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| author | Max Kellermann <max@duempel.org> | 2013-12-02 09:09:19 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2013-12-02 11:21:32 +0100 |
| commit | 3a0f3eaa50c748e2a8e42f15beb4bf447fa1a87c (patch) | |
| tree | 983d9a7a91a83ef81b0d67c9b98148524def796f /src/pcm | |
| parent | 80eb8d9e26007fb961d2bb7a41e5e3e5bf9360f1 (diff) | |
| download | mpd-3a0f3eaa50c748e2a8e42f15beb4bf447fa1a87c.tar.gz mpd-3a0f3eaa50c748e2a8e42f15beb4bf447fa1a87c.tar.xz mpd-3a0f3eaa50c748e2a8e42f15beb4bf447fa1a87c.zip | |
pcm/PcmUtils: use the SampleTraits library
Diffstat (limited to 'src/pcm')
| -rw-r--r-- | src/pcm/PcmFormat.cxx | 4 | ||||
| -rw-r--r-- | src/pcm/PcmMix.cxx | 8 | ||||
| -rw-r--r-- | src/pcm/PcmUtils.hxx | 15 | ||||
| -rw-r--r-- | src/pcm/PcmVolume.cxx | 4 |
4 files changed, 14 insertions, 17 deletions
diff --git a/src/pcm/PcmFormat.cxx b/src/pcm/PcmFormat.cxx index 06390249d..a0e0bb2de 100644 --- a/src/pcm/PcmFormat.cxx +++ b/src/pcm/PcmFormat.cxx @@ -57,9 +57,7 @@ ConvertFromFloat(typename Traits::pointer_type dest, while (src != end) { typename Traits::long_type sample(*src++ * factor); - *dest++ = PcmClamp<typename Traits::value_type, - typename Traits::long_type, - Traits::BITS>(sample); + *dest++ = PcmClamp<F, Traits>(sample); } } diff --git a/src/pcm/PcmMix.cxx b/src/pcm/PcmMix.cxx index d0c20d301..6a1c40db9 100644 --- a/src/pcm/PcmMix.cxx +++ b/src/pcm/PcmMix.cxx @@ -38,9 +38,7 @@ PcmAddVolume(typename Traits::value_type _a, typename Traits::value_type _b, pcm_volume_dither() + PCM_VOLUME_1 / 2) / PCM_VOLUME_1; - return PcmClamp<typename Traits::value_type, - typename Traits::long_type, - Traits::BITS>(c); + return PcmClamp<F, Traits>(c); } template<SampleFormat F, class Traits=SampleTraits<F>> @@ -129,9 +127,7 @@ PcmAdd(typename Traits::value_type _a, typename Traits::value_type _b) { typename Traits::long_type a(_a), b(_b); - return PcmClamp<typename Traits::value_type, - typename Traits::long_type, - Traits::BITS>(a + b); + return PcmClamp<F, Traits>(a + b); } template<SampleFormat F, class Traits=SampleTraits<F>> diff --git a/src/pcm/PcmUtils.hxx b/src/pcm/PcmUtils.hxx index 108ba85ae..06b3acb4d 100644 --- a/src/pcm/PcmUtils.hxx +++ b/src/pcm/PcmUtils.hxx @@ -26,6 +26,9 @@ #include <stdint.h> +enum class SampleFormat : uint8_t; +template<SampleFormat F> struct SampleTraits; + /** * Add a byte count to the specified pointer. This is a utility * function to convert a source pointer and a byte count to an "end" @@ -42,13 +45,15 @@ pcm_end_pointer(const T *p, size_t size) * Check if the value is within the range of the provided bit size, * and caps it if necessary. */ -template<typename T, typename U, unsigned bits> +template<SampleFormat F, class Traits=SampleTraits<F>> gcc_const -static inline T -PcmClamp(U x) +static inline typename Traits::value_type +PcmClamp(typename Traits::long_type x) { - constexpr U MIN_VALUE = -(U(1) << (bits - 1)); - constexpr U MAX_VALUE = (U(1) << (bits - 1)) - 1; + typedef typename Traits::value_type T; + typedef typename Traits::long_type U; + constexpr U MIN_VALUE = -(U(1) << (Traits::BITS - 1)); + constexpr U MAX_VALUE = (U(1) << (Traits::BITS - 1)) - 1; typedef std::numeric_limits<T> limits; static_assert(MIN_VALUE >= limits::min(), "out of range"); diff --git a/src/pcm/PcmVolume.cxx b/src/pcm/PcmVolume.cxx index fafec2d60..8426fd57b 100644 --- a/src/pcm/PcmVolume.cxx +++ b/src/pcm/PcmVolume.cxx @@ -39,9 +39,7 @@ pcm_volume_change(typename Traits::pointer_type buffer, PCM_VOLUME_1 / 2) / PCM_VOLUME_1; - *buffer++ = PcmClamp<typename Traits::value_type, - typename Traits::long_type, - Traits::BITS>(sample); + *buffer++ = PcmClamp<F, Traits>(sample); } } |