195 lines
7.3 KiB
C++
195 lines
7.3 KiB
C++
/**************************************************************************/
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/* audio_driver_web.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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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_DRIVER_WEB_H
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#define AUDIO_DRIVER_WEB_H
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#include "godot_audio.h"
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#include "godot_js.h"
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#include "core/os/mutex.h"
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#include "core/os/thread.h"
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#include "servers/audio_server.h"
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class AudioDriverWeb : public AudioDriver {
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private:
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struct AudioContext {
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bool inited = false;
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float output_latency = 0.0;
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int state = -1;
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int channel_count = 0;
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int mix_rate = 0;
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};
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static AudioContext audio_context;
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float *output_rb = nullptr;
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float *input_rb = nullptr;
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int buffer_length = 0;
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int mix_rate = 0;
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int channel_count = 0;
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WASM_EXPORT static void _state_change_callback(int p_state);
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WASM_EXPORT static void _latency_update_callback(float p_latency);
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WASM_EXPORT static void _sample_playback_finished_callback(const char *p_playback_object_id);
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static AudioDriverWeb *singleton;
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protected:
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void _audio_driver_process(int p_from = 0, int p_samples = 0);
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void _audio_driver_capture(int p_from = 0, int p_samples = 0);
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float *get_output_rb() const { return output_rb; }
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float *get_input_rb() const { return input_rb; }
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virtual Error create(int &p_buffer_samples, int p_channels) = 0;
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virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) = 0;
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virtual void finish_driver() {}
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public:
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static bool is_available();
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virtual Error init() final;
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virtual void start() final;
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virtual void finish() final;
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virtual int get_mix_rate() const override;
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virtual SpeakerMode get_speaker_mode() const override;
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virtual float get_latency() override;
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virtual Error input_start() override;
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virtual Error input_stop() override;
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static void resume();
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// Samples.
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virtual bool is_stream_registered_as_sample(const Ref<AudioStream> &p_stream) const override;
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virtual void register_sample(const Ref<AudioSample> &p_sample) override;
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virtual void unregister_sample(const Ref<AudioSample> &p_sample) override;
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virtual void start_sample_playback(const Ref<AudioSamplePlayback> &p_playback) override;
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virtual void stop_sample_playback(const Ref<AudioSamplePlayback> &p_playback) override;
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virtual void set_sample_playback_pause(const Ref<AudioSamplePlayback> &p_playback, bool p_paused) override;
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virtual bool is_sample_playback_active(const Ref<AudioSamplePlayback> &p_playback) override;
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virtual void update_sample_playback_pitch_scale(const Ref<AudioSamplePlayback> &p_playback, float p_pitch_scale = 0.0f) override;
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virtual void set_sample_playback_bus_volumes_linear(const Ref<AudioSamplePlayback> &p_playback, const HashMap<StringName, Vector<AudioFrame>> &p_bus_volumes) override;
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virtual void set_sample_bus_count(int p_count) override;
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virtual void remove_sample_bus(int p_index) override;
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virtual void add_sample_bus(int p_at_pos = -1) override;
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virtual void move_sample_bus(int p_bus, int p_to_pos) override;
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virtual void set_sample_bus_send(int p_bus, const StringName &p_send) override;
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virtual void set_sample_bus_volume_db(int p_bus, float p_volume_db) override;
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virtual void set_sample_bus_solo(int p_bus, bool p_enable) override;
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virtual void set_sample_bus_mute(int p_bus, bool p_enable) override;
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AudioDriverWeb() {}
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};
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#ifdef THREADS_ENABLED
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class AudioDriverWorklet : public AudioDriverWeb {
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private:
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enum {
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STATE_LOCK,
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STATE_PROCESS,
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STATE_SAMPLES_IN,
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STATE_SAMPLES_OUT,
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STATE_MAX,
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};
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Mutex mutex;
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Thread thread;
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bool quit = false;
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int32_t state[STATE_MAX] = { 0 };
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static void _audio_thread_func(void *p_data);
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protected:
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virtual Error create(int &p_buffer_size, int p_output_channels) override;
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virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
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virtual void finish_driver() override;
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public:
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virtual const char *get_name() const override {
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return "AudioWorklet";
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}
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virtual void lock() override;
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virtual void unlock() override;
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};
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#else
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class AudioDriverWorklet : public AudioDriverWeb {
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private:
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static void _process_callback(int p_pos, int p_samples);
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static void _capture_callback(int p_pos, int p_samples);
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static AudioDriverWorklet *singleton;
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protected:
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virtual Error create(int &p_buffer_size, int p_output_channels) override;
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virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
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public:
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virtual const char *get_name() const override {
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return "AudioWorklet";
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}
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virtual void lock() override {}
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virtual void unlock() override {}
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static AudioDriverWorklet *get_singleton() { return singleton; }
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AudioDriverWorklet() { singleton = this; }
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};
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class AudioDriverScriptProcessor : public AudioDriverWeb {
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private:
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static void _process_callback();
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static AudioDriverScriptProcessor *singleton;
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protected:
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virtual Error create(int &p_buffer_size, int p_output_channels) override;
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virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
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virtual void finish_driver() override;
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public:
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virtual const char *get_name() const override { return "ScriptProcessor"; }
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virtual void lock() override {}
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virtual void unlock() override {}
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static AudioDriverScriptProcessor *get_singleton() { return singleton; }
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AudioDriverScriptProcessor() { singleton = this; }
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};
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#endif // THREADS_ENABLED
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#endif // AUDIO_DRIVER_WEB_H
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