diff options
Diffstat (limited to 'modules/webrtc/library_godot_webrtc.js')
| -rw-r--r-- | modules/webrtc/library_godot_webrtc.js | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/modules/webrtc/library_godot_webrtc.js b/modules/webrtc/library_godot_webrtc.js new file mode 100644 index 0000000000..b75996b1f3 --- /dev/null +++ b/modules/webrtc/library_godot_webrtc.js @@ -0,0 +1,407 @@ +/*************************************************************************/ +/* library_godot_webrtc.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 GodotRTCDataChannel = { + // Our socket implementation that forwards events to C++. + $GodotRTCDataChannel__deps: ['$IDHandler', '$GodotOS'], + $GodotRTCDataChannel: { + + connect: function(p_id, p_on_open, p_on_message, p_on_error, p_on_close) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + + ref.binaryType = 'arraybuffer'; + ref.onopen = function (event) { + p_on_open(); + }; + ref.onclose = function (event) { + p_on_close(); + }; + ref.onerror = function (event) { + p_on_error(); + }; + ref.onmessage = function(event) { + var buffer; + var is_string = 0; + if (event.data instanceof ArrayBuffer) { + buffer = new Uint8Array(event.data); + } else if (event.data instanceof Blob) { + console.error("Blob type not supported"); + return; + } else if (typeof event.data === "string") { + is_string = 1; + var enc = new TextEncoder("utf-8"); + buffer = new Uint8Array(enc.encode(event.data)); + } else { + console.error("Unknown message type"); + return; + } + var len = buffer.length*buffer.BYTES_PER_ELEMENT; + var out = _malloc(len); + HEAPU8.set(buffer, out); + p_on_message(out, len, is_string); + _free(out); + } + }, + + close: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + ref.onopen = null; + ref.onmessage = null; + ref.onerror = null; + ref.onclose = null; + ref.close(); + }, + + get_prop: function(p_id, p_prop, p_def) { + const ref = IDHandler.get(p_id); + return (ref && ref[p_prop] !== undefined) ? ref[p_prop] : p_def; + }, + }, + + godot_js_rtc_datachannel_ready_state_get: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return 3; // CLOSED + } + + switch(ref.readyState) { + case "connecting": + return 0; + case "open": + return 1; + case "closing": + return 2; + case "closed": + return 3; + } + return 3; // CLOSED + }, + + godot_js_rtc_datachannel_send: function(p_id, p_buffer, p_length, p_raw) { + const ref = IDHandler.get(p_id); + if (!ref) { + return 1; + } + + const bytes_array = new Uint8Array(p_length); + for (var i = 0; i < p_length; i++) { + bytes_array[i] = getValue(p_buffer + i, 'i8'); + } + + if (p_raw) { + ref.send(bytes_array.buffer); + } else { + const string = new TextDecoder('utf-8').decode(bytes_array); + ref.send(string); + } + }, + + godot_js_rtc_datachannel_is_ordered: function(p_id) { + return IDHandler.get_prop(p_id, 'ordered', true); + }, + + godot_js_rtc_datachannel_id_get: function(p_id) { + return IDHandler.get_prop(p_id, 'id', 65535); + }, + + godot_js_rtc_datachannel_max_packet_lifetime_get: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return 65535; + } + if (ref['maxPacketLifeTime'] !== undefined) { + return ref['maxPacketLifeTime']; + } else if (ref['maxRetransmitTime'] !== undefined) { + // Guess someone didn't appreciate the standardization process. + return ref['maxRetransmitTime']; + } + return 65535; + }, + + godot_js_rtc_datachannel_max_retransmits_get: function(p_id) { + return IDHandler.get_prop(p_id, 'maxRetransmits', 65535); + }, + + godot_js_rtc_datachannel_is_negotiated: function(p_id, p_def) { + return IDHandler.get_prop(p_id, 'negotiated', 65535); + }, + + godot_js_rtc_datachannel_label_get: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref || !ref.label) { + return 0; + } + return GodotOS.allocString(ref.label); + }, + + godot_js_rtc_datachannel_protocol_get: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref || !ref.protocol) { + return 0; + } + return GodotOS.allocString(ref.protocol); + }, + + godot_js_rtc_datachannel_destroy: function(p_id) { + GodotRTCDataChannel.close(p_id); + IDHandler.remove(p_id); + }, + + godot_js_rtc_datachannel_connect: function(p_id, p_ref, p_on_open, p_on_message, p_on_error, p_on_close) { + const onopen = GodotOS.get_func(p_on_open).bind(null, p_ref); + const onmessage = GodotOS.get_func(p_on_message).bind(null, p_ref); + const onerror = GodotOS.get_func(p_on_error).bind(null, p_ref); + const onclose = GodotOS.get_func(p_on_close).bind(null, p_ref); + GodotRTCDataChannel.connect(p_id, onopen, onmessage, onerror, onclose); + }, + + godot_js_rtc_datachannel_close: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + GodotRTCDataChannel.close(p_id); + }, +}; + +autoAddDeps(GodotRTCDataChannel, '$GodotRTCDataChannel'); +mergeInto(LibraryManager.library, GodotRTCDataChannel); + +var GodotRTCPeerConnection = { + + $GodotRTCPeerConnection__deps: ['$IDHandler', '$GodotOS', '$GodotRTCDataChannel'], + $GodotRTCPeerConnection: { + onstatechange: function(p_id, p_conn, callback, event) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + var state = 5; // CLOSED + switch(p_conn.iceConnectionState) { + case "new": + state = 0; + case "checking": + state = 1; + case "connected": + case "completed": + state = 2; + case "disconnected": + state = 3; + case "failed": + state = 4; + case "closed": + state = 5; + } + callback(state); + }, + + onicecandidate: function(p_id, callback, event) { + const ref = IDHandler.get(p_id); + if (!ref || !event.candidate) { + return; + } + + let c = event.candidate; + let candidate_str = GodotOS.allocString(c.candidate); + let mid_str = GodotOS.allocString(c.sdpMid); + callback(mid_str, c.sdpMLineIndex, candidate_str); + _free(candidate_str); + _free(mid_str); + }, + + ondatachannel: function(p_id, callback, event) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + + const cid = IDHandler.add(event.channel); + callback(cid); + }, + + onsession: function(p_id, callback, session) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + let type_str = GodotOS.allocString(session.type); + let sdp_str = GodotOS.allocString(session.sdp); + callback(type_str, sdp_str); + _free(type_str); + _free(sdp_str); + }, + + onerror: function(p_id, callback, error) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + console.error(error); + callback(); + }, + }, + + godot_js_rtc_pc_create: function(p_config, p_ref, p_on_state_change, p_on_candidate, p_on_datachannel) { + const onstatechange = GodotOS.get_func(p_on_state_change).bind(null, p_ref); + const oncandidate = GodotOS.get_func(p_on_candidate).bind(null, p_ref); + const ondatachannel = GodotOS.get_func(p_on_datachannel).bind(null, p_ref); + + var config = JSON.parse(UTF8ToString(p_config)); + var conn = null; + try { + conn = new RTCPeerConnection(config); + } catch (e) { + console.error(e); + return 0; + } + + const base = GodotRTCPeerConnection; + const id = IDHandler.add(conn); + conn.oniceconnectionstatechange = base.onstatechange.bind(null, id, conn, onstatechange); + conn.onicecandidate = base.onicecandidate.bind(null, id, oncandidate); + conn.ondatachannel = base.ondatachannel.bind(null, id, ondatachannel); + return id; + }, + + godot_js_rtc_pc_close: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + ref.close(); + }, + + godot_js_rtc_pc_destroy: function(p_id) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + ref.oniceconnectionstatechange = null; + ref.onicecandidate = null; + ref.ondatachannel = null; + IDHandler.remove(p_id); + }, + + godot_js_rtc_pc_offer_create: function(p_id, p_obj, p_on_session, p_on_error) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + const onsession = GodotOS.get_func(p_on_session).bind(null, p_obj); + const onerror = GodotOS.get_func(p_on_error).bind(null, p_obj); + ref.createOffer().then(function(session) { + GodotRTCPeerConnection.onsession(p_id, onsession, session); + }).catch(function(error) { + GodotRTCPeerConnection.onerror(p_id, onerror, error); + }); + }, + + godot_js_rtc_pc_local_description_set: function(p_id, p_type, p_sdp, p_obj, p_on_error) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + const type = UTF8ToString(p_type); + const sdp = UTF8ToString(p_sdp); + const onerror = GodotOS.get_func(p_on_error).bind(null, p_obj); + ref.setLocalDescription({ + 'sdp': sdp, + 'type': type + }).catch(function(error) { + GodotRTCPeerConnection.onerror(p_id, onerror, error); + }); + }, + + godot_js_rtc_pc_remote_description_set: function(p_id, p_type, p_sdp, p_obj, p_session_created, p_on_error) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + const type = UTF8ToString(p_type); + const sdp = UTF8ToString(p_sdp); + const onerror = GodotOS.get_func(p_on_error).bind(null, p_obj); + const onsession = GodotOS.get_func(p_session_created).bind(null, p_obj); + ref.setRemoteDescription({ + 'sdp': sdp, + 'type': type + }).then(function() { + if (type != 'offer') { + return; + } + return ref.createAnswer().then(function(session) { + GodotRTCPeerConnection.onsession(p_id, onsession, session); + }); + }).catch(function(error) { + GodotRTCPeerConnection.onerror(p_id, onerror, error); + }); + }, + + godot_js_rtc_pc_ice_candidate_add: function(p_id, p_mid_name, p_mline_idx, p_sdp) { + const ref = IDHandler.get(p_id); + if (!ref) { + return; + } + var sdpMidName = UTF8ToString(p_mid_name); + var sdpName = UTF8ToString(p_sdp); + ref.addIceCandidate(new RTCIceCandidate({ + "candidate": sdpName, + "sdpMid": sdpMidName, + "sdpMlineIndex": p_mline_idx, + })); + }, + + godot_js_rtc_pc_datachannel_create__deps: ['$GodotRTCDataChannel'], + godot_js_rtc_pc_datachannel_create: function(p_id, p_label, p_config) { + try { + const ref = IDHandler.get(p_id); + if (!ref) { + return 0; + } + + const label = UTF8ToString(p_label); + const config = JSON.parse(UTF8ToString(p_config)); + + const channel = ref.createDataChannel(label, config); + return IDHandler.add(channel); + } catch (e) { + console.error(e); + return 0; + } + }, +}; + +autoAddDeps(GodotRTCPeerConnection, '$GodotRTCPeerConnection') +mergeInto(LibraryManager.library, GodotRTCPeerConnection); |