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Diffstat (limited to 'Game/Code/lib/ffmpeg/avformat.pas')
| -rw-r--r-- | Game/Code/lib/ffmpeg/avformat.pas | 1372 |
1 files changed, 0 insertions, 1372 deletions
diff --git a/Game/Code/lib/ffmpeg/avformat.pas b/Game/Code/lib/ffmpeg/avformat.pas deleted file mode 100644 index 93ce60e5..00000000 --- a/Game/Code/lib/ffmpeg/avformat.pas +++ /dev/null @@ -1,1372 +0,0 @@ -(* - * copyright (c) 2001 Fabrice Bellard - * - * 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 - *) - -(* - * 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. - * - Changes and updates by the UltraStar Deluxe Team - *) - -(* - * Conversion of libavformat/avformat.h - * Min. version: 50.5.0 , revision 6577, Sat Oct 7 15:30:46 2006 UTC - * Max. version: 52.20.0, revision 14667, Fri Aug 8 18:40:50 2008 UTC - *) - -unit avformat; - -{$IFDEF FPC} - {$MODE DELPHI } - {$PACKENUM 4} (* use 4-byte enums *) - {$PACKRECORDS C} (* C/C++-compatible record packing *) -{$ELSE} - {$MINENUMSIZE 4} (* use 4-byte enums *) -{$ENDIF} - -{$I switches.inc} (* for the HasInline define *) - -{$IFDEF DARWIN} - {$linklib libavformat} -{$ENDIF} - -interface - -uses - ctypes, - avcodec, - avutil, - avio, - rational, - UConfig; - -const - (* Max. supported version by this header *) - LIBAVFORMAT_MAX_VERSION_MAJOR = 52; - LIBAVFORMAT_MAX_VERSION_MINOR = 20; - LIBAVFORMAT_MAX_VERSION_RELEASE = 0; - LIBAVFORMAT_MAX_VERSION = (LIBAVFORMAT_MAX_VERSION_MAJOR * VERSION_MAJOR) + - (LIBAVFORMAT_MAX_VERSION_MINOR * VERSION_MINOR) + - (LIBAVFORMAT_MAX_VERSION_RELEASE * VERSION_RELEASE); - - (* Min. supported version by this header *) - LIBAVFORMAT_MIN_VERSION_MAJOR = 50; - LIBAVFORMAT_MIN_VERSION_MINOR = 5; - LIBAVFORMAT_MIN_VERSION_RELEASE = 0; - LIBAVFORMAT_MIN_VERSION = (LIBAVFORMAT_MIN_VERSION_MAJOR * VERSION_MAJOR) + - (LIBAVFORMAT_MIN_VERSION_MINOR * VERSION_MINOR) + - (LIBAVFORMAT_MIN_VERSION_RELEASE * VERSION_RELEASE); - -(* Check if linked versions are supported *) -{$IF (LIBAVFORMAT_VERSION < LIBAVFORMAT_MIN_VERSION)} - {$MESSAGE Error 'Linked version of libavformat is too old!'} -{$IFEND} - -(* Check if linked versions are supported *) -{$IF (LIBAVFORMAT_VERSION > LIBAVFORMAT_MAX_VERSION)} - {$MESSAGE Warn 'Linked version of libavformat may be unsupported!'} -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52020000} // 52.20.0 -(** - * Returns the LIBAVFORMAT_VERSION_INT constant. - *) -function avformat_version(): cuint; - cdecl; external av__format; -{$IFEND} - - -type - PAVFile = Pointer; - -(* packet functions *) - -type - PAVPacket = ^TAVPacket; - TAVPacket = record - (** - * Presentation time stamp in time_base units. - * This is the time at which the decompressed packet will be presented - * to the user. - * Can be AV_NOPTS_VALUE if it is not stored in the file. - * pts MUST be larger or equal to dts as presentation can not happen before - * decompression, unless one wants to view hex dumps. Some formats misuse - * the terms dts and pts/cts to mean something different, these timestamps - * must be converted to true pts/dts before they are stored in AVPacket. - *) - pts: cint64; - (** - * Decompression time stamp in time_base units. - * This is the time at which the packet is decompressed. - * Can be AV_NOPTS_VALUE if it is not stored in the file. - *) - dts: cint64; - data: PChar; - size: cint; - stream_index: cint; - flags: cint; - duration: cint; ///< presentation duration in time_base units (0 if not available) - destruct: procedure (p: PAVPacket); cdecl; - priv: pointer; - pos: cint64; ///< byte position in stream, -1 if unknown - end; -const - PKT_FLAG_KEY = $0001; - -procedure av_destruct_packet_nofree(var pkt: TAVPacket); - cdecl; external av__format; - -(** - * Default packet destructor. - *) -procedure av_destruct_packet(var pkt: TAVPacket); - cdecl; external av__format; - -(** - * Initialize optional fields of a packet to default values. - * - * @param pkt packet - *) -procedure av_init_packet(var pkt: TAVPacket); -{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 - cdecl; external av__format; -{$IFEND} - -(** - * Allocate the payload of a packet and initialize its fields to default values. - * - * @param pkt packet - * @param size wanted payload size - * @return 0 if OK. AVERROR_xxx otherwise. - *) -function av_new_packet(var pkt: TAVPacket; size: cint): cint; - cdecl; external av__format; - -(** - * Allocate and read the payload of a packet and initialize its fields to default values. - * - * @param pkt packet - * @param size wanted payload size - * @return >0 (read size) if OK. AVERROR_xxx otherwise. - *) -function av_get_packet(s: PByteIOContext; var pkt: TAVPacket; size: cint): cint; - cdecl; external av__format; - -(** - * @warning This is a hack - the packet memory allocation stuff is broken. The - * packet is allocated if it was not really allocated - *) -function av_dup_packet(pkt: PAVPacket): cint; - cdecl; external av__format; - -(** - * Free a packet - * - * @param pkt packet to free - *) -procedure av_free_packet(pkt: PAVPacket); {$IFDEF HasInline}inline;{$ENDIF} - -(*************************************************) -(* fractional numbers for exact pts handling *) - -type - (** - * the exact value of the fractional number is: 'val + num / den'. - * num is assumed to be such as 0 <= num < den - * @deprecated Use AVRational instead - *) - PAVFrac = ^TAVFrac; - TAVFrac = record - val, num, den: cint64; - end; {deprecated} - -(*************************************************) -(* input/output formats *) - -type - (* this structure contains the data a format has to probe a file *) - TAVProbeData = record - filename: pchar; - buf: pchar; - buf_size: cint; - end; - -const - 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 *) - - // used by AVIndexEntry - AVINDEX_KEYFRAME = $0001; - - 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 - - // used by AVStream - MAX_REORDER_DELAY = 4; - - // used by TAVProgram - AV_PROGRAM_RUNNING = 1; - - - AV_DISPOSITION_DEFAULT = $0001; - AV_DISPOSITION_DUB = $0002; - AV_DISPOSITION_ORIGINAL = $0004; - AV_DISPOSITION_COMMENT = $0008; - AV_DISPOSITION_LYRICS = $0010; - AV_DISPOSITION_KARAOKE = $0020; - - // used by TAVFormatContext.debug - FF_FDEBUG_TS = 0001; - -type - PPAVCodecTag = ^PAVCodecTag; - PAVCodecTag = Pointer; - - PPAVFormatContext = ^PAVFormatContext; - PAVFormatContext = ^TAVFormatContext; - - PAVFormatParameters = ^TAVFormatParameters; - - PAVOutputFormat = ^TAVOutputFormat; - PAVProbeData = ^TAVProbeData; - - PAVInputFormat = ^TAVInputFormat; - PAVIndexEntry = ^TAVIndexEntry; - - PAVStream = ^TAVStream; - PAVPacketList = ^TAVPacketList; - - PPAVProgram = ^PAVProgram; - PAVProgram = ^TAVProgram; - - {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 - PAVImageFormat = ^TAVImageFormat; - PAVImageInfo = ^TAVImageInfo; - {$IFEND} - - PAVChapter = ^TAVChapter; - TAVChapter = record - id: cint; ///< Unique id to identify the chapter - time_base: TAVRational; ///< Timebase in which the start/end timestamps are specified - start, end_: cint64; ///< chapter start/end time in time_base units - title: PChar; ///< chapter title - end; - TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter; - PAVChapterArray = ^TAVChapterArray; - - TAVFormatParameters = record - time_base: TAVRational; - sample_rate: cint; - channels: cint; - width: cint; - height: cint; - pix_fmt: TAVPixelFormat; - {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 - image_format: PAVImageFormat; - {$IFEND} - channel: cint; (* used to select dv channel *) - {$IF LIBAVFORMAT_VERSION_MAJOR < 52} - device: pchar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *) - {$IFEND} - standard: pchar; (* tv standard, NTSC, PAL, SECAM *) - { Delphi does not support bit fields -> use bf_flags instead - unsigned int mpeg2ts_raw:1; /**< force raw MPEG2 transport stream output, if possible */ - unsigned int mpeg2ts_compute_pcr:1; /**< compute exact PCR for each transport - stream packet (only meaningful if - mpeg2ts_raw is TRUE) */ - unsigned int initial_pause:1; /**< do not begin to play the stream - immediately (RTSP only) */ - unsigned int prealloced_context:1; - } - bf_flags: byte; // 0:mpeg2ts_raw/1:mpeg2ts_compute_pcr/2:initial_pause/3:prealloced_context - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} - video_codec_id: TCodecID; - audio_codec_id: TCodecID; - {$IFEND} - end; - - TAVOutputFormat = record - name: pchar; - (** - * Descriptive name for the format, meant to be more human-readable - * than \p name. You \e should use the NULL_IF_CONFIG_SMALL() macro - * to define it. - *) - long_name: pchar; - mime_type: pchar; - extensions: pchar; (*< comma separated filename extensions *) - (* size of private data so that it can be allocated in the wrapper *) - priv_data_size: cint; - (* output support *) - audio_codec: TCodecID; (* default audio codec *) - video_codec: TCodecID; (* default video codec *) - write_header: function (c: PAVFormatContext): cint; cdecl; - write_packet: function (c: PAVFormatContext; pkt: PAVPacket): cint; cdecl; - write_trailer: function (c: PAVFormatContext): cint; cdecl; - (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER *) - flags: cint; - (* currently only used to set pixel format if not YUV420P *) - set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): cint; cdecl; - interleave_packet: function (s: PAVFormatContext; out_: PAVPacket; in_: PAVPacket; flush: cint): cint; cdecl; - - {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 - (** - * list of supported codec_id-codec_tag pairs, ordered by "better choice first" - * the arrays are all CODEC_ID_NONE terminated - *) - codec_tag: {const} PPAVCodecTag; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 - subtitle_codec: TCodecID; (**< default subtitle codec *) - {$IFEND} - - (* private fields *) - next: PAVOutputFormat; - end; - - TAVInputFormat = record - name: pchar; - (** - * 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. - *) - long_name: pchar; - (* size of private data so that it can be allocated in the wrapper *) - priv_data_size: cint; - (** - * Tell if a given file has a chance of being parsed by 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. - *) - read_probe: function (p: PAVProbeData): cint; 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): cint; 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): cint; cdecl; - (* close the stream. The AVFormatContext and AVStreams are not - freed by this function *) - read_close: function (c: PAVFormatContext): cint; 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 - * @return >= 0 on success (but not necessarily the new offset) - *) - read_seek: function (c: PAVFormatContext; stream_index: cint; - timestamp: cint64; flags: cint): cint; cdecl; - (** - * gets the next timestamp in stream[stream_index].time_base units. - * @return the timestamp or AV_NOPTS_VALUE if an error occurred - *) - read_timestamp: function (s: PAVFormatContext; stream_index: cint; - pos: pint64; pos_limit: cint64): cint64; cdecl; - (* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER *) - flags: cint; - (* 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: cint; - - (* start/resume playing - only meaningful if using a network based format (RTSP) *) - read_play: function (c: PAVFormatContext): cint; cdecl; - - (* pause playing - only meaningful if using a network based format (RTSP) *) - read_pause: function (c: PAVFormatContext): cint; cdecl; - - {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 - codec_tag: {const} PPAVCodecTag; - {$IFEND} - - (* private fields *) - next: PAVInputFormat; - end; - - TAVStreamParseType = ( - AVSTREAM_PARSE_NONE, - AVSTREAM_PARSE_FULL, (**< full parsing and repack *) - AVSTREAM_PARSE_HEADERS, (**< only parse headers, don't repack *) - AVSTREAM_PARSE_TIMESTAMPS (**< full parsing and interpolation of timestamps for frames not starting on packet boundary *) - ); - - TAVIndexEntry = record - pos: cint64; - timestamp: cint64; - { Delphi doesn't support bitfields -> use flags_size instead - int flags:2; - int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align). - } - flags_size: cint; // 0..1: flags, 2..31: size - min_distance: cint; (* min distance between this and the previous keyframe, used to avoid unneeded searching *) - end; - - (** - * Stream structure. - * New fields can be added to the end with minor version bumps. - * Removal, reordering and changes to existing fields require a major - * version bump. - * sizeof(AVStream) must not be used outside libav*. - *) - TAVStream = record - index: cint; (* stream index in AVFormatContext *) - id: cint; (* format specific stream id *) - codec: PAVCodecContext; (* codec context *) - (** - * Real base frame rate of the stream. - * This is the lowest frame rate with which all timestamps can be - * represented accurately (it is the least common multiple of all - * frame rates in the stream), Note, this value is just a guess! - * For example if the timebase is 1/90000 and all frames have either - * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1. - *) - r_frame_rate: TAVRational; - priv_data: pointer; - - (* internal data used in av_find_stream_info() *) - first_dts: cint64; - {$IF LIBAVFORMAT_VERSION_MAJOR < 52} - codec_info_nb_frames: cint; - {$IFEND} - - (** encoding: PTS generation when outputing stream *) - pts: TAVFrac; - (** - * This is the fundamental unit of time (in seconds) in terms - * of which frame timestamps are represented. For fixed-fps content, - * timebase should be 1/frame rate and timestamp increments should be - * identically 1. - *) - time_base: TAVRational; - pts_wrap_bits: cint; (* number of bits in pts (used for wrapping control) *) - (* ffmpeg.c private use *) - stream_copy: cint; (**< if set, just copy stream *) - discard: TAVDiscard; ///< selects which packets can be discarded at will and dont need to be demuxed - //FIXME move stuff to a flags field? - (* quality, as it has been removed from AVCodecContext and put in AVVideoFrame - * MN:dunno if thats the right place, for it *) - quality: cfloat; - (** - * Decoding: pts of the first frame of the stream, in stream time base. - * Only set this if you are absolutely 100% sure that the value you set - * it to really is the pts of the first frame. - * This may be undefined (AV_NOPTS_VALUE). - * @note The ASF header does NOT contain a correct start_time the ASF - * demuxer must NOT set this. - *) - start_time: cint64; - (** - * Decoding: duration of the stream, in stream time base. - * If a source file does not specify a duration, but does specify - * a bitrate, this value will be estimates from bit rate and file size. - *) - duration: cint64; - - language: array [0..3] of char; (* ISO 639 3-letter language code (empty string if undefined) *) - - (* av_read_frame() support *) - need_parsing: TAVStreamParseType; - parser: PAVCodecParserContext; - - cur_dts: cint64; - last_IP_duration: cint; - last_IP_pts: cint64; - (* av_seek_frame() support *) - index_entries: PAVIndexEntry; (* only used if the format does not support seeking natively *) - nb_index_entries: cint; - index_entries_allocated_size: cuint; - - nb_frames: cint64; ///< number of frames in this stream if known or 0 - - {$IF LIBAVFORMAT_VERSION >= 50006000} // 50.6.0 - pts_buffer: array [0..MAX_REORDER_DELAY] of cint64; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52006000} // 52.6.0 - filename: PChar; (**< source filename of the stream *) - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52008000} // 52.8.0 - disposition: cint; (**< AV_DISPOSITION_* bitfield *) - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0 - probe_data: TAVProbeData; - {$IFEND} - end; - - (** - * format I/O context. - * New fields can be added to the end with minor version bumps. - * Removal, reordering and changes to existing fields require a major - * version bump. - * sizeof(AVFormatContext) must not be used outside libav*. - *) - TAVFormatContext = record - av_class: PAVClass; (* set by av_alloc_format_context *) - (* can only be iformat or oformat, not both at the same time *) - iformat: PAVInputFormat; - oformat: PAVOutputFormat; - priv_data: pointer; - - {$IF LIBAVFORMAT_VERSION_MAJOR >= 52} - pb: PByteIOContext; - {$ELSE} - pb: TByteIOContext; - {$IFEND} - - nb_streams: cuint; - streams: array [0..MAX_STREAMS - 1] of PAVStream; - filename: array [0..1023] of char; (* input or output filename *) - (* stream info *) - timestamp: cint64; - 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: cint; (* ID3 year, 0 if none *) - track: cint; (* track number, 0 if none *) - genre: array [0..31] of char; (* ID3 genre *) - - ctx_flags: cint; (* 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: cint64; - (* decoding: duration of the stream, in AV_TIME_BASE fractional - seconds. NEVER set this value directly: it is deduced from the - AVStream values. *) - duration: cint64; - (* decoding: total file size. 0 if unknown *) - file_size: cint64; - (* 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: cint; - - (* av_read_frame() support *) - cur_st: PAVStream; - cur_ptr: pbyte; - cur_len: cint; - cur_pkt: TAVPacket; - - (* av_seek_frame() support *) - data_offset: cint64; (* offset of the first packet *) - index_built: cint; - - mux_rate: cint; - packet_size: cint; - preload: cint; - max_delay: cint; - - (* number of times to loop output in formats that support it *) - loop_output: cint; - - flags: cint; - loop_input: cint; - - {$IF LIBAVFORMAT_VERSION >= 50006000} // 50.6.0 - (* decoding: size of data to probe; encoding unused *) - probesize: cuint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 51009000} // 51.9.0 - (** - * maximum duration in AV_TIME_BASE units over which the input should be analyzed in av_find_stream_info() - *) - max_analyze_duration: cint; - - key: pbyte; - keylen : cint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0 - nb_programs: cuint; - programs: PPAVProgram; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 - (** - * Forced video codec_id. - * demuxing: set by user - *) - video_codec_id: TCodecID; - (** - * Forced audio codec_id. - * demuxing: set by user - *) - audio_codec_id: TCodecID; - (** - * Forced subtitle codec_id. - * demuxing: set by user - *) - subtitle_codec_id: TCodecID; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 - (** - * Maximum amount of memory in bytes to use per stream for the index. - * If the needed index exceeds this size entries will be discarded as - * needed to maintain a smaller size. This can lead to slower or less - * accurate seeking (depends on demuxer). - * Demuxers for which a full in memory index is mandatory will ignore - * this. - * muxing : unused - * demuxing: set by user - *) - max_index_size: cuint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52009000} // 52.9.0 - (** - * Maximum amount of memory in bytes to use for buffering frames - * obtained from real-time capture devices. - *) - max_picture_buffer: cuint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 - nb_chapters: cuint; - chapters: PAVChapterArray; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52016000} // 52.16.0 - (** - * Flags to enable debuging. - *) - debug: cint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0 - (** - * raw packets from the demuxer, prior to parsing and decoding. - * This buffer is used for buffering packets until the codec can - * be identified, as parsing cannot be done without knowing the - * codec. - *) - raw_packet_buffer: PAVPacketList; - raw_packet_buffer_end: PAVPacketList; - - packet_buffer_end: PAVPacketList; - {$IFEND} - end; - - (** - * 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*. - *) - TAVProgram = record - id : cint; - provider_name : PChar; ///< Network name for DVB streams - name : PChar; ///< Service name for DVB streams - flags : cint; - discard : TAVDiscard; ///< selects which program to discard and which to feed to the caller - {$IF LIBAVFORMAT_VERSION >= 51016000} // 51.16.0 - stream_index : PCardinal; - nb_stream_indexes : PCardinal; - {$IFEND} - end; - - TAVPacketList = record - pkt: TAVPacket; - next: PAVPacketList; - end; - -{$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 - (* still image support *) - PAVInputImageContext = pointer; {deprecated} - - (* still image support *) - TAVImageInfo = record - pix_fmt: TAVPixelFormat; (* requested pixel format *) - width: cint; (* requested width *) - height: cint; (* requested height *) - interleaved: cint; (* image is interleaved (e.g. interleaved GIF) *) - pict: TAVPicture; (* returned allocated image *) - end; {deprecated} - - TAVImageFormat = record - name: pchar; - extensions: pchar; - (* tell if a given file has a chance of being parsing by this format *) - img_probe: function (d: PAVProbeData): cint; cdecl; - (* read a whole image. 'alloc_cb' is called when the image size is - known so that the caller can allocate the image. If 'allo_cb' - returns non zero, then the parsing is aborted. Return '0' if - OK. *) - img_read: function (b: PByteIOContext; alloc_cb: pointer; ptr: pointer): cint; cdecl; - (* write the image *) - supported_pixel_formats: cint; (* mask of supported formats for output *) - img_write: function (b: PByteIOContext; i: PAVImageInfo): cint; cdecl; - flags: cint; - next: PAVImageFormat; - end; {deprecated} - -procedure av_register_image_format(img_fmt: PAVImageFormat); - cdecl; external av__format; deprecated; - -function av_probe_image_format(pd: PAVProbeData): PAVImageFormat; - cdecl; external av__format; deprecated; - -function guess_image_format(filename: pchar): PAVImageFormat; - cdecl; external av__format; deprecated; - -function av_read_image(pb: PByteIOContext; filename: pchar; - fmt: PAVImageFormat; - alloc_cb: pointer; opaque: pointer): cint; - cdecl; external av__format; deprecated; - -function av_write_image(pb: PByteIOContext; fmt: PAVImageFormat; img: PAVImageInfo): cint; - cdecl; external av__format; deprecated; -{$IFEND} - -{$IF LIBAVFORMAT_VERSION_MAJOR < 53} -{ -var - first_iformat: PAVInputFormat; external av__format; - first_oformat: PAVOutputFormat; external av__format; -} -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 -function av_iformat_next(f: PAVInputFormat): PAVInputFormat; - cdecl; external av__format; -function av_oformat_next(f: PAVOutputFormat): PAVOutputFormat; - cdecl; external av__format; -{$IFEND} - -function av_guess_image2_codec(filename: {const} PChar): TCodecID; - cdecl; external av__format; - -(* XXX: use automatic init with either ELF sections or C file parser *) -(* modules *) - -(* 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; - -(** - * Guesses the codec id based upon muxer and filename. - *) -function av_guess_codec(fmt: PAVOutputFormat; short_name: pchar; - filename: pchar; mime_type: pchar; type_: TCodecType): TCodecID; - cdecl; external av__format; - -(** - * 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 - *) -procedure av_hex_dump(f: PAVFile; buf: pchar; size: cint); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0 -(** - * Send a nice hexadecimal dump of a buffer to the log. - * - * @param avcl A pointer to an arbitrary struct of which the first field is a - * pointer to an AVClass struct. - * @param level The importance level of the message, lower values signifying - * higher importance. - * @param buf buffer - * @param size buffer size - * - * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log - *) -procedure av_hex_dump_log(avcl: Pointer; level: cint; buf: PChar; size: cint); - cdecl; external av__format; -{$IFEND} - -(** - * 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 - *) -procedure av_pkt_dump(f: PAVFile; pkt: PAVPacket; dump_payload: cint); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0 -(** - * Send a nice dump of a packet to the log. - * - * @param avcl A pointer to an arbitrary struct of which the first field is a - * pointer to an AVClass struct. - * @param level The importance level of the message, lower values signifying - * higher importance. - * @param pkt packet to dump - * @param dump_payload true if the payload must be displayed too - *) -procedure av_pkt_dump_log(avcl: Pointer; level: cint; pkt: PAVPacket; dump_payload: cint); - cdecl; external av__format; -{$IFEND} - -procedure av_register_all(); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 -(** codec tag <-> codec id *) -function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TCodecID; - cdecl; external av__format; -function av_codec_get_tag(var tags: PAVCodecTag; id: TCodecID): cuint; - cdecl; external av__format; -{$IFEND} - -(* media file input *) - -(** - * finds AVInputFormat based on input format's short name. - *) -function av_find_input_format(short_name: pchar): PAVInputFormat; - cdecl; external av__format; - -(** - * Guess file format. - * - * @param is_opened whether the file is already opened, determines whether - * demuxers with or without AVFMT_NOFILE are probed - *) -function av_probe_input_format(pd: PAVProbeData; is_opened: cint): PAVInputFormat; - cdecl; external av__format; - -(** - * Allocates all the structures needed to read an input stream. - * This does not open the needed codecs for decoding the stream[s]. - *) -function av_open_input_stream(ic_ptr: PAVFormatContext; - pb: PByteIOContext; filename: pchar; - fmt: PAVInputFormat; ap: PAVFormatParameters): cint; - cdecl; external av__format; - -(** - * 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. - *) -function av_open_input_file(var ic_ptr: PAVFormatContext; filename: pchar; - fmt: PAVInputFormat; buf_size: cint; - ap: PAVFormatParameters): cint; - cdecl; external av__format; - -(** - * Allocate an AVFormatContext. - * Can be freed with av_free() but do not forget to free everything you - * explicitly allocated as well! - *) -function av_alloc_format_context(): PAVFormatContext; - cdecl; external av__format; - -(** - * 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 frame rate in case of mpeg2 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 if error. - * @todo Let user decide somehow what information is needed so we do not waste time getting stuff the user does not need. - *) -function av_find_stream_info(ic: PAVFormatContext): cint; - cdecl; external av__format; - -(** - * 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 if error. - *) -function av_read_packet(s: PAVFormatContext; var pkt: TAVPacket): cint; - 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 cint 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.timebase units (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): cint; - cdecl; external av__format; - -(** - * Seek to the key frame 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 there is no stream specified then in AV_TIME_BASE units - * @param flags flags which select direction and seeking mode - * @return >= 0 on success - *) -function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint64; flags: cint): cint; - cdecl; external av__format; - -(** - * start playing a network based stream (e.g. RTSP stream) at the - * current position - *) -function av_read_play(s: PAVFormatContext): cint; - cdecl; external av__format; - -(** - * Pause a network based stream (e.g. RTSP stream). - * - * Use av_read_play() to resume it. - *) -function av_read_pause(s: PAVFormatContext): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0 -(** - * Free a AVFormatContext allocated by av_open_input_stream. - * @param s context to free - *) -procedure av_close_input_stream(s: PAVFormatContext); - cdecl; external av__format; -{$IFEND} - -(** - * Close a media file (but not its codecs). - * - * @param s media file handle - *) -procedure av_close_input_file(s: PAVFormatContext); - cdecl; external av__format; - -(** - * 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 - *) -function av_new_stream(s: PAVFormatContext; id: cint): PAVStream; - cdecl; external av__format; -{$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0 -function av_new_program(s: PAVFormatContext; id: cint): PAVProgram; - cdecl; external av__format; -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 -(** - * Add a new chapter. - * This function is NOT part of the public API - * and should be ONLY used by demuxers. - * - * @param s media file handle - * @param id unique id for this chapter - * @param start chapter start time in time_base units - * @param end chapter end time in time_base units - * @param title chapter title - * - * @return AVChapter or NULL if error. - *) -function ff_new_chapter(s: PAVFormatContext; id: cint; time_base: TAVRational; start, end_: cint64; title: {const} Pchar): PAVChapter; - cdecl; external av__format; -{$IFEND} - -(** - * 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) - *) -procedure av_set_pts_info(s: PAVStream; pts_wrap_bits: cint; - pts_num: cint; pts_den: cint); - 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): cint; - cdecl; external av__format; - -(** - * 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 - *) -function av_index_search_timestamp(st: PAVStream; timestamp: cint64; flags: cint): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 -(** - * Ensures the index uses less memory than the maximum specified in - * AVFormatContext.max_index_size, by discarding entries if it grows - * too large. - * This function is not part of the public API and should only be called - * by demuxers. - *) -procedure ff_reduce_index(s: PAVFormatContext; stream_index: cint); - cdecl; external av__format; -{$IFEND} - -(** - * Add a index entry into a sorted list updateing if it is already there. - * - * @param timestamp timestamp in the timebase of the given stream - *) -function av_add_index_entry(st: PAVStream; pos: cint64; timestamp: cint64; - distance: cint; flags: cint): cint; - cdecl; external av__format; - -(** - * 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 - *) -function av_seek_frame_binary(s: PAVFormatContext; stream_index: cint; - target_ts: cint64; flags: cint): cint; - cdecl; external av__format; - - -(** - * Updates cur_dts of all streams based on given timestamp and AVStream. - * - * Stream ref_st unchanged, others set cur_dts in their native timebase - * 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 - *) -procedure av_update_cur_dts(s: PAVFormatContext; ref_st: PAVStream; - timestamp: cint64); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51007000} // 51.7.0 -type - TReadTimestampFunc = function (pavfc: PAVFormatContext; - arg2: cint; arg3: Pint64; arg4: cint64): cint64; cdecl; - -(** - * Does a binary search using read_timestamp(). - * This is not supposed to be called directly by a user application, but by demuxers. - * @param target_ts target timestamp in the time base of the given stream - * @param stream_index stream number - *) -function av_gen_search(s: PAVFormatContext; stream_index: cint; target_ts: cint64; - pos_min: cint64; pos_max: cint64; pos_limit: cint64; ts_min: cint64; ts_max: cint64; - flags: cint; ts_ret: Pint64; read_timestamp: TReadTimestampFunc): cint64; - cdecl; external av__format; -{$IFEND} - -(* media file output *) -function av_set_parameters(s: PAVFormatContext; ap: PAVFormatParameters): cint; - cdecl; external av__format; - -(** - * 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 if error. - *) -function av_write_header(s: PAVFormatContext): cint; - cdecl; external av__format; - -(** - * 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 if error, = 0 if OK, 1 if end of stream wanted. - *) -function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; - cdecl; external av__format; - -(** - * 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 if error, = 0 if OK, 1 if end of stream wanted. - *) -function av_interleaved_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; - cdecl; external av__format; - -(** - * 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 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 - *) -function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket; - pkt: PAVPacket; flush: cint): cint; - cdecl; external av__format; - -(** - * @brief Write the stream trailer to an output media file and - * free the file private data. - * - * @param s media file handle - * @return 0 if OK. AVERROR_xxx if error. - *) -function av_write_trailer(s: pAVFormatContext): cint; - cdecl; external av__format; - -procedure dump_format(ic: PAVFormatContext; index: cint; url: pchar; - is_output: cint); - cdecl; external av__format; - -(** - * parses width and height out of string str. - * @deprecated Use av_parse_video_frame_size instead. - *) -function parse_image_size(width_ptr: PCint; height_ptr: PCint; str: pchar): cint; - cdecl; external av__format; deprecated; - -(** - * Converts frame rate from string to a fraction. - * @deprecated Use av_parse_video_frame_rate instead. - *) -function parse_frame_rate(frame_rate: PCint; frame_rate_base: PCint; arg: pchar): cint; - cdecl; external av__format; deprecated; - -(** - * 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 localtime unless Z is appended, in which case it is - * interpreted as UTC. - * If the year-month-day part isn't 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. - *) -function parse_date(datestr: pchar; duration: cint): cint64; - cdecl; external av__format; - -function av_gettime(): cint64; - cdecl; external av__format; - -(* ffm specific for ffserver *) -const - FFM_PACKET_SIZE = 4096; - -function ffm_read_write_index(fd: cint): cint64; - cdecl; external av__format; - -procedure ffm_write_write_index(fd: cint; pos: cint64); - cdecl; external av__format; - -procedure ffm_set_write_index(s: PAVFormatContext; pos: cint64; file_size: cint64); - cdecl; external av__format; - -(** - * Attempts to find a specific tag in a URL. - * - * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. - * Return 1 if found. - *) -function find_info_tag(arg: pchar; arg_size: cint; tag1: pchar; info: pchar): cint; - cdecl; external av__format; - -(** - * Returns in 'buf' the path with '%d' replaced by 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 if format error. - *) -function av_get_frame_filename(buf: pchar; buf_size: cint; - path: pchar; number: cint): cint; - cdecl; external av__format - {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0 - name 'get_frame_filename' - {$IFEND}; - -(** - * 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. - *) -function av_filename_number_test(filename: pchar): cint; - cdecl; external av__format - {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0 - name 'filename_number_test' - {$IFEND}; - -{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 -(** - * Generate an SDP for an RTP session. - * - * @param ac array of AVFormatContexts describing the RTP streams. If the - * array is composed by only one context, such context can contain - * multiple AVStreams (one AVStream per RTP stream). Otherwise, - * all the contexts in the array (an AVCodecContext per RTP stream) - * must contain only one AVStream - * @param n_files number of AVCodecContexts contained in ac - * @param buff buffer where the SDP will be stored (must be allocated by - * the caller - * @param size the size of the buffer - * @return 0 if OK. AVERROR_xxx if error. - *) -function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PChar; size: cint): cint; - cdecl; external av__format; -{$IFEND} - -implementation - -{$IF LIBAVFORMAT_VERSION < 51012002} // 51.12.2 -procedure av_init_packet(var pkt: TAVPacket); -begin - with pkt do begin - pts := AV_NOPTS_VALUE; - dts := AV_NOPTS_VALUE; - pos := -1; - duration := 0; - flags := 0; - stream_index := 0; - destruct := @av_destruct_packet_nofree - end -end; -{$IFEND} - -procedure av_free_packet(pkt: PAVPacket); -begin - if ((pkt <> nil) and (@pkt^.destruct <> nil)) then - pkt^.destruct(pkt); -end; - -end. |