mirror of https://github.com/AxioDL/boo.git
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
#ifndef BOO_AUDIOVOICEENGINE_HPP
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#define BOO_AUDIOVOICEENGINE_HPP
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#include "boo/audiodev/IAudioVoiceEngine.hpp"
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#include "AudioVoice.hpp"
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#include "AudioSubmix.hpp"
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#include <functional>
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namespace boo
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{
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/** Pertinent information from audio backend about optimal mixed-audio representation */
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struct AudioVoiceEngineMixInfo
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{
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double m_sampleRate;
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soxr_datatype_t m_sampleFormat;
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unsigned m_bitsPerSample;
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AudioChannelSet m_channels;
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ChannelMap m_channelMap;
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size_t m_periodFrames;
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};
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/** Base class for managing mixing and sample-rate-conversion amongst active voices */
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class BaseAudioVoiceEngine : public IAudioVoiceEngine
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{
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protected:
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friend class AudioVoice;
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friend class AudioSubmix;
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friend class AudioVoiceMono;
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friend class AudioVoiceStereo;
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float m_totalVol = 1.f;
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AudioVoiceEngineMixInfo m_mixInfo;
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std::list<AudioVoice*> m_activeVoices;
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std::list<AudioSubmix*> m_activeSubmixes;
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size_t m_5msFrames = 0;
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IAudioVoiceEngineCallback* m_engineCallback = nullptr;
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/* Shared scratch buffers for accumulating audio data for resampling */
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std::vector<int16_t> m_scratchIn;
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std::vector<int16_t> m_scratch16Pre;
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std::vector<int32_t> m_scratch32Pre;
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std::vector<float> m_scratchFltPre;
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std::vector<int16_t> m_scratch16Post;
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std::vector<int32_t> m_scratch32Post;
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std::vector<float> m_scratchFltPost;
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AudioSubmix m_mainSubmix;
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std::list<AudioSubmix*> m_linearizedSubmixes;
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bool m_submixesDirty = true;
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void _pumpAndMixVoices(size_t frames, int16_t* dataOut);
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void _pumpAndMixVoices(size_t frames, int32_t* dataOut);
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void _pumpAndMixVoices(size_t frames, float* dataOut);
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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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public:
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BaseAudioVoiceEngine() : m_mainSubmix(*this, nullptr, -1, false) {}
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~BaseAudioVoiceEngine();
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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(bool mainOut, IAudioSubmixCallback* cb, int busId);
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void setCallbackInterface(IAudioVoiceEngineCallback* cb);
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void setVolume(float vol);
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const AudioVoiceEngineMixInfo& mixInfo() const;
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AudioChannelSet getAvailableSet() {return m_mixInfo.m_channels;}
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void pumpAndMixVoices() {}
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size_t get5MsFrames() const {return m_5msFrames;}
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};
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}
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#endif // BOO_AUDIOVOICEENGINE_HPP
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