libavformat/metadata.c File Reference

#include <strings.h>
#include "avformat.h"
#include "metadata.h"

Go to the source code of this file.

Functions
AVMetadataTag *	av_metadata_get (AVMetadata *m, const char *key, const AVMetadataTag *prev, int flags)
	Gets a metadata element with matching key.
int	av_metadata_set (AVMetadata **pm, const char *key, const char *value)
	Sets the given tag in m, overwriting an existing tag.
void	av_metadata_free (AVMetadata **pm)
	Frees all the memory allocated for an AVMetadata struct.
static void	metadata_conv (AVMetadata **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
void	av_metadata_conv (AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
	Convert all the metadata sets from ctx according to the source and destination conversion tables.

---

Function Documentation

void av_metadata_conv	(	struct AVFormatContext *	ctx,
		const AVMetadataConv *	d_conv,
		const AVMetadataConv *	s_conv
	)

Convert all the metadata sets from ctx according to the source and destination conversion tables.

Parameters:

	d_conv	destination tags format conversion table
	s_conv	source tags format conversion table

Definition at line 127 of file metadata.c.

Referenced by av_encode(), and opt_output_file().

void av_metadata_free

(

AVMetadata **

pm

)

Frees all the memory allocated for an AVMetadata struct.

Definition at line 81 of file metadata.c.

Referenced by av_close_input_stream(), av_exit(), and metadata_conv().

AVMetadataTag* av_metadata_get	(	AVMetadata *	m,
		const char *	key,
		const AVMetadataTag *	prev,
		int	flags
	)

Gets a metadata element with matching key.

Parameters:

	prev	Set to the previous matching element to find the next.
	flags	Allows case as well as suffix-insensitive comparisons.

Returns:

Found tag or NULL, changing key or value leads to undefined behavior.

Definition at line 26 of file metadata.c.

Referenced by asf_write_header1(), av_encode(), av_metadata_set(), avi_write_info_tag2(), dump_format(), dump_stream_format(), dump_stream_info(), metadata_conv(), mkv_write_header(), mkv_write_tracks(), mov_write_3gp_udta_tag(), mov_write_header(), mov_write_string_metadata(), mov_write_trkn_tag(), mov_write_uuidusmt_tag(), mpegts_write_header(), mpegts_write_pmt(), rv10_write_header(), and write_globalinfo().

int av_metadata_set	(	AVMetadata **	pm,
		const char *	key,
		const char *	value
	)

Sets the given tag in m, overwriting an existing tag.

Parameters:

	key	tag key to add to m (will be av_strduped)
	value	tag value to add to m (will be av_strduped)

Returns:

>= 0 on success otherwise an error code <0

Definition at line 49 of file metadata.c.

Referenced by ape_tag_read_field(), av_encode(), avi_read_tag(), decode_info_header(), ff_new_chapter(), get_meta(), get_tag(), http_prepare_data(), id3v1_get_string(), id3v1_parse_tag(), id3v2_read_ttag(), matroska_convert_tag(), matroska_read_header(), metadata_conv(), mov_read_mdhd(), mov_read_trkn(), mov_read_udta_string(), new_audio_stream(), new_subtitle_stream(), nsv_parse_NSVf_header(), opt_output_file(), pmt_cb(), prepare_sdp_description(), r3d_read_red1(), rm_read_metadata(), rpl_read_header(), sdp_parse_line(), sdt_cb(), vorbis_comment(), and wc3_read_header().

static void metadata_conv	(	AVMetadata **	pm,
		const AVMetadataConv *	d_conv,
		const AVMetadataConv *	s_conv
	)			[static]

Definition at line 95 of file metadata.c.

Referenced by av_metadata_conv().