Removed custom FFmpegLock. Removed ffmpeg headers from third_party/ffmpeg/include.

third_party/ffmpeg/include/libavformat/avformat.h

Index: third_party/ffmpeg/include/libavformat/avformat.h
diff --git a/third_party/ffmpeg/include/libavformat/avformat.h b/third_party/ffmpeg/include/libavformat/avformat.h
deleted file mode 100644
index 8732b564469b3e572365eebfcd9c4e9a880ca4c5..0000000000000000000000000000000000000000
--- a/third_party/ffmpeg/include/libavformat/avformat.h
+++ /dev/null
@@ -1,1238 +0,0 @@
-/*
- * copyright (c) 2001 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVFORMAT_AVFORMAT_H
-#define AVFORMAT_AVFORMAT_H
-
-#define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 32
-#define LIBAVFORMAT_VERSION_MICRO  0
-
-#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
-                                               LIBAVFORMAT_VERSION_MINOR, \
-                                               LIBAVFORMAT_VERSION_MICRO)
-#define LIBAVFORMAT_VERSION     AV_VERSION(LIBAVFORMAT_VERSION_MAJOR,   \
-                                           LIBAVFORMAT_VERSION_MINOR,   \
-                                           LIBAVFORMAT_VERSION_MICRO)
-#define LIBAVFORMAT_BUILD       LIBAVFORMAT_VERSION_INT
-
-#define LIBAVFORMAT_IDENT       "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
-
-/**
- * Returns the LIBAVFORMAT_VERSION_INT constant.
- */
-unsigned avformat_version(void);
-
-#include <time.h>
-#include <stdio.h>  /* FILE */
-#include "libavcodec/avcodec.h"
-
-#include "avio.h"
-
-struct AVFormatContext;
-
-
-/*
- * Public Metadata API.
- * The metadata API allows libavformat to export metadata tags to a client
- * application using a sequence of key/value pairs.
- * Important concepts to keep in mind:
- * 1. Keys are unique; there can never be 2 tags with the same key. This is
- *    also meant semantically, i.e., a demuxer should not knowingly produce
- *    several keys that are literally different but semantically identical.
- *    E.g., key=Author5, key=Author6. In this example, all authors must be
- *    placed in the same tag.
- * 2. Metadata is flat, not hierarchical; there are no subtags. If you
- *    want to store, e.g., the email address of the child of producer Alice
- *    and actor Bob, that could have key=alice_and_bobs_childs_email_address.
- * 3. A tag whose value is localized for a particular language is appended
- *    with a dash character ('-') and the ISO 639-2/B 3-letter language code.
- *    For example: Author-ger=Michael, Author-eng=Mike
- *    The original/default language is in the unqualified "Author" tag.
- *    A demuxer should set a default if it sets any translated tag.
- */
-
-#define AV_METADATA_MATCH_CASE      1
-#define AV_METADATA_IGNORE_SUFFIX   2
-
-typedef struct {
-    char *key;
-    char *value;
-}AVMetadataTag;
-
-typedef struct AVMetadata AVMetadata;
-typedef struct AVMetadataConv AVMetadataConv;
-
-/**
- * Gets a metadata element with matching key.
- * @param prev Set to the previous matching element to find the next.
- * @param flags Allows case as well as suffix-insensitive comparisons.
- * @return Found tag or NULL, changing key or value leads to undefined behavior.
- */
-AVMetadataTag *
-av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags);
-
-/**
- * Sets the given tag in m, overwriting an existing tag.
- * @param key tag key to add to m (will be av_strduped)
- * @param value tag value to add to m (will be av_strduped)
- * @return >= 0 on success otherwise an error code <0
- */
-int av_metadata_set(AVMetadata **pm, const char *key, const char *value);
-
-/**
- * Convert all the metadata sets from ctx according to the source and
- * destination conversion tables.
- * @param d_conv destination tags format conversion table
- * @param s_conv source tags format conversion table
- */
-void av_metadata_conv(struct AVFormatContext *ctx,const AVMetadataConv *d_conv,
-                                                  const AVMetadataConv *s_conv);
-
-/**
- * Frees all the memory allocated for an AVMetadata struct.
- */
-void av_metadata_free(AVMetadata **m);
-
-
-/* packet functions */
-
-
-/**
- * Allocate and read the payload of a packet and initialize its fields with
- * default values.
- *
- * @param pkt packet
- * @param size desired payload size
- * @return >0 (read size) if OK, AVERROR_xxx otherwise
- */
-int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
-
-
-/*************************************************/
-/* fractional numbers for exact pts handling */
-
-/**
- * The exact value of the fractional number is: 'val + num / den'.
- * num is assumed to be 0 <= num < den.
- */
-typedef struct AVFrac {
-    int64_t val, num, den;
-} AVFrac;
-
-/*************************************************/
-/* input/output formats */
-
-struct AVCodecTag;
-
-/** This structure contains the data a format has to probe a file. */
-typedef struct AVProbeData {
-    const char *filename;
-    unsigned char *buf;
-    int buf_size;
-} AVProbeData;
-
-#define AVPROBE_SCORE_MAX 100               ///< maximum score, half of that is used for file-extension-based detection
-#define AVPROBE_PADDING_SIZE 32             ///< extra allocated bytes at the end of the probe buffer
-
-typedef struct AVFormatParameters {
-    AVRational time_base;
-    int sample_rate;
-    int channels;
-    int width;
-    int height;
-    enum PixelFormat pix_fmt;
-    int channel; /**< Used to select DV channel. */
-    const char *standard; /**< TV standard, NTSC, PAL, SECAM */
-    unsigned int mpeg2ts_raw:1;  /**< Force raw MPEG-2 transport stream output, if possible. */
-    unsigned int mpeg2ts_compute_pcr:1; /**< Compute exact PCR for each transport
-                                            stream packet (only meaningful if
-                                            mpeg2ts_raw is TRUE). */
-    unsigned int initial_pause:1;       /**< Do not begin to play the stream
-                                            immediately (RTSP only). */
-    unsigned int prealloced_context:1;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    enum CodecID video_codec_id;
-    enum CodecID audio_codec_id;
-#endif
-} AVFormatParameters;
-
-//! Demuxer will use url_fopen, no opened file should be provided by the caller.
-#define AVFMT_NOFILE        0x0001
-#define AVFMT_NEEDNUMBER    0x0002 /**< Needs '%d' in filename. */
-#define AVFMT_SHOW_IDS      0x0008 /**< Show format stream IDs numbers. */
-#define AVFMT_RAWPICTURE    0x0020 /**< Format wants AVPicture structure for
-                                      raw picture data. */
-#define AVFMT_GLOBALHEADER  0x0040 /**< Format wants global header. */
-#define AVFMT_NOTIMESTAMPS  0x0080 /**< Format does not need / have any timestamps. */
-#define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */
-#define AVFMT_TS_DISCONT    0x0200 /**< Format allows timestamp discontinuities. */
-#define AVFMT_VARIABLE_FPS  0x0400 /**< Format allows variable fps. */
-
-typedef struct AVOutputFormat {
-    const char *name;
-    /**
-     * Descriptive name for the format, meant to be more human-readable
-     * than \p name. You \e should use the NULL_IF_CONFIG_SMALL() macro
-     * to define it.
-     */
-    const char *long_name;
-    const char *mime_type;
-    const char *extensions; /**< comma-separated filename extensions */
-    /** size of private data so that it can be allocated in the wrapper */
-    int priv_data_size;
-    /* output support */
-    enum CodecID audio_codec; /**< default audio codec */
-    enum CodecID video_codec; /**< default video codec */
-    int (*write_header)(struct AVFormatContext *);
-    int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
-    int (*write_trailer)(struct AVFormatContext *);
-    /** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
-    int flags;
-    /** Currently only used to set pixel format if not YUV420P. */
-    int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
-    int (*interleave_packet)(struct AVFormatContext *, AVPacket *out,
-                             AVPacket *in, int flush);
-
-    /**
-     * List of supported codec_id-codec_tag pairs, ordered by "better
-     * choice first". The arrays are all terminated by CODEC_ID_NONE.
-     */
-    const struct AVCodecTag * const *codec_tag;
-
-    enum CodecID subtitle_codec; /**< default subtitle codec */
-
-    const AVMetadataConv *metadata_conv;
-
-    /* private fields */
-    struct AVOutputFormat *next;
-} AVOutputFormat;
-
-typedef struct AVInputFormat {
-    const char *name;
-    /**
-     * Descriptive name for the format, meant to be more human-readable
-     * than \p name. You \e should use the NULL_IF_CONFIG_SMALL() macro
-     * to define it.
-     */
-    const char *long_name;
-    /** Size of private data so that it can be allocated in the wrapper. */
-    int priv_data_size;
-    /**
-     * Tell if a given file has a chance of being parsed as this format.
-     * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes
-     * big so you do not have to check for that unless you need more.
-     */
-    int (*read_probe)(AVProbeData *);
-    /** Read the format header and initialize the AVFormatContext
-       structure. Return 0 if OK. 'ap' if non-NULL contains
-       additional parameters. Only used in raw format right
-       now. 'av_new_stream' should be called to create new streams.  */
-    int (*read_header)(struct AVFormatContext *,
-                       AVFormatParameters *ap);
-    /** Read one packet and put it in 'pkt'. pts and flags are also
-       set. 'av_new_stream' can be called only if the flag
-       AVFMTCTX_NOHEADER is used.
-       @return 0 on success, < 0 on error.
-               When returning an error, pkt must not have been allocated
-               or must be freed before returning */
-    int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
-    /** Close the stream. The AVFormatContext and AVStreams are not
-       freed by this function */
-    int (*read_close)(struct AVFormatContext *);
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-    /**
-     * Seek to a given timestamp relative to the frames in
-     * stream component stream_index.
-     * @param stream_index Must not be -1.
-     * @param flags Selects which direction should be preferred if no exact
-     *              match is available.
-     * @return >= 0 on success (but not necessarily the new offset)
-     */
-    int (*read_seek)(struct AVFormatContext *,
-                     int stream_index, int64_t timestamp, int flags);
-#endif
-    /**
-     * Gets the next timestamp in stream[stream_index].time_base units.
-     * @return the timestamp or AV_NOPTS_VALUE if an error occurred
-     */
-    int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
-                              int64_t *pos, int64_t pos_limit);
-    /** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. */
-    int flags;
-    /** If extensions are defined, then no probe is done. You should
-       usually not use extension format guessing because it is not
-       reliable enough */
-    const char *extensions;
-    /** General purpose read-only value that the format can use. */
-    int value;
-
-    /** Start/resume playing - only meaningful if using a network-based format
-       (RTSP). */
-    int (*read_play)(struct AVFormatContext *);
-
-    /** Pause playing - only meaningful if using a network-based format
-       (RTSP). */
-    int (*read_pause)(struct AVFormatContext *);
-
-    const struct AVCodecTag * const *codec_tag;
-
-    /**
-     * Seek to timestamp ts.
-     * Seeking will be done so that the point from which all active streams
-     * can be presented successfully will be closest to ts and within min/max_ts.
-     * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL.
-     */
-    int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
-
-    const AVMetadataConv *metadata_conv;
-
-    /* private fields */
-    struct AVInputFormat *next;
-} AVInputFormat;
-
-enum AVStreamParseType {
-    AVSTREAM_PARSE_NONE,
-    AVSTREAM_PARSE_FULL,       /**< full parsing and repack */
-    AVSTREAM_PARSE_HEADERS,    /**< Only parse headers, do not repack. */
-    AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */
-};
-
-typedef struct AVIndexEntry {
-    int64_t pos;
-    int64_t timestamp;
-#define AVINDEX_KEYFRAME 0x0001
-    int flags:2;
-    int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment).
-    int min_distance;         /**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. */
-} AVIndexEntry;
-
-#define AV_DISPOSITION_DEFAULT   0x0001
-#define AV_DISPOSITION_DUB       0x0002
-#define AV_DISPOSITION_ORIGINAL  0x0004
-#define AV_DISPOSITION_COMMENT   0x0008
-#define AV_DISPOSITION_LYRICS    0x0010
-#define AV_DISPOSITION_KARAOKE   0x0020
-
-/**
- * Stream structure.
- * New fields can be added to the end with minor version bumps.
- * Removal, reordering and changes to existing fields require a major
- * version bump.
- * sizeof(AVStream) must not be used outside libav*.
- */
-typedef struct AVStream {
-    int index;    /**< stream index in AVFormatContext */
-    int id;       /**< format-specific stream ID */
-    AVCodecContext *codec; /**< codec context */
-    /**
-     * Real base framerate of the stream.
-     * This is the lowest framerate with which all timestamps can be
-     * represented accurately (it is the least common multiple of all
-     * framerates in the stream). Note, this value is just a guess!
-     * For example, if the time base is 1/90000 and all frames have either
-     * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1.
-     */
-    AVRational r_frame_rate;
-    void *priv_data;
-
-    /* internal data used in av_find_stream_info() */
-    int64_t first_dts;
-    /** encoding: pts generation when outputting stream */
-    struct AVFrac pts;
-
-    /**
-     * This is the fundamental unit of time (in seconds) in terms
-     * of which frame timestamps are represented. For fixed-fps content,
-     * time base should be 1/framerate and timestamp increments should be 1.
-     */
-    AVRational time_base;
-    int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
-    /* ffmpeg.c private use */
-    int stream_copy; /**< If set, just copy stream. */
-    enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed.
-    //FIXME move stuff to a flags field?
-    /** Quality, as it has been removed from AVCodecContext and put in AVVideoFrame.
-     * MN: dunno if that is the right place for it */
-    float quality;
-    /**
-     * Decoding: pts of the first frame of the stream, in stream time base.
-     * Only set this if you are absolutely 100% sure that the value you set
-     * it to really is the pts of the first frame.
-     * This may be undefined (AV_NOPTS_VALUE).
-     * @note The ASF header does NOT contain a correct start_time the ASF
-     * demuxer must NOT set this.
-     */
-    int64_t start_time;
-    /**
-     * Decoding: duration of the stream, in stream time base.
-     * If a source file does not specify a duration, but does specify
-     * a bitrate, this value will be estimated from bitrate and file size.
-     */
-    int64_t duration;
-
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    char language[4]; /** ISO 639-2/B 3-letter language code (empty string if undefined) */
-#endif
-
-    /* av_read_frame() support */
-    enum AVStreamParseType need_parsing;
-    struct AVCodecParserContext *parser;
-
-    int64_t cur_dts;
-    int last_IP_duration;
-    int64_t last_IP_pts;
-    /* av_seek_frame() support */
-    AVIndexEntry *index_entries; /**< Only used if the format does not
-                                    support seeking natively. */
-    int nb_index_entries;
-    unsigned int index_entries_allocated_size;
-
-    int64_t nb_frames;                 ///< number of frames in this stream if known or 0
-
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    int64_t unused[4+1];
-
-    char *filename; /**< source filename of the stream */
-#endif
-
-    int disposition; /**< AV_DISPOSITION_* bit field */
-
-    AVProbeData probe_data;
-#define MAX_REORDER_DELAY 16
-    int64_t pts_buffer[MAX_REORDER_DELAY+1];
-
-    /**
-     * sample aspect ratio (0 if unknown)
-     * - encoding: Set by user.
-     * - decoding: Set by libavformat.
-     */
-    AVRational sample_aspect_ratio;
-
-    AVMetadata *metadata;
-
-    /* av_read_frame() support */
-    const uint8_t *cur_ptr;
-    int cur_len;
-    AVPacket cur_pkt;
-
-    // Timestamp generation support:
-    /**
-     * Timestamp corresponding to the last dts sync point.
-     *
-     * Initialized when AVCodecParserContext.dts_sync_point >= 0 and
-     * a DTS is received from the underlying container. Otherwise set to
-     * AV_NOPTS_VALUE by default.
-     */
-    int64_t reference_dts;
-} AVStream;
-
-#define AV_PROGRAM_RUNNING 1
-
-/**
- * New fields can be added to the end with minor version bumps.
- * Removal, reordering and changes to existing fields require a major
- * version bump.
- * sizeof(AVProgram) must not be used outside libav*.
- */
-typedef struct AVProgram {
-    int            id;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    char           *provider_name; ///< network name for DVB streams
-    char           *name;          ///< service name for DVB streams
-#endif
-    int            flags;
-    enum AVDiscard discard;        ///< selects which program to discard and which to feed to the caller
-    unsigned int   *stream_index;
-    unsigned int   nb_stream_indexes;
-    AVMetadata *metadata;
-} AVProgram;
-
-#define AVFMTCTX_NOHEADER      0x0001 /**< signal that no header is present
-                                         (streams are added dynamically) */
-
-typedef struct AVChapter {
-    int id;                 ///< unique ID to identify the chapter
-    AVRational time_base;   ///< time base in which the start/end timestamps are specified
-    int64_t start, end;     ///< chapter start/end time in time_base units
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    char *title;            ///< chapter title
-#endif
-    AVMetadata *metadata;
-} AVChapter;
-
-#define MAX_STREAMS 20
-
-/**
- * Format I/O context.
- * New fields can be added to the end with minor version bumps.
- * Removal, reordering and changes to existing fields require a major
- * version bump.
- * sizeof(AVFormatContext) must not be used outside libav*.
- */
-typedef struct AVFormatContext {
-    const AVClass *av_class; /**< Set by avformat_alloc_context. */
-    /* Can only be iformat or oformat, not both at the same time. */
-    struct AVInputFormat *iformat;
-    struct AVOutputFormat *oformat;
-    void *priv_data;
-    ByteIOContext *pb;
-    unsigned int nb_streams;
-    AVStream *streams[MAX_STREAMS];
-    char filename[1024]; /**< input or output filename */
-    /* stream info */
-    int64_t timestamp;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    char title[512];
-    char author[512];
-    char copyright[512];
-    char comment[512];
-    char album[512];
-    int year;  /**< ID3 year, 0 if none */
-    int track; /**< track number, 0 if none */
-    char genre[32]; /**< ID3 genre */
-#endif
-
-    int ctx_flags; /**< Format-specific flags, see AVFMTCTX_xx */
-    /* private data for pts handling (do not modify directly). */
-    /** This buffer is only needed when packets were already buffered but
-       not decoded, for example to get the codec parameters in MPEG
-       streams. */
-    struct AVPacketList *packet_buffer;
-
-    /** Decoding: position of the first frame of the component, in
-       AV_TIME_BASE fractional seconds. NEVER set this value directly:
-       It is deduced from the AVStream values.  */
-    int64_t start_time;
-    /** Decoding: duration of the stream, in AV_TIME_BASE fractional
-       seconds. NEVER set this value directly: it is deduced from the
-       AVStream values.  */
-    int64_t duration;
-    /** decoding: total file size, 0 if unknown */
-    int64_t file_size;
-    /** Decoding: total stream bitrate in bit/s, 0 if not
-       available. Never set it directly if the file_size and the
-       duration are known as FFmpeg can compute it automatically. */
-    int bit_rate;
-
-    /* av_read_frame() support */
-    AVStream *cur_st;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-    const uint8_t *cur_ptr_deprecated;
-    int cur_len_deprecated;
-    AVPacket cur_pkt_deprecated;
-#endif
-
-    /* av_seek_frame() support */
-    int64_t data_offset; /** offset of the first packet */
-    int index_built;
-
-    int mux_rate;
-    int packet_size;
-    int preload;
-    int max_delay;
-
-#define AVFMT_NOOUTPUTLOOP -1
-#define AVFMT_INFINITEOUTPUTLOOP 0
-    /** number of times to loop output in formats that support it */
-    int loop_output;
-
-    int flags;
-#define AVFMT_FLAG_GENPTS       0x0001 ///< Generate missing pts even if it requires parsing future frames.
-#define AVFMT_FLAG_IGNIDX       0x0002 ///< Ignore index.
-#define AVFMT_FLAG_NONBLOCK     0x0004 ///< Do not block when reading packets from input.
-
-    int loop_input;
-    /** decoding: size of data to probe; encoding: unused. */
-    unsigned int probesize;
-
-    /**
-     * Maximum time (in AV_TIME_BASE units) during which the input should
-     * be analyzed in av_find_stream_info().
-     */
-    int max_analyze_duration;
-
-    const uint8_t *key;
-    int keylen;
-
-    unsigned int nb_programs;
-    AVProgram **programs;
-
-    /**
-     * Forced video codec_id.
-     * Demuxing: Set by user.
-     */
-    enum CodecID video_codec_id;
-    /**
-     * Forced audio codec_id.
-     * Demuxing: Set by user.
-     */
-    enum CodecID audio_codec_id;
-    /**
-     * Forced subtitle codec_id.
-     * Demuxing: Set by user.
-     */
-    enum CodecID subtitle_codec_id;
-
-    /**
-     * Maximum amount of memory in bytes to use for the index of each stream.
-     * If the index exceeds this size, entries will be discarded as
-     * needed to maintain a smaller size. This can lead to slower or less
-     * accurate seeking (depends on demuxer).
-     * Demuxers for which a full in-memory index is mandatory will ignore
-     * this.
-     * muxing  : unused
-     * demuxing: set by user
-     */
-    unsigned int max_index_size;
-
-    /**
-     * Maximum amount of memory in bytes to use for buffering frames
-     * obtained from realtime capture devices.
-     */
-    unsigned int max_picture_buffer;
-
-    unsigned int nb_chapters;
-    AVChapter **chapters;
-
-    /**
-     * Flags to enable debugging.
-     */
-    int debug;
-#define FF_FDEBUG_TS        0x0001
-
-    /**
-     * Raw packets from the demuxer, prior to parsing and decoding.
-     * This buffer is used for buffering packets until the codec can
-     * be identified, as parsing cannot be done without knowing the
-     * codec.
-     */
-    struct AVPacketList *raw_packet_buffer;
-    struct AVPacketList *raw_packet_buffer_end;
-
-    struct AVPacketList *packet_buffer_end;
-
-    AVMetadata *metadata;
-} AVFormatContext;
-
-typedef struct AVPacketList {
-    AVPacket pkt;
-    struct AVPacketList *next;
-} AVPacketList;
-
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-extern AVInputFormat *first_iformat;
-extern AVOutputFormat *first_oformat;
-#endif
-
-/**
- * If f is NULL, returns the first registered input format,
- * if f is non-NULL, returns the next registered input format after f
- * or NULL if f is the last one.
- */
-AVInputFormat  *av_iformat_next(AVInputFormat  *f);
-
-/**
- * If f is NULL, returns the first registered output format,
- * if f is non-NULL, returns the next registered output format after f
- * or NULL if f is the last one.
- */
-AVOutputFormat *av_oformat_next(AVOutputFormat *f);
-
-enum CodecID av_guess_image2_codec(const char *filename);
-
-/* XXX: Use automatic init with either ELF sections or C file parser */
-/* modules. */
-
-/* utils.c */
-void av_register_input_format(AVInputFormat *format);
-void av_register_output_format(AVOutputFormat *format);
-AVOutputFormat *guess_stream_format(const char *short_name,
-                                    const char *filename,
-                                    const char *mime_type);
-AVOutputFormat *guess_format(const char *short_name,
-                             const char *filename,
-                             const char *mime_type);
-
-/**
- * Guesses the codec ID based upon muxer and filename.
- */
-enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
-                            const char *filename, const char *mime_type,
-                            enum CodecType type);
-
-/**
- * Send a nice hexadecimal dump of a buffer to the specified file stream.
- *
- * @param f The file stream pointer where the dump should be sent to.
- * @param buf buffer
- * @param size buffer size
- *
- * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log
- */
-void av_hex_dump(FILE *f, uint8_t *buf, int size);
-
-/**
- * Send a nice hexadecimal dump of a buffer to the log.
- *
- * @param avcl A pointer to an arbitrary struct of which the first field is a
- * pointer to an AVClass struct.
- * @param level The importance level of the message, lower values signifying
- * higher importance.
- * @param buf buffer
- * @param size buffer size
- *
- * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log
- */
-void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size);
-
-/**
- * Send a nice dump of a packet to the specified file stream.
- *
- * @param f The file stream pointer where the dump should be sent to.
- * @param pkt packet to dump
- * @param dump_payload True if the payload must be displayed, too.
- */
-void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
-
-/**
- * Send a nice dump of a packet to the log.
- *
- * @param avcl A pointer to an arbitrary struct of which the first field is a
- * pointer to an AVClass struct.
- * @param level The importance level of the message, lower values signifying
- * higher importance.
- * @param pkt packet to dump
- * @param dump_payload True if the payload must be displayed, too.
- */
-void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload);
-
-/**
- * Initialize libavformat and register all the muxers, demuxers and
- * protocols. If you do not call this function, then you can select
- * exactly which formats you want to support.
- *
- * @see av_register_input_format()
- * @see av_register_output_format()
- * @see av_register_protocol()
- */
-void av_register_all(void);
-
-/** codec tag <-> codec id */
-enum CodecID av_codec_get_id(const struct AVCodecTag * const *tags, unsigned int tag);
-unsigned int av_codec_get_tag(const struct AVCodecTag * const *tags, enum CodecID id);
-
-/* media file input */
-
-/**
- * Finds AVInputFormat based on the short name of the input format.
- */
-AVInputFormat *av_find_input_format(const char *short_name);
-
-/**
- * Guess file format.
- *
- * @param is_opened Whether the file is already opened; determines whether
- *                  demuxers with or without AVFMT_NOFILE are probed.
- */
-AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
-
-/**
- * Allocates all the structures needed to read an input stream.
- *        This does not open the needed codecs for decoding the stream[s].
- */
-int av_open_input_stream(AVFormatContext **ic_ptr,
-                         ByteIOContext *pb, const char *filename,
-                         AVInputFormat *fmt, AVFormatParameters *ap);
-
-/**
- * Open a media file as input. The codecs are not opened. Only the file
- * header (if present) is read.
- *
- * @param ic_ptr The opened media file handle is put here.
- * @param filename filename to open
- * @param fmt If non-NULL, force the file format to use.
- * @param buf_size optional buffer size (zero if default is OK)
- * @param ap Additional parameters needed when opening the file
- *           (NULL if default).
- * @return 0 if OK, AVERROR_xxx otherwise
- */
-int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
-                       AVInputFormat *fmt,
-                       int buf_size,
-                       AVFormatParameters *ap);
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-/**
- * @deprecated Use avformat_alloc_context() instead.
- */
-attribute_deprecated AVFormatContext *av_alloc_format_context(void);
-#endif
-
-/**
- * Allocate an AVFormatContext.
- * Can be freed with av_free() but do not forget to free everything you
- * explicitly allocated as well!
- */
-AVFormatContext *avformat_alloc_context(void);
-
-/**
- * Read packets of a media file to get stream information. This
- * is useful for file formats with no headers such as MPEG. This
- * function also computes the real framerate in case of MPEG-2 repeat
- * frame mode.
- * The logical file position is not changed by this function;
- * examined packets may be buffered for later processing.
- *
- * @param ic media file handle
- * @return >=0 if OK, AVERROR_xxx on error
- * @todo Let the user decide somehow what information is needed so that
- *       we do not waste time getting stuff the user does not need.
- */
-int av_find_stream_info(AVFormatContext *ic);
-
-/**
- * Read a transport packet from a media file.
- *
- * This function is obsolete and should never be used.
- * Use av_read_frame() instead.
- *
- * @param s media file handle
- * @param pkt is filled
- * @return 0 if OK, AVERROR_xxx on error
- */
-int av_read_packet(AVFormatContext *s, AVPacket *pkt);
-
-/**
- * Return the next frame of a stream.
- *
- * The returned packet is valid
- * until the next av_read_frame() or until av_close_input_file() and
- * must be freed with av_free_packet. For video, the packet contains
- * exactly one frame. For audio, it contains an integer number of
- * frames if each frame has a known fixed size (e.g. PCM or ADPCM
- * data). If the audio frames have a variable size (e.g. MPEG audio),
- * then it contains one frame.
- *
- * pkt->pts, pkt->dts and pkt->duration are always set to correct
- * values in AVStream.time_base units (and guessed if the format cannot
- * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format
- * has B-frames, so it is better to rely on pkt->dts if you do not
- * decompress the payload.
- *
- * @return 0 if OK, < 0 on error or end of file
- */
-int av_read_frame(AVFormatContext *s, AVPacket *pkt);
-
-/**
- * Seek to the keyframe at timestamp.
- * 'timestamp' in 'stream_index'.
- * @param stream_index If stream_index is (-1), a default
- * stream is selected, and timestamp is automatically converted
- * from AV_TIME_BASE units to the stream specific time_base.
- * @param timestamp Timestamp in AVStream.time_base units
- *        or, if no stream is specified, in AV_TIME_BASE units.
- * @param flags flags which select direction and seeking mode
- * @return >= 0 on success
- */
-int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp,
-                  int flags);
-
-/**
- * Seek to timestamp ts.
- * Seeking will be done so that the point from which all active streams
- * can be presented successfully will be closest to ts and within min/max_ts.
- * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL.
- *
- * If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in bytes and
- * are the file position (this may not be supported by all demuxers).
- * If flags contain AVSEEK_FLAG_FRAME, then all timestamps are in frames
- * in the stream with stream_index (this may not be supported by all demuxers).
- * Otherwise all timestamps are in units of the stream selected by stream_index
- * or if stream_index is -1, in AV_TIME_BASE units.
- * If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as
- * keyframes (this may not be supported by all demuxers).
- *
- * @param stream_index index of the stream which is used as time base reference
- * @param min_ts smallest acceptable timestamp
- * @param ts target timestamp
- * @param max_ts largest acceptable timestamp
- * @param flags flags
- * @returns >=0 on success, error code otherwise
- *
- * @NOTE This is part of the new seek API which is still under construction.
- *       Thus do not use this yet. It may change at any time, do not expect
- *       ABI compatibility yet!
- */
-int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
-
-/**
- * Start playing a network-based stream (e.g. RTSP stream) at the
- * current position.
- */
-int av_read_play(AVFormatContext *s);
-
-/**
- * Pause a network-based stream (e.g. RTSP stream).
- *
- * Use av_read_play() to resume it.
- */
-int av_read_pause(AVFormatContext *s);
-
-/**
- * Free a AVFormatContext allocated by av_open_input_stream.
- * @param s context to free
- */
-void av_close_input_stream(AVFormatContext *s);
-
-/**
- * Close a media file (but not its codecs).
- *
- * @param s media file handle
- */
-void av_close_input_file(AVFormatContext *s);
-
-/**
- * Add a new stream to a media file.
- *
- * Can only be called in the read_header() function. If the flag
- * AVFMTCTX_NOHEADER is in the format context, then new streams
- * can be added in read_packet too.
- *
- * @param s media file handle
- * @param id file-format-dependent stream ID
- */
-AVStream *av_new_stream(AVFormatContext *s, int id);
-AVProgram *av_new_program(AVFormatContext *s, int id);
-
-/**
- * Add a new chapter.
- * This function is NOT part of the public API
- * and should ONLY be used by demuxers.
- *
- * @param s media file handle
- * @param id unique ID for this chapter
- * @param start chapter start time in time_base units
- * @param end chapter end time in time_base units
- * @param title chapter title
- *
- * @return AVChapter or NULL on error
- */
-AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base,
-                          int64_t start, int64_t end, const char *title);
-
-/**
- * Set the pts for a given stream.
- *
- * @param s stream
- * @param pts_wrap_bits number of bits effectively used by the pts
- *        (used for wrap control, 33 is the value for MPEG)
- * @param pts_num numerator to convert to seconds (MPEG: 1)
- * @param pts_den denominator to convert to seconds (MPEG: 90000)
- */
-void av_set_pts_info(AVStream *s, int pts_wrap_bits,
-                     int pts_num, int pts_den);
-
-#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
-#define AVSEEK_FLAG_BYTE     2 ///< seeking based on position in bytes
-#define AVSEEK_FLAG_ANY      4 ///< seek to any frame, even non-keyframes
-
-int av_find_default_stream_index(AVFormatContext *s);
-
-/**
- * Gets the index for a specific timestamp.
- * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond
- *                 to the timestamp which is <= the requested one, if backward
- *                 is 0, then it will be >=
- *              if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise
- * @return < 0 if no such timestamp could be found
- */
-int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
-
-/**
- * Ensures the index uses less memory than the maximum specified in
- * AVFormatContext.max_index_size by discarding entries if it grows
- * too large.
- * This function is not part of the public API and should only be called
- * by demuxers.
- */
-void ff_reduce_index(AVFormatContext *s, int stream_index);
-
-/**
- * Add an index entry into a sorted list. Update the entry if the list
- * already contains it.
- *
- * @param timestamp timestamp in the time base of the given stream
- */
-int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
-                       int size, int distance, int flags);
-
-/**
- * Does a binary search using av_index_search_timestamp() and
- * AVCodec.read_timestamp().
- * This is not supposed to be called directly by a user application,
- * but by demuxers.
- * @param target_ts target timestamp in the time base of the given stream
- * @param stream_index stream number
- */
-int av_seek_frame_binary(AVFormatContext *s, int stream_index,
-                         int64_t target_ts, int flags);
-
-/**
- * Updates cur_dts of all streams based on the given timestamp and AVStream.
- *
- * Stream ref_st unchanged, others set cur_dts in their native time base.
- * Only needed for timestamp wrapping or if (dts not set and pts!=dts).
- * @param timestamp new dts expressed in time_base of param ref_st
- * @param ref_st reference stream giving time_base of param timestamp
- */
-void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
-
-/**
- * Does a binary search using read_timestamp().
- * This is not supposed to be called directly by a user application,
- * but by demuxers.
- * @param target_ts target timestamp in the time base of the given stream
- * @param stream_index stream number
- */
-int64_t av_gen_search(AVFormatContext *s, int stream_index,
-                      int64_t target_ts, int64_t pos_min,
-                      int64_t pos_max, int64_t pos_limit,
-                      int64_t ts_min, int64_t ts_max,
-                      int flags, int64_t *ts_ret,
-                      int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
-
-/** media file output */
-int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
-
-/**
- * Allocate the stream private data and write the stream header to an
- * output media file.
- *
- * @param s media file handle
- * @return 0 if OK, AVERROR_xxx on error
- */
-int av_write_header(AVFormatContext *s);
-
-/**
- * Write a packet to an output media file.
- *
- * The packet shall contain one audio or video frame.
- * The packet must be correctly interleaved according to the container
- * specification, if not then av_interleaved_write_frame must be used.
- *
- * @param s media file handle
- * @param pkt The packet, which contains the stream_index, buf/buf_size,
-              dts/pts, ...
- * @return < 0 on error, = 0 if OK, 1 if end of stream wanted
- */
-int av_write_frame(AVFormatContext *s, AVPacket *pkt);
-
-/**
- * Writes a packet to an output media file ensuring correct interleaving.
- *
- * The packet must contain one audio or video frame.
- * If the packets are already correctly interleaved, the application should
- * call av_write_frame() instead as it is slightly faster. It is also important
- * to keep in mind that completely non-interleaved input will need huge amounts
- * of memory to interleave with this, so it is preferable to interleave at the
- * demuxer level.
- *
- * @param s media file handle
- * @param pkt The packet, which contains the stream_index, buf/buf_size,
-              dts/pts, ...
- * @return < 0 on error, = 0 if OK, 1 if end of stream wanted
- */
-int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
-
-/**
- * Interleave a packet per dts in an output media file.
- *
- * Packets with pkt->destruct == av_destruct_packet will be freed inside this
- * function, so they cannot be used after it. Note that calling av_free_packet()
- * on them is still safe.
- *
- * @param s media file handle
- * @param out the interleaved packet will be output here
- * @param in the input packet
- * @param flush 1 if no further packets are available as input and all
- *              remaining packets should be output
- * @return 1 if a packet was output, 0 if no packet could be output,
- *         < 0 if an error occurred
- */
-int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
-                                 AVPacket *pkt, int flush);
-
-/**
- * @brief Write the stream trailer to an output media file and
- *        free the file private data.
- *
- * May only be called after a successful call to av_write_header.
- *
- * @param s media file handle
- * @return 0 if OK, AVERROR_xxx on error
- */
-int av_write_trailer(AVFormatContext *s);
-
-void dump_format(AVFormatContext *ic,
-                 int index,
-                 const char *url,
-                 int is_output);
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-/**
- * Parses width and height out of string str.
- * @deprecated Use av_parse_video_frame_size instead.
- */
-attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr,
-                                          const char *str);
-
-/**
- * Converts framerate from a string to a fraction.
- * @deprecated Use av_parse_video_frame_rate instead.
- */
-attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base,
-                                          const char *arg);
-#endif
-
-/**
- * Parses \p datestr and returns a corresponding number of microseconds.
- * @param datestr String representing a date or a duration.
- * - If a date the syntax is:
- * @code
- *  [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
- * @endcode
- * Time is local time unless Z is appended, in which case it is
- * interpreted as UTC.
- * If the year-month-day part is not specified it takes the current
- * year-month-day.
- * Returns the number of microseconds since 1st of January, 1970 up to
- * the time of the parsed date or INT64_MIN if \p datestr cannot be
- * successfully parsed.
- * - If a duration the syntax is:
- * @code
- *  [-]HH[:MM[:SS[.m...]]]
- *  [-]S+[.m...]
- * @endcode
- * Returns the number of microseconds contained in a time interval
- * with the specified duration or INT64_MIN if \p datestr cannot be
- * successfully parsed.
- * @param duration Flag which tells how to interpret \p datestr, if
- * not zero \p datestr is interpreted as a duration, otherwise as a
- * date.
- */
-int64_t parse_date(const char *datestr, int duration);
-
-/** Gets the current time in microseconds. */
-int64_t av_gettime(void);
-
-/* ffm-specific for ffserver */
-#define FFM_PACKET_SIZE 4096
-int64_t ffm_read_write_index(int fd);
-int ffm_write_write_index(int fd, int64_t pos);
-void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size);
-
-/**
- * Attempts to find a specific tag in a URL.
- *
- * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
- * Return 1 if found.
- */
-int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
-
-/**
- * Returns in 'buf' the path with '%d' replaced by a number.
- *
- * Also handles the '%0nd' format where 'n' is the total number
- * of digits and '%%'.
- *
- * @param buf destination buffer
- * @param buf_size destination buffer size
- * @param path numbered sequence string
- * @param number frame number
- * @return 0 if OK, -1 on format error
- */
-int av_get_frame_filename(char *buf, int buf_size,
-                          const char *path, int number);
-
-/**
- * Check whether filename actually is a numbered sequence generator.
- *
- * @param filename possible numbered sequence string
- * @return 1 if a valid numbered sequence string, 0 otherwise
- */
-int av_filename_number_test(const char *filename);
-
-/**
- * Generate an SDP for an RTP session.
- *
- * @param ac array of AVFormatContexts describing the RTP streams. If the
- *           array is composed by only one context, such context can contain
- *           multiple AVStreams (one AVStream per RTP stream). Otherwise,
- *           all the contexts in the array (an AVCodecContext per RTP stream)
- *           must contain only one AVStream.
- * @param n_files number of AVCodecContexts contained in ac
- * @param buff buffer where the SDP will be stored (must be allocated by
- *             the caller)
- * @param size the size of the buffer
- * @return 0 if OK, AVERROR_xxx on error
- */
-int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size);
-
-#ifdef HAVE_AV_CONFIG_H
-
-void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
-
-#ifdef __GNUC__
-#define dynarray_add(tab, nb_ptr, elem)\
-do {\
-    __typeof__(tab) _tab = (tab);\
-    __typeof__(elem) _elem = (elem);\
-    (void)sizeof(**_tab == _elem); /* check that types are compatible */\
-    ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\
-} while(0)
-#else
-#define dynarray_add(tab, nb_ptr, elem)\
-do {\
-    ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\
-} while(0)
-#endif
-
-time_t mktimegm(struct tm *tm);
-struct tm *brktimegm(time_t secs, struct tm *tm);
-const char *small_strptime(const char *p, const char *fmt,
-                           struct tm *dt);
-
-struct in_addr;
-int resolve_host(struct in_addr *sin_addr, const char *hostname);
-
-void url_split(char *proto, int proto_size,
-               char *authorization, int authorization_size,
-               char *hostname, int hostname_size,
-               int *port_ptr,
-               char *path, int path_size,
-               const char *url);
-
-int match_ext(const char *filename, const char *extensions);
-
-#endif /* HAVE_AV_CONFIG_H */
-
-#endif /* AVFORMAT_AVFORMAT_H */