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old .dmf loading improvements 

- YMU759 samples are now properly loaded
- improvements to version 7 and 8 format handling
This commit is contained in:
tildearrow 2022-05-14 17:23:33 -05:00
parent ce253230ce
commit 2fc637494f
1 changed files with 7 additions and 8 deletions
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15
src/engine/fileOps.cpp
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@ -190,7 +190,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
ds.timeBase=reader.readC();
ds.speed1=reader.readC();
if (ds.version>0x05) {
if (ds.version>0x07) {
ds.speed2=reader.readC();
ds.pal=reader.readC();
ds.hz=(ds.pal)?60:50;
@ -788,7 +788,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
pitch=reader.readC();
vol=reader.readC();
}
if (ds.version<=0x05) {
if (ds.version<=0x08) {
sample->rate=ymuSampleRate*400;
}
if (ds.version>0x15) {
@ -798,15 +798,15 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
sample->depth=16;
}
} else {
if (ds.version>0x05) {
if (ds.version>0x08) {
sample->depth=16;
} else {
// it appears samples were stored as ADPCM back then
sample->depth=6;
sample->depth=3;
}
}
if (length>0) {
if (ds.version>0x05) {
if (ds.version>0x08) {
if (ds.version<0x0b) {
data=new short[1+(length/2)];
reader.read(data,length);
@ -842,8 +842,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
delete[] data;
} else {
// ADPCM?
// it appears to be a slightly modified version of ADPCM-B!
// YMZ ADPCM
adpcmData=new unsigned char[length];
logV("%x",reader.tell());
reader.read(adpcmData,length);
@ -854,7 +853,7 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
logE("%d: error while initializing sample!",i);
}
memcpy(sample->dataB,adpcmData,length);
memcpy(sample->dataZ,adpcmData,length);
delete[] adpcmData;
}
}