mux_utils.c File Reference

#include "libavutil/dict.h"
#include "libavutil/dict_internal.h"
#include "libavutil/internal.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/parseutils.h"
#include "avformat.h"
#include "avio.h"
#include "internal.h"
#include "mux.h"

Go to the source code of this file.

Macros
#define	READ_BLOCK

Functions
int	avformat_query_codec (const AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
	Test if the given container can store a codec. More...
int	ff_format_shift_data (AVFormatContext *s, int64_t read_start, int shift_size)
	Make shift_size amount of space at read_start by shifting data in the output at read_start until the current IO position. More...
int	ff_format_output_open (AVFormatContext *s, const char *url, AVDictionary **options)
	Utility function to open IO stream of output format. More...
int	ff_parse_creation_time_metadata (AVFormatContext *s, int64_t *timestamp, int return_seconds)
	Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails. More...
int	ff_standardize_creation_time (AVFormatContext *s)
	Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string. More...

Macro Definition Documentation

READ_BLOCK

#define READ_BLOCK

Value:

    do {                                                             \
    read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], shift_size);  \
    read_buf_id ^= 1;                                                               \
} while (0)

Function Documentation

ff_format_shift_data()

int ff_format_shift_data	(	AVFormatContext *	s,
		int64_t	read_start,
		int	shift_size
	)

Make shift_size amount of space at read_start by shifting data in the output at read_start until the current IO position.

The underlying IO context must be seekable.

Definition at line 60 of file mux_utils.c.

Referenced by mkv_write_trailer(), shift_data(), and write_header().

ff_format_output_open()

int ff_format_output_open	(	AVFormatContext *	s,
		const char *	url,
		AVDictionary **	options
	)

Utility function to open IO stream of output format.

Parameters

s	AVFormatContext
url	URL or file name to open for writing @options optional options which will be passed to io_open callback

Returns

>=0 on success, negative AVERROR in case of failure

Definition at line 116 of file mux_utils.c.

Referenced by fifo_thread_write_header(), and open_slave().

ff_parse_creation_time_metadata()

int ff_parse_creation_time_metadata	(	AVFormatContext *	s,
		int64_t *	timestamp,
		int	return_seconds
	)

Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails.

Parameters

s	AVFormatContext
timestamp	parsed timestamp in microseconds, only set on successful parsing
return_seconds	set this to get the number of seconds in timestamp instead of microseconds

Returns

1 if OK, 0 if the metadata was not present, AVERROR(EINVAL) on parse error

Definition at line 126 of file mux_utils.c.

Referenced by asf_write_header1(), dv_init_mux(), ff_standardize_creation_time(), gxf_write_umf_material_description(), mkv_write_info(), mov_write_header(), and mxf_init().

ff_standardize_creation_time()

int ff_standardize_creation_time

(

AVFormatContext *

s

)

Standardize creation_time metadata in AVFormatContext to an ISO-8601 timestamp string.

Parameters

s	AVFormatContext

Returns

<0 on error

Definition at line 143 of file mux_utils.c.

Referenced by caf_write_header(), ff_ape_write_tag(), ff_id3v2_write_metadata(), lrc_write_header(), smjpeg_write_header(), write_globalinfo(), write_metadata(), and write_table_entries_attrib().