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Merge pull request #42505 from Faless/js/4.0_audio_threads 

[HTML5] Move audio processing to thread when threads are enabled.
This commit is contained in:
Rémi Verschelde 2020-10-02 16:25:10 +02:00 committed by GitHub
parent 0d07a935e9 a618535628
commit 1ff3e60ee0
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 318 additions and 185 deletions
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1
platform/javascript/SCsub
View File

@ -19,6 +19,7 @@ build = env.add_program(build_targets, javascript_files)
js_libraries = [
"native/http_request.js",
"native/library_godot_audio.js",
]
for lib in js_libraries:
env.Append(LINKFLAGS=["--js-library", env.File(lib).path])

248
platform/javascript/audio_driver_javascript.cpp
View File

@ -31,34 +31,57 @@
#include "audio_driver_javascript.h"
#include "core/project_settings.h"
#include "godot_audio.h"
#include <emscripten.h>
AudioDriverJavaScript *AudioDriverJavaScript::singleton = nullptr;
bool AudioDriverJavaScript::is_available() {
return EM_ASM_INT({
if (!(window.AudioContext || window.webkitAudioContext)) {
return 0;
}
return 1;
}) != 0;
return godot_audio_is_available() != 0;
}
const char *AudioDriverJavaScript::get_name() const {
return "JavaScript";
}
extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_js_mix() {
AudioDriverJavaScript::singleton->mix_to_js();
#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();
}
}
#endif
extern "C" EMSCRIPTEN_KEEPALIVE void audio_driver_process_start() {
#ifndef NO_THREADS
AudioDriverJavaScript::singleton->lock();
#else
AudioDriverJavaScript::singleton->_js_driver_process();
#endif
}
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);
}
void AudioDriverJavaScript::mix_to_js() {
int channel_count = get_total_channels_by_speaker_mode(get_speaker_mode());
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);
@ -73,37 +96,12 @@ void AudioDriverJavaScript::process_capture(float sample) {
}
Error AudioDriverJavaScript::init() {
int mix_rate = GLOBAL_GET("audio/mix_rate");
mix_rate = GLOBAL_GET("audio/mix_rate");
int latency = GLOBAL_GET("audio/output_latency");
/* clang-format off */
_driver_id = EM_ASM_INT({
const MIX_RATE = $0;
const LATENCY = $1 / 1000;
return Module.IDHandler.add({
'context': new (window.AudioContext || window.webkitAudioContext)({ sampleRate: MIX_RATE, latencyHint: LATENCY}),
'input': null,
'stream': null,
'script': null
});
}, mix_rate, latency);
/* clang-format on */
int channel_count = get_total_channels_by_speaker_mode(get_speaker_mode());
channel_count = godot_audio_init(mix_rate, latency);
buffer_length = closest_power_of_2((latency * mix_rate / 1000) * channel_count);
/* clang-format off */
buffer_length = EM_ASM_INT({
var ref = Module.IDHandler.get($0);
const ctx = ref['context'];
const BUFFER_LENGTH = $1;
const CHANNEL_COUNT = $2;
var script = ctx.createScriptProcessor(BUFFER_LENGTH, 2, CHANNEL_COUNT);
script.connect(ctx.destination);
ref['script'] = script;
return script.bufferSize;
}, _driver_id, buffer_length, channel_count);
/* clang-format on */
buffer_length = godot_audio_create_processor(buffer_length, channel_count);
if (!buffer_length) {
return FAILED;
}
@ -114,134 +112,60 @@ Error AudioDriverJavaScript::init() {
internal_buffer = memnew_arr(float, buffer_length *channel_count);
}
return internal_buffer ? OK : ERR_OUT_OF_MEMORY;
if (!internal_buffer) {
return ERR_OUT_OF_MEMORY;
}
return OK;
}
void AudioDriverJavaScript::start() {
/* clang-format off */
EM_ASM({
const ref = Module.IDHandler.get($0);
var INTERNAL_BUFFER_PTR = $1;
var audioDriverMixFunction = cwrap('audio_driver_js_mix');
var audioDriverProcessCapture = cwrap('audio_driver_process_capture', null, ['number']);
ref['script'].onaudioprocess = function(audioProcessingEvent) {
audioDriverMixFunction();
var input = audioProcessingEvent.inputBuffer;
var output = audioProcessingEvent.outputBuffer;
var internalBuffer = HEAPF32.subarray(
INTERNAL_BUFFER_PTR / HEAPF32.BYTES_PER_ELEMENT,
INTERNAL_BUFFER_PTR / HEAPF32.BYTES_PER_ELEMENT + output.length * output.numberOfChannels);
for (var channel = 0; channel < output.numberOfChannels; channel++) {
var outputData = output.getChannelData(channel);
// Loop through samples.
for (var sample = 0; sample < outputData.length; sample++) {
outputData[sample] = internalBuffer[sample * output.numberOfChannels + channel];
}
}
if (ref['input']) {
var inputDataL = input.getChannelData(0);
var inputDataR = input.getChannelData(1);
for (var i = 0; i < inputDataL.length; i++) {
audioDriverProcessCapture(inputDataL[i]);
audioDriverProcessCapture(inputDataR[i]);
}
}
};
}, _driver_id, internal_buffer);
/* clang-format on */
#ifndef NO_THREADS
thread = Thread::create(_audio_thread_func, this);
#endif
godot_audio_start(internal_buffer);
}
void AudioDriverJavaScript::resume() {
/* clang-format off */
EM_ASM({
const ref = Module.IDHandler.get($0);
if (ref && ref['context'] && ref['context'].resume)
ref['context'].resume();
}, _driver_id);
/* clang-format on */
godot_audio_resume();
}
float AudioDriverJavaScript::get_latency() {
/* clang-format off */
return EM_ASM_DOUBLE({
const ref = Module.IDHandler.get($0);
var latency = 0;
if (ref && ref['context']) {
const ctx = ref['context'];
if (ctx.baseLatency) {
latency += ctx.baseLatency;
}
if (ctx.outputLatency) {
latency += ctx.outputLatency;
}
}
return latency;
}, _driver_id);
/* clang-format on */
return godot_audio_get_latency();
}
int AudioDriverJavaScript::get_mix_rate() const {
/* clang-format off */
return EM_ASM_INT({
const ref = Module.IDHandler.get($0);
return ref && ref['context'] ? ref['context'].sampleRate : 0;
}, _driver_id);
/* clang-format on */
return mix_rate;
}
AudioDriver::SpeakerMode AudioDriverJavaScript::get_speaker_mode() const {
/* clang-format off */
return get_speaker_mode_by_total_channels(EM_ASM_INT({
const ref = Module.IDHandler.get($0);
return ref && ref['context'] ? ref['context'].destination.channelCount : 0;
}, _driver_id));
/* clang-format on */
return get_speaker_mode_by_total_channels(channel_count);
}
// No locking, as threads are not supported.
void AudioDriverJavaScript::lock() {
#ifndef NO_THREADS
mutex.lock();
#endif
}
void AudioDriverJavaScript::unlock() {
#ifndef NO_THREADS
mutex.unlock();
#endif
}
void AudioDriverJavaScript::finish_async() {
// Close the context, add the operation to the async_finish list in module.
int id = _driver_id;
_driver_id = 0;
/* clang-format off */
EM_ASM({
const id = $0;
var ref = Module.IDHandler.get(id);
Module.async_finish.push(new Promise(function(accept, reject) {
if (!ref) {
console.log("Ref not found!", id, Module.IDHandler);
setTimeout(accept, 0);
} else {
Module.IDHandler.remove(id);
const context = ref['context'];
// Disconnect script and input.
ref['script'].disconnect();
if (ref['input'])
ref['input'].disconnect();
ref = null;
context.close().then(function() {
accept();
}).catch(function(e) {
accept();
});
}
}));
}, id);
/* clang-format on */
#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;
@ -249,56 +173,14 @@ void AudioDriverJavaScript::finish() {
}
Error AudioDriverJavaScript::capture_start() {
godot_audio_capture_stop();
input_buffer_init(buffer_length);
/* clang-format off */
EM_ASM({
function gotMediaInput(stream) {
var ref = Module.IDHandler.get($0);
ref['stream'] = stream;
ref['input'] = ref['context'].createMediaStreamSource(stream);
ref['input'].connect(ref['script']);
}
function gotMediaInputError(e) {
out(e);
}
if (navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({"audio": true}).then(gotMediaInput, gotMediaInputError);
} else {
if (!navigator.getUserMedia)
navigator.getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
navigator.getUserMedia({"audio": true}, gotMediaInput, gotMediaInputError);
}
}, _driver_id);
/* clang-format on */
godot_audio_capture_start();
return OK;
}
Error AudioDriverJavaScript::capture_stop() {
/* clang-format off */
EM_ASM({
var ref = Module.IDHandler.get($0);
if (ref['stream']) {
const tracks = ref['stream'].getTracks();
for (var i = 0; i < tracks.length; i++) {
tracks[i].stop();
}
ref['stream'] = null;
}
if (ref['input']) {
ref['input'].disconnect();
ref['input'] = null;
}
}, _driver_id);
/* clang-format on */
input_buffer.clear();
return OK;
}

19
platform/javascript/audio_driver_javascript.h
View File

@ -33,15 +33,30 @@
#include "servers/audio_server.h"
#include "core/os/mutex.h"
#include "core/os/thread.h"
class AudioDriverJavaScript : public AudioDriver {
private:
float *internal_buffer = nullptr;
int _driver_id = 0;
int buffer_length = 0;
int mix_rate = 0;
int channel_count = 0;
public:
#ifndef NO_THREADS
Mutex mutex;
Thread *thread = nullptr;
bool quit = false;
bool needs_process = true;
static void _audio_thread_func(void *p_data);
#endif
void _js_driver_process();
static bool is_available();
void mix_to_js();
void process_capture(float sample);
static AudioDriverJavaScript *singleton;

1
platform/javascript/detect.py
View File

@ -139,6 +139,7 @@ def configure(env):
env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=4"])
env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
env.extra_suffix = ".threads" + env.extra_suffix
else:
env.Append(CPPDEFINES=["NO_THREADS"])

3
platform/javascript/export/export.cpp
View File

@ -124,6 +124,9 @@ public:
String s = "HTTP/1.1 200 OK\r\n";
s += "Connection: Close\r\n";
s += "Content-Type: " + ctype + "\r\n";
s += "Access-Control-Allow-Origin: *\r\n";
s += "Cross-Origin-Opener-Policy: same-origin\r\n";
s += "Cross-Origin-Embedder-Policy: require-corp\r\n";
s += "\r\n";
CharString cs = s.utf8();
Error err = connection->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);

58
platform/javascript/godot_audio.h Normal file
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@ -0,0 +1,58 @@
/*************************************************************************/
/* godot_audio.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 GODOT_AUDIO_H
#define GODOT_AUDIO_H
#ifdef __cplusplus
extern "C" {
#endif
#include "stddef.h"
extern int godot_audio_is_available();
extern int godot_audio_init(int p_mix_rate, int p_latency);
extern int godot_audio_create_processor(int p_buffer_length, int p_channel_count);
extern void godot_audio_start(float *r_buffer_ptr);
extern void godot_audio_resume();
extern void godot_audio_finish_async();
extern float godot_audio_get_latency();
extern void godot_audio_capture_start();
extern void godot_audio_capture_stop();
#ifdef __cplusplus
}
#endif
#endif /* GODOT_AUDIO_H */

173
platform/javascript/native/library_godot_audio.js Normal file
View File

@ -0,0 +1,173 @@
/*************************************************************************/
/* library_godot_audio.js */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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. */
/*************************************************************************/
var GodotAudio = {
$GodotAudio: {
ctx: null,
input: null,
script: null,
},
godot_audio_is_available__proxy: 'sync',
godot_audio_is_available: function () {
if (!(window.AudioContext || window.webkitAudioContext)) {
return 0;
}
return 1;
},
godot_audio_init: function(mix_rate, latency) {
GodotAudio.ctx = new (window.AudioContext || window.webkitAudioContext)({
sampleRate: mix_rate,
latencyHint: latency
});
return GodotAudio.ctx.destination.channelCount;
},
godot_audio_create_processor: function(buffer_length, channel_count) {
GodotAudio.script = GodotAudio.ctx.createScriptProcessor(buffer_length, 2, channel_count);
GodotAudio.script.connect(GodotAudio.ctx.destination);
return GodotAudio.script.bufferSize;
},
godot_audio_start: function(buffer_ptr) {
var audioDriverProcessStart = cwrap('audio_driver_process_start');
var audioDriverProcessEnd = cwrap('audio_driver_process_end');
var audioDriverProcessCapture = cwrap('audio_driver_process_capture', null, ['number']);
GodotAudio.script.onaudioprocess = function(audioProcessingEvent) {
audioDriverProcessStart();
var input = audioProcessingEvent.inputBuffer;
var output = audioProcessingEvent.outputBuffer;
var internalBuffer = HEAPF32.subarray(
buffer_ptr / HEAPF32.BYTES_PER_ELEMENT,
buffer_ptr / HEAPF32.BYTES_PER_ELEMENT + output.length * output.numberOfChannels);
for (var channel = 0; channel < output.numberOfChannels; channel++) {
var outputData = output.getChannelData(channel);
// Loop through samples.
for (var sample = 0; sample < outputData.length; sample++) {
outputData[sample] = internalBuffer[sample * output.numberOfChannels + channel];
}
}
if (GodotAudio.input) {
var inputDataL = input.getChannelData(0);
var inputDataR = input.getChannelData(1);
for (var i = 0; i < inputDataL.length; i++) {
audioDriverProcessCapture(inputDataL[i]);
audioDriverProcessCapture(inputDataR[i]);
}
}
audioDriverProcessEnd();
};
},
godot_audio_resume: function() {
if (GodotAudio.ctx && GodotAudio.ctx.state != 'running') {
GodotAudio.ctx.resume();
}
},
godot_audio_finish_async: function() {
Module.async_finish.push(new Promise(function(accept, reject) {
if (!GodotAudio.ctx) {
setTimeout(accept, 0);
} else {
if (GodotAudio.script) {
GodotAudio.script.disconnect();
GodotAudio.script = null;
}
if (GodotAudio.input) {
GodotAudio.input.disconnect();
GodotAudio.input = null;
}
GodotAudio.ctx.close().then(function() {
accept();
}).catch(function(e) {
accept();
});
GodotAudio.ctx = null;
}
}));
},
godot_audio_get_latency__proxy: 'sync',
godot_audio_get_latency: function() {
var latency = 0;
if (GodotAudio.ctx) {
if (GodotAudio.ctx.baseLatency) {
latency += GodotAudio.ctx.baseLatency;
}
if (GodotAudio.ctx.outputLatency) {
latency += GodotAudio.ctx.outputLatency;
}
}
return latency;
},
godot_audio_capture_start__proxy: 'sync',
godot_audio_capture_start: function() {
if (GodotAudio.input) {
return; // Already started.
}
function gotMediaInput(stream) {
GodotAudio.input = GodotAudio.ctx.createMediaStreamSource(stream);
GodotAudio.input.connect(GodotAudio.script);
}
function gotMediaInputError(e) {
out(e);
}
if (navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({"audio": true}).then(gotMediaInput, gotMediaInputError);
} else {
if (!navigator.getUserMedia)
navigator.getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
navigator.getUserMedia({"audio": true}, gotMediaInput, gotMediaInputError);
}
},
godot_audio_capture_stop__proxy: 'sync',
godot_audio_capture_stop: function() {
if (GodotAudio.input) {
const tracks = GodotAudio.input.mediaStream.getTracks();
for (var i = 0; i < tracks.length; i++) {
tracks[i].stop();
}
GodotAudio.input.disconnect();
GodotAudio.input = null;
}
},
};
autoAddDeps(GodotAudio, "$GodotAudio");
mergeInto(LibraryManager.library, GodotAudio);