diff options
Diffstat (limited to 'platform/javascript/audio_driver_javascript.cpp')
| -rw-r--r-- | platform/javascript/audio_driver_javascript.cpp | 304 |
1 files changed, 204 insertions, 100 deletions
diff --git a/platform/javascript/audio_driver_javascript.cpp b/platform/javascript/audio_driver_javascript.cpp index 6ea948004e..626aef3c60 100644 --- a/platform/javascript/audio_driver_javascript.cpp +++ b/platform/javascript/audio_driver_javascript.cpp @@ -5,8 +5,8 @@ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ -/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 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 */ @@ -30,107 +30,120 @@ #include "audio_driver_javascript.h" -#include "core/project_settings.h" -#include "godot_audio.h" +#include "core/config/project_settings.h" #include <emscripten.h> -AudioDriverJavaScript *AudioDriverJavaScript::singleton = nullptr; +AudioDriverJavaScript::AudioContext AudioDriverJavaScript::audio_context; bool AudioDriverJavaScript::is_available() { return godot_audio_is_available() != 0; } -const char *AudioDriverJavaScript::get_name() const { - return "JavaScript"; +void AudioDriverJavaScript::_state_change_callback(int p_state) { + AudioDriverJavaScript::audio_context.state = p_state; } -#ifndef NO_THREADS -void AudioDriverJavaScript::_audio_thread_func(void *p_data) { - AudioDriverJavaScript *obj = static_cast<AudioDriverJavaScript *>(p_data); - while (!obj->quit) { - obj->lock(); - if (!obj->needs_process) { - obj->unlock(); - OS::get_singleton()->delay_usec(1000); // Give the browser some slack. - continue; - } - obj->_js_driver_process(); - obj->needs_process = false; - obj->unlock(); - } +void AudioDriverJavaScript::_latency_update_callback(float p_latency) { + AudioDriverJavaScript::audio_context.output_latency = p_latency; } -#endif -extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_process_start() { -#ifndef NO_THREADS - AudioDriverJavaScript::singleton->lock(); -#else - AudioDriverJavaScript::singleton->_js_driver_process(); -#endif -} +void AudioDriverJavaScript::_audio_driver_process(int p_from, int p_samples) { + int32_t *stream_buffer = reinterpret_cast<int32_t *>(output_rb); + const int max_samples = memarr_len(output_rb); -extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_process_end() { -#ifndef NO_THREADS - AudioDriverJavaScript::singleton->needs_process = true; - AudioDriverJavaScript::singleton->unlock(); -#endif -} - -extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_process_capture(float sample) { - AudioDriverJavaScript::singleton->process_capture(sample); + int write_pos = p_from; + int to_write = p_samples; + if (to_write == 0) { + to_write = max_samples; + } + // High part + if (write_pos + to_write > max_samples) { + const int samples_high = max_samples - write_pos; + audio_server_process(samples_high / channel_count, &stream_buffer[write_pos]); + for (int i = write_pos; i < max_samples; i++) { + output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f; + } + to_write -= samples_high; + write_pos = 0; + } + // Leftover + audio_server_process(to_write / channel_count, &stream_buffer[write_pos]); + for (int i = write_pos; i < write_pos + to_write; i++) { + output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f; + } } -void AudioDriverJavaScript::_js_driver_process() { - int sample_count = memarr_len(internal_buffer) / channel_count; - int32_t *stream_buffer = reinterpret_cast<int32_t *>(internal_buffer); - audio_server_process(sample_count, stream_buffer); - for (int i = 0; i < sample_count * channel_count; i++) { - internal_buffer[i] = float(stream_buffer[i] >> 16) / 32768.f; +void AudioDriverJavaScript::_audio_driver_capture(int p_from, int p_samples) { + if (get_input_buffer().size() == 0) { + return; // Input capture stopped. } -} + const int max_samples = memarr_len(input_rb); -void AudioDriverJavaScript::process_capture(float sample) { - int32_t sample32 = int32_t(sample * 32768.f) * (1U << 16); - input_buffer_write(sample32); + int read_pos = p_from; + int to_read = p_samples; + if (to_read == 0) { + to_read = max_samples; + } + // High part + if (read_pos + to_read > max_samples) { + const int samples_high = max_samples - read_pos; + for (int i = read_pos; i < max_samples; i++) { + input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16)); + } + to_read -= samples_high; + read_pos = 0; + } + // Leftover + for (int i = read_pos; i < read_pos + to_read; i++) { + input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16)); + } } Error AudioDriverJavaScript::init() { - mix_rate = GLOBAL_GET("audio/mix_rate"); - int latency = GLOBAL_GET("audio/output_latency"); - - channel_count = godot_audio_init(mix_rate, latency); - buffer_length = closest_power_of_2((latency * mix_rate / 1000) * channel_count); - buffer_length = godot_audio_create_processor(buffer_length, channel_count); - if (!buffer_length) { - return FAILED; + int latency = GLOBAL_GET("audio/driver/output_latency"); + if (!audio_context.inited) { + audio_context.mix_rate = GLOBAL_GET("audio/driver/mix_rate"); + audio_context.channel_count = godot_audio_init(&audio_context.mix_rate, latency, &_state_change_callback, &_latency_update_callback); + audio_context.inited = true; } - - if (!internal_buffer || (int)memarr_len(internal_buffer) != buffer_length * channel_count) { - if (internal_buffer) - memdelete_arr(internal_buffer); - internal_buffer = memnew_arr(float, buffer_length *channel_count); + mix_rate = audio_context.mix_rate; + channel_count = audio_context.channel_count; + buffer_length = closest_power_of_2((latency * mix_rate / 1000)); + Error err = create(buffer_length, channel_count); + if (err != OK) { + return err; } - - if (!internal_buffer) { + if (output_rb) { + memdelete_arr(output_rb); + } + const size_t array_size = buffer_length * (size_t)channel_count; + output_rb = memnew_arr(float, array_size); + if (!output_rb) { + return ERR_OUT_OF_MEMORY; + } + if (input_rb) { + memdelete_arr(input_rb); + } + input_rb = memnew_arr(float, array_size); + if (!input_rb) { return ERR_OUT_OF_MEMORY; } return OK; } void AudioDriverJavaScript::start() { -#ifndef NO_THREADS - thread = Thread::create(_audio_thread_func, this); -#endif - godot_audio_start(internal_buffer); + start(output_rb, memarr_len(output_rb), input_rb, memarr_len(input_rb)); } void AudioDriverJavaScript::resume() { - godot_audio_resume(); + if (audio_context.state == 0) { // 'suspended' + godot_audio_resume(); + } } float AudioDriverJavaScript::get_latency() { - return godot_audio_get_latency(); + return audio_context.output_latency + (float(buffer_length) / mix_rate); } int AudioDriverJavaScript::get_mix_rate() const { @@ -141,49 +154,140 @@ AudioDriver::SpeakerMode AudioDriverJavaScript::get_speaker_mode() const { return get_speaker_mode_by_total_channels(channel_count); } -void AudioDriverJavaScript::lock() { -#ifndef NO_THREADS - mutex.lock(); -#endif -} - -void AudioDriverJavaScript::unlock() { -#ifndef NO_THREADS - mutex.unlock(); -#endif -} - -void AudioDriverJavaScript::finish_async() { -#ifndef NO_THREADS - quit = true; // Ask thread to quit. -#endif - godot_audio_finish_async(); -} - void AudioDriverJavaScript::finish() { -#ifndef NO_THREADS - Thread::wait_to_finish(thread); - memdelete(thread); - thread = NULL; -#endif - if (internal_buffer) { - memdelete_arr(internal_buffer); - internal_buffer = nullptr; + finish_driver(); + if (output_rb) { + memdelete_arr(output_rb); + output_rb = nullptr; + } + if (input_rb) { + memdelete_arr(input_rb); + input_rb = nullptr; } } Error AudioDriverJavaScript::capture_start() { - godot_audio_capture_stop(); + lock(); input_buffer_init(buffer_length); - godot_audio_capture_start(); + unlock(); + if (godot_audio_capture_start()) { + return FAILED; + } return OK; } Error AudioDriverJavaScript::capture_stop() { + godot_audio_capture_stop(); + lock(); input_buffer.clear(); + unlock(); return OK; } -AudioDriverJavaScript::AudioDriverJavaScript() { - singleton = this; +#ifdef NO_THREADS +/// ScriptProcessorNode implementation +AudioDriverScriptProcessor *AudioDriverScriptProcessor::singleton = nullptr; + +void AudioDriverScriptProcessor::_process_callback() { + AudioDriverScriptProcessor::singleton->_audio_driver_capture(); + AudioDriverScriptProcessor::singleton->_audio_driver_process(); +} + +Error AudioDriverScriptProcessor::create(int &p_buffer_samples, int p_channels) { + if (!godot_audio_has_script_processor()) { + return ERR_UNAVAILABLE; + } + return (Error)godot_audio_script_create(&p_buffer_samples, p_channels); +} + +void AudioDriverScriptProcessor::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) { + godot_audio_script_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, &_process_callback); +} + +/// AudioWorkletNode implementation (no threads) +AudioDriverWorklet *AudioDriverWorklet::singleton = nullptr; + +Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) { + if (!godot_audio_has_worklet()) { + return ERR_UNAVAILABLE; + } + return (Error)godot_audio_worklet_create(p_channels); +} + +void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) { + _audio_driver_process(); + godot_audio_worklet_start_no_threads(p_out_buf, p_out_buf_size, &_process_callback, p_in_buf, p_in_buf_size, &_capture_callback); +} + +void AudioDriverWorklet::_process_callback(int p_pos, int p_samples) { + AudioDriverWorklet *driver = AudioDriverWorklet::singleton; + driver->_audio_driver_process(p_pos, p_samples); +} + +void AudioDriverWorklet::_capture_callback(int p_pos, int p_samples) { + AudioDriverWorklet *driver = AudioDriverWorklet::singleton; + driver->_audio_driver_capture(p_pos, p_samples); } +#else +/// AudioWorkletNode implementation (threads) +void AudioDriverWorklet::_audio_thread_func(void *p_data) { + AudioDriverWorklet *driver = static_cast<AudioDriverWorklet *>(p_data); + const int out_samples = memarr_len(driver->get_output_rb()); + const int in_samples = memarr_len(driver->get_input_rb()); + int wpos = 0; + int to_write = out_samples; + int rpos = 0; + int to_read = 0; + int32_t step = 0; + while (!driver->quit) { + if (to_read) { + driver->lock(); + driver->_audio_driver_capture(rpos, to_read); + godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_IN, -to_read); + driver->unlock(); + rpos += to_read; + if (rpos >= in_samples) { + rpos -= in_samples; + } + } + if (to_write) { + driver->lock(); + driver->_audio_driver_process(wpos, to_write); + godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_OUT, to_write); + driver->unlock(); + wpos += to_write; + if (wpos >= out_samples) { + wpos -= out_samples; + } + } + step = godot_audio_worklet_state_wait(driver->state, STATE_PROCESS, step, 1); + to_write = out_samples - godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_OUT); + to_read = godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_IN); + } +} + +Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) { + if (!godot_audio_has_worklet()) { + return ERR_UNAVAILABLE; + } + return (Error)godot_audio_worklet_create(p_channels); +} + +void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) { + godot_audio_worklet_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, state); + thread.start(_audio_thread_func, this); +} + +void AudioDriverWorklet::lock() { + mutex.lock(); +} + +void AudioDriverWorklet::unlock() { + mutex.unlock(); +} + +void AudioDriverWorklet::finish_driver() { + quit = true; // Ask thread to quit. + thread.wait_to_finish(); +} +#endif |