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pcm/Traits: add "SILENCE" attribute

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This commit is contained in:
Max Kellermann
2017-01-19 11:57:01 +01:00
parent 7a098ca0ed
commit df9a665994
2 changed files with 13 additions and 1 deletions
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11
src/pcm/Traits.hxx
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@@ -85,6 +85,11 @@ struct SampleTraits<SampleFormat::S8> {
* The maximum sample value.
*/
static constexpr value_type MAX = (sum_type(1) << (BITS - 1)) - 1;
/**
* A value which represents "silence".
*/
static constexpr value_type SILENCE = 0;
};
template<>
@@ -101,6 +106,7 @@ struct SampleTraits<SampleFormat::S16> {
static constexpr value_type MIN = -(sum_type(1) << (BITS - 1));
static constexpr value_type MAX = (sum_type(1) << (BITS - 1)) - 1;
static constexpr value_type SILENCE = 0;
};
template<>
@@ -117,6 +123,7 @@ struct SampleTraits<SampleFormat::S32> {
static constexpr value_type MIN = -(sum_type(1) << (BITS - 1));
static constexpr value_type MAX = (sum_type(1) << (BITS - 1)) - 1;
static constexpr value_type SILENCE = 0;
};
template<>
@@ -133,6 +140,7 @@ struct SampleTraits<SampleFormat::S24_P32> {
static constexpr value_type MIN = -(sum_type(1) << (BITS - 1));
static constexpr value_type MAX = (sum_type(1) << (BITS - 1)) - 1;
static constexpr value_type SILENCE = 0;
};
template<>
@@ -148,6 +156,7 @@ struct SampleTraits<SampleFormat::FLOAT> {
static constexpr value_type MIN = -1;
static constexpr value_type MAX = 1;
static constexpr value_type SILENCE = 0;
};
template<>
@@ -157,6 +166,8 @@ struct SampleTraits<SampleFormat::DSD> {
typedef const value_type *const_pointer_type;
static constexpr size_t SAMPLE_SIZE = sizeof(value_type);
static constexpr value_type SILENCE = 0x69;
};
#endif