diff options
Diffstat (limited to 'platform/javascript/js/libs/library_godot_audio.js')
| -rw-r--r-- | platform/javascript/js/libs/library_godot_audio.js | 137 |
1 files changed, 128 insertions, 9 deletions
diff --git a/platform/javascript/js/libs/library_godot_audio.js b/platform/javascript/js/libs/library_godot_audio.js index 45c3a3fe2e..6cbb0567f4 100644 --- a/platform/javascript/js/libs/library_godot_audio.js +++ b/platform/javascript/js/libs/library_godot_audio.js @@ -37,10 +37,14 @@ const GodotAudio = { interval: 0, init: function (mix_rate, latency, onstatechange, onlatencyupdate) { - const ctx = new (window.AudioContext || window.webkitAudioContext)({ - sampleRate: mix_rate, - // latencyHint: latency / 1000 // Do not specify, leave 'interactive' for good performance. - }); + 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); GodotAudio.ctx = ctx; ctx.onstatechange = function () { let state = 0; @@ -155,11 +159,24 @@ const GodotAudio = { return 1; }, + godot_audio_has_worklet__sig: 'i', + godot_audio_has_worklet: function () { + return (GodotAudio.ctx && GodotAudio.ctx.audioWorklet) ? 1 : 0; + }, + + godot_audio_has_script_processor__sig: 'i', + godot_audio_has_script_processor: function () { + return (GodotAudio.ctx && GodotAudio.ctx.createScriptProcessor) ? 1 : 0; + }, + godot_audio_init__sig: 'iiiii', godot_audio_init: function (p_mix_rate, p_latency, p_state_change, p_latency_update) { const statechange = GodotRuntime.get_func(p_state_change); const latencyupdate = GodotRuntime.get_func(p_latency_update); - return GodotAudio.init(p_mix_rate, p_latency, statechange, latencyupdate); + const mix_rate = GodotRuntime.getHeapValue(p_mix_rate, 'i32'); + const channels = GodotAudio.init(mix_rate, p_latency, statechange, latencyupdate); + GodotRuntime.setHeapValue(p_mix_rate, GodotAudio.ctx.sampleRate, 'i32'); + return channels; }, godot_audio_resume__sig: 'v', @@ -202,6 +219,7 @@ const GodotAudioWorklet = { $GodotAudioWorklet: { promise: null, worklet: null, + ring_buffer: null, create: function (channels) { const path = GodotConfig.locate_file('godot.audio.worklet.js'); @@ -211,7 +229,7 @@ const GodotAudioWorklet = { 'godot-processor', { 'outputChannelCount': [channels], - }, + } ); return Promise.resolve(); }); @@ -232,6 +250,86 @@ const GodotAudioWorklet = { }); }, + 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 = GodotRuntime.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 = GodotRuntime.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); + }; + } + GodotAudioWorklet.ring_buffer = new RingBuffer(); + GodotAudioWorklet.promise.then(function () { + const node = GodotAudioWorklet.worklet; + const buffer = GodotRuntime.heapSlice(HEAPF32, p_out_buf, p_out_size); + node.connect(GodotAudio.ctx.destination); + node.port.postMessage({ + 'cmd': 'start_nothreads', + 'data': [buffer, p_in_size], + }); + node.port.onmessage = function (event) { + if (!GodotAudioWorklet.worklet) { + return; + } + if (event.data['cmd'] === 'read') { + const read = event.data['data']; + GodotAudioWorklet.ring_buffer.consumed(read, GodotAudioWorklet.worklet.port); + } else if (event.data['cmd'] === 'input') { + const buf = event.data['data']; + if (buf.length > p_in_size) { + GodotRuntime.error('Input chunk is too big'); + return; + } + GodotAudioWorklet.ring_buffer.receive(buf); + } else { + GodotRuntime.error(event.data); + } + }; + }); + }, + get_node: function () { return GodotAudioWorklet.worklet; }, @@ -255,9 +353,15 @@ const GodotAudioWorklet = { }, }, - godot_audio_worklet_create__sig: 'vi', + godot_audio_worklet_create__sig: 'ii', godot_audio_worklet_create: function (channels) { - GodotAudioWorklet.create(channels); + try { + GodotAudioWorklet.create(channels); + } catch (e) { + GodotRuntime.error('Error starting AudioDriverWorklet', e); + return 1; + } + return 0; }, godot_audio_worklet_start__sig: 'viiiii', @@ -268,6 +372,13 @@ const GodotAudioWorklet = { GodotAudioWorklet.start(in_buffer, out_buffer, state); }, + godot_audio_worklet_start_no_threads__sig: 'viiiiii', + godot_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 = GodotRuntime.get_func(p_out_callback); + const in_callback = GodotRuntime.get_func(p_in_callback); + GodotAudioWorklet.start_no_threads(p_out_buf, p_out_size, out_callback, p_in_buf, p_in_size, in_callback); + }, + godot_audio_worklet_state_wait__sig: 'iiii', godot_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); @@ -351,7 +462,15 @@ const GodotAudioScript = { godot_audio_script_create__sig: 'iii', godot_audio_script_create: function (buffer_length, channel_count) { - return GodotAudioScript.create(buffer_length, channel_count); + const buf_len = GodotRuntime.getHeapValue(buffer_length, 'i32'); + try { + const out_len = GodotAudioScript.create(buf_len, channel_count); + GodotRuntime.setHeapValue(buffer_length, out_len, 'i32'); + } catch (e) { + GodotRuntime.error('Error starting AudioDriverScriptProcessor', e); + return 1; + } + return 0; }, godot_audio_script_start__sig: 'viiiii', |