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annotate libervia/frontends/tools/webrtc.py @ 4139:6745c6bd4c7a

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frontends (tools): webrtc implementation: this is a factored implementation usable by all non-web frontends. Sources and Sinks can be configured easily to use tests source or local webcam/microphone, autosinks or a `appsink` that the frontend will use. rel 426
author Goffi <goffi@goffi.org>
date Wed, 01 Nov 2023 14:03:36 +0100
parents
children 970b6209526a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4139
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1 #!/usr/bin/env python3
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2
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3 # Libervia WebRTC implementation
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4 # Copyright (C) 2009-2023 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 import gi
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20 gi.require_versions({
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21 "Gst": "1.0",
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22 "GstWebRTC": "1.0"
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23 })
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24 from gi.repository import Gst, GstWebRTC, GstSdp
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25
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26 try:
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27 from gi.overrides import Gst as _
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28 except ImportError:
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29 print(
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30 "no GStreamer python overrides available, please install relevant pacakges on "
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31 "your system."
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32 )
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33 import asyncio
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34 from dataclasses import dataclass
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35 from datetime import datetime
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36 import logging
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37 import re
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38 from typing import Callable
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39 from urllib.parse import quote_plus
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40
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41 from libervia.backend.core import exceptions
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42 from libervia.backend.tools.common import data_format
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43 from libervia.frontends.tools import aio
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44
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45
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46 log = logging.getLogger(__name__)
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47
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48 Gst.init(None)
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49
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50 SOURCES_AUTO = "auto"
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51 SOURCES_TEST = "test"
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52 SINKS_APP = "app"
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53 SINKS_AUTO = "auto"
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54 SINKS_TEST = "test"
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55
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56
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57 @dataclass
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58 class AppSinkData:
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59 local_video_cb: Callable
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60 remote_video_cb: Callable
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61
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62
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63 class WebRTC:
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64 """GSTreamer based WebRTC implementation for audio and video communication.
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65
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66 This class encapsulates the WebRTC functionalities required for initiating and
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67 handling audio and video calls.
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68 """
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69
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70 def __init__(
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71 self,
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72 bridge,
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73 profile: str,
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74 sources: str = SOURCES_AUTO,
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75 sinks: str = SINKS_AUTO,
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76 appsink_data: AppSinkData | None = None,
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77 reset_cb: Callable | None = None,
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78 ) -> None:
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79 self.main_loop = asyncio.get_event_loop()
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80 self.bridge = bridge
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81 self.profile = profile
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82 self.pipeline = None
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83 self._audio_muted = False
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84 self._video_muted = False
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85 self.sources = sources
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86 self.sinks = sinks
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87 if sinks == SINKS_APP:
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88 self.appsink_data = appsink_data
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89 elif appsink_data is not None:
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90 raise exceptions.InternalError(
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91 "appsink_data can only be used for SINKS_APP sinks"
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92 )
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93 self.reset_cb = reset_cb
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94 self.reset_instance()
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95
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96 @property
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97 def audio_muted(self):
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98 return self._audio_muted
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99
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100 @audio_muted.setter
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101 def audio_muted(self, muted: bool) -> None:
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102 if muted != self._audio_muted:
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103 self._audio_muted = muted
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104 self.on_audio_mute(muted)
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105
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106 @property
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107 def video_muted(self):
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108 return self._video_muted
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109
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110 @video_muted.setter
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111 def video_muted(self, muted: bool) -> None:
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112 if muted != self._video_muted:
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113 self._video_muted = muted
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114 self.on_video_mute(muted)
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115
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116 @property
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117 def sdp_set(self):
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118 return self._sdp_set
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119
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120 @sdp_set.setter
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121 def sdp_set(self, is_set: bool):
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122 self._sdp_set = is_set
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123 if is_set:
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124 self.on_ice_candidates_new(self.remote_candidates_buffer)
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125 for data in self.remote_candidates_buffer.values():
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126 data["candidates"].clear()
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127
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128 @property
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129 def media_types(self):
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130 if self._media_types is None:
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131 raise Exception("self._media_types should not be None!")
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132 return self._media_types
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133
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134 @media_types.setter
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135 def media_types(self, new_media_types: dict) -> None:
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136 self._media_types = new_media_types
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137 self._media_types_inv = {v: k for k, v in new_media_types.items()}
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138
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139 @property
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140 def media_types_inv(self) -> dict:
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141 if self._media_types_inv is None:
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142 raise Exception("self._media_types_inv should not be None!")
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143 return self._media_types_inv
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144
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145 def generate_dot_file(
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146 self,
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147 filename: str = "pipeline",
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148 details: Gst.DebugGraphDetails = Gst.DebugGraphDetails.ALL,
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149 with_timestamp: bool = True,
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150 bin_: Gst.Bin|None = None,
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151 ) -> None:
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152 """Generate Dot File for debugging
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153
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154 ``GST_DEBUG_DUMP_DOT_DIR`` environment variable must be set to destination dir.
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155 ``dot -Tpng -o <filename>.png <filename>.dot`` can be use to convert to a PNG file.
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156 See
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157 https://gstreamer.freedesktop.org/documentation/gstreamer/debugutils.html?gi-language=python#GstDebugGraphDetails
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158 for details.
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159
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160 @param filename: name of the generated file
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161 @param details: which details to print
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162 @param with_timestamp: if True, add a timestamp to filename
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163 @param bin_: which bin to output. By default, the whole pipeline
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164 (``self.pipeline``) will be used.
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165 """
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166 if bin_ is None:
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167 bin_ = self.pipeline
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168 if with_timestamp:
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169 timestamp = datetime.now().isoformat(timespec='milliseconds')
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170 filename = f"{timestamp}_filename"
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171
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172 Gst.debug_bin_to_dot_file(bin_, details, filename)
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173
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174 def get_sdp_mline_index(self, media_type: str) -> int:
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175 """Gets the sdpMLineIndex for a given media type.
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176
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177 @param media_type: The type of the media.
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178 """
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179 for index, m_type in self.media_types.items():
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180 if m_type == media_type:
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181 return index
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182 raise ValueError(f"Media type '{media_type}' not found")
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183
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184 def _set_media_types(self, offer_sdp: str) -> None:
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185 """Sets media types from offer SDP
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186
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187 @param offer: RTC session description containing the offer
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188 """
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189 sdp_lines = offer_sdp.splitlines()
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190 media_types = {}
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191 mline_index = 0
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192
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193 for line in sdp_lines:
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194 if line.startswith("m="):
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195 media_types[mline_index] = line[2 : line.find(" ")]
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196 mline_index += 1
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197
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198 self.media_types = media_types
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199
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200 def _a_call(self, method, *args, **kwargs):
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201 """Call an async method in main thread"""
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202 aio.run_from_thread(method, *args, **kwargs, loop=self.main_loop)
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203
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204 def get_payload_types(
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205 self, sdpmsg, video_encoding: str, audio_encoding: str
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206 ) -> dict[str, int | None]:
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207 """Find the payload types for the specified video and audio encoding.
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208
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209 Very simplistically finds the first payload type matching the encoding
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210 name. More complex applications will want to match caps on
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211 profile-level-id, packetization-mode, etc.
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212 """
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213 # method coming from gstreamer example (Matthew Waters, Nirbheek Chauhan) at
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214 # subprojects/gst-examples/webrtc/sendrecv/gst/webrtc_sendrecv.py
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215 video_pt = None
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216 audio_pt = None
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217 for i in range(0, sdpmsg.medias_len()):
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218 media = sdpmsg.get_media(i)
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219 for j in range(0, media.formats_len()):
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220 fmt = media.get_format(j)
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221 if fmt == "webrtc-datachannel":
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222 continue
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223 pt = int(fmt)
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224 caps = media.get_caps_from_media(pt)
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225 s = caps.get_structure(0)
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226 encoding_name = s["encoding-name"]
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227 if video_pt is None and encoding_name == video_encoding:
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228 video_pt = pt
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229 elif audio_pt is None and encoding_name == audio_encoding:
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230 audio_pt = pt
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231 return {video_encoding: video_pt, audio_encoding: audio_pt}
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232
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233 def parse_ice_candidate(self, candidate_string):
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234 """Parses the ice candidate string.
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235
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236 @param candidate_string: The ice candidate string to be parsed.
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237 """
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238 pattern = re.compile(
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239 r"candidate:(?P<foundation>\S+) (?P<component_id>\d+) (?P<transport>\S+) "
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240 r"(?P<priority>\d+) (?P<address>\S+) (?P<port>\d+) typ "
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241 r"(?P<type>\S+)(?: raddr (?P<rel_addr>\S+) rport "
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242 r"(?P<rel_port>\d+))?(?: generation (?P<generation>\d+))?"
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243 )
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244 match = pattern.match(candidate_string)
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245 if match:
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246 candidate_dict = match.groupdict()
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247
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248 # Apply the correct types to the dictionary values
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249 candidate_dict["component_id"] = int(candidate_dict["component_id"])
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250 candidate_dict["priority"] = int(candidate_dict["priority"])
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251 candidate_dict["port"] = int(candidate_dict["port"])
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252
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253 if candidate_dict["rel_port"]:
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254 candidate_dict["rel_port"] = int(candidate_dict["rel_port"])
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255
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256 if candidate_dict["generation"]:
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257 candidate_dict["generation"] = candidate_dict["generation"]
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258
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259 # Remove None values
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260 return {k: v for k, v in candidate_dict.items() if v is not None}
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261 else:
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262 log.warning(f"can't parse candidate: {candidate_string!r}")
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263 return None
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264
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265 def build_ice_candidate(self, parsed_candidate):
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266 """Builds ICE candidate
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267
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268 @param parsed_candidate: Dictionary containing parsed ICE candidate
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269 """
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270 base_format = (
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271 "candidate:{foundation} {component_id} {transport} {priority} "
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272 "{address} {port} typ {type}"
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273 )
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274
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275 if parsed_candidate.get("rel_addr") and parsed_candidate.get("rel_port"):
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276 base_format += " raddr {rel_addr} rport {rel_port}"
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277
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278 if parsed_candidate.get("generation"):
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279 base_format += " generation {generation}"
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280
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281 return base_format.format(**parsed_candidate)
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282
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283 def extract_ufrag_pwd(self, sdp: str) -> tuple[str, str]:
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284 """Retrieves ICE password and user fragment for SDP offer.
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285
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286 @param sdp: The Session Description Protocol offer string.
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287 @return: ufrag and pwd
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288 @raise ValueError: Can't extract ufrag and password
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289 """
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290 ufrag_line = re.search(r"ice-ufrag:(\S+)", sdp)
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291 pwd_line = re.search(r"ice-pwd:(\S+)", sdp)
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292
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293 if ufrag_line and pwd_line:
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294 ufrag = self.ufrag = ufrag_line.group(1)
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295 pwd = self.pwd = pwd_line.group(1)
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296 return ufrag, pwd
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297 else:
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298 log.error(f"SDP with missing ice-ufrag or ice-pwd:\n{sdp}")
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299 raise ValueError("Can't extract ice-ufrag and ice-pwd from SDP")
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300
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301 def reset_instance(self):
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302 """Inits or resets the instance variables to their default state."""
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303 self.role: str | None = None
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304 if self.pipeline is not None:
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305 self.pipeline.set_state(Gst.State.NULL)
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306 self.pipeline = None
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307 self._remote_video_pad = None
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308 self.sid: str | None = None
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309 self.offer: str | None = None
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310 self.local_candidates_buffer = {}
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311 self.ufrag: str | None = None
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312 self.pwd: str | None = None
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313 self.callee: str | None = None
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314 self._media_types = None
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315 self._media_types_inv = None
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316 self._sdp_set: bool = False
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317 self.remote_candidates_buffer: dict[str, dict[str, list]] = {
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318 "audio": {"candidates": []},
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319 "video": {"candidates": []},
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320 }
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321 self._media_types = None
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322 self._media_types_inv = None
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323 self.audio_valve = None
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324 self.video_valve = None
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325 if self.reset_cb is not None:
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326 self.reset_cb()
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327
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328
6745c6bd4c7a frontends (tools): webrtc implementation:
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329 async def setup_call(
6745c6bd4c7a frontends (tools): webrtc implementation:
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330 self,
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331 role: str,
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332 audio_pt: int | None = 96,
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333 video_pt: int | None = 97,
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334 ) -> None:
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335 """Sets up the call.
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336
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337 This method establishes the Gstreamer pipeline for audio and video communication.
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338 The method also manages STUN and TURN server configurations, signal watchers, and
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339 various connection handlers for the webrtcbin.
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340
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341 @param role: The role for the call, either 'initiator' or 'responder'.
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342 @param audio_pt: The payload type for the audio stream.
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343 @param video_pt: The payload type for the video stream
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344
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345 @raises NotImplementedError: If audio_pt or video_pt is set to None.
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346 @raises AssertionError: If the role is not 'initiator' or 'responder'.
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347 """
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348 assert role in ("initiator", "responder")
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349 self.role = role
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350 if audio_pt is None or video_pt is None:
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351 raise NotImplementedError("None value is not handled yet")
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352
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353 if self.sources == SOURCES_AUTO:
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354 video_source_elt = "v4l2src"
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355 audio_source_elt = "pulsesrc"
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356 elif self.sources == SOURCES_TEST:
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357 video_source_elt = "videotestsrc is-live=true pattern=ball"
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358 audio_source_elt = "audiotestsrc"
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359 else:
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360 raise exceptions.InternalError(f'Unknown "sources" value: {self.sources!r}')
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361
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362 extra_elt = ""
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363
6745c6bd4c7a frontends (tools): webrtc implementation:
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364 if self.sinks == SINKS_APP:
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365 local_video_sink_elt = (
6745c6bd4c7a frontends (tools): webrtc implementation:
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366 "appsink name=local_video_sink emit-signals=true drop=true max-buffers=1 "
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367 "sync=True"
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368 )
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369 elif self.sinks == SINKS_AUTO:
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370 extra_elt = "compositor name=compositor ! autovideosink"
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371 local_video_sink_elt = """compositor.sink_1"""
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372 else:
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373 raise exceptions.InternalError(f"Unknown sinks value {self.sinks!r}")
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374
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375 self.gst_pipe_desc = f"""
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376 webrtcbin latency=100 name=sendrecv bundle-policy=max-bundle
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377
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378 input-selector name=video_selector
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379 ! videorate
6745c6bd4c7a frontends (tools): webrtc implementation:
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380 ! video/x-raw,framerate=30/1
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381 ! tee name=t
6745c6bd4c7a frontends (tools): webrtc implementation:
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382
6745c6bd4c7a frontends (tools): webrtc implementation:
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383 {extra_elt}
6745c6bd4c7a frontends (tools): webrtc implementation:
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384
6745c6bd4c7a frontends (tools): webrtc implementation:
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385 {video_source_elt} name=video_src ! queue leaky=downstream ! video_selector.
6745c6bd4c7a frontends (tools): webrtc implementation:
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diff changeset
386 videotestsrc is-live=true pattern=black ! queue leaky=downstream ! video_selector.
6745c6bd4c7a frontends (tools): webrtc implementation:
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387
6745c6bd4c7a frontends (tools): webrtc implementation:
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388 t.
6745c6bd4c7a frontends (tools): webrtc implementation:
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389 ! queue max-size-buffers=5 max-size-time=0 max-size-bytes=0 leaky=downstream
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390 ! videoconvert
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391 ! vp8enc deadline=1 keyframe-max-dist=60
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392 ! rtpvp8pay picture-id-mode=15-bit
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393 ! application/x-rtp,media=video,encoding-name=VP8,payload={video_pt}
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394 ! sendrecv.
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395
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396 t.
6745c6bd4c7a frontends (tools): webrtc implementation:
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397 ! queue max-size-buffers=5 max-size-time=0 max-size-bytes=0 leaky=downstream
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398 ! videoconvert
6745c6bd4c7a frontends (tools): webrtc implementation:
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399 ! {local_video_sink_elt}
6745c6bd4c7a frontends (tools): webrtc implementation:
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400
6745c6bd4c7a frontends (tools): webrtc implementation:
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401 {audio_source_elt} name=audio_src
6745c6bd4c7a frontends (tools): webrtc implementation:
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402 ! valve
6745c6bd4c7a frontends (tools): webrtc implementation:
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403 ! queue max-size-buffers=10 max-size-time=0 max-size-bytes=0 leaky=downstream
6745c6bd4c7a frontends (tools): webrtc implementation:
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404 ! audioconvert
6745c6bd4c7a frontends (tools): webrtc implementation:
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405 ! audioresample
6745c6bd4c7a frontends (tools): webrtc implementation:
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406 ! opusenc audio-type=voice
6745c6bd4c7a frontends (tools): webrtc implementation:
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407 ! rtpopuspay
6745c6bd4c7a frontends (tools): webrtc implementation:
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408 ! application/x-rtp,media=audio,encoding-name=OPUS,payload={audio_pt}
6745c6bd4c7a frontends (tools): webrtc implementation:
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409 ! sendrecv.
6745c6bd4c7a frontends (tools): webrtc implementation:
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410 """
6745c6bd4c7a frontends (tools): webrtc implementation:
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diff changeset
411
6745c6bd4c7a frontends (tools): webrtc implementation:
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412 log.debug(f"Gstreamer pipeline: {self.gst_pipe_desc}")
6745c6bd4c7a frontends (tools): webrtc implementation:
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diff changeset
413
6745c6bd4c7a frontends (tools): webrtc implementation:
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diff changeset
414 # Create the pipeline
6745c6bd4c7a frontends (tools): webrtc implementation:
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415 self.pipeline = Gst.parse_launch(self.gst_pipe_desc)
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416 if not self.pipeline:
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417 raise exceptions.InternalError("Failed to create Gstreamer pipeline.")
6745c6bd4c7a frontends (tools): webrtc implementation:
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diff changeset
418
6745c6bd4c7a frontends (tools): webrtc implementation:
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419 self.webrtcbin = self.pipeline.get_by_name("sendrecv")
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parents:
diff changeset
420 self.video_src = self.pipeline.get_by_name("video_src")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
421 self.video_selector = self.pipeline.get_by_name("video_selector")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
422 self.audio_valve = self.pipeline.get_by_name("audio_valve")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
423
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
424 if self.video_muted:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
425 self.on_video_mute(True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
426 if self.audio_muted:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
427 self.on_audio_mute(True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
428
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
429 # set STUN and TURN servers
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
430 external_disco = data_format.deserialise(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
431 await self.bridge.external_disco_get("", self.profile), type_check=list
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
432 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
433
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
434 for server in external_disco:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
435 if server["type"] == "stun":
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
436 if server["transport"] == "tcp":
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
437 log.info(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
438 "ignoring TCP STUN server, GStreamer only support one STUN server"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
439 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
440 url = f"stun://{server['host']}:{server['port']}"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
441 log.debug(f"adding stun server: {url}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
442 self.webrtcbin.set_property("stun-server", url)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
443 elif server["type"] == "turn":
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
444 url = "{scheme}://{username}:{password}@{host}:{port}".format(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
445 scheme="turns" if server["transport"] == "tcp" else "turn",
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
446 username=quote_plus(server["username"]),
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
447 password=quote_plus(server["password"]),
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
448 host=server["host"],
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
449 port=server["port"],
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
450 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
451 log.debug(f"adding turn server: {url}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
452
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
453 if not self.webrtcbin.emit("add-turn-server", url):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
454 log.warning(f"Erreur while adding TURN server {url}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
455
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
456 # local video feedback
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
457 if self.sinks == SINKS_APP:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
458 assert self.appsink_data is not None
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
459 local_video_sink = self.pipeline.get_by_name("local_video_sink")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
460 local_video_sink.set_property("emit-signals", True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
461 local_video_sink.connect("new-sample", self.appsink_data.local_video_cb)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
462 local_video_sink_caps = Gst.Caps.from_string(f"video/x-raw,format=RGB")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
463 local_video_sink.set_property("caps", local_video_sink_caps)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
464
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
465 # Create bus and associate signal watchers
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
466 self.bus = self.pipeline.get_bus()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
467 if not self.bus:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
468 log.error("Failed to get bus from pipeline.")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
469 return
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
470
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
471 self.bus.add_signal_watch()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
472 self.webrtcbin.connect("pad-added", self.on_pad_added)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
473 self.bus.connect("message::error", self.on_bus_error)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
474 self.bus.connect("message::eos", self.on_bus_eos)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
475 self.webrtcbin.connect("on-negotiation-needed", self.on_negotiation_needed)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
476 self.webrtcbin.connect("on-ice-candidate", self.on_ice_candidate)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
477 self.webrtcbin.connect(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
478 "notify::ice-gathering-state", self.on_ice_gathering_state_change
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
479 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
480 self.webrtcbin.connect(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
481 "notify::ice-connection-state", self.on_ice_connection_state
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
482 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
483
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
484 def start_pipeline(self) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
485 """Starts the GStreamer pipeline."""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
486 log.debug("starting the pipeline")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
487 self.pipeline.set_state(Gst.State.PLAYING)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
488
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
489 def on_negotiation_needed(self, webrtc):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
490 """Initiate SDP offer when negotiation is needed."""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
491 log.debug("Negotiation needed.")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
492 if self.role == "initiator":
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
493 log.debug("Creating offer…")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
494 promise = Gst.Promise.new_with_change_func(self.on_offer_created)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
495 self.webrtcbin.emit("create-offer", None, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
496
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
497 def on_offer_created(self, promise):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
498 """Callback for when SDP offer is created."""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
499 log.info("on_offer_created called")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
500 assert promise.wait() == Gst.PromiseResult.REPLIED
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
501 reply = promise.get_reply()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
502 if reply is None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
503 log.error("Promise reply is None. Offer creation might have failed.")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
504 return
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
505 offer = reply["offer"]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
506 self.offer = offer.sdp.as_text()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
507 log.info(f"SDP offer created: \n{self.offer}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
508 self._set_media_types(self.offer)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
509 promise = Gst.Promise.new()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
510 self.webrtcbin.emit("set-local-description", offer, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
511 promise.interrupt()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
512 self._a_call(self._start_call)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
513
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
514 def on_answer_set(self, promise):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
515 assert promise.wait() == Gst.PromiseResult.REPLIED
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
516
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
517 def on_answer_created(self, promise, _, __):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
518 """Callback for when SDP answer is created."""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
519 assert promise.wait() == Gst.PromiseResult.REPLIED
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
520 reply = promise.get_reply()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
521 answer = reply["answer"]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
522 promise = Gst.Promise.new()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
523 self.webrtcbin.emit("set-local-description", answer, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
524 promise.interrupt()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
525 answer_sdp = answer.sdp.as_text()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
526 log.info(f"SDP answer set: \n{answer_sdp}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
527 self.sdp_set = True
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
528 self._a_call(self.bridge.call_answer_sdp, self.sid, answer_sdp, self.profile)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
529
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
530 def on_offer_set(self, promise):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
531 assert promise.wait() == Gst.PromiseResult.REPLIED
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
532 promise = Gst.Promise.new_with_change_func(self.on_answer_created, None, None)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
533 self.webrtcbin.emit("create-answer", None, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
534
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
535 def link_element_or_pad(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
536 self, source: Gst.Element, dest: Gst.Element | Gst.Pad
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
537 ) -> bool:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
538 """Check if dest is a pad or an element, and link appropriately"""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
539 src_pad = source.get_static_pad("src")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
540
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
541 if isinstance(dest, Gst.Pad):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
542 # If the dest is a pad, link directly
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
543 if not src_pad.link(dest) == Gst.PadLinkReturn.OK:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
544 log.error(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
545 "Failed to link 'conv' to the compositor's newly requested pad!"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
546 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
547 return False
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
548 elif isinstance(dest, Gst.Element):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
549 return source.link(dest)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
550 else:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
551 log.error(f"Unexpected type for dest: {type(sink)}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
552 return False
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
553
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
554 return True
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
555
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
556 def scaled_dimensions(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
557 self, original_width: int, original_height: int, max_width: int, max_height: int
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
558 ) -> tuple[int, int]:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
559 """Calculates the scaled dimensions preserving aspect ratio.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
560
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
561 @param original_width: Original width of the video stream.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
562 @param original_height: Original height of the video stream.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
563 @param max_width: Maximum desired width for the scaled video.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
564 @param max_height: Maximum desired height for the scaled video.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
565 @return: The width and height of the scaled video.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
566 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
567 aspect_ratio = original_width / original_height
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
568 new_width = int(max_height * aspect_ratio)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
569
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
570 if new_width <= max_width:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
571 return new_width, max_height
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
572
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
573 new_height = int(max_width / aspect_ratio)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
574 return max_width, new_height
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
575
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
576 def on_remote_decodebin_stream(self, _, pad: Gst.Pad) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
577 """Handle the stream from the remote decodebin.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
578
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
579 This method processes the incoming stream from the remote decodebin, determining
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
580 whether it's video or audio. It then sets up the appropriate GStreamer elements
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
581 for video/audio processing and adds them to the pipeline.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
582
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
583 @param pad: The Gst.Pad from the remote decodebin producing the stream.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
584 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
585 assert self.pipeline is not None
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
586 if not pad.has_current_caps():
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
587 log.error(f"{pad} has no caps, ignoring")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
588 return
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
589
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
590 caps = pad.get_current_caps()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
591 assert len(caps)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
592 s = caps[0]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
593 name = s.get_name()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
594 log.debug(f"====> NAME START: {name}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
595
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
596 q = Gst.ElementFactory.make("queue")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
597
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
598 if name.startswith("video"):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
599 log.debug("===> VIDEO OK")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
600
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
601 self._remote_video_pad = pad
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
602
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
603 # Check and log the original size of the video
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
604 width = s.get_int("width").value
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
605 height = s.get_int("height").value
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
606 log.info(f"Original video size: {width}x{height}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
607
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
608 # This is a fix for an issue found with Movim on desktop: a non standard
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
609 # resolution is used (990x557) resulting in bad alignement and no color in
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
610 # rendered image
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
611 adjust_resolution = width % 4 != 0 or height % 4 != 0
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
612 if adjust_resolution:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
613 log.info("non standard resolution, we need to adjust size")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
614 width = (width + 3) // 4 * 4
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
615 height = (height + 3) // 4 * 4
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
616 log.info(f"Adjusted video size: {width}x{height}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
617
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
618 conv = Gst.ElementFactory.make("videoconvert")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
619 if self.sinks == SINKS_APP:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
620 assert self.appsink_data is not None
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
621 remote_video_sink = Gst.ElementFactory.make("appsink")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
622
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
623 appsink_caps = Gst.Caps.from_string("video/x-raw,format=RGB")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
624 remote_video_sink.set_property("caps", appsink_caps)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
625
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
626 remote_video_sink.set_property("emit-signals", True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
627 remote_video_sink.set_property("drop", True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
628 remote_video_sink.set_property("max-buffers", 1)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
629 remote_video_sink.set_property("sync", True)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
630 remote_video_sink.connect("new-sample", self.appsink_data.remote_video_cb)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
631 self.pipeline.add(remote_video_sink)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
632 if self.sinks == SINKS_AUTO:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
633 compositor = self.pipeline.get_by_name("compositor")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
634
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
635 sink1_pad = compositor.get_static_pad("sink_1")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
636
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
637 local_width, local_height = self.scaled_dimensions(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
638 sink1_pad.get_property("width"),
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
639 sink1_pad.get_property("height"),
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
640 width // 3,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
641 height // 3,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
642 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
643
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
644 sink1_pad.set_property("xpos", width - local_width)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
645 sink1_pad.set_property("ypos", height - local_height)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
646 sink1_pad.set_property("width", local_width)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
647 sink1_pad.set_property("height", local_height)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
648 sink1_pad.set_property("zorder", 1)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
649
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
650 # Request a new pad for the remote stream
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
651 sink_pad_template = compositor.get_pad_template("sink_%u")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
652 remote_video_sink = compositor.request_pad(sink_pad_template, None, None)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
653 remote_video_sink.set_property("zorder", 0)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
654
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
655 else:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
656 raise exceptions.InternalError(f'Unhandled "sinks" value: {self.sinks!r}')
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
657
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
658 if adjust_resolution:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
659 videoscale = Gst.ElementFactory.make("videoscale")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
660 adjusted_caps = Gst.Caps.from_string(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
661 f"video/x-raw,width={width},height={height}"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
662 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
663 capsfilter = Gst.ElementFactory.make("capsfilter")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
664 capsfilter.set_property("caps", adjusted_caps)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
665
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
666 self.pipeline.add(q, conv, videoscale, capsfilter)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
667
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
668
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
669 self.pipeline.sync_children_states()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
670 ret = pad.link(q.get_static_pad("sink"))
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
671 if ret != Gst.PadLinkReturn.OK:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
672 log.error(f"Error linking pad: {ret}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
673 q.link(conv)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
674 conv.link(videoscale)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
675 videoscale.link(capsfilter)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
676 self.link_element_or_pad(capsfilter.link, remote_video_sink)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
677
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
678 else:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
679 self.pipeline.add(q, conv)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
680
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
681 self.pipeline.sync_children_states()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
682 ret = pad.link(q.get_static_pad("sink"))
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
683 if ret != Gst.PadLinkReturn.OK:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
684 log.error(f"Error linking pad: {ret}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
685 q.link(conv)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
686 self.link_element_or_pad(conv, remote_video_sink)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
687
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
688 elif name.startswith("audio"):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
689 log.debug("===> Audio OK")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
690 conv = Gst.ElementFactory.make("audioconvert")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
691 resample = Gst.ElementFactory.make("audioresample")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
692 remote_audio_sink = Gst.ElementFactory.make("autoaudiosink")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
693 self.pipeline.add(q, conv, resample, remote_audio_sink)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
694 self.pipeline.sync_children_states()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
695 ret = pad.link(q.get_static_pad("sink"))
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
696 if ret != Gst.PadLinkReturn.OK:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
697 log.error(f"Error linking pad: {ret}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
698 q.link(conv)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
699 conv.link(resample)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
700 resample.link(remote_audio_sink)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
701
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
702 else:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
703 log.warning(f"unmanaged name: {name!r}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
704
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
705 def on_pad_added(self, __, pad: Gst.Pad) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
706 """Handle the addition of a new pad to the element.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
707
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
708 When a new source pad is added to the element, this method creates a decodebin,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
709 connects it to handle the stream, and links the pad to the decodebin.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
710
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
711 @param __: Placeholder for the signal source. Not used in this method.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
712 @param pad: The newly added pad.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
713 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
714 log.debug("on_pad_added")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
715 if pad.direction != Gst.PadDirection.SRC:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
716 return
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
717
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
718 decodebin = Gst.ElementFactory.make("decodebin")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
719 decodebin.connect("pad-added", self.on_remote_decodebin_stream)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
720 self.pipeline.add(decodebin)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
721 decodebin.sync_state_with_parent()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
722 pad.link(decodebin.get_static_pad("sink"))
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
723
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
724 async def _start_call(self) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
725 """Initiate the call.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
726
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
727 Initiates a call with the callee using the stored offer. If there are any buffered
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
728 local ICE candidates, they are sent as part of the initiation.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
729 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
730 assert self.callee
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
731 self.sid = await self.bridge.call_start(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
732 str(self.callee), data_format.serialise({"sdp": self.offer}), self.profile
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
733 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
734 if self.local_candidates_buffer:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
735 log.debug(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
736 f"sending buffered local ICE candidates: {self.local_candidates_buffer}"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
737 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
738 if self.pwd is None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
739 sdp = self.webrtcbin.props.local_description.sdp.as_text()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
740 self.extract_ufrag_pwd(sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
741 ice_data = {}
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
742 for media_type, candidates in self.local_candidates_buffer.items():
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
743 ice_data[media_type] = {
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
744 "ufrag": self.ufrag,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
745 "pwd": self.pwd,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
746 "candidates": candidates,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
747 }
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
748 await self.bridge.ice_candidates_add(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
749 self.sid, data_format.serialise(ice_data), self.profile
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
750 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
751 self.local_candidates_buffer.clear()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
752
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
753 def _remote_sdp_set(self, promise) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
754 assert promise.wait() == Gst.PromiseResult.REPLIED
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
755 self.sdp_set = True
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
756
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
757 def on_accepted_call(self, sdp: str, profile: str) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
758 """Outgoing call has been accepted.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
759
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
760 @param sdp: The SDP answer string received from the other party.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
761 @param profile: Profile used for the call.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
762 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
763 log.debug(f"SDP answer received: \n{sdp}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
764
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
765 __, sdpmsg = GstSdp.SDPMessage.new_from_text(sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
766 answer = GstWebRTC.WebRTCSessionDescription.new(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
767 GstWebRTC.WebRTCSDPType.ANSWER, sdpmsg
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
768 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
769 promise = Gst.Promise.new_with_change_func(self._remote_sdp_set)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
770 self.webrtcbin.emit("set-remote-description", answer, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
771
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
772 async def answer_call(self, sdp: str, profile: str) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
773 """Answer an incoming call
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
774
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
775 @param sdp: The SDP offer string received from the initiator.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
776 @param profile: Profile used for the call.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
777
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
778 @raise AssertionError: Raised when either "VP8" or "OPUS" is not present in
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
779 payload types.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
780 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
781 log.debug(f"SDP offer received: \n{sdp}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
782 self._set_media_types(sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
783 __, offer_sdp_msg = GstSdp.SDPMessage.new_from_text(sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
784 payload_types = self.get_payload_types(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
785 offer_sdp_msg, video_encoding="VP8", audio_encoding="OPUS"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
786 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
787 assert "VP8" in payload_types
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
788 assert "OPUS" in payload_types
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
789 await self.setup_call(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
790 "responder", audio_pt=payload_types["OPUS"], video_pt=payload_types["VP8"]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
791 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
792 self.start_pipeline()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
793 offer = GstWebRTC.WebRTCSessionDescription.new(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
794 GstWebRTC.WebRTCSDPType.OFFER, offer_sdp_msg
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
795 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
796 promise = Gst.Promise.new_with_change_func(self.on_offer_set)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
797 self.webrtcbin.emit("set-remote-description", offer, promise)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
798
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
799 def on_ice_candidate(self, webrtc, mline_index, candidate_sdp):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
800 """Handles the on-ice-candidate signal of webrtcbin.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
801
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
802 @param webrtc: The webrtcbin element.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
803 @param mlineindex: The mline index.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
804 @param candidate: The ICE candidate.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
805 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
806 log.debug(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
807 f"Local ICE candidate. MLine Index: {mline_index}, Candidate: {candidate_sdp}"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
808 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
809 parsed_candidate = self.parse_ice_candidate(candidate_sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
810 try:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
811 media_type = self.media_types[mline_index]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
812 except KeyError:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
813 raise exceptions.InternalError("can't find media type")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
814
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
815 if self.sid is None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
816 log.debug("buffering local ICE candidate")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
817 self.local_candidates_buffer.setdefault(media_type, []).append(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
818 parsed_candidate
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
819 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
820 else:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
821 sdp = self.webrtcbin.props.local_description.sdp.as_text()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
822 assert sdp is not None
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
823 ufrag, pwd = self.extract_ufrag_pwd(sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
824 ice_data = {"ufrag": ufrag, "pwd": pwd, "candidates": [parsed_candidate]}
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
825 self._a_call(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
826 self.bridge.ice_candidates_add,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
827 self.sid,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
828 data_format.serialise({media_type: ice_data}),
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
829 self.profile,
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
830 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
831
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
832 def on_ice_candidates_new(self, candidates: dict) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
833 """Handle new ICE candidates.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
834
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
835 @param candidates: A dictionary containing media types ("audio" or "video") as
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
836 keys and corresponding ICE data as values.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
837
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
838 @raise exceptions.InternalError: Raised when sdp mline index is not found.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
839 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
840 if not self.sdp_set:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
841 log.debug("buffering remote ICE candidate")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
842 for media_type in ("audio", "video"):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
843 media_candidates = candidates.get(media_type)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
844 if media_candidates:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
845 buffer = self.remote_candidates_buffer[media_type]
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
846 buffer["candidates"].extend(media_candidates["candidates"])
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
847 return
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
848 for media_type, ice_data in candidates.items():
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
849 for candidate in ice_data["candidates"]:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
850 candidate_sdp = self.build_ice_candidate(candidate)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
851 try:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
852 mline_index = self.get_sdp_mline_index(media_type)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
853 except Exception as e:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
854 raise exceptions.InternalError(f"Can't find sdp mline index: {e}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
855 self.webrtcbin.emit("add-ice-candidate", mline_index, candidate_sdp)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
856 log.debug(
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
857 f"Remote ICE candidate added. MLine Index: {mline_index}, "
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
858 f"{candidate_sdp}"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
859 )
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
860
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
861 def on_ice_gathering_state_change(self, pspec, __):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
862 state = self.webrtcbin.get_property("ice-gathering-state")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
863 log.debug(f"ICE gathering state changed to {state}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
864
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
865 def on_ice_connection_state(self, pspec, __):
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
866 state = self.webrtcbin.props.ice_connection_state
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
867 if state == GstWebRTC.WebRTCICEConnectionState.FAILED:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
868 log.error("ICE connection failed")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
869 log.info(f"ICE connection state changed to {state}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
870
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
871 def on_bus_error(self, bus: Gst.Bus, message: Gst.Message) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
872 """Handles the GStreamer bus error messages.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
873
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
874 @param bus: The GStreamer bus.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
875 @param message: The error message.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
876 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
877 err, debug = message.parse_error()
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
878 log.error(f"Error from {message.src.get_name()}: {err.message}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
879 log.error(f"Debugging info: {debug}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
880
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
881 def on_bus_eos(self, bus: Gst.Bus, message: Gst.Message) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
882 """Handles the GStreamer bus eos messages.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
883
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
884 @param bus: The GStreamer bus.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
885 @param message: The eos message.
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
886 """
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
887 log.info("End of stream")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
888
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
889 def on_audio_mute(self, muted: bool) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
890 if self.audio_valve is not None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
891 self.audio_valve.set_property("drop", muted)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
892 state = "muted" if muted else "unmuted"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
893 log.info(f"audio is now {state}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
894
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
895 def on_video_mute(self, muted: bool) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
896 if self.video_selector is not None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
897 # when muted, we switch to a black image and deactivate the camera
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
898 if not muted:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
899 self.video_src.set_state(Gst.State.PLAYING)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
900 pad = self.video_selector.get_static_pad("sink_1" if muted else "sink_0")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
901 self.video_selector.props.active_pad = pad
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
902 if muted:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
903 self.video_src.set_state(Gst.State.NULL)
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
904 state = "muted" if muted else "unmuted"
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
905 log.info(f"video is now {state}")
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
906
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
907 async def end_call(self) -> None:
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
908 """Stop streaming and clean instance"""
6745c6bd4c7a frontends (tools): webrtc implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
909 self.reset_instance()