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avformat/avformat: Improve doxy style 

Mostly re-indenting and adding some missing references.
This commit is contained in:
Marvin Scholz 2022-09-15 03:39:38 +02:00 committed by Anton Khirnov
parent eb60ffb144
commit 99f6d0bdde
1 changed files with 100 additions and 74 deletions
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174
libavformat/avformat.h
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@ -1898,8 +1898,8 @@ const AVOutputFormat *av_muxer_iterate(void **opaque);
/**
* Iterate over all registered demuxers.
*
* @param opaque a pointer where libavformat will store the iteration state. Must
* point to NULL to start the iteration.
* @param opaque a pointer where libavformat will store the iteration state.
* Must point to NULL to start the iteration.
*
* @return the next registered demuxer or NULL when the iteration is
* finished
@ -1957,12 +1957,13 @@ AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c);
/**
* Wrap an existing array as stream side data.
*
* @param st stream
* @param st stream
* @param type side information type
* @param data the side data array. It must be allocated with the av_malloc()
* family of functions. The ownership of the data is transferred to
* st.
* @param size side information size
*
* @return zero on success, a negative AVERROR code on failure. On failure,
* the stream is unchanged and the data remains owned by the caller.
*/
@ -1973,8 +1974,9 @@ int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
* Allocate new information from stream.
*
* @param stream stream
* @param type desired side information type
* @param size side information size
* @param type desired side information type
* @param size side information size
*
* @return pointer to fresh allocated data or NULL otherwise
*/
uint8_t *av_stream_new_side_data(AVStream *stream,
@ -1983,9 +1985,10 @@ uint8_t *av_stream_new_side_data(AVStream *stream,
* Get side information from stream.
*
* @param stream stream
* @param type desired side information type
* @param size If supplied, *size will be set to the size of the side data
* or to zero if the desired side data is not present.
* @param type desired side information type
* @param size If supplied, *size will be set to the size of the side data
* or to zero if the desired side data is not present.
*
* @return pointer to data if present or NULL otherwise
*/
uint8_t *av_stream_get_side_data(const AVStream *stream,
@ -2003,16 +2006,17 @@ AVProgram *av_new_program(AVFormatContext *s, int id);
* avformat_free_context() can be used to free the context and
* everything allocated by the framework within it.
*
* @param ctx pointee is set to the created format context, or to NULL in
* case of failure
* @param oformat format to use for allocating the context, if NULL
* format_name and filename are used instead
* @param format_name the name of output format to use for allocating the
* context, if NULL filename is used instead
* @param filename the name of the filename to use for allocating the
* context, may be NULL
* @return >= 0 in case of success, a negative AVERROR code in case of
* failure
* @param ctx pointee is set to the created format context,
* or to NULL in case of failure
* @param oformat format to use for allocating the context, if NULL
* format_name and filename are used instead
* @param format_name the name of output format to use for allocating the
* context, if NULL filename is used instead
* @param filename the name of the filename to use for allocating the
* context, may be NULL
*
* @return >= 0 in case of success, a negative AVERROR code in case of
* failure
*/
int avformat_alloc_output_context2(AVFormatContext **ctx, const AVOutputFormat *oformat,
const char *format_name, const char *filename);
@ -2067,15 +2071,16 @@ const AVInputFormat *av_probe_input_format3(const AVProbeData *pd,
* 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 url the url of the stream
* @param logctx the log context
* @param offset the offset within the bytestream to probe from
* @param pb the bytestream to probe
* @param fmt the input format is put here
* @param url the url 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 the score in case of success, a negative value corresponding to an
* the maximal score is AVPROBE_SCORE_MAX
* AVERROR code otherwise
* AVERROR code otherwise
*/
int av_probe_input_buffer2(AVIOContext *pb, const AVInputFormat **fmt,
const char *url, void *logctx,
@ -2092,16 +2097,19 @@ int av_probe_input_buffer(AVIOContext *pb, const AVInputFormat **fmt,
* Open an input stream and read the header. The codecs are not opened.
* The stream must be closed with avformat_close_input().
*
* @param ps Pointer to user-supplied AVFormatContext (allocated by avformat_alloc_context).
* May be a pointer to NULL, in which case an AVFormatContext is allocated by this
* function and written into ps.
* Note that a user-supplied AVFormatContext will be freed on failure.
* @param url URL of the stream to open.
* @param fmt If non-NULL, this parameter forces a specific input format.
* Otherwise the format is autodetected.
* @param options A dictionary filled with AVFormatContext and demuxer-private options.
* On return this parameter will be destroyed and replaced with a dict containing
* options that were not found. May be NULL.
* @param ps Pointer to user-supplied AVFormatContext (allocated by
* avformat_alloc_context). May be a pointer to NULL, in
* which case an AVFormatContext is allocated by this
* function and written into ps.
* Note that a user-supplied AVFormatContext will be freed
* on failure.
* @param url URL of the stream to open.
* @param fmt If non-NULL, this parameter forces a specific input format.
* Otherwise the format is autodetected.
* @param options A dictionary filled with AVFormatContext and demuxer-private
* options.
* On return this parameter will be destroyed and replaced with
* a dict containing options that were not found. May be NULL.
*
* @return 0 on success, a negative AVERROR on failure.
*
@ -2140,6 +2148,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options);
* @param last the last found program, the search will start after this
* program, or from the beginning if it is NULL
* @param s stream index
*
* @return the next program which belongs to s, NULL if no program is found or
* the last program is not among the programs of ic.
*/
@ -2164,10 +2173,12 @@ void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
* @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.
*/
@ -2211,13 +2222,14 @@ int av_read_frame(AVFormatContext *s, AVPacket *pkt);
* 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.
* @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
* @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.
* @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,
@ -2239,12 +2251,12 @@ int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp,
* keyframes (this may not be supported by all demuxers).
* If flags contain AVSEEK_FLAG_BACKWARD, it is ignored.
*
* @param s media file handle
* @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
* @param max_ts largest acceptable timestamp
* @param flags flags
* @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.
@ -2308,16 +2320,22 @@ void avformat_close_input(AVFormatContext **s);
* Allocate the stream private data and write the stream header to
* an output media file.
*
* @param s Media file handle, must be allocated with avformat_alloc_context().
* Its oformat field must be set to the desired output format;
* Its pb field must be set to an already opened AVIOContext.
* @param options An AVDictionary filled with AVFormatContext and muxer-private options.
* On return this parameter will be destroyed and replaced with a dict containing
* options that were not found. May be NULL.
* @param s Media file handle, must be allocated with
* avformat_alloc_context().
* Its \ref AVFormatContext.oformat "oformat" field must be set
* to the desired output format;
* Its \ref AVFormatContext.pb "pb" field must be set to an
* already opened ::AVIOContext.
* @param options An ::AVDictionary filled with AVFormatContext and
* muxer-private options.
* On return this parameter will be destroyed and replaced with
* a dict containing options that were not found. May be NULL.
*
* @return AVSTREAM_INIT_IN_WRITE_HEADER on success if the codec had not already been fully initialized in avformat_init,
* AVSTREAM_INIT_IN_INIT_OUTPUT on success if the codec had already been fully initialized in avformat_init,
* negative AVERROR on failure.
* @retval AVSTREAM_INIT_IN_WRITE_HEADER On success, if the codec had not already been
* fully initialized in avformat_init_output().
* @retval AVSTREAM_INIT_IN_INIT_OUTPUT On success, if the codec had already been fully
* initialized in avformat_init_output().
* @retval AVERROR A negative AVERROR on failure.
*
* @see av_opt_find, av_dict_set, avio_open, av_oformat_next, avformat_init_output.
*/
@ -2326,20 +2344,26 @@ int avformat_write_header(AVFormatContext *s, AVDictionary **options);
/**
* Allocate the stream private data and initialize the codec, but do not write the header.
* May optionally be used before avformat_write_header to initialize stream parameters
* May optionally be used before avformat_write_header() to initialize stream parameters
* before actually writing the header.
* If using this function, do not pass the same options to avformat_write_header.
* If using this function, do not pass the same options to avformat_write_header().
*
* @param s Media file handle, must be allocated with avformat_alloc_context().
* Its oformat field must be set to the desired output format;
* Its pb field must be set to an already opened AVIOContext.
* @param options An AVDictionary filled with AVFormatContext and muxer-private options.
* On return this parameter will be destroyed and replaced with a dict containing
* options that were not found. May be NULL.
* @param s Media file handle, must be allocated with
* avformat_alloc_context().
* Its \ref AVFormatContext.oformat "oformat" field must be set
* to the desired output format;
* Its \ref AVFormatContext.pb "pb" field must be set to an
* already opened ::AVIOContext.
* @param options An ::AVDictionary filled with AVFormatContext and
* muxer-private options.
* On return this parameter will be destroyed and replaced with
* a dict containing options that were not found. May be NULL.
*
* @return AVSTREAM_INIT_IN_WRITE_HEADER on success if the codec requires avformat_write_header to fully initialize,
* AVSTREAM_INIT_IN_INIT_OUTPUT on success if the codec has been fully initialized,
* negative AVERROR on failure.
* @retval AVSTREAM_INIT_IN_WRITE_HEADER On success, if the codec requires
* avformat_write_header to fully initialize.
* @retval AVSTREAM_INIT_IN_INIT_OUTPUT On success, if the codec has been fully
* initialized.
* @retval AVERROR Anegative AVERROR on failure.
*
* @see av_opt_find, av_dict_set, avio_open, av_oformat_next, avformat_write_header.
*/
@ -2484,11 +2508,11 @@ int av_write_trailer(AVFormatContext *s);
* 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
* 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
*/
const AVOutputFormat *av_guess_format(const char *short_name,
const char *filename,
@ -2512,9 +2536,11 @@ enum AVCodecID av_guess_codec(const AVOutputFormat *fmt, const char *short_name,
* time_base units
* @param[out] wall absolute time when that packet whas output,
* in microsecond
* @return 0 if OK, AVERROR(ENOSYS) if the format does not support it
* Note: some formats or devices may not allow to measure dts and wall
* atomically.
* @retval 0 Success
* @retval AVERROR(ENOSYS) The format does not support it
*
* @note Some formats or devices may not allow to measure dts and wall
* atomically.
*/
int av_get_output_timestamp(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall);