Added a cdecl for the TAVPacket.destruct procedure.

This fixes the av_free_packet() errors.
Because of this bug, memory was never freed by av_free_packet and other memory areas were corrupted.

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@729 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 695 insertions, 695 deletions

diff --git a/Game/Code/lib/ffmpeg/avformat.pas b/Game/Code/lib/ffmpeg/avformat.pas
index aa74043b..6e30865f 100644
--- a/Game/Code/lib/ffmpeg/avformat.pas
+++ b/Game/Code/lib/ffmpeg/avformat.pas
@@ -1,701 +1,701 @@
-                                                                              (*
- * copyright (c) 2001 Fabrice Bellard
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-                                                                              *)
-
-(* This is a part of Pascal porting of ffmpeg.  Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
-For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
-in the source codes *)
-
-unit avformat;
-
-{$IFDEF FPC}
-  {$IFNDEF win32}
+                                                                              (*

+ * copyright (c) 2001 Fabrice Bellard

+ *

+ * This library 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 of the License, or (at your option) any later version.

+ *

+ * This library 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 this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

+                                                                              *)

+

+(* This is a part of Pascal porting of ffmpeg.  Originally by Victor Zinetz for Delphi and Free Pascal on Windows.

+For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT

+in the source codes *)

+

+unit avformat;

+

+{$IFDEF FPC}

+  {$IFNDEF win32}

   {$LINKLIB libavutil}

-  {$LINKLIB libavformat}
+  {$LINKLIB libavformat}

   {$ENDIF}

-
-  {$MODE DELPHI } (* CAT *)
-  {$PACKENUM 4}    (* every enum type variables uses 4 bytes, CAT *)
-  {$PACKRECORDS C}    (* GCC compatible, Record Packing, CAT *)
-{$ENDIF}
-
-interface
-
-uses
-  avcodec,
-  avio,
-  rational,
-  avutil; (* CAT *)
-
-const
-
-
-{$IFDEF win32}
+

+  {$MODE DELPHI } (* CAT *)

+  {$PACKENUM 4}    (* every enum type variables uses 4 bytes, CAT *)

+  {$PACKRECORDS C}    (* GCC compatible, Record Packing, CAT *)

+{$ENDIF}

+

+interface

+

+uses

+  avcodec,

+  avio,

+  rational,

+  avutil; (* CAT *)

+

+const

+

+

+{$IFDEF win32}

   av__format = 'avformat-50.dll';

 {$ELSE}

   av__format = 'libavformat.so';   // .0d

   //av__format = 'libavformat.51'; (* CAT *)

-{$ENDIF}
-
-  LIBAVUTIL_VERSION_INT   =  ((51 shl 16) + (12 shl 8) + 1);
-  LIBAVUTIL_VERSION       = '51.12.1';
-  LIBAVUTIL_BUILD         = LIBAVUTIL_VERSION_INT;
-
-  MAXINT64 = $7fffffffffffffff;
-  MININT64 = $8000000000000000;
-
-  PKT_FLAG_KEY = $0001;
-
-(*************************************************)
-(* input/output formats *)
-
-  AVPROBE_SCORE_MAX   = 100;   ///< max score, half of that is used for file extension based detection
-  AVPROBE_PADDING_SIZE = 32;   ///< extra allocated bytes at the end of the probe buffer
-
-//! demuxer will use url_fopen, no opened file should be provided by the caller
-  AVFMT_NOFILE = $0001;
-  AVFMT_NEEDNUMBER = $0002; (**< needs '%d' in filename *)
-  AVFMT_SHOW_IDS = $0008; (**< show format stream IDs numbers *)
-  AVFMT_RAWPICTURE = $0020; (**< format wants AVPicture structure for
-                                      raw picture data *)
-  AVFMT_GLOBALHEADER = $0040; (**< format wants global header *)
-  AVFMT_NOTIMESTAMPS = $0080; (**< format does not need / have any timestamps *)
-  AVFMT_GENERIC_INDEX = $0100; (**< use generic index building code *)
-
-  AVINDEX_KEYFRAME = $0001;
-
-  MAX_REORDER_DELAY = 4;
-
-  AVFMTCTX_NOHEADER = $0001; (**< signal that no header is present
-                                         (streams are added dynamically) *)
-  MAX_STREAMS = 20;
-  AVFMT_NOOUTPUTLOOP = -1;
-  AVFMT_INFINITEOUTPUTLOOP = 0;
-  AVFMT_FLAG_GENPTS = $0001; ///< generate pts if missing even if it requires parsing future frames
-  AVFMT_FLAG_IGNIDX = $0002; ///< ignore index
-  AVFMT_FLAG_NONBLOCK = $0004; ///< do not block when reading packets from input
-
-type
-  HFILE = THandle; /// (* CAT *)
-  int = integer;
-
-  PAVPacket = ^TAVPacket;
-  PAVImageFormat = ^TAVImageFormat;
-  PAVFormatContext = ^TAVFormatContext;
-  PAVFormatParameters = ^TAVFormatParameters;
-  PAVOutputFormat = ^TAVOutputFormat;
-  PAVProbeData = ^TAVProbeData;
-  PAVInputFormat = ^TAVInputFormat;
-  PAVIndexEntry = ^TAVIndexEntry;
-  PAVStream = ^TAVStream;
-  PAVPacketList = ^TAVPacketList;
-  PAVImageInfo = ^TAVImageInfo;
-
-  TAVPacket = record {56}
-    pts: int64;                            ///< presentation time stamp in time_base units
-    dts: int64;                            ///< decompression time stamp in time_base units
-    data: PByte;
-    size: integer;
-    stream_index: integer;
-    flags: integer;
-    duration: integer;                         ///< presentation duration in time_base units (0 if not available)
-    destruct: procedure (p: PAVPacket);  (* This cannot be var : TAVPacket. 
-										because TAVPacket is not completely defined yet *)
-    priv: pointer;
-    pos: int64                            ///< byte position in stream, -1 if unknown
-  end;
-
-(*************************************************)
-(* fractional numbers for exact pts handling *)
-
-(* the exact value of the fractional number is: 'val + num / den'. num
-   is assumed to be such as 0 <= num < den *)
-  PAVFrac = ^TAVFrac;
-  TAVFrac = record
-    val, num, den: int64;
-  end;
-
-(* this structure contains the data a format has to probe a file *)
-  TAVProbeData = record {12}
-    filename: pchar;
-    buf: pchar;
-    buf_size: integer;
-  end;
-
-  TAVFormatParameters = record {56}
-    time_base: TAVRational; (* 8 bytes *)
-    sample_rate: integer;
-    channels: integer;
-    width: integer;
-    height: integer;
-    pix_fmt: TAVPixelFormat;
-{    image_format: PAVImageFormat; (* 4 bytes *)}  (* CAT#3 *)
-    channel: integer; (* used to select dv channel *)
-    device: pchar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *)
-    standard: pchar; (* tv standard, NTSC, PAL, SECAM *)
-//    int mpeg2ts_raw:1;  (* force raw MPEG2 transport stream output, if possible *)
-//    int mpeg2ts_compute_pcr:1; (* compute exact PCR for each transport
-//                                  stream packet (only meaningful if
-//                                  mpeg2ts_raw is TRUE *)
-//    int initial_pause:1;       (* do not begin to play the stream
-//                                  immediately (RTSP only) *)
-//    int prealloced_context:1;
-    dummy: byte;
-    video_codec_id: TCodecID;
-    audio_codec_id: TCodecID;
-  end;
-
-  TAVOutputFormat = record {56}
-    name: pchar;
-    long_name: pchar;
-    mime_type: pchar;
-    extensions: pchar; (* comma separated extensions *)
-    (* size of private data so that it can be allocated in the wrapper *)
-    priv_data_size: integer;
-    (* output support *)
-    audio_codec: TCodecID; (* default audio codec *)
-    video_codec: TCodecID; (* default video codec *)
-    write_header: function (c: PAVFormatContext): integer; cdecl;
-    write_packet: function (c: PAVFormatContext; var pkt: TAVPacket): integer; cdecl; (* CAT#2 *)
-    write_trailer: function (c: PAVFormatContext): integer; cdecl;
-    (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER *)
-    flags: integer;
-    (* currently only used to set pixel format if not YUV420P *)
-    set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): integer; cdecl;
-    interleave_packet: function (s: PAVFormatContext; _out: PAVPacket; _in: PAVPacket; flush: integer): integer; cdecl;
-
-    (**
-     * list of supported codec_id-codec_tag pairs, ordered by "better choice first"
-     * the arrays are all CODEC_ID_NONE terminated
-     *)
-    //const struct AVCodecTag **codec_tag;
-
-    (* private fields *)
-    next: PAVOutputFormat;
-  end;
-
-  TAVInputFormat = record {60}
-    name: pchar;
-    long_name: pchar;
-    (* size of private data so that it can be allocated in the wrapper *)
-    priv_data_size: integer;
-    (* tell if a given file has a chance of being parsing by this format *)
-    read_probe: function (p: PAVProbeData): integer; cdecl;
-    (* read the format header and initialize the AVFormatContext
-       structure. Return 0 if OK. 'ap' if non NULL contains
-       additionnal paramters. Only used in raw format right
-       now. 'av_new_stream' should be called to create new streams.  *)
-    read_header: function (c: PAVFormatContext; ap: PAVFormatParameters): integer; cdecl;
-    (* 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. *)
-    read_packet: function (c: PAVFormatContext; var pkt: TAVPacket): integer; cdecl;
-    (* close the stream. The AVFormatContext and AVStreams are not
-       freed by this function *)
-    read_close: function (c: PAVFormatContext): integer; cdecl;
-    (*** 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     *)
-    read_seek: function (c: PAVFormatContext; stream_index: integer;
-                  timestamp: int64; flags: integer): integer; cdecl;
-    (*** gets the next timestamp in AV_TIME_BASE units.     *)
-    read_timestamp: function (s: PAVFormatContext; stream_index: integer;
-                              pos: pint64; pos_limit: int64): integer; cdecl;
-    (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER *)
-    flags: integer;
-    (* if extensions are defined, then no probe is done. You should
-       usually not use extension format guessing because it is not
-       reliable enough *)
-    extensions: pchar;
-    (* general purpose read only value that the format can use *)
-    value: integer;
-
-    (* start/resume playing - only meaningful if using a network based format (RTSP) *)
-    read_play: function (c: PAVFormatContext): integer; cdecl;
-
-    (* pause playing - only meaningful if using a network based format  (RTSP) *)
-    read_pause: function (c: PAVFormatContext): integer; cdecl;
-
-    //const struct AVCodecTag **codec_tag;
-
-    (* private fields *)
-    next: PAVInputFormat;
-  end;
-
-  TAVStreamParseType = (
-    AVSTREAM_PARSE_NONE,
-    AVSTREAM_PARSE_FULL,       (**< full parsing and repack *)
-    AVSTREAM_PARSE_HEADERS,    (**< only parse headers, don't repack *)
-    AVSTREAM_PARSE_TIMESTAMPS  (**< full parsing and interpolation of timestamps for frames not starting on packet boundary *)
-    );
-
-  TAVIndexEntry = record {24}
-    pos: int64;
-    timestamp: int64;
-(* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed *)
-    flags: integer;
-//    int flags:2;
-//    int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
-    min_distance: integer;         (* min distance between this and the previous keyframe, used to avoid unneeded searching *)
-  end;
-
-  TAVStream = record {168}
-    index: integer;    (* stream index in AVFormatContext *) {4-4}
-    id: integer;       (* format specific stream id *)       {4-8}
-    codec: PAVCodecContext; (* codec context *)              {4-12}
-    (*** real base frame rate of the stream.
-     * for example if the timebase is 1/90000 and all frames have either
-     * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1     *)
-    r_frame_rate: TAVRational;                               {4*2=8-20}
-    priv_data: pointer;                                      {4-24}
-    (* internal data used in av_find_stream_info() *)
-    codec_info_duration: int64; (* #if LIBAVFORMAT_VERSION_INT < (52<<16) *)  {8-32}
-    codec_info_nb_frames: integer; (* #if LIBAVFORMAT_VERSION_INT < (52<<16) *) {4-38}
-    (* encoding: PTS generation when outputing stream *)
-    pts: TAVFrac;                                            {8*3=24-62}
-
-    (*** this is the fundamental unit of time (in seconds) in terms
-     * of which frame timestamps are represented. for fixed-fps content,
-     * timebase should be 1/framerate and timestamp increments should be
-     * identically 1.     *)
-    time_base: TAVRational;                                  {4*2=8-70}
-    pts_wrap_bits: integer; (* number of bits in pts (used for wrapping control) *) {4-74}
-    (* ffmpeg.c private use *)
-    stream_copy: integer; (* if TRUE, just copy stream *)  {4-78}
-    discard: TAVDiscard; ///< selects which packets can be discarded at will and dont need to be demuxed {4-82}
-    //FIXME move stuff to a flags field?
-    (* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
-     * MN:dunno if thats the right place, for it *)
-    quality: single; {4-86}
-    (* decoding: position of the first frame of the component, in AV_TIME_BASE fractional seconds. *)
-    start_time: int64; {8-92}
-    (* decoding: duration of the stream, in stream time base. *)
-    duration: int64; {8-100}
-
-    language: array [0..3] of char; (* ISO 639 3-letter language code (empty string if undefined) *)(* 101 th byte - 1 base *) {4-104}
-
-    (* av_read_frame() support *)
-    need_parsing: TAVStreamParseType;//CAT#3           ///< 1->full parsing needed, 2->only parse headers dont repack
-    parser: PAVCodecParserContext;
-
-    cur_dts: int64;
-    last_IP_duration: integer;
-    last_IP_pts: int64;
-    (* av_seek_frame() support *)
-    index_entries: PAVIndexEntry; (* only used if the format does not support seeking natively *)
-    nb_index_entries: integer;
-    index_entries_allocated_size: cardinal; (* CAT#3 *)
-
-    nb_frames: int64;                 ///< number of frames in this stream if known or 0
-    pts_buffer: array [0..MAX_REORDER_DELAY] of int64
-  end;
-
-(* format I/O context *)
-  TAVFormatContext = record {3960}
-    av_class: PAVClass; (* set by av_alloc_format_context *)
-    (* can only be iformat or oformat, not both at the same time *)
-    iformat: PAVInputFormat;
-    oformat: PAVOutputFormat;
-    priv_data: pointer;
-    pb: TByteIOContext;
-    nb_streams: cardinal;  (* CAT#3 *)
-    streams: array [0..MAX_STREAMS - 1] of PAVStream;
-    filename: array [0..1023] of char; (* input or output filename *)
-    (* stream info *)
-    timestamp: int64;
-    title: array [0..511] of char;
-    author: array [0..511] of char;
-    copyright: array [0..511] of char;
-    comment: array [0..511] of char;
-    album: array [0..511] of char;
-    year: integer;  (* ID3 year, 0 if none *)
-    track: integer; (* track number, 0 if none *)
-    genre: array [0..31] of char; (* ID3 genre *)
-
-    ctx_flags: integer; (* 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 *)
-    packet_buffer: PAVPacketList;
-
-    (* 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.  *)
-    start_time: int64;
-    (* decoding: duration of the stream, in AV_TIME_BASE fractional
-       seconds. NEVER set this value directly: it is deduced from the
-       AVStream values.  *)
-    duration: int64;
-    (* decoding: total file size. 0 if unknown *)
-    file_size: int64;
-    (* 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. *)
-    bit_rate: integer;
-
-    (* av_read_frame() support *)
-    cur_st: PAVStream;
-    cur_ptr: pbyte;
-    cur_len: integer;
-    cur_pkt: TAVPacket;
-
-    (* av_seek_frame() support *)
-    data_offset: int64; (* offset of the first packet *)
-    index_built: integer;
-
-    mux_rate: integer;
-    packet_size: integer;
-    preload: integer;
-    max_delay: integer;
-
-    (* number of times to loop output in formats that support it *)
-    loop_output: integer;
-
-    flags: integer;
-    loop_input: integer;
-    (* decoding: size of data to probe; encoding unused *)
-    probesize: cardinal;
-
-    (**
-     * maximum duration in AV_TIME_BASE units over which the input should be analyzed in av_find_stream_info()
-     *)
-    max_analyze_duration: integer;
-
-    key: pbyte;
-    keylen : integer
-  end;
-
-  TAVPacketList = record {64}
-    pkt: TAVPacket;
-    next: PAVPacketList;
-  end;
-
-(* still image support *)
-  PAVInputImageContext = pointer; // attribute_deprecated;
-//  PAVInputImageContext = pointer; //AVInputImageContext attribute_deprecated;
-
-(* still image support *)
-  TAVImageInfo = record {48}
-    pix_fmt: TAVPixelFormat; (* requested pixel format *)
-    width: integer; (* requested width *)
-    height: integer; (* requested height *)
-    interleaved: integer; (* image is interleaved (e.g. interleaved GIF) *)
-    pict: TAVPicture; (* returned allocated image *)
-  end;
-
-  TAVImageFormat = record {32}
-    name: pchar;
-    extensions: pchar;
-    (* tell if a given file has a chance of being parsing by this format *)
-    img_probe: function (d: PAVProbeData): integer; cdecl;
-    (* read a whole image. 'alloc_cb' is called when the image size is
-       known so that the caller can allocate the image. If 'allo_cb'
-       returns non zero, then the parsing is aborted. Return '0' if
-       OK. *)
-    img_read: function (b: PByteIOContext; alloc_cb: pointer; ptr: pointer): integer; cdecl;
-    (* write the image *)
-    supported_pixel_formats: integer; (* mask of supported formats for output *)
-    img_write: function (b: PByteIOContext; i: PAVImageInfo): integer; cdecl;
-    flags: integer;
-    next: PAVImageFormat;
-  end;
-
-procedure av_destruct_packet_nofree (var pkt: TAVPacket); (* CAT#2 *)
-  cdecl; external av__format;
-procedure av_destruct_packet (var pkt: TAVPacket); (* CAT#2 *)
-  cdecl; external av__format;
-
-(* initialize optional fields of a packet *)
-procedure av_init_packet (var pkt: TAVPacket);  (* CAT#2 *)
-
-function av_new_packet(var pkt: TAVPacket; size: integer): integer; (* CAT#2 *)
-  cdecl; external av__format;
-
-function av_get_packet (s: PByteIOContext; var pkt: TAVPacket; size: integer): integer; (* CAT#2 *)
-  cdecl; external av__format;
-
-function av_dup_packet (pkt: PAVPacket): integer;
-  cdecl; external av__format;
-
-(** * Free a packet
- *
- * @param pkt packet to free *)
-procedure av_free_packet (var pkt: TAVPacket); (* CAT#2 *)
-
-procedure av_register_image_format (img_fmt: PAVImageFormat);
-    cdecl; external av__format;
-
-function av_probe_image_format (pd: PAVProbeData): PAVImageFormat;
-    cdecl; external av__format;
-
-function guess_image_format (filename: pchar): PAVImageFormat;
-    cdecl; external av__format;
-
-function av_guess_image2_codec(filename: pchar): TCodecID;
-    cdecl; external av__format;
-
-function av_read_image (pb: PByteIOContext; filename: pchar;
-                  fmt: PAVImageFormat;
-                  alloc_cb: pointer; opaque: pointer): integer;
-    cdecl; external av__format;
-
-function av_write_image(pb: PByteIOContext; fmt: PAVImageFormat; img: PAVImageInfo): integer;
-    cdecl; external av__format;
-
-(* XXX: use automatic init with either ELF sections or C file parser *)
-(* modules *)
-
-//#include "rtp.h"
-
-//#include "rtsp.h"
-
-(* utils.c *)
-  procedure av_register_input_format (format: PAVInputFormat);
-    cdecl; external av__format;
-
-  procedure av_register_output_format (format: PAVOutputFormat);
-    cdecl; external av__format;
-
-  function guess_stream_format (short_name: pchar; filename: pchar; mime_type: pchar): PAVOutputFormat;
-    cdecl; external av__format;
-
-  function guess_format(short_name: pchar; filename: pchar; mime_type: pchar): PAVOutputFormat;
-    cdecl; external av__format;
-
-  function av_guess_codec(fmt: PAVOutputFormat; short_name: pchar;
-                          filename: pchar; mime_type: pchar; _type: TCodecType): TCodecID;
-    cdecl; external av__format;
-
-  procedure av_hex_dump (f: HFILE; buf: pchar; size: integer);
-    cdecl; external av__format;
-  procedure av_pkt_dump(f: HFILE; var pkt: TAVPacket; dump_payload: integer); (* CAT#2 *)
-    cdecl; external av__format;
-
-  procedure av_register_all ();
-    cdecl; external av__format;
-
-
-(* media file input *)
-  function av_find_input_format (short_name: pchar): PAVInputFormat;
-    cdecl; external av__format;
-  function av_probe_input_format (pd: PAVProbeData; is_opened: integer): PAVInputFormat;
-    cdecl; external av__format;
-  function av_open_input_stream (ic_ptr: PAVFormatContext;
-                         pb: PByteIOContext; filename: pchar;
-                         fmt: PAVInputFormat; ap: PAVFormatParameters): integer;
-    cdecl; external av__format;
-(*** Open a media file as input. The codec 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 additionnal parameters needed when opening the file (NULL if default)
- * @return 0 if OK. AVERROR_xxx otherwise. *)
-
-  function av_open_input_file (var ic_ptr: PAVFormatContext; filename: pchar;
-                       fmt: PAVInputFormat; buf_size: integer;
-                       ap: PAVFormatParameters): integer;
-    cdecl; external av__format;
-
-  (* no av_open for output, so applications will need this: *)
-  function av_alloc_format_context (): PAVFormatContext;
-    cdecl; external av__format;
-
-const
-  AVERROR_UNKNOWN     =(-1);  (* unknown error *)
-  AVERROR_IO          =(-2);  (* i/o error *)
-  AVERROR_NUMEXPECTED =(-3);  (* number syntax expected in filename *)
-  AVERROR_INVALIDDATA =(-4);  (* invalid data found *)
-  AVERROR_NOMEM       =(-5);  (* not enough memory *)
-  AVERROR_NOFMT       =(-6);  (* unknown format *)
-  AVERROR_NOTSUPP     =(-7);  (* operation not supported *)
-
-(*** Read the beginning of a media file to get stream information. This
- * is useful for file formats with no headers such as MPEG. This
- * function also compute the real frame rate in case of mpeg2 repeat
- * frame mode.
- *
- * @param ic media file handle
- * @return >=0 if OK. AVERROR_xxx if error.
- * @todo let user decide somehow what information is needed so we dont waste time geting stuff the user doesnt need *)
-
-  function av_find_stream_info (ic: PAVFormatContext): integer;
-    cdecl; external av__format;
-  function av_read_packet (s: PAVFormatContext; var pkt: TAVPacket): integer; (* CAT#2 *)
-    cdecl; external av__format;
-(*** 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 AV_TIME_BASE unit (and guessed if the format cannot
- * provided 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 if error or end of file. *)
-
-  function av_read_frame (s: PAVFormatContext; var pkt: TAVPacket): integer; (* CAT#2 *)
-    cdecl; external av__format;
-  function av_seek_frame (s: PAVFormatContext; stream_index: integer; timestamp: int64; flags: integer): integer;
-    cdecl; external av__format;
-  function av_read_play (s: PAVFormatContext): integer;
-    cdecl; external av__format;
-  function av_read_pause (s: PAVFormatContext): integer;
-    cdecl; external av__format;
-  procedure av_close_input_file (s: PAVFormatContext);
-    cdecl; external av__format;
-  function av_new_stream (s: PAVFormatContext; id: integer): PAVStream;
-    cdecl; external av__format;
-  procedure av_set_pts_info (s: PAVStream; pts_wrap_bits: integer;
-                     pts_num: integer; pts_den: integer);
-    cdecl; external av__format;
-
-const
-  AVSEEK_FLAG_BACKWARD =1; ///< seek backward
-  AVSEEK_FLAG_BYTE     =2; ///< seeking based on position in bytes
-  AVSEEK_FLAG_ANY      =4; ///< seek to any frame, even non keyframes
-
-  function av_find_default_stream_index (s: PAVFormatContext): integer;
-    cdecl; external av__format;
-  function av_index_search_timestamp (st: PAVStream; timestamp: int64; flags: integer): integer;
-    cdecl; external av__format;
-  function av_add_index_entry (st: PAVStream; pos: int64; timestamp: int64;
-                    distance: integer; flags: integer): integer;
-    cdecl; external av__format;
-  function av_seek_frame_binary (s: PAVFormatContext; stream_index: integer;
-                   target_ts: int64; flags: integer): integer;
-    cdecl; external av__format;
-
-  procedure av_update_cur_dts (s: PAVFormatContext; ref_st: PAVStream;
-                               timestamp: int64);
-    cdecl; external av__format;
-
-(* media file output *)
-  function av_set_parameters (s: PAVFormatContext; ap: PAVFormatParameters): integer;
-    cdecl; external av__format;
-
-  function av_write_header (s: PAVFormatContext): integer;
-    cdecl; external av__format;
-
-  function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): integer;
-    cdecl; external av__format; (* CAT#2 *)
-
-  function av_interleaved_write_frame (s: PAVFormatContext; var pkt: TAVPacket): integer;
-    cdecl; external av__format; (* CAT#2 *)
-
-  function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket;
-                                        pkt: PAVPacket; flush: integer): integer;
-    cdecl; external av__format;
-  function av_write_trailer(s: pAVFormatContext): integer;
-    cdecl; external av__format;
-
-  procedure dump_format(ic: PAVFormatContext; index: integer; url: pchar;
-                 is_output: integer);
-    cdecl; external av__format;
-
-  function parse_image_size(width_ptr: PInteger; height_ptr: PInteger; str: pchar): integer;
-    cdecl; external av__format;
-  function parse_frame_rate (frame_rate: PInteger; frame_rate_base: PInteger; arg: pchar): integer;
-    cdecl; external av__format;
-  function parse_date(datestr: pchar; duration: integer): int64;
-    cdecl; external av__format;
-  function av_gettime (): int64;
-    cdecl; external av__format;
-
-(* ffm specific for ffserver *)
-const
-  FFM_PACKET_SIZE = 4096;
-
-  function ffm_read_write_index (fd: integer): int64;
-    cdecl; external av__format;
-
-  procedure ffm_write_write_index(fd: integer; pos: int64);
-    cdecl; external av__format;
-
-  procedure ffm_set_write_index (s: PAVFormatContext; pos: int64; file_size: int64);
-    cdecl; external av__format;
-
-  function find_info_tag (arg: pchar; arg_size: integer; tag1: pchar; info: pchar): integer;
-    cdecl; external av__format;
-
-  function get_frame_filename(buf: pchar; buf_size: integer;
-                       path: pchar; number: integer): integer;
-    cdecl; external av__format;
-  function filename_number_test (filename: pchar): integer;
-    cdecl; external av__format;
-
-
-(* grab specific *)
-  function video_grab_init (): integer;
-    cdecl; external av__format;
-  function audio_init (): integer;
-    cdecl; external av__format;
-
-(* DV1394 *)
-  function dv1394_init (): integer;
-    cdecl; external av__format;
-  function dc1394_init (): integer;
-    cdecl; external av__format;
-
-  function strstart(str: pchar; val: pchar; ptr: PPointer): integer;
-    cdecl; external av__format;
-  function stristart(str: pchar; val: pchar; ptr: PPointer): integer;
-    cdecl; external av__format;
-  procedure pstrcpy(buf: pchar; buf_size: integer; str: pchar);
-    cdecl; external av__format;
-  function pstrcat(buf: pchar; buf_size: integer; s: pchar): pchar;
-    cdecl; external av__format;
-
-  procedure __dynarray_add (tab_ptr: PPointer; nb_ptr: PInteger; elem: cardinal);
-    cdecl; external av__format;
-
-
-implementation
-
-procedure av_init_packet (var pkt: TAVPacket);  (* CAT#2 + bug fix *)
-begin
-  with pkt do begin
-    pts   := AV_NOPTS_VALUE;
-    dts   := AV_NOPTS_VALUE;
-    pos   := -1;
-    duration := 0;
-    flags := 0;
-    stream_index := 0;
-    destruct := @av_destruct_packet_nofree
-  end
-end;
-
-procedure av_free_packet (var pkt: TAVPacket); (* CAT#2 *)
-begin
-  if @pkt.destruct <> nil then pkt.destruct (@pkt)
-{  if (pkt <> nil) and (@pkt^.destruct <> nil) then
-    pkt^.destruct (pkt)}
-end;
-
-end.
+{$ENDIF}

+

+  LIBAVUTIL_VERSION_INT   =  ((51 shl 16) + (12 shl 8) + 1);

+  LIBAVUTIL_VERSION       = '51.12.1';

+  LIBAVUTIL_BUILD         = LIBAVUTIL_VERSION_INT;

+

+  MAXINT64 = $7fffffffffffffff;

+  MININT64 = $8000000000000000;

+

+  PKT_FLAG_KEY = $0001;

+

+(*************************************************)

+(* input/output formats *)

+

+  AVPROBE_SCORE_MAX   = 100;   ///< max score, half of that is used for file extension based detection

+  AVPROBE_PADDING_SIZE = 32;   ///< extra allocated bytes at the end of the probe buffer

+

+//! demuxer will use url_fopen, no opened file should be provided by the caller

+  AVFMT_NOFILE = $0001;

+  AVFMT_NEEDNUMBER = $0002; (**< needs '%d' in filename *)

+  AVFMT_SHOW_IDS = $0008; (**< show format stream IDs numbers *)

+  AVFMT_RAWPICTURE = $0020; (**< format wants AVPicture structure for

+                                      raw picture data *)

+  AVFMT_GLOBALHEADER = $0040; (**< format wants global header *)

+  AVFMT_NOTIMESTAMPS = $0080; (**< format does not need / have any timestamps *)

+  AVFMT_GENERIC_INDEX = $0100; (**< use generic index building code *)

+

+  AVINDEX_KEYFRAME = $0001;

+

+  MAX_REORDER_DELAY = 4;

+

+  AVFMTCTX_NOHEADER = $0001; (**< signal that no header is present

+                                         (streams are added dynamically) *)

+  MAX_STREAMS = 20;

+  AVFMT_NOOUTPUTLOOP = -1;

+  AVFMT_INFINITEOUTPUTLOOP = 0;

+  AVFMT_FLAG_GENPTS = $0001; ///< generate pts if missing even if it requires parsing future frames

+  AVFMT_FLAG_IGNIDX = $0002; ///< ignore index

+  AVFMT_FLAG_NONBLOCK = $0004; ///< do not block when reading packets from input

+

+type

+  HFILE = THandle; /// (* CAT *)

+  int = integer;

+

+  PAVPacket = ^TAVPacket;

+  PAVImageFormat = ^TAVImageFormat;

+  PAVFormatContext = ^TAVFormatContext;

+  PAVFormatParameters = ^TAVFormatParameters;

+  PAVOutputFormat = ^TAVOutputFormat;

+  PAVProbeData = ^TAVProbeData;

+  PAVInputFormat = ^TAVInputFormat;

+  PAVIndexEntry = ^TAVIndexEntry;

+  PAVStream = ^TAVStream;

+  PAVPacketList = ^TAVPacketList;

+  PAVImageInfo = ^TAVImageInfo;

+

+  TAVPacket = record {56}

+    pts: int64;                            ///< presentation time stamp in time_base units

+    dts: int64;                            ///< decompression time stamp in time_base units

+    data: PByte;

+    size: integer;

+    stream_index: integer;

+    flags: integer;

+    duration: integer;                         ///< presentation duration in time_base units (0 if not available)

+    destruct: procedure (p: PAVPacket); cdecl; (* This cannot be var : TAVPacket. 

+										because TAVPacket is not completely defined yet *)

+    priv: pointer;

+    pos: int64                            ///< byte position in stream, -1 if unknown

+  end;

+

+(*************************************************)

+(* fractional numbers for exact pts handling *)

+

+(* the exact value of the fractional number is: 'val + num / den'. num

+   is assumed to be such as 0 <= num < den *)

+  PAVFrac = ^TAVFrac;

+  TAVFrac = record

+    val, num, den: int64;

+  end;

+

+(* this structure contains the data a format has to probe a file *)

+  TAVProbeData = record {12}

+    filename: pchar;

+    buf: pchar;

+    buf_size: integer;

+  end;

+

+  TAVFormatParameters = record {56}

+    time_base: TAVRational; (* 8 bytes *)

+    sample_rate: integer;

+    channels: integer;

+    width: integer;

+    height: integer;

+    pix_fmt: TAVPixelFormat;

+{    image_format: PAVImageFormat; (* 4 bytes *)}  (* CAT#3 *)

+    channel: integer; (* used to select dv channel *)

+    device: pchar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *)

+    standard: pchar; (* tv standard, NTSC, PAL, SECAM *)

+//    int mpeg2ts_raw:1;  (* force raw MPEG2 transport stream output, if possible *)

+//    int mpeg2ts_compute_pcr:1; (* compute exact PCR for each transport

+//                                  stream packet (only meaningful if

+//                                  mpeg2ts_raw is TRUE *)

+//    int initial_pause:1;       (* do not begin to play the stream

+//                                  immediately (RTSP only) *)

+//    int prealloced_context:1;

+    dummy: byte;

+    video_codec_id: TCodecID;

+    audio_codec_id: TCodecID;

+  end;

+

+  TAVOutputFormat = record {56}

+    name: pchar;

+    long_name: pchar;

+    mime_type: pchar;

+    extensions: pchar; (* comma separated extensions *)

+    (* size of private data so that it can be allocated in the wrapper *)

+    priv_data_size: integer;

+    (* output support *)

+    audio_codec: TCodecID; (* default audio codec *)

+    video_codec: TCodecID; (* default video codec *)

+    write_header: function (c: PAVFormatContext): integer; cdecl;

+    write_packet: function (c: PAVFormatContext; var pkt: TAVPacket): integer; cdecl; (* CAT#2 *)

+    write_trailer: function (c: PAVFormatContext): integer; cdecl;

+    (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER *)

+    flags: integer;

+    (* currently only used to set pixel format if not YUV420P *)

+    set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): integer; cdecl;

+    interleave_packet: function (s: PAVFormatContext; _out: PAVPacket; _in: PAVPacket; flush: integer): integer; cdecl;

+

+    (**

+     * list of supported codec_id-codec_tag pairs, ordered by "better choice first"

+     * the arrays are all CODEC_ID_NONE terminated

+     *)

+    //const struct AVCodecTag **codec_tag;

+

+    (* private fields *)

+    next: PAVOutputFormat;

+  end;

+

+  TAVInputFormat = record {60}

+    name: pchar;

+    long_name: pchar;

+    (* size of private data so that it can be allocated in the wrapper *)

+    priv_data_size: integer;

+    (* tell if a given file has a chance of being parsing by this format *)

+    read_probe: function (p: PAVProbeData): integer; cdecl;

+    (* read the format header and initialize the AVFormatContext

+       structure. Return 0 if OK. 'ap' if non NULL contains

+       additionnal paramters. Only used in raw format right

+       now. 'av_new_stream' should be called to create new streams.  *)

+    read_header: function (c: PAVFormatContext; ap: PAVFormatParameters): integer; cdecl;

+    (* 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. *)

+    read_packet: function (c: PAVFormatContext; var pkt: TAVPacket): integer; cdecl;

+    (* close the stream. The AVFormatContext and AVStreams are not

+       freed by this function *)

+    read_close: function (c: PAVFormatContext): integer; cdecl;

+    (*** 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     *)

+    read_seek: function (c: PAVFormatContext; stream_index: integer;

+                  timestamp: int64; flags: integer): integer; cdecl;

+    (*** gets the next timestamp in AV_TIME_BASE units.     *)

+    read_timestamp: function (s: PAVFormatContext; stream_index: integer;

+                              pos: pint64; pos_limit: int64): integer; cdecl;

+    (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER *)

+    flags: integer;

+    (* if extensions are defined, then no probe is done. You should

+       usually not use extension format guessing because it is not

+       reliable enough *)

+    extensions: pchar;

+    (* general purpose read only value that the format can use *)

+    value: integer;

+

+    (* start/resume playing - only meaningful if using a network based format (RTSP) *)

+    read_play: function (c: PAVFormatContext): integer; cdecl;

+

+    (* pause playing - only meaningful if using a network based format  (RTSP) *)

+    read_pause: function (c: PAVFormatContext): integer; cdecl;

+

+    //const struct AVCodecTag **codec_tag;

+

+    (* private fields *)

+    next: PAVInputFormat;

+  end;

+

+  TAVStreamParseType = (

+    AVSTREAM_PARSE_NONE,

+    AVSTREAM_PARSE_FULL,       (**< full parsing and repack *)

+    AVSTREAM_PARSE_HEADERS,    (**< only parse headers, don't repack *)

+    AVSTREAM_PARSE_TIMESTAMPS  (**< full parsing and interpolation of timestamps for frames not starting on packet boundary *)

+    );

+

+  TAVIndexEntry = record {24}

+    pos: int64;

+    timestamp: int64;

+(* the following 2 flags indicate that the next/prev keyframe is known, and scaning for it isnt needed *)

+    flags: integer;

+//    int flags:2;

+//    int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).

+    min_distance: integer;         (* min distance between this and the previous keyframe, used to avoid unneeded searching *)

+  end;

+

+  TAVStream = record {168}

+    index: integer;    (* stream index in AVFormatContext *) {4-4}

+    id: integer;       (* format specific stream id *)       {4-8}

+    codec: PAVCodecContext; (* codec context *)              {4-12}

+    (*** real base frame rate of the stream.

+     * for example if the timebase is 1/90000 and all frames have either

+     * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1     *)

+    r_frame_rate: TAVRational;                               {4*2=8-20}

+    priv_data: pointer;                                      {4-24}

+    (* internal data used in av_find_stream_info() *)

+    codec_info_duration: int64; (* #if LIBAVFORMAT_VERSION_INT < (52<<16) *)  {8-32}

+    codec_info_nb_frames: integer; (* #if LIBAVFORMAT_VERSION_INT < (52<<16) *) {4-38}

+    (* encoding: PTS generation when outputing stream *)

+    pts: TAVFrac;                                            {8*3=24-62}

+

+    (*** this is the fundamental unit of time (in seconds) in terms

+     * of which frame timestamps are represented. for fixed-fps content,

+     * timebase should be 1/framerate and timestamp increments should be

+     * identically 1.     *)

+    time_base: TAVRational;                                  {4*2=8-70}

+    pts_wrap_bits: integer; (* number of bits in pts (used for wrapping control) *) {4-74}

+    (* ffmpeg.c private use *)

+    stream_copy: integer; (* if TRUE, just copy stream *)  {4-78}

+    discard: TAVDiscard; ///< selects which packets can be discarded at will and dont need to be demuxed {4-82}

+    //FIXME move stuff to a flags field?

+    (* quality, as it has been removed from AVCodecContext and put in AVVideoFrame

+     * MN:dunno if thats the right place, for it *)

+    quality: single; {4-86}

+    (* decoding: position of the first frame of the component, in AV_TIME_BASE fractional seconds. *)

+    start_time: int64; {8-92}

+    (* decoding: duration of the stream, in stream time base. *)

+    duration: int64; {8-100}

+

+    language: array [0..3] of char; (* ISO 639 3-letter language code (empty string if undefined) *)(* 101 th byte - 1 base *) {4-104}

+

+    (* av_read_frame() support *)

+    need_parsing: TAVStreamParseType;//CAT#3           ///< 1->full parsing needed, 2->only parse headers dont repack

+    parser: PAVCodecParserContext;

+

+    cur_dts: int64;

+    last_IP_duration: integer;

+    last_IP_pts: int64;

+    (* av_seek_frame() support *)

+    index_entries: PAVIndexEntry; (* only used if the format does not support seeking natively *)

+    nb_index_entries: integer;

+    index_entries_allocated_size: cardinal; (* CAT#3 *)

+

+    nb_frames: int64;                 ///< number of frames in this stream if known or 0

+    pts_buffer: array [0..MAX_REORDER_DELAY] of int64

+  end;

+

+(* format I/O context *)

+  TAVFormatContext = record {3960}

+    av_class: PAVClass; (* set by av_alloc_format_context *)

+    (* can only be iformat or oformat, not both at the same time *)

+    iformat: PAVInputFormat;

+    oformat: PAVOutputFormat;

+    priv_data: pointer;

+    pb: TByteIOContext;

+    nb_streams: cardinal;  (* CAT#3 *)

+    streams: array [0..MAX_STREAMS - 1] of PAVStream;

+    filename: array [0..1023] of char; (* input or output filename *)

+    (* stream info *)

+    timestamp: int64;

+    title: array [0..511] of char;

+    author: array [0..511] of char;

+    copyright: array [0..511] of char;

+    comment: array [0..511] of char;

+    album: array [0..511] of char;

+    year: integer;  (* ID3 year, 0 if none *)

+    track: integer; (* track number, 0 if none *)

+    genre: array [0..31] of char; (* ID3 genre *)

+

+    ctx_flags: integer; (* 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 *)

+    packet_buffer: PAVPacketList;

+

+    (* 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.  *)

+    start_time: int64;

+    (* decoding: duration of the stream, in AV_TIME_BASE fractional

+       seconds. NEVER set this value directly: it is deduced from the

+       AVStream values.  *)

+    duration: int64;

+    (* decoding: total file size. 0 if unknown *)

+    file_size: int64;

+    (* 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. *)

+    bit_rate: integer;

+

+    (* av_read_frame() support *)

+    cur_st: PAVStream;

+    cur_ptr: pbyte;

+    cur_len: integer;

+    cur_pkt: TAVPacket;

+

+    (* av_seek_frame() support *)

+    data_offset: int64; (* offset of the first packet *)

+    index_built: integer;

+

+    mux_rate: integer;

+    packet_size: integer;

+    preload: integer;

+    max_delay: integer;

+

+    (* number of times to loop output in formats that support it *)

+    loop_output: integer;

+

+    flags: integer;

+    loop_input: integer;

+    (* decoding: size of data to probe; encoding unused *)

+    probesize: cardinal;

+

+    (**

+     * maximum duration in AV_TIME_BASE units over which the input should be analyzed in av_find_stream_info()

+     *)

+    max_analyze_duration: integer;

+

+    key: pbyte;

+    keylen : integer

+  end;

+

+  TAVPacketList = record {64}

+    pkt: TAVPacket;

+    next: PAVPacketList;

+  end;

+

+(* still image support *)

+  PAVInputImageContext = pointer; // attribute_deprecated;

+//  PAVInputImageContext = pointer; //AVInputImageContext attribute_deprecated;

+

+(* still image support *)

+  TAVImageInfo = record {48}

+    pix_fmt: TAVPixelFormat; (* requested pixel format *)

+    width: integer; (* requested width *)

+    height: integer; (* requested height *)

+    interleaved: integer; (* image is interleaved (e.g. interleaved GIF) *)

+    pict: TAVPicture; (* returned allocated image *)

+  end;

+

+  TAVImageFormat = record {32}

+    name: pchar;

+    extensions: pchar;

+    (* tell if a given file has a chance of being parsing by this format *)

+    img_probe: function (d: PAVProbeData): integer; cdecl;

+    (* read a whole image. 'alloc_cb' is called when the image size is

+       known so that the caller can allocate the image. If 'allo_cb'

+       returns non zero, then the parsing is aborted. Return '0' if

+       OK. *)

+    img_read: function (b: PByteIOContext; alloc_cb: pointer; ptr: pointer): integer; cdecl;

+    (* write the image *)

+    supported_pixel_formats: integer; (* mask of supported formats for output *)

+    img_write: function (b: PByteIOContext; i: PAVImageInfo): integer; cdecl;

+    flags: integer;

+    next: PAVImageFormat;

+  end;

+

+procedure av_destruct_packet_nofree (var pkt: TAVPacket); (* CAT#2 *)

+  cdecl; external av__format;

+procedure av_destruct_packet (var pkt: TAVPacket); (* CAT#2 *)

+  cdecl; external av__format;

+

+(* initialize optional fields of a packet *)

+procedure av_init_packet (var pkt: TAVPacket);  (* CAT#2 *)

+

+function av_new_packet(var pkt: TAVPacket; size: integer): integer; (* CAT#2 *)

+  cdecl; external av__format;

+

+function av_get_packet (s: PByteIOContext; var pkt: TAVPacket; size: integer): integer; (* CAT#2 *)

+  cdecl; external av__format;

+

+function av_dup_packet (pkt: PAVPacket): integer;

+  cdecl; external av__format;

+

+(** * Free a packet

+ *

+ * @param pkt packet to free *)

+procedure av_free_packet (var pkt: TAVPacket); (* CAT#2 *)

+

+procedure av_register_image_format (img_fmt: PAVImageFormat);

+    cdecl; external av__format;

+

+function av_probe_image_format (pd: PAVProbeData): PAVImageFormat;

+    cdecl; external av__format;

+

+function guess_image_format (filename: pchar): PAVImageFormat;

+    cdecl; external av__format;

+

+function av_guess_image2_codec(filename: pchar): TCodecID;

+    cdecl; external av__format;

+

+function av_read_image (pb: PByteIOContext; filename: pchar;

+                  fmt: PAVImageFormat;

+                  alloc_cb: pointer; opaque: pointer): integer;

+    cdecl; external av__format;

+

+function av_write_image(pb: PByteIOContext; fmt: PAVImageFormat; img: PAVImageInfo): integer;

+    cdecl; external av__format;

+

+(* XXX: use automatic init with either ELF sections or C file parser *)

+(* modules *)

+

+//#include "rtp.h"

+

+//#include "rtsp.h"

+

+(* utils.c *)

+  procedure av_register_input_format (format: PAVInputFormat);

+    cdecl; external av__format;

+

+  procedure av_register_output_format (format: PAVOutputFormat);

+    cdecl; external av__format;

+

+  function guess_stream_format (short_name: pchar; filename: pchar; mime_type: pchar): PAVOutputFormat;

+    cdecl; external av__format;

+

+  function guess_format(short_name: pchar; filename: pchar; mime_type: pchar): PAVOutputFormat;

+    cdecl; external av__format;

+

+  function av_guess_codec(fmt: PAVOutputFormat; short_name: pchar;

+                          filename: pchar; mime_type: pchar; _type: TCodecType): TCodecID;

+    cdecl; external av__format;

+

+  procedure av_hex_dump (f: HFILE; buf: pchar; size: integer);

+    cdecl; external av__format;

+  procedure av_pkt_dump(f: HFILE; var pkt: TAVPacket; dump_payload: integer); (* CAT#2 *)

+    cdecl; external av__format;

+

+  procedure av_register_all ();

+    cdecl; external av__format;

+

+

+(* media file input *)

+  function av_find_input_format (short_name: pchar): PAVInputFormat;

+    cdecl; external av__format;

+  function av_probe_input_format (pd: PAVProbeData; is_opened: integer): PAVInputFormat;

+    cdecl; external av__format;

+  function av_open_input_stream (ic_ptr: PAVFormatContext;

+                         pb: PByteIOContext; filename: pchar;

+                         fmt: PAVInputFormat; ap: PAVFormatParameters): integer;

+    cdecl; external av__format;

+(*** Open a media file as input. The codec 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 additionnal parameters needed when opening the file (NULL if default)

+ * @return 0 if OK. AVERROR_xxx otherwise. *)

+

+  function av_open_input_file (var ic_ptr: PAVFormatContext; filename: pchar;

+                       fmt: PAVInputFormat; buf_size: integer;

+                       ap: PAVFormatParameters): integer;

+    cdecl; external av__format;

+

+  (* no av_open for output, so applications will need this: *)

+  function av_alloc_format_context (): PAVFormatContext;

+    cdecl; external av__format;

+

+const

+  AVERROR_UNKNOWN     =(-1);  (* unknown error *)

+  AVERROR_IO          =(-2);  (* i/o error *)

+  AVERROR_NUMEXPECTED =(-3);  (* number syntax expected in filename *)

+  AVERROR_INVALIDDATA =(-4);  (* invalid data found *)

+  AVERROR_NOMEM       =(-5);  (* not enough memory *)

+  AVERROR_NOFMT       =(-6);  (* unknown format *)

+  AVERROR_NOTSUPP     =(-7);  (* operation not supported *)

+

+(*** Read the beginning of a media file to get stream information. This

+ * is useful for file formats with no headers such as MPEG. This

+ * function also compute the real frame rate in case of mpeg2 repeat

+ * frame mode.

+ *

+ * @param ic media file handle

+ * @return >=0 if OK. AVERROR_xxx if error.

+ * @todo let user decide somehow what information is needed so we dont waste time geting stuff the user doesnt need *)

+

+  function av_find_stream_info (ic: PAVFormatContext): integer;

+    cdecl; external av__format;

+  function av_read_packet (s: PAVFormatContext; var pkt: TAVPacket): integer; (* CAT#2 *)

+    cdecl; external av__format;

+(*** 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 AV_TIME_BASE unit (and guessed if the format cannot

+ * provided 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 if error or end of file. *)

+

+  function av_read_frame (s: PAVFormatContext; var pkt: TAVPacket): integer; (* CAT#2 *)

+    cdecl; external av__format;

+  function av_seek_frame (s: PAVFormatContext; stream_index: integer; timestamp: int64; flags: integer): integer;

+    cdecl; external av__format;

+  function av_read_play (s: PAVFormatContext): integer;

+    cdecl; external av__format;

+  function av_read_pause (s: PAVFormatContext): integer;

+    cdecl; external av__format;

+  procedure av_close_input_file (s: PAVFormatContext);

+    cdecl; external av__format;

+  function av_new_stream (s: PAVFormatContext; id: integer): PAVStream;

+    cdecl; external av__format;

+  procedure av_set_pts_info (s: PAVStream; pts_wrap_bits: integer;

+                     pts_num: integer; pts_den: integer);

+    cdecl; external av__format;

+

+const

+  AVSEEK_FLAG_BACKWARD =1; ///< seek backward

+  AVSEEK_FLAG_BYTE     =2; ///< seeking based on position in bytes

+  AVSEEK_FLAG_ANY      =4; ///< seek to any frame, even non keyframes

+

+  function av_find_default_stream_index (s: PAVFormatContext): integer;

+    cdecl; external av__format;

+  function av_index_search_timestamp (st: PAVStream; timestamp: int64; flags: integer): integer;

+    cdecl; external av__format;

+  function av_add_index_entry (st: PAVStream; pos: int64; timestamp: int64;

+                    distance: integer; flags: integer): integer;

+    cdecl; external av__format;

+  function av_seek_frame_binary (s: PAVFormatContext; stream_index: integer;

+                   target_ts: int64; flags: integer): integer;

+    cdecl; external av__format;

+

+  procedure av_update_cur_dts (s: PAVFormatContext; ref_st: PAVStream;

+                               timestamp: int64);

+    cdecl; external av__format;

+

+(* media file output *)

+  function av_set_parameters (s: PAVFormatContext; ap: PAVFormatParameters): integer;

+    cdecl; external av__format;

+

+  function av_write_header (s: PAVFormatContext): integer;

+    cdecl; external av__format;

+

+  function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): integer;

+    cdecl; external av__format; (* CAT#2 *)

+

+  function av_interleaved_write_frame (s: PAVFormatContext; var pkt: TAVPacket): integer;

+    cdecl; external av__format; (* CAT#2 *)

+

+  function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket;

+                                        pkt: PAVPacket; flush: integer): integer;

+    cdecl; external av__format;

+  function av_write_trailer(s: pAVFormatContext): integer;

+    cdecl; external av__format;

+

+  procedure dump_format(ic: PAVFormatContext; index: integer; url: pchar;

+                 is_output: integer);

+    cdecl; external av__format;

+

+  function parse_image_size(width_ptr: PInteger; height_ptr: PInteger; str: pchar): integer;

+    cdecl; external av__format;

+  function parse_frame_rate (frame_rate: PInteger; frame_rate_base: PInteger; arg: pchar): integer;

+    cdecl; external av__format;

+  function parse_date(datestr: pchar; duration: integer): int64;

+    cdecl; external av__format;

+  function av_gettime (): int64;

+    cdecl; external av__format;

+

+(* ffm specific for ffserver *)

+const

+  FFM_PACKET_SIZE = 4096;

+

+  function ffm_read_write_index (fd: integer): int64;

+    cdecl; external av__format;

+

+  procedure ffm_write_write_index(fd: integer; pos: int64);

+    cdecl; external av__format;

+

+  procedure ffm_set_write_index (s: PAVFormatContext; pos: int64; file_size: int64);

+    cdecl; external av__format;

+

+  function find_info_tag (arg: pchar; arg_size: integer; tag1: pchar; info: pchar): integer;

+    cdecl; external av__format;

+

+  function get_frame_filename(buf: pchar; buf_size: integer;

+                       path: pchar; number: integer): integer;

+    cdecl; external av__format;

+  function filename_number_test (filename: pchar): integer;

+    cdecl; external av__format;

+

+

+(* grab specific *)

+  function video_grab_init (): integer;

+    cdecl; external av__format;

+  function audio_init (): integer;

+    cdecl; external av__format;

+

+(* DV1394 *)

+  function dv1394_init (): integer;

+    cdecl; external av__format;

+  function dc1394_init (): integer;

+    cdecl; external av__format;

+

+  function strstart(str: pchar; val: pchar; ptr: PPointer): integer;

+    cdecl; external av__format;

+  function stristart(str: pchar; val: pchar; ptr: PPointer): integer;

+    cdecl; external av__format;

+  procedure pstrcpy(buf: pchar; buf_size: integer; str: pchar);

+    cdecl; external av__format;

+  function pstrcat(buf: pchar; buf_size: integer; s: pchar): pchar;

+    cdecl; external av__format;

+

+  procedure __dynarray_add (tab_ptr: PPointer; nb_ptr: PInteger; elem: cardinal);

+    cdecl; external av__format;

+

+

+implementation

+

+procedure av_init_packet (var pkt: TAVPacket);  (* CAT#2 + bug fix *)

+begin

+  with pkt do begin

+    pts   := AV_NOPTS_VALUE;

+    dts   := AV_NOPTS_VALUE;

+    pos   := -1;

+    duration := 0;

+    flags := 0;

+    stream_index := 0;

+    destruct := @av_destruct_packet_nofree

+  end

+end;

+

+procedure av_free_packet (var pkt: TAVPacket); (* CAT#2 *)

+begin

+  if @pkt.destruct <> nil then pkt.destruct (@pkt)

+{  if (pkt <> nil) and (@pkt^.destruct <> nil) then

+    pkt^.destruct (pkt)}

+end;

+

+end.