static stream_processor *
find_stream_processor (stream_set *set, ogg_page *page)
{ uint32_t serial = ogg_page_serialno (page) ;
int i, invalid = 0 ;
stream_processor *stream ;
for (i = 0 ; i < set->used ; i++)
{ if (serial == set->streams [i].serial)
{ /* We have a match! */
stream = & (set->streams [i]) ;
set->in_headers = 0 ;
/* if we have detected EOS, then this can't occur here. */
if (stream->end)
{ stream->isillegal = 1 ;
return stream ;
}
stream->isnew = 0 ;
stream->end = ogg_page_eos (page) ;
stream->serial = serial ;
return stream ;
} ;
} ;
/* If there are streams open, and we've reached the end of the
** headers, then we can't be starting a new stream.
** XXX: might this sometimes catch ok streams if EOS flag is missing,
** but the stream is otherwise ok?
*/
if (streams_open (set) && !set->in_headers)
invalid = 1 ;
set->in_headers = 1 ;
if (set->allocated < set->used)
stream = &set->streams [set->used] ;
else
{ set->allocated += 5 ;
set->streams = realloc (set->streams, sizeof (stream_processor) * set->allocated) ;
stream = &set->streams [set->used] ;
} ;
set->used++ ;
stream->isnew = 1 ;
stream->isillegal = invalid ;
{ int res ;
ogg_packet packet ;
/* We end up processing the header page twice, but that's ok. */
ogg_stream_init (&stream->ostream, serial) ;
ogg_stream_pagein (&stream->ostream, page) ;
res = ogg_stream_packetout (&stream->ostream, &packet) ;
if (res <= 0)
return NULL ;
else if (packet.bytes >= 7 && memcmp (packet.packet, "\x01vorbis", 7) == 0)
{ stream->lastgranulepos = 0 ;
vorbis_comment_init (&stream->vcomment) ;
vorbis_info_init (&stream->vinfo) ;
} ;
res = ogg_stream_packetout (&stream->ostream, &packet) ;
/* re-init, ready for processing */
ogg_stream_clear (&stream->ostream) ;
ogg_stream_init (&stream->ostream, serial) ;
}
stream->end = ogg_page_eos (page) ;
stream->serial = serial ;
return stream ;
} /* find_stream_processor */
static stream_processor *find_stream_processor(stream_set *set, ogg_page *page)
{
ogg_uint32_t serial = ogg_page_serialno(page);
int i, found = 0;
int invalid = 0;
int constraint = 0;
stream_processor *stream;
for(i=0; i < set->used; i++) {
if(serial == set->streams[i].serial) {
/* We have a match! */
found = 1;
stream = &(set->streams[i]);
set->in_headers = 0;
/* if we have detected EOS, then this can't occur here. */
if(stream->end) {
stream->isillegal = 1;
stream->constraint_violated = CONSTRAINT_PAGE_AFTER_EOS;
return stream;
}
stream->isnew = 0;
stream->start = ogg_page_bos(page);
stream->end = ogg_page_eos(page);
stream->serial = serial;
return stream;
}
}
/* If there are streams open, and we've reached the end of the
* headers, then we can't be starting a new stream.
* XXX: might this sometimes catch ok streams if EOS flag is missing,
* but the stream is otherwise ok?
*/
if(streams_open(set) && !set->in_headers) {
constraint = CONSTRAINT_MUXING_VIOLATED;
invalid = 1;
}
set->in_headers = 1;
if(set->allocated < set->used)
stream = &set->streams[set->used];
else {
set->allocated += 5;
set->streams = realloc(set->streams, sizeof(stream_processor)*
set->allocated);
stream = &set->streams[set->used];
}
set->used++;
stream->num = set->used; /* We count from 1 */
stream->isnew = 1;
stream->isillegal = invalid;
stream->constraint_violated = constraint;
{
int res;
ogg_packet packet;
/* We end up processing the header page twice, but that's ok. */
ogg_stream_init(&stream->os, serial);
ogg_stream_pagein(&stream->os, page);
res = ogg_stream_packetout(&stream->os, &packet);
if(res <= 0) {
DPRINTF(E_WARN, L_SCAN, "Invalid header page, no packet found\n");
null_start(stream);
}
else if(packet.bytes >= 7 && memcmp(packet.packet, "\001vorbis", 7)==0)
vorbis_start(stream);
else if(packet.bytes >= 8 && memcmp(packet.packet, "OggMIDI\0", 8)==0)
other_start(stream, "MIDI");
else
other_start(stream, NULL);
res = ogg_stream_packetout(&stream->os, &packet);
if(res > 0) {
DPRINTF(E_WARN, L_SCAN, "Invalid header page in stream %d, "
"contains multiple packets\n", stream->num);
}
/* re-init, ready for processing */
ogg_stream_clear(&stream->os);
ogg_stream_init(&stream->os, serial);
}
stream->start = ogg_page_bos(page);
stream->end = ogg_page_eos(page);
stream->serial = serial;
/* if(stream->serial == 0 || stream->serial == -1) {
info(_("Note: Stream %d has serial number %d, which is legal but may "
"cause problems with some tools."), stream->num, stream->serial);
}*/
return stream;
}
