/**************************************************************************/ /* audio_driver_javascript.h */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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: */ /* */ /* 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 */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /**************************************************************************/ #ifndef AUDIO_DRIVER_JAVASCRIPT_H #define AUDIO_DRIVER_JAVASCRIPT_H #include "core/os/mutex.h" #include "core/os/thread.h" #include "servers/audio_server.h" #include "godot_audio.h" class AudioDriverJavaScript : public AudioDriver { private: struct AudioContext { bool inited = false; float output_latency = 0.0; int state = -1; int channel_count = 0; int mix_rate = 0; }; static AudioContext audio_context; float *output_rb = nullptr; float *input_rb = nullptr; int buffer_length = 0; int mix_rate = 0; int channel_count = 0; static void _state_change_callback(int p_state); static void _latency_update_callback(float p_latency); static AudioDriverJavaScript *singleton; protected: void _audio_driver_process(int p_from = 0, int p_samples = 0); void _audio_driver_capture(int p_from = 0, int p_samples = 0); float *get_output_rb() const { return output_rb; } float *get_input_rb() const { return input_rb; } virtual Error create(int &p_buffer_samples, int p_channels) = 0; virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) = 0; virtual void finish_driver() {} public: static bool is_available(); virtual Error init() final; virtual void start() final; virtual void finish() final; virtual float get_latency() override; virtual int get_mix_rate() const override; virtual SpeakerMode get_speaker_mode() const override; virtual Error capture_start() override; virtual Error capture_stop() override; static void resume(); AudioDriverJavaScript() {} }; #ifdef NO_THREADS class AudioDriverScriptProcessor : public AudioDriverJavaScript { private: static void _process_callback(); static AudioDriverScriptProcessor *singleton; protected: Error create(int &p_buffer_samples, int p_channels) override; void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override; public: virtual const char *get_name() const override { return "ScriptProcessor"; } virtual void lock() override {} virtual void unlock() override {} AudioDriverScriptProcessor() { singleton = this; } }; class AudioDriverWorklet : public AudioDriverJavaScript { private: static void _process_callback(int p_pos, int p_samples); static void _capture_callback(int p_pos, int p_samples); static AudioDriverWorklet *singleton; protected: virtual Error create(int &p_buffer_size, int p_output_channels) override; virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override; public: virtual const char *get_name() const override { return "AudioWorklet"; } virtual void lock() override {} virtual void unlock() override {} AudioDriverWorklet() { singleton = this; } }; #else class AudioDriverWorklet : public AudioDriverJavaScript { private: enum { STATE_LOCK, STATE_PROCESS, STATE_SAMPLES_IN, STATE_SAMPLES_OUT, STATE_MAX, }; Mutex mutex; Thread thread; bool quit = false; int32_t state[STATE_MAX] = { 0 }; static void _audio_thread_func(void *p_data); protected: virtual Error create(int &p_buffer_size, int p_output_channels) override; virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override; virtual void finish_driver() override; public: virtual const char *get_name() const override { return "AudioWorklet"; } void lock() override; void unlock() override; }; #endif #endif // AUDIO_DRIVER_JAVASCRIPT_H