diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/ffmpeg-2.2/avformat.pas | 515 |
1 files changed, 451 insertions, 64 deletions
diff --git a/src/lib/ffmpeg-2.2/avformat.pas b/src/lib/ffmpeg-2.2/avformat.pas index b97e4259..79ea4775 100644 --- a/src/lib/ffmpeg-2.2/avformat.pas +++ b/src/lib/ffmpeg-2.2/avformat.pas @@ -59,16 +59,16 @@ const *) (* Max. supported version by this header *) LIBAVFORMAT_MAX_VERSION_MAJOR = 55; - LIBAVFORMAT_MAX_VERSION_MINOR = 19; - LIBAVFORMAT_MAX_VERSION_RELEASE = 104; + LIBAVFORMAT_MAX_VERSION_MINOR = 33; + 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); (* Min. supported version by this header *) LIBAVFORMAT_MIN_VERSION_MAJOR = 55; - LIBAVFORMAT_MIN_VERSION_MINOR = 19; - LIBAVFORMAT_MIN_VERSION_RELEASE = 104; + LIBAVFORMAT_MIN_VERSION_MINOR = 33; + LIBAVFORMAT_MIN_VERSION_RELEASE = 100; LIBAVFORMAT_MIN_VERSION = (LIBAVFORMAT_MIN_VERSION_MAJOR * VERSION_MAJOR) + (LIBAVFORMAT_MIN_VERSION_MINOR * VERSION_MINOR) + (LIBAVFORMAT_MIN_VERSION_RELEASE * VERSION_RELEASE); @@ -274,6 +274,58 @@ const * * @defgroup lavf_encoding Muxing * @{ + * Muxers take encoded data in the form of @ref AVPacket "AVPackets" and write + * it into files or other output bytestreams in the specified container format. + * + * The main API functions for muxing are avformat_write_header() for writing the + * file header, av_write_frame() / av_interleaved_write_frame() for writing the + * packets and av_write_trailer() for finalizing the file. + * + * At the beginning of the muxing process, the caller must first call + * avformat_alloc_context() to create a muxing context. The caller then sets up + * the muxer by filling the various fields in this context: + * + * - The @ref AVFormatContext.oformat "oformat" field must be set to select the + * muxer that will be used. + * - Unless the format is of the AVFMT_NOFILE type, the @ref AVFormatContext.pb + * "pb" field must be set to an opened IO context, either returned from + * avio_open2() or a custom one. + * - Unless the format is of the AVFMT_NOSTREAMS type, at least one stream must + * be created with the avformat_new_stream() function. The caller should fill + * the @ref AVStream.codec "stream codec context" information, such as the + * codec @ref AVCodecContext.codec_type "type", @ref AVCodecContext.codec_id + * "id" and other parameters (e.g. width / height, the pixel or sample format, + * etc.) as known. The @ref AVCodecContext.time_base "codec timebase" should + * be set to the timebase that the caller desires to use for this stream (note + * that the timebase actually used by the muxer can be different, as will be + * described later). + * - The caller may fill in additional information, such as @ref + * AVFormatContext.metadata "global" or @ref AVStream.metadata "per-stream" + * metadata, @ref AVFormatContext.chapters "chapters", @ref + * AVFormatContext.programs "programs", etc. as described in the + * AVFormatContext documentation. Whether such information will actually be + * stored in the output depends on what the container format and the muxer + * support. + * + * When the muxing context is fully set up, the caller must call + * avformat_write_header() to initialize the muxer internals and write the file + * header. Whether anything actually is written to the IO context at this step + * depends on the muxer, but this function must always be called. Any muxer + * private options must be passed in the options parameter to this function. + * + * The data is then sent to the muxer by repeatedly calling av_write_frame() or + * av_interleaved_write_frame() (consult those functions' documentation for + * discussion on the difference between them; only one of them may be used with + * a single muxing context, they should not be mixed). Do note that the timing + * information on the packets sent to the muxer must be in the corresponding + * AVStream's timebase. That timebase is set by the muxer (in the + * avformat_write_header() step) and may be different from the timebase the + * caller set on the codec context. + * + * Once all the data has been written, the caller must call av_write_trailer() + * to flush any buffered packets and finalize the output file, then close the IO + * context (if any) and finally free the muxing context with + * avformat_free_context(). * @} * * @defgroup lavf_io I/O Read/Write @@ -381,6 +433,7 @@ type * Allocate and read the payload of a packet and initialize its fields with * default values. * + * @param s associated IO context * @param pkt packet * @param size desired payload size * @return >0 (read size) if OK, AVERROR_xxx otherwise @@ -396,6 +449,7 @@ function av_get_packet(s: PAVIOContext; var pkt: TAVPacket; size: cint): cint; * when there is no reasonable way to know (an upper bound of) * the final size. * + * @param s associated IO context * @param pkt packet * @param size amount of data to read * @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data @@ -431,10 +485,12 @@ type end; const - AVPROBE_SCORE_EXTENSION = 50; ///< score for file extension - AVPROBE_SCORE_MAX = 100; ///< maximum score - AVPROBE_SCORE_RETRY = (AVPROBE_SCORE_MAX DIV 4); - AVPROBE_PADDING_SIZE = 32; ///< extra allocated bytes at the end of the probe buffer + AVPROBE_SCORE_RETRY = (AVPROBE_SCORE_MAX DIV 4); + AVPROBE_SCORE_STREAM_RETRY = (AVPROBE_SCORE_MAX DIV 4-1); + AVPROBE_SCORE_EXTENSION = 50; ///< score for file extension + AVPROBE_SCORE_MAX = 100; ///< maximum score + + AVPROBE_PADDING_SIZE = 32; ///< extra allocated bytes at the end of the probe buffer /// Demuxer will use avio_open, no opened file should be provided by the caller. AVFMT_NOFILE = $0001; @@ -657,7 +713,30 @@ type query_codec: function (id: TAVCodecID; std_compliance: cint): cint; cdecl; get_output_timestamp: procedure (s: PAVFormatContext; stream: cint; - dts: Pcint64; wall: Pcint64); cdecl; + dts: Pcint64; wall: Pcint64); cdecl; + + (** + * Allows sending messages from application to device. + *) + control_message: function(s: PAVFormatContext; type_: cint; data: pointer; + data_size: size_t): cint; cdecl; + + (** + * Write an uncoded AVFrame. + * + * See av_write_uncoded_frame() for details. + * + * The library will free *frame afterwards, but the muxer can prevent it + * by setting the pointer to NULL. + *) + write_uncodec_frame: function(s: PAVFormatContext; stream_index: cint; + frame: ^PAVFrame; flags: cuint): cint; cdecl; + + (** + * Returns device list with it properties. + * @see avdevice_list_devices() for more details. + *) + get_device_list: function(s: PAVFormatContext; device_list: PAVDeviceInfoList): cint; cdecl; end; (** * @} @@ -789,7 +868,14 @@ type min_ts: cint64; ts: cint64; max_ts: cint64; - flags: cint): cint; cdecl; + flags: cint): cint; cdecl; + + (** + * Returns device list with it properties. + * @see avdevice_list_devices() for more details. + *) + get_device_list: function(s: PAVFormatContext; device_list: PAVDeviceInfoList): cint; cdecl; + end; (** * @} @@ -823,15 +909,21 @@ type min_distance: cint; (**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. *) end; - Tduration_error = array[0..1] of array[0..MAX_STD_TIMEBASES - 1] of cdouble; + Tduration_error = array[0..1] of array[0..MAX_STD_TIMEBASES - 1] of cdouble; PStreamInfo = ^TStreamInfo; TStreamInfo = record last_dts: cint64; duration_gcd: cint64; duration_count: cint; + rfps_duration_sum: cint64; duration_error: ^Tduration_error; codec_info_duration: cint64; codec_info_duration_fields: cint64; + (** + * 0 -> decoder has not been searched for yet. + * >0 -> decoder found + * <0 -> decoder with codec_id == -found_decoder has not been found + *) found_decoder: cint; (** @@ -946,8 +1038,14 @@ type * Stream information used internally by av_find_stream_info() *) info: PStreamInfo; - + pts_wrap_bits: cint; (**< number of bits in pts (used for wrapping control) *) + +{$IFDEF FF_API_REFERENCE_DTS} + (* a hack to keep ABI compatibility for ffmpeg and other applications, which accesses parser even + * though it should not *) + do_not_use: cint64; +{$ENDIF} // Timestamp generation support: (** @@ -957,7 +1055,6 @@ type * 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_pts: cint64; @@ -1060,6 +1157,24 @@ type *) pts_wrap_behavior: cint; + (** + * Internal data to prevent doing update_initial_durations() twice + *) + update_initial_durations_done: cint; + + (** + * Internal data to generate dts from pts + *) + pts_reorder_error: array[0..MAX_REORDER_DELAY] of cint64; + pts_reorder_error_count: array[0..MAX_REORDER_DELAY] of byte; + + (** + * Internal data to analyze DTS and detect faulty mpeg streams + *) + last_dts_for_order_check: cint64; + dts_ordered: byte; + dts_misordered: byte; + end; (** TAVStream **) (** @@ -1115,6 +1230,19 @@ type AVFMT_DURATION_FROM_BITRATE ///< Duration estimated from bitrate (less accurate) ); + PAVFormatInternal = ^TAVFormatInternal; + TAVFormatInternal = record + (** + * Number of streams relevant for interleaving. + * Muxing only. + *) + nb_interleaved_streams: cint; + inject_global_side_data: cint; + end; + + TAv_format_control_message = function (s: PAVFormatContext; type_: cint; + data: pointer; data_size: size_t): cint; cdecl; + (** * Format I/O context. * New fields can be added to the end with minor version bumps. @@ -1125,32 +1253,41 @@ type *) TAVFormatContext = record (** - * A class for logging and AVOptions. Set by avformat_alloc_context(). + * A class for logging and @ref 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. + * The input container format. * - * decoding: set by avformat_open_input(). - * encoding: set by the user. + * Demuxing only, set by avformat_open_input(). *) iformat: PAVInputFormat; + + (** + * The output container format. + * + * Muxing only, must be set by the caller before avformat_write_header(). + *) oformat: PAVOutputFormat; (** * Format private data. This is an AVOptions-enabled struct * if and only if iformat/oformat.priv_class is not NULL. + * + * - muxing: set by avformat_write_header() + * - demuxing: set by avformat_open_input() *) priv_data: pointer; (* * 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. + * - demuxing: either set by the user before avformat_open_input() (then + * the user must close it manually) or set by avformat_open_input(). + * - muxing: set by the user before avformat_write_header(). The caller must + * take care of closing / freeing the IO context. * * Do NOT set this field if AVFMT_NOFILE flag is set in * iformat/oformat.flags. In such a case, the (de)muxer will handle @@ -1162,27 +1299,43 @@ type ctx_flags: cint; (**< Format-specific flags, see AVFMTCTX_xx *) (** + * Number of elements in AVFormatContext.streams. + * + * Set by avformat_new_stream(), must not be modified by any other code. + *) + nb_streams: cuint; + + (** * 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(). + * - demuxing: 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(). + * - muxing: streams are created by the user before avformat_write_header(). + * + * Freed by libavformat in avformat_free_context(). *) - nb_streams: cuint; streams: PPAVStream; + (** + * input or output filename + * + * - demuxing: set by avformat_open_input() + * - muxing: may be set by the caller before avformat_write_header() + *) filename: array [0..1023] of AnsiChar; (* input or output filename *) (** - * Decoding: position of the first frame of the component, in + * 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. + * + * Demuxing only, set by libavformat. *) start_time: cint64; (** - * Decoding: duration of the stream, in AV_TIME_BASE fractional + * 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. @@ -1190,7 +1343,7 @@ type duration: cint64; (** - * Decoding: total stream bitrate in bit/s, 0 if not + * 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. *) @@ -1202,13 +1355,16 @@ type flags: cint; (** - * decoding: size of data to probe; encoding: unused. + * Maximum size of the data read from input for determining + * the input container format. + * Demuxing only, set by the caller before avformat_open_input(). *) probesize: cuint; (** - * decoding: maximum time (in AV_TIME_BASE units) during which the input should - * be analyzed in avformat_find_stream_info(). + * Maximum duration (in AV_TIME_BASE units) of the data read + * from input in avformat_find_stream_info(). + * Demuxing only, set by the caller before avformat_find_stream_info(). *) max_analyze_duration: cint; @@ -1243,8 +1399,8 @@ type * accurate seeking (depends on demuxer). * Demuxers for which a full in-memory index is mandatory will ignore * this. - * muxing : unused - * demuxing: set by user + * - muxing: unused + * - demuxing: set by user *) max_index_size: cuint; @@ -1257,35 +1413,43 @@ type nb_chapters: cuint; chapters: PAVChapterArray; + (** + * Metadata that applies to the whole file. + * + * - demuxing: set by libavformat in avformat_open_input() + * - muxing: may be set by the caller before avformat_write_header() + * + * Freed by libavformat in avformat_free_context(). + *) metadata: PAVDictionary; (** * 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. + * since the Unix epoch (00:00 1st January 1970). That is, pts=0 in the + * stream was captured at this real world time. + * Muxing only, set by the caller before avformat_write_header(). *) start_time_realtime: cint64; (** - * decoding: number of frames used to probe fps + * The number of frames used for determining the framerate in + * avformat_find_stream_info(). + * Demuxing only, set by the caller before avformat_find_stream_info(). *) fps_probe_size: cint; (** * 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. + * Demuxing only, set by the caller before avformat_open_input(). *) 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() + * demuxing: set by the user before avformat_open_input(). + * muxing: 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. @@ -1298,6 +1462,24 @@ type debug: cint; (** + * Maximum buffering duration for interleaving. + * + * To ensure all the streams are interleaved correctly, + * av_interleaved_write_frame() will wait until it has at least one packet + * for each stream before actually writing any packets to the output file. + * When some streams are "sparse" (i.e. there are large gaps between + * successive packets), this can result in excessive buffering. + * + * This field specifies the maximum difference between the timestamps of the + * first and the last packet in the muxing queue, above which libavformat + * will output a packet regardless of whether it has queued a packet for all + * the streams. + * + * Muxing only, set by the caller before avformat_write_header(). + *) + max_interleave_delta: cint64; + + (** * Transport stream id. * This will be moved into demuxer private options. Thus no API/ABI compatibility *) @@ -1439,6 +1621,12 @@ type offset_timebase: TAVRational; (** + * An opaque field for libavformat internal usage. + * Must not be accessed in any way by callers. + *) + internal: PAVFormatInternal; + + (** * IO repositioned flag. * This is set by avformat when the underlaying IO context read pointer * is repositioned, for example when doing byte based seeking. @@ -1446,7 +1634,98 @@ type *) io_repositioned: cint; -end; (** TAVFormatContext **) + (** + * Forced video codec. + * This allows forcing a specific decoder, even when there are multiple with + * the same codec_id. + * Demuxing: Set by user via av_format_set_video_codec (NO direct access). + *) + video_codec: PAVCodec; + + (** + * Forced audio codec. + * This allows forcing a specific decoder, even when there are multiple with + * the same codec_id. + * Demuxing: Set by user via av_format_set_audio_codec (NO direct access). + *) + audio_codec: PAVCodec; + + (** + * Forced subtitle codec. + * This allows forcing a specific decoder, even when there are multiple with + * the same codec_id. + * Demuxing: Set by user via av_format_set_subtitle_codec (NO direct access). + *) + subtitle_codec: PAVCodec; + + (** + * Number of bytes to be written as padding in a metadata header. + * Demuxing: Unused. + * Muxing: Set by user via av_format_set_metadata_header_padding. + *) + metadata_header_padding: cint; + + (** + * User data. + * This is a place for some private data of the user. + * Mostly usable with control_message_cb or any future callbacks in device's context. + *) + opaque: pointer; + + (** + * Callback used by devices to communicate with application. + *) + control_message_cb: TAv_format_control_message; + + (** + * Output timestamp offset, in microseconds. + * Muxing: set by user via AVOptions (NO direct access) + *) + output_ts_offset: cint64; + + end; (** TAVFormatContext **) + + function av_format_get_probe_score(s: {const} PAVFormatContext): cint; + cdecl; external av__format; + function av_format_get_video_codec(s: {const} PAVFormatContext): PAVCodec; + cdecl; external av__format; + procedure av_format_set_video_codec(s: PAVFormatContext; c: PAVCodec); + cdecl; external av__format; + function av_format_get_audio_codec(s: {const} PAVFormatContext): PAVCodec; + cdecl; external av__format; + procedure av_format_set_audio_codec(s: PAVFormatContext; c: PAVCodec); + cdecl; external av__format; + function av_format_get_subtitle_codec(s: {const} PAVFormatContext): PAVCodec; + cdecl; external av__format; + procedure av_format_set_subtitle_codec(s: PAVFormatContext; c: PAVCodec); + cdecl; external av__format; + function av_format_get_metadata_header_padding(s: {const} PAVFormatContext): cint; + cdecl; external av__format; + procedure av_format_set_metadata_header_padding(s: PAVFormatContext; c: cint); + cdecl; external av__format; + procedure av_format_get_opaque(s: {const} PAVFormatContext); + cdecl; external av__format; + procedure av_format_set_opaque(s: PAVFormatContext; opaque: pointer); + cdecl; external av__format; + function av_format_get_control_message_cb(s: {const} PAVFormatContext): TAv_format_control_message; + cdecl; external av__format; + procedure av_format_set_control_message_cb(s: PAVFormatContext; callback: TAv_format_control_message); + cdecl; external av__format; + + (** From libavdevice/avdevice.h **) + PPAVDeviceInfo = ^PAVDeviceInfo; + PAVDeviceInfo = ^TAVDeviceInfo; + TAVDeviceInfo = record + device_name: PAnsiChar; (**< device name, format depends on device *) + device_description: PAnsiChar; (**< human friendly name *) + end; {TAVDeviceInfo} + + PAVDeviceInfoList = ^TAVDeviceInfoList; + TAVDeviceInfoList = record + devices: PPAVDeviceInfo; (**< list of autodetected devices *) + nb_devices: cint; (**< number of autodetected devices *) + default_device: cint; (**< index of default device or -1 if no default *) + end; {TAVDeviceInfoList} function av_stream_get_r_frame_rate({const} s: PAVStream): TAVRational; cdecl; external av__format; @@ -1570,6 +1849,10 @@ function avformat_get_class(): {const} PAVClass; * * When muxing, should be called by the user before avformat_write_header(). * + * User is required to call avcodec_close() and avformat_free_context() to + * clean up the allocation by avformat_new_stream(). + * + * @param s media file handle * @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. @@ -1635,8 +1918,9 @@ function av_find_input_format(short_name: PAnsiChar): PAVInputFormat; cdecl; external av__format; (** - * Guess file format. + * Guess the file format. * + * @param pd data to be probed * @param is_opened Whether the file is already opened; determines whether * demuxers with or without AVFMT_NOFILE are probed. *) @@ -1646,6 +1930,7 @@ function av_probe_input_format(pd: PAVProbeData; is_opened: cint): PAVInputForma (** * Guess the file format. * + * @param pd data to be probed * @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 @@ -1844,6 +2129,8 @@ function av_read_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; (** * Seek to the keyframe at timestamp. * 'timestamp' in 'stream_index'. + * + * @param s media file handle * @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. @@ -1873,6 +2160,7 @@ function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint6 * keyframes (this may not be supported by all demuxers). * If flags contain AVSEEK_FLAG_BACKWARD, it is ignored. * + * @param s media file handle * @param stream_index index of the stream which is used as time base reference * @param min_ts smallest acceptable timestamp * @param ts target timestamp @@ -1976,35 +2264,117 @@ function avformat_write_header(s: PAVFormatContext; options: {PPAVDictionary} po cdecl; external av__format; (** + * Write a packet to an output media file. + * + * This function passes the packet directly to the muxer, without any buffering + * or reordering. The caller is responsible for correctly interleaving the + * packets if the format requires it. Callers that want libavformat to handle + * the interleaving should call av_interleaved_write_frame() instead of this + * function. + * + * @param s media file handle + * @param pkt The packet containing the data to be written. Note that unlike + * av_interleaved_write_frame(), this function does not take + * ownership of the packet passed to it (though some muxers may make + * an internal reference to the input packet). + * <br> + * This parameter can be NULL (at any time, not just at the end), in + * order to immediately flush data buffered within the muxer, for + * muxers that buffer up data internally before writing it to the + * output. + * <br> + * 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 error, = 0 if OK, 1 if flushed and there is no more data to flush + * + * @see av_interleaved_write_frame() + *) +function av_write_frame(s: PAVFormatContext; pkt: PAVPacket): 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. + * This function will buffer the packets internally as needed to make sure the + * packets in the output file are properly interleaved in the order of + * increasing dts. Callers doing their own interleaving should call + * av_write_frame() instead of this function. * * @param s media file handle - * @param pkt The packet containing the data to be written. pkt->buf must be set - * to a valid AVBufferRef describing the packet data. Libavformat takes - * ownership of this reference and will unref it when it sees fit. The caller - * must not access the data through this reference after this function returns. - * This can be NULL (at any time, not just at the end), to flush the - * interleaving queues. - * 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. + * @param pkt The packet containing the data to be written. + * <br> + * If the packet is reference-counted, this function will take + * ownership of this reference and unreference it later when it sees + * fit. + * The caller must not access the data through this reference after + * this function returns. If the packet is not reference-counted, + * libavformat will make a copy. + * <br> + * This parameter can be NULL (at any time, not just at the end), to + * flush the interleaving queues. + * <br> + * 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. Libavformat will always + * take care of freeing the packet, even if this function fails. + * + * @see av_write_frame(), AVFormatContext.max_interleave_delta *) function av_interleaved_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint; cdecl; external av__format; (** + * Write a uncoded frame to an output media file. + * + * The frame must be correctly interleaved according to the container + * specification; if not, then av_interleaved_write_frame() must be used. + * + * See av_interleaved_write_frame() for details. + *) +function av_write_uncoded_frame(s: PAVFormatContext; stream_index: cint; + frame: PAVFrame): cint; + cdecl; external av__format; + +(** + * Write a uncoded frame to an output media file. + * + * If the muxer supports it, this function allows to write an AVFrame + * structure directly, without encoding it into a packet. + * It is mostly useful for devices and similar special muxers that use raw + * video or PCM data and will not serialize it into a byte stream. + * + * To test whether it is possible to use it with a given muxer and stream, + * use av_write_uncoded_frame_query(). + * + * The caller gives up ownership of the frame and must not access it + * afterwards. + * + * @return >=0 for success, a negative code on error + *) +function av_interleaved_write_uncoded_frame(s: PAVFormatContext; stream_index: cint; + frame: PAVFrame): cint; + cdecl; external av__format; + + +(** + * Test whether a muxer supports uncoded frame. + * + * @return >=0 if an uncoded frame can be written to that muxer and stream, + * <0 if not + *) +function av_write_uncoded_frame_query(s: PAVFormatContext; stream_index: cint): cint; + cdecl; external av__format; + +(** * Write the stream trailer to an output media file and free the * file private data. * @@ -2134,6 +2504,7 @@ procedure av_pkt_dump_log2(avcl: pointer; level: cint; pkt: PAVPacket; dump_payl * * @param tags list of supported codec_id-codec_tag pairs, as stored * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + * @param tag codec tag to match to a codec ID *) function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TAVCodecID; cdecl; external av__format; @@ -2144,6 +2515,7 @@ function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TAVCodecID; * * @param tags list of supported codec_id-codec_tag pairs, as stored * in AVInputFormat.codec_tag and AVOutputFormat.codec_tag + * @param id codec ID to match to a codec tag *) function av_codec_get_tag(var tags: PAVCodecTag; id: TAVCodecID): cuint; cdecl; external av__format; @@ -2166,6 +2538,9 @@ function av_find_default_stream_index(s: PAVFormatContext): cint; (** * Get the index for a specific timestamp. + * + * @param st stream that the timestamp belongs to + * @param timestamp timestamp to retrieve the index for * @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 >= @@ -2267,6 +2642,7 @@ function av_sdp_create(ac: pointer; n_files: cint; buf: PAnsiChar; size: cint): * Return a positive value if the given filename has one of the given * extensions, 0 otherwise. * + * @param filename file name to check against the given extensions * @param extensions a comma-separated list of filename extensions *) function av_match_ext(filename: {const} Pchar; extensions: {const} Pchar): cint; @@ -2275,6 +2651,8 @@ function av_match_ext(filename: {const} Pchar; extensions: {const} Pchar): cint; (** * Test if the given container can store a codec. * + * @param ofmt container to check for compatibility + * @param codec_id codec to potentially store in container * @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. @@ -2307,6 +2685,15 @@ function avformat_get_riff_audio_tags(): {const} PAVCodecTag; cdecl; external av__format; (** + * @return the table mapping MOV FourCCs for video to libavcodec AVCodecID. + *) +function avformat_get_mov_video_tags(): {const} PAVCodecTag; +(** + * @return the table mapping MOV FourCCs for audio to AVCodecID. + *) +function avformat_get_mov_audio_tags(): {const} PAVCodecTag; + +(** * Guess the sample aspect ratio of a frame, based on both the stream and the * frame aspect ratio. * |