#ifndef AVFORMAT_AVFORMAT_H
#define AVFORMAT_AVFORMAT_H
-#define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 77
-#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)
/**
* I return the LIBAVFORMAT_VERSION_INT constant. You got
#include "libavcodec/avcodec.h"
#include "avio.h"
+#include "libavformat/version.h"
struct AVFormatContext;
* sorting will have '-sort' appended. E.g. artist="The Beatles",
* artist-sort="Beatles, The".
*
- * 4. Tag names are normally exported exactly as stored in the container to
- * allow lossless remuxing to the same format. For container-independent
- * handling of metadata, av_metadata_conv() can convert it to ffmpeg generic
- * format. Follows a list of generic tag names:
+ * 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.
* 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.
* 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.
*/
}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.
AVMetadataTag *
av_metadata_get(AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags);
-#if LIBAVFORMAT_VERSION_MAJOR == 52
+#if FF_API_OLD_METADATA
/**
- * Set the given tag in m, overwriting an existing tag.
- * @param key tag key to add to m (will be av_strduped)
- * @param value tag value to add to m (will be av_strduped)
+ * 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.
*/
#endif
/**
- * Set the given tag in m, overwriting an existing tag.
- * @param key tag key to add to m (will be av_strduped depending on flags)
- * @param value tag value to add to m (will be av_strduped depending on flags).
+ * 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
/**
- * 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.
*/
-void av_metadata_conv(struct AVFormatContext *ctx,const AVMetadataConv *d_conv,
- const AVMetadataConv *s_conv);
+attribute_deprecated void av_metadata_conv(struct AVFormatContext *ctx, const AVMetadataConv *d_conv,
+ const AVMetadataConv *s_conv);
+#endif
+
+/**
+ * Copy metadata from one AVMetadata struct into another.
+ * @param dst pointer to a pointer to a AVMetadata struct. If *dst is NULL,
+ * this function will allocate a struct for you and put it in *dst
+ * @param src pointer to source AVMetadata struct
+ * @param flags flags to use when setting metadata in *dst
+ * @note metadata is read using the AV_METADATA_IGNORE_SUFFIX flag
+ */
+void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags);
/**
* Free all the memory allocated for an AVMetadata struct.
int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
+/**
+ * Read data and append it to the current content of the AVPacket.
+ * If pkt->size is 0 this is identical to av_get_packet.
+ * Note that this uses av_grow_packet and thus involves a realloc
+ * which is inefficient. Thus this function should only be used
+ * when there is no reasonable way to know (an upper bound of)
+ * the final size.
+ *
+ * @param pkt packet
+ * @param size amount of data to read
+ * @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data
+ * will not be lost even if an error occurs.
+ */
+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size);
+
/*************************************************/
/* fractional numbers for exact pts handling */
struct AVCodecTag;
-/** This structure contains the data a format has to probe a file. */
+/**
+ * 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. */
unsigned int initial_pause:1; /**< Do not begin to play the stream
immediately (RTSP only). */
unsigned int prealloced_context:1;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
- enum CodecID video_codec_id;
- enum CodecID audio_codec_id;
+#if FF_API_PARAMETERS_CODEC_ID
+ attribute_deprecated enum CodecID video_codec_id;
+ attribute_deprecated enum CodecID audio_codec_id;
#endif
} AVFormatParameters;
#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_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. Note, muxers always require valid (monotone) timestamps */
#define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */
#define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */
+#define AVFMT_NOSTREAMS 0x1000 /**< Format does not require any streams */
typedef struct AVOutputFormat {
const char *name;
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 */
+ /**
+ * 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 */
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 */
+ /**
+ * can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER
+ */
int flags;
- /** Currently only used to set pixel format if not YUV420P. */
+ /**
+ * 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);
enum CodecID subtitle_codec; /**< default subtitle codec */
+#if FF_API_OLD_METADATA
const AVMetadataConv *metadata_conv;
+#endif
+
+ const AVClass *priv_class; ///< AVClass for the private context
/* private fields */
struct AVOutputFormat *next;
} AVOutputFormat;
typedef struct AVInputFormat {
- /** A comma separated list of short names for the format. New names
+ /**
+ * 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. */
+
+ /**
+ * 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. */
+
+ /**
+ * 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.
- @return 0 on success, < 0 on error.
- When returning an error, pkt must not have been allocated
- or must be freed before returning */
+
+ /**
+ * 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 */
+
+ /**
+ * Close the stream. The AVFormatContext and AVStreams are not
+ * freed by this function
+ */
int (*read_close)(struct AVFormatContext *);
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_READ_SEEK
/**
* Seek to a given timestamp relative to the frames in
* stream component stream_index.
* match is available.
* @return >= 0 on success (but not necessarily the new offset)
*/
- int (*read_seek)(struct AVFormatContext *,
- int stream_index, int64_t timestamp, int flags);
+ 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.
*/
int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
int64_t *pos, int64_t pos_limit);
- /** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. */
+
+ /**
+ * 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 */
+
+ /**
+ * 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. */
+
+ /**
+ * General purpose read-only value that the format can use.
+ */
int value;
- /** Start/resume playing - only meaningful if using a network-based format
- (RTSP). */
+ /**
+ * 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). */
+ /**
+ * Pause playing - only meaningful if using a network-based format
+ * (RTSP).
+ */
int (*read_pause)(struct AVFormatContext *);
const struct AVCodecTag * const *codec_tag;
*/
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;
#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. */
+
+/**
+ * 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
/**
/* internal data used in av_find_stream_info() */
int64_t first_dts;
- /** encoding: pts generation when outputting stream */
+
+ /**
+ * encoding: pts generation when outputting stream
+ */
struct AVFrac pts;
/**
/* 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 */
+ /**
+ * 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
* 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
*/
int64_t duration;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
- char language[4]; /** ISO 639-2/B 3-letter language code (empty string if undefined) */
+#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 */
int64_t nb_frames; ///< number of frames in this stream if known or 0
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
- int64_t unused[4+1];
+#if FF_API_LAVF_UNUSED
+ attribute_deprecated int64_t unused[4+1];
+#endif
- char *filename; /**< source filename of the stream */
+#if FF_API_OLD_METADATA
+ attribute_deprecated char *filename; /**< source filename of the stream */
#endif
int disposition; /**< AV_DISPOSITION_* bit field */
* 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
*/
typedef struct AVProgram {
int id;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
- char *provider_name; ///< network name for DVB streams
- char *name; ///< service name for DVB streams
+#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
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 LIBAVFORMAT_VERSION_INT < (53<<16)
- char *title; ///< chapter title
+#if FF_API_OLD_METADATA
+ attribute_deprecated char *title; ///< chapter title
#endif
AVMetadata *metadata;
} AVChapter;
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_MAX_STREAMS
#define MAX_STREAMS 20
#endif
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 LIBAVFORMAT_VERSION_INT < (53<<16)
- char title[512];
- char author[512];
- char copyright[512];
- char comment[512];
- char album[512];
- int year; /**< ID3 year, 0 if none */
- int track; /**< track number, 0 if none */
- char genre[32]; /**< ID3 genre */
+#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. */
+ /**
+ * 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. */
+ /**
+ * 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. */
+
+ /**
+ * 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 */
+
+ /**
+ * 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. */
+
+ /**
+ * 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 LIBAVFORMAT_VERSION_INT < (53<<16)
+#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 */
+ int64_t data_offset; /**< offset of the first packet */
int index_built;
int mux_rate;
#define AVFMT_NOOUTPUTLOOP -1
#define AVFMT_INFINITEOUTPUTLOOP 0
- /** number of times to loop output in formats that support it */
+ /**
+ * number of times to loop output in formats that support it
+ */
int loop_output;
int flags;
#define AVFMT_FLAG_RTP_HINT 0x0040 ///< Add RTP hinting to the output file
int loop_input;
- /** decoding: size of data to probe; encoding: unused. */
+
+ /**
+ * decoding: size of data to probe; encoding: unused.
+ */
unsigned int probesize;
/**
* 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.
struct AVPacketList *next;
} AVPacketList;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
-extern AVInputFormat *first_iformat;
-extern AVOutputFormat *first_oformat;
+#if FF_API_FIRST_FORMAT
+attribute_deprecated extern AVInputFormat *first_iformat;
+attribute_deprecated extern AVOutputFormat *first_oformat;
#endif
/**
/* utils.c */
void av_register_input_format(AVInputFormat *format);
void av_register_output_format(AVOutputFormat *format);
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_GUESS_FORMAT
attribute_deprecated AVOutputFormat *guess_stream_format(const char *short_name,
const char *filename,
const char *mime_type);
*/
AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max);
+/**
+ * Probe a bytestream to determine the input format. Each time a probe returns
+ * with a score that is too low, the probe buffer size is increased and another
+ * attempt is made. When the maximum probe size is reached, the input format
+ * with the highest score is returned.
+ *
+ * @param pb the bytestream to probe
+ * @param fmt the input format is put here
+ * @param filename the filename of the stream
+ * @param logctx the log context
+ * @param offset the offset within the bytestream to probe from
+ * @param max_probe_size the maximum probe buffer size (zero for default)
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code otherwise
+ */
+int av_probe_input_buffer(ByteIOContext *pb, AVInputFormat **fmt,
+ const char *filename, void *logctx,
+ unsigned int offset, unsigned int max_probe_size);
+
/**
* Allocate all the structures needed to read an input stream.
* This does not open the needed codecs for decoding the stream[s].
int buf_size,
AVFormatParameters *ap);
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_ALLOC_FORMAT_CONTEXT
/**
* @deprecated Use avformat_alloc_context() instead.
*/
/**
* Allocate an AVFormatContext.
- * Can be freed with av_free() but do not forget to free everything you
- * explicitly allocated as well!
+ * avformat_free_context() can be used to free the context and everything
+ * allocated by the framework within it.
*/
AVFormatContext *avformat_alloc_context(void);
*/
int av_find_stream_info(AVFormatContext *ic);
+/**
+ * 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.
+ */
+int av_find_best_stream(AVFormatContext *ic,
+ enum AVMediaType type,
+ int wanted_stream_nb,
+ int related_stream,
+ AVCodec **decoder_ret,
+ int flags);
+
/**
* Read a transport packet from a media file.
*
/**
* 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
*/
void av_close_input_file(AVFormatContext *s);
+/**
+ * Free an AVFormatContext and all its streams.
+ * @param s context to free
+ */
+void avformat_free_context(AVFormatContext *s);
+
/**
* Add a new stream to a media file.
*
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.
+ * Set the pts for a given stream. If the new values would be invalid
+ * (<= 0), it leaves the AVStream unchanged.
*
* @param s stream
* @param pts_wrap_bits number of bits effectively used by the pts
*/
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.
int flags, int64_t *ts_ret,
int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
-/** media file output */
+/**
+ * media file output
+ */
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
/**
const char *url,
int is_output);
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_PARSE_FRAME_PARAM
/**
* Parse width and height out of string str.
* @deprecated Use av_parse_video_frame_size instead.
*/
int64_t parse_date(const char *datestr, int duration);
-/** Get the current time in microseconds. */
+/**
+ * Get the current time in microseconds.
+ */
int64_t av_gettime(void);
/* ffm-specific for ffserver */
projects / ffmpeg / blobdiff