75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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#ifndef SOUNDENGINE_H
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#define SOUNDENGINE_H
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#include <cassert>
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#include <vector>
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#include <AL/al.h>
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#include <AL/alc.h>
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#include "Listener.h"
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#include "SoundSource.h"
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#include "SoundResource.h"
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#include "ThreadPool.h"
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#include "Util.h"
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#define SOUNDENGINE_POSITION_SCALE 0.01f
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#define SOUNDENGINE_BUFFER_POOL_SIZE 128
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// Sound files larger than this will be streamed.
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#define SOUNDENGINE_STREAMING_SIZE_LIMIT (1 * 1024 * 1024)
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// Maximum number of buffers that can be queued at once for a streaming source.
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#define SOUNDENGINE_STREAMING_BUFFER_COUNT 3
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// How many samples, in seconds, each buffer will hold for streaming resources.
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#define SOUNDENGINE_STREAMING_BUFFER_SIZE 0.25
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class SoundEngine
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{
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public:
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static bool Init();
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static void Release();
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static void SetDopplerFactor(float dopplerFactor);
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// Used for the doppler effect, default value is 343.3 (Sound travels through air at ~343m/s)
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static void SetSpeedOfSound(float speed);
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static SoundSource *CreateSoundSource();
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static void DestroySoundSource(SoundSource *source);
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static void Update();
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private:
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// Allow SoundSources to get SoundResources.
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friend class SoundSource;
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// If the resource is not currently loaded, this function will block while reading the resource from disk.
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// These functions are thread safe.
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static SoundResource *GetSoundResource(const std::string &name);
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static void ReleaseSoundResource(SoundResource *resource);
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// Allow SoundResources to use the buffer pool.
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friend class SoundResourceWAV;
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// These functions are thread safe.
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static ALuint GetBuffer();
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static void ReleaseBuffer(ALuint buffer);
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private:
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static ALCdevice *m_device;
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static ALCcontext *m_context;
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static ThreadPool *m_threadPool;
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static ALuint m_bufferPool[SOUNDENGINE_BUFFER_POOL_SIZE];
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static size_t m_bufferPoolSize;
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static Mutex *m_bufferPoolMutex;
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static Mutex *m_resourceMutex;
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static std::vector<RefCounted<SoundResource *>> m_soundResources;
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static std::vector<SoundSource *> m_soundSources;
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static std::vector<SoundSource *> m_sourcesPendingDeletion;
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};
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#endif
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