mirror of https://github.com/AxioDL/boo.git
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
#ifndef BOO_AUDIOSUBMIX_HPP
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#define BOO_AUDIOSUBMIX_HPP
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#include "boo/audiodev/IAudioSubmix.hpp"
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#include "IAudioMix.hpp"
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#include <list>
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#include <vector>
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struct AudioUnitVoiceEngine;
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struct VSTVoiceEngine;
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namespace boo
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{
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class BaseAudioVoiceEngine;
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class AudioVoice;
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class AudioSubmix : public IAudioSubmix, public IAudioMix
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{
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friend class BaseAudioVoiceEngine;
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friend struct WASAPIAudioVoiceEngine;
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friend struct ::AudioUnitVoiceEngine;
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friend struct ::VSTVoiceEngine;
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/* Mixer-engine relationships */
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BaseAudioVoiceEngine& m_root;
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IAudioMix& m_parent;
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std::list<AudioSubmix*>::iterator m_parentIt;
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bool m_bound = false;
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void bindSubmix(std::list<AudioSubmix*>::iterator pIt)
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{
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m_bound = true;
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m_parentIt = pIt;
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}
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/* Callback (effect source, optional) */
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IAudioSubmixCallback* m_cb;
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/* Audio sources */
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std::list<AudioVoice*> m_activeVoices;
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std::list<AudioSubmix*> m_activeSubmixes;
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/* Output gains for each channel */
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float m_gains[8];
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/* Temporary scratch buffers for accumulating submix audio */
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std::vector<int16_t> m_scratch16;
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std::vector<int32_t> m_scratch32;
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std::vector<float> m_scratchFlt;
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void _pumpAndMixVoices(size_t frames, int16_t* dataOut, int16_t* mainOut);
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void _pumpAndMixVoices(size_t frames, int32_t* dataOut, int32_t* mainOut);
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void _pumpAndMixVoices(size_t frames, float* dataOut, float* mainOut);
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void _unbindFrom(std::list<AudioVoice*>::iterator it);
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void _unbindFrom(std::list<AudioSubmix*>::iterator it);
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void _resetOutputSampleRate();
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public:
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~AudioSubmix();
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AudioSubmix(BaseAudioVoiceEngine& root, IAudioMix& parent, IAudioSubmixCallback* cb);
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std::unique_ptr<IAudioVoice> allocateNewMonoVoice(double sampleRate,
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IAudioVoiceCallback* cb,
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bool dynamicPitch=false);
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std::unique_ptr<IAudioVoice> allocateNewStereoVoice(double sampleRate,
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IAudioVoiceCallback* cb,
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bool dynamicPitch=false);
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std::unique_ptr<IAudioSubmix> allocateNewSubmix(IAudioSubmixCallback* cb=nullptr);
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void setChannelGains(const float gains[8]);
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void unbindSubmix();
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const AudioVoiceEngineMixInfo& mixInfo() const;
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double getSampleRate() const;
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SubmixFormat getSampleFormat() const;
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};
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}
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#endif // BOO_AUDIOSUBMIX_HPP
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