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Diffstat (limited to 'platform/web/audio_driver_web.h')
| -rw-r--r-- | platform/web/audio_driver_web.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/platform/web/audio_driver_web.h b/platform/web/audio_driver_web.h new file mode 100644 index 0000000000..dfce277c0c --- /dev/null +++ b/platform/web/audio_driver_web.h @@ -0,0 +1,161 @@ +/*************************************************************************/ +/* audio_driver_web.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 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: */ +/* */ +/* 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_WEB_H +#define AUDIO_DRIVER_WEB_H + +#include "core/os/mutex.h" +#include "core/os/thread.h" +#include "servers/audio_server.h" + +#include "godot_audio.h" + +class AudioDriverWeb : 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 AudioDriverWeb *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(); + + AudioDriverWeb() {} +}; + +#ifdef NO_THREADS +class AudioDriverScriptProcessor : public AudioDriverWeb { +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 AudioDriverWeb { +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 AudioDriverWeb { +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_WEB_H |