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this fails horribly

This commit is contained in:
tildearrow 2022-12-04 22:00:17 -05:00
parent eaa9a5879a
commit 9026c1e03e
1 changed files with 80 additions and 1 deletions
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81
src/engine/brrUtils.c
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@ -56,8 +56,87 @@
last2=last1; \
last1=nextDec; \
void brrEncodeBlock(short* buf, unsigned char* out, unsigned char flag, short* last1, short* last2) {
void brrEncodeBlock(const short* buf, unsigned char* out, unsigned char range, unsigned char filter, short* last1, short* last2) {
// encode one block using BRR
switch (filter) {
case 0:
for (int j=0; j<16; j++) {
}
break;
case 1:
for (int j=0; j<16; j++) {
int s=NEXT_SAMPLE;
pred1[j]=s-(((int)o1f1*15)>>4);
if (pred1[j]<-32768) pred1[j]=-32768;
if (pred1[j]>32767) pred1[j]=32767;
o0=pred1[j]>>range1;
if (range1) if (pred1[j]&(1<<(range1>>1))) o0++;
if (o0>7) o0=7;
if (o0<-8) o0=-8;
o=o0&15;
if (j&1) {
next1[j>>1]|=o;
} else {
next1[j>>1]=o<<4;
}
nextDec=o;
DO_ONE_DEC(range1);
//o2f1=last2<<1;
o1f1=last1<<1;
}
break;
case 2:
for (int j=0; j<16; j++) {
int s=NEXT_SAMPLE;
pred2[j]=s+(((int)o2f2*15)>>4)-(((int)o1f2*61)>>5);
if (pred2[j]<-32768) pred2[j]=-32768;
if (pred2[j]>32767) pred2[j]=32767;
o0=pred2[j]>>range2;
if (range2) if (pred2[j]&(1<<(range2>>1))) o0++;
if (o0>7) o0=7;
if (o0<-8) o0=-8;
o=o0&15;
if (j&1) {
next2[j>>1]|=o;
} else {
next2[j>>1]=o<<4;
}
nextDec=o;
DO_ONE_DEC(range2);
o2f2=last2<<1;
o1f2=last1<<1;
}
break;
case 3:
for (int j=0; j<16; j++) {
int s=NEXT_SAMPLE;
pred3[j]=s+(((int)o2f3*13)>>4)-(((int)o1f3*115)>>6);
if (pred3[j]<-32768) pred3[j]=-32768;
if (pred3[j]>32767) pred3[j]=32767;
o0=pred3[j]>>range3;
if (range3) if (pred3[j]&(1<<(range3>>1))) o0++;
if (o0>7) o0=7;
if (o0<-8) o0=-8;
o=o0&15;
if (j&1) {
next3[j>>1]|=o;
} else {
next3[j>>1]=o<<4;
}
nextDec=o;
DO_ONE_DEC(range3);
o2f3=last2<<1;
o1f3=last1<<1;
}
break;
}
}
long brrEncode(short* buf, unsigned char* out, long len, long loopStart) {