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Initial multiple-referencing submix refactor

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This commit is contained in:
Jack Andersen
2016-07-12 17:03:52 -10:00
parent 44e8317d49
commit 86003c4ac4
11 changed files with 477 additions and 341 deletions
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67
lib/audiodev/AudioSubmix.hpp
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@@ -2,9 +2,13 @@
#define BOO_AUDIOSUBMIX_HPP
#include "boo/audiodev/IAudioSubmix.hpp"
#include "IAudioMix.hpp"
#include <list>
#include <vector>
#include <unordered_map>
#if __SSE__
#include <xmmintrin.h>
#endif
struct AudioUnitVoiceEngine;
struct VSTVoiceEngine;
@@ -14,10 +18,14 @@ namespace boo
{
class BaseAudioVoiceEngine;
class AudioVoice;
struct AudioVoiceEngineMixInfo;
/* Output gains for each mix-send/channel */
class AudioSubmix : public IAudioSubmix, public IAudioMix
class AudioSubmix : public IAudioSubmix
{
friend class BaseAudioVoiceEngine;
friend class AudioVoiceMono;
friend class AudioVoiceStereo;
friend struct WASAPIAudioVoiceEngine;
friend struct ::AudioUnitVoiceEngine;
friend struct ::VSTVoiceEngine;
@@ -25,8 +33,8 @@ class AudioSubmix : public IAudioSubmix, public IAudioMix
/* Mixer-engine relationships */
BaseAudioVoiceEngine& m_root;
IAudioMix& m_parent;
std::list<AudioSubmix*>::iterator m_parentIt;
bool m_mainOut;
bool m_bound = false;
void bindSubmix(std::list<AudioSubmix*>::iterator pIt)
{
@@ -37,41 +45,52 @@ class AudioSubmix : public IAudioSubmix, public IAudioMix
/* Callback (effect source, optional) */
IAudioSubmixCallback* m_cb;
/* Audio sources */
std::list<AudioVoice*> m_activeVoices;
std::list<AudioSubmix*> m_activeSubmixes;
/* Slew state for output gains */
size_t m_slewFrames = 0;
size_t m_curSlewFrame = 0;
/* Output gains for each channel */
float m_gains[8];
/* Output gains for each mix-send/channel */
std::unordered_map<IAudioSubmix*, std::array<float, 2>> m_sendGains;
/* Temporary scratch buffers for accumulating submix audio */
std::vector<int16_t> m_scratch16;
std::vector<int32_t> m_scratch32;
std::vector<float> m_scratchFlt;
void _pumpAndMixVoices(size_t frames, int16_t* dataOut, int16_t* mainOut);
void _pumpAndMixVoices(size_t frames, int32_t* dataOut, int32_t* mainOut);
void _pumpAndMixVoices(size_t frames, float* dataOut, float* mainOut);
/* Override scratch buffers with alternate destination */
int16_t* m_redirect16 = nullptr;
int32_t* m_redirect32 = nullptr;
float* m_redirectFlt = nullptr;
void _unbindFrom(std::list<AudioVoice*>::iterator it);
void _unbindFrom(std::list<AudioSubmix*>::iterator it);
/* C3-linearization support (to mitigate a potential diamond problem on 'clever' submix routes) */
bool _isDirectDependencyOf(AudioSubmix* send);
std::list<AudioSubmix*> _linearizeC3();
static bool _mergeC3(std::list<AudioSubmix*>& output,
std::vector<std::list<AudioSubmix*>>& lists);
/* Fill scratch buffers with silence for new mix cycle */
void _zeroFill16();
void _zeroFill32();
void _zeroFillFlt();
/* Receive audio from a single voice / submix */
int16_t* _getMergeBuf16(size_t frames);
int32_t* _getMergeBuf32(size_t frames);
float* _getMergeBufFlt(size_t frames);
/* Mix scratch buffers into sends */
size_t _pumpAndMix16(size_t frames);
size_t _pumpAndMix32(size_t frames);
size_t _pumpAndMixFlt(size_t frames);
void _resetOutputSampleRate();
public:
~AudioSubmix();
AudioSubmix(BaseAudioVoiceEngine& root, IAudioMix& parent, IAudioSubmixCallback* cb);
AudioSubmix(BaseAudioVoiceEngine& root, IAudioSubmixCallback* cb, bool mainOut);
std::unique_ptr<IAudioVoice> allocateNewMonoVoice(double sampleRate,
IAudioVoiceCallback* cb,
bool dynamicPitch=false);
std::unique_ptr<IAudioVoice> allocateNewStereoVoice(double sampleRate,
IAudioVoiceCallback* cb,
bool dynamicPitch=false);
std::unique_ptr<IAudioSubmix> allocateNewSubmix(IAudioSubmixCallback* cb=nullptr);
void setChannelGains(const float gains[8]);
void resetSendLevels();
void setSendLevel(IAudioSubmix* submix, float level, bool slew);
void unbindSubmix();
const AudioVoiceEngineMixInfo& mixInfo() const;
double getSampleRate() const;