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avformat/latmenc: check packet side data for AAC extradata updates

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This is in preparation for a following patch.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-04-13 16:06:02 -03:00
parent 7631f14bb3
commit 8b3ec51de8
1 changed files with 18 additions and 4 deletions
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22
libavformat/latmenc.c
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@ -146,20 +146,34 @@ static void latm_write_frame_header(AVFormatContext *s, PutBitContext *bs)
static int latm_write_packet(AVFormatContext *s, AVPacket *pkt)
{
LATMContext *ctx = s->priv_data;
AVCodecParameters *par = s->streams[0]->codecpar;
AVIOContext *pb = s->pb;
PutBitContext bs;
int i, len;
uint8_t loas_header[] = "\x56\xe0\x00";
if (s->streams[0]->codecpar->codec_id == AV_CODEC_ID_AAC_LATM)
if (par->codec_id == AV_CODEC_ID_AAC_LATM)
return ff_raw_write_packet(s, pkt);
if (!s->streams[0]->codecpar->extradata) {
if (!par->extradata) {
if(pkt->size > 2 && pkt->data[0] == 0x56 && (pkt->data[1] >> 4) == 0xe &&
(AV_RB16(pkt->data + 1) & 0x1FFF) + 3 == pkt->size)
return ff_raw_write_packet(s, pkt);
else
return AVERROR_INVALIDDATA;
else {
uint8_t *side_data;
int side_data_size = 0, ret;
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
&side_data_size);
if (side_data_size) {
if (latm_decode_extradata(ctx, side_data, side_data_size) < 0)
return AVERROR_INVALIDDATA;
ret = ff_alloc_extradata(par, side_data_size);
if (ret < 0)
return ret;
memcpy(par->extradata, side_data, side_data_size);
}
}
}
if (pkt->size > 0x1fff)