Go to:
Gentoo Home
Documentation
Forums
Lists
Bugs
Planet
Store
Wiki
Get Gentoo!
Gentoo's Bugzilla – Attachment 263571 Details for
Bug 354769
media-video/ffmpeg-0.6_p25767: /usr/include/libavformat/avformat.h:245: Error: »AVPacket« has not been declared
Home
|
New
–
[Ex]
|
Browse
|
Search
|
Privacy Policy
|
[?]
|
Reports
|
Requests
|
Help
|
New Account
|
Log In
[x]
|
Forgot Password
Login:
[x]
avformat.h
avformat.h (text/plain), 54.29 KB, created by
David
on 2011-02-22 22:28:03 UTC
(
hide
)
Description:
avformat.h
Filename:
MIME Type:
Creator:
David
Created:
2011-02-22 22:28:03 UTC
Size:
54.29 KB
patch
obsolete
>/* > * copyright (c) 2001 Fabrice Bellard > * > * This file is part of FFmpeg. > * > * FFmpeg is free software; you can redistribute it and/or > * modify it under the terms of the GNU Lesser General Public > * License as published by the Free Software Foundation; either > * version 2.1 of the License, or (at your option) any later version. > * > * FFmpeg is distributed in the hope that it will be useful, > * but WITHOUT ANY WARRANTY; without even the implied warranty of > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > * Lesser General Public License for more details. > * > * You should have received a copy of the GNU Lesser General Public > * License along with FFmpeg; if not, write to the Free Software > * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA > */ > >#ifndef AVFORMAT_AVFORMAT_H >#define AVFORMAT_AVFORMAT_H > >#define LIBAVFORMAT_VERSION_MAJOR 52 >#define LIBAVFORMAT_VERSION_MINOR 84 >#define LIBAVFORMAT_VERSION_MICRO 0 > >#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ > LIBAVFORMAT_VERSION_MINOR, \ > LIBAVFORMAT_VERSION_MICRO) >#define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \ > LIBAVFORMAT_VERSION_MINOR, \ > LIBAVFORMAT_VERSION_MICRO) >#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT > >#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION) > >/** > * Those FF_API_* defines are not part of public API. > * They may change, break or disappear at any time. > */ >#ifndef FF_API_MAX_STREAMS >#define FF_API_MAX_STREAMS (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_OLD_METADATA >#define FF_API_OLD_METADATA (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_URL_CLASS >#define FF_API_URL_CLASS (LIBAVFORMAT_VERSION_MAJOR >= 53) >#endif >#ifndef FF_API_URL_RESETBUF >#define FF_API_URL_RESETBUF (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_REGISTER_PROTOCOL >#define FF_API_REGISTER_PROTOCOL (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_GUESS_FORMAT >#define FF_API_GUESS_FORMAT (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_UDP_GET_FILE >#define FF_API_UDP_GET_FILE (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_URL_SPLIT >#define FF_API_URL_SPLIT (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_ALLOC_FORMAT_CONTEXT >#define FF_API_ALLOC_FORMAT_CONTEXT (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_PARSE_FRAME_PARAM >#define FF_API_PARSE_FRAME_PARAM (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_READ_SEEK >#define FF_API_READ_SEEK (LIBAVFORMAT_VERSION_MAJOR < 54) >#endif >#ifndef FF_API_LAVF_UNUSED >#define FF_API_LAVF_UNUSED (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_PARAMETERS_CODEC_ID >#define FF_API_PARAMETERS_CODEC_ID (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_FIRST_FORMAT >#define FF_API_FIRST_FORMAT (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif >#ifndef FF_API_SYMVER >#define FF_API_SYMVER (LIBAVFORMAT_VERSION_MAJOR < 53) >#endif > >/** > * I return the LIBAVFORMAT_VERSION_INT constant. You got > * a fucking problem with that, douchebag? > */ >unsigned avformat_version(void); > >/** > * Return the libavformat build-time configuration. > */ >const char *avformat_configuration(void); > >/** > * Return the libavformat license. > */ >const char *avformat_license(void); > >#include <time.h> >#include <stdio.h> /* FILE */ >#include "libavcodec/avcodec.h" > >#include "avio.h" > >struct AVFormatContext; > > >/* > * Public Metadata API. > * The metadata API allows libavformat to export metadata tags to a client > * application using a sequence of key/value pairs. Like all strings in FFmpeg, > * metadata must be stored as UTF-8 encoded Unicode. Note that metadata > * exported by demuxers isn't checked to be valid UTF-8 in most cases. > * Important concepts to keep in mind: > * 1. Keys are unique; there can never be 2 tags with the same key. This is > * also meant semantically, i.e., a demuxer should not knowingly produce > * several keys that are literally different but semantically identical. > * E.g., key=Author5, key=Author6. In this example, all authors must be > * placed in the same tag. > * 2. Metadata is flat, not hierarchical; there are no subtags. If you > * want to store, e.g., the email address of the child of producer Alice > * and actor Bob, that could have key=alice_and_bobs_childs_email_address. > * 3. 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 > * 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 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 > * 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. > * 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. > * 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. > * title -- name of the work. > * track -- number of this work in the set, can be in form current/total. > */ > >#define AV_METADATA_MATCH_CASE 1 >#define AV_METADATA_IGNORE_SUFFIX 2 >#define AV_METADATA_DONT_STRDUP_KEY 4 >#define AV_METADATA_DONT_STRDUP_VAL 8 >#define AV_METADATA_DONT_OVERWRITE 16 ///< Don't overwrite existing tags. > >typedef struct { > char *key; > char *value; >}AVMetadataTag; > >typedef struct AVMetadata AVMetadata; >#if FF_API_OLD_METADATA >typedef struct AVMetadataConv AVMetadataConv; >#endif > >/** > * Get a metadata element with matching key. > * > * @param prev Set to the previous matching element to find the next. > * If set to NULL the first matching element is returned. > * @param flags Allows case as well as suffix-insensitive comparisons. > * @return Found tag or NULL, changing key or value leads to undefined behavior. > */ >AVMetadataTag * >av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags); > >#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. > */ >attribute_deprecated int av_metadata_set(AVMetadata **pm, const char *key, const char *value); >#endif > >/** > * Set the given tag in *pm, overwriting an existing tag. > * > * @param pm pointer to a pointer to a metadata struct. If *pm is NULL > * a metadata struct is allocated and put in *pm. > * @param key tag key to add to *pm (will be av_strduped depending on flags) > * @param value tag value to add to *pm (will be av_strduped depending on flags). > * Passing a NULL value will cause an existing tag to be deleted. > * @return >= 0 on success otherwise an error code <0 > */ >int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags); > >#if FF_API_OLD_METADATA >/** > * This function is provided for compatibility reason and currently does nothing. > */ >attribute_deprecated void av_metadata_conv(struct AVFormatContext *ctx, const AVMetadataConv *d_conv, > const AVMetadataConv *s_conv); >#endif > >/** > * Free all the memory allocated for an AVMetadata struct. > */ >void av_metadata_free(AVMetadata **m); > > >/* packet functions */ > > >/** > * Allocate and read the payload of a packet and initialize its > * fields with default values. > * > * @param pkt packet > * @param size desired payload size > * @return >0 (read size) if OK, AVERROR_xxx otherwise > */ >int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size); > > >/*************************************************/ >/* fractional numbers for exact pts handling */ > >/** > * The exact value of the fractional number is: 'val + num / den'. > * num is assumed to be 0 <= num < den. > */ >typedef struct AVFrac { > int64_t val, num, den; >} AVFrac; > >/*************************************************/ >/* input/output formats */ > >struct AVCodecTag; > >/** > * This structure contains the data a format has to probe a file. > */ >typedef struct AVProbeData { > const char *filename; > unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero. */ > int buf_size; /**< Size of buf except extra allocated bytes */ >} AVProbeData; > >#define AVPROBE_SCORE_MAX 100 ///< maximum score, half of that is used for file-extension-based detection >#define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer > >typedef struct AVFormatParameters { > AVRational time_base; > int sample_rate; > int channels; > int width; > int height; > enum PixelFormat pix_fmt; > int channel; /**< Used to select DV channel. */ > const char *standard; /**< TV standard, NTSC, PAL, SECAM */ > unsigned int mpeg2ts_raw:1; /**< Force raw MPEG-2 transport stream output, if possible. */ > unsigned int mpeg2ts_compute_pcr:1; /**< Compute exact PCR for each transport > stream packet (only meaningful if > mpeg2ts_raw is TRUE). */ > unsigned int initial_pause:1; /**< Do not begin to play the stream > immediately (RTSP only). */ > unsigned int prealloced_context:1; >#if FF_API_PARAMETERS_CODEC_ID > attribute_deprecated enum CodecID video_codec_id; > attribute_deprecated enum CodecID audio_codec_id; >#endif >} AVFormatParameters; > >//! Demuxer will use url_fopen, no opened file should be provided by the caller. >#define AVFMT_NOFILE 0x0001 >#define AVFMT_NEEDNUMBER 0x0002 /**< Needs '%d' in filename. */ >#define AVFMT_SHOW_IDS 0x0008 /**< Show format stream IDs numbers. */ >#define AVFMT_RAWPICTURE 0x0020 /**< Format wants AVPicture structure for > raw picture data. */ >#define AVFMT_GLOBALHEADER 0x0040 /**< Format wants global header. */ >#define AVFMT_NOTIMESTAMPS 0x0080 /**< Format does not need / have any timestamps. */ >#define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */ >#define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. */ >#define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */ >#define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */ > >typedef struct AVOutputFormat { > const char *name; > /** > * Descriptive name for the format, meant to be more human-readable > * than name. You should use the NULL_IF_CONFIG_SMALL() macro > * to define it. > */ > const char *long_name; > const char *mime_type; > const char *extensions; /**< comma-separated filename extensions */ > /** > * size of private data so that it can be allocated in the wrapper > */ > int priv_data_size; > /* output support */ > enum CodecID audio_codec; /**< default audio codec */ > enum CodecID video_codec; /**< default video codec */ > int (*write_header)(struct AVFormatContext *); > int (*write_packet)(struct AVFormatContext *, AVPacket *pkt); > int (*write_trailer)(struct AVFormatContext *); > /** > * can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER > */ > int flags; > /** > * Currently only used to set pixel format if not YUV420P. > */ > int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *); > int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, > AVPacket *in, int flush); > > /** > * List of supported codec_id-codec_tag pairs, ordered by "better > * choice first". The arrays are all terminated by CODEC_ID_NONE. > */ > const struct AVCodecTag * const *codec_tag; > > enum CodecID subtitle_codec; /**< default subtitle codec */ > >#if FF_API_OLD_METADATA > const AVMetadataConv *metadata_conv; >#endif > > /* private fields */ > struct AVOutputFormat *next; >} AVOutputFormat; > >typedef struct AVInputFormat { > /** > * A comma separated list of short names for the format. New names > * may be appended with a minor bump. > */ > const char *name; > > /** > * Descriptive name for the format, meant to be more human-readable > * than name. You should use the NULL_IF_CONFIG_SMALL() macro > * to define it. > */ > const char *long_name; > > /** > * Size of private data so that it can be allocated in the wrapper. > */ > int priv_data_size; > > /** > * Tell if a given file has a chance of being parsed as this format. > * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes > * big so you do not have to check for that unless you need more. > */ > int (*read_probe)(AVProbeData *); > > /** > * Read the format header and initialize the AVFormatContext > * structure. Return 0 if OK. 'ap' if non-NULL contains > * additional parameters. Only used in raw format right > * now. 'av_new_stream' should be called to create new streams. > */ > int (*read_header)(struct AVFormatContext *, > AVFormatParameters *ap); > > /** > * Read one packet and put it in 'pkt'. pts and flags are also > * set. 'av_new_stream' can be called only if the flag > * AVFMTCTX_NOHEADER is used and only in the calling thread (not in a > * background thread). > * @return 0 on success, < 0 on error. > * When returning an error, pkt must not have been allocated > * or must be freed before returning > */ > int (*read_packet)(struct AVFormatContext *, AVPacket *pkt); > > /** > * Close the stream. The AVFormatContext and AVStreams are not > * freed by this function > */ > int (*read_close)(struct AVFormatContext *); > >#if FF_API_READ_SEEK > /** > * Seek to a given timestamp relative to the frames in > * stream component stream_index. > * @param stream_index Must not be -1. > * @param flags Selects which direction should be preferred if no exact > * match is available. > * @return >= 0 on success (but not necessarily the new offset) > */ > attribute_deprecated int (*read_seek)(struct AVFormatContext *, > int stream_index, int64_t timestamp, int flags); >#endif > /** > * Gets the next timestamp in stream[stream_index].time_base units. > * @return the timestamp or AV_NOPTS_VALUE if an error occurred > */ > int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index, > int64_t *pos, int64_t pos_limit); > > /** > * Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. > */ > int flags; > > /** > * If extensions are defined, then no probe is done. You should > * usually not use extension format guessing because it is not > * reliable enough > */ > const char *extensions; > > /** > * General purpose read-only value that the format can use. > */ > int value; > > /** > * Start/resume playing - only meaningful if using a network-based format > * (RTSP). > */ > int (*read_play)(struct AVFormatContext *); > > /** > * Pause playing - only meaningful if using a network-based format > * (RTSP). > */ > int (*read_pause)(struct AVFormatContext *); > > const struct AVCodecTag * const *codec_tag; > > /** > * 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. > */ > int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); > >#if FF_API_OLD_METADATA > const AVMetadataConv *metadata_conv; >#endif > > /* private fields */ > struct AVInputFormat *next; >} AVInputFormat; > >enum AVStreamParseType { > AVSTREAM_PARSE_NONE, > AVSTREAM_PARSE_FULL, /**< full parsing and repack */ > AVSTREAM_PARSE_HEADERS, /**< Only parse headers, do not repack. */ > AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */ > AVSTREAM_PARSE_FULL_ONCE, /**< full parsing and repack of the first frame only, only implemented for H.264 currently */ >}; > >typedef struct AVIndexEntry { > int64_t pos; > int64_t timestamp; >#define AVINDEX_KEYFRAME 0x0001 > 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). > int min_distance; /**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. */ >} AVIndexEntry; > >#define AV_DISPOSITION_DEFAULT 0x0001 >#define AV_DISPOSITION_DUB 0x0002 >#define AV_DISPOSITION_ORIGINAL 0x0004 >#define AV_DISPOSITION_COMMENT 0x0008 >#define AV_DISPOSITION_LYRICS 0x0010 >#define AV_DISPOSITION_KARAOKE 0x0020 > >/** > * Track should be used during playback by default. > * Useful for subtitle track that should be displayed > * even when user did not explicitly ask for subtitles. > */ >#define AV_DISPOSITION_FORCED 0x0040 > >/** > * Stream structure. > * New fields can be added to the end with minor version bumps. > * Removal, reordering and changes to existing fields require a major > * version bump. > * sizeof(AVStream) must not be used outside libav*. > */ >typedef struct AVStream { > int index; /**< stream index in AVFormatContext */ > int id; /**< format-specific stream ID */ > AVCodecContext *codec; /**< codec context */ > /** > * Real base framerate of the stream. > * This is the lowest framerate with which all timestamps can be > * represented accurately (it is the least common multiple of all > * framerates in the stream). Note, this value is just a guess! > * For example, if the time base is 1/90000 and all frames have either > * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1. > */ > AVRational r_frame_rate; > void *priv_data; > > /* internal data used in av_find_stream_info() */ > int64_t first_dts; > > /** > * encoding: pts generation when outputting stream > */ > struct AVFrac pts; > > /** > * 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. > */ > AVRational time_base; > int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */ > /* ffmpeg.c private use */ > int stream_copy; /**< If set, just copy stream. */ > enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed. > > //FIXME move stuff to a flags field? > /** > * Quality, as it has been removed from AVCodecContext and put in AVVideoFrame. > * MN: dunno if that is the right place for it > */ > float quality; > > /** > * Decoding: pts of the first frame of the stream, in stream time base. > * Only set this if you are absolutely 100% sure that the value you set > * it to really is the pts of the first frame. > * This may be undefined (AV_NOPTS_VALUE). > * @note The ASF header does NOT contain a correct start_time the ASF > * demuxer must NOT set this. > */ > int64_t start_time; > > /** > * Decoding: duration of the stream, in stream time base. > * If a source file does not specify a duration, but does specify > * a bitrate, this value will be estimated from bitrate and file size. > */ > int64_t duration; > >#if FF_API_OLD_METADATA > attribute_deprecated char language[4]; /**< ISO 639-2/B 3-letter language code (empty string if undefined) */ >#endif > > /* av_read_frame() support */ > enum AVStreamParseType need_parsing; > struct AVCodecParserContext *parser; > > int64_t cur_dts; > int last_IP_duration; > int64_t last_IP_pts; > /* av_seek_frame() support */ > AVIndexEntry *index_entries; /**< Only used if the format does not > support seeking natively. */ > int nb_index_entries; > unsigned int index_entries_allocated_size; > > int64_t nb_frames; ///< number of frames in this stream if known or 0 > >#if FF_API_LAVF_UNUSED > attribute_deprecated int64_t unused[4+1]; >#endif > >#if FF_API_OLD_METADATA > attribute_deprecated char *filename; /**< source filename of the stream */ >#endif > > int disposition; /**< AV_DISPOSITION_* bit field */ > > AVProbeData probe_data; >#define MAX_REORDER_DELAY 16 > int64_t pts_buffer[MAX_REORDER_DELAY+1]; > > /** > * sample aspect ratio (0 if unknown) > * - encoding: Set by user. > * - decoding: Set by libavformat. > */ > AVRational sample_aspect_ratio; > > AVMetadata *metadata; > > /* Intended mostly for av_read_frame() support. Not supposed to be used by */ > /* external applications; try to use something else if at all possible. */ > const uint8_t *cur_ptr; > int cur_len; > AVPacket cur_pkt; > > // 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. > */ > int64_t reference_dts; > > /** > * Number of packets to buffer for codec probing > * NOT PART OF PUBLIC API > */ >#define MAX_PROBE_PACKETS 2500 > int probe_packets; > > /** > * 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* > */ > struct AVPacketList *last_in_packet_buffer; > > /** > * Average framerate > */ > AVRational avg_frame_rate; > > /** > * Number of frames that have been demuxed during av_find_stream_info() > */ > int codec_info_nb_frames; > > /** > * Stream informations used internally by av_find_stream_info() > */ >#define MAX_STD_TIMEBASES (60*12+5) > struct { > int64_t last_dts; > int64_t duration_gcd; > int duration_count; > double duration_error[MAX_STD_TIMEBASES]; > int64_t codec_info_duration; > } *info; >} AVStream; > >#define AV_PROGRAM_RUNNING 1 > >/** > * 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*. > */ >typedef struct AVProgram { > int id; >#if FF_API_OLD_METADATA > attribute_deprecated char *provider_name; ///< network name for DVB streams > attribute_deprecated char *name; ///< service name for DVB streams >#endif > int flags; > enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller > unsigned int *stream_index; > unsigned int nb_stream_indexes; > AVMetadata *metadata; >} AVProgram; > >#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present > (streams are added dynamically) */ > >typedef struct AVChapter { > int id; ///< unique ID to identify the chapter > AVRational time_base; ///< time base in which the start/end timestamps are specified > int64_t start, end; ///< chapter start/end time in time_base units >#if FF_API_OLD_METADATA > attribute_deprecated char *title; ///< chapter title >#endif > AVMetadata *metadata; >} AVChapter; > >#if FF_API_MAX_STREAMS >#define MAX_STREAMS 20 >#endif > >/** > * 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*. > */ >typedef struct AVFormatContext { > const AVClass *av_class; /**< Set by avformat_alloc_context. */ > /* Can only be iformat or oformat, not both at the same time. */ > struct AVInputFormat *iformat; > struct AVOutputFormat *oformat; > void *priv_data; > ByteIOContext *pb; > unsigned int nb_streams; >#if FF_API_MAX_STREAMS > AVStream *streams[MAX_STREAMS]; >#else > AVStream **streams; >#endif > char filename[1024]; /**< input or output filename */ > /* stream info */ > int64_t timestamp; >#if FF_API_OLD_METADATA > attribute_deprecated char title[512]; > attribute_deprecated char author[512]; > attribute_deprecated char copyright[512]; > attribute_deprecated char comment[512]; > attribute_deprecated char album[512]; > attribute_deprecated int year; /**< ID3 year, 0 if none */ > attribute_deprecated int track; /**< track number, 0 if none */ > attribute_deprecated char genre[32]; /**< ID3 genre */ >#endif > > int ctx_flags; /**< Format-specific flags, see AVFMTCTX_xx */ > /* private data for pts handling (do not modify directly). */ > /** > * This buffer is only needed when packets were already buffered but > * not decoded, for example to get the codec parameters in MPEG > * streams. > */ > struct AVPacketList *packet_buffer; > > /** > * Decoding: position of the first frame of the component, in > * AV_TIME_BASE fractional seconds. NEVER set this value directly: > * It is deduced from the AVStream values. > */ > int64_t start_time; > > /** > * Decoding: duration of the stream, in AV_TIME_BASE fractional > * seconds. Only set this value if you know none of the individual stream > * durations and also dont set any of them. This is deduced from the > * AVStream values if not set. > */ > int64_t duration; > > /** > * decoding: total file size, 0 if unknown > */ > int64_t file_size; > > /** > * Decoding: total stream bitrate in bit/s, 0 if not > * available. Never set it directly if the file_size and the > * duration are known as FFmpeg can compute it automatically. > */ > int bit_rate; > > /* av_read_frame() support */ > AVStream *cur_st; >#if FF_API_LAVF_UNUSED > const uint8_t *cur_ptr_deprecated; > int cur_len_deprecated; > AVPacket cur_pkt_deprecated; >#endif > > /* av_seek_frame() support */ > int64_t data_offset; /**< offset of the first packet */ > int index_built; > > int mux_rate; > unsigned int packet_size; > int preload; > int max_delay; > >#define AVFMT_NOOUTPUTLOOP -1 >#define AVFMT_INFINITEOUTPUTLOOP 0 > /** > * number of times to loop output in formats that support it > */ > int loop_output; > > int flags; >#define AVFMT_FLAG_GENPTS 0x0001 ///< Generate missing pts even if it requires parsing future frames. >#define AVFMT_FLAG_IGNIDX 0x0002 ///< Ignore index. >#define AVFMT_FLAG_NONBLOCK 0x0004 ///< Do not block when reading packets from input. >#define AVFMT_FLAG_IGNDTS 0x0008 ///< Ignore DTS on frames that contain both DTS & PTS >#define AVFMT_FLAG_NOFILLIN 0x0010 ///< Do not infer any values from other values, just return what is stored in the container >#define AVFMT_FLAG_NOPARSE 0x0020 ///< 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 >#define AVFMT_FLAG_RTP_HINT 0x0040 ///< Add RTP hinting to the output file > > int loop_input; > > /** > * decoding: size of data to probe; encoding: unused. > */ > unsigned int probesize; > > /** > * Maximum time (in AV_TIME_BASE units) during which the input should > * be analyzed in av_find_stream_info(). > */ > int max_analyze_duration; > > const uint8_t *key; > int keylen; > > unsigned int nb_programs; > AVProgram **programs; > > /** > * Forced video codec_id. > * Demuxing: Set by user. > */ > enum CodecID video_codec_id; > > /** > * Forced audio codec_id. > * Demuxing: Set by user. > */ > enum CodecID audio_codec_id; > > /** > * Forced subtitle codec_id. > * Demuxing: Set by user. > */ > enum CodecID subtitle_codec_id; > > /** > * Maximum amount of memory in bytes to use for the index of each stream. > * If the index exceeds this size, entries will be discarded as > * needed to maintain a smaller size. This can lead to slower or less > * accurate seeking (depends on demuxer). > * Demuxers for which a full in-memory index is mandatory will ignore > * this. > * muxing : unused > * demuxing: set by user > */ > unsigned int max_index_size; > > /** > * Maximum amount of memory in bytes to use for buffering frames > * obtained from realtime capture devices. > */ > unsigned int max_picture_buffer; > > unsigned int nb_chapters; > AVChapter **chapters; > > /** > * Flags to enable debugging. > */ > int debug; >#define FF_FDEBUG_TS 0x0001 > > /** > * 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. > */ > struct AVPacketList *raw_packet_buffer; > struct AVPacketList *raw_packet_buffer_end; > > struct AVPacketList *packet_buffer_end; > > AVMetadata *metadata; > > /** > * Remaining size available for raw_packet_buffer, in bytes. > * NOT PART OF PUBLIC API > */ >#define RAW_PACKET_BUFFER_SIZE 2500000 > int raw_packet_buffer_remaining_size; > > /** > * 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. > */ > int64_t start_time_realtime; >} AVFormatContext; > >typedef struct AVPacketList { > AVPacket pkt; > struct AVPacketList *next; >} AVPacketList; > >#if FF_API_FIRST_FORMAT >attribute_deprecated extern AVInputFormat *first_iformat; >attribute_deprecated extern AVOutputFormat *first_oformat; >#endif > >/** > * 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. > */ >AVInputFormat *av_iformat_next(AVInputFormat *f); > >/** > * If f is NULL, returns the first registered output format, > * if f is non-NULL, returns the next registered output format after f > * or NULL if f is the last one. > */ >AVOutputFormat *av_oformat_next(AVOutputFormat *f); > >enum CodecID av_guess_image2_codec(const char *filename); > >/* XXX: Use automatic init with either ELF sections or C file parser */ >/* modules. */ > >/* utils.c */ >void av_register_input_format(AVInputFormat *format); >void av_register_output_format(AVOutputFormat *format); >#if FF_API_GUESS_FORMAT >attribute_deprecated AVOutputFormat *guess_stream_format(const char *short_name, > const char *filename, > const char *mime_type); > >/** > * @deprecated Use av_guess_format() instead. > */ >attribute_deprecated AVOutputFormat *guess_format(const char *short_name, > const char *filename, > const char *mime_type); >#endif > >/** > * 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 > */ >AVOutputFormat *av_guess_format(const char *short_name, > const char *filename, > const char *mime_type); > >/** > * Guess the codec ID based upon muxer and filename. > */ >enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name, > const char *filename, const char *mime_type, > enum AVMediaType type); > >/** > * 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 > */ >void av_hex_dump(FILE *f, uint8_t *buf, int size); > >/** > * 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 > */ >void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size); > >/** > * 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. > */ >void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload); > >/** > * 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. > */ >void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload); > >/** > * 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() > */ >void av_register_all(void); > >/** > * 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 > */ >enum CodecID av_codec_get_id(const struct AVCodecTag * const *tags, unsigned int tag); > >/** > * Get the 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 > */ >unsigned int av_codec_get_tag(const struct AVCodecTag * const *tags, enum CodecID id); > >/* media file input */ > >/** > * Find AVInputFormat based on the short name of the input format. > */ >AVInputFormat *av_find_input_format(const char *short_name); > >/** > * Guess the file format. > * > * @param is_opened Whether the file is already opened; determines whether > * demuxers with or without AVFMT_NOFILE are probed. > */ >AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened); > >/** > * Guess the file format. > * > * @param is_opened Whether the file is already opened; determines whether > * demuxers with or without AVFMT_NOFILE are probed. > * @param score_max A probe score larger that this is required to accept a > * detection, the variable is set to the actual detection > * score afterwards. > * If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended > * to retry with a larger probe buffer. > */ >AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max); > >/** > * Allocate all the structures needed to read an input stream. > * This does not open the needed codecs for decoding the stream[s]. > */ >int av_open_input_stream(AVFormatContext **ic_ptr, > ByteIOContext *pb, const char *filename, > AVInputFormat *fmt, AVFormatParameters *ap); > >/** > * Open a media file as input. The codecs are not opened. Only the file > * header (if present) is read. > * > * @param ic_ptr The opened media file handle is put here. > * @param filename filename to open > * @param fmt If non-NULL, force the file format to use. > * @param buf_size optional buffer size (zero if default is OK) > * @param ap Additional parameters needed when opening the file > * (NULL if default). > * @return 0 if OK, AVERROR_xxx otherwise > */ >int av_open_input_file(AVFormatContext **ic_ptr, const char *filename, > AVInputFormat *fmt, > int buf_size, > AVFormatParameters *ap); > >#if FF_API_ALLOC_FORMAT_CONTEXT >/** > * @deprecated Use avformat_alloc_context() instead. > */ >attribute_deprecated AVFormatContext *av_alloc_format_context(void); >#endif > >/** > * Allocate an AVFormatContext. > * Can be freed with av_free() but do not forget to free everything you > * explicitly allocated as well! > */ >AVFormatContext *avformat_alloc_context(void); > >/** > * 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. > */ >int av_find_stream_info(AVFormatContext *ic); > >/** > * Read a transport packet from a media file. > * > * This function is obsolete and should never be used. > * Use av_read_frame() instead. > * > * @param s media file handle > * @param pkt is filled > * @return 0 if OK, AVERROR_xxx on error > */ >int av_read_packet(AVFormatContext *s, AVPacket *pkt); > >/** > * 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 integer number of > * frames if each frame has a known fixed size (e.g. PCM or ADPCM > * data). If the audio frames have a variable size (e.g. MPEG audio), > * then it contains one frame. > * > * pkt->pts, pkt->dts and pkt->duration are always set to correct > * values in AVStream.time_base units (and guessed if the format cannot > * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format > * has B-frames, so it is better to rely on pkt->dts if you do not > * decompress the payload. > * > * @return 0 if OK, < 0 on error or end of file > */ >int av_read_frame(AVFormatContext *s, AVPacket *pkt); > >/** > * Seek to the keyframe at timestamp. > * 'timestamp' in 'stream_index'. > * @param stream_index If stream_index is (-1), a default > * stream is selected, and timestamp is automatically converted > * from AV_TIME_BASE units to the stream specific time_base. > * @param timestamp Timestamp in AVStream.time_base units > * or, if no stream is specified, in AV_TIME_BASE units. > * @param flags flags which select direction and seeking mode > * @return >= 0 on success > */ >int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, > int flags); > >/** > * 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 bytes 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! > */ >int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags); > >/** > * Start playing a network-based stream (e.g. RTSP stream) at the > * current position. > */ >int av_read_play(AVFormatContext *s); > >/** > * Pause a network-based stream (e.g. RTSP stream). > * > * Use av_read_play() to resume it. > */ >int av_read_pause(AVFormatContext *s); > >/** > * Free a AVFormatContext allocated by av_open_input_stream. > * @param s context to free > */ >void av_close_input_stream(AVFormatContext *s); > >/** > * Close a media file (but not its codecs). > * > * @param s media file handle > */ >void av_close_input_file(AVFormatContext *s); > >/** > * Add a new stream to a media file. > * > * Can only be called in the read_header() function. If the flag > * AVFMTCTX_NOHEADER is in the format context, then new streams > * can be added in read_packet too. > * > * @param s media file handle > * @param id file-format-dependent stream ID > */ >AVStream *av_new_stream(AVFormatContext *s, int id); >AVProgram *av_new_program(AVFormatContext *s, int id); > >/** > * 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 > */ >AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, > int64_t start, int64_t end, const char *title); > >/** > * 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) > */ >void av_set_pts_info(AVStream *s, int pts_wrap_bits, > unsigned int pts_num, unsigned int pts_den); > >#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward >#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes >#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non-keyframes >#define AVSEEK_FLAG_FRAME 8 ///< seeking based on frame number > >int av_find_default_stream_index(AVFormatContext *s); > >/** > * 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 > */ >int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags); > >/** > * 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. > */ >void ff_reduce_index(AVFormatContext *s, int stream_index); > >/** > * Add an index entry into a sorted list. Update the entry if the list > * already contains it. > * > * @param timestamp timestamp in the time base of the given stream > */ >int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, > int size, int distance, int flags); > >/** > * 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 > */ >int av_seek_frame_binary(AVFormatContext *s, int stream_index, > int64_t target_ts, int flags); > >/** > * 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 > */ >void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp); > >/** > * 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 > */ >int64_t av_gen_search(AVFormatContext *s, int stream_index, > int64_t target_ts, int64_t pos_min, > int64_t pos_max, int64_t pos_limit, > int64_t ts_min, int64_t ts_max, > int flags, int64_t *ts_ret, > int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )); > >/** > * media file output > */ >int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap); > >/** > * 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 > */ >void av_url_split(char *proto, int proto_size, > char *authorization, int authorization_size, > char *hostname, int hostname_size, > int *port_ptr, > char *path, int path_size, > const char *url); > >/** > * Allocate the stream private data and write the stream header to an > * output media file. > * > * @param s media file handle > * @return 0 if OK, AVERROR_xxx on error > */ >int av_write_header(AVFormatContext *s); > >/** > * Write a packet to an output media file. > * > * The packet shall contain one audio or video frame. > * The packet must be correctly interleaved according to the container > * specification, if not then av_interleaved_write_frame must be used. > * > * @param s media file handle > * @param pkt The packet, which contains the stream_index, buf/buf_size, > dts/pts, ... > * @return < 0 on error, = 0 if OK, 1 if end of stream wanted > */ >int av_write_frame(AVFormatContext *s, AVPacket *pkt); > >/** > * Write a packet to an output media file ensuring correct interleaving. > * > * The packet must contain one audio or video frame. > * If the packets are already correctly interleaved, the application should > * call av_write_frame() instead as it is slightly faster. It is also important > * to keep in mind that completely non-interleaved input will need huge amounts > * of memory to interleave with this, so it is preferable to interleave at the > * demuxer level. > * > * @param s media file handle > * @param pkt The packet, which contains the stream_index, buf/buf_size, > dts/pts, ... > * @return < 0 on error, = 0 if OK, 1 if end of stream wanted > */ >int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt); > >/** > * Interleave a packet per dts in an output media file. > * > * Packets with pkt->destruct == av_destruct_packet will be freed inside this > * function, so they cannot be used after it. Note that calling av_free_packet() > * on them is still safe. > * > * @param s media file handle > * @param out the interleaved packet will be output here > * @param pkt the input packet > * @param flush 1 if no further packets are available as input and all > * remaining packets should be output > * @return 1 if a packet was output, 0 if no packet could be output, > * < 0 if an error occurred > */ >int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, > AVPacket *pkt, int flush); > >/** > * Write the stream trailer to an output media file and free the > * file private data. > * > * May only be called after a successful call to av_write_header. > * > * @param s media file handle > * @return 0 if OK, AVERROR_xxx on error > */ >int av_write_trailer(AVFormatContext *s); > >void dump_format(AVFormatContext *ic, > int index, > const char *url, > int is_output); > >#if FF_API_PARSE_FRAME_PARAM >/** > * Parse width and height out of string str. > * @deprecated Use av_parse_video_frame_size instead. > */ >attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr, > const char *str); > >/** > * Convert framerate from a string to a fraction. > * @deprecated Use av_parse_video_frame_rate instead. > */ >attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, > const char *arg); >#endif > >/** > * 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 local time 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. > * @return 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. > */ >int64_t parse_date(const char *datestr, int duration); > >/** > * Get the current time in microseconds. > */ >int64_t av_gettime(void); > >/* ffm-specific for ffserver */ >#define FFM_PACKET_SIZE 4096 >int64_t ffm_read_write_index(int fd); >int ffm_write_write_index(int fd, int64_t pos); >void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size); > >/** > * Attempt to find a specific tag in a URL. > * > * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done. > * Return 1 if found. > */ >int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info); > >/** > * Return in 'buf' the path with '%d' replaced by a number. > * > * Also handles the '%0nd' format where 'n' is the total number > * of digits and '%%'. > * > * @param buf destination buffer > * @param buf_size destination buffer size > * @param path numbered sequence string > * @param number frame number > * @return 0 if OK, -1 on format error > */ >int av_get_frame_filename(char *buf, int buf_size, > const char *path, int number); > >/** > * Check whether filename actually is a numbered sequence generator. > * > * @param filename possible numbered sequence string > * @return 1 if a valid numbered sequence string, 0 otherwise > */ >int av_filename_number_test(const char *filename); > >/** > * Generate an SDP for an RTP session. > * > * @param ac array of AVFormatContexts describing the RTP streams. If the > * array is composed by only one context, such context can contain > * multiple AVStreams (one AVStream per RTP stream). Otherwise, > * all the contexts in the array (an AVCodecContext per RTP stream) > * must contain only one AVStream. > * @param n_files number of AVCodecContexts contained in ac > * @param buff buffer where the SDP will be stored (must be allocated by > * the caller) > * @param size the size of the buffer > * @return 0 if OK, AVERROR_xxx on error > */ >int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size); > >/** > * Return a positive value if the given filename has one of the given > * extensions, 0 otherwise. > * > * @param extensions a comma-separated list of filename extensions > */ >int av_match_ext(const char *filename, const char *extensions); > >#endif /* AVFORMAT_AVFORMAT_H */
You cannot view the attachment while viewing its details because your browser does not support IFRAMEs.
View the attachment on a separate page
.
View Attachment As Raw
Actions:
View
Attachments on
bug 354769
:
262373
|
262771
|
262773
| 263571 |
263573