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cwVectOps.h : Added interleave() and deinterleave()

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This commit is contained in:
kevin 2023-02-14 20:56:39 -05:00
parent e57997a1e5
commit 1830d70f92
1 changed files with 34 additions and 5 deletions
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39
cwVectOps.h
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@ -51,19 +51,23 @@ namespace cw
// Move,fill,copy
//
template< typename T0, typename T1 >
void copy( T0* v0, const T1* v1, unsigned n )
void copy( T0* v0, const T1* v1, unsigned n )
{
for(unsigned i=0; i<n; ++i)
v0[i] = (T0)v1[i]; // Note: copy with convert - not the same as memcpy.
}
template< typename T0, typename T1 >
void fill( T0* v, unsigned n, const T1& value=0 )
void fill( T0* v, unsigned n, const T1& value, unsigned dst_offset )
{
for(unsigned i=0; i<n; ++i)
v[i] = value;
for(unsigned i=0,j=0; i<n; ++i,j+=dst_offset)
v[j] = value;
}
template< typename T0, typename T1 >
void fill( T0* v, unsigned n, const T1& value=0 )
{ fill(v,n,value,1); }
template< typename T >
void zero( T* v, unsigned n )
{ fill(v,n,0); }
@ -342,6 +346,31 @@ namespace cw
//==================================================================================================================
// Signal Processing
//
template< typename T0, typename T1 >
void interleave( T0* v0, const T1* v1, unsigned frameN, unsigned dstChCnt )
{
// v0[] = { LRLRLRLR ], v1[] = [ LLLLRRRR ]
for(unsigned k=0; k<dstChCnt; ++k)
{
unsigned n = k*frameN;
for(unsigned i=0,j=k; i<frameN; ++i,j+=dstChCnt)
v0[j] = (T0)v1[i+n];
}
}
template< typename T0, typename T1 >
void deinterleave( T0* v0, const T1* v1, unsigned frameN, unsigned srcChCnt )
{
// v0[] = [ LLLLRRRR ], v1[] = { LRLRLRLR ]
for(unsigned k=0; k<srcChCnt; ++k)
{
unsigned n = k*frameN;
for(unsigned i=0,j=k; i<frameN; ++i,j+=srcChCnt)
v0[i+n] = (T0)v1[j];
}
}
template< typename T >
unsigned phasor( T* y, unsigned n, T srate, T hz, unsigned init_idx=0 )