godot/servers/audio_server.cpp

/*************************************************************************/
/*  audio_server.cpp                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
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/*************************************************************************/
#include "audio_server.h"
#include "globals.h"

void AudioMixer::audio_mixer_chunk_call(int p_frames) {

	AudioServer::get_singleton()->audio_mixer_chunk_callback(p_frames);
}

AudioMixer *AudioServer::EventStream::get_mixer() const {

	return AudioServer::get_singleton()->get_mixer();
}

AudioServer *AudioServer::singleton = NULL;

AudioServer *AudioServer::get_singleton() {

	return singleton;
}

void AudioServer::sample_set_signed_data(RID p_sample, const DVector<float> &p_buffer) {

	SampleFormat format = sample_get_format(p_sample);

	ERR_EXPLAIN("IMA ADPCM is not supported.");
	ERR_FAIL_COND(format == SAMPLE_FORMAT_IMA_ADPCM);

	int len = p_buffer.size();
	ERR_FAIL_COND(len == 0);

	DVector<uint8_t> data;
	DVector<uint8_t>::Write w;
	DVector<float>::Read r = p_buffer.read();

	switch (format) {
		case SAMPLE_FORMAT_PCM8: {
			data.resize(len);
			w = data.write();

			int8_t *samples8 = (int8_t *)w.ptr();

			for (int i = 0; i < len; i++) {

				float sample = Math::floor(r[i] * (1 << 8));
				if (sample < -128)
					sample = -128;
				else if (sample > 127)
					sample = 127;
				samples8[i] = sample;
			}
		} break;
		case SAMPLE_FORMAT_PCM16: {
			data.resize(len * 2);
			w = data.write();

			int16_t *samples16 = (int16_t *)w.ptr();

			for (int i = 0; i < len; i++) {

				float sample = Math::floor(r[i] * (1 << 16));
				if (sample < -32768)
					sample = -32768;
				else if (sample > 32767)
					sample = 32767;
				samples16[i] = sample;
			}
		} break;
	}

	w = DVector<uint8_t>::Write();

	sample_set_data(p_sample, data);
}

void AudioServer::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("sample_create", "format", "stereo", "length"), &AudioServer::sample_create);
	ObjectTypeDB::bind_method(_MD("sample_set_description", "sample", "description"), &AudioServer::sample_set_description);
	ObjectTypeDB::bind_method(_MD("sample_get_description", "sample"), &AudioServer::sample_get_description);

	ObjectTypeDB::bind_method(_MD("sample_get_format", "sample"), &AudioServer::sample_get_format);
	ObjectTypeDB::bind_method(_MD("sample_is_stereo", "sample"), &AudioServer::sample_is_stereo);
	ObjectTypeDB::bind_method(_MD("sample_get_length", "sample"), &AudioServer::sample_get_length);

	ObjectTypeDB::bind_method(_MD("sample_set_signed_data", "sample", "data"), &AudioServer::sample_set_signed_data);
	ObjectTypeDB::bind_method(_MD("sample_set_data", "sample", "data"), &AudioServer::sample_set_data);
	ObjectTypeDB::bind_method(_MD("sample_get_data", "sample"), &AudioServer::sample_get_data);

	ObjectTypeDB::bind_method(_MD("sample_set_mix_rate", "sample", "mix_rate"), &AudioServer::sample_set_mix_rate);
	ObjectTypeDB::bind_method(_MD("sample_get_mix_rate", "sample"), &AudioServer::sample_get_mix_rate);

	ObjectTypeDB::bind_method(_MD("sample_set_loop_format", "sample", "loop_format"), &AudioServer::sample_set_loop_format);
	ObjectTypeDB::bind_method(_MD("sample_get_loop_format", "sample"), &AudioServer::sample_get_loop_format);

	ObjectTypeDB::bind_method(_MD("sample_set_loop_begin", "sample", "pos"), &AudioServer::sample_set_loop_begin);
	ObjectTypeDB::bind_method(_MD("sample_get_loop_begin", "sample"), &AudioServer::sample_get_loop_begin);

	ObjectTypeDB::bind_method(_MD("sample_set_loop_end", "sample", "pos"), &AudioServer::sample_set_loop_end);
	ObjectTypeDB::bind_method(_MD("sample_get_loop_end", "sample"), &AudioServer::sample_get_loop_end);

	ObjectTypeDB::bind_method(_MD("voice_create"), &AudioServer::voice_create);
	ObjectTypeDB::bind_method(_MD("voice_play", "voice", "sample"), &AudioServer::voice_play);
	ObjectTypeDB::bind_method(_MD("voice_set_volume", "voice", "volume"), &AudioServer::voice_set_volume);
	ObjectTypeDB::bind_method(_MD("voice_set_pan", "voice", "pan", "depth", "height"), &AudioServer::voice_set_pan, DEFVAL(0), DEFVAL(0));
	ObjectTypeDB::bind_method(_MD("voice_set_filter", "voice", "type", "cutoff", "resonance", "gain"), &AudioServer::voice_set_filter, DEFVAL(0));
	ObjectTypeDB::bind_method(_MD("voice_set_chorus", "voice", "chorus"), &AudioServer::voice_set_chorus);
	ObjectTypeDB::bind_method(_MD("voice_set_reverb", "voice", "room", "reverb"), &AudioServer::voice_set_reverb);
	ObjectTypeDB::bind_method(_MD("voice_set_mix_rate", "voice", "rate"), &AudioServer::voice_set_mix_rate);
	ObjectTypeDB::bind_method(_MD("voice_set_positional", "voice", "enabled"), &AudioServer::voice_set_positional);

	ObjectTypeDB::bind_method(_MD("voice_get_volume", "voice"), &AudioServer::voice_get_volume);
	ObjectTypeDB::bind_method(_MD("voice_get_pan", "voice"), &AudioServer::voice_get_pan);
	ObjectTypeDB::bind_method(_MD("voice_get_pan_height", "voice"), &AudioServer::voice_get_pan_height);
	ObjectTypeDB::bind_method(_MD("voice_get_pan_depth", "voice"), &AudioServer::voice_get_pan_depth);
	ObjectTypeDB::bind_method(_MD("voice_get_filter_type", "voice"), &AudioServer::voice_get_filter_type);
	ObjectTypeDB::bind_method(_MD("voice_get_filter_cutoff", "voice"), &AudioServer::voice_get_filter_cutoff);
	ObjectTypeDB::bind_method(_MD("voice_get_filter_resonance", "voice"), &AudioServer::voice_get_filter_resonance);
	ObjectTypeDB::bind_method(_MD("voice_get_chorus", "voice"), &AudioServer::voice_get_chorus);
	ObjectTypeDB::bind_method(_MD("voice_get_reverb_type", "voice"), &AudioServer::voice_get_reverb_type);
	ObjectTypeDB::bind_method(_MD("voice_get_reverb", "voice"), &AudioServer::voice_get_reverb);
	ObjectTypeDB::bind_method(_MD("voice_get_mix_rate", "voice"), &AudioServer::voice_get_mix_rate);
	ObjectTypeDB::bind_method(_MD("voice_is_positional", "voice"), &AudioServer::voice_is_positional);

	ObjectTypeDB::bind_method(_MD("voice_stop", "voice"), &AudioServer::voice_stop);

	ObjectTypeDB::bind_method(_MD("free_rid", "rid"), &AudioServer::free);

	ObjectTypeDB::bind_method(_MD("set_stream_global_volume_scale", "scale"), &AudioServer::set_stream_global_volume_scale);
	ObjectTypeDB::bind_method(_MD("get_stream_global_volume_scale"), &AudioServer::get_stream_global_volume_scale);

	ObjectTypeDB::bind_method(_MD("set_fx_global_volume_scale", "scale"), &AudioServer::set_fx_global_volume_scale);
	ObjectTypeDB::bind_method(_MD("get_fx_global_volume_scale"), &AudioServer::get_fx_global_volume_scale);

	ObjectTypeDB::bind_method(_MD("set_event_voice_global_volume_scale", "scale"), &AudioServer::set_event_voice_global_volume_scale);
	ObjectTypeDB::bind_method(_MD("get_event_voice_global_volume_scale"), &AudioServer::get_event_voice_global_volume_scale);

	BIND_CONSTANT(SAMPLE_FORMAT_PCM8);
	BIND_CONSTANT(SAMPLE_FORMAT_PCM16);
	BIND_CONSTANT(SAMPLE_FORMAT_IMA_ADPCM);

	BIND_CONSTANT(SAMPLE_LOOP_NONE);
	BIND_CONSTANT(SAMPLE_LOOP_FORWARD);
	BIND_CONSTANT(SAMPLE_LOOP_PING_PONG);

	BIND_CONSTANT(FILTER_NONE);
	BIND_CONSTANT(FILTER_LOWPASS);
	BIND_CONSTANT(FILTER_BANDPASS);
	BIND_CONSTANT(FILTER_HIPASS);
	BIND_CONSTANT(FILTER_NOTCH);
	BIND_CONSTANT(FILTER_BANDLIMIT); ///< cutoff is LP resonace is HP

	BIND_CONSTANT(REVERB_SMALL);
	BIND_CONSTANT(REVERB_MEDIUM);
	BIND_CONSTANT(REVERB_LARGE);
	BIND_CONSTANT(REVERB_HALL);

	GLOBAL_DEF("audio/stream_buffering_ms", 500);
	GLOBAL_DEF("audio/video_delay_compensation_ms", 300);
}

AudioServer::AudioServer() {

	singleton = this;
}

AudioServer::~AudioServer() {
}