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IMA DO MY ADPCM

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This commit is contained in:
tildearrow 2024-03-17 15:05:07 -05:00
parent 83e7b2fbb8
commit 229766c478
7 changed files with 30 additions and 10 deletions
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10
src/engine/platform/nds.cpp
View file

@ -156,7 +156,7 @@ void DivPlatformNDS::tick(bool sysTick) {
if (chan[i].pcm || i<8) {
DivSample* s=parent->getSample(chan[i].sample);
switch (s->depth) {
//case DIV_SAMPLE_DEPTH_YMZ_ADPCM: ctrl=0x40; break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: ctrl=0x40; break;
case DIV_SAMPLE_DEPTH_8BIT: ctrl=0x00; break;
case DIV_SAMPLE_DEPTH_16BIT: ctrl=0x20; break;
default: break;
@ -179,7 +179,7 @@ void DivPlatformNDS::tick(bool sysTick) {
}
if (chan[i].audPos>0) {
switch (s->depth) {
//case DIV_SAMPLE_DEPTH_YMZ_ADPCM: start+=chan[i].audPos/2; end-=(chan[i].audPos/8); break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: start+=chan[i].audPos/2; end-=(chan[i].audPos/8); break;
case DIV_SAMPLE_DEPTH_8BIT: start+=chan[i].audPos; end-=(chan[i].audPos/4); break;
case DIV_SAMPLE_DEPTH_16BIT: start+=chan[i].audPos*2; end-=(chan[i].audPos/2); break;
default: break;
@ -188,8 +188,7 @@ void DivPlatformNDS::tick(bool sysTick) {
if (s->isLoopable()) {
if (chan[i].audPos>0) {
switch (s->depth) {
/*
case DIV_SAMPLE_DEPTH_YMZ_ADPCM:
case DIV_SAMPLE_DEPTH_IMA_ADPCM:
loopStart=(s->loopStart-chan[i].audPos)/8;
loopEnd=(s->loopEnd-s->loopStart)/8;
if (chan[i].audPos>(unsigned int)s->loopStart) {
@ -197,7 +196,6 @@ void DivPlatformNDS::tick(bool sysTick) {
loopEnd-=(chan[i].audPos-s->loopStart)/8;
}
break;
*/
case DIV_SAMPLE_DEPTH_8BIT:
loopStart=(s->loopStart-chan[i].audPos)/4;
loopEnd=(s->loopEnd-s->loopStart)/4;
@ -218,7 +216,7 @@ void DivPlatformNDS::tick(bool sysTick) {
}
} else {
switch (s->depth) {
//case DIV_SAMPLE_DEPTH_YMZ_ADPCM: loopStart=s->loopStart/8; loopEnd=(s->loopEnd-s->loopStart)/8; break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: loopStart=s->loopStart/8; loopEnd=(s->loopEnd-s->loopStart)/8; break;
case DIV_SAMPLE_DEPTH_8BIT: loopStart=s->loopStart/4; loopEnd=(s->loopEnd-s->loopStart)/4; break;
case DIV_SAMPLE_DEPTH_16BIT: loopStart=s->loopStart/2; loopEnd=(s->loopEnd-s->loopStart)/2; break;
default: break;

22
src/engine/sample.cpp
View file

@ -35,6 +35,7 @@ extern "C" {
#include "../../extern/adpcm/ymb_codec.h"
#include "../../extern/adpcm/ymz_codec.h"
}
#include "../../extern/adpcm-xq/adpcm-lib.h"
#include "brrUtils.h"
DivSampleHistory::~DivSampleHistory() {
@ -599,7 +600,7 @@ bool DivSample::initInternal(DivSampleDepth d, int count) {
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: // IMA ADPCM
if (dataIMA!=NULL) delete[] dataIMA;
lengthIMA=(count+1)/2;
lengthIMA=4+((count+1)/2);
dataIMA=new unsigned char[lengthIMA];
memset(dataIMA,0,lengthIMA);
break;
@ -1288,7 +1289,7 @@ void DivSample::render(unsigned int formatMask) {
}
break;
case DIV_SAMPLE_DEPTH_IMA_ADPCM: // IMA ADPCM
// TODO: decode
if (adpcm_decode_block(data16,dataIMA,lengthIMA,1)==0) logE("oh crap!");
break;
default:
return;
@ -1461,9 +1462,22 @@ void DivSample::render(unsigned int formatMask) {
dataC219[i]=x|(negate?0x80:0);
}
}
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_IMA_ADPCM)) { // C219
if (NOT_IN_FORMAT(DIV_SAMPLE_DEPTH_IMA_ADPCM)) { // IMA ADPCM
if (!initInternal(DIV_SAMPLE_DEPTH_IMA_ADPCM,samples)) return;
// TODO: encode
int delta[2];
delta[0]=0;
delta[1]=0;
void* codec=adpcm_create_context(1,4,NOISE_SHAPING_OFF,delta);
if (codec==NULL) {
logE("oh no IMA encoder could not be created!");
} else {
size_t whyPointer=0;
adpcm_encode_block(codec,dataIMA,&whyPointer,data16,samples);
if (whyPointer!=lengthIMA) logW("IMA length mismatch! %d -> %d!=%d",(int)samples,(int)whyPointer,(int)lengthIMA);
adpcm_free_context(codec);
}
}
}