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			289 lines
		
	
	
	
		
			10 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			289 lines
		
	
	
	
		
			10 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*************************************************************************/
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| /*  audio_server.h                                                       */
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| /*************************************************************************/
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| /*                       This file is part of:                           */
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| /*                           GODOT ENGINE                                */
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| /*                    http://www.godotengine.org                         */
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| /*************************************************************************/
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| /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
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| /*                                                                       */
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| /* Permission is hereby granted, free of charge, to any person obtaining */
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| /* a copy of this software and associated documentation files (the       */
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| /* "Software"), to deal in the Software without restriction, including   */
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| /* without limitation the rights to use, copy, modify, merge, publish,   */
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| /* distribute, sublicense, and/or sell copies of the Software, and to    */
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| /* permit persons to whom the Software is furnished to do so, subject to */
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| /* the following conditions:                                             */
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| /*                                                                       */
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| /* The above copyright notice and this permission notice shall be        */
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| /* included in all copies or substantial portions of the Software.       */
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| /*                                                                       */
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| /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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| /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
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| /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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| /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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| /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
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| /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
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| /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
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| /*************************************************************************/
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| #ifndef AUDIO_SERVER_H
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| #define AUDIO_SERVER_H
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| 
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| #include "variant.h"
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| #include "object.h"
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| 
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| class AudioMixer {
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| protected:
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| 
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| 	void audio_mixer_chunk_call(int p_frames);
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| public:
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| 
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| 	enum {
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| 
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| 		INVALID_CHANNEL=0xFFFFFFFF
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| 	};
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| 
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| 	typedef uint32_t ChannelID;
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| 
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| 	/* CHANNEL API */
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| 
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| 	enum FilterType {
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| 		FILTER_NONE,
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| 		FILTER_LOWPASS,
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| 		FILTER_BANDPASS,
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| 		FILTER_HIPASS,
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| 		FILTER_NOTCH,
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| 		FILTER_PEAK,
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| 		FILTER_BANDLIMIT, ///< cutoff is LP resonace is HP
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| 		FILTER_LOW_SHELF,
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| 		FILTER_HIGH_SHELF
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| 
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| 	};
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| 
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| 	enum ReverbRoomType {
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| 
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| 		REVERB_SMALL,
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| 		REVERB_MEDIUM,
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| 		REVERB_LARGE,
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| 		REVERB_HALL
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| 	};
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| 
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| 	virtual ChannelID channel_alloc(RID p_sample)=0;
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| 
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| 	virtual void channel_set_volume(ChannelID p_channel, float p_gain)=0;
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| 	virtual void channel_set_pan(ChannelID p_channel, float p_pan, float p_depth=0,float height=0)=0; //pan and depth go from -1 to 1
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| 	virtual void channel_set_filter(ChannelID p_channel, FilterType p_type, float p_cutoff, float p_resonance, float p_gain=1.0)=0;
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| 	virtual void channel_set_chorus(ChannelID p_channel, float p_chorus )=0;
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| 	virtual void channel_set_reverb(ChannelID p_channel, ReverbRoomType p_room_type, float p_reverb)=0;
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| 	virtual void channel_set_mix_rate(ChannelID p_channel, int p_mix_rate)=0;
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| 	virtual void channel_set_positional(ChannelID p_channel, bool p_positional)=0;
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| 
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| 	virtual float channel_get_volume(ChannelID p_channel) const=0;
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| 	virtual float channel_get_pan(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
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| 	virtual float channel_get_pan_depth(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
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| 	virtual float channel_get_pan_height(ChannelID p_channel) const=0; //pan and depth go from -1 to 1
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| 	virtual FilterType channel_get_filter_type(ChannelID p_channel) const=0;
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| 	virtual float channel_get_filter_cutoff(ChannelID p_channel) const=0;
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| 	virtual float channel_get_filter_resonance(ChannelID p_channel) const=0;
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| 	virtual float channel_get_filter_gain(ChannelID p_channel) const=0;
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| 	virtual float channel_get_chorus(ChannelID p_channel) const=0;
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| 	virtual ReverbRoomType channel_get_reverb_type(ChannelID p_channel) const=0;
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| 	virtual float channel_get_reverb(ChannelID p_channel) const=0;
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| 
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| 	virtual int channel_get_mix_rate(ChannelID p_channel) const=0;
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| 	virtual bool channel_is_positional(ChannelID p_channel) const=0;
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| 	virtual bool channel_is_valid(ChannelID p_channel) const=0;
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| 
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| 
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| 	virtual void channel_free(ChannelID p_channel)=0;
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| 
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| 	virtual void set_mixer_volume(float p_volume)=0;
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| 
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| 
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| 	virtual ~AudioMixer() {}
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| };
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| 
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| 
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| class AudioServer : public Object {
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| 
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| 	OBJ_TYPE( AudioServer, Object );
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| 
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| 	static AudioServer *singleton;
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| protected:
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| friend class AudioStream;
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| friend class EventStream;
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| friend class AudioMixer;
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| 
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| 	virtual AudioMixer *get_mixer()=0;
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| 	virtual void audio_mixer_chunk_callback(int p_frames)=0;
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| 
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| 	static void _bind_methods();
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| public:
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| 
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| 
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| 	class EventStream {
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| 	protected:
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| 		AudioMixer *get_mixer() const;
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| 	public:
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| 		virtual void update(uint64_t p_usec)=0;
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| 
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| 		virtual ~EventStream() {}
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| 	};
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| 
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| 	class AudioStream {
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| 	public:
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| 		virtual int get_channel_count() const=0;
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| 		virtual void set_mix_rate(int p_rate)=0; //notify the stream of the mix rate
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| 		virtual bool mix(int32_t *p_buffer,int p_frames)=0;
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| 		virtual void update()=0;
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| 		virtual bool can_update_mt() const { return true; }
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| 		virtual ~AudioStream() {}
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| 	};
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| 
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| 
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| 	enum SampleFormat {
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| 
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| 		SAMPLE_FORMAT_PCM8,
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| 		SAMPLE_FORMAT_PCM16,
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| 		SAMPLE_FORMAT_IMA_ADPCM
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| 	};
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| 
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| 	enum SampleLoopFormat {
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| 		SAMPLE_LOOP_NONE,
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| 		SAMPLE_LOOP_FORWARD,
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| 		SAMPLE_LOOP_PING_PONG // not supported in every platform
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| 
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| 	};
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| 
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| 	/* SAMPLE API */
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| 
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| 	virtual RID sample_create(SampleFormat p_format, bool p_stereo, int p_length)=0;
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| 
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| 	virtual void sample_set_description(RID p_sample, const String& p_description)=0;
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| 	virtual String sample_get_description(RID p_sample, const String& p_description) const=0;
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| 
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| 	virtual SampleFormat sample_get_format(RID p_sample) const=0;
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| 	virtual bool sample_is_stereo(RID p_sample) const=0;
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| 	virtual int sample_get_length(RID p_sample) const=0;
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| 	virtual const void* sample_get_data_ptr(RID p_sample) const=0;
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| 
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| 	virtual void sample_set_signed_data(RID p_sample, const DVector<float>& p_buffer);
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| 	virtual void sample_set_data(RID p_sample, const DVector<uint8_t>& p_buffer)=0;
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| 	virtual const DVector<uint8_t> sample_get_data(RID p_sample) const=0;
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| 
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| 	virtual void sample_set_mix_rate(RID p_sample,int p_rate)=0;
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| 	virtual int sample_get_mix_rate(RID p_sample) const=0;
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| 
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| 	virtual void sample_set_loop_format(RID p_sample,SampleLoopFormat p_format)=0;
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| 	virtual SampleLoopFormat sample_get_loop_format(RID p_sample) const=0;
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| 
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| 	virtual void sample_set_loop_begin(RID p_sample,int p_pos)=0;
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| 	virtual int sample_get_loop_begin(RID p_sample) const=0;
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| 
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| 	virtual void sample_set_loop_end(RID p_sample,int p_pos)=0;
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| 	virtual int sample_get_loop_end(RID p_sample) const=0;
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| 
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| 
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| 	/* VOICE API */
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| 
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| 	enum FilterType {
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| 		FILTER_NONE,
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| 		FILTER_LOWPASS,
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| 		FILTER_BANDPASS,
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| 		FILTER_HIPASS,
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| 		FILTER_NOTCH,
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| 		FILTER_PEAK,
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| 		FILTER_BANDLIMIT, ///< cutoff is LP resonace is HP
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| 		FILTER_LOW_SHELF,
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| 		FILTER_HIGH_SHELF
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| 	};
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| 
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| 	enum ReverbRoomType {
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| 
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| 		REVERB_SMALL,
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| 		REVERB_MEDIUM,
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| 		REVERB_LARGE,
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| 		REVERB_HALL
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| 	};
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| 
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| 	virtual RID voice_create()=0;
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| 
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| 	virtual void voice_play(RID p_voice, RID p_sample)=0;
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| 
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| 	virtual void voice_set_volume(RID p_voice, float p_gain)=0;
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| 	virtual void voice_set_pan(RID p_voice, float p_pan, float p_depth=0,float height=0)=0; //pan and depth go from -1 to 1
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| 	virtual void voice_set_filter(RID p_voice, FilterType p_type, float p_cutoff, float p_resonance, float p_gain=0)=0;
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| 	virtual void voice_set_chorus(RID p_voice, float p_chorus )=0;
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| 	virtual void voice_set_reverb(RID p_voice, ReverbRoomType p_room_type, float p_reverb)=0;
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| 	virtual void voice_set_mix_rate(RID p_voice, int p_mix_rate)=0;
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| 	virtual void voice_set_positional(RID p_voice, bool p_positional)=0;
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| 
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| 	virtual float voice_get_volume(RID p_voice) const=0;
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| 	virtual float voice_get_pan(RID p_voice) const=0; //pan and depth go from -1 to 1
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| 	virtual float voice_get_pan_depth(RID p_voice) const=0; //pan and depth go from -1 to 1
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| 	virtual float voice_get_pan_height(RID p_voice) const=0; //pan and depth go from -1 to 1
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| 	virtual FilterType voice_get_filter_type(RID p_voice) const=0;
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| 	virtual float voice_get_filter_cutoff(RID p_voice) const=0;
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| 	virtual float voice_get_filter_resonance(RID p_voice) const=0;
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| 	virtual float voice_get_chorus(RID p_voice) const=0;
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| 	virtual ReverbRoomType voice_get_reverb_type(RID p_voice) const=0;
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| 	virtual float voice_get_reverb(RID p_voice) const=0;
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| 
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| 	virtual int voice_get_mix_rate(RID p_voice) const=0;
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| 	virtual bool voice_is_positional(RID p_voice) const=0;
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| 
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| 	virtual void voice_stop(RID p_voice)=0;
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| 	virtual bool voice_is_active(RID p_voice) const=0;
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| 
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| 	/* STREAM API */
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| 
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| 	virtual RID audio_stream_create(AudioStream *p_stream)=0;
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| 	virtual RID event_stream_create(EventStream *p_stream)=0;
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| 
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| 	virtual void stream_set_active(RID p_stream, bool p_active)=0;
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| 	virtual bool stream_is_active(RID p_stream) const=0;
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| 
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| 	virtual void stream_set_volume_scale(RID p_stream, float p_scale)=0;
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| 	virtual float stream_set_volume_scale(RID p_stream) const=0;
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| 
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| 	/* Audio Physics API */
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| 
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| 	virtual void free(RID p_id)=0;
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| 
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| 	virtual void init()=0;
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| 	virtual void finish()=0;
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| 	virtual void update()=0;
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| 
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| 	/* MISC config */
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| 
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| 	virtual void lock()=0;
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| 	virtual void unlock()=0;
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| 	virtual int get_default_channel_count() const=0;
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| 	virtual int get_default_mix_rate() const=0;
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| 
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| 	virtual void set_stream_global_volume_scale(float p_volume)=0;
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| 	virtual void set_fx_global_volume_scale(float p_volume)=0;
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| 	virtual void set_event_voice_global_volume_scale(float p_volume)=0;
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| 
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| 	virtual float get_stream_global_volume_scale() const=0;
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| 	virtual float get_fx_global_volume_scale() const=0;
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| 	virtual float get_event_voice_global_volume_scale() const=0;
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| 
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| 	virtual uint32_t read_output_peak() const=0;
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| 
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| 	static AudioServer *get_singleton();
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| 
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| 	virtual double get_mix_time() const=0; //useful for video -> audio sync
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| 
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| 	AudioServer();
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| 	virtual ~AudioServer();
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| };
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| 
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| VARIANT_ENUM_CAST( AudioServer::SampleFormat );
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| VARIANT_ENUM_CAST( AudioServer::SampleLoopFormat );
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| VARIANT_ENUM_CAST( AudioServer::FilterType );
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| VARIANT_ENUM_CAST( AudioServer::ReverbRoomType );
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| 
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| typedef AudioServer AS;
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| 
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| #endif // AUDIO_SERVER_H
 | 
