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annotate libervia/frontends/tools/webrtc_remote_control.py @ 4340:ea72364131d5 default tip @

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doc (components): Update Email Gateway documentation: A section has been added to explain how attachments are handled. fix 453
author Goffi <goffi@goffi.org>
date Tue, 03 Dec 2024 00:53:18 +0100
parents 0d7bb4df2343
children
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1 #!/usr/bin/env python3
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2
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3 # Libervia Remote-Control via WebRTC implementation.
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4 # Copyright (C) 2009-2024 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19
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20 import asyncio
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21 from functools import partial
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22 import logging
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23 from typing import Any, Awaitable, Callable
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24
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25 import gi
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26 from gi.overrides.Gst import GLib
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27 from gi.repository import GstWebRTC
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28
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29 import cbor2
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30 from libervia.backend.core.i18n import _
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31 from libervia.backend.tools.common import data_format
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32 from libervia.frontends.tools import aio, jid, webrtc
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33 from libervia.frontends.tools.webrtc_models import (
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34 CallData,
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35 SourcesNone,
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36 SourcesPipeline,
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37 )
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38
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39 gi.require_versions({"Gst": "1.0", "GstWebRTC": "1.0"})
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40 OnOpenCbType = Callable[["WebRTCRemoteController"], None | Awaitable[None]]
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41 MOUSE_BTN_LEFT = 0x110
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42 MOUSE_BTN_RIGHT = 0x111
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43 MOUSE_BTN_MIDDLE = 0x112
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44 MOUSE_BTN_FORWARD = 0x115
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45 MOUSE_BTN_BACK = 0x116
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46
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47
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48 log = logging.getLogger(__name__)
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49
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50
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51 class WebRTCRemoteController:
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52
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53 def __init__(
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54 self,
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55 bridge,
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56 profile: str,
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57 on_call_start_cb: Callable[[dict], Any] | None = None,
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58 end_call_cb: Callable[[], Any] | None = None,
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59 ) -> None:
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60 """Initializes the File Sender.
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61
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62 @param bridge: An async Bridge instance.
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63 @param profile: The profile name to be used.
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64 @param on_call_start_cb: A blocking or async callable that accepts a dict as its
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65 only argument.
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66 @param end_call_cb: A callable to be invoked at the end of a call.
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67 """
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68
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69 self.bridge = bridge
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70 self.profile = profile
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71 self.on_call_start_cb = on_call_start_cb
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72 self.end_call_cb = end_call_cb
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73 self.loop = asyncio.get_event_loop()
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74 self.data_channel: GstWebRTC.WebRTCDataChannel | None = None
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75
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76 def send_input(self, input_data: dict) -> None:
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77 """Send an input data to controlled device
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78
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79 @param input_data: data of the input event.
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80 """
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81 assert self.data_channel is not None
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82 self.data_channel.send_data(GLib.Bytes(cbor2.dumps(input_data)))
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83
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84 async def _on_webrtc_call_start(
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85 self,
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86 options: dict,
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87 callee: str,
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88 call_data: dict,
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89 profile: str,
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90 ) -> str:
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91 rc_data = {
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92 "webrtc": True,
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93 "call_data": call_data,
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94 }
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95 rc_data.update(options)
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96 remote_control_data_s = await self.bridge.remote_control_start(
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97 str(callee),
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98 data_format.serialise(rc_data),
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99 profile,
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100 )
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101 remote_control_data = data_format.deserialise(remote_control_data_s)
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102
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103 if self.on_call_start_cb is not None:
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104 await aio.maybe_async(self.on_call_start_cb(remote_control_data))
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105 return remote_control_data["session_id"]
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106
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107 def _on_dc_close(self, webrtc_call, data_channel: GstWebRTC.WebRTCDataChannel):
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108 if webrtc_call is not None:
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109 aio.run_from_thread(self._end_call_and_quit, webrtc_call, loop=self.loop)
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110
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111 async def _end_call_and_quit(self, webrtc_call):
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112 await webrtc_call.webrtc.end_call()
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113 if self.end_call_cb is not None:
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114 await aio.maybe_async(self.end_call_cb())
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115
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116 def _on_dc_open(
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117 self, on_open_cb: OnOpenCbType, data_channel: GstWebRTC.WebRTCDataChannel
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118 ) -> None:
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119 """Called when datachannel is open"""
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120 self.data_channel = data_channel
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121 aio.run_from_thread(self.on_dc_opened, on_open_cb, loop=self.loop)
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122
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123 async def on_dc_opened(self, on_open_cb: OnOpenCbType) -> None:
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124 await aio.maybe_async(on_open_cb(self))
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125
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126 async def start(
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127 self, callee: jid.JID, options: dict, on_open_cb: OnOpenCbType
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128 ) -> None:
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129 """Start a remote control session with ``callee``
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130
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131 @param callee: The JID of the recipient to send the file to.
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132 @param options: Options such as which devices to control.
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133 @param on_open_cb: Method to call when the Data Channel is open.
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134 The WebRTCRemoteController instance used as argument can then be used to send
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135 input events to received.
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136 """
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137 call_data = CallData(callee=callee)
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138 self.webrtc_call = await webrtc.WebRTCCall.make_webrtc_call(
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139 self.bridge,
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140 self.profile,
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141 call_data,
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142 sources_data=webrtc.SourcesDataChannel(
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143 dc_open_cb=partial(self._on_dc_open, on_open_cb),
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144 ),
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145 call_start_cb=partial(self._on_webrtc_call_start, options),
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146 )
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147
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148
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149 class WebRTCRemoteControlReceiver:
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150
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151 def __init__(
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152 self,
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153 bridge,
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154 profile: str,
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155 on_close_cb: Callable[[], Any] | None = None,
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156 verbose: bool = False,
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157 ) -> None:
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158 """Initializes the File Receiver.
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159
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160 @param bridge: An async Bridge instance.
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161 @param profile: The profile name to be used.
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162 @param on_close_cb: Called when the Data Channel is closed.
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163 @param verbose: if True, print input events.
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164 """
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165 self.bridge = bridge
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166 self.profile = profile
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167 self.on_close_cb = on_close_cb
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168 self.loop = asyncio.get_event_loop()
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169 self.desktop_portal = None
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170 self.remote_desktop_data: dict | None = None
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171 self.stream_node_id: int | None = None
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172 self.verbose = verbose
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173
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174 async def do_input(self, data: dict) -> None:
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175 assert self.desktop_portal is not None
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176 try:
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177 type_ = data["type"]
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178 if type_.startswith("mouse"):
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179 try:
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180 try:
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181 x, y = data["x"], data["y"]
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182 except KeyError:
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183 dx, dy = data["movementX"], data["movementY"]
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184 await self.desktop_portal.notify_pointer_motion(dx, dy)
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185 else:
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186 assert self.stream_node_id is not None
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187 await self.desktop_portal.notify_pointer_motion_absolute(
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188 self.stream_node_id, x, y
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189 )
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190 except Exception:
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191 log.exception("Can't send input")
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192
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193 if type_ in ("mouseup", "mousedown"):
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194 buttons = data["buttons"]
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195 state = 1 if type_ == "mousedown" else 0
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196 # see https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons#value
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197 if buttons & 1:
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198 await self.desktop_portal.notify_pointer_button(
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199 MOUSE_BTN_LEFT, state
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200 )
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201 if buttons & 2:
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202 await self.desktop_portal.notify_pointer_button(
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203 MOUSE_BTN_RIGHT, state
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204 )
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205 if buttons & 4:
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206 await self.desktop_portal.notify_pointer_button(
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207 MOUSE_BTN_MIDDLE, state
4242
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208 )
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209 if buttons & 8:
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210 await self.desktop_portal.notify_pointer_button(
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211 MOUSE_BTN_BACK, state
4242
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212 )
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213 if buttons & 16:
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214 await self.desktop_portal.notify_pointer_button(
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215 MOUSE_BTN_FORWARD, state
4242
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216 )
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217 elif type_ == "wheel":
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218 dx = data.get("deltaX", 0)
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219 dy = data.get("deltaY", 0)
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220 delta_mode = data["deltaMode"]
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221 if delta_mode == 0:
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222 # deltas are in pixels
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223 await self.desktop_portal.notify_pointer_axis(dx, dy)
4242
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224 else:
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225 # deltas are in steps (see
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diff changeset
226 # https://developer.mozilla.org/en-US/docs/Web/API/Element/wheel_event#event_properties)
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227 if dx:
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228 await self.desktop_portal.notify_pointer_axis(1, dx)
4242
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229 if dy:
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230 await self.desktop_portal.notify_pointer_axis(0, dy)
4242
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231 elif type_.startswith("key"):
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diff changeset
232 # FIXME: this is a really naive implementation, it needs tot be improved.
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233 key = data["key"]
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diff changeset
234 if data.get("shiftKey", False):
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diff changeset
235 key = key.upper()
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parents:
diff changeset
236 await self.desktop_portal.notify_keyboard_keysym(
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parents:
diff changeset
237 ord(key), 1 if type_ == "keydown" else 0
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diff changeset
238 )
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
239
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
240 except Exception:
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
241 log.exception(f"Can't handle input {data}")
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
242
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
243 def _on_dc_message_data(self, data_channel, glib_data) -> None:
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diff changeset
244 """A data chunk of the file has been received."""
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245 raw = glib_data.get_data()
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diff changeset
246 data = cbor2.loads(raw)
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diff changeset
247 if self.verbose:
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diff changeset
248 print(data)
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diff changeset
249 aio.run_from_thread(self.do_input, data, loop=self.loop)
4242
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250
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
251 def _on_dc_close(self, data_channel) -> None:
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diff changeset
252 """Data channel is closed
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
253
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
254 The file download should be complete, we close it.
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diff changeset
255 """
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
256 aio.run_from_thread(self._on_close, loop=self.loop)
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
257
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
258 async def _on_close(self) -> None:
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parents:
diff changeset
259 if self.on_close_cb is not None:
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
260 await aio.maybe_async(self.on_close_cb())
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
261
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
262 def _on_data_channel(self, webrtcbin, data_channel) -> None:
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diff changeset
263 """The data channel has been opened."""
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parents: 4242
diff changeset
264 data_channel.connect("on-message-data", self._on_dc_message_data)
4242
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parents:
diff changeset
265 data_channel.connect("on-close", self._on_dc_close)
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parents:
diff changeset
266
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
267 async def request_remote_desktop(self, with_screen_sharing: bool) -> None:
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parents:
diff changeset
268 """Request autorisation to remote control desktop.
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parents:
diff changeset
269
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
270 @param with_screen_sharing: True if screen must be shared.
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parents:
diff changeset
271 """
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
272 from .portal_desktop import DesktopPortal
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diff changeset
273
4242
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274 self.desktop_portal = DesktopPortal()
8acf46ed7f36 frontends: remote control implementation:
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diff changeset
275 self.remote_desktop_data = await self.desktop_portal.request_remote_desktop(
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
276 with_screen_sharing
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parents:
diff changeset
277 )
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
278 print(self.remote_desktop_data)
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
279
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parents:
diff changeset
280 async def start_receiving(
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diff changeset
281 self, from_jid: jid.JID, session_id: str, screenshare: dict
4242
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parents:
diff changeset
282 ) -> None:
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
283 """Receives a file via WebRTC and saves it to the specified path.
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parents:
diff changeset
284
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
285 @param from_jid: The JID of the entity sending the file.
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parents:
diff changeset
286 @param session_id: The Jingle FT Session ID.
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parents:
diff changeset
287 @param file_path: The local path where the received file will be saved.
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parents:
diff changeset
288 If a file already exists at this path, it will be overwritten.
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parents:
diff changeset
289 @param file_data: Additional data about the file being transferred.
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
290 """
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
291 call_data = CallData(callee=from_jid, sid=session_id)
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
292 if "video" in screenshare and self.remote_desktop_data:
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
293 try:
8acf46ed7f36 frontends: remote control implementation:
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parents:
diff changeset
294 stream_data = self.remote_desktop_data["stream_data"]
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295 log.debug(f"{stream_data=}")
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296 self.stream_node_id = stream_data["node_id"]
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297
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298 sources_data = SourcesPipeline(
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299 video_pipeline="pipewiresrc",
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300 audio_pipeline="",
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301 video_properties={
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302 "path": str(self.stream_node_id),
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303 "do-timestamp": 1,
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304 },
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305 )
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306 except KeyError:
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307 sources_data = SourcesNone()
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308 else:
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309 sources_data = SourcesNone()
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310
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311 await webrtc.WebRTCCall.make_webrtc_call(
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312 self.bridge,
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313 self.profile,
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314 call_data,
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315 sources_data=sources_data,
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316 sinks_data=webrtc.SinksNone(),
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317 dc_data_list=[
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318 webrtc.SinksDataChannel(
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319 dc_on_data_channel=self._on_data_channel,
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320 )
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321 ],
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322 )