diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/ffmpeg-0.10/avformat.pas | 1651 |
1 files changed, 1151 insertions, 500 deletions
diff --git a/src/lib/ffmpeg-0.10/avformat.pas b/src/lib/ffmpeg-0.10/avformat.pas index a1c72e66..31d0777d 100644 --- a/src/lib/ffmpeg-0.10/avformat.pas +++ b/src/lib/ffmpeg-0.10/avformat.pas @@ -61,9 +61,9 @@ const * by removing all unneeded conditionals. *) (* Max. supported version by this header *) - LIBAVFORMAT_MAX_VERSION_MAJOR = 52; - LIBAVFORMAT_MAX_VERSION_MINOR = 111; - LIBAVFORMAT_MAX_VERSION_RELEASE = 0; + LIBAVFORMAT_MAX_VERSION_MAJOR = 53; + LIBAVFORMAT_MAX_VERSION_MINOR = 32; + LIBAVFORMAT_MAX_VERSION_RELEASE = 100; LIBAVFORMAT_MAX_VERSION = (LIBAVFORMAT_MAX_VERSION_MAJOR * VERSION_MAJOR) + (LIBAVFORMAT_MAX_VERSION_MINOR * VERSION_MINOR) + (LIBAVFORMAT_MAX_VERSION_RELEASE * VERSION_RELEASE); @@ -93,83 +93,271 @@ const } (** - * Return the LIBAVFORMAT_VERSION_INT constant. - *) -function avformat_version(): cuint; - cdecl; external av__format; - -(** - * Return the libavformat build-time configuration. - *) -function avformat_configuration(): {const} PansiChar; - cdecl; external av__format; - -(** - * Return the libavformat license. + * Those FF_API_* defines are not part of public API. + * They may change, break or disappear at any time. + *) +{$macro on} +{$ifndef FF_API_OLD_METADATA2} +{$define FF_API_OLD_METADATA2 := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_OLD_AVIO} +{$define FF_API_OLD_AVIO := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_DUMP_FORMAT} +{$define FF_API_DUMP_FORMAT := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_PARSE_DATE} +{$define FF_API_PARSE_DATE := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_FIND_INFO_TAG} +{$define FF_API_FIND_INFO_TAG := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_PKT_DUMP} +{$define FF_API_PKT_DUMP := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_GUESS_IMG2_CODEC} +{$define FF_API_GUESS_IMG2_CODEC := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_SDP_CREATE} +{$define FF_API_SDP_CREATE := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_ALLOC_OUTPUT_CONTEXT} +{$define FF_API_ALLOC_OUTPUT_CONTEXT := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_FORMAT_PARAMETERS} +{$define FF_API_FORMAT_PARAMETERS := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_FLAG_RTP_HINT} +{$define FF_API_FLAG_RTP_HINT := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_AVSTREAM_QUALITY} +{$define FF_API_AVSTREAM_QUALITY := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_LOOP_INPUT} +{$define FF_API_LOOP_INPUT := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_LOOP_OUTPUT} +{$define FF_API_LOOP_OUTPUT := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_TIMESTAMP} +{$define FF_API_TIMESTAMP := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_FILESIZE} +{$define FF_API_FILESIZE := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_MUXRATE} +{$define FF_API_MUXRATE := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_RTSP_URL_OPTIONS} +{$define FF_API_RTSP_URL_OPTIONS := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_NEW_STREAM} +{$define FF_API_NEW_STREAM := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_PRELOAD} +{$define FF_API_PRELOAD := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_STREAM_COPY} +{$define FF_API_STREAM_COPY := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_SEEK_PUBLIC} +{$define FF_API_SEEK_PUBLIC := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_REORDER_PRIVATE} +{$define FF_API_REORDER_PRIVATE := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_OLD_INTERRUPT_CB} +{$define FF_API_OLD_INTERRUPT_CB := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_SET_PTS_INFO} +{$define FF_API_SET_PTS_INFO := (LIBAVFORMAT_VERSION_MAJOR < 54)} +{$endif} +{$ifndef FF_API_CLOSE_INPUT_FILE} +{$define FF_API_CLOSE_INPUT_FILE := (LIBAVFORMAT_VERSION_MAJOR < 55)} +{$endif} + +(** + * @defgroup libavf I/O and Muxing/Demuxing Library + * @{ + * + * Libavformat (lavf) is a library for dealing with various media container + * formats. Its main two purposes are demuxing - i.e. splitting a media file + * into component streams, and the reverse process of muxing - writing supplied + * data in a specified container format. It also has an @ref lavf_io + * "I/O module" which supports a number of protocols for accessing the data (e.g. + * file, tcp, http and others). Before using lavf, you need to call + * av_register_all() to register all compiled muxers, demuxers and protocols. + * Unless you are absolutely sure you won't use libavformat's network + * capabilities, you should also call avformat_network_init(). + * + * A supported input format is described by an AVInputFormat struct, conversely + * an output format is described by AVOutputFormat. You can iterate over all + * registered input/output formats using the av_iformat_next() / + * av_oformat_next() functions. The protocols layer is not part of the public + * API, so you can only get the names of supported protocols with the + * avio_enum_protocols() function. + * + * Main lavf structure used for both muxing and demuxing is AVFormatContext, + * which exports all information about the file being read or written. As with + * most Libav structures, its size is not part of public ABI, so it cannot be + * allocated on stack or directly with av_malloc(). To create an + * AVFormatContext, use avformat_alloc_context() (some functions, like + * avformat_open_input() might do that for you). + * + * Most importantly an AVFormatContext contains: + * @li the @ref AVFormatContext.iformat "input" or @ref AVFormatContext.oformat + * "output" format. It is either autodetected or set by user for input; + * always set by user for output. + * @li an @ref AVFormatContext.streams "array" of AVStreams, which describe all + * elementary streams stored in the file. AVStreams are typically referred to + * using their index in this array. + * @li an @ref AVFormatContext.pb "I/O context". It is either opened by lavf or + * set by user for input, always set by user for output (unless you are dealing + * with an AVFMT_NOFILE format). + * + * @defgroup lavf_decoding Demuxing + * @{ + * Demuxers read a media file and split it into chunks of data (@em packets). A + * @ref AVPacket "packet" contains one or more frames which belong a single + * elementary stream. In lavf API this process is represented by the + * avformat_open_input() function for opening a file, av_read_frame() for + * reading a single packet and finally avformat_close_input(), which does the + * cleanup. + * + * @section lavf_decoding_open Opening a media file + * The minimum information required to open a file is its URL or filename, which + * is passed to avformat_open_input(), as in the following code: + * @code + * const char *url = "in.mp3"; + * AVFormatContext *s = NULL; + * int ret = avformat_open_input(&s, url, NULL, NULL); + * if (ret < 0) + * abort(); + * @endcode + * The above code attempts to allocate an AVFormatContext, open the + * specified file (autodetecting the format) and read the header, exporting the + * information stored there into s. Some formats do not have a header or do not + * store enough information there, so it is recommended that you call the + * avformat_find_stream_info() function which tries to read and decode a few + * frames to find missing information. + * + * In some cases you might want to preallocate an AVFormatContext yourself with + * avformat_alloc_context() and do some tweaking on it before passing it to + * avformat_open_input(). One such case is when you want to use custom functions + * for reading input data instead of lavf internal I/O layer. + * To do that, create your own AVIOContext with avio_alloc_context(), passing + * your reading callbacks to it. Then set the @em pb field of your + * AVFormatContext to newly created AVIOContext. + * + * After you have finished reading the file, you must close it with + * avformat_close_input(). It will free everything associated with the file. + * + * @section lavf_decoding_read Reading from an opened file + * + * @section lavf_decoding_seek Seeking + * @} + * + * @defgroup lavf_encoding Muxing + * @{ + * @} + * + * @defgroup lavf_io I/O Read/Write + * @{ + * @} + * + * @defgroup lavf_codec Demuxers + * @{ + * @defgroup lavf_codec_native Native Demuxers + * @{ + * @} + * @defgroup lavf_codec_wrappers External library wrappers + * @{ + * @} + * @} + * @defgroup lavf_protos I/O Protocols + * @{ + * @} + * @defgroup lavf_internal Internal + * @{ + * @} + * @} + * *) -function avformat_license(): {const} PansiChar; - cdecl; external av__format; type PAVFile = Pointer; (* - * Public Metadata API. + * @defgroup metadata_api Public Metadata API + * @{ + * @ingroup libavf * 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 + * application when demuxing. Conversely it allows a client application to + * set metadata when muxing. + * + * Metadata is exported or set as pairs of key/value strings in the 'metadata' + * fields of the AVFormatContext, AVStream, AVChapter and AVProgram structs + * using the @ref lavu_dict "AVDictionary" API. Like all strings in FFmpeg, + * metadata is assumed to be 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 + * - 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 + * - 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. Several modifiers can be applied to the tag name. This is done by + * - Several modifiers can be applied to the tag name. This is done by * appending a dash character ('-') and the modifier name in the order * they appear in the list below -- e.g. foo-eng-sort, not foo-sort-eng. - * a) language -- a tag whose value is localized for a particular language + * - language -- a tag whose value is localized for a particular language * is appended with 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. - * b) sorting -- a modified version of a tag that should be used for + * - sorting -- a modified version of a tag that should be used for * sorting will have '-sort' appended. E.g. artist="The Beatles", * artist-sort="Beatles, The". * - * 4. Demuxers attempt to export metadata in a generic format, however tags + * - Demuxers attempt to export metadata in a generic format, however tags * with no generic equivalents are left as they are stored in the container. * Follows a list of generic tag names: * - * album -- name of the set this work belongs to - * album_artist -- main creator of the set/album, if different from artist. - * e.g. "Various Artists" for compilation albums. - * artist -- main creator of the work - * comment -- any additional description of the file. - * composer -- who composed the work, if different from artist. - * copyright -- name of copyright holder. - * creation_time-- date when the file was created, preferably in ISO 8601. - * date -- date when the work was created, preferably in ISO 8601. - * disc -- number of a subset, e.g. disc in a multi-disc collection. - * encoder -- name/settings of the software/hardware that produced the file. - * encoded_by -- person/group who created the file. - * filename -- original name of the file. - * genre -- <self-evident>. - * language -- main language in which the work is performed, preferably - * in ISO 639-2 format. Multiple languages can be specified by - * separating them with commas. - * performer -- artist who performed the work, if different from artist. - * E.g for "Also sprach Zarathustra", artist would be "Richard - * Strauss" and performer "London Philharmonic Orchestra". - * publisher -- name of the label/publisher. - * service_name -- name of the service in broadcasting (channel name). - * service_provider -- name of the service provider in broadcasting. - * title -- name of the work. - * track -- number of this work in the set, can be in form current/total. - * variant_bitrate -- the total bitrate of the bitrate variant that the current stream is part of + @verbatim + album -- name of the set this work belongs to + album_artist -- main creator of the set/album, if different from artist. + e.g. "Various Artists" for compilation albums. + artist -- main creator of the work + comment -- any additional description of the file. + composer -- who composed the work, if different from artist. + copyright -- name of copyright holder. + creation_time-- date when the file was created, preferably in ISO 8601. + date -- date when the work was created, preferably in ISO 8601. + disc -- number of a subset, e.g. disc in a multi-disc collection. + encoder -- name/settings of the software/hardware that produced the file. + encoded_by -- person/group who created the file. + filename -- original name of the file. + genre -- <self-evident>. + language -- main language in which the work is performed, preferably + in ISO 639-2 format. Multiple languages can be specified by + separating them with commas. + performer -- artist who performed the work, if different from artist. + E.g for "Also sprach Zarathustra", artist would be "Richard + Strauss" and performer "London Philharmonic Orchestra". + publisher -- name of the label/publisher. + service_name -- name of the service in broadcasting (channel name). + service_provider -- name of the service provider in broadcasting. + title -- name of the work. + track -- number of this work in the set, can be in form current/total. + variant_bitrate -- the total bitrate of the bitrate variant that the current stream is part of + @endverbatim + * + * Look in the examples section for an application example how to use the Metadata API. + * + * @} *) {$IF FF_API_OLD_METADATA2} @@ -217,21 +405,6 @@ function av_metadata_get(m: PAVDictionary; key: {const} PAnsiChar; prev: {const} PAVDictionaryEntry; flags: cint): PAVDictionaryEntry; cdecl; external av__format; -{$IF FF_API_OLD_METADATA} -(** - * Set the given tag in *pm, overwriting an existing tag. - * - * @param pm pointer to a pointer to a metadata struct. If *pm is NULL - * a metadata struct is allocated and put in *pm. - * @param key tag key to add to *pm (will be av_strduped) - * @param value tag value to add to *pm (will be av_strduped) - * @return >= 0 on success otherwise an error code <0 - * @deprecated Use av_metadata_set2() instead. - *) -function av_metadata_set(var pm: PAVMetadata; key: {const} PAnsiChar; value: {const} PAnsiChar): cint; - cdecl; external av__format; deprecated; -{$ENDIF} - (** * Set the given tag in *pm, overwriting an existing tag. * @@ -261,7 +434,9 @@ procedure av_metadata_copy(var dst: PAVDictionary; src: PAVDictionary; flags: ci *) procedure av_metadata_free(var m: PAVDictionary); cdecl; external av__format; deprecated; - +(** + * @} + *) {$ENDIF} (* packet functions *) @@ -338,7 +513,7 @@ 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. +/// Demuxer will use avio_open, 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. *) @@ -350,7 +525,15 @@ const AVFMT_TS_DISCONT = $0200; (**< Format allows timestamp discontinuities. *) AVFMT_VARIABLE_FPS = $0400; (**< Format allows variable fps. *) AVFMT_NODIMENSIONS = $0800; (**< Format does not need width/height *) - + AVFMT_NOSTREAMS = $1000; (**< Format does not require any streams *) + AVFMT_NOBINSEARCH = $2000; (**< Format does not allow to fallback to binary search via read_timestamp *) + AVFMT_NOGENSEARCH = $4000; (**< Format does not allow to fallback to generic search *) + AVFMT_NO_BYTE_SEEK = $8000; (**< Format does not allow seeking by bytes *) + AVFMT_ALLOW_FLUSH = $10000; (**< Format allows flushing. If not set, the muxer will not receive a NULL packet in the write_packet function. *) + AVFMT_TS_NONSTRICT = $8000000; (**< Format does not require strictly + increasing timestamps, but they must + still be monotonic *) + // used by AVIndexEntry AVINDEX_KEYFRAME = $0001; @@ -370,6 +553,8 @@ const 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 AVFMT_FLAG_RTP_HINT = $0040; ///< Add RTP hinting to the output file + MAX_STD_TIMEBASES = (60*12+5); + // used by AVStream MAX_REORDER_DELAY = 16; @@ -409,6 +594,7 @@ type PAVInputFormat = ^TAVInputFormat; PAVIndexEntry = ^TAVIndexEntry; + PPAVStream = ^PAVStream; PAVStream = ^TAVStream; PAVPacketList = ^TAVPacketList; @@ -432,20 +618,6 @@ type s_conv: {const} PAVMetadataConv; end; - PAVChapter = ^TAVChapter; - TAVChapter = record - id: cint; ///< unique ID to identify the chapter - time_base: TAVRational; ///< time base in which the start/end timestamps are specified - start, end_: cint64; ///< chapter start/end time in time_base units -{$IF FF_API_OLD_METADATA} - title: PAnsiChar; ///< chapter title -{$ENDIF} - metadata: PAVMetadata; - end; - - TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter; - PAVChapterArray = ^TAVChapterArray; - TAVFormatParameters = record time_base: TAVRational; sample_rate: cint; @@ -465,11 +637,13 @@ type unsigned int prealloced_context:1; } bf_flags: byte; // 0:mpeg2ts_raw/1:mpeg2ts_compute_pcr/2:initial_pause/3:prealloced_context - video_codec_id: TCodecID; - audio_codec_id: TCodecID; end; - TAVOutputFormat = record +(** + * @addtogroup lavf_encoding + * @{ + *) + TAVOutputFormat = record name: PAnsiChar; (** * Descriptive name for the format, meant to be more human-readable @@ -487,16 +661,24 @@ type audio_codec: TCodecID; (**< default audio codec *) video_codec: TCodecID; (**< default video codec *) write_header: function (c: PAVFormatContext): cint; cdecl; + (** + * Write a packet. If AVFMT_ALLOW_FLUSH is set in flags, + * pkt can be NULL in order to flush data buffered in the muxer. + * When flushing, return 0 if there still is more data to flush, + * or 1 if everything was flushed and there is no more buffered + * data. + *) write_packet: function (c: PAVFormatContext; pkt: PAVPacket): cint; cdecl; write_trailer: function (c: PAVFormatContext): cint; cdecl; - (** - * can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER - *) - flags: cint; (** - * Currently only used to set pixel format if not YUV420P. + * can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_RAWPICTURE, + * AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS, + * AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH *) - set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): cint; cdecl; + flags: cint; + + dummy: pointer; + interleave_packet: function (s: PAVFormatContext; out_: PAVPacket; in_: PAVPacket; flush: cint): cint; cdecl; @@ -508,12 +690,34 @@ type subtitle_codec: TCodecID; (**< default subtitle codec *) +{$IF FF_API_OLD_METADATA2} {const} metadata_conv: PAVMetadataConv; +{$ENDIF} - (* private fields *) + {const} priv_class: PAVClass; ///< AVClass for the private context + + (** + * Test if the given codec can be stored in this container. + * + * @return 1 if the codec is supported, 0 if it is not. + * A negative number if unknown. + *) + query_codec: function (id: TCodecID; std_compliance: cint): cint; cdecl; + + get_output_timestamp: procedure (s: PAVFormatContext; stream: cint; + dts: Pcint64; wall: Pcint64); cdecl; + + (* private fields *) next: PAVOutputFormat; end; - +(** + * @} + *) + +(** + * @addtogroup lavf_decoding + * @{ + *) TAVInputFormat = record (** * A comma separated list of short names for the format. New names @@ -576,14 +780,16 @@ type timestamp: cint64; flags: cint): cint; cdecl; (** - * Gets the next timestamp in stream[stream_index].time_base units. + * Get 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. + * Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_SHOW_IDS, + * AVFMT_GENERIC_INDEX, AVFMT_TS_DISCONT, AVFMT_NOBINSEARCH, + * AVFMT_NOGENSEARCH, AVFMT_NO_BYTE_SEEK. *) flags: cint; @@ -631,7 +837,10 @@ type (* private fields *) next: PAVInputFormat; end; - +(** + * @} + *) + TAVStreamParseType = ( AVSTREAM_PARSE_NONE, AVSTREAM_PARSE_FULL, (**< full parsing and repack *) @@ -642,8 +851,13 @@ type TAVIndexEntry = record pos: cint64; - timestamp: cint64; - { Delphi doesn't support bitfields -> use flags_size instead + timestamp: cint64; (**< + * Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are available + * when seeking to this entry. That means preferable PTS on keyframe based formats. + * But demuxers can choose to store a different timestamp, if it is more convenient for the implementation or nothing better + * is known + *) + { 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). } @@ -651,6 +865,16 @@ type min_distance: cint; (**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. *) end; + PStreamInfo = ^TStreamInfo; + TStreamInfo = record + last_dts: cint64; + duration_gcd: cint64; + duration_count: cint; + duration_error: array[0..1] of array[0..1] of array[0..MAX_STD_TIMEBASES - 1] of cdouble; + codec_info_duration: cint64; + nb_decoded_frames: cint; + end; + (** * Stream structure. * New fields can be added to the end with minor version bumps. @@ -673,32 +897,43 @@ type r_frame_rate: TAVRational; priv_data: pointer; +{$IFDEF FF_API_REORDER_PRIVATE} (* internal data used in av_find_stream_info() *) first_dts: cint64; +{$ENDIF} (** * encoding: pts generation when outputting stream *) pts: TAVFrac; + (** * This is the fundamental unit of time (in seconds) in terms * of which frame timestamps are represented. For fixed-fps content, * time base should be 1/framerate and timestamp increments should be 1. + * decoding: set by libavformat + * encoding: set by libavformat in av_write_header *) time_base: TAVRational; +{$IFDEF FF_API_REORDER_PRIVATE} pts_wrap_bits: cint; (* number of bits in pts (used for wrapping control) *) +{$ENDIF} +{$IFDEF FF_API_STREAM_COPY} (* ffmpeg.c private use *) - stream_copy: cint; (**< If set, just copy stream. *) + stream_copy: cint; (**< If set, just copy stream. *) {deprecated} +{$ENDIF} discard: TAVDiscard; ///< Selects which packets can be discarded at will and do not need to be demuxed. +{$IFDEF FF_API_AVSTREAM_QUALITY} //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; + quality: cfloat; {deprecated} +{$ENDIF} (** - * Decoding: pts of the first frame of the stream, in stream time base. + * Decoding: pts of the first frame of the stream in presentation order, in stream time base. * Only set this if you are absolutely 100% sure that the value you set * it to really is the pts of the first frame. * This may be undefined (AV_NOPTS_VALUE). @@ -714,10 +949,7 @@ type *) duration: cint64; -{$IF FF_API_OLD_METADATA} - language: array [0..3] of PAnsiChar; (**< ISO 639-2/B 3-letter language code (empty string if undefined) *) -{$ENDIF} - +{$IFDEF FF_API_REORDER_PRIVATE} (* av_read_frame() support *) need_parsing: TAVStreamParseType; parser: PAVCodecParserContext; @@ -730,17 +962,16 @@ type support seeking natively. *) nb_index_entries: cint; index_entries_allocated_size: cuint; +{$ENDIF} nb_frames: cint64; ///< number of frames in this stream if known or 0 - unused: array [0..4] of cint64; -{$IF FF_API_OLD_METADATA} - filename: PAnsiChar; (**< source filename of the stream *) -{$ENDIF} - disposition: cint; (**< AV_DISPOSITION_* bitfield *) + +{$IFDEF FF_API_REORDER_PRIVATE} probe_data: TAVProbeData; pts_buffer: array [0..MAX_REORDER_DELAY] of cint64; +{$ENDIF} (** * sample aspect ratio (0 if unknown) @@ -749,8 +980,9 @@ type *) sample_aspect_ratio: TAVRational; - metadata: PAVMetadata; + metadata: PAVDictionary; +{$IFDEF FF_API_REORDER_PRIVATE} {* 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; @@ -775,53 +1007,188 @@ type (** * 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* + * Used internally, NOT PART OF PUBLIC API, do not read or + * write from outside of libav* *) last_in_packet_buffer: PAVPacketList; +{$ENDIF} (** * Average framerate *) avg_frame_rate: TAVRational; - (** + (***************************************************************** + * All fields below this line are not part of the public API. They + * may not be used outside of libavformat and can be changed and + * removed at will. + * New public fields should be added right above. + ***************************************************************** + *) + + (** * Number of frames that have been demuxed during av_find_stream_info() *) codec_info_nb_frames: cint; + + (** + * Stream Identifier + * This is the MPEG-TS stream identifier +1 + * 0 means unknown + *) + stream_identifier: cint; + + interleaver_chunk_size: cint64; + interleaver_chunk_duration: cint64; + + (** + * Stream information used internally by av_find_stream_info() + *) + info: PStreamInfo; + + (** + * flag to indicate that probing is requested + * NOT PART OF PUBLIC API + *) + request_probe: cint; +{$IFNDEF FF_API_REORDER_PRIVATE} + {const} cur_ptr: PByte; + cur_len: cint; + cur_pkt: TAVPacket; + + // 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; + first_dts: cint64; + cur_dts: cint64; + last_IP_duration: cint; + last_IP_pts: cint64; + + (** + * Number of packets to buffer for codec probing + *) + probe_packets: cint; + + (** + * last packet in packet_buffer for this stream when muxing. + *) + last_in_packet_buffer: PAVPacketList; + probe_data: TAVProbeData; + pts_buffer: array [0..MAX_REORDER_DELAY] of cint64; + (* av_read_frame() support *) + need_parsing: TAVStreamParseType; + parser: PAVCodecParserContext; + + index_entries: PAVIndexEntry; (**< Only used if the format does not + support seeking natively. *) + nb_index_entries: cint; + index_entries_allocated_size: cuint; + + pts_wrap_bits: cint; (**< number of bits in pts (used for wrapping control) *) +{$ENDIF} 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; + flags: cint; + discard: TAVDiscard; ///< selects which program to discard and which to feed to the caller + stream_index: Pcuint; + nb_stream_indexes: cuint; + metadata: PAVDictionary; + + program_num: cint; + pmt_pid: cint; + pcr_pid: cint; + end; (*AVProgram*) + + 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 + metadata: PAVDictionary; + end; (*AVChapter*) + + TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter; + PAVChapterArray = ^TAVChapterArray; + (** * 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*. + * sizeof(AVFormatContext) must not be used outside libav*, use + * avformat_alloc_context() to create an AVFormatContext. *) TAVFormatContext = record + (** + * A class for logging and AVOptions. Set by avformat_alloc_context(). + * Exports (de)muxer private options if they exist. + *) av_class: PAVClass; (**< Set by avformat_alloc_context. *) - (* Can only be iformat or oformat, not both at the same time. *) + + (** + * Can only be iformat or oformat, not both at the same time. + * + * decoding: set by avformat_open_input(). + * encoding: set by the user. + *) iformat: PAVInputFormat; oformat: PAVOutputFormat; + + (** + * Format private data. This is an AVOptions-enabled struct + * if and only if iformat/oformat.priv_class is not NULL. + *) priv_data: pointer; - pb: PByteIOContext; + (* + * I/O context. + * + * decoding: either set by the user before avformat_open_input() (then + * the user must close it manually) or set by avformat_open_input(). + * encoding: set by the user. + * + * Do NOT set this field if AVFMT_NOFILE flag is set in + * iformat/oformat.flags. In such a case, the (de)muxer will handle + * I/O in some other way and this field will be NULL. + *) + pb: PByteIOContext; + (** + * A list of all streams in the file. New streams are created with + * avformat_new_stream(). + * + * decoding: streams are created by libavformat in avformat_open_input(). + * If AVFMTCTX_NOHEADER is set in ctx_flags, then new streams may also + * appear in av_read_frame(). + * encoding: streams are created by the user before avformat_write_header(). + *) nb_streams: cuint; - streams: array [0..MAX_STREAMS - 1] of PAVStream; + streams: PPAVStream; + filename: array [0..1023] of AnsiChar; (* input or output filename *) (* stream info *) - timestamp: cint64; -{$IF 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 *) +{$IFDEF FF_API_TIMESTAMP} + (** + * @deprecated use 'creation_time' metadata tag instead + *) + timestamp: cint64; {deprecated} {$ENDIF} +{$IFDEF FF_API_REORDER_PRIVATE} ctx_flags: cint; (**< Format-specific flags, see AVFMTCTX_xx *) (* private data for pts handling (do not modify directly). *) (** @@ -830,6 +1197,7 @@ type * streams. *) packet_buffer: PAVPacketList; +{$ENDIF} (** * Decoding: position of the first frame of the component, in @@ -844,10 +1212,14 @@ type * AVStream values if not set. *) duration: cint64; + +{$IFDEF FF_API_FILESIZE} (** * decoding: total file size, 0 if unknown *) file_size: cint64; +{$ENDIF} + (** * Decoding: total stream bitrate in bit/s, 0 if not * available. Never set it directly if the file_size and the @@ -855,28 +1227,42 @@ type *) bit_rate: cint; +{$IFDEF FF_API_REORDER_PRIVATE} (* av_read_frame() support *) cur_st: PAVStream; - cur_ptr_deprecated: pbyte; - cur_len_deprecated: cint; - cur_pkt_deprecated: TAVPacket; (* av_seek_frame() support *) data_offset: cint64; (**< offset of the first packet *) - index_built: cint; +{$ENDIF} - mux_rate: cint; +{$IFDEF FF_API_MUXRATE} + (** + * use mpeg muxer private options instead + *) + mux_rate: cint; {deprecated} +{$ENDIF} packet_size: cuint; - preload: cint; +{$IFDEF FF_API_PRELOAD} + preload: cint; {deprecated} +{$ENDIF} max_delay: cint; +{$IFDEF FF_API_LOOP_OUTPUT} (** * number of times to loop output in formats that support it + * + * @deprecated use the 'loop' private option in the gif muxer. *) loop_output: cint; +{$ENDIF} flags: cint; - loop_input: cint; +{$IFDEF FF_API_LOOP_INPUT} + (** + * @deprecated, use the 'loop' img2 demuxer private option. + *) + loop_input: cint; {deprecated} +{$ENDIF} (** * decoding: size of data to probe; encoding: unused. @@ -930,6 +1316,7 @@ type * obtained from realtime capture devices. *) max_picture_buffer: cuint; + nb_chapters: cuint; chapters: PAVChapterArray; @@ -949,13 +1336,15 @@ type packet_buffer_end: PAVPacketList; - metadata: PAVMetadata; + metadata: PAVDictionary; +{$IFDEF FF_API_REORDER_PRIVATE} (** * Remaining size available for raw_packet_buffer, in bytes. * NOT PART OF PUBLIC API *) raw_packet_buffer_remaining_size: cint; +{$ENDIF} (** * Start time of the stream in real world time, in microseconds @@ -966,199 +1355,280 @@ type *) start_time_realtime: cint64; - end; + (** + * decoding: number of frames used to probe fps + *) + fps_probe_size: cint; - (** - * 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 FF_API_OLD_METADATA} - provider_name : PAnsiChar; ///< network name for DVB streams - name : PAnsiChar; ///< service name for DVB streams + (** + * Error recognition; higher values will detect more errors but may + * misdetect some more or less valid parts as errors. + * - encoding: unused + * - decoding: Set by user. + *) + error_recognition: cint; + + (** + * Custom interrupt callbacks for the I/O layer. + * + * decoding: set by the user before avformat_open_input(). + * encoding: set by the user before avformat_write_header() + * (mainly useful for AVFMT_NOFILE formats). The callback + * should also be passed to avio_open2() if it's used to + * open the file. + *) + interrupt_callback: TAVIOInterruptCB; + + (** + * Transport stream id. + * This will be moved into demuxer private options. Thus no API/ABI compatibility + *) + ts_id: cint; + + (** + * Audio preload in microseconds. + * Note, not all formats support this and unpredictable things may happen if it is used when not supported. + * - encoding: Set by user via AVOptions (NO direct access) + * - decoding: unused + *) + audio_preload: cint; + + (** + * Max chunk time in microseconds. + * Note, not all formats support this and unpredictable things may happen if it is used when not supported. + * - encoding: Set by user via AVOptions (NO direct access) + * - decoding: unused + *) + max_chunk_duration: cint; + + (** + * Max chunk size in bytes + * Note, not all formats support this and unpredictable things may happen if it is used when not supported. + * - encoding: Set by user via AVOptions (NO direct access) + * - decoding: unused + *) + max_chunk_size: cint; + + (***************************************************************** + * All fields below this line are not part of the public API. They + * may not be used outside of libavformat and can be changed and + * removed at will. + * New public fields should be added right above. + ***************************************************************** + *) +{$IFNDEF FF_API_REORDER_PRIVATE} + (** + * 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; + (** + * Remaining size available for raw_packet_buffer, in bytes. + *) + raw_packet_buffer_remaining_size: cint; + + (** + * 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; + packet_buffer_end_: PAVPacketList; + + (* av_read_frame() support *) + cur_st: PAVStream; + + (* av_seek_frame() support *) + data_offset: cint64; (**< offset of the first packet *) {$ENDIF} - flags : cint; - discard : TAVDiscard; ///< selects which program to discard and which to feed to the caller - stream_index : PCardinal; - nb_stream_indexes : PCardinal; - metadata : PAVMetadata; end; TAVPacketList = record pkt: TAVPacket; next: PAVPacketList; - end; + end; (*AVPacketList*) (** - * 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 + * This function is provided for compatibility reason and currently does nothing. *) -procedure av_metadata_conv(ctx: PAVFormatContext; {const} d_conv: PAVMetadataConv; - {const} s_conv: PAVMetadataConv); - cdecl; external av__format; +procedure av_metadata_conv(ctx: PAVFormatContext; {const} d_conv: PAVMetadataConv; {const} s_conv: PAVMetadataConv); + cdecl; external av__format; deprecated; -{ -var - first_iformat: PAVInputFormat; external av__format; - first_oformat: PAVOutputFormat; external av__format; -} (** - * 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. + * @defgroup lavf_core Core functions + * @ingroup libavf + * + * Functions for querying libavformat capabilities, allocating core structures, + * etc. + * @{ *) -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. + * Return the LIBAVFORMAT_VERSION_INT constant. *) -function av_oformat_next(f: PAVOutputFormat): PAVOutputFormat; - cdecl; external av__format; +function avformat_version(): cuint; + cdecl; external av__format; -function av_guess_image2_codec(filename: {const} PAnsiChar): TCodecID; - cdecl; external av__format; +(** + * Return the libavformat build-time configuration. + *) +function avformat_configuration(): {const} PansiChar; + cdecl; external av__format; -(* XXX: Use automatic init with either ELF sections or C file parser *) -(* modules. *) +(** + * Return the libavformat license. + *) +function avformat_license(): {const} PansiChar; + cdecl; external av__format; -(* utils.c *) -procedure av_register_input_format(format: PAVInputFormat); +(** + * 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; +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: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; - cdecl; external av__format; deprecated; - (** - * 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. + * Do global initialization of network components. This is optional, + * but recommended, since it avoids the overhead of implicitly + * doing the setup for each session. * - * @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 + * Calling this function will become mandatory if using network + * protocols at some major version bump. *) +function avformat_network_init(): cint; + cdecl; external av__format; + (** - * @deprecated Use av_guess_format() instead. + * Undo the initialization done by avformat_network_init. *) -function guess_format(short_name: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; - cdecl; external av__format; deprecated; - -function av_guess_format(short_name: PAnsiChar; - filename: PAnsiChar; - mime_type: PAnsiChar): PAVOutputFormat; +function avformat_network_deinit(): cint; cdecl; external av__format; (** - * Guess the codec ID based upon muxer and filename. + * 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_guess_codec(fmt: PAVOutputFormat; short_name: PAnsiChar; - filename: PAnsiChar; mime_type: PAnsiChar; - type_: TCodecType): TCodecID; - cdecl; external av__format; +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; (** - * 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 + * Allocate an AVFormatContext. + * Can be freed with av_free() but do not forget to free everything you + * explicitly allocated as well! *) -procedure av_hex_dump(f: PAVFile; buf: PByteArray; size: cint); +function avformat_alloc_context(): PAVFormatContext; cdecl; external av__format; (** - * 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 + * Free an AVFormatContext and all its streams. + * @param s context to free *) -procedure av_hex_dump_log(avcl: Pointer; level: cint; buf: PByteArray; size: cint); +procedure avformat_free_context(s: PAVFormatContext); cdecl; external av__format; (** - * Send a nice dump of a packet to the specified file stream. + * Get the AVClass for AVFormatContext. It can be used in combination with + * AV_OPT_SEARCH_FAKE_OBJ for examining options. * - * @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. + * @see av_opt_find(). *) -procedure av_pkt_dump(f: PAVFile; pkt: PAVPacket; dump_payload: cint); +function avformat_get_class(): {const}PAVClass; cdecl; external av__format; (** - * Send a nice dump of a packet to the log. + * Add a new stream to a media file. * - * @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. + * When demuxing, it is called by the demuxer in read_header(). If the + * flag AVFMTCTX_NOHEADER is set in s.ctx_flags, then it may also + * be called in read_packet(). + * + * When muxing, should be called by the user before avformat_write_header(). + * + * @param c If non-NULL, the AVCodecContext corresponding to the new stream + * will be initialized to use this codec. This is needed for e.g. codec-specific + * defaults to be set, so codec should be provided if it is known. + * + * @return newly created stream or NULL on error. *) -procedure av_pkt_dump_log(avcl: Pointer; level: cint; pkt: PAVPacket; dump_payload: cint); +function avformat_new_stream(s: PAVFormatContext; c: PAVCodec): PAVStream; + cdecl; external av__format; + +function av_new_program(s: PAVFormatContext; id: cint): PAVProgram; cdecl; external av__format; (** - * 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(); + +{$IFDEF FF_API_GUESS_IMG2_CODEC} +function av_guess_image2_codec(filename: {const} PAnsiChar): TCodecID; + cdecl; external av__format; +{$ENDIF} + +{$IFDEF FF_API_PKT_DUMP} +procedure av_pkt_dump(f: PAVFile; pkt: PAVPacket; dump_payload: cint); {deprecated} cdecl; external av__format; +procedure av_pkt_dump_log(avcl: Pointer; level: cint; pkt: PAVPacket; dump_payload: cint); {deprecated} + cdecl; external av__format; +{$ENDIF} +{$IFDEF FF_API_ALLOC_OUTPUT_CONTEXT} (** - * 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 + * @deprecated deprecated in favor of avformat_alloc_output_context2() *) -function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TCodecID; +function avformat_alloc_output_context({const} format: PAnsiChar; + oformat: PAVOutputFormat; + {const} filename: PAnsiChar): PAVFormatContext; cdecl; external av__format; +{$ENDIF} (** - * Getsthe codec tag for the given codec id id. - * If no codec tag is found returns 0. + * Allocate an AVFormatContext for an output format. + * avformat_free_context() can be used to free the context and + * everything allocated by the framework within it. * - * @param tags list of supported codec_id-codec_tag pairs, as stored - * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + * @param *ctx is set to the created format context, or to NULL in + * case of failure + * @param oformat format to use for allocating the context, if NULL + * format_name and filename are used instead + * @param format_name the name of output format to use for allocating the + * context, if NULL filename is used instead + * @param filename the name of the filename to use for allocating the + * context, may be NULL + * @return >= 0 in case of success, a negative AVERROR code in case of + * failure *) -function av_codec_get_tag(var tags: PAVCodecTag; id: TCodecID): cuint; +function avformat_alloc_output_context2(ctx: PPAVFormatContext; oformat: PAVOutputFormat; + {const} format_name: PAnsiChar; {const} filename: PAnsiChar): cint; cdecl; external av__format; -(* media file input *) +(** + * @addtogroup lavf_decoding + * @{ + *) (** * Find AVInputFormat based on the short name of the input format. @@ -1190,6 +1660,17 @@ function av_probe_input_format2(pd: PAVProbeData; is_opened: cint; score_max: PC cdecl; external av__format; (** + * Guess the file format. + * + * @param is_opened Whether the file is already opened; determines whether + * demuxers with or without AVFMT_NOFILE are probed. + * @param score_ret The score of the best detection. + *) +function av_probe_input_format3(pd: PAVProbeData; is_opened: cint; score_ret: Pcint): PAVInputFormat; + cdecl; external av__format; + +{$IFDEF FF_API_FORMAT_PARAMETERS} +(** * Allocate all the structures needed to read an input stream. * This does not open the needed codecs for decoding the stream[s]. *) @@ -1214,20 +1695,50 @@ function av_open_input_file(var ic_ptr: PAVFormatContext; filename: PAnsiChar; fmt: PAVInputFormat; buf_size: cint; ap: PAVFormatParameters): cint; cdecl; external av__format; +{$ENDIF} (** - * Allocate an AVFormatContext. - * Can be freed with av_free() but do not forget to free everything you - * explicitly allocated as well! + * Open an input stream and read the header. The codecs are not opened. + * The stream must be closed with av_close_input_file(). + * + * @param ps Pointer to user-supplied AVFormatContext (allocated by avformat_alloc_context). + * May be a pointer to NULL, in which case an AVFormatContext is allocated by this + * function and written into ps. + * Note that a user-supplied AVFormatContext will be freed on failure. + * @param filename Name of the stream to open. + * @param fmt If non-NULL, this parameter forces a specific input format. + * Otherwise the format is autodetected. + * @param options A dictionary filled with AVFormatContext and demuxer-private options. + * On return this parameter will be destroyed and replaced with a dict containing + * options that were not found. May be NULL. + * + * @return 0 on success, a negative AVERROR on failure. + * + * @note If you want to use custom IO, preallocate the format context and set its pb field. *) -function avformat_alloc_context(): PAVFormatContext; +function avformat_open_input(ps: {PPAVFormatContext} pointer; {const} filename: PAnsiChar; fmt: PAVInputFormat; options: {PPAVDictionary} pointer): cint; cdecl; external av__format; +function av_demuxer_open(ic: PAVFormatContext; ap: TAVFormatParameters): cint; + cdecl; external av__format; + +{$IFDEF FF_API_FORMAT_PARAMETERS} (** - * @deprecated Use avformat_alloc_context() instead. + * 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_alloc_format_context(): PAVFormatContext; +function av_find_stream_info(ic: PAVFormatContext): cint; {deprecated} cdecl; external av__format; +{$ENDIF} (** * Read packets of a media file to get stream information. This @@ -1238,11 +1749,64 @@ function av_alloc_format_context(): PAVFormatContext; * examined packets may be buffered for later processing. * * @param ic media file handle + * @param options If non-NULL, an ic.nb_streams long array of pointers to + * dictionaries, where i-th member contains options for + * codec corresponding to i-th stream. + * On return each dictionary will be filled with options that were not found. * @return >=0 if OK, AVERROR_xxx on error + * + * @note this function isn't guaranteed to open all the codecs, so + * options being non-empty at return is a perfectly normal behavior. + * * @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; +function avformat_find_stream_info(ic: PAVFormatContext; options: {PPAVDictionary} pointer): cint; + cdecl; external av__format; + +(** + * Find the programs which belong to a given stream. + * + * @param ic media file handle + * @param last the last found program, the search will start after this + * program, or from the beginning if it is NULL + * @param s stream index + * @return the next program which belongs to s, NULL if no program is found or + * the last program is not among the programs of ic. + *) +function av_find_program_from_stream(ic: PAVFormatContext; last: PAVProgram; s: cint): PAVProgram; + cdecl; external av__format; + +(** + * Find the "best" stream in the file. + * The best stream is determined according to various heuristics as the most + * likely to be what the user expects. + * If the decoder parameter is non-NULL, av_find_best_stream will find the + * default decoder for the stream's codec; streams for which no decoder can + * be found are ignored. + * + * @param ic media file handle + * @param type stream type: video, audio, subtitles, etc. + * @param wanted_stream_nb user-requested stream number, + * or -1 for automatic selection + * @param related_stream try to find a stream related (eg. in the same + * program) to this one, or -1 if none + * @param decoder_ret if non-NULL, returns the decoder for the + * selected stream + * @param flags flags; none are currently defined + * @return the non-negative stream number in case of success, + * AVERROR_STREAM_NOT_FOUND if no stream with the requested type + * could be found, + * AVERROR_DECODER_NOT_FOUND if streams were found but no decoder + * @note If av_find_best_stream returns successfully and decoder_ret is not + * NULL, then *decoder_ret is guaranteed to be set to a valid AVCodec. + *) +function av_find_best_stream(ic: PAVFormatContext; + type_: TAVMediaType; + wanted_stream_nb: cint; + related_stream: cint; + decoder_ret: {PPAVCodec} pointer; + flags: cint): cint; cdecl; external av__format; (** @@ -1260,11 +1824,16 @@ function av_read_packet(s: PAVFormatContext; var pkt: TAVPacket): cint; (** * Return the next frame of a stream. + * This function returns what is stored in the file, and does not validate + * that what is there are valid frames for the decoder. It will split what is + * stored in the file into frames and return one for each call. It will not + * omit invalid data between valid frames so as to give the decoder the maximum + * information possible for decoding. * * 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 + * exactly one frame. For audio, it contains an integer number of * frames if each frame has a known fixed size (e.g. PCM or ADPCM * data). If the audio frames have a variable size (e.g. MPEG audio), * then it contains one frame. @@ -1296,40 +1865,6 @@ function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint6 cdecl; external av__format; (** - * 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; - -(** * Start playing a network-based stream (e.g. RTSP stream) at the * current position. *) @@ -1344,22 +1879,39 @@ function av_read_play(s: PAVFormatContext): cint; function av_read_pause(s: PAVFormatContext): cint; cdecl; external av__format; +{$IFDEF FF_API_FORMAT_PARAMETERS} (** * Free a AVFormatContext allocated by av_open_input_stream. * @param s context to free + * @deprecated use av_close_input_file() *) procedure av_close_input_stream(s: PAVFormatContext); cdecl; external av__format; +{$ENDIF} +{$IFDEF FF_API_CLOSE_INPUT_FILE} (** + * @deprecated use avformat_close_input() * Close a media file (but not its codecs). * * @param s media file handle *) procedure av_close_input_file(s: PAVFormatContext); cdecl; external av__format; +{$ENDIF} (** + * Close an opened input AVFormatContext. Free it and all its contents + * and set *s to NULL. + *) +procedure avformat_close_input(s: PPAVFormatContext); + cdecl; external av__format; +(** + * @} + *) + +{$IFDEF FF_API_NEW_STREAM} +(** * Add a new stream to a media file. * * Can only be called in the read_header() function. If the flag @@ -1371,39 +1923,16 @@ procedure av_close_input_file(s: PAVFormatContext); *) function av_new_stream(s: PAVFormatContext; id: cint): PAVStream; cdecl; external av__format; +{$ENDIF} -function av_new_program(s: PAVFormatContext; id: cint): PAVProgram; - cdecl; external av__format; - -(** - * Add a new chapter. - * This function is NOT part of the public API - * and should ONLY be used by demuxers. - * - * @param s media file handle - * @param id unique ID for this chapter - * @param start chapter start time in time_base units - * @param end chapter end time in time_base units - * @param title chapter title - * - * @return AVChapter or NULL on error - *) -function ff_new_chapter(s: PAVFormatContext; id: cint; time_base: TAVRational; - start, end_: cint64; title: {const} PAnsiChar): PAVChapter; - cdecl; external av__format; - +{$IFDEF FF_API_SET_PTS_INFO} (** - * 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) + * @deprecated this function is not supposed to be called outside of lavf *) procedure av_set_pts_info(s: PAVStream; pts_wrap_bits: cint; pts_num: cuint; pts_den: cuint); cdecl; external av__format; +{$ENDIF} const AVSEEK_FLAG_BACKWARD = 1; ///< seek backward @@ -1411,114 +1940,55 @@ const AVSEEK_FLAG_ANY = 4; ///< seek to any frame, even non-keyframes AVSEEK_FLAG_FRAME = 8; -function av_find_default_stream_index(s: PAVFormatContext): cint; - cdecl; external av__format; - -(** - * Get the index for a specific timestamp. - * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond - * to the timestamp which is <= the requested one, if backward - * is 0, then it will be >= - * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise - * @return < 0 if no such timestamp could be found - *) -function av_index_search_timestamp(st: PAVStream; timestamp: cint64; flags: cint): cint; - cdecl; external av__format; - -(** - * Ensure the index uses less memory than the maximum specified in - * AVFormatContext.max_index_size by discarding entries if it grows - * too large. - * This function is not part of the public API and should only be called - * by demuxers. - *) -procedure ff_reduce_index(s: PAVFormatContext; stream_index: cint); - cdecl; external av__format; - -(** - * Add an index entry into a sorted list. Update the entry if the list - * already contains it. - * - * @param timestamp timestamp in the timebase of the given stream - *) -function av_add_index_entry(st: PAVStream; pos: cint64; timestamp: cint64; - size: cint; distance: cint; flags: cint): cint; - cdecl; external av__format; - -(** - * Perform a binary search using av_index_search_timestamp() and - * AVInputFormat.read_timestamp(). - * This is not supposed to be called directly by a user application, - * but by demuxers. - * @param target_ts target timestamp in the time base of the given stream - * @param stream_index stream number - *) +{$IFDEF FF_API_SEEK_PUBLIC} function av_seek_frame_binary(s: PAVFormatContext; stream_index: cint; - target_ts: cint64; flags: cint): cint; + target_ts: cint64; flags: cint): cint; {deprecated} 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); + timestamp: cint64); {deprecated} cdecl; external av__format; 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; + read_timestamp: TReadTimestampFunc): cint64; {deprecated} cdecl; external av__format; +{$ENDIF} +{$IFDEF FF_API_FORMAT_PARAMETERS} (** * media file output *) function av_set_parameters(s: PAVFormatContext; ap: PAVFormatParameters): cint; cdecl; external av__format; - +{$ENDIF} + (** - * Split a URL string into components. + * @addtogroup lavf_encoding + * @{ + *) +(** + * Allocate the stream private data and write the stream header to + * an output media file. * - * 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 s Media file handle, must be allocated with avformat_alloc_context(). + * Its oformat field must be set to the desired output format; + * Its pb field must be set to an already openened AVIOContext. + * @param options An AVDictionary filled with AVFormatContext and muxer-private options. + * On return this parameter will be destroyed and replaced with a dict containing + * options that were not found. May be NULL. * - * @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 + * @return 0 on success, negative AVERROR on failure. + * + * @see av_opt_find, av_dict_set, avio_open, av_oformat_next. *) -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); +function avformat_write_header(s: PAVFormatContext; options: {PPAVDictionary} pointer): cint; cdecl; external av__format; (** @@ -1528,23 +1998,21 @@ procedure av_url_split(proto: PAnsiChar; proto_size: cint; * @param s media file handle * @return 0 if OK, AVERROR_xxx on error *) -function av_write_header(s: PAVFormatContext): cint; - cdecl; external av__format; - +{$IFDEF FF_API_FORMAT_PARAMETERS} (** - * 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. + * Allocate the stream private data and write the stream header to an + * output media file. + * @note: this sets stream time-bases, if possible to stream->codec->time_base + * but for some formats it might also be some other time base * * @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 + * @return 0 if OK, AVERROR_xxx on error + * + * @deprecated use avformat_write_header. *) -function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; +function av_write_header(s: PAVFormatContext): cint; {deprecated} cdecl; external av__format; +{$ENDIF} (** * Write a packet to an output media file ensuring correct interleaving. @@ -1557,9 +2025,18 @@ function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; * 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 + * @param pkt The packet containing the data to be written. Libavformat takes + * ownership of the data and will free it when it sees fit using the packet's + * @ref AVPacket.destruct "destruct" field. The caller must not access the data + * after this function returns, as it may already be freed. + * Packet's @ref AVPacket.stream_index "stream_index" field must be set to the + * index of the corresponding stream in @ref AVFormatContext.streams + * "s.streams". + * It is very strongly recommended that timing information (@ref AVPacket.pts + * "pts", @ref AVPacket.dts "dts" @ref AVPacket.duration "duration") is set to + * correct values. + * + * @return 0 on success, a negative AVERROR on error. *) function av_interleaved_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; cdecl; external av__format; @@ -1584,22 +2061,6 @@ function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket; cdecl; external av__format; (** - * 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; -} - -(** * Write the stream trailer to an output media file and free the * file private data. * @@ -1611,83 +2072,227 @@ procedure ff_interleave_add_packet(s: PAVFormatContext; function av_write_trailer(s: pAVFormatContext): cint; cdecl; external av__format; -procedure dump_format(ic: PAVFormatContext; index: cint; url: PAnsiChar; - is_output: cint); +(** + * 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 + *) +function av_guess_format(short_name: PAnsiChar; + filename: PAnsiChar; + mime_type: PAnsiChar): PAVOutputFormat; cdecl; external av__format; (** - * Parse width and height out of string str. - * @deprecated Use av_parse_video_frame_size instead. + * Guess the codec ID based upon muxer and filename. *) -function parse_image_size(width_ptr: PCint; height_ptr: PCint; - str: PAnsiChar): cint; - cdecl; external av__format; deprecated; +function av_guess_codec(fmt: PAVOutputFormat; short_name: PAnsiChar; + filename: PAnsiChar; mime_type: PAnsiChar; + type_: TCodecType): TCodecID; + cdecl; external av__format; (** - * Convert framerate from a string to a fraction. - * @deprecated Use av_parse_video_frame_rate instead. + * Get timing information for the data currently output. + * The exact meaning of "currently output" depends on the format. + * It is mostly relevant for devices that have an internal buffer and/or + * work in real time. + * @param s media file handle + * @param stream stream in the media file + * @param dts[out] DTS of the last packet output for the stream, in stream + * time_base units + * @param wall[out] absolute time when that packet whas output, + * in microsecond + * @return 0 if OK, AVERROR(ENOSYS) if the format does not support it + * Note: some formats or devices may not allow to measure dts and wall + * atomically. *) -function parse_frame_rate(frame_rate: PCint; frame_rate_base: PCint; - arg: PByteArray): cint; - cdecl; external av__format; deprecated; +function av_get_output_timestamp(s: PAVFormatContext; stream: cint; + dts: Pcint64; wall: Pcint64): cint; + cdecl; external av__format; + (** - * 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. + * @} + *) + + +(** + * @defgroup lavf_misc Utility functions + * @ingroup libavf + * @{ + * + * Miscelaneous utility functions related to both muxing and demuxing + * (or neither). + *) + +(** + * 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_dump2, av_pkt_dump_log2 *) -function parse_date(datestr: PAnsiChar; duration: cint): cint64; +procedure av_hex_dump(f: PAVFile; buf: PByteArray; size: cint); {<-?FILE} cdecl; external av__format; (** - * Get the current time in microseconds. + * 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 *) -function av_gettime(): cint64; +procedure av_hex_dump_log(avcl: Pointer; level: cint; buf: PByteArray; size: cint); cdecl; external av__format; -(* ffm-specific for ffserver *) -const - FFM_PACKET_SIZE = 4096; +(** + * 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. + * @param st AVStream that the packet belongs to + *) +procedure av_pkt_dump2(f: PAVFile; pkt: PAVPacket; dump_payload: cint; st: PAVStream); + cdecl; external av__format; + +(** + * 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. + * @param st AVStream that the packet belongs to + *) +procedure av_pkt_dump_log2(avcl: pointer; level: cint; pkt: PAVPacket; dump_payload: cint; + st: PAVStream); + cdecl; external av__format; + +(** + * 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; + +function av_find_default_stream_index(s: PAVFormatContext): cint; + cdecl; external av__format; -function ffm_read_write_index(fd: cint): cint64; +(** + * 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; -function ffm_write_write_index(fd: cint; pos: cint64): cint; +(** + * 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; -procedure ffm_set_write_index(s: PAVFormatContext; pos: cint64; file_size: cint64); +(** + * 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; +{$IFDEF FF_API_DUMP_FORMAT} (** - * Attempt to find a specific tag in a URL. + * @deprecated Deprecated in favor of av_dump_format(). + *) +procedure dump_format(ic: PAVFormatContext; index: cint; url: PAnsiChar; + is_output: cint); + cdecl; external av__format; +{$ENDIF} + +procedure av_dump_format(ic: PAVFormatContext; index: cint; url: PAnsiChar; + is_output: cint); + cdecl; external av__format; + +{$IFDEF FF_API_PARSE_DATE} +(** + * Parse datestr and return a corresponding number of microseconds. * - * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. - * Return 1 if found. + * @param datestr String representing a date or a duration. + * See av_parse_time() for the syntax of the provided string. + * @deprecated in favor of av_parse_time() + *) +function parse_date(datestr: PAnsiChar; duration: cint): cint64; {deprecated} + cdecl; external av__format; +{$ENDIF} + +(** + * Get the current time in microseconds. + *) +function av_gettime(): cint64; + cdecl; external av__format; + +{$IFDEF FF_API_FIND_INFO_TAG} +(** + * @deprecated use av_find_info_tag in libavutil instead. *) function find_info_tag(arg: PAnsiChar; arg_size: cint; tag1: PAnsiChar; info: PAnsiChar): cint; cdecl; external av__format; +{$ENDIF} (** * Return in 'buf' the path with '%d' replaced by a number. @@ -1723,13 +2328,18 @@ function av_filename_number_test(filename: PAnsiChar): cint; * all the contexts in the array (an AVCodecContext per RTP stream) * must contain only one AVStream. * @param n_files number of AVCodecContexts contained in ac - * @param buff buffer where the SDP will be stored (must be allocated by - * the caller) + * @param buf buffer where the SDP will be stored (must be allocated by + * the caller) * @param size the size of the buffer * @return 0 if OK, AVERROR_xxx on error *) +function av_sdp_create(ac: pointer; n_files: cint; buf: PAnsiChar; size: cint): cint; + cdecl; external av__format; + +{$IFDEF FF_API_SDP_CREATE} function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PByteArray; size: cint): cint; cdecl; external av__format; +{$ENDIF} (** * Return a positive value if the given filename has one of the given @@ -1740,6 +2350,47 @@ function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PByteArray; function av_match_ext(filename: {const} Pchar; extensions: {const} Pchar): cint; cdecl; external av__format; +(** + * Test if the given container can store a codec. + * + * @param std_compliance standards compliance level, one of FF_COMPLIANCE_* + * + * @return 1 if codec with ID codec_id can be stored in ofmt, 0 if it cannot. + * A negative number if this information is not available. + *) +function avformat_query_codec(ofmt: PAVOutputFormat; codec_id: TCodecID; std_compliance: cint): cint; + cdecl; external av__format; + +(** + * @defgroup riff_fourcc RIFF FourCCs + * @{ + * Get the tables mapping RIFF FourCCs to libavcodec CodecIDs. The tables are + * meant to be passed to av_codec_get_id()/av_codec_get_tag() as in the + * following code: + * @code + * uint32_t tag = MKTAG('H', '2', '6', '4'); + * const struct AVCodecTag *table[] = { avformat_get_riff_video_tags(), 0 }; + * enum CodecID id = av_codec_get_id(table, tag); + * @endcode + *) +(** + * @return the table mapping RIFF FourCCs for video to libavcodec CodecID. + *) +function avformat_get_riff_video_tags(): {const} PAVCodecTag; + cdecl; external av__format; +(** + * @return the table mapping RIFF FourCCs for audio to CodecID. + *) +function avformat_get_riff_audio_tags(): {const} PAVCodecTag; + cdecl; external av__format; +(** + * @} + *) + +(** + * @} + *) + implementation end. |