mirror of https://github.com/AxioDL/boo.git
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
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#include "boo/audiodev/AudioMatrix.hpp"
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#include <string.h>
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namespace boo
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{
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void AudioMatrixMono::setDefaultMatrixCoefficients()
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{
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memset(m_coefs, 0, sizeof(m_coefs));
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switch (m_setOut)
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{
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case AudioChannelSet::Mono:
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case AudioChannelSet::Stereo:
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case AudioChannelSet::Quad:
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m_coefs[AudioChannel::FrontLeft] = 1.0;
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m_coefs[AudioChannel::FrontRight] = 1.0;
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break;
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case AudioChannelSet::Surround51:
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case AudioChannelSet::Surround71:
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m_coefs[AudioChannel::FrontCenter] = 1.0;
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break;
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}
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}
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void AudioMatrixMono::bufferMonoSampleData(IAudioVoice& voice, const int16_t* data, size_t samples)
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{
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const ChannelMap& chmap = voice.channelMap();
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m_interleaveBuf.clear();
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m_interleaveBuf.reserve(samples * chmap.m_channelCount);
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for (size_t s=0 ; s<samples ; ++s, ++data)
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for (int c=0 ; c<chmap.m_channelCount ; ++c)
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m_interleaveBuf.push_back(data[0] * m_coefs[chmap.m_channels[c]]);
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voice.bufferSampleData(m_interleaveBuf.data(), samples);
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}
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void AudioMatrixStereo::setDefaultMatrixCoefficients()
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{
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memset(m_coefs, 0, sizeof(m_coefs));
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switch (m_setOut)
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{
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case AudioChannelSet::Mono:
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m_coefs[AudioChannel::FrontLeft][0] = 0.5;
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m_coefs[AudioChannel::FrontLeft][1] = 0.5;
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m_coefs[AudioChannel::FrontRight][0] = 0.5;
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m_coefs[AudioChannel::FrontRight][1] = 0.5;
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break;
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case AudioChannelSet::Stereo:
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case AudioChannelSet::Quad:
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m_coefs[AudioChannel::FrontLeft][0] = 1.0;
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m_coefs[AudioChannel::FrontRight][1] = 1.0;
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break;
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case AudioChannelSet::Surround51:
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case AudioChannelSet::Surround71:
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m_coefs[AudioChannel::FrontLeft][0] = 1.0;
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m_coefs[AudioChannel::FrontRight][1] = 1.0;
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break;
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}
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}
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void AudioMatrixStereo::bufferStereoSampleData(IAudioVoice& voice, const int16_t* data, size_t frames)
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{
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const ChannelMap& chmap = voice.channelMap();
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m_interleaveBuf.clear();
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m_interleaveBuf.reserve(frames * chmap.m_channelCount);
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for (size_t f=0 ; f<frames ; ++f, data += 2)
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for (int c=0 ; c<chmap.m_channelCount ; ++c)
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m_interleaveBuf.push_back(data[0] * m_coefs[chmap.m_channels[c][0]] +
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data[1] * m_coefs[chmap.m_channels[c][1]]);
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voice.bufferSampleData(m_interleaveBuf.data(), frames);
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}
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}
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