127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
/*************************************************************************/
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/* audio_driver_javascript.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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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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_JAVASCRIPT_H
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#define AUDIO_DRIVER_JAVASCRIPT_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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#include "godot_audio.h"
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class AudioDriverJavaScript : public AudioDriver {
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public:
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class AudioNode {
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public:
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virtual int create(int p_buffer_size, int p_output_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() {}
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virtual void lock() {}
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virtual void unlock() {}
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virtual ~AudioNode() {}
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};
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class WorkletNode : public AudioNode {
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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 = nullptr;
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Thread *thread = nullptr;
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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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public:
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int create(int p_buffer_size, int p_output_channels) override;
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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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void finish() override;
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void lock() override;
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void unlock() override;
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};
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class ScriptProcessorNode : public AudioNode {
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private:
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static void _process_callback();
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public:
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int create(int p_buffer_samples, int p_channels) override;
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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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};
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private:
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AudioNode *node = nullptr;
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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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int state = 0;
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float output_latency = 0.0;
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static void _state_change_callback(int p_state);
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static void _latency_update_callback(float p_latency);
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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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public:
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static bool is_available();
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static AudioDriverJavaScript *singleton;
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virtual const char *get_name() const;
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virtual Error init();
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virtual void start();
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void resume();
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virtual float get_latency();
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virtual int get_mix_rate() const;
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virtual SpeakerMode get_speaker_mode() const;
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virtual void lock();
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virtual void unlock();
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virtual void finish();
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virtual Error capture_start();
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virtual Error capture_stop();
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AudioDriverJavaScript();
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};
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#endif
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