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Add -f framemd5 muxer similar to framecrc.

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Originally committed as revision 23289 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2010-05-24 17:49:26 +00:00
parent 9bbe9a0dc1
commit 0e765181c4
3 changed files with 51 additions and 12 deletions
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1
libavformat/Makefile
View File

@ -78,6 +78,7 @@ OBJS-$(CONFIG_FLV_DEMUXER) += flvdec.o
OBJS-$(CONFIG_FLV_MUXER) += flvenc.o avc.o
OBJS-$(CONFIG_FOURXM_DEMUXER) += 4xm.o
OBJS-$(CONFIG_FRAMECRC_MUXER) += framecrcenc.o
OBJS-$(CONFIG_FRAMEMD5_MUXER) += md5enc.o
OBJS-$(CONFIG_GIF_MUXER) += gif.o
OBJS-$(CONFIG_GSM_DEMUXER) += raw.o id3v2.o
OBJS-$(CONFIG_GXF_DEMUXER) += gxf.o

1
libavformat/allformats.c
View File

@ -89,6 +89,7 @@ void av_register_all(void)
REGISTER_MUXDEMUX (FLV, flv);
REGISTER_DEMUXER (FOURXM, fourxm);
REGISTER_MUXER (FRAMECRC, framecrc);
REGISTER_MUXER (FRAMEMD5, framemd5);
REGISTER_MUXER (GIF, gif);
REGISTER_DEMUXER (GSM, gsm);
REGISTER_MUXDEMUX (GXF, gxf);

61
libavformat/md5enc.c
View File

@ -24,6 +24,23 @@
#define PRIVSIZE 512
static void md5_finish(struct AVFormatContext *s, char *buf)
{
uint8_t md5[16];
int i, offset = strlen(buf);
av_md5_final(s->priv_data, md5);
for (i = 0; i < sizeof(md5); i++) {
snprintf(buf + offset, 3, "%02"PRIx8, md5[i]);
offset += 2;
}
buf[offset] = '\n';
buf[offset+1] = 0;
put_buffer(s->pb, buf, strlen(buf));
put_flush_packet(s->pb);
}
#if CONFIG_MD5_MUXER
static int write_header(struct AVFormatContext *s)
{
if (PRIVSIZE < av_md5_size) {
@ -42,20 +59,9 @@ static int write_packet(struct AVFormatContext *s, AVPacket *pkt)
static int write_trailer(struct AVFormatContext *s)
{
uint8_t md5[16];
char buf[64] = "MD5=";
int i, offset = strlen(buf);
av_md5_final(s->priv_data, md5);
for (i = 0; i < sizeof(md5); i++) {
snprintf(buf + offset, 3, "%02"PRIx8, md5[i]);
offset += 2;
}
buf[offset] = '\n';
buf[offset+1] = 0;
put_buffer(s->pb, buf, strlen(buf));
put_flush_packet(s->pb);
md5_finish(s, buf);
return 0;
}
@ -71,3 +77,34 @@ AVOutputFormat md5_muxer = {
write_packet,
write_trailer,
};
#endif
#if CONFIG_FRAMEMD5_MUXER
static int framemd5_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
char buf[256];
if (PRIVSIZE < av_md5_size) {
av_log(s, AV_LOG_ERROR, "Insuffient size for md5 context\n");
return -1;
}
av_md5_init(s->priv_data);
av_md5_update(s->priv_data, pkt->data, pkt->size);
snprintf(buf, sizeof(buf) - 64, "%d, %"PRId64", %d, ", pkt->stream_index, pkt->dts, pkt->size);
md5_finish(s, buf);
return 0;
}
AVOutputFormat framemd5_muxer = {
"framemd5",
NULL_IF_CONFIG_SMALL("Per-frame MD5 testing format"),
NULL,
"",
PRIVSIZE,
CODEC_ID_PCM_S16LE,
CODEC_ID_RAWVIDEO,
NULL,
framemd5_write_packet,
NULL,
};
#endif