exhaustive_model_search = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->min_residual_partition_order = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->max_residual_partition_order = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+#if 0
+ /*@@@ deprecated: */
+ encoder->protected_->rice_parameter_search_dist = value;
+#else
+ (void)value;
+#endif
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->protected_->total_samples_estimate = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ if(0 == metadata)
+ num_blocks = 0;
+ if(0 == num_blocks)
+ metadata = 0;
+ /* realloc() does not do exactly what we want so... */
+ if(encoder->protected_->metadata) {
+ free(encoder->protected_->metadata);
+ encoder->protected_->metadata = 0;
+ encoder->protected_->num_metadata_blocks = 0;
+ }
+ if(num_blocks) {
+ FLAC__StreamMetadata **m;
+ if(0 == (m = (FLAC__StreamMetadata**)safe_malloc_mul_2op_(sizeof(m[0]), /*times*/num_blocks)))
+ return false;
+ memcpy(m, metadata, sizeof(m[0]) * num_blocks);
+ encoder->protected_->metadata = m;
+ encoder->protected_->num_metadata_blocks = num_blocks;
+ }
+#if FLAC__HAS_OGG
+ if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks))
+ return false;
+#endif
+ return true;
+}
+
+/*
+ * These three functions are not static, but not publically exposed in
+ * include/FLAC/ either. They are used by the test suite.
+ */
+FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->private_->disable_constant_subframes = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->private_->disable_fixed_subframes = value;
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED)
+ return false;
+ encoder->private_->disable_verbatim_subframes = value;
+ return true;
+}
+
+FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->state;
+}
+
+FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->verify)
+ return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder);
+ else
+ return FLAC__STREAM_DECODER_UNINITIALIZED;
+}
+
+FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR)
+ return FLAC__StreamEncoderStateString[encoder->protected_->state];
+ else
+ return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder);
+}
+
+FLAC_API void FLAC__stream_encoder_get_verify_decoder_error_stats(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ if(0 != absolute_sample)
+ *absolute_sample = encoder->private_->verify.error_stats.absolute_sample;
+ if(0 != frame_number)
+ *frame_number = encoder->private_->verify.error_stats.frame_number;
+ if(0 != channel)
+ *channel = encoder->private_->verify.error_stats.channel;
+ if(0 != sample)
+ *sample = encoder->private_->verify.error_stats.sample;
+ if(0 != expected)
+ *expected = encoder->private_->verify.error_stats.expected;
+ if(0 != got)
+ *got = encoder->private_->verify.error_stats.got;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->verify;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->streamable_subset;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->do_md5;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->channels;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->bits_per_sample;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->sample_rate;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->blocksize;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->do_mid_side_stereo;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->loose_mid_side_stereo;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->max_lpc_order;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->qlp_coeff_precision;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->do_qlp_coeff_prec_search;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->do_escape_coding;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->do_exhaustive_model_search;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->min_residual_partition_order;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->max_residual_partition_order;
+}
+
+FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->rice_parameter_search_dist;
+}
+
+FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ return encoder->protected_->total_samples_estimate;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples)
+{
+ unsigned i, j = 0, channel;
+ const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
+
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
+
+ do {
+ const unsigned n = min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j);
+
+ if(encoder->protected_->verify)
+ append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n);
+
+ for(channel = 0; channel < channels; channel++)
+ memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n);
+
+ if(encoder->protected_->do_mid_side_stereo) {
+ FLAC__ASSERT(channels == 2);
+ /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
+ for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
+ encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j];
+ encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */
+ }
+ }
+ else
+ j += n;
+
+ encoder->private_->current_sample_number += n;
+
+ /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
+ if(encoder->private_->current_sample_number > blocksize) {
+ FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_);
+ FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
+ if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
+ return false;
+ /* move unprocessed overread samples to beginnings of arrays */
+ for(channel = 0; channel < channels; channel++)
+ encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
+ if(encoder->protected_->do_mid_side_stereo) {
+ encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
+ encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
+ }
+ encoder->private_->current_sample_number = 1;
+ }
+ } while(j < samples);
+
+ return true;
+}
+
+FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples)
+{
+ unsigned i, j, k, channel;
+ FLAC__int32 x, mid, side;
+ const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize;
+
+ FLAC__ASSERT(0 != encoder);
+ FLAC__ASSERT(0 != encoder->private_);
+ FLAC__ASSERT(0 != encoder->protected_);
+ FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
+
+ j = k = 0;
+ /*
+ * we have several flavors of the same basic loop, optimized for
+ * different conditions:
+ */
+ if(encoder->protected_->do_mid_side_stereo && channels == 2) {
+ /*
+ * stereo coding: unroll channel loop
+ */
+ do {
+ if(encoder->protected_->verify)
+ append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
+
+ /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
+ for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
+ encoder->private_->integer_signal[0][i] = mid = side = buffer[k++];
+ x = buffer[k++];
+ encoder->private_->integer_signal[1][i] = x;
+ mid += x;
+ side -= x;
+ mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */
+ encoder->private_->integer_signal_mid_side[1][i] = side;
+ encoder->private_->integer_signal_mid_side[0][i] = mid;
+ }
+ encoder->private_->current_sample_number = i;
+ /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
+ if(i > blocksize) {
+ if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
+ return false;
+ /* move unprocessed overread samples to beginnings of arrays */
+ FLAC__ASSERT(i == blocksize+OVERREAD_);
+ FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
+ encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize];
+ encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize];
+ encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize];
+ encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize];
+ encoder->private_->current_sample_number = 1;
+ }
+ } while(j < samples);
+ }
+ else {
+ /*
+ * independent channel coding: buffer each channel in inner loop
+ */
+ do {
+ if(encoder->protected_->verify)
+ append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j));
+
+ /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */
+ for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) {
+ for(channel = 0; channel < channels; channel++)
+ encoder->private_->integer_signal[channel][i] = buffer[k++];
+ }
+ encoder->private_->current_sample_number = i;
+ /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */
+ if(i > blocksize) {
+ if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false))
+ return false;
+ /* move unprocessed overread samples to beginnings of arrays */
+ FLAC__ASSERT(i == blocksize+OVERREAD_);
+ FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */
+ for(channel = 0; channel < channels; channel++)
+ encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize];
+ encoder->private_->current_sample_number = 1;
+ }
+ } while(j < samples);
+ }
+
+ return true;
+}
+
+/***********************************************************************
+ *
+ * Private class methods
+ *
+ ***********************************************************************/
+
+void set_defaults_(FLAC__StreamEncoder *encoder)
+{
+ FLAC__ASSERT(0 != encoder);
+
+#ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING
+ encoder->protected_->verify = true;
+#else
+ encoder->protected_->verify = false;
+#endif
+ encoder->protected_->streamable_subset = true;
+ encoder->protected_->do_md5 = true;
+ encoder->protected_->do_mid_side_stereo = false;
+ encoder->protected_->loose_mid_side_stereo = false;
+ encoder->protected_->channels = 2;
+ encoder->protected_->bits_per_sample = 16;
+ encoder->protected_->sample_rate = 44100;
+ encoder->protected_->blocksize = 0;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ encoder->protected_->num_apodizations = 1;
+ encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY;
+ encoder->protected_->apodizations[0].parameters.tukey.p = 0.5;
+#endif
+ encoder->protected_->max_lpc_order = 0;
+ encoder->protected_->qlp_coeff_precision = 0;
+ encoder->protected_->do_qlp_coeff_prec_search = false;
+ encoder->protected_->do_exhaustive_model_search = false;
+ encoder->protected_->do_escape_coding = false;
+ encoder->protected_->min_residual_partition_order = 0;
+ encoder->protected_->max_residual_partition_order = 0;
+ encoder->protected_->rice_parameter_search_dist = 0;
+ encoder->protected_->total_samples_estimate = 0;
+ encoder->protected_->metadata = 0;
+ encoder->protected_->num_metadata_blocks = 0;
+
+ encoder->private_->seek_table = 0;
+ encoder->private_->disable_constant_subframes = false;
+ encoder->private_->disable_fixed_subframes = false;
+ encoder->private_->disable_verbatim_subframes = false;
+#if FLAC__HAS_OGG
+ encoder->private_->is_ogg = false;
+#endif
+ encoder->private_->read_callback = 0;
+ encoder->private_->write_callback = 0;
+ encoder->private_->seek_callback = 0;
+ encoder->private_->tell_callback = 0;
+ encoder->private_->metadata_callback = 0;
+ encoder->private_->progress_callback = 0;
+ encoder->private_->client_data = 0;
+
+#if FLAC__HAS_OGG
+ FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect);
+#endif
+}
+
+void free_(FLAC__StreamEncoder *encoder)
+{
+ unsigned i, channel;
+
+ FLAC__ASSERT(0 != encoder);
+ if(encoder->protected_->metadata) {
+ free(encoder->protected_->metadata);
+ encoder->protected_->metadata = 0;
+ encoder->protected_->num_metadata_blocks = 0;
+ }
+ for(i = 0; i < encoder->protected_->channels; i++) {
+ if(0 != encoder->private_->integer_signal_unaligned[i]) {
+ free(encoder->private_->integer_signal_unaligned[i]);
+ encoder->private_->integer_signal_unaligned[i] = 0;
+ }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ if(0 != encoder->private_->real_signal_unaligned[i]) {
+ free(encoder->private_->real_signal_unaligned[i]);
+ encoder->private_->real_signal_unaligned[i] = 0;
+ }
+#endif
+ }
+ for(i = 0; i < 2; i++) {
+ if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) {
+ free(encoder->private_->integer_signal_mid_side_unaligned[i]);
+ encoder->private_->integer_signal_mid_side_unaligned[i] = 0;
+ }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) {
+ free(encoder->private_->real_signal_mid_side_unaligned[i]);
+ encoder->private_->real_signal_mid_side_unaligned[i] = 0;
+ }
+#endif
+ }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ for(i = 0; i < encoder->protected_->num_apodizations; i++) {
+ if(0 != encoder->private_->window_unaligned[i]) {
+ free(encoder->private_->window_unaligned[i]);
+ encoder->private_->window_unaligned[i] = 0;
+ }
+ }
+ if(0 != encoder->private_->windowed_signal_unaligned) {
+ free(encoder->private_->windowed_signal_unaligned);
+ encoder->private_->windowed_signal_unaligned = 0;
+ }
+#endif
+ for(channel = 0; channel < encoder->protected_->channels; channel++) {
+ for(i = 0; i < 2; i++) {
+ if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) {
+ free(encoder->private_->residual_workspace_unaligned[channel][i]);
+ encoder->private_->residual_workspace_unaligned[channel][i] = 0;
+ }
+ }
+ }
+ for(channel = 0; channel < 2; channel++) {
+ for(i = 0; i < 2; i++) {
+ if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) {
+ free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]);
+ encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0;
+ }
+ }
+ }
+ if(0 != encoder->private_->abs_residual_partition_sums_unaligned) {
+ free(encoder->private_->abs_residual_partition_sums_unaligned);
+ encoder->private_->abs_residual_partition_sums_unaligned = 0;
+ }
+ if(0 != encoder->private_->raw_bits_per_partition_unaligned) {
+ free(encoder->private_->raw_bits_per_partition_unaligned);
+ encoder->private_->raw_bits_per_partition_unaligned = 0;
+ }
+ if(encoder->protected_->verify) {
+ for(i = 0; i < encoder->protected_->channels; i++) {
+ if(0 != encoder->private_->verify.input_fifo.data[i]) {
+ free(encoder->private_->verify.input_fifo.data[i]);
+ encoder->private_->verify.input_fifo.data[i] = 0;
+ }
+ }
+ }
+ FLAC__bitwriter_free(encoder->private_->frame);
+}
+
+FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize)
+{
+ FLAC__bool ok;
+ unsigned i, channel;
+
+ FLAC__ASSERT(new_blocksize > 0);
+ FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
+ FLAC__ASSERT(encoder->private_->current_sample_number == 0);
+
+ /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */
+ if(new_blocksize <= encoder->private_->input_capacity)
+ return true;
+
+ ok = true;
+
+ /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx()
+ * requires that the input arrays (in our case the integer signals)
+ * have a buffer of up to 3 zeroes in front (at negative indices) for
+ * alignment purposes; we use 4 in front to keep the data well-aligned.
+ */
+
+ for(i = 0; ok && i < encoder->protected_->channels; i++) {
+ ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]);
+ memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4);
+ encoder->private_->integer_signal[i] += 4;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#if 0 /* @@@ currently unused */
+ if(encoder->protected_->max_lpc_order > 0)
+ ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]);
+#endif
+#endif
+ }
+ for(i = 0; ok && i < 2; i++) {
+ ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]);
+ memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4);
+ encoder->private_->integer_signal_mid_side[i] += 4;
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+#if 0 /* @@@ currently unused */
+ if(encoder->protected_->max_lpc_order > 0)
+ ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]);
+#endif
+#endif
+ }
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ if(ok && encoder->protected_->max_lpc_order > 0) {
+ for(i = 0; ok && i < encoder->protected_->num_apodizations; i++)
+ ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]);
+ ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal);
+ }
+#endif
+ for(channel = 0; ok && channel < encoder->protected_->channels; channel++) {
+ for(i = 0; ok && i < 2; i++) {
+ ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]);
+ }
+ }
+ for(channel = 0; ok && channel < 2; channel++) {
+ for(i = 0; ok && i < 2; i++) {
+ ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]);
+ }
+ }
+ /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */
+ /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */
+ ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums);
+ if(encoder->protected_->do_escape_coding)
+ ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition);
+
+ /* now adjust the windows if the blocksize has changed */
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) {
+ for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) {
+ switch(encoder->protected_->apodizations[i].type) {
+ case FLAC__APODIZATION_BARTLETT:
+ FLAC__window_bartlett(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_BARTLETT_HANN:
+ FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_BLACKMAN:
+ FLAC__window_blackman(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE:
+ FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_CONNES:
+ FLAC__window_connes(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_FLATTOP:
+ FLAC__window_flattop(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_GAUSS:
+ FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev);
+ break;
+ case FLAC__APODIZATION_HAMMING:
+ FLAC__window_hamming(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_HANN:
+ FLAC__window_hann(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_KAISER_BESSEL:
+ FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_NUTTALL:
+ FLAC__window_nuttall(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_RECTANGLE:
+ FLAC__window_rectangle(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_TRIANGLE:
+ FLAC__window_triangle(encoder->private_->window[i], new_blocksize);
+ break;
+ case FLAC__APODIZATION_TUKEY:
+ FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p);
+ break;
+ case FLAC__APODIZATION_WELCH:
+ FLAC__window_welch(encoder->private_->window[i], new_blocksize);
+ break;
+ default:
+ FLAC__ASSERT(0);
+ /* double protection */
+ FLAC__window_hann(encoder->private_->window[i], new_blocksize);
+ break;
+ }
+ }
+ }
+#endif
+
+ if(ok)
+ encoder->private_->input_capacity = new_blocksize;
+ else
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+
+ return ok;
+}
+
+FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block)
+{
+ const FLAC__byte *buffer;
+ size_t bytes;
+
+ FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
+
+ if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return false;
+ }
+
+ if(encoder->protected_->verify) {
+ encoder->private_->verify.output.data = buffer;
+ encoder->private_->verify.output.bytes = bytes;
+ if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) {
+ encoder->private_->verify.needs_magic_hack = true;
+ }
+ else {
+ if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) {
+ FLAC__bitwriter_release_buffer(encoder->private_->frame);
+ FLAC__bitwriter_clear(encoder->private_->frame);
+ if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
+ return false;
+ }
+ }
+ }
+
+ if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ FLAC__bitwriter_release_buffer(encoder->private_->frame);
+ FLAC__bitwriter_clear(encoder->private_->frame);
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return false;
+ }
+
+ FLAC__bitwriter_release_buffer(encoder->private_->frame);
+ FLAC__bitwriter_clear(encoder->private_->frame);
+
+ if(samples > 0) {
+ encoder->private_->streaminfo.data.stream_info.min_framesize = min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize);
+ encoder->private_->streaminfo.data.stream_info.max_framesize = max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize);
+ }
+
+ return true;
+}
+
+FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block)
+{
+ FLAC__StreamEncoderWriteStatus status;
+ FLAC__uint64 output_position = 0;
+
+ /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */
+ if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
+ }
+
+ /*
+ * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets.
+ */
+ if(samples == 0) {
+ FLAC__MetadataType type = (buffer[0] & 0x7f);
+ if(type == FLAC__METADATA_TYPE_STREAMINFO)
+ encoder->protected_->streaminfo_offset = output_position;
+ else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0)
+ encoder->protected_->seektable_offset = output_position;
+ }
+
+ /*
+ * Mark the current seek point if hit (if audio_offset == 0 that
+ * means we're still writing metadata and haven't hit the first
+ * frame yet)
+ */
+ if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) {
+ const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder);
+ const FLAC__uint64 frame_first_sample = encoder->private_->samples_written;
+ const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1;
+ FLAC__uint64 test_sample;
+ unsigned i;
+ for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) {
+ test_sample = encoder->private_->seek_table->points[i].sample_number;
+ if(test_sample > frame_last_sample) {
+ break;
+ }
+ else if(test_sample >= frame_first_sample) {
+ encoder->private_->seek_table->points[i].sample_number = frame_first_sample;
+ encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset;
+ encoder->private_->seek_table->points[i].frame_samples = blocksize;
+ encoder->private_->first_seekpoint_to_check++;
+ /* DO NOT: "break;" and here's why:
+ * The seektable template may contain more than one target
+ * sample for any given frame; we will keep looping, generating
+ * duplicate seekpoints for them, and we'll clean it up later,
+ * just before writing the seektable back to the metadata.
+ */
+ }
+ else {
+ encoder->private_->first_seekpoint_to_check++;
+ }
+ }
+ }
+
+#if FLAC__HAS_OGG
+ if(encoder->private_->is_ogg) {
+ status = FLAC__ogg_encoder_aspect_write_callback_wrapper(
+ &encoder->protected_->ogg_encoder_aspect,
+ buffer,
+ bytes,
+ samples,
+ encoder->private_->current_frame_number,
+ is_last_block,
+ (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback,
+ encoder,
+ encoder->private_->client_data
+ );
+ }
+ else
+#endif
+ status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data);
+
+ if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ encoder->private_->bytes_written += bytes;
+ encoder->private_->samples_written += samples;
+ /* we keep a high watermark on the number of frames written because
+ * when the encoder goes back to write metadata, 'current_frame'
+ * will drop back to 0.
+ */
+ encoder->private_->frames_written = max(encoder->private_->frames_written, encoder->private_->current_frame_number+1);
+ }
+ else
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+
+ return status;
+}
+
+/* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
+void update_metadata_(const FLAC__StreamEncoder *encoder)
+{
+ FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
+ const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
+ const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
+ const unsigned min_framesize = metadata->data.stream_info.min_framesize;
+ const unsigned max_framesize = metadata->data.stream_info.max_framesize;
+ const unsigned bps = metadata->data.stream_info.bits_per_sample;
+ FLAC__StreamEncoderSeekStatus seek_status;
+
+ FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
+
+ /* All this is based on intimate knowledge of the stream header
+ * layout, but a change to the header format that would break this
+ * would also break all streams encoded in the previous format.
+ */
+
+ /*
+ * Write MD5 signature
+ */
+ {
+ const unsigned md5_offset =
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
+ ) / 8;
+
+ if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
+ if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ }
+
+ /*
+ * Write total samples
+ */
+ {
+ const unsigned total_samples_byte_offset =
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
+ - 4
+ ) / 8;
+
+ b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F);
+ b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
+ b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
+ b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
+ b[4] = (FLAC__byte)(samples & 0xFF);
+ if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + total_samples_byte_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
+ if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ }
+
+ /*
+ * Write min/max framesize
+ */
+ {
+ const unsigned min_framesize_offset =
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
+ ) / 8;
+
+ b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
+ b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
+ b[2] = (FLAC__byte)(min_framesize & 0xFF);
+ b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
+ b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
+ b[5] = (FLAC__byte)(max_framesize & 0xFF);
+ if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + min_framesize_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
+ if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ }
+
+ /*
+ * Write seektable
+ */
+ if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
+ unsigned i;
+
+ FLAC__format_seektable_sort(encoder->private_->seek_table);
+
+ FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
+
+ if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->seektable_offset + FLAC__STREAM_METADATA_HEADER_LENGTH, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) {
+ if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR)
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+
+ for(i = 0; i < encoder->private_->seek_table->num_points; i++) {
+ FLAC__uint64 xx;
+ unsigned x;
+ xx = encoder->private_->seek_table->points[i].sample_number;
+ b[7] = (FLAC__byte)xx; xx >>= 8;
+ b[6] = (FLAC__byte)xx; xx >>= 8;
+ b[5] = (FLAC__byte)xx; xx >>= 8;
+ b[4] = (FLAC__byte)xx; xx >>= 8;
+ b[3] = (FLAC__byte)xx; xx >>= 8;
+ b[2] = (FLAC__byte)xx; xx >>= 8;
+ b[1] = (FLAC__byte)xx; xx >>= 8;
+ b[0] = (FLAC__byte)xx; xx >>= 8;
+ xx = encoder->private_->seek_table->points[i].stream_offset;
+ b[15] = (FLAC__byte)xx; xx >>= 8;
+ b[14] = (FLAC__byte)xx; xx >>= 8;
+ b[13] = (FLAC__byte)xx; xx >>= 8;
+ b[12] = (FLAC__byte)xx; xx >>= 8;
+ b[11] = (FLAC__byte)xx; xx >>= 8;
+ b[10] = (FLAC__byte)xx; xx >>= 8;
+ b[9] = (FLAC__byte)xx; xx >>= 8;
+ b[8] = (FLAC__byte)xx; xx >>= 8;
+ x = encoder->private_->seek_table->points[i].frame_samples;
+ b[17] = (FLAC__byte)x; x >>= 8;
+ b[16] = (FLAC__byte)x; x >>= 8;
+ if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR;
+ return;
+ }
+ }
+ }
+}
+
+#if FLAC__HAS_OGG
+/* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */
+void update_ogg_metadata_(FLAC__StreamEncoder *encoder)
+{
+ /* the # of bytes in the 1st packet that precede the STREAMINFO */
+ static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH =
+ FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH +
+ FLAC__OGG_MAPPING_MAGIC_LENGTH +
+ FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH +
+ FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH +
+ FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH +
+ FLAC__STREAM_SYNC_LENGTH
+ ;
+ FLAC__byte b[max(6, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)];
+ const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo;
+ const FLAC__uint64 samples = metadata->data.stream_info.total_samples;
+ const unsigned min_framesize = metadata->data.stream_info.min_framesize;
+ const unsigned max_framesize = metadata->data.stream_info.max_framesize;
+ ogg_page page;
+
+ FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO);
+ FLAC__ASSERT(0 != encoder->private_->seek_callback);
+
+ /* Pre-check that client supports seeking, since we don't want the
+ * ogg_helper code to ever have to deal with this condition.
+ */
+ if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED)
+ return;
+
+ /* All this is based on intimate knowledge of the stream header
+ * layout, but a change to the header format that would break this
+ * would also break all streams encoded in the previous format.
+ */
+
+ /**
+ ** Write STREAMINFO stats
+ **/
+ simple_ogg_page__init(&page);
+ if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
+ simple_ogg_page__clear(&page);
+ return; /* state already set */
+ }
+
+ /*
+ * Write MD5 signature
+ */
+ {
+ const unsigned md5_offset =
+ FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN
+ ) / 8;
+
+ if(md5_offset + 16 > (unsigned)page.body_len) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
+ simple_ogg_page__clear(&page);
+ return;
+ }
+ memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16);
+ }
+
+ /*
+ * Write total samples
+ */
+ {
+ const unsigned total_samples_byte_offset =
+ FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN
+ - 4
+ ) / 8;
+
+ if(total_samples_byte_offset + 5 > (unsigned)page.body_len) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
+ simple_ogg_page__clear(&page);
+ return;
+ }
+ b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0;
+ b[0] |= (FLAC__byte)((samples >> 32) & 0x0F);
+ b[1] = (FLAC__byte)((samples >> 24) & 0xFF);
+ b[2] = (FLAC__byte)((samples >> 16) & 0xFF);
+ b[3] = (FLAC__byte)((samples >> 8) & 0xFF);
+ b[4] = (FLAC__byte)(samples & 0xFF);
+ memcpy(page.body + total_samples_byte_offset, b, 5);
+ }
+
+ /*
+ * Write min/max framesize
+ */
+ {
+ const unsigned min_framesize_offset =
+ FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH +
+ FLAC__STREAM_METADATA_HEADER_LENGTH +
+ (
+ FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN +
+ FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN
+ ) / 8;
+
+ if(min_framesize_offset + 6 > (unsigned)page.body_len) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
+ simple_ogg_page__clear(&page);
+ return;
+ }
+ b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF);
+ b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF);
+ b[2] = (FLAC__byte)(min_framesize & 0xFF);
+ b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF);
+ b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF);
+ b[5] = (FLAC__byte)(max_framesize & 0xFF);
+ memcpy(page.body + min_framesize_offset, b, 6);
+ }
+ if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
+ simple_ogg_page__clear(&page);
+ return; /* state already set */
+ }
+ simple_ogg_page__clear(&page);
+
+ /*
+ * Write seektable
+ */
+ if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) {
+ unsigned i;
+ FLAC__byte *p;
+
+ FLAC__format_seektable_sort(encoder->private_->seek_table);
+
+ FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table));
+
+ simple_ogg_page__init(&page);
+ if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) {
+ simple_ogg_page__clear(&page);
+ return; /* state already set */
+ }
+
+ if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR;
+ simple_ogg_page__clear(&page);
+ return;
+ }
+
+ for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) {
+ FLAC__uint64 xx;
+ unsigned x;
+ xx = encoder->private_->seek_table->points[i].sample_number;
+ b[7] = (FLAC__byte)xx; xx >>= 8;
+ b[6] = (FLAC__byte)xx; xx >>= 8;
+ b[5] = (FLAC__byte)xx; xx >>= 8;
+ b[4] = (FLAC__byte)xx; xx >>= 8;
+ b[3] = (FLAC__byte)xx; xx >>= 8;
+ b[2] = (FLAC__byte)xx; xx >>= 8;
+ b[1] = (FLAC__byte)xx; xx >>= 8;
+ b[0] = (FLAC__byte)xx; xx >>= 8;
+ xx = encoder->private_->seek_table->points[i].stream_offset;
+ b[15] = (FLAC__byte)xx; xx >>= 8;
+ b[14] = (FLAC__byte)xx; xx >>= 8;
+ b[13] = (FLAC__byte)xx; xx >>= 8;
+ b[12] = (FLAC__byte)xx; xx >>= 8;
+ b[11] = (FLAC__byte)xx; xx >>= 8;
+ b[10] = (FLAC__byte)xx; xx >>= 8;
+ b[9] = (FLAC__byte)xx; xx >>= 8;
+ b[8] = (FLAC__byte)xx; xx >>= 8;
+ x = encoder->private_->seek_table->points[i].frame_samples;
+ b[17] = (FLAC__byte)x; x >>= 8;
+ b[16] = (FLAC__byte)x; x >>= 8;
+ memcpy(p, b, 18);
+ }
+
+ if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) {
+ simple_ogg_page__clear(&page);
+ return; /* state already set */
+ }
+ simple_ogg_page__clear(&page);
+ }
+}
+#endif
+
+FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block)
+{
+ FLAC__uint16 crc;
+ FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK);
+
+ /*
+ * Accumulate raw signal to the MD5 signature
+ */
+ if(encoder->protected_->do_md5 && !FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return false;
+ }
+
+ /*
+ * Process the frame header and subframes into the frame bitbuffer
+ */
+ if(!process_subframes_(encoder, is_fractional_block)) {
+ /* the above function sets the state for us in case of an error */
+ return false;
+ }
+
+ /*
+ * Zero-pad the frame to a byte_boundary
+ */
+ if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return false;
+ }
+
+ /*
+ * CRC-16 the whole thing
+ */
+ FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame));
+ if(
+ !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) ||
+ !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN)
+ ) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR;
+ return false;
+ }
+
+ /*
+ * Write it
+ */
+ if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) {
+ /* the above function sets the state for us in case of an error */
+ return false;
+ }
+
+ /*
+ * Get ready for the next frame
+ */
+ encoder->private_->current_sample_number = 0;
+ encoder->private_->current_frame_number++;
+ encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize;
+
+ return true;
+}
+
+FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block)
+{
+ FLAC__FrameHeader frame_header;
+ unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order;
+ FLAC__bool do_independent, do_mid_side;
+
+ /*
+ * Calculate the min,max Rice partition orders
+ */
+ if(is_fractional_block) {
+ max_partition_order = 0;
+ }
+ else {
+ max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize);
+ max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order);
+ }
+ min_partition_order = min(min_partition_order, max_partition_order);
+
+ /*
+ * Setup the frame
+ */
+ frame_header.blocksize = encoder->protected_->blocksize;
+ frame_header.sample_rate = encoder->protected_->sample_rate;
+ frame_header.channels = encoder->protected_->channels;
+ frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */
+ frame_header.bits_per_sample = encoder->protected_->bits_per_sample;
+ frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER;
+ frame_header.number.frame_number = encoder->private_->current_frame_number;
+
+ /*
+ * Figure out what channel assignments to try
+ */
+ if(encoder->protected_->do_mid_side_stereo) {
+ if(encoder->protected_->loose_mid_side_stereo) {
+ if(encoder->private_->loose_mid_side_stereo_frame_count == 0) {
+ do_independent = true;
+ do_mid_side = true;
+ }
+ else {
+ do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT);
+ do_mid_side = !do_independent;
+ }
+ }
+ else {
+ do_independent = true;
+ do_mid_side = true;
+ }
+ }
+ else {
+ do_independent = true;
+ do_mid_side = false;
+ }
+
+ FLAC__ASSERT(do_independent || do_mid_side);
+
+ /*
+ * Check for wasted bits; set effective bps for each subframe
+ */
+ if(do_independent) {
+ for(channel = 0; channel < encoder->protected_->channels; channel++) {
+ const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize);
+ encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w;
+ encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w;
+ }
+ }
+ if(do_mid_side) {
+ FLAC__ASSERT(encoder->protected_->channels == 2);
+ for(channel = 0; channel < 2; channel++) {
+ const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize);
+ encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w;
+ encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1);
+ }
+ }
+
+ /*
+ * First do a normal encoding pass of each independent channel
+ */
+ if(do_independent) {
+ for(channel = 0; channel < encoder->protected_->channels; channel++) {
+ if(!
+ process_subframe_(
+ encoder,
+ min_partition_order,
+ max_partition_order,
+ &frame_header,
+ encoder->private_->subframe_bps[channel],
+ encoder->private_->integer_signal[channel],
+ encoder->private_->subframe_workspace_ptr[channel],
+ encoder->private_->partitioned_rice_contents_workspace_ptr[channel],
+ encoder->private_->residual_workspace[channel],
+ encoder->private_->best_subframe+channel,
+ encoder->private_->best_subframe_bits+channel
+ )
+ )
+ return false;
+ }
+ }
+
+ /*
+ * Now do mid and side channels if requested
+ */
+ if(do_mid_side) {
+ FLAC__ASSERT(encoder->protected_->channels == 2);
+
+ for(channel = 0; channel < 2; channel++) {
+ if(!
+ process_subframe_(
+ encoder,
+ min_partition_order,
+ max_partition_order,
+ &frame_header,
+ encoder->private_->subframe_bps_mid_side[channel],
+ encoder->private_->integer_signal_mid_side[channel],
+ encoder->private_->subframe_workspace_ptr_mid_side[channel],
+ encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel],
+ encoder->private_->residual_workspace_mid_side[channel],
+ encoder->private_->best_subframe_mid_side+channel,
+ encoder->private_->best_subframe_bits_mid_side+channel
+ )
+ )
+ return false;
+ }
+ }
+
+ /*
+ * Compose the frame bitbuffer
+ */
+ if(do_mid_side) {
+ unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */
+ FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */
+ FLAC__ChannelAssignment channel_assignment;
+
+ FLAC__ASSERT(encoder->protected_->channels == 2);
+
+ if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) {
+ channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE);
+ }
+ else {
+ unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */
+ unsigned min_bits;
+ int ca;
+
+ FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0);
+ FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1);
+ FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2);
+ FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3);
+ FLAC__ASSERT(do_independent && do_mid_side);
+
+ /* We have to figure out which channel assignent results in the smallest frame */
+ bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1];
+ bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1];
+ bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1];
+ bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1];
+
+ channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT;
+ min_bits = bits[channel_assignment];
+ for(ca = 1; ca <= 3; ca++) {
+ if(bits[ca] < min_bits) {
+ min_bits = bits[ca];
+ channel_assignment = (FLAC__ChannelAssignment)ca;
+ }
+ }
+ }
+
+ frame_header.channel_assignment = channel_assignment;
+
+ if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+
+ switch(channel_assignment) {
+ case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
+ left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
+ right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
+ left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]];
+ right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
+ left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
+ right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
+ left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]];
+ right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]];
+ break;
+ default:
+ FLAC__ASSERT(0);
+ }
+
+ switch(channel_assignment) {
+ case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
+ left_bps = encoder->private_->subframe_bps [0];
+ right_bps = encoder->private_->subframe_bps [1];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
+ left_bps = encoder->private_->subframe_bps [0];
+ right_bps = encoder->private_->subframe_bps_mid_side[1];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
+ left_bps = encoder->private_->subframe_bps_mid_side[1];
+ right_bps = encoder->private_->subframe_bps [1];
+ break;
+ case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
+ left_bps = encoder->private_->subframe_bps_mid_side[0];
+ right_bps = encoder->private_->subframe_bps_mid_side[1];
+ break;
+ default:
+ FLAC__ASSERT(0);
+ }
+
+ /* note that encoder_add_subframe_ sets the state for us in case of an error */
+ if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame))
+ return false;
+ if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame))
+ return false;
+ }
+ else {
+ if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+
+ for(channel = 0; channel < encoder->protected_->channels; channel++) {
+ if(!add_subframe_(encoder, frame_header.blocksize, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) {
+ /* the above function sets the state for us in case of an error */
+ return false;
+ }
+ }
+ }
+
+ if(encoder->protected_->loose_mid_side_stereo) {
+ encoder->private_->loose_mid_side_stereo_frame_count++;
+ if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames)
+ encoder->private_->loose_mid_side_stereo_frame_count = 0;
+ }
+
+ encoder->private_->last_channel_assignment = frame_header.channel_assignment;
+
+ return true;
+}
+
+FLAC__bool process_subframe_(
+ FLAC__StreamEncoder *encoder,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ const FLAC__FrameHeader *frame_header,
+ unsigned subframe_bps,
+ const FLAC__int32 integer_signal[],
+ FLAC__Subframe *subframe[2],
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2],
+ FLAC__int32 *residual[2],
+ unsigned *best_subframe,
+ unsigned *best_bits
+)
+{
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
+#else
+ FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1];
+#endif
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ FLAC__double lpc_residual_bits_per_sample;
+ FLAC__real autoc[FLAC__MAX_LPC_ORDER+1]; /* WATCHOUT: the size is important even though encoder->protected_->max_lpc_order might be less; some asm routines need all the space */
+ FLAC__double lpc_error[FLAC__MAX_LPC_ORDER];
+ unsigned min_lpc_order, max_lpc_order, lpc_order;
+ unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision;
+#endif
+ unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order;
+ unsigned rice_parameter;
+ unsigned _candidate_bits, _best_bits;
+ unsigned _best_subframe;
+ /* only use RICE2 partitions if stream bps > 16 */
+ const unsigned rice_parameter_limit = FLAC__stream_encoder_get_bits_per_sample(encoder) > 16? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
+
+ FLAC__ASSERT(frame_header->blocksize > 0);
+
+ /* verbatim subframe is the baseline against which we measure other compressed subframes */
+ _best_subframe = 0;
+ if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER)
+ _best_bits = UINT_MAX;
+ else
+ _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
+
+ if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) {
+ unsigned signal_is_constant = false;
+ guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample);
+ /* check for constant subframe */
+ if(
+ !encoder->private_->disable_constant_subframes &&
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ fixed_residual_bits_per_sample[1] == 0.0
+#else
+ fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO
+#endif
+ ) {
+ /* the above means it's possible all samples are the same value; now double-check it: */
+ unsigned i;
+ signal_is_constant = true;
+ for(i = 1; i < frame_header->blocksize; i++) {
+ if(integer_signal[0] != integer_signal[i]) {
+ signal_is_constant = false;
+ break;
+ }
+ }
+ }
+ if(signal_is_constant) {
+ _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]);
+ if(_candidate_bits < _best_bits) {
+ _best_subframe = !_best_subframe;
+ _best_bits = _candidate_bits;
+ }
+ }
+ else {
+ if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) {
+ /* encode fixed */
+ if(encoder->protected_->do_exhaustive_model_search) {
+ min_fixed_order = 0;
+ max_fixed_order = FLAC__MAX_FIXED_ORDER;
+ }
+ else {
+ min_fixed_order = max_fixed_order = guess_fixed_order;
+ }
+ if(max_fixed_order >= frame_header->blocksize)
+ max_fixed_order = frame_header->blocksize - 1;
+ for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) {
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps)
+ continue; /* don't even try */
+ rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+0.5) : 0; /* 0.5 is for rounding */
+#else
+ if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps)
+ continue; /* don't even try */
+ rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > FLAC__FP_ZERO)? (unsigned)FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]+FLAC__FP_ONE_HALF) : 0; /* 0.5 is for rounding */
+#endif
+ rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
+ if(rice_parameter >= rice_parameter_limit) {
+#ifdef DEBUG_VERBOSE
+ fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1);
+#endif
+ rice_parameter = rice_parameter_limit - 1;
+ }
+ _candidate_bits =
+ evaluate_fixed_subframe_(
+ encoder,
+ integer_signal,
+ residual[!_best_subframe],
+ encoder->private_->abs_residual_partition_sums,
+ encoder->private_->raw_bits_per_partition,
+ frame_header->blocksize,
+ subframe_bps,
+ fixed_order,
+ rice_parameter,
+ rice_parameter_limit,
+ min_partition_order,
+ max_partition_order,
+ encoder->protected_->do_escape_coding,
+ encoder->protected_->rice_parameter_search_dist,
+ subframe[!_best_subframe],
+ partitioned_rice_contents[!_best_subframe]
+ );
+ if(_candidate_bits < _best_bits) {
+ _best_subframe = !_best_subframe;
+ _best_bits = _candidate_bits;
+ }
+ }
+ }
+
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+ /* encode lpc */
+ if(encoder->protected_->max_lpc_order > 0) {
+ if(encoder->protected_->max_lpc_order >= frame_header->blocksize)
+ max_lpc_order = frame_header->blocksize-1;
+ else
+ max_lpc_order = encoder->protected_->max_lpc_order;
+ if(max_lpc_order > 0) {
+ unsigned a;
+ for (a = 0; a < encoder->protected_->num_apodizations; a++) {
+ FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize);
+ encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc);
+ /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */
+ if(autoc[0] != 0.0) {
+ FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error);
+ if(encoder->protected_->do_exhaustive_model_search) {
+ min_lpc_order = 1;
+ }
+ else {
+ const unsigned guess_lpc_order =
+ FLAC__lpc_compute_best_order(
+ lpc_error,
+ max_lpc_order,
+ frame_header->blocksize,
+ subframe_bps + (
+ encoder->protected_->do_qlp_coeff_prec_search?
+ FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */
+ encoder->protected_->qlp_coeff_precision
+ )
+ );
+ min_lpc_order = max_lpc_order = guess_lpc_order;
+ }
+ if(max_lpc_order >= frame_header->blocksize)
+ max_lpc_order = frame_header->blocksize - 1;
+ for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) {
+ lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order);
+ if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps)
+ continue; /* don't even try */
+ rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */
+ rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */
+ if(rice_parameter >= rice_parameter_limit) {
+#ifdef DEBUG_VERBOSE
+ fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1);
+#endif
+ rice_parameter = rice_parameter_limit - 1;
+ }
+ if(encoder->protected_->do_qlp_coeff_prec_search) {
+ min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION;
+ /* try to ensure a 32-bit datapath throughout for 16bps(+1bps for side channel) or less */
+ if(subframe_bps <= 17) {
+ max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION);
+ max_qlp_coeff_precision = max(max_qlp_coeff_precision, min_qlp_coeff_precision);
+ }
+ else
+ max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION;
+ }
+ else {
+ min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision;
+ }
+ for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) {
+ _candidate_bits =
+ evaluate_lpc_subframe_(
+ encoder,
+ integer_signal,
+ residual[!_best_subframe],
+ encoder->private_->abs_residual_partition_sums,
+ encoder->private_->raw_bits_per_partition,
+ encoder->private_->lp_coeff[lpc_order-1],
+ frame_header->blocksize,
+ subframe_bps,
+ lpc_order,
+ qlp_coeff_precision,
+ rice_parameter,
+ rice_parameter_limit,
+ min_partition_order,
+ max_partition_order,
+ encoder->protected_->do_escape_coding,
+ encoder->protected_->rice_parameter_search_dist,
+ subframe[!_best_subframe],
+ partitioned_rice_contents[!_best_subframe]
+ );
+ if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */
+ if(_candidate_bits < _best_bits) {
+ _best_subframe = !_best_subframe;
+ _best_bits = _candidate_bits;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+#endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */
+ }
+ }
+
+ /* under rare circumstances this can happen when all but lpc subframe types are disabled: */
+ if(_best_bits == UINT_MAX) {
+ FLAC__ASSERT(_best_subframe == 0);
+ _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]);
+ }
+
+ *best_subframe = _best_subframe;
+ *best_bits = _best_bits;
+
+ return true;
+}
+
+FLAC__bool add_subframe_(
+ FLAC__StreamEncoder *encoder,
+ unsigned blocksize,
+ unsigned subframe_bps,
+ const FLAC__Subframe *subframe,
+ FLAC__BitWriter *frame
+)
+{
+ switch(subframe->type) {
+ case FLAC__SUBFRAME_TYPE_CONSTANT:
+ if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+ break;
+ case FLAC__SUBFRAME_TYPE_FIXED:
+ if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+ break;
+ case FLAC__SUBFRAME_TYPE_LPC:
+ if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+ break;
+ case FLAC__SUBFRAME_TYPE_VERBATIM:
+ if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) {
+ encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR;
+ return false;
+ }
+ break;
+ default:
+ FLAC__ASSERT(0);
+ }
+
+ return true;
+}
+
+#define SPOTCHECK_ESTIMATE 0
+#if SPOTCHECK_ESTIMATE
+static void spotcheck_subframe_estimate_(
+ FLAC__StreamEncoder *encoder,
+ unsigned blocksize,
+ unsigned subframe_bps,
+ const FLAC__Subframe *subframe,
+ unsigned estimate
+)
+{
+ FLAC__bool ret;
+ FLAC__BitWriter *frame = FLAC__bitwriter_new();
+ if(frame == 0) {
+ fprintf(stderr, "EST: can't allocate frame\n");
+ return;
+ }
+ if(!FLAC__bitwriter_init(frame)) {
+ fprintf(stderr, "EST: can't init frame\n");
+ return;
+ }
+ ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame);
+ FLAC__ASSERT(ret);
+ {
+ const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame);
+ if(estimate != actual)
+ fprintf(stderr, "EST: bad, frame#%u sub#%%d type=%8s est=%u, actual=%u, delta=%d\n", encoder->private_->current_frame_number, FLAC__SubframeTypeString[subframe->type], estimate, actual, (int)actual-(int)estimate);
+ }
+ FLAC__bitwriter_delete(frame);
+}
+#endif
+
+unsigned evaluate_constant_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal,
+ unsigned blocksize,
+ unsigned subframe_bps,
+ FLAC__Subframe *subframe
+)
+{
+ unsigned estimate;
+ subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT;
+ subframe->data.constant.value = signal;
+
+ estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps;
+
+#if SPOTCHECK_ESTIMATE
+ spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
+#else
+ (void)encoder, (void)blocksize;
+#endif
+
+ return estimate;
+}
+
+unsigned evaluate_fixed_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ unsigned order,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__Subframe *subframe,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
+)
+{
+ unsigned i, residual_bits, estimate;
+ const unsigned residual_samples = blocksize - order;
+
+ FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual);
+
+ subframe->type = FLAC__SUBFRAME_TYPE_FIXED;
+
+ subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
+ subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
+ subframe->data.fixed.residual = residual;
+
+ residual_bits =
+ find_best_partition_order_(
+ encoder->private_,
+ residual,
+ abs_residual_partition_sums,
+ raw_bits_per_partition,
+ residual_samples,
+ order,
+ rice_parameter,
+ rice_parameter_limit,
+ min_partition_order,
+ max_partition_order,
+ subframe_bps,
+ do_escape_coding,
+ rice_parameter_search_dist,
+ &subframe->data.fixed.entropy_coding_method
+ );
+
+ subframe->data.fixed.order = order;
+ for(i = 0; i < order; i++)
+ subframe->data.fixed.warmup[i] = signal[i];
+
+ estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits;
+
+#if SPOTCHECK_ESTIMATE
+ spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
+#endif
+
+ return estimate;
+}
+
+#ifndef FLAC__INTEGER_ONLY_LIBRARY
+unsigned evaluate_lpc_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ const FLAC__real lp_coeff[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ unsigned order,
+ unsigned qlp_coeff_precision,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__Subframe *subframe,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents
+)
+{
+ FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER];
+ unsigned i, residual_bits, estimate;
+ int quantization, ret;
+ const unsigned residual_samples = blocksize - order;
+
+ /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */
+ if(subframe_bps <= 16) {
+ FLAC__ASSERT(order > 0);
+ FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER);
+ qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order));
+ }
+
+ ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization);
+ if(ret != 0)
+ return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */
+
+ if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32)
+ if(subframe_bps <= 16 && qlp_coeff_precision <= 16)
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
+ else
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
+ else
+ encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual);
+
+ subframe->type = FLAC__SUBFRAME_TYPE_LPC;
+
+ subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE;
+ subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents;
+ subframe->data.lpc.residual = residual;
+
+ residual_bits =
+ find_best_partition_order_(
+ encoder->private_,
+ residual,
+ abs_residual_partition_sums,
+ raw_bits_per_partition,
+ residual_samples,
+ order,
+ rice_parameter,
+ rice_parameter_limit,
+ min_partition_order,
+ max_partition_order,
+ subframe_bps,
+ do_escape_coding,
+ rice_parameter_search_dist,
+ &subframe->data.lpc.entropy_coding_method
+ );
+
+ subframe->data.lpc.order = order;
+ subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision;
+ subframe->data.lpc.quantization_level = quantization;
+ memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER);
+ for(i = 0; i < order; i++)
+ subframe->data.lpc.warmup[i] = signal[i];
+
+ estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits;
+
+#if SPOTCHECK_ESTIMATE
+ spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
+#endif
+
+ return estimate;
+}
+#endif
+
+unsigned evaluate_verbatim_subframe_(
+ FLAC__StreamEncoder *encoder,
+ const FLAC__int32 signal[],
+ unsigned blocksize,
+ unsigned subframe_bps,
+ FLAC__Subframe *subframe
+)
+{
+ unsigned estimate;
+
+ subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM;
+
+ subframe->data.verbatim.data = signal;
+
+ estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps);
+
+#if SPOTCHECK_ESTIMATE
+ spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate);
+#else
+ (void)encoder;
+#endif
+
+ return estimate;
+}
+
+unsigned find_best_partition_order_(
+ FLAC__StreamEncoderPrivate *private_,
+ const FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned raw_bits_per_partition[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned rice_parameter,
+ unsigned rice_parameter_limit,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ unsigned bps,
+ FLAC__bool do_escape_coding,
+ unsigned rice_parameter_search_dist,
+ FLAC__EntropyCodingMethod *best_ecm
+)
+{
+ unsigned residual_bits, best_residual_bits = 0;
+ unsigned best_parameters_index = 0;
+ unsigned best_partition_order = 0;
+ const unsigned blocksize = residual_samples + predictor_order;
+
+ max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order);
+ min_partition_order = min(min_partition_order, max_partition_order);
+
+ precompute_partition_info_sums_(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps);
+
+ if(do_escape_coding)
+ precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order);
+
+ {
+ int partition_order;
+ unsigned sum;
+
+ for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) {
+ if(!
+ set_partitioned_rice_(
+#ifdef EXACT_RICE_BITS_CALCULATION
+ residual,
+#endif
+ abs_residual_partition_sums+sum,
+ raw_bits_per_partition+sum,
+ residual_samples,
+ predictor_order,
+ rice_parameter,
+ rice_parameter_limit,
+ rice_parameter_search_dist,
+ (unsigned)partition_order,
+ do_escape_coding,
+ &private_->partitioned_rice_contents_extra[!best_parameters_index],
+ &residual_bits
+ )
+ )
+ {
+ FLAC__ASSERT(best_residual_bits != 0);
+ break;
+ }
+ sum += 1u << partition_order;
+ if(best_residual_bits == 0 || residual_bits < best_residual_bits) {
+ best_residual_bits = residual_bits;
+ best_parameters_index = !best_parameters_index;
+ best_partition_order = partition_order;
+ }
+ }
+ }
+
+ best_ecm->data.partitioned_rice.order = best_partition_order;
+
+ {
+ /*
+ * We are allowed to de-const the pointer based on our special
+ * knowledge; it is const to the outside world.
+ */
+ FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents;
+ unsigned partition;
+
+ /* save best parameters and raw_bits */
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, max(6, best_partition_order));
+ memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order)));
+ if(do_escape_coding)
+ memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order)));
+ /*
+ * Now need to check if the type should be changed to
+ * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the
+ * size of the rice parameters.
+ */
+ for(partition = 0; partition < (1u<<best_partition_order); partition++) {
+ if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
+ best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2;
+ break;
+ }
+ }
+ }
+
+ return best_residual_bits;
+}
+
+#if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
+extern void precompute_partition_info_sums_32bit_asm_ia32_(
+ const FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned blocksize,
+ unsigned predictor_order,
+ unsigned min_partition_order,
+ unsigned max_partition_order
+);
+#endif
+
+void precompute_partition_info_sums_(
+ const FLAC__int32 residual[],
+ FLAC__uint64 abs_residual_partition_sums[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned min_partition_order,
+ unsigned max_partition_order,
+ unsigned bps
+)
+{
+ const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order;
+ unsigned partitions = 1u << max_partition_order;
+
+ FLAC__ASSERT(default_partition_samples > predictor_order);
+
+#if defined(FLAC__CPU_IA32) && !defined FLAC__NO_ASM && defined FLAC__HAS_NASM
+ /* slightly pessimistic but still catches all common cases */
+ /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
+ if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
+ precompute_partition_info_sums_32bit_asm_ia32_(residual, abs_residual_partition_sums, residual_samples + predictor_order, predictor_order, min_partition_order, max_partition_order);
+ return;
+ }
+#endif
+
+ /* first do max_partition_order */
+ {
+ unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order);
+ /* slightly pessimistic but still catches all common cases */
+ /* WATCHOUT: "+ bps" is an assumption that the average residual magnitude will not be more than "bps" bits */
+ if(FLAC__bitmath_ilog2(default_partition_samples) + bps < 32) {
+ FLAC__uint32 abs_residual_partition_sum;
+
+ for(partition = residual_sample = 0; partition < partitions; partition++) {
+ end += default_partition_samples;
+ abs_residual_partition_sum = 0;
+ for( ; residual_sample < end; residual_sample++)
+ abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
+ abs_residual_partition_sums[partition] = abs_residual_partition_sum;
+ }
+ }
+ else { /* have to pessimistically use 64 bits for accumulator */
+ FLAC__uint64 abs_residual_partition_sum;
+
+ for(partition = residual_sample = 0; partition < partitions; partition++) {
+ end += default_partition_samples;
+ abs_residual_partition_sum = 0;
+ for( ; residual_sample < end; residual_sample++)
+ abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */
+ abs_residual_partition_sums[partition] = abs_residual_partition_sum;
+ }
+ }
+ }
+
+ /* now merge partitions for lower orders */
+ {
+ unsigned from_partition = 0, to_partition = partitions;
+ int partition_order;
+ for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) {
+ unsigned i;
+ partitions >>= 1;
+ for(i = 0; i < partitions; i++) {
+ abs_residual_partition_sums[to_partition++] =
+ abs_residual_partition_sums[from_partition ] +
+ abs_residual_partition_sums[from_partition+1];
+ from_partition += 2;
+ }
+ }
+ }
+}
+
+void precompute_partition_info_escapes_(
+ const FLAC__int32 residual[],
+ unsigned raw_bits_per_partition[],
+ unsigned residual_samples,
+ unsigned predictor_order,
+ unsigned min_partition_order,
+ unsigned max_partition_order
+)
+{
+ int partition_order;
+ unsigned from_partition, to_partition = 0;
+ const unsigned blocksize = residual_samples + predictor_order;
+
+ /* first do max_partition_order */
+ for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) {
+ FLAC__int32 r;
+ FLAC__uint32 rmax;
+ unsigned partition, partition_sample, partition_samples, residual_sample;
+ const unsigned partitions = 1u << partition_order;
+ const unsigned default_partition_samples = blocksize >> partition_order;
+
+ FLAC__ASSERT(default_partition_samples > predictor_order);
+
+ for(partition = residual_sample = 0; partition < partitions; partition++) {
+ partition_samples = default_partition_samples;
+ if(partition == 0)
+ partition_samples -= predictor_order;
+ rmax = 0;
+ for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) {
+ r = residual[residual_sample++];
+ /* OPT: maybe faster: rmax |= r ^ (r>>31) */
+ if(r < 0)
+ rmax |= ~r;
+ else
+ rmax |= r;
+ }
+ /* now we know all residual values are in the range [-rmax-1,rmax] */
+ raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1;
+ }
+ to_partition = partitions;
+ break; /*@@@ yuck, should remove the 'for' loop instead */
+ }
+
+ /* now merge partitions for lower orders */
+ for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) {
+ unsigned m;
+ unsigned i;
+ const unsigned partitions = 1u << partition_order;
+ for(i = 0; i < partitions; i++) {
+ m = raw_bits_per_partition[from_partition];
+ from_partition++;
+ raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]);
+ from_partition++;
+ to_partition++;
+ }
+ }
+}
+
+#ifdef EXACT_RICE_BITS_CALCULATION
+static FLaC__INLINE unsigned count_rice_bits_in_partition_(
+ const unsigned rice_parameter,
+ const unsigned partition_samples,
+ const FLAC__int32 *residual
+)
+{
+ unsigned i, partition_bits =
+ FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
+ (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */
+ ;
+ for(i = 0; i < partition_samples; i++)
+ partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter );
+ return partition_bits;
+}
+#else
+static FLaC__INLINE unsigned count_rice_bits_in_partition_(
+ const unsigned rice_parameter,
+ const unsigned partition_samples,
+ const FLAC__uint64 abs_residual_partition_sum
+)
+{
+ return
+ FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */
+ (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */
+ (
+ rice_parameter?
+ (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */
+ : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */
+ )
+ - (partition_samples >> 1)
+ /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum.
+ * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1)
+ * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out.
+ * So the subtraction term tries to guess how many extra bits were contributed.
+ * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample.
+ */
+ ;
+}
+#endif
+
+FLAC__bool set_partitioned_rice_(
+#ifdef EXACT_RICE_BITS_CALCULATION
+ const FLAC__int32 residual[],
+#endif
+ const FLAC__uint64 abs_residual_partition_sums[],
+ const unsigned raw_bits_per_partition[],
+ const unsigned residual_samples,
+ const unsigned predictor_order,
+ const unsigned suggested_rice_parameter,
+ const unsigned rice_parameter_limit,
+ const unsigned rice_parameter_search_dist,
+ const unsigned partition_order,
+ const FLAC__bool search_for_escapes,
+ FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents,
+ unsigned *bits
+)
+{
+ unsigned rice_parameter, partition_bits;
+ unsigned best_partition_bits, best_rice_parameter = 0;
+ unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN;
+ unsigned *parameters, *raw_bits;
+#ifdef ENABLE_RICE_PARAMETER_SEARCH
+ unsigned min_rice_parameter, max_rice_parameter;
+#else
+ (void)rice_parameter_search_dist;
+#endif
+
+ FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
+ FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER);
+
+ FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order));
+ parameters = partitioned_rice_contents->parameters;
+ raw_bits = partitioned_rice_contents->raw_bits;
+
+ if(partition_order == 0) {
+ best_partition_bits = (unsigned)(-1);
+#ifdef ENABLE_RICE_PARAMETER_SEARCH
+ if(rice_parameter_search_dist) {
+ if(suggested_rice_parameter < rice_parameter_search_dist)
+ min_rice_parameter = 0;
+ else
+ min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist;
+ max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist;
+ if(max_rice_parameter >= rice_parameter_limit) {
+#ifdef DEBUG_VERBOSE
+ fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1);
+#endif
+ max_rice_parameter = rice_parameter_limit - 1;
+ }
+ }
+ else
+ min_rice_parameter = max_rice_parameter = suggested_rice_parameter;
+
+ for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
+#else
+ rice_parameter = suggested_rice_parameter;
+#endif
+#ifdef EXACT_RICE_BITS_CALCULATION
+ partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual);
+#else
+ partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]);
+#endif
+ if(partition_bits < best_partition_bits) {
+ best_rice_parameter = rice_parameter;
+ best_partition_bits = partition_bits;
+ }
+#ifdef ENABLE_RICE_PARAMETER_SEARCH
+ }
+#endif
+ if(search_for_escapes) {
+ partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples;
+ if(partition_bits <= best_partition_bits) {
+ raw_bits[0] = raw_bits_per_partition[0];
+ best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
+ best_partition_bits = partition_bits;
+ }
+ else
+ raw_bits[0] = 0;
+ }
+ parameters[0] = best_rice_parameter;
+ bits_ += best_partition_bits;
+ }
+ else {
+ unsigned partition, residual_sample;
+ unsigned partition_samples;
+ FLAC__uint64 mean, k;
+ const unsigned partitions = 1u << partition_order;
+ for(partition = residual_sample = 0; partition < partitions; partition++) {
+ partition_samples = (residual_samples+predictor_order) >> partition_order;
+ if(partition == 0) {
+ if(partition_samples <= predictor_order)
+ return false;
+ else
+ partition_samples -= predictor_order;
+ }
+ mean = abs_residual_partition_sums[partition];
+ /* we are basically calculating the size in bits of the
+ * average residual magnitude in the partition:
+ * rice_parameter = floor(log2(mean/partition_samples))
+ * 'mean' is not a good name for the variable, it is
+ * actually the sum of magnitudes of all residual values
+ * in the partition, so the actual mean is
+ * mean/partition_samples
+ */
+ for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1)
+ ;
+ if(rice_parameter >= rice_parameter_limit) {
+#ifdef DEBUG_VERBOSE
+ fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1);
+#endif
+ rice_parameter = rice_parameter_limit - 1;
+ }
+
+ best_partition_bits = (unsigned)(-1);
+#ifdef ENABLE_RICE_PARAMETER_SEARCH
+ if(rice_parameter_search_dist) {
+ if(rice_parameter < rice_parameter_search_dist)
+ min_rice_parameter = 0;
+ else
+ min_rice_parameter = rice_parameter - rice_parameter_search_dist;
+ max_rice_parameter = rice_parameter + rice_parameter_search_dist;
+ if(max_rice_parameter >= rice_parameter_limit) {
+#ifdef DEBUG_VERBOSE
+ fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1);
+#endif
+ max_rice_parameter = rice_parameter_limit - 1;
+ }
+ }
+ else
+ min_rice_parameter = max_rice_parameter = rice_parameter;
+
+ for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) {
+#endif
+#ifdef EXACT_RICE_BITS_CALCULATION
+ partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample);
+#else
+ partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]);
+#endif
+ if(partition_bits < best_partition_bits) {
+ best_rice_parameter = rice_parameter;
+ best_partition_bits = partition_bits;
+ }
+#ifdef ENABLE_RICE_PARAMETER_SEARCH
+ }
+#endif
+ if(search_for_escapes) {
+ partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples;
+ if(partition_bits <= best_partition_bits) {
+ raw_bits[partition] = raw_bits_per_partition[partition];
+ best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */
+ best_partition_bits = partition_bits;
+ }
+ else
+ raw_bits[partition] = 0;
+ }
+ parameters[partition] = best_rice_parameter;
+ bits_ += best_partition_bits;
+ residual_sample += partition_samples;
+ }
+ }
+
+ *bits = bits_;
+ return true;
+}
+
+unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples)
+{
+ unsigned i, shift;
+ FLAC__int32 x = 0;
+
+ for(i = 0; i < samples && !(x&1); i++)
+ x |= signal[i];
+
+ if(x == 0) {
+ shift = 0;
+ }
+ else {
+ for(shift = 0; !(x&1); shift++)
+ x >>= 1;
+ }
+
+ if(shift > 0) {
+ for(i = 0; i < samples; i++)
+ signal[i] >>= shift;
+ }
+
+ return shift;
+}
+
+void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
+{
+ unsigned channel;
+
+ for(channel = 0; channel < channels; channel++)
+ memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples);
+
+ fifo->tail += wide_samples;
+
+ FLAC__ASSERT(fifo->tail <= fifo->size);
+}
+
+void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples)
+{
+ unsigned channel;
+ unsigned sample, wide_sample;
+ unsigned tail = fifo->tail;
+
+ sample = input_offset * channels;
+ for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) {
+ for(channel = 0; channel < channels; channel++)
+ fifo->data[channel][tail] = input[sample++];
+ tail++;
+ }
+ fifo->tail = tail;
+
+ FLAC__ASSERT(fifo->tail <= fifo->size);
+}
+
+FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+ FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
+ const size_t encoded_bytes = encoder->private_->verify.output.bytes;
+ (void)decoder;
+
+ if(encoder->private_->verify.needs_magic_hack) {
+ FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH);
+ *bytes = FLAC__STREAM_SYNC_LENGTH;
+ memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes);
+ encoder->private_->verify.needs_magic_hack = false;
+ }
+ else {
+ if(encoded_bytes == 0) {
+ /*
+ * If we get here, a FIFO underflow has occurred,
+ * which means there is a bug somewhere.
+ */
+ FLAC__ASSERT(0);
+ return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
+ }
+ else if(encoded_bytes < *bytes)
+ *bytes = encoded_bytes;
+ memcpy(buffer, encoder->private_->verify.output.data, *bytes);
+ encoder->private_->verify.output.data += *bytes;
+ encoder->private_->verify.output.bytes -= *bytes;
+ }
+
+ return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
+}
+
+FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+ FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data;
+ unsigned channel;
+ const unsigned channels = frame->header.channels;
+ const unsigned blocksize = frame->header.blocksize;
+ const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize;
+
+ (void)decoder;
+
+ for(channel = 0; channel < channels; channel++) {
+ if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) {
+ unsigned i, sample = 0;
+ FLAC__int32 expect = 0, got = 0;
+
+ for(i = 0; i < blocksize; i++) {
+ if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) {
+ sample = i;
+ expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i];
+ got = (FLAC__int32)buffer[channel][i];
+ break;
+ }
+ }
+ FLAC__ASSERT(i < blocksize);
+ FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER);
+ encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample;
+ encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize);
+ encoder->private_->verify.error_stats.channel = channel;
+ encoder->private_->verify.error_stats.sample = sample;
+ encoder->private_->verify.error_stats.expected = expect;
+ encoder->private_->verify.error_stats.got = got;
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA;
+ return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
+ }
+ }
+ /* dequeue the frame from the fifo */
+ encoder->private_->verify.input_fifo.tail -= blocksize;
+ FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_);
+ for(channel = 0; channel < channels; channel++)
+ memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0]));
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
+}
+
+void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+ (void)decoder, (void)metadata, (void)client_data;
+}
+
+void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+ FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data;
+ (void)decoder, (void)status;
+ encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR;
+}
+
+FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
+{
+ (void)client_data;
+
+ *bytes = fread(buffer, 1, *bytes, encoder->private_->file);
+ if (*bytes == 0) {
+ if (feof(encoder->private_->file))
+ return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM;
+ else if (ferror(encoder->private_->file))
+ return FLAC__STREAM_ENCODER_READ_STATUS_ABORT;
+ }
+ return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE;
+}
+
+FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data)
+{
+ (void)client_data;
+
+ if(fseeko(encoder->private_->file, (off_t)absolute_byte_offset, SEEK_SET) < 0)
+ return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
+ else
+ return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
+}
+
+FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
+{
+ off_t offset;
+
+ (void)client_data;
+
+ offset = ftello(encoder->private_->file);
+
+ if(offset < 0) {
+ return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
+ }
+ else {
+ *absolute_byte_offset = (FLAC__uint64)offset;
+ return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
+ }
+}
+
+#ifdef FLAC__VALGRIND_TESTING
+static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+ size_t ret = fwrite(ptr, size, nmemb, stream);
+ if(!ferror(stream))
+ fflush(stream);
+ return ret;
+}
+#else
+#define local__fwrite fwrite
+#endif
+
+FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data)
+{
+ (void)client_data, (void)current_frame;
+
+ if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) {
+ FLAC__bool call_it = 0 != encoder->private_->progress_callback && (
+#if FLAC__HAS_OGG
+ /* We would like to be able to use 'samples > 0' in the
+ * clause here but currently because of the nature of our
+ * Ogg writing implementation, 'samples' is always 0 (see
+ * ogg_encoder_aspect.c). The downside is extra progress
+ * callbacks.
+ */
+ encoder->private_->is_ogg? true :
+#endif
+ samples > 0
+ );
+ if(call_it) {
+ /* NOTE: We have to add +bytes, +samples, and +1 to the stats
+ * because at this point in the callback chain, the stats
+ * have not been updated. Only after we return and control
+ * gets back to write_frame_() are the stats updated
+ */
+ encoder->private_->progress_callback(encoder, encoder->private_->bytes_written+bytes, encoder->private_->samples_written+samples, encoder->private_->frames_written+(samples?1:0), encoder->private_->total_frames_estimate, encoder->private_->client_data);
+ }
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+ }
+ else
+ return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
+}
+
+/*
+ * This will forcibly set stdout to binary mode (for OSes that require it)
+ */
+FILE *get_binary_stdout_(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(stdout), _O_BINARY);
+#elif defined __CYGWIN__
+ /* almost certainly not needed for any modern Cygwin, but let's be safe... */
+ setmode(_fileno(stdout), _O_BINARY);
+#elif defined __EMX__
+ setmode(fileno(stdout), O_BINARY);
+#endif
+
+ return stdout;
+}
Property changes on: flac/src/libFLAC/stream_encoder.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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