virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-10 06:10:52 +02:00
Code Issues Releases Activity

Parse strf mov atoms

Browse Source 
This fixes roundup issue 1270.

Originally committed as revision 22894 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö
2010-04-16 20:36:24 +00:00
parent 6086731299
commit 653d7aeb61
1 changed files with 29 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
libavformat/mov.c
View File

@@ -811,6 +811,34 @@ static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
return 0; return 0;
} }
/**
* An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself,
* but can have extradata appended at the end after the 40 bytes belonging
* to the struct.
*/
static int mov_read_strf(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
{
AVStream *st;
if (c->fc->nb_streams < 1)
return 0;
if (atom.size <= 40)
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
if((uint64_t)atom.size > (1<<30))
return -1;
av_free(st->codec->extradata);
st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata_size = atom.size - 40;
url_fskip(pb, 40);
get_buffer(pb, st->codec->extradata, atom.size - 40);
return 0;
}
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom) static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
{ {
AVStream *st; AVStream *st;
@@ -2161,6 +2189,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('s','t','b','l'), mov_read_default }, { MKTAG('s','t','b','l'), mov_read_default },
{ MKTAG('s','t','c','o'), mov_read_stco }, { MKTAG('s','t','c','o'), mov_read_stco },
{ MKTAG('s','t','p','s'), mov_read_stps }, { MKTAG('s','t','p','s'), mov_read_stps },
{ MKTAG('s','t','r','f'), mov_read_strf },
{ MKTAG('s','t','s','c'), mov_read_stsc }, { MKTAG('s','t','s','c'), mov_read_stsc },
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */