475 lines
16 KiB
C++
475 lines
16 KiB
C++
/**************************************************************************/
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/* audio_driver_web.cpp */
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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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#include "audio_driver_web.h"
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#include "godot_audio.h"
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#include "core/config/project_settings.h"
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#include "servers/audio/audio_stream.h"
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#include <emscripten.h>
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AudioDriverWeb::AudioContext AudioDriverWeb::audio_context;
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bool AudioDriverWeb::is_available() {
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return godot_audio_is_available() != 0;
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}
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void AudioDriverWeb::_state_change_callback(int p_state) {
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AudioDriverWeb::audio_context.state = p_state;
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}
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void AudioDriverWeb::_latency_update_callback(float p_latency) {
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AudioDriverWeb::audio_context.output_latency = p_latency;
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}
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void AudioDriverWeb::_audio_driver_process(int p_from, int p_samples) {
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int32_t *stream_buffer = reinterpret_cast<int32_t *>(output_rb);
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const int max_samples = memarr_len(output_rb);
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int write_pos = p_from;
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int to_write = p_samples;
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if (to_write == 0) {
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to_write = max_samples;
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}
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// High part
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if (write_pos + to_write > max_samples) {
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const int samples_high = max_samples - write_pos;
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audio_server_process(samples_high / channel_count, &stream_buffer[write_pos]);
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for (int i = write_pos; i < max_samples; i++) {
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output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f;
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}
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to_write -= samples_high;
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write_pos = 0;
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}
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// Leftover
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audio_server_process(to_write / channel_count, &stream_buffer[write_pos]);
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for (int i = write_pos; i < write_pos + to_write; i++) {
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output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f;
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}
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}
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void AudioDriverWeb::_audio_driver_capture(int p_from, int p_samples) {
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if (get_input_buffer().size() == 0) {
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return; // Input capture stopped.
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}
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const int max_samples = memarr_len(input_rb);
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int read_pos = p_from;
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int to_read = p_samples;
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if (to_read == 0) {
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to_read = max_samples;
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}
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// High part
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if (read_pos + to_read > max_samples) {
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const int samples_high = max_samples - read_pos;
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for (int i = read_pos; i < max_samples; i++) {
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input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16));
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}
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to_read -= samples_high;
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read_pos = 0;
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}
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// Leftover
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for (int i = read_pos; i < read_pos + to_read; i++) {
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input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16));
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}
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}
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Error AudioDriverWeb::init() {
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int latency = Engine::get_singleton()->get_audio_output_latency();
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if (!audio_context.inited) {
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audio_context.mix_rate = _get_configured_mix_rate();
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audio_context.channel_count = godot_audio_init(&audio_context.mix_rate, latency, &_state_change_callback, &_latency_update_callback);
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audio_context.inited = true;
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}
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mix_rate = audio_context.mix_rate;
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channel_count = audio_context.channel_count;
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buffer_length = closest_power_of_2((latency * mix_rate / 1000));
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Error err = create(buffer_length, channel_count);
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if (err != OK) {
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return err;
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}
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if (output_rb) {
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memdelete_arr(output_rb);
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}
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const size_t array_size = buffer_length * (size_t)channel_count;
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output_rb = memnew_arr(float, array_size);
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if (!output_rb) {
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return ERR_OUT_OF_MEMORY;
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}
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if (input_rb) {
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memdelete_arr(input_rb);
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}
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input_rb = memnew_arr(float, array_size);
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if (!input_rb) {
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return ERR_OUT_OF_MEMORY;
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}
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return OK;
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}
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void AudioDriverWeb::start() {
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start(output_rb, memarr_len(output_rb), input_rb, memarr_len(input_rb));
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}
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void AudioDriverWeb::resume() {
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if (audio_context.state == 0) { // 'suspended'
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godot_audio_resume();
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}
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}
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float AudioDriverWeb::get_latency() {
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return audio_context.output_latency + (float(buffer_length) / mix_rate);
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}
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int AudioDriverWeb::get_mix_rate() const {
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return mix_rate;
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}
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AudioDriver::SpeakerMode AudioDriverWeb::get_speaker_mode() const {
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return get_speaker_mode_by_total_channels(channel_count);
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}
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void AudioDriverWeb::finish() {
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finish_driver();
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if (output_rb) {
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memdelete_arr(output_rb);
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output_rb = nullptr;
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}
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if (input_rb) {
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memdelete_arr(input_rb);
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input_rb = nullptr;
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}
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}
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Error AudioDriverWeb::input_start() {
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lock();
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input_buffer_init(buffer_length);
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unlock();
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if (godot_audio_input_start()) {
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return FAILED;
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}
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return OK;
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}
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Error AudioDriverWeb::input_stop() {
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godot_audio_input_stop();
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lock();
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input_buffer.clear();
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unlock();
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return OK;
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}
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bool AudioDriverWeb::is_stream_registered_as_sample(const Ref<AudioStream> &p_stream) const {
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ERR_FAIL_COND_V_MSG(p_stream.is_null(), false, "Parameter p_stream is null.");
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return godot_audio_sample_stream_is_registered(itos(p_stream->get_instance_id()).utf8().get_data()) != 0;
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}
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void AudioDriverWeb::register_sample(const Ref<AudioSample> &p_sample) {
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ERR_FAIL_COND_MSG(p_sample.is_null(), "Parameter p_sample is null.");
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ERR_FAIL_COND_MSG(p_sample->stream.is_null(), "Parameter p_sample->stream is null.");
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String loop_mode;
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switch (p_sample->loop_mode) {
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case AudioSample::LoopMode::LOOP_DISABLED: {
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loop_mode = "disabled";
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} break;
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case AudioSample::LoopMode::LOOP_FORWARD: {
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loop_mode = "forward";
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} break;
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case AudioSample::LoopMode::LOOP_PINGPONG: {
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loop_mode = "pingpong";
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} break;
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case AudioSample::LoopMode::LOOP_BACKWARD: {
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loop_mode = "backward";
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} break;
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}
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double length = p_sample->stream->get_length();
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Vector<AudioFrame> frames;
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int frames_total = mix_rate * length;
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{
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Ref<AudioStreamPlayback> stream_playback = p_sample->stream->instantiate_playback();
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frames.resize(frames_total);
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AudioFrame *frames_ptr = frames.ptrw();
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stream_playback->start();
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stream_playback->mix(frames_ptr, 1.0f, frames_total);
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}
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PackedFloat32Array data;
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data.resize(frames_total * 2);
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float *data_ptrw = data.ptrw();
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for (int i = 0; i < frames_total; i++) {
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data_ptrw[i] = frames[i].left;
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data_ptrw[i + frames_total] = frames[i].right;
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}
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godot_audio_sample_register_stream(
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itos(p_sample->stream->get_instance_id()).utf8().get_data(),
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data_ptrw,
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frames_total,
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loop_mode.utf8().get_data(),
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p_sample->loop_begin,
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p_sample->loop_end);
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}
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void AudioDriverWeb::unregister_sample(const Ref<AudioSample> &p_sample) {
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ERR_FAIL_COND_MSG(p_sample.is_null(), "Parameter p_sample is null.");
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ERR_FAIL_COND_MSG(p_sample->stream.is_null(), "Parameter p_sample->stream is null.");
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godot_audio_sample_unregister_stream(itos(p_sample->stream->get_instance_id()).utf8().get_data());
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}
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void AudioDriverWeb::start_sample_playback(const Ref<AudioSamplePlayback> &p_playback) {
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ERR_FAIL_COND_MSG(p_playback.is_null(), "Parameter p_playback is null.");
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ERR_FAIL_COND_MSG(p_playback->stream.is_null(), "Parameter p_playback->stream is null.");
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constexpr int real_max_channels = AudioServer::MAX_CHANNELS_PER_BUS * 2;
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PackedFloat32Array volume;
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volume.resize(real_max_channels);
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float *volume_ptrw = volume.ptrw();
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for (int i = 0; i < real_max_channels; i += 2) {
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if (p_playback->volume_vector.is_empty()) {
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volume_ptrw[i] = 0;
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volume_ptrw[i + 1] = 0;
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} else {
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const AudioFrame &frame = p_playback->volume_vector[i / 2];
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volume_ptrw[i] = frame.left;
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volume_ptrw[i + 1] = frame.right;
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}
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}
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godot_audio_sample_start(
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itos(p_playback->get_instance_id()).utf8().get_data(),
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itos(p_playback->stream->get_instance_id()).utf8().get_data(),
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AudioServer::get_singleton()->get_bus_index(p_playback->bus),
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p_playback->offset,
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volume_ptrw);
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}
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void AudioDriverWeb::stop_sample_playback(const Ref<AudioSamplePlayback> &p_playback) {
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ERR_FAIL_COND_MSG(p_playback.is_null(), "Parameter p_playback is null.");
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godot_audio_sample_stop(itos(p_playback->get_instance_id()).utf8().get_data());
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}
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void AudioDriverWeb::set_sample_playback_pause(const Ref<AudioSamplePlayback> &p_playback, bool p_paused) {
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ERR_FAIL_COND_MSG(p_playback.is_null(), "Parameter p_playback is null.");
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godot_audio_sample_set_pause(itos(p_playback->get_instance_id()).utf8().get_data(), p_paused);
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}
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bool AudioDriverWeb::is_sample_playback_active(const Ref<AudioSamplePlayback> &p_playback) {
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ERR_FAIL_COND_V_MSG(p_playback.is_null(), false, "Parameter p_playback is null.");
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return godot_audio_sample_is_active(itos(p_playback->get_instance_id()).utf8().get_data()) != 0;
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}
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void AudioDriverWeb::update_sample_playback_pitch_scale(const Ref<AudioSamplePlayback> &p_playback, float p_pitch_scale) {
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ERR_FAIL_COND_MSG(p_playback.is_null(), "Parameter p_playback is null.");
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godot_audio_sample_update_pitch_scale(
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itos(p_playback->get_instance_id()).utf8().get_data(),
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p_pitch_scale);
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}
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void AudioDriverWeb::set_sample_playback_bus_volumes_linear(const Ref<AudioSamplePlayback> &p_playback, const HashMap<StringName, Vector<AudioFrame>> &p_bus_volumes) {
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ERR_FAIL_COND_MSG(p_playback.is_null(), "Parameter p_playback is null.");
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constexpr int real_max_channels = AudioServer::MAX_CHANNELS_PER_BUS * 2;
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PackedInt32Array buses;
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buses.resize(p_bus_volumes.size());
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int32_t *buses_ptrw = buses.ptrw();
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PackedFloat32Array values;
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values.resize(p_bus_volumes.size() * AudioServer::MAX_CHANNELS_PER_BUS * 2);
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float *values_ptrw = values.ptrw();
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int idx = 0;
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for (KeyValue<StringName, Vector<AudioFrame>> pair : p_bus_volumes) {
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int bus_index = AudioServer::get_singleton()->get_bus_index(pair.key);
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buses_ptrw[idx] = bus_index;
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ERR_FAIL_COND(pair.value.size() != AudioServer::MAX_CHANNELS_PER_BUS);
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for (int i = 0; i < real_max_channels; i += 2) {
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const AudioFrame &frame = pair.value[i / 2];
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values_ptrw[(idx * real_max_channels) + i] = frame.left;
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values_ptrw[(idx * real_max_channels) + i + 1] = frame.right;
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}
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idx++;
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}
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godot_audio_sample_set_volumes_linear(
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itos(p_playback->get_instance_id()).utf8().get_data(),
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buses_ptrw,
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buses.size(),
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values_ptrw,
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values.size());
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}
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void AudioDriverWeb::set_sample_bus_count(int p_count) {
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godot_audio_sample_bus_set_count(p_count);
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}
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void AudioDriverWeb::remove_sample_bus(int p_index) {
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godot_audio_sample_bus_remove(p_index);
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}
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void AudioDriverWeb::add_sample_bus(int p_at_pos) {
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godot_audio_sample_bus_add(p_at_pos);
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}
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void AudioDriverWeb::move_sample_bus(int p_bus, int p_to_pos) {
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godot_audio_sample_bus_move(p_bus, p_to_pos);
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}
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void AudioDriverWeb::set_sample_bus_send(int p_bus, const StringName &p_send) {
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godot_audio_sample_bus_set_send(p_bus, AudioServer::get_singleton()->get_bus_index(p_send));
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}
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void AudioDriverWeb::set_sample_bus_volume_db(int p_bus, float p_volume_db) {
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godot_audio_sample_bus_set_volume_db(p_bus, p_volume_db);
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}
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void AudioDriverWeb::set_sample_bus_solo(int p_bus, bool p_enable) {
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godot_audio_sample_bus_set_solo(p_bus, p_enable);
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}
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void AudioDriverWeb::set_sample_bus_mute(int p_bus, bool p_enable) {
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godot_audio_sample_bus_set_mute(p_bus, p_enable);
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}
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#ifdef THREADS_ENABLED
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/// AudioWorkletNode implementation (threads)
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void AudioDriverWorklet::_audio_thread_func(void *p_data) {
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AudioDriverWorklet *driver = static_cast<AudioDriverWorklet *>(p_data);
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const int out_samples = memarr_len(driver->get_output_rb());
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const int in_samples = memarr_len(driver->get_input_rb());
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int wpos = 0;
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int to_write = out_samples;
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int rpos = 0;
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int to_read = 0;
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int32_t step = 0;
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while (!driver->quit) {
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if (to_read) {
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driver->lock();
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driver->_audio_driver_capture(rpos, to_read);
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godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_IN, -to_read);
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driver->unlock();
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rpos += to_read;
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if (rpos >= in_samples) {
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rpos -= in_samples;
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}
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}
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if (to_write) {
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driver->lock();
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driver->_audio_driver_process(wpos, to_write);
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godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_OUT, to_write);
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driver->unlock();
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wpos += to_write;
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if (wpos >= out_samples) {
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wpos -= out_samples;
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}
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}
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step = godot_audio_worklet_state_wait(driver->state, STATE_PROCESS, step, 1);
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to_write = out_samples - godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_OUT);
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to_read = godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_IN);
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}
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}
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Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) {
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if (!godot_audio_has_worklet()) {
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return ERR_UNAVAILABLE;
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}
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return (Error)godot_audio_worklet_create(p_channels);
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}
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void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
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godot_audio_worklet_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, state);
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thread.start(_audio_thread_func, this);
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}
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void AudioDriverWorklet::lock() {
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mutex.lock();
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}
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void AudioDriverWorklet::unlock() {
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mutex.unlock();
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}
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void AudioDriverWorklet::finish_driver() {
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quit = true; // Ask thread to quit.
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thread.wait_to_finish();
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}
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#else // No threads.
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/// AudioWorkletNode implementation (no threads)
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AudioDriverWorklet *AudioDriverWorklet::singleton = nullptr;
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Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) {
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if (!godot_audio_has_worklet()) {
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return ERR_UNAVAILABLE;
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}
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return (Error)godot_audio_worklet_create(p_channels);
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}
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void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
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_audio_driver_process();
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godot_audio_worklet_start_no_threads(p_out_buf, p_out_buf_size, &_process_callback, p_in_buf, p_in_buf_size, &_capture_callback);
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}
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void AudioDriverWorklet::_process_callback(int p_pos, int p_samples) {
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AudioDriverWorklet *driver = AudioDriverWorklet::get_singleton();
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driver->_audio_driver_process(p_pos, p_samples);
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}
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void AudioDriverWorklet::_capture_callback(int p_pos, int p_samples) {
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AudioDriverWorklet *driver = AudioDriverWorklet::get_singleton();
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driver->_audio_driver_capture(p_pos, p_samples);
|
|
}
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|
|
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/// ScriptProcessorNode implementation
|
|
AudioDriverScriptProcessor *AudioDriverScriptProcessor::singleton = nullptr;
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|
|
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void AudioDriverScriptProcessor::_process_callback() {
|
|
AudioDriverScriptProcessor::get_singleton()->_audio_driver_capture();
|
|
AudioDriverScriptProcessor::get_singleton()->_audio_driver_process();
|
|
}
|
|
|
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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);
|
|
}
|
|
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|
#endif // THREADS_ENABLED
|