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fix multi channels (>2)

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fix loopEnd point when there's empty rows on file

still need some tests

git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@675 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
fastelbja 2009-08-29 21:50:34 +00:00
parent 7541c76985
commit 6d478b33a8
1 changed files with 52 additions and 6 deletions
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58
src/meta/ps2_mib.c
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@ -60,6 +60,7 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
int loopToEnd=0;
int forceNoLoop=0;
int gotEmptyLine=0;
uint8_t gotMIH=0;
@ -99,21 +100,24 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
if(readOffset<(int32_t)(fileLength*0.5)) {
if(memcmp(testBuffer+2, mibBuffer+2,0x0e)) {
bDoUpdateInterleave=1;
if(doChannelUpdate) {
doChannelUpdate=0;
channel_count++;
}
if(channel_count<2)
bDoUpdateInterleave=1;
}
testBuffer[0]=0;
if(!memcmp(testBuffer,mibBuffer,0x10)) {
gotEmptyLine=1;
if(bDoUpdateInterleave) {
bDoUpdateInterleave=0;
interleave=readOffset-0x10;
}
if(((readOffset-0x10)==channel_count*interleave) && (channel_count!=1)) {
if(((readOffset-0x10)==(channel_count*interleave))) {
doChannelUpdate=1;
}
}
@ -213,12 +217,32 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
if((interleave>0x10) && (channel_count==1))
channel_count=2;
if(interleave==0) interleave=0x10;
// further check on channel_count ...
if(gotEmptyLine)
{
int newChannelCount = 0;
readOffset=0;
do
{
newChannelCount++;
read_streamfile(testBuffer,readOffset,0x10,streamFile);
readOffset+=interleave;
} while(!memcmp(testBuffer,mibBuffer,16));
newChannelCount--;
if(newChannelCount>channel_count)
channel_count=newChannelCount;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,(loopEnd!=0));
if (!vgmstream) goto fail;
if(interleave==0) interleave=0x10;
/* fill in the vital statistics */
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
@ -257,7 +281,7 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
vgmstream->num_samples = (int32_t)(fileLength/16/channel_count*28);
}
if(loopStart!=0) {
if(loopEnd!=0) {
if(vgmstream->channels==1) {
vgmstream->loop_start_sample = loopStart/16*18;
vgmstream->loop_end_sample = loopEnd/16*28;
@ -272,7 +296,7 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
if(loopEnd=fileLength)
{
vgmstream->loop_end_sample=(loopEnd/16*14*channel_count)/channel_count;
vgmstream->loop_end_sample=(loopEnd/16*28)/channel_count;
} else {
vgmstream->loop_end_sample = ((((loopEnd/vgmstream->interleave_block_size)-1)*vgmstream->interleave_block_size)/16*14*channel_count)/channel_count;
@ -284,6 +308,28 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
}
}
if(loopToEnd)
{
// try to find if there's no empty line ...
int emptySamples=0;
for(i=0; i<16;i++) {
mibBuffer[i]=0;
}
readOffset=fileLength-0x10;
do {
read_streamfile(testBuffer,readOffset,0x10,streamFile);
if(!memcmp(mibBuffer,testBuffer,16))
{
emptySamples+=28;
}
readOffset-=0x10;
} while(!memcmp(testBuffer,mibBuffer,16));
vgmstream->loop_end_sample-=(emptySamples*channel_count);
}
vgmstream->meta_type = meta_PS2_MIB;
if (gotMIH) {