151 lines
5.2 KiB
C++
151 lines
5.2 KiB
C++
//
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// FileManager.h
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// KREngine
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//
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// Copyright 2012 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#ifndef KRAUDIO_MANAGER_H
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#define KRAUDIO_MANAGER_H
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#include "KREngine-common.h"
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#include "KRAudioSample.h"
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#include "KRContextObject.h"
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#include "KRDataBlock.h"
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#include "KRMat4.h"
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#include "KRAudioSource.h"
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const int KRENGINE_AUDIO_MAX_POOL_SIZE = 32;
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const int KRENGINE_AUDIO_MAX_BUFFER_SIZE = 64*1024;
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const int KRENGINE_AUDIO_BUFFERS_PER_SOURCE = 3;
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const int KRENGINE_FILTER_LENGTH = 128; // Size for FFT's used in HRTF convolution
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const int KRENGINE_FILTER_LOG2 = 7; // 2 ^ 7 = 128
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const int KRENGINE_REVERB_MAX_SAMPLES = 435200; // At least 10s reverb impulse response length, divisible by KRENGINE_REVERB_FILTER_LENGTH
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const int KRENGINE_MAX_REVERB_IMPULSE_MIX = 16; // Maximum number of impulse response filters that can be mixed simultaneously
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const int KRENGINE_MAX_OUTPUT_CHANNELS = 2;
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class KRAudioManager : public KRContextObject {
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public:
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KRAudioManager(KRContext &context);
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virtual ~KRAudioManager();
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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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void setViewMatrix(const KRMat4 &viewMatrix);
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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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enum audio_engine_t {
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KRAKEN_AUDIO_NONE,
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KRAKEN_AUDIO_OPENAL,
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KRAKEN_AUDIO_SIREN
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};
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audio_engine_t getAudioEngine();
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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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float getGlobalReverbSendLevel();
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void setGlobalReverbSendLevel(float send_level);
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private:
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float m_global_reverb_send_level;
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KRVector3 m_listener_position;
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KRVector3 m_listener_forward;
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KRVector3 m_listener_up;
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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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void initAudio();
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void initOpenAL();
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void initSiren();
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void cleanupAudio();
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void cleanupOpenAL();
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void cleanupSiren();
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audio_engine_t m_audio_engine;
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// OpenAL Handles
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ALCcontext* m_alContext;
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ALCdevice* m_alDevice;
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// Siren Handles
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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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__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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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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FFTSetup m_fft_setup;
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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 renderHRTF();
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void renderITD();
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void renderReverbImpulseResponse(KRAudioSample *impulse_response, int impulse_response_block);
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};
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#endif /* defined(KRAUDIO_MANAGER_H) */
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