136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
/*
|
|
* PluginMixBuffer.h
|
|
* -----------------
|
|
* Purpose: Helper class for managing plugin audio input and output buffers.
|
|
* Notes : (currently none)
|
|
* Authors: OpenMPT Devs
|
|
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
|
|
*/
|
|
|
|
|
|
#pragma once
|
|
|
|
#include "BuildSettings.h"
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
|
|
#include "../../common/mptAlloc.h"
|
|
|
|
|
|
OPENMPT_NAMESPACE_BEGIN
|
|
|
|
|
|
// At least this part of the code is ready for double-precision rendering... :>
|
|
// buffer_t: Sample buffer type (float, double, ...)
|
|
// bufferSize: Buffer size in samples
|
|
template<typename buffer_t, uint32 bufferSize>
|
|
class PluginMixBuffer
|
|
{
|
|
|
|
private:
|
|
|
|
#if defined(MPT_ENABLE_ALIGNED_ALLOC)
|
|
static constexpr std::align_val_t alignment = std::align_val_t{16};
|
|
static_assert(sizeof(mpt::aligned_array<buffer_t, bufferSize, alignment>) == sizeof(std::array<buffer_t, bufferSize>));
|
|
static_assert(alignof(mpt::aligned_array<buffer_t, bufferSize, alignment>) == static_cast<std::size_t>(alignment));
|
|
#endif
|
|
|
|
protected:
|
|
|
|
#if defined(MPT_ENABLE_ALIGNED_ALLOC)
|
|
std::vector<mpt::aligned_array<buffer_t, bufferSize, alignment>> inputs;
|
|
std::vector<mpt::aligned_array<buffer_t, bufferSize, alignment>> outputs;
|
|
#else
|
|
std::vector<std::array<buffer_t, bufferSize>> inputs;
|
|
std::vector<std::array<buffer_t, bufferSize>> outputs;
|
|
#endif
|
|
std::vector<buffer_t*> inputsarray;
|
|
std::vector<buffer_t*> outputsarray;
|
|
|
|
public:
|
|
|
|
// Allocate input and output buffers
|
|
bool Initialize(uint32 numInputs, uint32 numOutputs)
|
|
{
|
|
// Short cut - we do not need to recreate the buffers.
|
|
if(inputs.size() == numInputs && outputs.size() == numOutputs)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
try
|
|
{
|
|
inputs.resize(numInputs);
|
|
outputs.resize(numOutputs);
|
|
inputsarray.resize(numInputs);
|
|
outputsarray.resize(numOutputs);
|
|
} MPT_EXCEPTION_CATCH_OUT_OF_MEMORY(e)
|
|
{
|
|
MPT_EXCEPTION_DELETE_OUT_OF_MEMORY(e);
|
|
inputs.clear();
|
|
inputs.shrink_to_fit();
|
|
outputs.clear();
|
|
outputs.shrink_to_fit();
|
|
inputsarray.clear();
|
|
inputsarray.shrink_to_fit();
|
|
outputsarray.clear();
|
|
outputsarray.shrink_to_fit();
|
|
return false;
|
|
}
|
|
|
|
for(uint32 i = 0; i < numInputs; i++)
|
|
{
|
|
inputsarray[i] = inputs[i].data();
|
|
}
|
|
|
|
for(uint32 i = 0; i < numOutputs; i++)
|
|
{
|
|
outputsarray[i] = outputs[i].data();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Silence all input buffers.
|
|
void ClearInputBuffers(uint32 numSamples)
|
|
{
|
|
MPT_ASSERT(numSamples <= bufferSize);
|
|
for(size_t i = 0; i < inputs.size(); i++)
|
|
{
|
|
std::fill(inputs[i].data(), inputs[i].data() + numSamples, buffer_t{0});
|
|
}
|
|
}
|
|
|
|
// Silence all output buffers.
|
|
void ClearOutputBuffers(uint32 numSamples)
|
|
{
|
|
MPT_ASSERT(numSamples <= bufferSize);
|
|
for(size_t i = 0; i < outputs.size(); i++)
|
|
{
|
|
std::fill(outputs[i].data(), outputs[i].data() + numSamples, buffer_t{0});
|
|
}
|
|
}
|
|
|
|
PluginMixBuffer()
|
|
{
|
|
Initialize(2, 0);
|
|
}
|
|
|
|
// Return pointer to a given input or output buffer
|
|
const buffer_t *GetInputBuffer(uint32 index) const { return inputs[index].data(); }
|
|
const buffer_t *GetOutputBuffer(uint32 index) const { return outputs[index].data(); }
|
|
buffer_t *GetInputBuffer(uint32 index) { return inputs[index].data(); }
|
|
buffer_t *GetOutputBuffer(uint32 index) { return outputs[index].data(); }
|
|
|
|
// Return pointer array to all input or output buffers
|
|
buffer_t **GetInputBufferArray() { return inputs.empty() ? nullptr : inputsarray.data(); }
|
|
buffer_t **GetOutputBufferArray() { return outputs.empty() ? nullptr : outputsarray.data(); }
|
|
|
|
bool Ok() const { return (inputs.size() + outputs.size()) > 0; }
|
|
|
|
};
|
|
|
|
|
|
OPENMPT_NAMESPACE_END
|