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add more raw sample import options

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This commit is contained in:
tildearrow 2023-08-19 18:01:12 -05:00
parent c8222fd491
commit dba96812aa
2 changed files with 76 additions and 21 deletions
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47
src/engine/engine.cpp
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@ -3676,13 +3676,11 @@ DivSample* DivEngine::sampleFromFileRaw(const char* path, DivSampleDepth depth,
return NULL;
}
if (channels<1) {
lastError="invalid channel count";
return NULL;
channels=1;
}
if (depth!=DIV_SAMPLE_DEPTH_8BIT && depth!=DIV_SAMPLE_DEPTH_16BIT) {
if (channels!=1) {
lastError="channel count has to be 1 for non-8/16-bit format";
return NULL;
channels=1;
}
}
BUSY_BEGIN;
@ -3767,6 +3765,7 @@ DivSample* DivEngine::sampleFromFileRaw(const char* path, DivSampleDepth depth,
samples=lenDivided*2;
break;
case DIV_SAMPLE_DEPTH_8BIT:
case DIV_SAMPLE_DEPTH_MULAW:
samples=lenDivided;
break;
case DIV_SAMPLE_DEPTH_BRR:
@ -3836,11 +3835,45 @@ DivSample* DivEngine::sampleFromFileRaw(const char* path, DivSampleDepth depth,
}
delete[] buf;
// swap nibbles if needed
if (swapNibbles) {
unsigned char* b=(unsigned char*)sample->getCurBuf();
for (unsigned int i=0; i<sample->getCurBufLen(); i++) {
b[i]=(b[i]<<4)|(b[i]>>4);
switch (depth) {
case DIV_SAMPLE_DEPTH_1BIT:
case DIV_SAMPLE_DEPTH_1BIT_DPCM:
// reverse bit order
for (unsigned int i=0; i<sample->getCurBufLen(); i++) {
b[i]=(
((b[i]&128)?1:0)|
((b[i]&64)?2:0)|
((b[i]&32)?4:0)|
((b[i]&16)?8:0)|
((b[i]&8)?16:0)|
((b[i]&4)?32:0)|
((b[i]&2)?64:0)|
((b[i]&1)?128:0)
);
}
break;
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
case DIV_SAMPLE_DEPTH_QSOUND_ADPCM:
case DIV_SAMPLE_DEPTH_ADPCM_A:
case DIV_SAMPLE_DEPTH_ADPCM_B:
case DIV_SAMPLE_DEPTH_VOX:
// swap nibbles
for (unsigned int i=0; i<sample->getCurBufLen(); i++) {
b[i]=(b[i]<<4)|(b[i]>>4);
}
break;
case DIV_SAMPLE_DEPTH_MULAW:
// Namco to G.711
// Namco: smmmmxxx
// G.711: sxxxmmmm (^0xff)
for (unsigned int i=0; i<sample->getCurBufLen(); i++) {
b[i]=(((b[i]&7)<<4)|(((b[i]>>3)&15)^((b[i]&0x80)?15:0))|(b[i]&0x80))^0xff;
}
break;
default:
break;
}
}