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support for mono sadb

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git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@574 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
This commit is contained in:
halleyscometsw 2009-02-04 01:05:20 +00:00
parent f2b83c7a5f
commit b1b0ca2f98
1 changed files with 26 additions and 17 deletions
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39
src/meta/ngc_dsp_std.c
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@ -606,55 +606,60 @@ VGMSTREAM * init_vgmstream_sadb(STREAMFILE *streamFile) {
struct dsp_header ch0_header,ch1_header;
int i;
int channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("sad",filename_extension(filename))) goto fail;
if (read_dsp_header(&ch0_header, 0x80, streamFile)) goto fail;
if (read_dsp_header(&ch1_header, 0xe0, streamFile)) goto fail;
/* check header magic */
if (read_32bitBE(0x0,streamFile) != 0x73616462) goto fail; /* "sadb" */
channel_count = read_8bit(0x32, streamFile);
if (channel_count != 1 && channel_count != 2) goto fail;
if (read_dsp_header(&ch0_header, 0x80, streamFile)) goto fail;
if (channel_count == 2 && read_dsp_header(&ch1_header, 0xe0, streamFile)) goto fail;
start_offset = read_32bitBE(0x48,streamFile);
interleave = 16;
/* check initial predictor/scale */
if (ch0_header.initial_ps != (uint8_t)read_8bit(start_offset,streamFile))
goto fail;
if (ch1_header.initial_ps != (uint8_t)read_8bit(start_offset+interleave,streamFile))
if (channel_count == 2 && ch1_header.initial_ps != (uint8_t)read_8bit(start_offset+interleave,streamFile))
goto fail;
/* check type==0 and gain==0 */
if (ch0_header.format || ch0_header.gain ||
ch1_header.format || ch1_header.gain)
(channel_count == 2 &&(ch1_header.format || ch1_header.gain)))
goto fail;
/* check for agreement */
if (
if ( channel_count == 2 &&(
ch0_header.sample_count != ch1_header.sample_count ||
ch0_header.nibble_count != ch1_header.nibble_count ||
ch0_header.sample_rate != ch1_header.sample_rate ||
ch0_header.loop_flag != ch1_header.loop_flag ||
ch0_header.loop_start_offset != ch1_header.loop_start_offset ||
ch0_header.loop_end_offset != ch1_header.loop_end_offset
) goto fail;
)) goto fail;
if (ch0_header.loop_flag) {
off_t loop_off;
/* check loop predictor/scale */
loop_off = ch0_header.loop_start_offset/16*8;
loop_off = (loop_off/interleave*interleave*2) + (loop_off%interleave);
loop_off = ch0_header.loop_start_offset/8/channel_count*8;
loop_off = (loop_off/interleave*interleave*channel_count) + (loop_off%interleave);
if (ch0_header.loop_ps != (uint8_t)read_8bit(start_offset+loop_off,streamFile))
goto fail;
if (ch1_header.loop_ps != (uint8_t)read_8bit(start_offset+loop_off+interleave,streamFile))
if (channel_count == 2 &&
ch1_header.loop_ps != (uint8_t)read_8bit(start_offset+loop_off+interleave,streamFile))
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(2,ch0_header.loop_flag);
vgmstream = allocate_vgmstream(channel_count,ch0_header.loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
@ -668,13 +673,14 @@ VGMSTREAM * init_vgmstream_sadb(STREAMFILE *streamFile) {
ch0_header.loop_end_offset)+1;
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->layout_type = channel_count == 2 ? layout_interleave : layout_none;
vgmstream->interleave_block_size = interleave;
vgmstream->meta_type = meta_DSP_SADB;
/* coeffs */
for (i=0;i<16;i++) {
vgmstream->ch[0].adpcm_coef[i] = ch0_header.coef[i];
if (channel_count == 2)
vgmstream->ch[1].adpcm_coef[i] = ch1_header.coef[i];
}
@ -682,15 +688,18 @@ VGMSTREAM * init_vgmstream_sadb(STREAMFILE *streamFile) {
/* always 0 that I've ever seen, but for completeness... */
vgmstream->ch[0].adpcm_history1_16 = ch0_header.initial_hist1;
vgmstream->ch[0].adpcm_history2_16 = ch0_header.initial_hist2;
vgmstream->ch[1].adpcm_history1_16 = ch1_header.initial_hist1;
vgmstream->ch[1].adpcm_history2_16 = ch1_header.initial_hist2;
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (channel_count == 2) {
vgmstream->ch[1].adpcm_history1_16 = ch1_header.initial_hist1;
vgmstream->ch[1].adpcm_history2_16 = ch1_header.initial_hist2;
vgmstream->ch[1].streamfile = vgmstream->ch[0].streamfile;
}
if (!vgmstream->ch[0].streamfile) goto fail;
/* open the file for reading */
for (i=0;i<2;i++) {
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=start_offset+i*interleave;
}