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Diffstat (limited to 'mediaplugin/src/lib/ffmpeg/avformat.pas')
| -rw-r--r-- | mediaplugin/src/lib/ffmpeg/avformat.pas | 2100 |
1 files changed, 0 insertions, 2100 deletions
diff --git a/mediaplugin/src/lib/ffmpeg/avformat.pas b/mediaplugin/src/lib/ffmpeg/avformat.pas deleted file mode 100644 index bd13c70e..00000000 --- a/mediaplugin/src/lib/ffmpeg/avformat.pas +++ /dev/null @@ -1,2100 +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: 52.78.3, revision 24841, Thu Aug 26 02:00:00 2010 CET - *) - -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, - SysUtils, - UConfig; - -const - (* - * IMPORTANT: The official FFmpeg C headers change very quickly. Often some - * of the data structures are changed so that they become incompatible with - * older header files. The Pascal headers have to be adjusted to those changes, - * otherwise the application might crash randomly or strange bugs (not - * necessarily related to video or audio due to buffer overflows etc.) might - * occur. - * - * In the past users reported problems with USDX that took hours to fix and - * the problem was an unsupported version of FFmpeg. So we decided to disable - * support for future versions of FFmpeg until the headers are revised by us - * for that version as they otherwise most probably will break USDX. - * - * If the headers do not yet support your FFmpeg version you may want to - * adjust the max. version numbers manually but please note: it may work but - * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT - * for the game if the MAX. VERSION WAS CHANGED. - * - * The only safe way to support new versions of FFmpeg is to add the changes - * of the FFmpeg git repository C headers to the Pascal headers. - * You can accelerate this process by posting a patch with the git changes - * translated to Pascal to our bug tracker (please join our IRC chat before - * you start working on it). Simply adjusting the max. versions is NOT a valid - * fix. - *) - (* Max. supported version by this header *) - LIBAVFORMAT_MAX_VERSION_MAJOR = 52; - LIBAVFORMAT_MAX_VERSION_MINOR = 78; - LIBAVFORMAT_MAX_VERSION_RELEASE = 3; - 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 Error 'Linked version of libavformat is not yet supported!'} -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52078003} // >= 52.78.3 -(** - * Those FF_API_* defines are not part of public API. - * They may change, break or disappear at any time. - *) -const - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} - FF_API_MAX_STREAMS = (LIBAVFORMAT_VERSION_MAJOR < 53); - FF_API_OLD_METADATA = (LIBAVFORMAT_VERSION_MAJOR < 53); - FF_API_REGISTER_PROTOCOL = (LIBAVFORMAT_VERSION_MAJOR < 53); - FF_API_URL_RESETBUF = (LIBAVFORMAT_VERSION_MAJOR < 53); - {$ELSE} - FF_API_URL_CLASS = (LIBAVFORMAT_VERSION_MAJOR >= 53); - {$IFEND} -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52020000} // 52.20.0 -(** - * I return the LIBAVFORMAT_VERSION_INT constant. You got - * a fucking problem with that, douchebag? - *) -function avformat_version(): cuint; - cdecl; external av__format; -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52039002} // 52.39.2 -(** - * Return the libavformat build-time configuration. - *) -function avformat_configuration(): {const} PansiChar; - cdecl; external av__format; - -(** - * Return the libavformat license. - *) -function avformat_license(): {const} PansiChar; - cdecl; external av__format; -{$IFEND} - -type - PAVFile = Pointer; - -(* - * Public Metadata API. - * The metadata API allows libavformat to export metadata tags to a client - * application using a sequence of key/value pairs. Like all strings in FFmpeg, - * metadata must be stored as UTF-8 encoded Unicode. Note that metadata - * exported by demuxers isn't checked to be valid UTF-8 in most cases. - * Important concepts to keep in mind: - * 1. Keys are unique; there can never be 2 tags with the same key. This is - * also meant semantically, i.e., a demuxer should not knowingly produce - * several keys that are literally different but semantically identical. - * E.g., key=Author5, key=Author6. In this example, all authors must be - * placed in the same tag. - * 2. Metadata is flat, not hierarchical; there are no subtags. If you - * want to store, e.g., the email address of the child of producer Alice - * and actor Bob, that could have key=alice_and_bobs_childs_email_address. - * 3. A tag whose value is localized for a particular language is appended - * with a dash character ('-') and the ISO 639-2/B 3-letter language code. - * For example: Author-ger=Michael, Author-eng=Mike - * The original/default language is in the unqualified "Author" tag. - * A demuxer should set a default if it sets any translated tag. - *) -const - AV_METADATA_MATCH_CASE = 1; - AV_METADATA_IGNORE_SUFFIX = 2; -{$IF LIBAVFORMAT_VERSION >= 52043000} // >= 52.43.0 - AV_METADATA_DONT_STRDUP_KEY = 4; - AV_METADATA_DONT_STRDUP_VAL = 8; -{$IFEND} -{$IF LIBAVFORMAT_VERSION >= 52061000} // >= 52.61.0 - AV_METADATA_DONT_OVERWRITE = 16; -{$IFEND} - -type - PAVMetadataTag = ^TAVMetadataTag; - TAVMetadataTag = record - key: PAnsiChar; - value: PAnsiChar; - end; - - PAVMetadata = Pointer; - -{$IF LIBAVFORMAT_VERSION > 52024001} // > 52.24.1 -(** - * Get a metadata element with matching key. - * - * @param prev Set to the previous matching element to find the next. - * If set to NULL the first matching element is returned. - * @param flags Allows case as well as suffix-insensitive comparisons. - * @return Found tag or NULL, changing key or value leads to undefined behavior. - *) -function av_metadata_get(m: PAVMetadata; key: {const} PAnsiChar; - prev: {const} PAVMetadataTag ; flags: cint): PAVMetadataTag; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 -(** - * Set the given tag in *pm, overwriting an existing tag. - * - * @param pm pointer to a pointer to a metadata struct. If *pm is NULL - * a metadata struct is allocated and put in *pm. - * @param key tag key to add to *pm (will be av_strduped) - * @param value tag value to add to *pm (will be av_strduped) - * @return >= 0 on success otherwise an error code <0 - * @deprecated Use av_metadata_set2() instead. - *) -function av_metadata_set(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar): cint; - cdecl; external av__format; - {$IF LIBAVFORMAT_VERSION >= 52061000} // >= 52.61.0 - deprecated; - {$IFEND} -{$ELSE} - {$IFDEF FF_API_OLD_METADATA} -(** - * Set the given tag in *pm, overwriting an existing tag. - * - * @param pm pointer to a pointer to a metadata struct. If *pm is NULL - * a metadata struct is allocated and put in *pm. - * @param key tag key to add to *pm (will be av_strduped) - * @param value tag value to add to *pm (will be av_strduped) - * @return >= 0 on success otherwise an error code <0 - * @deprecated Use av_metadata_set2() instead. - *) -function av_metadata_set(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar): cint; - cdecl; external av__format; deprecated; - {$ENDIF} -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52043000} // >= 52.43.0 -(** - * Set the given tag in *pm, overwriting an existing tag. - * - * @param pm pointer to a pointer to a metadata struct. If *pm is NULL - * a metadata struct is allocated and put in *pm. - * @param key tag key to add to *pm (will be av_strduped depending on flags) - * @param value tag value to add to *pm (will be av_strduped depending on flags). - * Passing a NULL value will cause an existing tag to be deleted. - * @return >= 0 on success otherwise an error code <0 - *) -function av_metadata_set2(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar; flags: cint): cint; - cdecl; external av__format; -{$IFEND} - -(** - * Free all the memory allocated for an AVMetadata struct. - *) -procedure av_metadata_free(var m: PAVMetadata); - cdecl; external av__format; -{$IFEND} - -(* packet functions *) - -{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 -type - PAVPacket = ^TAVPacket; - TAVPacket = record - (** - * Presentation timestamp in time_base units; 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. Such timestamps - * must be converted to true pts/dts before they are stored in AVPacket. - *) - pts: cint64; - (** - * Decompression timestamp in time_base units; the time at which the - * packet is decompressed. - * Can be AV_NOPTS_VALUE if it is not stored in the file. - *) - dts: cint64; - data: PByteArray; - size: cint; - stream_index: cint; - flags: cint; - (** - * Duration of this packet in time_base units, 0 if unknown. - * Equals next_pts - this_pts in presentation order. - *) - duration: cint; - destruct: procedure (p: PAVPacket); cdecl; - priv: pointer; - pos: cint64; ///< byte position in stream, -1 if unknown - - {$IF LIBAVFORMAT_VERSION >= 52022000} // 52.22.0 - (** - * Time difference in stream time base units from the pts of this - * packet to the point at which the output from the decoder has converged - * independent from the availability of previous frames. That is, the - * frames are virtually identical no matter if decoding started from - * the very first frame or from this keyframe. - * Is AV_NOPTS_VALUE if unknown. - * This field is not the display duration of the current packet. - * - * The purpose of this field is to allow seeking in streams that have no - * keyframes in the conventional sense. It corresponds to the - * recovery point SEI in H.264 and match_time_delta in NUT. It is also - * essential for some types of subtitle streams to ensure that all - * subtitles are correctly displayed after seeking. - *) - convergence_duration: cint64; - {$IFEND} - end; - -const - PKT_FLAG_KEY = $0001; - -procedure av_destruct_packet_nofree(var pkt: TAVPacket); - cdecl; external av__format; - -(** - * Default packet destructor. - *) -procedure av_destruct_packet(var pkt: TAVPacket); - cdecl; external av__format; - -(** - * Initialize optional fields of a packet with default values. - * - * @param pkt packet - *) -procedure av_init_packet(var pkt: TAVPacket); -{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 - cdecl; external av__format; -{$IFEND} - -(** - * Allocate the payload of a packet and initialize its fields with - * default values. - * - * @param pkt packet - * @param size wanted payload size - * @return 0 if OK, AVERROR_xxx otherwise - *) -function av_new_packet(var pkt: TAVPacket; size: cint): cint; - cdecl; external av__format; -{$IFEND} - -(** - * Allocate and read the payload of a packet and initialize its fields with - * default values. - * - * @param pkt packet - * @param size desired payload size - * @return >0 (read size) if OK, AVERROR_xxx otherwise - *) -function av_get_packet(s: PByteIOContext; var pkt: TAVPacket; size: cint): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 -(** - * @warning This is a hack - the packet memory allocation stuff is broken. The - * packet is allocated if it was not really allocated. - *) -function av_dup_packet(pkt: PAVPacket): cint; - cdecl; external av__format; - -(** - * Free a packet. - * - * @param pkt packet to free - *) -procedure av_free_packet(pkt: PAVPacket); {$IFDEF HasInline}inline;{$ENDIF} -{$IFEND} - -(*************************************************) -(* fractional numbers for exact pts handling *) - -type - (** - * The exact value of the fractional number is: 'val + num / den'. - * num is assumed to be 0 <= num < den. - *) - PAVFrac = ^TAVFrac; - TAVFrac = record - val, num, den: cint64; - end; - -(*************************************************) -(* input/output formats *) - -type - (** - * This structure contains the data a format has to probe a file. - *) - TAVProbeData = record - filename: PAnsiChar; - buf: PByteArray; (**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. *) - buf_size: cint; (**< Size of buf except extra allocated bytes *) - end; - -const - AVPROBE_SCORE_MAX = 100; ///< Maximum 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. *) - AVFMT_TS_DISCONT = $0200; (**< Format allows timestamp discontinuities. *) - {$IF LIBAVFORMAT_VERSION >= 52029002} // 52.29.2 - AVFMT_VARIABLE_FPS = $0400; (**< Format allows variable fps. *) - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52052000} // 52.52.0 - AVFMT_NODIMENSIONS = $0800; (**< Format does not need width/height *) - {$IFEND} - - // used by AVIndexEntry - AVINDEX_KEYFRAME = $0001; - - AVFMTCTX_NOHEADER = $0001; (**< signal that no header is present - (streams are added dynamically) *) - -{$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} - MAX_STREAMS = 20; - {$ELSE} - {$IF LIBAVFORMAT_VERSION < 52068000} // < 52.68.0 - MAX_STREAMS = 100; - {$IFEND} - {$IFEND} -{$ELSE} - {$IFDEF FF_API_MAX_STREAMS} - MAX_STREAMS = 20; - {$ENDIF} -{$IFEND} - - - AVFMT_NOOUTPUTLOOP = -1; - AVFMT_INFINITEOUTPUTLOOP = 0; - AVFMT_FLAG_GENPTS = $0001; ///< Generate missing pts even if it requires parsing future frames. - AVFMT_FLAG_IGNIDX = $0002; ///< Ignore index. - AVFMT_FLAG_NONBLOCK = $0004; ///< Do not block when reading packets from input. -{$IF LIBAVFORMAT_VERSION >= 52048000} // >= 52.48.0 - AVFMT_FLAG_IGNDTS = $0008; ///< Ignore DTS on frames that contain both DTS & PTS -{$IFEND} -{$IF LIBAVFORMAT_VERSION >= 52060000} // >= 52.60.0 - AVFMT_FLAG_NOFILLIN = $0010; ///< Do not infer any values from other values, just return what is stored in the container - AVFMT_FLAG_NOPARSE = $0020; ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled -{$IFEND} -{$IF LIBAVFORMAT_VERSION >= 52063000} // >= 52.63.0 - AVFMT_FLAG_RTP_HINT = $0040; ///< Add RTP hinting to the output file -{$IFEND} - - // used by AVStream - MAX_REORDER_DELAY = 16; - - // 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 = $0020; - - {$IF LIBAVFORMAT_VERSION >= 52073000} // >= 52.73.0 - (** - * Track should be used during playback by default. - * Useful for subtitle track that should be displayed - * even when user did not explicitly ask for subtitles. - *) - AV_DISPOSITION_FORCED = $0040; - {$IFEND} - - // used by TAVFormatContext.debug - FF_FDEBUG_TS = 0001; - - {$IF LIBAVFORMAT_VERSION >= 52034000} // >= 52.34.0 - {$IF LIBAVFORMAT_VERSION < 52039000} // < 52.39.0 - MAX_PROBE_PACKETS = 100; - {$ELSE} - MAX_PROBE_PACKETS = 2500; - {$IFEND} - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52035000} // >= 52.35.0 - {$IF LIBAVFORMAT_VERSION < 52039000} // < 52.39.0 - RAW_PACKET_BUFFER_SIZE = 32000; - {$ELSE} - RAW_PACKET_BUFFER_SIZE = 2500000; - {$IFEND} - {$IFEND} - -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} - -{$IF LIBAVFORMAT_VERSION >= 52030001} // >= 52.30.1 -(** - * Convert all the metadata sets from ctx according to the source and - * destination conversion tables. - * - * @param d_conv destination tags format conversion table - * @param s_conv source tags format conversion table - *) - PAVMetadataConv = ^TAVMetadataConv; - TAVMetadataConv = record - ctx: PAVFormatContext; - d_conv: {const} PAVMetadataConv; - s_conv: {const} PAVMetadataConv; - end; -{$IFEND} - - PAVChapter = ^TAVChapter; - TAVChapter = record - id: cint; ///< unique ID to identify the chapter - time_base: TAVRational; ///< time base in which the start/end timestamps are specified - start, end_: cint64; ///< chapter start/end time in time_base units - {$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 - title: PAnsiChar; ///< chapter title - {$ELSE} - {$IFDEF FF_API_OLD_METADATA} - title: PAnsiChar; ///< chapter title - {$ENDIF} - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 - metadata: PAVMetadata; - {$IFEND} - end; - TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter; - PAVChapterArray = ^TAVChapterArray; - - TAVFormatParameters = record - time_base: TAVRational; - sample_rate: cint; - channels: cint; - width: cint; - height: cint; - pix_fmt: TAVPixelFormat; - {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0 - image_format: PAVImageFormat; - {$IFEND} - channel: cint; (**< Used to select DV channel. *) - {$IF LIBAVFORMAT_VERSION_MAJOR < 52} - device: PAnsiChar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *) - {$IFEND} - standard: PAnsiChar; (**< TV standard, NTSC, PAL, SECAM *) - { Delphi does not support bit fields -> use bf_flags instead - unsigned int mpeg2ts_raw:1; (**< Force raw MPEG-2 transport stream output, if possible. *) - unsigned int mpeg2ts_compute_pcr:1; (**< Compute exact PCR for each transport - stream packet (only meaningful if - mpeg2ts_raw is TRUE). *) - unsigned int initial_pause:1; (**< Do not begin to play the stream - immediately (RTSP only). *) - unsigned int prealloced_context:1; - } - bf_flags: byte; // 0:mpeg2ts_raw/1:mpeg2ts_compute_pcr/2:initial_pause/3:prealloced_context - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} - video_codec_id: TCodecID; - audio_codec_id: TCodecID; - {$IFEND} - end; - - TAVOutputFormat = record - name: PAnsiChar; - (** - * Descriptive name for the format, meant to be more human-readable - * than name. You should use the NULL_IF_CONFIG_SMALL() macro - * to define it. - *) - long_name: PAnsiChar; - mime_type: PAnsiChar; - extensions: PAnsiChar; (**< comma-separated filename extensions *) - (** - * size of private data so that it can be allocated in the wrapper - *) - priv_data_size: cint; - (* output support *) - audio_codec: TCodecID; (**< default audio codec *) - video_codec: TCodecID; (**< default video codec *) - write_header: function (c: PAVFormatContext): cint; cdecl; - write_packet: function (c: PAVFormatContext; pkt: PAVPacket): cint; cdecl; - write_trailer: function (c: PAVFormatContext): cint; cdecl; - (** - * can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER - *) - flags: cint; - (** - * Currently only used to set pixel format if not YUV420P. - *) - set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): cint; cdecl; - interleave_packet: function (s: PAVFormatContext; out_: PAVPacket; - in_: PAVPacket; flush: cint): cint; cdecl; - - {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 - (** - * List of supported codec_id-codec_tag pairs, ordered by "better - * choice first". The arrays are all terminated by CODEC_ID_NONE. - *) - codec_tag: {const} PPAVCodecTag; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 - subtitle_codec: TCodecID; (**< default subtitle codec *) - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52030001} // 52.30.1 - {const} metadata_conv: PAVMetadataConv; - {$IFEND} - - (* private fields *) - next: PAVOutputFormat; - end; - - TAVInputFormat = record - (** - * A comma separated list of short names for the format. New names - * may be appended with a minor bump. - *) - name: PAnsiChar; - - (** - * Descriptive name for the format, meant to be more human-readable - * than name. You should use the NULL_IF_CONFIG_SMALL() macro - * to define it. - *) - long_name: PAnsiChar; - - (** - * Size of private data so that it can be allocated in the wrapper. - *) - priv_data_size: cint; - - (** - * Tell if a given file has a chance of being parsed as this format. - * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes - * big so you do not have to check for that unless you need more. - *) - read_probe: function (p: PAVProbeData): cint; cdecl; - - (** - * Read the format header and initialize the AVFormatContext - * structure. Return 0 if OK. 'ap' if non-NULL contains - * additional parameters. Only used in raw format right - * now. 'av_new_stream' should be called to create new streams. - *) - read_header: function (c: PAVFormatContext; ap: PAVFormatParameters): cint; cdecl; - - (** - * Read one packet and put it in 'pkt'. pts and flags are also - * set. 'av_new_stream' can be called only if the flag - * AVFMTCTX_NOHEADER is used. - * @return 0 on success, < 0 on error. - * When returning an error, pkt must not have been allocated - * or must be freed before returning - *) - read_packet: function (c: PAVFormatContext; var pkt: TAVPacket): cint; cdecl; - - (** - * Close the stream. The AVFormatContext and AVStreams are not - * freed by this function - *) - read_close: function (c: PAVFormatContext): cint; cdecl; - -{$IF LIBAVFORMAT_VERSION_MAJOR < 53} - (** - * Seek to a given timestamp relative to the frames in - * stream component stream_index. - * @param stream_index Must not be -1. - * @param flags Selects which direction should be preferred if no exact - * match is available. - * @return >= 0 on success (but not necessarily the new offset) - *) - read_seek: function (c: PAVFormatContext; stream_index: cint; - timestamp: cint64; flags: cint): cint; cdecl; -{$IFEND} - - (** - * Gets the next timestamp in stream[stream_index].time_base units. - * @return the timestamp or AV_NOPTS_VALUE if an error occurred - *) - read_timestamp: function (s: PAVFormatContext; stream_index: cint; - pos: pint64; pos_limit: cint64): cint64; cdecl; - - (** - * Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. - *) - flags: cint; - - (** - * If extensions are defined, then no probe is done. You should - * usually not use extension format guessing because it is not - * reliable enough - *) - extensions: PAnsiChar; - - (** - * General purpose read-only value that the format can use. - *) - value: cint; - - (** - * Start/resume playing - only meaningful if using a network-based format - * (RTSP). - *) - read_play: function (c: PAVFormatContext): cint; cdecl; - - (** - * Pause playing - only meaningful if using a network-based format - * (RTSP). - *) - read_pause: function (c: PAVFormatContext): cint; cdecl; - - {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 - codec_tag: {const} PPAVCodecTag; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52030000} // 52.30.0 - (** - * Seek to timestamp ts. - * Seeking will be done so that the point from which all active streams - * can be presented successfully will be closest to ts and within min/max_ts. - * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. - *) - read_seek2: function (s: PAVFormatContext; - stream_index: cint; - min_ts: cint64; - ts: cint64; - max_ts: cint64; - flags: cint): cint; cdecl; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52030001} // 52.30.1 - {const} metadata_conv: PAVMetadataConv; - {$IFEND} - - (* private fields *) - next: PAVInputFormat; - end; - - TAVStreamParseType = ( - AVSTREAM_PARSE_NONE, - AVSTREAM_PARSE_FULL, (**< full parsing and repack *) - AVSTREAM_PARSE_HEADERS, (**< Only parse headers, do not repack. *) - AVSTREAM_PARSE_TIMESTAMPS (**< full parsing and interpolation of timestamps for frames not starting on a packet boundary *) - {$IF LIBAVFORMAT_VERSION >= 52066000} // 52.66.0 - , AVSTREAM_PARSE_FULL_ONCE (**< full parsing and repack of the first frame only, only implemented for H.264 currently *) - {$IFEND} - ); - - TAVIndexEntry = record - pos: cint64; - timestamp: cint64; - { Delphi doesn't support bitfields -> use flags_size instead - int flags:2; - int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment). - } - flags_size: cint; // 0..1: flags, 2..31: size - min_distance: cint; (**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. *) - end; - - (** - * Stream structure. - * New fields can be added to the end with minor version bumps. - * Removal, reordering and changes to existing fields require a major - * version bump. - * sizeof(AVStream) must not be used outside libav*. - *) - TAVStream = record - index: cint; (**< stream index in AVFormatContext *) - id: cint; (**< format-specific stream ID *) - codec: PAVCodecContext; (**< codec context *) - (** - * Real base framerate of the stream. - * This is the lowest framerate with which all timestamps can be - * represented accurately (it is the least common multiple of all - * framerates in the stream). Note, this value is just a guess! - * For example, if the time base is 1/90000 and all frames have either - * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1. - *) - r_frame_rate: TAVRational; - priv_data: pointer; - - (* internal data used in av_find_stream_info() *) - first_dts: cint64; - {$IF LIBAVFORMAT_VERSION_MAJOR < 52} - codec_info_nb_frames: cint; - {$IFEND} - - (** - * encoding: pts generation when outputting stream - *) - pts: TAVFrac; - (** - * This is the fundamental unit of time (in seconds) in terms - * of which frame timestamps are represented. For fixed-fps content, - * time base should be 1/framerate and timestamp increments should be 1. - *) - time_base: TAVRational; - pts_wrap_bits: cint; (* number of bits in pts (used for wrapping control) *) - (* ffmpeg.c private use *) - stream_copy: cint; (**< If set, just copy stream. *) - discard: TAVDiscard; ///< Selects which packets can be discarded at will and do not need to be demuxed. - //FIXME move stuff to a flags field? - (** - * Quality, as it has been removed from AVCodecContext and put in AVVideoFrame. - * MN:dunno if thats the right place, for it - *) - quality: cfloat; - - (** - * Decoding: pts of the first frame of the stream, in stream time base. - * Only set this if you are absolutely 100% sure that the value you set - * it to really is the pts of the first frame. - * This may be undefined (AV_NOPTS_VALUE). - * @note The ASF header does NOT contain a correct start_time the ASF - * demuxer must NOT set this. - *) - start_time: cint64; - - (** - * Decoding: duration of the stream, in stream time base. - * If a source file does not specify a duration, but does specify - * a bitrate, this value will be estimated from bitrate and file size. - *) - duration: cint64; - - {$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 - language: array [0..3] of PAnsiChar; (**< ISO 639-2/B 3-letter language code (empty string if undefined) *) - {$ELSE} - {$IFDEF FF_API_OLD_METADATA} - language: array [0..3] of PAnsiChar; (**< ISO 639-2/B 3-letter language code (empty string if undefined) *) - {$ENDIF} - {$IFEND} - - (* 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 - - {$IF (LIBAVFORMAT_VERSION >= 50006000) and (LIBAVFORMAT_VERSION_MAJOR < 53)} // 50.6.0 - 53.0.0 - unused: array [0..4] of cint64; - {$IFEND} - - {$IF (LIBAVFORMAT_VERSION >= 52006000) and (LIBAVFORMAT_VERSION < 52078003)} // 52.6.0 - 52.78.2 - filename: PAnsiChar; (**< source filename of the stream *) - {$ELSE} - {$IFDEF FF_API_OLD_METADATA} - filename: PAnsiChar; (**< source filename of the stream *) - {$ENDIF} - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52008000} // 52.8.0 - disposition: cint; (**< AV_DISPOSITION_* bitfield *) - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0 - probe_data: TAVProbeData; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0 - pts_buffer: array [0..MAX_REORDER_DELAY] of cint64; - - (** - * sample aspect ratio (0 if unknown) - * - encoding: Set by user. - * - decoding: Set by libavformat. - *) - sample_aspect_ratio: TAVRational; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 - metadata: PAVMetadata; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION > 52024001} // > 52.24.1 - {* Intended mostly for av_read_frame() support. Not supposed to be used by *} - {* external applications; try to use something else if at all possible. *} - cur_ptr: {const} PCuint8; - cur_len: cint; - cur_pkt: TAVPacket; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52030000} // > 52.30.0 - // Timestamp generation support: - (** - * Timestamp corresponding to the last dts sync point. - * - * Initialized when AVCodecParserContext.dts_sync_point >= 0 and - * a DTS is received from the underlying container. Otherwise set to - * AV_NOPTS_VALUE by default. - *) - reference_dts: cint64; - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52034000} // >= 52.34.0 - (** - * Number of packets to buffer for codec probing - * NOT PART OF PUBLIC API - *) - probe_packets: cint; - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52038000} // >= 52.38.0 - (** - * last packet in packet_buffer for this stream when muxing. - * used internally, NOT PART OF PUBLIC API, dont read or write from outside of libav* - *) - last_in_packet_buffer: PAVPacketList; - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52041000} // >= 52.41.0 - (** - * Average framerate - *) - avg_frame_rate: TAVRational; - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52054000} // >= 52.54.0 - (** - * Number of frames that have been demuxed during av_find_stream_info() - *) - codec_info_nb_frames: cint; - {$IFEND} - end; - - (** - * Format I/O context. - * New fields can be added to the end with minor version bumps. - * Removal, reordering and changes to existing fields require a major - * version bump. - * sizeof(AVFormatContext) must not be used outside libav*. - *) - TAVFormatContext = record - av_class: PAVClass; (**< Set by avformat_alloc_context. *) - (* Can only be iformat or oformat, not both at the same time. *) - iformat: PAVInputFormat; - oformat: PAVOutputFormat; - priv_data: pointer; - - {$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 AnsiChar; (* input or output filename *) - (* stream info *) - timestamp: cint64; - {$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 - title: array [0..511] of AnsiChar; - author: array [0..511] of AnsiChar; - copyright: array [0..511] of AnsiChar; - comment: array [0..511] of AnsiChar; - album: array [0..511] of AnsiChar; - year: cint; (**< ID3 year, 0 if none *) - track: cint; (**< track number, 0 if none *) - genre: array [0..31] of AnsiChar; (**< ID3 genre *) - {$ELSE} - {$IFDEF FF_API_OLD_METADATA} - title: array [0..511] of AnsiChar; - author: array [0..511] of AnsiChar; - copyright: array [0..511] of AnsiChar; - comment: array [0..511] of AnsiChar; - album: array [0..511] of AnsiChar; - year: cint; (**< ID3 year, 0 if none *) - track: cint; (**< track number, 0 if none *) - genre: array [0..31] of AnsiChar; (**< ID3 genre *) - {$ENDIF} - {$IFEND} - - ctx_flags: cint; (**< Format-specific flags, see AVFMTCTX_xx *) - (* private data for pts handling (do not modify directly). *) - (** - * This buffer is only needed when packets were already buffered but - * not decoded, for example to get the codec parameters in MPEG - * streams. - *) - packet_buffer: PAVPacketList; - - (** - * Decoding: position of the first frame of the component, in - * AV_TIME_BASE fractional seconds. NEVER set this value directly: - * It is deduced from the AVStream values. - *) - start_time: cint64; - (** - * Decoding: duration of the stream, in AV_TIME_BASE fractional - * seconds. Only set this value if you know none of the individual stream - * durations and also dont set any of them. This is deduced from the - * AVStream values if not set. - *) - duration: cint64; - (** - * decoding: total file size, 0 if unknown - *) - file_size: cint64; - (** - * Decoding: total stream bitrate in bit/s, 0 if not - * available. Never set it directly if the file_size and the - * duration are known as ffmpeg can compute it automatically. - *) - bit_rate: cint; - - (* av_read_frame() support *) - cur_st: PAVStream; - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} - cur_ptr_deprecated: pbyte; - cur_len_deprecated: cint; - cur_pkt_deprecated: TAVPacket; - {$IFEND} - - (* av_seek_frame() support *) - data_offset: cint64; (**< offset of the first packet *) - index_built: cint; - - mux_rate: cint; - {$IF LIBAVFORMAT_VERSION < 52034001} // < 52.34.1 - packet_size: cint; - {$ELSE} - packet_size: cuint; - {$IFEND} - 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} - - {$IF LIBAVFORMAT_VERSION >= 51009000} // 51.9.0 - (** - * Maximum time (in AV_TIME_BASE units) during which the input should - * be analyzed in av_find_stream_info(). - *) - max_analyze_duration: cint; - - key: pbyte; - keylen : cint; - {$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} - - {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 - (** - * Maximum amount of memory in bytes to use for the index of each stream. - * If the index exceeds this size, entries will be discarded as - * needed to maintain a smaller size. This can lead to slower or less - * accurate seeking (depends on demuxer). - * Demuxers for which a full in-memory index is mandatory will ignore - * this. - * muxing : unused - * demuxing: set by user - *) - max_index_size: cuint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52009000} // 52.9.0 - (** - * Maximum amount of memory in bytes to use for buffering frames - * obtained from realtime capture devices. - *) - max_picture_buffer: cuint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 - nb_chapters: cuint; - chapters: PAVChapterArray; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52016000} // 52.16.0 - (** - * Flags to enable debugging. - *) - debug: cint; - {$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} - - {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 - metadata: PAVMetadata; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52035000} // 52.35.0 - (** - * Remaining size available for raw_packet_buffer, in bytes. - * NOT PART OF PUBLIC API - *) - raw_packet_buffer_remaining_size: cint; - {$IFEND} - - {$IF LIBAVFORMAT_VERSION >= 52056000} // 52.56.0 - (** - * Start time of the stream in real world time, in microseconds - * since the unix epoch (00:00 1st January 1970). That is, pts=0 - * in the stream was captured at this real world time. - * - encoding: Set by user. - * - decoding: Unused. - *) - start_time_realtime: cint64; - {$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; - {$IF LIBAVFORMAT_VERSION < 52078003} // < 52.78.3 - provider_name : PAnsiChar; ///< network name for DVB streams - name : PAnsiChar; ///< service name for DVB streams - {$ELSE} - {$IFDEF FF_API_OLD_METADATA} - provider_name : PAnsiChar; ///< network name for DVB streams - name : PAnsiChar; ///< service name for DVB streams - {$ENDIF} - {$IFEND} - flags : cint; - discard : TAVDiscard; ///< selects which program to discard and which to feed to the caller - {$IF LIBAVFORMAT_VERSION >= 51016000} // 51.16.0 - stream_index : PCardinal; - nb_stream_indexes : PCardinal; - {$IFEND} - {$IF LIBAVFORMAT_VERSION >= 52024001} // 52.24.1 - metadata: PAVMetadata; - {$IFEND} - end; - - TAVPacketList = record - pkt: TAVPacket; - next: PAVPacketList; - end; - -{$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: PAnsiChar; - extensions: PAnsiChar; - (* 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: PAnsiChar): PAVImageFormat; - cdecl; external av__format; deprecated; - -function av_read_image(pb: PByteIOContext; filename: PAnsiChar; - 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 >= 52030001} // >= 52.30.1 -(** - * Convert all the metadata sets from ctx according to the source and - * destination conversion tables. If one of the tables is NULL, then - * tags are converted to/from ffmpeg generic tag names. - * - * @param d_conv destination tags format conversion table - * @param s_conv source tags format conversion table - *) -procedure av_metadata_conv(ctx: PAVFormatContext; {const} d_conv: PAVMetadataConv; - {const} s_conv: PAVMetadataConv); - cdecl; external av__format; -{$IFEND} - -{$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 -(** - * If f is NULL, returns the first registered input format, - * if f is non-NULL, returns the next registered input format after f - * or NULL if f is the last one. - *) -function av_iformat_next(f: PAVInputFormat): PAVInputFormat; - cdecl; external av__format; -(** - * If f is NULL, returns the first registered output format, - * if f is non-NULL, returns the next registered input format after f - * or NULL if f is the last one. - *) -function av_oformat_next(f: PAVOutputFormat): PAVOutputFormat; - cdecl; external av__format; -{$IFEND} - -function av_guess_image2_codec(filename: {const} PAnsiChar): TCodecID; - cdecl; external av__format; - -(* XXX: Use automatic init with either ELF sections or C file parser *) -(* modules. *) - -(* utils.c *) -procedure av_register_input_format(format: PAVInputFormat); - cdecl; external av__format; - -procedure av_register_output_format(format: PAVOutputFormat); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION_MAJOR < 53} // < 53 -function guess_stream_format(short_name: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; - cdecl; external av__format; deprecated; -{$IFEND} - -(** - * Return the output format in the list of registered output formats - * which best matches the provided parameters, or return NULL if - * there is no match. - * - * @param short_name if non-NULL checks if short_name matches with the - * names of the registered formats - * @param filename if non-NULL checks if filename terminates with the - * extensions of the registered formats - * @param mime_type if non-NULL checks if mime_type matches with the - * MIME type of the registered formats - *) -(** - * @deprecated Use av_guess_format() instead. - *) -function guess_format(short_name: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; - cdecl; external av__format; -{$IF LIBAVFORMAT_VERSION >= 52045000} // >= 52.45.0 - deprecated; -function av_guess_format(short_name: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; - cdecl; external av__format; -{$IFEND} - -(** - * Guess the codec ID based upon muxer and filename. - *) -function av_guess_codec(fmt: PAVOutputFormat; short_name: PAnsiChar; - filename: PAnsiChar; mime_type: PAnsiChar; - type_: TCodecType): TCodecID; - cdecl; external av__format; - -(** - * Send a nice hexadecimal dump of a buffer to the specified file stream. - * - * @param f The file stream pointer where the dump should be sent to. - * @param buf buffer - * @param size buffer size - * - * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log - *) -procedure av_hex_dump(f: PAVFile; buf: PByteArray; size: cint); - cdecl; external av__format; - -{$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: PByteArray; 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; -{$IFEND} - -(** - * Initialize libavformat and register all the muxers, demuxers and - * protocols. If you do not call this function, then you can select - * exactly which formats you want to support. - * - * @see av_register_input_format() - * @see av_register_output_format() - * @see av_register_protocol() - *) -procedure av_register_all(); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0 -(** - * Get the CodecID for the given codec tag tag. - * If no codec id is found returns CODEC_ID_NONE. - * - * @param tags list of supported codec_id-codec_tag pairs, as stored - * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag - *) -function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TCodecID; - cdecl; external av__format; - -(** - * Getsthe codec tag for the given codec id id. - * If no codec tag is found returns 0. - * - * @param tags list of supported codec_id-codec_tag pairs, as stored - * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag - *) -function av_codec_get_tag(var tags: PAVCodecTag; id: TCodecID): cuint; - cdecl; external av__format; -{$IFEND} - -(* media file input *) - -(** - * Find AVInputFormat based on the short name of the input format. - *) -function av_find_input_format(short_name: PAnsiChar): PAVInputFormat; - cdecl; external av__format; - -(** - * Guess file format. - * - * @param is_opened Whether the file is already opened; determines whether - * demuxers with or without AVFMT_NOFILE are probed. - *) -function av_probe_input_format(pd: PAVProbeData; is_opened: cint): PAVInputFormat; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52062000} // 52.62.0 -(** - * Guess the file format. - * - * @param is_opened Whether the file is already opened; determines whether - * demuxers with or without AVFMT_NOFILE are probed. - * @param score_max A probe score larger that this is required to accept a - * detection, the variable is set to the actual detection - * score afterwards. - * If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended - * to retry with a larger probe buffer. - *) -function av_probe_input_format2(pd: PAVProbeData; is_opened: cint; score_max: PCint): PAVInputFormat; - cdecl; external av__format; -{$IFEND} - -(** - * Allocate all the structures needed to read an input stream. - * This does not open the needed codecs for decoding the stream[s]. - *) -function av_open_input_stream(var ic_ptr: PAVFormatContext; - pb: PByteIOContext; filename: PAnsiChar; - fmt: PAVInputFormat; ap: PAVFormatParameters): cint; - cdecl; external av__format; - -(** - * Open a media file as input. The codecs are not opened. Only the file - * header (if present) is read. - * - * @param ic_ptr The opened media file handle is put here. - * @param filename filename to open - * @param fmt If non-NULL, force the file format to use. - * @param buf_size optional buffer size (zero if default is OK) - * @param ap Additional parameters needed when opening the file - * (NULL if default). - * @return 0 if OK, AVERROR_xxx otherwise - *) -function av_open_input_file(var ic_ptr: PAVFormatContext; filename: PAnsiChar; - fmt: PAVInputFormat; buf_size: cint; - ap: PAVFormatParameters): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52026000} // 52.26.0 -(** - * Allocate an AVFormatContext. - * Can be freed with av_free() but do not forget to free everything you - * explicitly allocated as well! - *) -function avformat_alloc_context(): PAVFormatContext; - cdecl; external av__format; -{$ELSE} - {$IF LIBAVFORMAT_VERSION_MAJOR < 53} -(** - * @deprecated Use avformat_alloc_context() instead. - *) -function av_alloc_format_context(): PAVFormatContext; - cdecl; external av__format; - {$IFEND} -{$IFEND} - -(** - * Read packets of a media file to get stream information. This - * is useful for file formats with no headers such as MPEG. This - * function also computes the real framerate in case of MPEG-2 repeat - * frame mode. - * The logical file position is not changed by this function; - * examined packets may be buffered for later processing. - * - * @param ic media file handle - * @return >=0 if OK, AVERROR_xxx on error - * @todo Let the user decide somehow what information is needed so that - * we do not waste time getting stuff the user does not need. - *) -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 on 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.time_base units (and guessed if the format cannot - * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format - * has B-frames, so it is better to rely on pkt->dts if you do not - * decompress the payload. - * - * @return 0 if OK, < 0 on error or end of file - *) -function av_read_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; - cdecl; external av__format; - -(** - * Seek to the keyframe at timestamp. - * 'timestamp' in 'stream_index'. - * @param stream_index If stream_index is (-1), a default - * stream is selected, and timestamp is automatically converted - * from AV_TIME_BASE units to the stream specific time_base. - * @param timestamp Timestamp in AVStream.time_base units - * or, if no stream is specified, in AV_TIME_BASE units. - * @param flags flags which select direction and seeking mode - * @return >= 0 on success - *) -function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint64; - flags: cint): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52026000} // 52.26.0 -(** - * Seek to timestamp ts. - * Seeking will be done so that the point from which all active streams - * can be presented successfully will be closest to ts and within min/max_ts. - * Active streams are all streams that have AVStream.discard < AVDISCARD_ALL. - * - * If flags contain AVSEEK_FLAG_BYTE, then all timestamps are in byte and - * are the file position (this may not be supported by all demuxers). - * If flags contain AVSEEK_FLAG_FRAME then all timestamps are in frames - * in the stream with stream_index (this may not be supported by all demuxers). - * Otherwise all timestamps are in units of the stream selected by stream_index - * or if stream_index is -1, in AV_TIME_BASE units. - * If flags contain AVSEEK_FLAG_ANY, then non-keyframes are treated as - * keyframes (this may not be supported by all demuxers). - * - * @param stream_index index of the stream which is used as time base reference. - * @param min_ts smallest acceptable timestamp - * @param ts target timestamp - * @param max_ts largest acceptable timestamp - * @param flags flags - * @return >=0 on success, error code otherwise - * - * @note This is part of the new seek API which is still under construction. - * Thus do not use this yet. It may change at any time, do not expect - * ABI compatibility yet! - *) -function avformat_seek_file(s: PAVFormatContext; - stream_index: cint; - min_ts: cint64; - ts: cint64; - max_ts: cint64; - flags: cint): cint; - cdecl; external av__format; -{$IFEND} - -(** - * 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} - -{$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0 -(** - * Add a new chapter. - * This function is NOT part of the public API - * and should ONLY be used by demuxers. - * - * @param s media file handle - * @param id unique ID for this chapter - * @param start chapter start time in time_base units - * @param end chapter end time in time_base units - * @param title chapter title - * - * @return AVChapter or NULL on error - *) -function ff_new_chapter(s: PAVFormatContext; id: cint; time_base: TAVRational; - start, end_: cint64; title: {const} PAnsiChar): PAVChapter; - cdecl; external av__format; -{$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; -{$IF LIBAVFORMAT_VERSION < 52036000} // < 52.36.0 - pts_num: cint; pts_den: cint); -{$ELSE} - pts_num: cuint; pts_den: cuint); -{$IFEND} - cdecl; external av__format; - -const - AVSEEK_FLAG_BACKWARD = 1; ///< seek backward - AVSEEK_FLAG_BYTE = 2; ///< seeking based on position in bytes - AVSEEK_FLAG_ANY = 4; ///< seek to any frame, even non-keyframes -{$IF LIBAVFORMAT_VERSION >= 52037000} // >= 52.37.0 - AVSEEK_FLAG_FRAME = 8; -{$IFEND} - -function av_find_default_stream_index(s: PAVFormatContext): cint; - cdecl; external av__format; - -(** - * Get the index for a specific timestamp. - * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond - * to the timestamp which is <= the requested one, if backward - * is 0, then it will be >= - * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise - * @return < 0 if no such timestamp could be found - *) -function av_index_search_timestamp(st: PAVStream; timestamp: cint64; flags: cint): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0 -(** - * Ensure 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; -{$IFEND} - -(** - * Add an index entry into a sorted list. Update the entry if the list - * already contains it. - * - * @param timestamp timestamp in the timebase of the given stream - *) -function av_add_index_entry(st: PAVStream; pos: cint64; timestamp: cint64; - size: cint; distance: cint; flags: cint): cint; - cdecl; external av__format; - -(** - * Perform a binary search using av_index_search_timestamp() and - * AVInputFormat.read_timestamp(). - * This is not supposed to be called directly by a user application, - * but by demuxers. - * @param target_ts target timestamp in the time base of the given stream - * @param stream_index stream number - *) -function av_seek_frame_binary(s: PAVFormatContext; stream_index: cint; - target_ts: cint64; flags: cint): cint; - cdecl; external av__format; - - -(** - * Update cur_dts of all streams based on the given timestamp and AVStream. - * - * Stream ref_st unchanged, others set cur_dts in their native time base. - * Only needed for timestamp wrapping or if (dts not set and pts!=dts). - * @param timestamp new dts expressed in time_base of param ref_st - * @param ref_st reference stream giving time_base of param timestamp - *) -procedure av_update_cur_dts(s: PAVFormatContext; ref_st: PAVStream; - timestamp: cint64); - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 51007000} // 51.7.0 -type - TReadTimestampFunc = function (pavfc: PAVFormatContext; - arg2: cint; arg3: Pint64; arg4: cint64): cint64; cdecl; - -(** - * Perform 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; -{$IFEND} - -(** - * media file output - *) -function av_set_parameters(s: PAVFormatContext; ap: PAVFormatParameters): cint; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION >= 52072000} // 52.72.0 -(** - * Split a URL string into components. - * - * The pointers to buffers for storing individual components may be null, - * in order to ignore that component. Buffers for components not found are - * set to empty strings. If the port is not found, it is set to a negative - * value. - * - * @param proto the buffer for the protocol - * @param proto_size the size of the proto buffer - * @param authorization the buffer for the authorization - * @param authorization_size the size of the authorization buffer - * @param hostname the buffer for the host name - * @param hostname_size the size of the hostname buffer - * @param port_ptr a pointer to store the port number in - * @param path the buffer for the path - * @param path_size the size of the path buffer - * @param url the URL to split - *) -procedure av_url_split(proto: PAnsiChar; proto_size: cint; - authorization: PAnsiChar; authorization_size: cint; - hostname: PAnsiChar; hostname_size: cint; - port_ptr: Pcint; - path: PAnsiChar; path_size: cint; - {const} url: PAnsiChar); - cdecl; external av__format; -{$IFEND} - -(** - * Allocate the stream private data and write the stream header to an - * output media file. - * - * @param s media file handle - * @return 0 if OK, AVERROR_xxx on error - *) -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 on error, = 0 if OK, 1 if end of stream wanted - *) -function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; - cdecl; external av__format; - -(** - * Write a packet to an output media file ensuring correct interleaving. - * - * The packet must contain one audio or video frame. - * If the packets are already correctly interleaved, the application should - * call av_write_frame() instead as it is slightly faster. It is also important - * to keep in mind that completely non-interleaved input will need huge amounts - * of memory to interleave with this, so it is preferable to interleave at the - * demuxer level. - * - * @param s media file handle - * @param pkt The packet, which contains the stream_index, buf/buf_size, - * dts/pts, ... - * @return < 0 on error, = 0 if OK, 1 if end of stream wanted - *) -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 that calling av_free_packet() - * on them is still safe. - * - * @param s media file handle - * @param out the interleaved packet will be output here - * @param pkt 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; - -{$IF LIBAVFORMAT_VERSION >= 52025000} // 52.25.0 -(** - * Add packet to AVFormatContext->packet_buffer list, determining its - * interleaved position using compare() function argument. - * - * This function is not part of the public API and should only be called - * by muxers using their own interleave function. - *) -{ -procedure ff_interleave_add_packet(s: PAVFormatContext; - pkt: PAVPacket; - compare: function(para1: PAVFormatContext; - para2: PAVPacket; - para3: PAVPacket): cint); - cdecl; external av__format; -} -{$IFEND} - -(** - * Write the stream trailer to an output media file and free the - * file private data. - * - * May only be called after a successful call to av_write_header. - * - * @param s media file handle - * @return 0 if OK, AVERROR_xxx on error - *) -function av_write_trailer(s: pAVFormatContext): cint; - cdecl; external av__format; - -procedure dump_format(ic: PAVFormatContext; index: cint; url: PAnsiChar; - is_output: cint); - cdecl; external av__format; - -(** - * Parse width and height out of string str. - * @deprecated Use av_parse_video_frame_size instead. - *) -function parse_image_size(width_ptr: PCint; height_ptr: PCint; - str: PAnsiChar): cint; - cdecl; external av__format; deprecated; - -{$IF LIBAVFORMAT_VERSION_MAJOR < 53} -(** - * Convert framerate from a string to a fraction. - * @deprecated Use av_parse_video_frame_rate instead. - *) -function parse_frame_rate(frame_rate: PCint; frame_rate_base: PCint; - arg: PByteArray): cint; - cdecl; external av__format; deprecated; -{$IFEND} - -(** - * Parse datestr and return a corresponding number of microseconds. - * @param datestr String representing a date or a duration. - * - If a date the syntax is: - * @code - * now|{[{YYYY-MM-DD|YYYYMMDD}[T|t| ]]{{HH[:MM[:SS[.m...]]]}|{HH[MM[SS[.m...]]]}}[Z|z]} - * @endcode - * If the value is "now" it takes the current time. - * Time is localtime unless Z is appended, in which case it is - * interpreted as UTC. - * If the year-month-day part is not specified it takes the current - * year-month-day. - * Returns the number of microseconds since 1st of January, 1970 up to - * the time of the parsed date or INT64_MIN if datestr cannot be - * successfully parsed. - * - If a duration the syntax is: - * @code - * [-]HH[:MM[:SS[.m...]]] - * [-]S+[.m...] - * @endcode - * @return the number of microseconds contained in a time interval - * with the specified duration or INT64_MIN if datestr cannot be - * successfully parsed. - * @param duration Flag which tells how to interpret datestr, if - * not zero datestr is interpreted as a duration, otherwise as a - * date. - *) -function parse_date(datestr: PAnsiChar; duration: cint): cint64; - cdecl; external av__format; - -(** - * Get the current time in microseconds. - *) -function av_gettime(): cint64; - cdecl; external av__format; - -(* ffm-specific for ffserver *) -const - FFM_PACKET_SIZE = 4096; - -function ffm_read_write_index(fd: cint): cint64; - cdecl; external av__format; - -{$IF LIBAVFORMAT_VERSION < 52027000} // 52.27.0 -procedure ffm_write_write_index(fd: cint; pos: cint64); -{$ELSE} -function ffm_write_write_index(fd: cint; pos: cint64): cint; -{$IFEND} - cdecl; external av__format; - -procedure ffm_set_write_index(s: PAVFormatContext; pos: cint64; file_size: cint64); - cdecl; external av__format; - -(** - * Attempt 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: PAnsiChar; arg_size: cint; tag1: PAnsiChar; info: PAnsiChar): cint; - cdecl; external av__format; - -(** - * Return in 'buf' the path with '%d' replaced by a number. - * - * Also handles the '%0nd' format where 'n' is the total number - * of digits and '%%'. - * - * @param buf destination buffer - * @param buf_size destination buffer size - * @param path numbered sequence string - * @param number frame number - * @return 0 if OK, -1 on format error - *) -function av_get_frame_filename(buf: PAnsiChar; buf_size: cint; - path: PAnsiChar; 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: PAnsiChar): cint; - cdecl; external av__format - {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0 - name 'filename_number_test' - {$IFEND}; - -{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2 -(** - * Generate an SDP for an RTP session. - * - * @param ac array of AVFormatContexts describing the RTP streams. If the - * array is composed by only one context, such context can contain - * multiple AVStreams (one AVStream per RTP stream). Otherwise, - * all the contexts in the array (an AVCodecContext per RTP stream) - * must contain only one AVStream. - * @param n_files number of AVCodecContexts contained in ac - * @param buff buffer where the SDP will be stored (must be allocated by - * the caller) - * @param size the size of the buffer - * @return 0 if OK, AVERROR_xxx on error - *) -function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PByteArray; size: cint): cint; - cdecl; external av__format; -{$IFEND} - -{$IF LIBAVFORMAT_VERSION >= 52060000} // 52.60.0 -(** - * Return a positive value if the given filename has one of the given - * extensions, 0 otherwise. - * - * @param extensions a comma-separated list of filename extensions - *) -function av_match_ext(filename: {const} Pchar; extensions: {const} Pchar): cint; - cdecl; external av__format; -{$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} - -{$IF LIBAVFORMAT_VERSION < 52032000} // < 52.32.0 -procedure av_free_packet(pkt: PAVPacket); -begin - if ((pkt <> nil) and (@pkt^.destruct <> nil)) then - pkt^.destruct(pkt); -end; -{$IFEND} - -end. |