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@@ -59,9 +59,9 @@ const int KRENGINE_AUDIO_BLOCK_LOG2N = 7; // 2 ^ KRENGINE_AUDIO_BLOCK_LOG2N =
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// 7 is 128 .. NOTE: the hrtf code uses magic numbers everywhere and is hardcoded to 128 samples per frame
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const int KRENGINE_AUDIO_BLOCK_LENGTH = 1 << KRENGINE_AUDIO_BLOCK_LOG2N;
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// Length of one block to process. Determines the latency of the audio system and sets size for FFT's used in HRTF convolution
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// the AUGraph works in 1024 sample chunks. At 128 we are making 8 consecutive calls to the renderBlock method for each
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// render initiated by the AUGraph.
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// Length of one block to process. Determines the latency of the audio system and sets size for FFT's used in HRTF convolution
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// the AUGraph works in 1024 sample chunks. At 128 we are making 8 consecutive calls to the renderBlock method for each
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// render initiated by the AUGraph.
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const int KRENGINE_REVERB_MAX_FFT_LOG2 = 15;
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const int KRENGINE_REVERB_WORKSPACE_SIZE = 1 << KRENGINE_REVERB_MAX_FFT_LOG2;
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@@ -79,177 +79,180 @@ const int KRENGINE_AUDIO_ANTICLICK_SAMPLES = 64;
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class KRAmbientZone;
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class KRReverbZone;
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typedef struct {
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float weight;
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KRAmbientZone *ambient_zone;
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KRAudioSample *ambient_sample;
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typedef struct
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{
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float weight;
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KRAmbientZone* ambient_zone;
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KRAudioSample* ambient_sample;
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} siren_ambient_zone_weight_info;
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typedef struct {
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float weight;
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KRReverbZone *reverb_zone;
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KRAudioSample *reverb_sample;
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typedef struct
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{
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float weight;
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KRReverbZone* reverb_zone;
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KRAudioSample* reverb_sample;
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} siren_reverb_zone_weight_info;
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class KRAudioManager : public KRResourceManager {
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class KRAudioManager : public KRResourceManager
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{
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public:
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KRAudioManager(KRContext &context);
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virtual ~KRAudioManager();
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void destroy();
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KRAudioManager(KRContext& context);
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virtual ~KRAudioManager();
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void destroy();
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virtual KRResource* loadResource(const std::string& name, const std::string& extension, KRDataBlock* data) override;
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virtual KRResource* getResource(const std::string& name, const std::string& extension) override;
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unordered_map<std::string, KRAudioSample *> &getSounds();
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void add(KRAudioSample *Sound);
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KRAudioSample *load(const std::string &name, const std::string &extension, KRDataBlock *data);
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KRAudioSample *get(const std::string &name);
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// Listener position and orientation
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KRScene *getListenerScene();
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void setListenerScene(KRScene *scene);
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void setListenerOrientation(const Vector3 &position, const Vector3 &forward, const Vector3 &up);
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void setListenerOrientationFromModelMatrix(const Matrix4 &modelMatrix);
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Vector3 &getListenerForward();
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Vector3 &getListenerPosition();
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Vector3 &getListenerUp();
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// Global audio gain / attenuation
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float getGlobalGain();
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void setGlobalGain(float gain);
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float getGlobalReverbSendLevel();
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void setGlobalReverbSendLevel(float send_level);
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float getGlobalAmbientGain();
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void setGlobalAmbientGain(float gain);
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virtual KRResource* loadResource(const std::string& name, const std::string& extension, KRDataBlock* data) override;
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virtual KRResource* getResource(const std::string& name, const std::string& extension) override;
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void makeCurrentContext();
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KRDataBlock *getBufferData(int size);
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void recycleBufferData(KRDataBlock *data);
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void activateAudioSource(KRAudioSource *audioSource);
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void deactivateAudioSource(KRAudioSource *audioSource);
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__int64_t getAudioFrame();
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KRAudioBuffer *getBuffer(KRAudioSample &audio_sample, int buffer_index);
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static void mute(bool onNotOff);
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void goToSleep();
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unordered_map<std::string, KRAudioSample*>& getSounds();
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void add(KRAudioSample* Sound);
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KRAudioSample* load(const std::string& name, const std::string& extension, KRDataBlock* data);
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KRAudioSample* get(const std::string& name);
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// Listener position and orientation
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KRScene* getListenerScene();
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void setListenerScene(KRScene* scene);
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void setListenerOrientation(const Vector3& position, const Vector3& forward, const Vector3& up);
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void setListenerOrientationFromModelMatrix(const Matrix4& modelMatrix);
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Vector3& getListenerForward();
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Vector3& getListenerPosition();
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Vector3& getListenerUp();
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// Global audio gain / attenuation
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float getGlobalGain();
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void setGlobalGain(float gain);
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float getGlobalReverbSendLevel();
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void setGlobalReverbSendLevel(float send_level);
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float getGlobalAmbientGain();
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void setGlobalAmbientGain(float gain);
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void makeCurrentContext();
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KRDataBlock* getBufferData(int size);
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void recycleBufferData(KRDataBlock* data);
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void activateAudioSource(KRAudioSource* audioSource);
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void deactivateAudioSource(KRAudioSource* audioSource);
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__int64_t getAudioFrame();
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KRAudioBuffer* getBuffer(KRAudioSample& audio_sample, int buffer_index);
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static void mute(bool onNotOff);
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void goToSleep();
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void startFrame(float deltaTime);
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bool getEnableAudio();
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void setEnableAudio(bool enable);
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bool getEnableHRTF();
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void setEnableHRTF(bool enable);
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bool getEnableReverb();
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void setEnableReverb(bool enable);
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float getReverbMaxLength();
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void setReverbMaxLength(float max_length);
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void _registerOpenAudioSample(KRAudioSample* audioSample);
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void _registerCloseAudioSample(KRAudioSample* audioSample);
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void startFrame(float deltaTime);
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bool getEnableAudio();
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void setEnableAudio(bool enable);
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bool getEnableHRTF();
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void setEnableHRTF(bool enable);
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bool getEnableReverb();
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void setEnableReverb(bool enable);
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float getReverbMaxLength();
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void setReverbMaxLength(float max_length);
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void _registerOpenAudioSample(KRAudioSample *audioSample);
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void _registerCloseAudioSample(KRAudioSample *audioSample);
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private:
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bool m_enable_audio;
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bool m_enable_hrtf;
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bool m_enable_reverb;
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float m_reverb_max_length;
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KRScene *m_listener_scene; // For now, only one scene is allowed to have active audio at once
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float m_global_reverb_send_level;
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float m_global_ambient_gain;
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float m_global_gain;
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Vector3 m_listener_position;
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Vector3 m_listener_forward;
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Vector3 m_listener_up;
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unordered_map<std::string, KRAudioSample *> m_sounds;
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std::vector<KRDataBlock *> m_bufferPoolIdle;
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std::vector<KRAudioBuffer *> m_bufferCache;
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std::set<KRAudioSource *> m_activeAudioSources;
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std::set<KRAudioSample *> m_openAudioSamples;
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void initAudio();
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void initHRTF();
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void cleanupAudio();
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bool m_initialized;
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bool m_enable_audio;
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bool m_enable_hrtf;
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bool m_enable_reverb;
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float m_reverb_max_length;
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KRScene* m_listener_scene; // For now, only one scene is allowed to have active audio at once
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float m_global_reverb_send_level;
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float m_global_ambient_gain;
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float m_global_gain;
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Vector3 m_listener_position;
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Vector3 m_listener_forward;
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Vector3 m_listener_up;
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unordered_map<std::string, KRAudioSample*> m_sounds;
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std::vector<KRDataBlock*> m_bufferPoolIdle;
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std::vector<KRAudioBuffer*> m_bufferCache;
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std::set<KRAudioSource*> m_activeAudioSources;
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std::set<KRAudioSample*> m_openAudioSamples;
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void initAudio();
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void initHRTF();
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void cleanupAudio();
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bool m_initialized;
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#ifdef __APPLE__
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// Apple Core Audio
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AUGraph m_auGraph;
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AudioUnit m_auMixer;
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// Apple Core Audio
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AUGraph m_auGraph;
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AudioUnit m_auMixer;
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static OSStatus renderInput(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData);
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void renderAudio(UInt32 inNumberFrames, AudioBufferList *ioData);
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static OSStatus renderInput(void* inRefCon, AudioUnitRenderActionFlags* ioActionFlags, const AudioTimeStamp* inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList* ioData);
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void renderAudio(UInt32 inNumberFrames, AudioBufferList* ioData);
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#endif
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KRDSP::FFTWorkspace m_fft_setup[KRENGINE_REVERB_MAX_FFT_LOG2 - KRENGINE_AUDIO_BLOCK_LOG2N + 1];
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KRDSP::FFTWorkspace m_fft_setup[KRENGINE_REVERB_MAX_FFT_LOG2 - KRENGINE_AUDIO_BLOCK_LOG2N + 1];
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__int64_t m_audio_frame; // Number of audio frames processed since the start of the application
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float *m_reverb_input_samples; // Circular-buffered reverb input, single channel
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int m_reverb_input_next_sample; // Pointer to next sample in reverb buffer
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int m_reverb_sequence;
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KRAudioSample *m_reverb_impulse_responses[KRENGINE_MAX_REVERB_IMPULSE_MIX];
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float m_reverb_impulse_responses_weight[KRENGINE_MAX_REVERB_IMPULSE_MIX];
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float *m_output_accumulation; // Interleaved output accumulation buffer
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int m_output_accumulation_block_start;
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int m_output_sample;
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float *m_workspace_data;
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KRDSP::SplitComplex m_workspace[3];
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float *getBlockAddress(int block_offset);
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void renderBlock();
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void renderReverb();
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void renderAmbient();
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void renderHRTF();
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void renderITD();
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void renderReverbImpulseResponse(int impulse_response_offset, int frame_count_log2);
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void renderLimiter();
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std::vector<Vector2> m_hrtf_sample_locations;
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float *m_hrtf_data;
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unordered_map<Vector2, KRDSP::SplitComplex> m_hrtf_spectral[2];
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Vector2 getNearestHRTFSample(const Vector2 &dir);
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void getHRTFMix(const Vector2 &dir, Vector2 &hrtf1, Vector2 &hrtf2, Vector2 &hrtf3, Vector2 &hrtf4, float &mix1, float &mix2, float &mix3, float &mix4);
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KRAudioSample *getHRTFSample(const Vector2 &hrtf_dir);
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KRDSP::SplitComplex getHRTFSpectral(const Vector2 &hrtf_dir, const int channel);
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unordered_map<std::string, siren_ambient_zone_weight_info> m_ambient_zone_weights;
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float m_ambient_zone_total_weight = 0.0f; // For normalizing zone weights
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unordered_map<std::string, siren_reverb_zone_weight_info> m_reverb_zone_weights;
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float m_reverb_zone_total_weight = 0.0f; // For normalizing zone weights
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std::mutex m_mutex;
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__int64_t m_audio_frame; // Number of audio frames processed since the start of the application
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float* m_reverb_input_samples; // Circular-buffered reverb input, single channel
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int m_reverb_input_next_sample; // Pointer to next sample in reverb buffer
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int m_reverb_sequence;
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KRAudioSample* m_reverb_impulse_responses[KRENGINE_MAX_REVERB_IMPULSE_MIX];
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float m_reverb_impulse_responses_weight[KRENGINE_MAX_REVERB_IMPULSE_MIX];
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float* m_output_accumulation; // Interleaved output accumulation buffer
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int m_output_accumulation_block_start;
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int m_output_sample;
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float* m_workspace_data;
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KRDSP::SplitComplex m_workspace[3];
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float* getBlockAddress(int block_offset);
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void renderBlock();
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void renderReverb();
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void renderAmbient();
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void renderHRTF();
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void renderITD();
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void renderReverbImpulseResponse(int impulse_response_offset, int frame_count_log2);
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void renderLimiter();
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std::vector<Vector2> m_hrtf_sample_locations;
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float* m_hrtf_data;
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unordered_map<Vector2, KRDSP::SplitComplex> m_hrtf_spectral[2];
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Vector2 getNearestHRTFSample(const Vector2& dir);
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void getHRTFMix(const Vector2& dir, Vector2& hrtf1, Vector2& hrtf2, Vector2& hrtf3, Vector2& hrtf4, float& mix1, float& mix2, float& mix3, float& mix4);
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KRAudioSample* getHRTFSample(const Vector2& hrtf_dir);
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KRDSP::SplitComplex getHRTFSpectral(const Vector2& hrtf_dir, const int channel);
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unordered_map<std::string, siren_ambient_zone_weight_info> m_ambient_zone_weights;
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float m_ambient_zone_total_weight = 0.0f; // For normalizing zone weights
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unordered_map<std::string, siren_reverb_zone_weight_info> m_reverb_zone_weights;
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float m_reverb_zone_total_weight = 0.0f; // For normalizing zone weights
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std::mutex m_mutex;
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#ifdef __APPLE__
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mach_timebase_info_data_t m_timebase_info;
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mach_timebase_info_data_t m_timebase_info;
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#endif
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unordered_multimap<Vector2, std::pair<KRAudioSource *, std::pair<float, float> > > m_mapped_sources, m_prev_mapped_sources;
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bool m_anticlick_block;
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bool m_high_quality_hrtf; // If true, 4 HRTF samples will be interpolated; if false, the nearest HRTF sample will be used without interpolation
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unordered_multimap<Vector2, std::pair<KRAudioSource*, std::pair<float, float> > > m_mapped_sources, m_prev_mapped_sources;
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bool m_anticlick_block;
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bool m_high_quality_hrtf; // If true, 4 HRTF samples will be interpolated; if false, the nearest HRTF sample will be used without interpolation
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};
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