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GUI: implement sample sel operations

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plenty of them
This commit is contained in:
tildearrow 2022-03-21 02:43:52 -05:00
parent a68dbed760
commit 2df7658fd0
3 changed files with 313 additions and 16 deletions
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79
src/engine/sample.cpp
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@ -179,6 +179,85 @@ bool DivSample::resize(unsigned int count) {
return false;
}
bool DivSample::strip(unsigned int begin, unsigned int end) {
if (begin>samples) begin=samples;
if (end>samples) end=samples;
int count=samples-(end-begin);
if (count<=0) return resize(0);
if (depth==8) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(8,count);
if (begin>0) {
memcpy(data8,oldData8,begin);
}
if (samples-end>0) {
memcpy(data8+begin,oldData8+end,samples-end);
}
delete[] oldData8;
} else {
// do nothing
return true;
}
samples=count;
return true;
} else if (depth==16) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(16,count);
if (begin>0) {
memcpy(data16,oldData16,sizeof(short)*begin);
}
if (samples-end>0) {
memcpy(&(data16[begin]),&(oldData16[end]),sizeof(short)*(samples-end));
}
delete[] oldData16;
} else {
// do nothing
return true;
}
samples=count;
return true;
}
return false;
}
bool DivSample::trim(unsigned int begin, unsigned int end) {
int count=end-begin;
if (count==0) return true;
if (begin==0 && end==samples) return true;
if (depth==8) {
if (data8!=NULL) {
signed char* oldData8=data8;
data8=NULL;
initInternal(8,count);
memcpy(data8,oldData8+begin,count);
delete[] oldData8;
} else {
// do nothing
return true;
}
samples=count;
return true;
} else if (depth==16) {
if (data16!=NULL) {
short* oldData16=data16;
data16=NULL;
initInternal(16,count);
memcpy(data16,&(oldData16[begin]),sizeof(short)*count);
delete[] oldData16;
} else {
// do nothing
return true;
}
samples=count;
return true;
}
return false;
}
#define RESAMPLE_BEGIN \
if (samples<1) return true; \
int finalCount=(double)samples*(r/(double)rate); \