Mercurial > libervia-web
annotate libervia/web/pages/_browser/alt_media_player.py @ 1550:4b0464b2a12b
doc: add end-user A/V calls documentation:
rel 423
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 09 Aug 2023 00:22:18 +0200 |
| parents | eb00d593801d |
| children |
| rev | line source |
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| 1337 | 1 #!/usr/bin/env python3 |
| 2 | |
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3 """This module implement an alternative media player |
| 1337 | 4 |
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5 If browser can't play natively some libre video/audio formats, ogv.js will be used, |
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6 otherwise the native player will be used. |
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7 |
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8 This player uses its own controls, this allow better tuning/event handling notably with |
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9 slideshow. |
| 1337 | 10 """ |
| 11 | |
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12 from browser import document, timer, html |
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13 |
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14 |
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15 NO_PAGINATION = "NO_PAGINATION" |
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16 NO_SCROLLBAR = "NO_SCROLLBAR" |
| 1337 | 17 |
| 18 | |
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19 class MediaPlayer: |
| 1337 | 20 TIMER_MODES = ("timer", "remaining") |
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21 # will be set to False if browser can't play natively webm or ogv |
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22 native = True |
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23 # will be set to True when template and modules will be imported |
| 1337 | 24 imports_done = False |
| 25 | |
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26 def __init__( |
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27 self, |
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28 sources, |
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29 to_rpl_vid_elt=None, |
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30 poster=None, |
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31 reduce_click_area=False |
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32 ): |
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33 """ |
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34 @param sources: list of paths to media |
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35 only the first one is used at the moment |
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36 @param to_rpl_vid_elt: video element to replace |
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37 if None, nothing is replaced and element must be inserted manually |
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38 @param reduce_click_area: when True, only center of the element will react to |
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39 click. Useful when used in slideshow, as click on border is used to |
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40 show/hide slide controls |
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41 """ |
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42 self.do_imports() |
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43 |
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44 self.reduce_click_area = reduce_click_area |
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45 |
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46 self.media_player_elt = media_player_elt = media_player_tpl.get_elt() |
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47 self.player = player = self._create_player(sources, poster) |
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48 if to_rpl_vid_elt is not None: |
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49 to_rpl_vid_elt.parentNode.replaceChild(media_player_elt, to_rpl_vid_elt) |
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50 overlay_play_elt = self.media_player_elt.select_one(".media_overlay_play") |
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51 overlay_play_elt.bind("click", self.on_play_click) |
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52 self.progress_elt = media_player_elt.select_one("progress") |
| 1337 | 53 self.progress_elt.bind("click", self.on_progress_click) |
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54 self.timer_elt = media_player_elt.select_one(".timer") |
| 1337 | 55 self.timer_mode = "timer" |
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56 |
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57 self.controls_elt = media_player_elt.select_one(".media_controls") |
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58 # we devnull 2 following events to avoid accidental side effect |
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59 # this is notably useful in slideshow to avoid changing the slide when |
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60 # the user misses slightly a button |
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61 self.controls_elt.bind("mousedown", self._devnull) |
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62 self.controls_elt.bind("click", self._devnull) |
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63 |
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64 player_wrapper_elt = media_player_elt.select_one(".media_elt") |
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65 player.preload = "none" |
| 1337 | 66 player.src = sources[0] |
| 67 player_wrapper_elt <= player | |
| 68 self.hide_controls_timer = None | |
| 69 | |
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70 # we capture mousedown to avoid side effect on slideshow |
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71 player_wrapper_elt.addEventListener("mousedown", self._devnull) |
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72 player_wrapper_elt.addEventListener("click", self.on_player_click) |
| 1337 | 73 |
| 74 # buttons | |
| 75 for handler in ("play", "change_timer_mode", "change_volume", "fullscreen"): | |
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76 for elt in media_player_elt.select(f".click_to_{handler}"): |
| 1337 | 77 elt.bind("click", getattr(self, f"on_{handler}_click")) |
| 78 # events | |
| 79 # FIXME: progress is not implemented in OGV.js, update when available | |
| 80 for event in ("play", "pause", "timeupdate", "ended", "volumechange"): | |
| 81 player.bind(event, getattr(self, f"on_{event}")) | |
| 82 | |
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83 @property |
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84 def elt(self): |
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85 return self.media_player_elt |
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86 |
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87 def _create_player(self, sources, poster): |
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88 """Create player element, using native one when possible""" |
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89 player = None |
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90 if not self.native: |
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91 source = sources[0] |
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92 ext = self.get_source_ext(source) |
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93 if ext is None: |
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94 print( |
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95 f"no extension found for {source}, using native player" |
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96 ) |
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97 elif ext in self.cant_play_ext_list: |
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98 print(f"OGV player user for {source}") |
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99 player = self.ogv.OGVPlayer.new() |
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100 # OGCPlayer has non standard "poster" property |
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101 player.poster = poster |
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102 if player is None: |
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103 player = html.VIDEO(poster=poster) |
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104 return player |
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105 |
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106 def reset(self): |
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107 """Put back media player in intial state |
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108 |
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109 media will be stopped, time will be set to beginning, overlay will be put back |
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110 """ |
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111 print("resetting media player") |
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112 self.player.pause() |
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113 self.player.currentTime = 0 |
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114 self.media_player_elt.classList.remove("in_use") |
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115 |
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116 def _devnull(self, evt): |
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117 # stop an event |
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118 evt.preventDefault() |
| 1337 | 119 evt.stopPropagation() |
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120 |
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121 def on_player_click(self, evt): |
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122 if self.reduce_click_area: |
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123 bounding_rect = self.media_player_elt.getBoundingClientRect() |
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124 margin_x = margin_y = 200 |
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125 if ((evt.clientX - bounding_rect.left < margin_x |
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126 or bounding_rect.right - evt.clientX < margin_x |
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127 or evt.clientY - bounding_rect.top < margin_y |
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128 or bounding_rect.bottom - evt.clientY < margin_y |
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129 )): |
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130 # click is not in the center, we don't handle it and let the event |
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131 # propagate |
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132 return |
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133 self.on_play_click(evt) |
| 1337 | 134 |
| 135 def on_play_click(self, evt): | |
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136 evt.preventDefault() |
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137 evt.stopPropagation() |
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138 self.media_player_elt.classList.add("in_use") |
| 1337 | 139 if self.player.paused: |
| 140 print("playing") | |
| 141 self.player.play() | |
| 142 else: | |
| 143 self.player.pause() | |
| 144 print("paused") | |
| 145 | |
| 146 def on_change_timer_mode_click(self, evt): | |
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147 evt.preventDefault() |
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148 evt.stopPropagation() |
| 1337 | 149 self.timer_mode = self.TIMER_MODES[ |
| 150 (self.TIMER_MODES.index(self.timer_mode) + 1) % len(self.TIMER_MODES) | |
| 151 ] | |
| 152 | |
| 153 def on_change_volume_click(self, evt): | |
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154 evt.stopPropagation() |
| 1337 | 155 self.player.muted = not self.player.muted |
| 156 | |
| 157 def on_fullscreen_click(self, evt): | |
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158 evt.stopPropagation() |
| 1337 | 159 try: |
| 160 fullscreen_elt = document.fullscreenElement | |
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161 request_fullscreen = self.media_player_elt.requestFullscreen |
| 1337 | 162 except AttributeError: |
| 163 print("fullscreen is not available on this browser") | |
| 164 else: | |
| 165 if fullscreen_elt == None: | |
| 166 print("requesting fullscreen") | |
| 167 request_fullscreen() | |
| 168 else: | |
| 169 print(f"leaving fullscreen: {fullscreen_elt}") | |
| 170 try: | |
| 171 document.exitFullscreen() | |
| 172 except AttributeError: | |
| 173 print("exitFullscreen not available on this browser") | |
| 174 | |
| 175 def on_progress_click(self, evt): | |
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176 evt.stopPropagation() |
| 1337 | 177 position = evt.offsetX / evt.target.width |
| 178 new_time = self.player.duration * position | |
| 179 self.player.currentTime = new_time | |
| 180 | |
| 181 def on_play(self, evt): | |
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182 self.media_player_elt.classList.add("playing") |
| 1337 | 183 self.show_controls() |
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184 self.media_player_elt.bind("mousemove", self.on_mouse_move) |
| 1337 | 185 |
| 186 def on_pause(self, evt): | |
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187 self.media_player_elt.classList.remove("playing") |
| 1337 | 188 self.show_controls() |
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189 self.media_player_elt.unbind("mousemove") |
| 1337 | 190 |
| 191 def on_timeupdate(self, evt): | |
| 192 self.update_progress() | |
| 193 | |
| 194 def on_ended(self, evt): | |
| 195 self.update_progress() | |
| 196 | |
| 197 def on_volumechange(self, evt): | |
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198 evt.stopPropagation() |
| 1337 | 199 if self.player.muted: |
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200 self.media_player_elt.classList.add("muted") |
| 1337 | 201 else: |
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202 self.media_player_elt.classList.remove("muted") |
| 1337 | 203 |
| 204 def on_mouse_move(self, evt): | |
| 205 self.show_controls() | |
| 206 | |
| 207 def update_progress(self): | |
| 208 duration = self.player.duration | |
| 209 current_time = duration if self.player.ended else self.player.currentTime | |
| 210 self.progress_elt.max = duration | |
| 211 self.progress_elt.value = current_time | |
| 212 self.progress_elt.text = f"{current_time/duration*100:.02f}" | |
| 213 current_time, duration = int(current_time), int(duration) | |
| 214 if self.timer_mode == "timer": | |
| 215 cur_min, cur_sec = divmod(current_time, 60) | |
| 216 tot_min, tot_sec = divmod(duration, 60) | |
| 217 self.timer_elt.text = f"{cur_min}:{cur_sec:02d}/{tot_min}:{tot_sec:02d}" | |
| 218 elif self.timer_mode == "remaining": | |
| 219 rem_min, rem_sec = divmod(duration - current_time, 60) | |
| 220 self.timer_elt.text = f"{rem_min}:{rem_sec:02d}" | |
| 221 else: | |
| 222 print(f"ERROR: unknown timer mode: {self.timer_mode}") | |
| 223 | |
| 224 def hide_controls(self): | |
| 225 self.controls_elt.classList.add("hidden") | |
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226 self.media_player_elt.style.cursor = "none" |
| 1337 | 227 if self.hide_controls_timer is not None: |
| 228 timer.clear_timeout(self.hide_controls_timer) | |
| 229 self.hide_controls_timer = None | |
| 230 | |
| 231 def show_controls(self): | |
| 232 self.controls_elt.classList.remove("hidden") | |
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233 self.media_player_elt.style.cursor = "" |
| 1337 | 234 if self.hide_controls_timer is not None: |
| 235 timer.clear_timeout(self.hide_controls_timer) | |
| 236 if self.player.paused: | |
| 237 self.hide_controls_timer = None | |
| 238 else: | |
| 239 self.hide_controls_timer = timer.set_timeout(self.hide_controls, 3000) | |
| 240 | |
| 241 @classmethod | |
| 242 def do_imports(cls): | |
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243 # we do imports (notably for ogv.js) only if they are necessary |
| 1337 | 244 if cls.imports_done: |
| 245 return | |
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246 if not cls.native: |
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247 from js_modules import ogv |
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248 cls.ogv = ogv |
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249 if not ogv.OGVCompat.supported('OGVPlayer'): |
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250 print("Can't use OGVPlayer with this browser") |
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251 raise NotImplementedError |
| 1337 | 252 import template |
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253 global media_player_tpl |
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254 media_player_tpl = template.Template("components/media_player.html") |
| 1337 | 255 cls.imports_done = True |
| 256 | |
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257 @staticmethod |
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258 def get_source_ext(source): |
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259 try: |
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260 ext = f".{source.rsplit('.', 1)[1].strip()}" |
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261 except IndexError: |
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262 return None |
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263 return ext or None |
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264 |
| 1337 | 265 @classmethod |
| 266 def install(cls, cant_play): | |
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267 cls.native = False |
| 1337 | 268 ext_list = set() |
| 269 for data in cant_play.values(): | |
| 270 ext_list.update(data['ext']) | |
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271 cls.cant_play_ext_list = ext_list |
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272 for to_rpl_vid_elt in document.body.select('video'): |
| 1337 | 273 sources = [] |
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274 src = (to_rpl_vid_elt.src or '').strip() |
| 1337 | 275 if src: |
| 276 sources.append(src) | |
| 277 | |
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278 for source_elt in to_rpl_vid_elt.select('source'): |
| 1337 | 279 src = (source_elt.src or '').strip() |
| 280 if src: | |
| 281 sources.append(src) | |
| 282 | |
| 283 # FIXME: we only use first found source | |
| 284 try: | |
| 285 source = sources[0] | |
| 286 except IndexError: | |
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287 print(f"Can't find any source for following elt:\n{to_rpl_vid_elt.html}") |
| 1337 | 288 continue |
| 289 | |
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290 ext = cls.get_source_ext(source) |
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291 |
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292 ext = f".{source.rsplit('.', 1)[1]}" |
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293 if ext is None: |
| 1337 | 294 print( |
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295 "No extension found for source of following elt:\n" |
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296 f"{to_rpl_vid_elt.html}" |
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297 ) |
| 1337 | 298 continue |
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299 if ext in ext_list: |
| 1337 | 300 print(f"alternative player will be used for {source!r}") |
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301 cls(sources, to_rpl_vid_elt) |
| 1337 | 302 |
| 303 | |
| 304 def install_if_needed(): | |
| 305 CONTENT_TYPES = { | |
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306 "ogg_theora": {"type": 'video/ogg; codecs="theora"', "ext": [".ogv", ".ogg"]}, |
| 1337 | 307 "webm_vp8": {"type": 'video/webm; codecs="vp8, vorbis"', "ext": [".webm"]}, |
| 308 "webm_vp9": {"type": 'video/webm; codecs="vp9"', "ext": [".webm"]}, | |
| 309 # FIXME: handle audio | |
| 310 # "ogg_vorbis": {"type": 'audio/ogg; codecs="vorbis"', "ext": ".ogg"}, | |
| 311 } | |
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312 test_media_elt = html.VIDEO() |
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313 cant_play = {k:d for k,d in CONTENT_TYPES.items() |
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314 if test_media_elt.canPlayType(d['type']) != "probably"} |
| 1337 | 315 |
| 316 if cant_play: | |
| 317 cant_play_list = '\n'.join(f"- {k} ({d['type']})" for k, d in cant_play.items()) | |
| 318 print( | |
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319 "This browser is incompatible with following content types, using " |
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320 f"alternative:\n{cant_play_list}" |
| 1337 | 321 ) |
| 322 try: | |
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323 MediaPlayer.install(cant_play) |
| 1337 | 324 except NotImplementedError: |
| 325 pass | |
| 326 else: | |
| 327 print("This browser can play natively all requested open video/audio formats") |