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* passing ImageDescriptions for SVQ3 (Vertical300K.sorenson works)

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(IMHO only SMI chunk should be stored in extradata)

Originally committed as revision 1863 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2003-05-12 15:39:38 +00:00
parent 445ad18d65
commit 9ed83b0a93
1 changed files with 38 additions and 6 deletions
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44
libavformat/mov.c
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@ -50,6 +50,10 @@
*/
//#define DEBUG
#ifdef DEBUG
#include <stdio.h>
#include <fcntl.h>
#endif
/* allows chunk splitting - should work now... */
/* in case you can't read a file, try commenting */
@ -302,8 +306,8 @@ static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
a.offset = atom.offset;
if(atom.size < 0)
atom.size = 0x0FFFFFFFFFFFFFFF;
if (atom.size < 0)
atom.size = 0x7fffffffffffffffLL;
while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
a.size = atom.size;
a.type=0L;
@ -447,6 +451,9 @@ static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
while(get_byte(pb) && (++len < (atom.size - 24)));
} else {
/* .mov: PASCAL string */
#ifdef DEBUG
char* buf;
#endif
len = get_byte(pb);
#ifdef DEBUG
buf = (uint8_t*) av_malloc(len+1);
@ -631,6 +638,26 @@ static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
return 0;
}
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
// currently SVQ3 decoder expect full STSD header - so let's fake it
// this should be fixed and just SMI header should be passed
av_free(st->codec.extradata);
st->codec.extradata_size = 0x5a + atom.size;
st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
if (st->codec.extradata) {
int i;
strcpy(st->codec.extradata, "SVQ3"); // fake
get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
//printf("Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
} else
url_fskip(pb, atom.size);
return 0;
}
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
@ -1092,9 +1119,13 @@ static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
atom.type = MKTAG( 'm', 'o', 'o', 'v' );
atom.offset = 0;
atom.size = moov_len;
#ifdef DEBUG
{ int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
#endif
ret = mov_read_default(c, &ctx, atom);
av_free(moov_data);
av_free(cmov_data);
return ret;
}
#endif
@ -1130,6 +1161,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
@ -1248,7 +1280,7 @@ static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
atom.size = url_filesize(url_fileno(pb));
else
atom.size = 0x7FFFFFFFFFFFFFFF;
atom.size = 0x7FFFFFFFFFFFFFFFLL;
#ifdef DEBUG
printf("filesz=%Ld\n", atom.size);
@ -1307,7 +1339,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
{
MOVContext *mov = (MOVContext *) s->priv_data;
MOVStreamContext *sc;
int64_t offset = 0x0FFFFFFFFFFFFFFF;
int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
int i;
int size;
size = 0x0FFFFFFF;
@ -1347,7 +1379,7 @@ again:
//printf("SELETED %Ld i:%d\n", offset, i);
}
}
if (!sc || offset==0x0FFFFFFFFFFFFFFF)
if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
return -1;
sc->next_chunk++;
@ -1361,7 +1393,7 @@ again:
if(!sc->is_ff_stream) {
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
mov->next_chunk_offset = offset;
offset = 0x0FFFFFFFFFFFFFFF;
offset = 0x0FFFFFFFFFFFFFFFLL;
goto again;
}