Commit 329f3473 authored by Monty's avatar Monty
Browse files

Commit a vorbisfile short-file fix; consists of several fixes to...

Commit a vorbisfile short-file fix; consists of several fixes to reinitialization post-seek.  Fixes gentoo BZ# 276594

Important fix for games that use many small sound files; necessary to fix playback for single-audio-page Vorbis files.


svn path=/trunk/vorbis/; revision=16228
parent cbf28777
......@@ -675,8 +675,13 @@ static int _fetch_and_process_packet(OggVorbis_File *vf,
/* extract packets from page */
while(1){
/* process a packet if we can. If the machine isn't loaded,
neither is a page */
if(vf->ready_state==STREAMSET){
int ret=_make_decode_ready(vf);
if(ret<0)return ret;
}
/* process a packet if we can. */
if(vf->ready_state==INITSET){
while(1) {
ogg_packet op;
......@@ -844,11 +849,6 @@ static int _fetch_and_process_packet(OggVorbis_File *vf,
link=0;
}
}
{
int ret=_make_decode_ready(vf);
if(ret<0)return ret;
}
}
/* the buffered page is the data we want, and we're ready for it;
......@@ -1255,7 +1255,9 @@ int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){
int lastblock=0;
int accblock=0;
int thisblock=0;
int eosflag=0;
int lastflag=0;
int firstflag=0;
ogg_int64_t pagepos=-1;
ogg_stream_init(&work_os,vf->current_serialno); /* get the memory ready */
ogg_stream_reset(&work_os); /* eliminate the spurious OV_HOLE
......@@ -1276,7 +1278,14 @@ int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){
thisblock=0;
}else{
if(eosflag)
/* We can't get a guaranteed correct pcm position out of the
last page in a stream because it might have a 'short'
granpos, which can only be detected in the presence of a
preceeding page. However, if the last page is also the first
page, the granpos rules of a first page take precedence. Not
only that, but for first==last, the EOS page must be treated
as if its a normal first page for the stream to open/play. */
if(lastflag && !firstflag)
ogg_stream_packetout(&vf->os,NULL);
else
if(lastblock)accblock+=(lastblock+thisblock)>>2;
......@@ -1290,6 +1299,7 @@ int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){
for(i=0;i<link;i++)
granulepos+=vf->pcmlengths[i*2+1];
vf->pcm_offset=granulepos-accblock;
if(vf->pcm_offset<0)vf->pcm_offset=0;
break;
}
lastblock=thisblock;
......@@ -1300,7 +1310,8 @@ int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){
}
if(!lastblock){
if(_get_next_page(vf,&og,-1)<0){
pagepos=_get_next_page(vf,&og,-1);
if(pagepos<0){
vf->pcm_offset=ov_pcm_total(vf,-1);
break;
}
......@@ -1341,12 +1352,13 @@ int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos){
ogg_stream_reset_serialno(&vf->os,serialno);
ogg_stream_reset_serialno(&work_os,serialno);
vf->ready_state=STREAMSET;
firstflag=(pagepos<=vf->dataoffsets[link]);
}
ogg_stream_pagein(&vf->os,&og);
ogg_stream_pagein(&work_os,&og);
eosflag=ogg_page_eos(&og);
lastflag=ogg_page_eos(&og);
}
}
......
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