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pcm/PcmMix: use the SampleTraits library for MixRamp

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This commit is contained in:
Max Kellermann 2013-12-01 22:49:50 +01:00
parent 04ba40981f
commit 023482406f
1 changed files with 22 additions and 15 deletions
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37
src/pcm/PcmMix.cxx
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@ -123,30 +123,37 @@ pcm_add_vol(void *buffer1, const void *buffer2, size_t size,
gcc_unreachable();
}
template<typename T, typename U, unsigned bits>
static T
PcmAdd(T _a, T _b)
template<SampleFormat F, class Traits=SampleTraits<F>>
static typename Traits::value_type
PcmAdd(typename Traits::value_type _a, typename Traits::value_type _b)
{
U a(_a), b(_b);
return PcmClamp<T, U, bits>(a + b);
typename Traits::long_type a(_a), b(_b);
return PcmClamp<typename Traits::value_type,
typename Traits::long_type,
Traits::BITS>(a + b);
}
template<typename T, typename U, unsigned bits>
template<SampleFormat F, class Traits=SampleTraits<F>>
static void
PcmAdd(T *a, const T *b, unsigned n)
PcmAdd(typename Traits::pointer_type a,
typename Traits::const_pointer_type b,
size_t n)
{
for (size_t i = 0; i != n; ++i)
a[i] = PcmAdd<T, U, bits>(a[i], b[i]);
a[i] = PcmAdd<F, Traits>(a[i], b[i]);
}
template<typename T, typename U, unsigned bits>
template<SampleFormat F, class Traits=SampleTraits<F>>
static void
PcmAddVoid(void *a, const void *b, size_t size)
{
constexpr size_t sample_size = sizeof(T);
constexpr size_t sample_size = Traits::SAMPLE_SIZE;
assert(size % sample_size == 0);
PcmAdd<T, U, bits>((T *)a, (const T *)b, size / sample_size);
PcmAdd<F, Traits>(typename Traits::pointer_type(a),
typename Traits::const_pointer_type(b),
size / sample_size);
}
static void
@ -171,19 +178,19 @@ pcm_add(void *buffer1, const void *buffer2, size_t size,
return false;
case SampleFormat::S8:
PcmAddVoid<int8_t, int32_t, 8>(buffer1, buffer2, size);
PcmAddVoid<SampleFormat::S8>(buffer1, buffer2, size);
return true;
case SampleFormat::S16:
PcmAddVoid<int16_t, int32_t, 16>(buffer1, buffer2, size);
PcmAddVoid<SampleFormat::S16>(buffer1, buffer2, size);
return true;
case SampleFormat::S24_P32:
PcmAddVoid<int32_t, int64_t, 24>(buffer1, buffer2, size);
PcmAddVoid<SampleFormat::S24_P32>(buffer1, buffer2, size);
return true;
case SampleFormat::S32:
PcmAddVoid<int32_t, int64_t, 32>(buffer1, buffer2, size);
PcmAddVoid<SampleFormat::S32>(buffer1, buffer2, size);
return true;
case SampleFormat::FLOAT: