mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-24 20:57:18 +01:00
489 lines
20 KiB
JavaScript
489 lines
20 KiB
JavaScript
/*************************************************************************/
|
|
/* library_pandemonium_audio.js */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 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. */
|
|
/*************************************************************************/
|
|
|
|
const PandemoniumAudio = {
|
|
$PandemoniumAudio__deps: ['$PandemoniumRuntime', '$PandemoniumOS'],
|
|
$PandemoniumAudio: {
|
|
ctx: null,
|
|
input: null,
|
|
driver: null,
|
|
interval: 0,
|
|
|
|
init: function(mix_rate, latency, onstatechange, onlatencyupdate) {
|
|
const opts = {};
|
|
// If mix_rate is 0, let the browser choose.
|
|
if (mix_rate) {
|
|
opts['sampleRate'] = mix_rate;
|
|
}
|
|
// Do not specify, leave 'interactive' for good performance.
|
|
// opts['latencyHint'] = latency / 1000;
|
|
const ctx = new(window.AudioContext || window.webkitAudioContext)(opts);
|
|
PandemoniumAudio.ctx = ctx;
|
|
ctx.onstatechange = function() {
|
|
let state = 0;
|
|
switch (ctx.state) {
|
|
case 'suspended':
|
|
state = 0;
|
|
break;
|
|
case 'running':
|
|
state = 1;
|
|
break;
|
|
case 'closed':
|
|
state = 2;
|
|
break;
|
|
|
|
// no default
|
|
}
|
|
onstatechange(state);
|
|
};
|
|
ctx.onstatechange(); // Immediately notify state.
|
|
// Update computed latency
|
|
PandemoniumAudio.interval = setInterval(function() {
|
|
let computed_latency = 0;
|
|
if (ctx.baseLatency) {
|
|
computed_latency += PandemoniumAudio.ctx.baseLatency;
|
|
}
|
|
if (ctx.outputLatency) {
|
|
computed_latency += PandemoniumAudio.ctx.outputLatency;
|
|
}
|
|
onlatencyupdate(computed_latency);
|
|
}, 1000);
|
|
PandemoniumOS.atexit(PandemoniumAudio.close_async);
|
|
return ctx.destination.channelCount;
|
|
},
|
|
|
|
create_input: function(callback) {
|
|
if (PandemoniumAudio.input) {
|
|
return 0; // Already started.
|
|
}
|
|
|
|
function gotMediaInput(stream) {
|
|
try {
|
|
PandemoniumAudio.input = PandemoniumAudio.ctx.createMediaStreamSource(stream);
|
|
callback(PandemoniumAudio.input);
|
|
} catch (e) {
|
|
PandemoniumRuntime.error('Failed creaating input.', e);
|
|
}
|
|
}
|
|
if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
|
|
navigator.mediaDevices.getUserMedia({
|
|
'audio': true,
|
|
}).then(gotMediaInput, function(e) {
|
|
PandemoniumRuntime.error('Error getting user media.', e);
|
|
});
|
|
} else {
|
|
if (!navigator.getUserMedia) {
|
|
navigator.getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
|
|
}
|
|
if (!navigator.getUserMedia) {
|
|
PandemoniumRuntime.error('getUserMedia not available.');
|
|
return 1;
|
|
}
|
|
navigator.getUserMedia({
|
|
'audio': true,
|
|
}, gotMediaInput, function(e) {
|
|
PandemoniumRuntime.print(e);
|
|
});
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
close_async: function(resolve, reject) {
|
|
const ctx = PandemoniumAudio.ctx;
|
|
PandemoniumAudio.ctx = null;
|
|
// Audio was not initialized.
|
|
if (!ctx) {
|
|
resolve();
|
|
return;
|
|
}
|
|
// Remove latency callback
|
|
if (PandemoniumAudio.interval) {
|
|
clearInterval(PandemoniumAudio.interval);
|
|
PandemoniumAudio.interval = 0;
|
|
}
|
|
// Disconnect input, if it was started.
|
|
if (PandemoniumAudio.input) {
|
|
PandemoniumAudio.input.disconnect();
|
|
PandemoniumAudio.input = null;
|
|
}
|
|
// Disconnect output
|
|
let closed = Promise.resolve();
|
|
if (PandemoniumAudio.driver) {
|
|
closed = PandemoniumAudio.driver.close();
|
|
}
|
|
closed.then(function() {
|
|
return ctx.close();
|
|
}).then(function() {
|
|
ctx.onstatechange = null;
|
|
resolve();
|
|
}).catch(function(e) {
|
|
ctx.onstatechange = null;
|
|
PandemoniumRuntime.error('Error closing AudioContext', e);
|
|
resolve();
|
|
});
|
|
},
|
|
},
|
|
|
|
pandemonium_audio_is_available__sig: 'i',
|
|
pandemonium_audio_is_available__proxy: 'sync',
|
|
pandemonium_audio_is_available: function() {
|
|
if (!(window.AudioContext || window.webkitAudioContext)) {
|
|
return 0;
|
|
}
|
|
return 1;
|
|
},
|
|
|
|
pandemonium_audio_has_worklet__sig: 'i',
|
|
pandemonium_audio_has_worklet: function() {
|
|
return (PandemoniumAudio.ctx && PandemoniumAudio.ctx.audioWorklet) ? 1 : 0;
|
|
},
|
|
|
|
pandemonium_audio_has_script_processor__sig: 'i',
|
|
pandemonium_audio_has_script_processor: function() {
|
|
return (PandemoniumAudio.ctx && PandemoniumAudio.ctx.createScriptProcessor) ? 1 : 0;
|
|
},
|
|
|
|
pandemonium_audio_init__sig: 'iiiii',
|
|
pandemonium_audio_init: function(p_mix_rate, p_latency, p_state_change, p_latency_update) {
|
|
const statechange = PandemoniumRuntime.get_func(p_state_change);
|
|
const latencyupdate = PandemoniumRuntime.get_func(p_latency_update);
|
|
const mix_rate = PandemoniumRuntime.getHeapValue(p_mix_rate, 'i32');
|
|
const channels = PandemoniumAudio.init(mix_rate, p_latency, statechange, latencyupdate);
|
|
PandemoniumRuntime.setHeapValue(p_mix_rate, PandemoniumAudio.ctx.sampleRate, 'i32');
|
|
return channels;
|
|
},
|
|
|
|
pandemonium_audio_resume__sig: 'v',
|
|
pandemonium_audio_resume: function() {
|
|
if (PandemoniumAudio.ctx && PandemoniumAudio.ctx.state !== 'running') {
|
|
PandemoniumAudio.ctx.resume();
|
|
}
|
|
},
|
|
|
|
pandemonium_audio_capture_start__proxy: 'sync',
|
|
pandemonium_audio_capture_start__sig: 'i',
|
|
pandemonium_audio_capture_start: function() {
|
|
return PandemoniumAudio.create_input(function(input) {
|
|
input.connect(PandemoniumAudio.driver.get_node());
|
|
});
|
|
},
|
|
|
|
pandemonium_audio_capture_stop__proxy: 'sync',
|
|
pandemonium_audio_capture_stop__sig: 'v',
|
|
pandemonium_audio_capture_stop: function() {
|
|
if (PandemoniumAudio.input) {
|
|
const tracks = PandemoniumAudio.input['mediaStream']['getTracks']();
|
|
for (let i = 0; i < tracks.length; i++) {
|
|
tracks[i]['stop']();
|
|
}
|
|
PandemoniumAudio.input.disconnect();
|
|
PandemoniumAudio.input = null;
|
|
}
|
|
},
|
|
};
|
|
|
|
autoAddDeps(PandemoniumAudio, '$PandemoniumAudio');
|
|
mergeInto(LibraryManager.library, PandemoniumAudio);
|
|
|
|
/**
|
|
* The AudioWorklet API driver, used when threads are available.
|
|
*/
|
|
const PandemoniumAudioWorklet = {
|
|
$PandemoniumAudioWorklet__deps: ['$PandemoniumAudio', '$PandemoniumConfig'],
|
|
$PandemoniumAudioWorklet: {
|
|
promise: null,
|
|
worklet: null,
|
|
ring_buffer: null,
|
|
|
|
create: function(channels) {
|
|
const path = PandemoniumConfig.locate_file('pandemonium.audio.worklet.js');
|
|
PandemoniumAudioWorklet.promise = PandemoniumAudio.ctx.audioWorklet.addModule(path).then(function() {
|
|
PandemoniumAudioWorklet.worklet = new AudioWorkletNode(
|
|
PandemoniumAudio.ctx,
|
|
'pandemonium-processor', {
|
|
'outputChannelCount': [channels],
|
|
}
|
|
);
|
|
return Promise.resolve();
|
|
});
|
|
PandemoniumAudio.driver = PandemoniumAudioWorklet;
|
|
},
|
|
|
|
start: function(in_buf, out_buf, state) {
|
|
PandemoniumAudioWorklet.promise.then(function() {
|
|
const node = PandemoniumAudioWorklet.worklet;
|
|
node.connect(PandemoniumAudio.ctx.destination);
|
|
node.port.postMessage({
|
|
'cmd': 'start',
|
|
'data': [state, in_buf, out_buf],
|
|
});
|
|
node.port.onmessage = function(event) {
|
|
PandemoniumRuntime.error(event.data);
|
|
};
|
|
});
|
|
},
|
|
|
|
start_no_threads: function(p_out_buf, p_out_size, out_callback, p_in_buf, p_in_size, in_callback) {
|
|
function RingBuffer() {
|
|
let wpos = 0;
|
|
let rpos = 0;
|
|
let pending_samples = 0;
|
|
const wbuf = new Float32Array(p_out_size);
|
|
|
|
function send(port) {
|
|
if (pending_samples === 0) {
|
|
return;
|
|
}
|
|
const buffer = PandemoniumRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
|
|
const size = buffer.length;
|
|
const tot_sent = pending_samples;
|
|
out_callback(wpos, pending_samples);
|
|
if (wpos + pending_samples >= size) {
|
|
const high = size - wpos;
|
|
wbuf.set(buffer.subarray(wpos, size));
|
|
pending_samples -= high;
|
|
wpos = 0;
|
|
}
|
|
if (pending_samples > 0) {
|
|
wbuf.set(buffer.subarray(wpos, wpos + pending_samples), tot_sent - pending_samples);
|
|
}
|
|
port.postMessage({
|
|
'cmd': 'chunk',
|
|
'data': wbuf.subarray(0, tot_sent)
|
|
});
|
|
wpos += pending_samples;
|
|
pending_samples = 0;
|
|
}
|
|
this.receive = function(recv_buf) {
|
|
const buffer = PandemoniumRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
|
|
const from = rpos;
|
|
let to_write = recv_buf.length;
|
|
let high = 0;
|
|
if (rpos + to_write >= p_in_size) {
|
|
high = p_in_size - rpos;
|
|
buffer.set(recv_buf.subarray(0, high), rpos);
|
|
to_write -= high;
|
|
rpos = 0;
|
|
}
|
|
if (to_write) {
|
|
buffer.set(recv_buf.subarray(high, to_write), rpos);
|
|
}
|
|
in_callback(from, recv_buf.length);
|
|
rpos += to_write;
|
|
};
|
|
this.consumed = function(size, port) {
|
|
pending_samples += size;
|
|
send(port);
|
|
};
|
|
}
|
|
PandemoniumAudioWorklet.ring_buffer = new RingBuffer();
|
|
PandemoniumAudioWorklet.promise.then(function() {
|
|
const node = PandemoniumAudioWorklet.worklet;
|
|
const buffer = PandemoniumRuntime.heapSlice(HEAPF32, p_out_buf, p_out_size);
|
|
node.connect(PandemoniumAudio.ctx.destination);
|
|
node.port.postMessage({
|
|
'cmd': 'start_nothreads',
|
|
'data': [buffer, p_in_size],
|
|
});
|
|
node.port.onmessage = function(event) {
|
|
if (!PandemoniumAudioWorklet.worklet) {
|
|
return;
|
|
}
|
|
if (event.data['cmd'] === 'read') {
|
|
const read = event.data['data'];
|
|
PandemoniumAudioWorklet.ring_buffer.consumed(read, PandemoniumAudioWorklet.worklet.port);
|
|
} else if (event.data['cmd'] === 'input') {
|
|
const buf = event.data['data'];
|
|
if (buf.length > p_in_size) {
|
|
PandemoniumRuntime.error('Input chunk is too big');
|
|
return;
|
|
}
|
|
PandemoniumAudioWorklet.ring_buffer.receive(buf);
|
|
} else {
|
|
PandemoniumRuntime.error(event.data);
|
|
}
|
|
};
|
|
});
|
|
},
|
|
|
|
get_node: function() {
|
|
return PandemoniumAudioWorklet.worklet;
|
|
},
|
|
|
|
close: function() {
|
|
return new Promise(function(resolve, reject) {
|
|
if (PandemoniumAudioWorklet.promise === null) {
|
|
return;
|
|
}
|
|
PandemoniumAudioWorklet.promise.then(function() {
|
|
PandemoniumAudioWorklet.worklet.port.postMessage({
|
|
'cmd': 'stop',
|
|
'data': null,
|
|
});
|
|
PandemoniumAudioWorklet.worklet.disconnect();
|
|
PandemoniumAudioWorklet.worklet = null;
|
|
PandemoniumAudioWorklet.promise = null;
|
|
resolve();
|
|
}).catch(function(err) {
|
|
/* aborted? */
|
|
});
|
|
});
|
|
},
|
|
},
|
|
|
|
pandemonium_audio_worklet_create__sig: 'ii',
|
|
pandemonium_audio_worklet_create: function(channels) {
|
|
try {
|
|
PandemoniumAudioWorklet.create(channels);
|
|
} catch (e) {
|
|
PandemoniumRuntime.error('Error starting AudioDriverWorklet', e);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
pandemonium_audio_worklet_start__sig: 'viiiii',
|
|
pandemonium_audio_worklet_start: function(p_in_buf, p_in_size, p_out_buf, p_out_size, p_state) {
|
|
const out_buffer = PandemoniumRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
|
|
const in_buffer = PandemoniumRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
|
|
const state = PandemoniumRuntime.heapSub(HEAP32, p_state, 4);
|
|
PandemoniumAudioWorklet.start(in_buffer, out_buffer, state);
|
|
},
|
|
|
|
pandemonium_audio_worklet_start_no_threads__sig: 'viiiiii',
|
|
pandemonium_audio_worklet_start_no_threads: function(p_out_buf, p_out_size, p_out_callback, p_in_buf, p_in_size, p_in_callback) {
|
|
const out_callback = PandemoniumRuntime.get_func(p_out_callback);
|
|
const in_callback = PandemoniumRuntime.get_func(p_in_callback);
|
|
PandemoniumAudioWorklet.start_no_threads(p_out_buf, p_out_size, out_callback, p_in_buf, p_in_size, in_callback);
|
|
},
|
|
|
|
pandemonium_audio_worklet_state_wait__sig: 'iiii',
|
|
pandemonium_audio_worklet_state_wait: function(p_state, p_idx, p_expected, p_timeout) {
|
|
Atomics.wait(HEAP32, (p_state >> 2) + p_idx, p_expected, p_timeout);
|
|
return Atomics.load(HEAP32, (p_state >> 2) + p_idx);
|
|
},
|
|
|
|
pandemonium_audio_worklet_state_add__sig: 'iiii',
|
|
pandemonium_audio_worklet_state_add: function(p_state, p_idx, p_value) {
|
|
return Atomics.add(HEAP32, (p_state >> 2) + p_idx, p_value);
|
|
},
|
|
|
|
pandemonium_audio_worklet_state_get__sig: 'iii',
|
|
pandemonium_audio_worklet_state_get: function(p_state, p_idx) {
|
|
return Atomics.load(HEAP32, (p_state >> 2) + p_idx);
|
|
},
|
|
};
|
|
|
|
autoAddDeps(PandemoniumAudioWorklet, '$PandemoniumAudioWorklet');
|
|
mergeInto(LibraryManager.library, PandemoniumAudioWorklet);
|
|
|
|
/*
|
|
* The deprecated ScriptProcessorNode API, used when threads are disabled.
|
|
*/
|
|
const PandemoniumAudioScript = {
|
|
$PandemoniumAudioScript__deps: ['$PandemoniumAudio'],
|
|
$PandemoniumAudioScript: {
|
|
script: null,
|
|
|
|
create: function(buffer_length, channel_count) {
|
|
PandemoniumAudioScript.script = PandemoniumAudio.ctx.createScriptProcessor(buffer_length, 2, channel_count);
|
|
PandemoniumAudio.driver = PandemoniumAudioScript;
|
|
return PandemoniumAudioScript.script.bufferSize;
|
|
},
|
|
|
|
start: function(p_in_buf, p_in_size, p_out_buf, p_out_size, onprocess) {
|
|
PandemoniumAudioScript.script.onaudioprocess = function(event) {
|
|
// Read input
|
|
const inb = PandemoniumRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
|
|
const input = event.inputBuffer;
|
|
if (PandemoniumAudio.input) {
|
|
const inlen = input.getChannelData(0).length;
|
|
for (let ch = 0; ch < 2; ch++) {
|
|
const data = input.getChannelData(ch);
|
|
for (let s = 0; s < inlen; s++) {
|
|
inb[s * 2 + ch] = data[s];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Let Pandemonium process the input/output.
|
|
onprocess();
|
|
|
|
// Write the output.
|
|
const outb = PandemoniumRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
|
|
const output = event.outputBuffer;
|
|
const channels = output.numberOfChannels;
|
|
for (let ch = 0; ch < channels; ch++) {
|
|
const data = output.getChannelData(ch);
|
|
// Loop through samples and assign computed values.
|
|
for (let sample = 0; sample < data.length; sample++) {
|
|
data[sample] = outb[sample * channels + ch];
|
|
}
|
|
}
|
|
};
|
|
PandemoniumAudioScript.script.connect(PandemoniumAudio.ctx.destination);
|
|
},
|
|
|
|
get_node: function() {
|
|
return PandemoniumAudioScript.script;
|
|
},
|
|
|
|
close: function() {
|
|
return new Promise(function(resolve, reject) {
|
|
PandemoniumAudioScript.script.disconnect();
|
|
PandemoniumAudioScript.script.onaudioprocess = null;
|
|
PandemoniumAudioScript.script = null;
|
|
resolve();
|
|
});
|
|
},
|
|
},
|
|
|
|
pandemonium_audio_script_create__sig: 'iii',
|
|
pandemonium_audio_script_create: function(buffer_length, channel_count) {
|
|
const buf_len = PandemoniumRuntime.getHeapValue(buffer_length, 'i32');
|
|
try {
|
|
const out_len = PandemoniumAudioScript.create(buf_len, channel_count);
|
|
PandemoniumRuntime.setHeapValue(buffer_length, out_len, 'i32');
|
|
} catch (e) {
|
|
PandemoniumRuntime.error('Error starting AudioDriverScriptProcessor', e);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
pandemonium_audio_script_start__sig: 'viiiii',
|
|
pandemonium_audio_script_start: function(p_in_buf, p_in_size, p_out_buf, p_out_size, p_cb) {
|
|
const onprocess = PandemoniumRuntime.get_func(p_cb);
|
|
PandemoniumAudioScript.start(p_in_buf, p_in_size, p_out_buf, p_out_size, onprocess);
|
|
},
|
|
};
|
|
|
|
autoAddDeps(PandemoniumAudioScript, '$PandemoniumAudioScript');
|
|
mergeInto(LibraryManager.library, PandemoniumAudioScript); |