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sdp: Restore the original mp4 format h264 extradata if converted

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If the sdp is generated before the rtp muxer is initialized
(e.g. as when called from the rtsp muxer), this has to be done,
otherwise the rtp muxer doesn't know that the input really is
in mp4 format.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2011-12-09 21:00:09 +02:00
parent e0a3c287b4
commit 0ebd4083e1
1 changed files with 17 additions and 0 deletions
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17
libavformat/sdp.c
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@@ -156,6 +156,8 @@ static char *extradata2psets(AVCodecContext *c)
char *psets, *p;
const uint8_t *r;
const char *pset_string = "; sprop-parameter-sets=";
uint8_t *orig_extradata = NULL;
int orig_extradata_size = 0;
if (c->extradata_size > MAX_EXTRADATA_SIZE) {
av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
@@ -172,6 +174,15 @@ static char *extradata2psets(AVCodecContext *c)
return NULL;
}
orig_extradata_size = c->extradata_size;
orig_extradata = av_mallocz(orig_extradata_size +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!orig_extradata) {
av_bitstream_filter_close(bsfc);
return NULL;
}
memcpy(orig_extradata, c->extradata, orig_extradata_size);
av_bitstream_filter_filter(bsfc, c, NULL, &dummy_p, &dummy_int, NULL, 0, 0);
av_bitstream_filter_close(bsfc);
}
@@ -179,6 +190,7 @@ static char *extradata2psets(AVCodecContext *c)
psets = av_mallocz(MAX_PSET_SIZE);
if (psets == NULL) {
av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
av_free(orig_extradata);
return NULL;
}
memcpy(psets, pset_string, strlen(pset_string));
@@ -208,6 +220,11 @@ static char *extradata2psets(AVCodecContext *c)
p += strlen(p);
r = r1;
}
if (orig_extradata) {
av_free(c->extradata);
c->extradata = orig_extradata;
c->extradata_size = orig_extradata_size;
}
return psets;
}