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Introduce av_metadata_copy() to copy metadata from one struct to another.

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Originally committed as revision 26330 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2011-01-14 19:30:55 +00:00
parent ca32f7f208
commit 7f88a5bf9b
3 changed files with 26 additions and 18 deletions
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24
ffmpeg.c
View File

@ -1862,7 +1862,6 @@ static int copy_chapters(int infile, int outfile)
for (i = 0; i < is->nb_chapters; i++) {
AVChapter *in_ch = is->chapters[i], *out_ch;
AVMetadataTag *t = NULL;
int64_t ts_off = av_rescale_q(start_time - input_files_ts_offset[infile],
AV_TIME_BASE_Q, in_ch->time_base);
int64_t rt = (recording_time == INT64_MAX) ? INT64_MAX :
@ -1884,8 +1883,7 @@ static int copy_chapters(int infile, int outfile)
out_ch->end = FFMIN(rt, in_ch->end - ts_off);
if (metadata_chapters_autocopy)
while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
os->nb_chapters++;
os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
@ -2105,7 +2103,6 @@ static int transcode(AVFormatContext **output_files,
/* for each output stream, we compute the right encoding parameters */
for(i=0;i<nb_ostreams;i++) {
AVMetadataTag *t = NULL;
ost = ost_table[i];
os = output_files[ost->file_index];
ist = ist_table[ost->source_index];
@ -2114,9 +2111,8 @@ static int transcode(AVFormatContext **output_files,
icodec = ist->st->codec;
if (metadata_streams_autocopy)
while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
}
av_metadata_copy(&ost->st->metadata, ist->st->metadata,
AV_METADATA_DONT_OVERWRITE);
ost->st->disposition = ist->st->disposition;
codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
@ -2368,7 +2364,6 @@ static int transcode(AVFormatContext **output_files,
for (i=0;i<nb_meta_data_maps;i++) {
AVFormatContext *files[2];
AVMetadata **meta[2];
AVMetadataTag *mtag;
int j;
#define METADATA_CHECK_INDEX(index, nb_elems, desc)\
@ -2411,18 +2406,15 @@ static int transcode(AVFormatContext **output_files,
}
}
mtag=NULL;
while((mtag=av_metadata_get(*meta[1], "", mtag, AV_METADATA_IGNORE_SUFFIX)))
av_metadata_set2(meta[0], mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
}
/* copy global metadata by default */
if (metadata_global_autocopy) {
AVMetadataTag *t = NULL;
while ((t = av_metadata_get(input_files[0]->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
for (i = 0; i < nb_output_files; i++)
av_metadata_set2(&output_files[i]->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
AV_METADATA_DONT_OVERWRITE);
}
/* copy chapters according to chapter maps */
@ -3692,7 +3684,6 @@ static void opt_output_file(const char *filename)
int input_has_video, input_has_audio, input_has_subtitle;
AVFormatParameters params, *ap = &params;
AVOutputFormat *file_oformat;
AVMetadataTag *tag = NULL;
if (!strcmp(filename, "-"))
filename = "pipe:";
@ -3760,8 +3751,7 @@ static void opt_output_file(const char *filename)
oc->timestamp = recording_timestamp;
while ((tag = av_metadata_get(metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
av_metadata_set2(&oc->metadata, tag->key, tag->value, 0);
av_metadata_copy(&oc->metadata, metadata, 0);
av_metadata_free(&metadata);
}

12
libavformat/avformat.h
View File

@ -22,7 +22,7 @@
#define AVFORMAT_AVFORMAT_H
#define LIBAVFORMAT_VERSION_MAJOR 52
#define LIBAVFORMAT_VERSION_MINOR 92
#define LIBAVFORMAT_VERSION_MINOR 93
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
@ -226,6 +226,16 @@ attribute_deprecated void av_metadata_conv(struct AVFormatContext *ctx, const AV
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.
*/

8
libavformat/metadata.c
View File

@ -158,3 +158,11 @@ void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv,
for (i=0; i<ctx->nb_programs; i++)
ff_metadata_conv(&ctx->programs[i]->metadata, d_conv, s_conv);
}
void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags)
{
AVMetadataTag *t = NULL;
while ((t = av_metadata_get(src, "", t, AV_METADATA_IGNORE_SUFFIX)))
av_metadata_set2(dst, t->key, t->value, flags);
}