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avidec: export creation_date as metadata 

Originally committed as revision 25785 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2010-11-21 19:00:07 +00:00
parent 58935b25d0
commit 933875a0f5
1 changed files with 27 additions and 0 deletions
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27
libavformat/avidec.c
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@ -22,6 +22,7 @@
//#define DEBUG
//#define DEBUG_SEEK
#include <strings.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/bswap.h"
#include "libavcodec/bytestream.h"
@ -282,6 +283,24 @@ static void avi_read_info(AVFormatContext *s, uint64_t end)
}
}
static const char months[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
static void avi_metadata_creation_time(AVMetadata **metadata, char *date)
{
char month[4], time[9], buffer[64];
int i, day, year;
/* parse standard AVI date format (ie. "Mon Mar 10 15:04:43 2003") */
if (sscanf(date, "%*3s%*[ ]%3s%*[ ]%2d%*[ ]%8s%*[ ]%4d",
month, &day, time, &year) == 4)
for (i=0; i<12; i++)
if (!strcasecmp(month, months[i])) {
snprintf(buffer, sizeof(buffer), "%.4d-%.2d-%.2d %s",
year, i+1, day, time);
av_metadata_set2(metadata, "creation_time", buffer, 0);
}
}
static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVIContext *avi = s->priv_data;
@ -337,6 +356,14 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
avi_read_info(s, list_end);
break;
case MKTAG('I', 'D', 'I', 'T'): {
unsigned char date[64] = {0};
size += (size & 1);
size -= get_buffer(pb, date, FFMIN(size, sizeof(date)-1));
url_fskip(pb, size);
avi_metadata_creation_time(&s->metadata, date);
break;
}
case MKTAG('d', 'm', 'l', 'h'):
avi->is_odml = 1;
url_fskip(pb, size + (size & 1));