ALAudioDeviceCaps.hpp

/******************************************************************************
 
  nomlib - C++11 cross-platform game engine
 
Copyright (c) 2013, 2014, 2015, 2016 Jeffrey Carpenter <i8degrees@gmail.com>
All rights reserved.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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******************************************************************************/
#ifndef NOMLIB_AUDIO_AL_DEVICE_CAPS_HPP
#define NOMLIB_AUDIO_AL_DEVICE_CAPS_HPP
 
#include "nomlib/config.hpp"
#include "nomlib/math/Point3.hpp"
#include "nomlib/audio/IOAudioEngine.hpp"
 
// FIXME(jeff): enums
#include "nomlib/audio/AL/SoundSource.hpp"
 
// Forward declarations
struct ALCdevice_struct;
struct ALCcontext_struct;
 
namespace nom {
namespace audio {
 
// Forward declarations
struct SoundBuffer;
// struct AudioSpec;
struct ALAudioDevice;
 
// Function declarations
 
void free_buffer(uint32 buffer_id);
void free_source(uint32 buffer_id);
 
uint32 buffer_id(const SoundBuffer* target);
uint32 source_id(const SoundBuffer* target);

uint32 next_buffer_id();

uint32* next_buffer_id(uint32 num_buffers);

uint32 next_source_id();

uint32* next_source_id(uint32 num_sources);
 
// TODO(jeff): Add const to getters!
class ALAudioEngine: public IOAudioEngine
{
  public:
    ALAudioEngine();
    virtual ~ALAudioEngine();
 
    ALAudioEngine(ALAudioDevice* driver);
    virtual void init(void* driver) override;
 
    virtual bool valid() const override;
 
    virtual uint32 caps() const override;
    virtual void set_cap(uint32 format) override;
 
    virtual bool connected() const override;

    virtual
    uint32 channel_format(uint32 num_channels, uint32 channel_format) override;
 
    virtual bool valid_buffer(SoundBuffer* target) override;
    virtual bool valid_source(SoundBuffer* target) override;
 
    virtual uint32 state(SoundBuffer* target) override;
    virtual real32 pitch(SoundBuffer* target) override;
 
    virtual real32 volume() const override;
    virtual Point3f position() const override;
 
    virtual real32 volume(SoundBuffer* target) const override;
    virtual real32 min_volume(SoundBuffer* target) override;
    virtual real32 max_volume(SoundBuffer* target) override;
 
    virtual Point3f velocity(SoundBuffer* target) override;
    virtual Point3f position(SoundBuffer* target) override;
    virtual real32 playback_position(SoundBuffer* target) override;
    virtual real32 playback_samples(SoundBuffer* target) override;
 
    // virtual void set_state(SoundBuffer* target, uint32 state) override;
 
    virtual void set_volume(real32 gain) override;
    virtual void set_position(const Point3f& p) override;
 
    virtual void set_min_volume(SoundBuffer* target, real32 gain) override;
    virtual void set_max_volume(SoundBuffer* target, real32 gain) override;
    virtual void set_volume(SoundBuffer* target, real32 gain) override;
 
    virtual void set_velocity(SoundBuffer* target, const Point3f& v) override;
    virtual void set_position(SoundBuffer* target, const Point3f& p) override;
    virtual void set_pitch(SoundBuffer* target, real32 pitch) override;
    virtual void set_playback_position(SoundBuffer* target, real32 offset_seconds) override;
    virtual void play(SoundBuffer* target) override;
    virtual void stop(SoundBuffer* target) override;
    virtual void pause(SoundBuffer* target) override;
    virtual void resume(SoundBuffer* target) override;
 
    virtual bool push_buffer(SoundBuffer* target) override;
    virtual bool queue_buffer(SoundBuffer* target) override;
 
    // IMPORTANT(jeff): The audio hardware capabilities, maximum sources,
    // limitations and so on are subject to change anytime that we touch the
    // audio context state!
    virtual void suspend() override;
    virtual void resume() override;
    virtual void close() override;
 
    virtual void free_buffer(SoundBuffer* target) override;
 
  private:
    bool fill_buffer(SoundBuffer* target);
 
    virtual void close_context();
    virtual void close_device();
 
    ALAudioDevice* impl_ = nullptr;
};
 
} // namespace audio
} // namespace nom
 
#endif // include guard defined