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add support for IMA encoding

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git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@676 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
fastelbja 2009-08-29 22:45:51 +00:00
parent 6d478b33a8
commit 8101ace4ed
1 changed files with 24 additions and 4 deletions
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28
src/meta/ps2_snd.c
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@ -18,7 +18,8 @@ VGMSTREAM * init_vgmstream_ps2_snd(STREAMFILE *streamFile) {
/* check header */
if (read_32bitBE(0x0,streamFile) !=0x53534e44) goto fail;
loop_flag = 0;
/* Force Loop 0->end */
loop_flag = 1;
channel_count = read_16bitLE(0x0a,streamFile);
/* build the VGMSTREAM */
@ -28,13 +29,32 @@ VGMSTREAM * init_vgmstream_ps2_snd(STREAMFILE *streamFile) {
/* fill in the vital statistics */
start_offset = read_32bitLE(0x04,streamFile)+8;
vgmstream->sample_rate = (uint16_t)read_16bitLE(0xe,streamFile);
vgmstream->coding_type = coding_PCM16LE;
vgmstream->num_samples = (get_streamfile_size(streamFile)-start_offset)/2/channel_count;
vgmstream->layout_type = layout_interleave;
if(read_8bit(0x08,streamFile)==1) {
vgmstream->coding_type = coding_INT_DVI_IMA;
}
else
vgmstream->coding_type = coding_PCM16LE;
vgmstream->num_samples = read_32bitLE(0x16,streamFile);
vgmstream->interleave_block_size = (uint16_t)read_16bitLE(0x12,streamFile);
if((get_streamfile_size(streamFile)-start_offset)%vgmstream->interleave_block_size)
{
/* not sure if this is right ... */
vgmstream->layout_type = layout_interleave_shortblock;
vgmstream->interleave_smallblock_size = ((get_streamfile_size(streamFile)-start_offset)%vgmstream->interleave_block_size)/vgmstream->channels;
} else {
vgmstream->layout_type = layout_interleave;
}
vgmstream->meta_type = meta_PS2_SND;
if(loop_flag) {
vgmstream->loop_start_sample=0;
vgmstream->loop_end_sample=vgmstream->num_samples;
}
/* open the file for reading */
{
int i;