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support saving 8-bit samples as-is

This commit is contained in:
tildearrow 2022-06-16 23:22:40 -05:00
parent cdbcf7fcd3
commit 4d44c577e7
1 changed files with 23 additions and 2 deletions
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25
src/engine/sample.cpp
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@ -51,7 +51,14 @@ bool DivSample::save(const char* path) {
si.channels=1;
si.samplerate=rate;
si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
switch (depth) {
case 8: // 8-bit
si.format=SF_FORMAT_PCM_U8|SF_FORMAT_WAV;
break;
default: // 16-bit
si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
break;
}
f=sf_open(path,SFM_WRITE,&si);
@ -77,7 +84,21 @@ bool DivSample::save(const char* path) {
}
sf_command(f, SFC_SET_INSTRUMENT, &inst, sizeof(inst));
sf_writef_short(f,data16,samples);
switch (depth) {
case 8: {
// convert from signed to unsigned
unsigned char* buf=new unsigned char[length8];
for (size_t i=0; i<length8; i++) {
buf[i]=data8[i]^0x80;
}
sf_write_raw(f,buf,length8);
delete[] buf;
break;
}
default:
sf_write_raw(f,data16,length16);
break;
}
sf_close(f);