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| author | Max Kellermann <max@duempel.org> | 2013-12-01 20:37:30 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2013-12-01 22:44:16 +0100 |
| commit | 04ba40981f559a1847403f4ef2975cd7c50761ff (patch) | |
| tree | 482ff8e9abc3a38afcee20d6914aa38b2e6572ae /src/pcm/PcmMix.cxx | |
| parent | fc10bdf24d0492f1eb1686c55dbc692a40720bf2 (diff) | |
| download | mpd-04ba40981f559a1847403f4ef2975cd7c50761ff.tar.gz mpd-04ba40981f559a1847403f4ef2975cd7c50761ff.tar.xz mpd-04ba40981f559a1847403f4ef2975cd7c50761ff.zip | |
pcm/PcmMix: use the SampleTraits library
Diffstat (limited to 'src/pcm/PcmMix.cxx')
| -rw-r--r-- | src/pcm/PcmMix.cxx | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/src/pcm/PcmMix.cxx b/src/pcm/PcmMix.cxx index 21080bc5f..d7183f01d 100644 --- a/src/pcm/PcmMix.cxx +++ b/src/pcm/PcmMix.cxx @@ -22,40 +22,48 @@ #include "PcmVolume.hxx" #include "PcmUtils.hxx" #include "AudioFormat.hxx" +#include "Traits.hxx" #include <assert.h> #include <math.h> -template<typename T, typename U, unsigned bits> -static T -PcmAddVolume(T _a, T _b, int volume1, int volume2) +template<SampleFormat F, class Traits=SampleTraits<F>> +static typename Traits::value_type +PcmAddVolume(typename Traits::value_type _a, typename Traits::value_type _b, + int volume1, int volume2) { - U a(_a), b(_b); + typename Traits::long_type a(_a), b(_b); - U c = ((a * volume1 + b * volume2) + + typename Traits::value_type c = ((a * volume1 + b * volume2) + pcm_volume_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; - return PcmClamp<T, U, bits>(c); + return PcmClamp<typename Traits::value_type, + typename Traits::long_type, + Traits::BITS>(c); } -template<typename T, typename U, unsigned bits> +template<SampleFormat F, class Traits=SampleTraits<F>> static void -PcmAddVolume(T *a, const T *b, unsigned n, int volume1, int volume2) +PcmAddVolume(typename Traits::pointer_type a, + typename Traits::const_pointer_type b, + size_t n, int volume1, int volume2) { for (size_t i = 0; i != n; ++i) - a[i] = PcmAddVolume<T, U, bits>(a[i], b[i], volume1, volume2); + a[i] = PcmAddVolume<F, Traits>(a[i], b[i], volume1, volume2); } -template<typename T, typename U, unsigned bits> +template<SampleFormat F, class Traits=SampleTraits<F>> static void PcmAddVolumeVoid(void *a, const void *b, size_t size, int volume1, int volume2) { - constexpr size_t sample_size = sizeof(T); + constexpr size_t sample_size = Traits::SAMPLE_SIZE; assert(size % sample_size == 0); - PcmAddVolume<T, U, bits>((T *)a, (const T *)b, size / sample_size, - volume1, volume2); + PcmAddVolume<F, Traits>(typename Traits::pointer_type(a), + typename Traits::const_pointer_type(b), + size / sample_size, + volume1, volume2); } static void @@ -84,23 +92,23 @@ pcm_add_vol(void *buffer1, const void *buffer2, size_t size, return false; case SampleFormat::S8: - PcmAddVolumeVoid<int8_t, int32_t, 8>(buffer1, buffer2, size, - vol1, vol2); + PcmAddVolumeVoid<SampleFormat::S8>(buffer1, buffer2, size, + vol1, vol2); return true; case SampleFormat::S16: - PcmAddVolumeVoid<int16_t, int32_t, 16>(buffer1, buffer2, size, - vol1, vol2); + PcmAddVolumeVoid<SampleFormat::S16>(buffer1, buffer2, size, + vol1, vol2); return true; case SampleFormat::S24_P32: - PcmAddVolumeVoid<int32_t, int64_t, 24>(buffer1, buffer2, size, - vol1, vol2); + PcmAddVolumeVoid<SampleFormat::S24_P32>(buffer1, buffer2, size, + vol1, vol2); return true; case SampleFormat::S32: - PcmAddVolumeVoid<int32_t, int64_t, 32>(buffer1, buffer2, size, - vol1, vol2); + PcmAddVolumeVoid<SampleFormat::S32>(buffer1, buffer2, size, + vol1, vol2); return true; case SampleFormat::FLOAT: |