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Add the multiplyAdd methods for AudioSpan

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This commit is contained in:
Jean Pierre Cimalando 2020-03-02 14:07:06 +01:00
parent 236906fec4
commit 259e201fac
1 changed files with 38 additions and 0 deletions
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38
src/sfizz/AudioSpan.h
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@ -11,6 +11,7 @@
#include "Debug.h"
#include "LeakDetector.h"
#include "SIMDHelpers.h"
#include "absl/types/span.h"
#include <array>
#include <initializer_list>
#include <type_traits>
@ -306,6 +307,43 @@ public:
}
}
/**
* @brief Add another AudioSpan with a compatible number of channels to the current
* AudioSpan, applying an elementwise gain to the operand.
*
* @param other the other AudioSpan
* @param gain the gain to apply
*/
template <class U, size_t N, typename = std::enable_if<N <= MaxChannels>>
void multiplyAdd(AudioSpan<U, N>& other, absl::Span<const Type> gain)
{
static_assert(!std::is_const<Type>::value, "Can't allow mutating operations on const AudioSpans");
ASSERT(other.getNumChannels() == numChannels);
ASSERT(gain.size() == numFrames);
if (other.getNumChannels() == numChannels) {
for (size_t i = 0; i < numChannels; ++i)
sfz::multiplyAdd(gain, other.getConstSpan(i), getSpan(i));
}
}
/**
* @brief Add another AudioSpan with a compatible number of channels to the current
* AudioSpan, applying a fixed gain to the operand.
*
* @param other the other AudioSpan
* @param gain the gain to apply
*/
template <class U, size_t N, typename = std::enable_if<N <= MaxChannels>>
void multiplyAdd(AudioSpan<U, N>& other, const Type gain)
{
static_assert(!std::is_const<Type>::value, "Can't allow mutating operations on const AudioSpans");
ASSERT(other.getNumChannels() == numChannels);
if (other.getNumChannels() == numChannels) {
for (size_t i = 0; i < numChannels; ++i)
sfz::multiplyAdd(gain, other.getConstSpan(i), getSpan(i));
}
}
/**
* @brief Copy the elements of another AudioSpan with a compatible number of channels
* to the current AudioSpan.