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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/media/native_desktop_media_list.h" | |
| 6 | |
| 7 #include "base/hash.h" | |
| 8 #include "base/strings/utf_string_conversions.h" | |
| 9 #include "base/threading/sequenced_worker_pool.h" | |
| 10 #include "chrome/browser/media/desktop_media_list_observer.h" | |
| 11 #include "chrome/grit/generated_resources.h" | |
| 12 #include "content/public/browser/browser_thread.h" | |
| 13 #include "media/base/video_util.h" | |
| 14 #include "third_party/libyuv/include/libyuv/scale_argb.h" | |
| 15 #include "third_party/skia/include/core/SkBitmap.h" | |
| 16 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" | |
| 17 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h" | |
| 18 #include "third_party/webrtc/modules/desktop_capture/window_capturer.h" | |
| 19 #include "ui/aura/window.h" | |
| 20 #include "ui/base/l10n/l10n_util.h" | |
| 21 #include "ui/snapshot/snapshot.h" | |
| 22 | |
| 23 #if defined(OS_WIN) | |
| 24 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h" | |
| 25 #endif // defined(OS_WIN) | |
| 26 | |
| 27 #if defined(USE_X11) && !defined(OS_CHROMEOS) | |
| 28 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h" | |
| 29 #endif // defined(USE_X11) && !defined(OS_CHROMEOS) | |
| 30 | |
| 31 using content::BrowserThread; | |
| 32 using content::DesktopMediaID; | |
| 33 | |
| 34 namespace { | |
| 35 | |
| 36 // Update the list every second. | |
| 37 const int kDefaultUpdatePeriod = 1000; | |
| 38 | |
| 39 // Returns a hash of a DesktopFrame content to detect when image for a desktop | |
| 40 // media source has changed. | |
| 41 uint32_t GetFrameHash(webrtc::DesktopFrame* frame) { | |
| 42 int data_size = frame->stride() * frame->size().height(); | |
| 43 return base::Hash(reinterpret_cast<char*>(frame->data()), data_size); | |
| 44 } | |
| 45 | |
| 46 gfx::ImageSkia ScaleDesktopFrame(std::unique_ptr<webrtc::DesktopFrame> frame, | |
| 47 gfx::Size size) { | |
| 48 gfx::Rect scaled_rect = media::ComputeLetterboxRegion( | |
| 49 gfx::Rect(0, 0, size.width(), size.height()), | |
| 50 gfx::Size(frame->size().width(), frame->size().height())); | |
| 51 | |
| 52 SkBitmap result; | |
| 53 result.allocN32Pixels(scaled_rect.width(), scaled_rect.height(), true); | |
| 54 result.lockPixels(); | |
| 55 | |
| 56 uint8_t* pixels_data = reinterpret_cast<uint8_t*>(result.getPixels()); | |
| 57 libyuv::ARGBScale(frame->data(), frame->stride(), | |
| 58 frame->size().width(), frame->size().height(), | |
| 59 pixels_data, result.rowBytes(), | |
| 60 scaled_rect.width(), scaled_rect.height(), | |
| 61 libyuv::kFilterBilinear); | |
| 62 | |
| 63 // Set alpha channel values to 255 for all pixels. | |
| 64 // TODO(sergeyu): Fix screen/window capturers to capture alpha channel and | |
| 65 // remove this code. Currently screen/window capturers (at least some | |
| 66 // implementations) only capture R, G and B channels and set Alpha to 0. | |
| 67 // crbug.com/264424 | |
| 68 for (int y = 0; y < result.height(); ++y) { | |
| 69 for (int x = 0; x < result.width(); ++x) { | |
| 70 pixels_data[result.rowBytes() * y + x * result.bytesPerPixel() + 3] = | |
| 71 0xff; | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 result.unlockPixels(); | |
| 76 | |
| 77 return gfx::ImageSkia::CreateFrom1xBitmap(result); | |
| 78 } | |
| 79 | |
| 80 } // namespace | |
| 81 | |
| 82 class NativeDesktopMediaList::Worker | |
| 83 : public webrtc::DesktopCapturer::Callback { | |
| 84 public: | |
| 85 Worker(base::WeakPtr<NativeDesktopMediaList> media_list, | |
| 86 std::unique_ptr<webrtc::ScreenCapturer> screen_capturer, | |
| 87 std::unique_ptr<webrtc::WindowCapturer> window_capturer); | |
| 88 ~Worker() override; | |
| 89 | |
| 90 void Refresh(const DesktopMediaID::Id& view_dialog_id); | |
| 91 | |
| 92 void RefreshThumbnails(const std::vector<DesktopMediaID>& native_ids, | |
| 93 const gfx::Size& thumbnail_size); | |
| 94 | |
| 95 private: | |
| 96 typedef std::map<DesktopMediaID, uint32_t> ImageHashesMap; | |
| 97 | |
| 98 // webrtc::DesktopCapturer::Callback interface. | |
| 99 void OnCaptureResult(webrtc::DesktopCapturer::Result result, | |
| 100 std::unique_ptr<webrtc::DesktopFrame> frame) override; | |
| 101 | |
| 102 base::WeakPtr<NativeDesktopMediaList> media_list_; | |
| 103 | |
| 104 std::unique_ptr<webrtc::ScreenCapturer> screen_capturer_; | |
| 105 std::unique_ptr<webrtc::WindowCapturer> window_capturer_; | |
| 106 | |
| 107 std::unique_ptr<webrtc::DesktopFrame> current_frame_; | |
| 108 | |
| 109 ImageHashesMap image_hashes_; | |
| 110 | |
| 111 DISALLOW_COPY_AND_ASSIGN(Worker); | |
| 112 }; | |
| 113 | |
| 114 NativeDesktopMediaList::Worker::Worker( | |
| 115 base::WeakPtr<NativeDesktopMediaList> media_list, | |
| 116 std::unique_ptr<webrtc::ScreenCapturer> screen_capturer, | |
| 117 std::unique_ptr<webrtc::WindowCapturer> window_capturer) | |
| 118 : media_list_(media_list), | |
| 119 screen_capturer_(std::move(screen_capturer)), | |
| 120 window_capturer_(std::move(window_capturer)) { | |
| 121 if (screen_capturer_) | |
| 122 screen_capturer_->Start(this); | |
| 123 if (window_capturer_) | |
| 124 window_capturer_->Start(this); | |
| 125 } | |
| 126 | |
| 127 NativeDesktopMediaList::Worker::~Worker() {} | |
| 128 | |
| 129 void NativeDesktopMediaList::Worker::Refresh( | |
| 130 const DesktopMediaID::Id& view_dialog_id) { | |
| 131 std::vector<SourceDescription> sources; | |
| 132 | |
| 133 if (screen_capturer_) { | |
| 134 webrtc::ScreenCapturer::ScreenList screens; | |
| 135 if (screen_capturer_->GetScreenList(&screens)) { | |
| 136 bool mutiple_screens = screens.size() > 1; | |
| 137 base::string16 title; | |
| 138 for (size_t i = 0; i < screens.size(); ++i) { | |
| 139 if (mutiple_screens) { | |
| 140 // Just in case 'Screen' is inflected depending on the screen number, | |
| 141 // use plural formatter. | |
| 142 title = l10n_util::GetPluralStringFUTF16( | |
| 143 IDS_DESKTOP_MEDIA_PICKER_MULTIPLE_SCREEN_NAME, | |
| 144 static_cast<int>(i + 1)); | |
| 145 } else { | |
| 146 title = l10n_util::GetStringUTF16( | |
| 147 IDS_DESKTOP_MEDIA_PICKER_SINGLE_SCREEN_NAME); | |
| 148 } | |
| 149 sources.push_back(SourceDescription(DesktopMediaID( | |
| 150 DesktopMediaID::TYPE_SCREEN, screens[i].id), title)); | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 if (window_capturer_) { | |
| 156 webrtc::WindowCapturer::WindowList windows; | |
| 157 if (window_capturer_->GetWindowList(&windows)) { | |
| 158 for (webrtc::WindowCapturer::WindowList::iterator it = windows.begin(); | |
| 159 it != windows.end(); ++it) { | |
| 160 // Skip the picker dialog window. | |
| 161 if (it->id == view_dialog_id) | |
| 162 continue; | |
| 163 | |
| 164 DesktopMediaID media_id(DesktopMediaID::TYPE_WINDOW, it->id); | |
| 165 sources.push_back( | |
| 166 SourceDescription(media_id, base::UTF8ToUTF16(it->title))); | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 BrowserThread::PostTask( | |
| 172 BrowserThread::UI, FROM_HERE, | |
| 173 base::Bind(&NativeDesktopMediaList::RefreshForAuraWindows, media_list_, | |
| 174 sources)); | |
| 175 } | |
| 176 | |
| 177 void NativeDesktopMediaList::Worker::RefreshThumbnails( | |
| 178 const std::vector<DesktopMediaID>& native_ids, | |
| 179 const gfx::Size& thumbnail_size) { | |
| 180 ImageHashesMap new_image_hashes; | |
| 181 | |
| 182 // Get a thumbnail for each native source. | |
| 183 for (const auto& id : native_ids) { | |
| 184 switch (id.type) { | |
| 185 case DesktopMediaID::TYPE_SCREEN: | |
| 186 if (!screen_capturer_->SelectScreen(id.id)) | |
| 187 continue; | |
| 188 screen_capturer_->Capture(webrtc::DesktopRegion()); | |
| 189 break; | |
| 190 | |
| 191 case DesktopMediaID::TYPE_WINDOW: | |
| 192 if (!window_capturer_->SelectWindow(id.id)) | |
| 193 continue; | |
| 194 window_capturer_->Capture(webrtc::DesktopRegion()); | |
| 195 break; | |
| 196 | |
| 197 default: | |
| 198 NOTREACHED(); | |
| 199 } | |
| 200 | |
| 201 // Expect that DesktopCapturer to always captures frames synchronously. | |
| 202 // |current_frame_| may be NULL if capture failed (e.g. because window has | |
| 203 // been closed). | |
| 204 if (current_frame_) { | |
| 205 uint32_t frame_hash = GetFrameHash(current_frame_.get()); | |
| 206 new_image_hashes[id] = frame_hash; | |
| 207 | |
| 208 // Scale the image only if it has changed. | |
| 209 ImageHashesMap::iterator it = image_hashes_.find(id); | |
| 210 if (it == image_hashes_.end() || it->second != frame_hash) { | |
| 211 gfx::ImageSkia thumbnail = | |
| 212 ScaleDesktopFrame(std::move(current_frame_), thumbnail_size); | |
| 213 BrowserThread::PostTask( | |
| 214 BrowserThread::UI, FROM_HERE, | |
| 215 base::Bind(&NativeDesktopMediaList::UpdateSourceThumbnail, | |
| 216 media_list_, id, thumbnail)); | |
| 217 } | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 image_hashes_.swap(new_image_hashes); | |
| 222 | |
| 223 BrowserThread::PostTask( | |
| 224 BrowserThread::UI, FROM_HERE, | |
| 225 base::Bind(&NativeDesktopMediaList::UpdateNativeThumbnailsFinished, | |
| 226 media_list_)); | |
| 227 } | |
| 228 | |
| 229 void NativeDesktopMediaList::Worker::OnCaptureResult( | |
| 230 webrtc::DesktopCapturer::Result result, | |
| 231 std::unique_ptr<webrtc::DesktopFrame> frame) { | |
| 232 current_frame_ = std::move(frame); | |
| 233 } | |
| 234 | |
| 235 NativeDesktopMediaList::NativeDesktopMediaList( | |
| 236 std::unique_ptr<webrtc::ScreenCapturer> screen_capturer, | |
| 237 std::unique_ptr<webrtc::WindowCapturer> window_capturer) | |
| 238 : DesktopMediaListBase( | |
| 239 base::TimeDelta::FromMilliseconds(kDefaultUpdatePeriod)), | |
| 240 weak_factory_(this) { | |
| 241 base::SequencedWorkerPool* worker_pool = BrowserThread::GetBlockingPool(); | |
| 242 capture_task_runner_ = worker_pool->GetSequencedTaskRunner( | |
| 243 worker_pool->GetSequenceToken()); | |
| 244 | |
| 245 worker_.reset(new Worker(weak_factory_.GetWeakPtr(), | |
| 246 std::move(screen_capturer), | |
| 247 std::move(window_capturer))); | |
| 248 } | |
| 249 | |
| 250 NativeDesktopMediaList::~NativeDesktopMediaList() { | |
| 251 capture_task_runner_->DeleteSoon(FROM_HERE, worker_.release()); | |
| 252 } | |
| 253 | |
| 254 void NativeDesktopMediaList::Refresh() { | |
| 255 #if defined(USE_AURA) | |
| 256 DCHECK_EQ(pending_aura_capture_requests_, 0); | |
| 257 DCHECK(!pending_native_thumbnail_capture_); | |
| 258 new_aura_thumbnail_hashes_.clear(); | |
| 259 #endif | |
| 260 | |
| 261 capture_task_runner_->PostTask( | |
| 262 FROM_HERE, base::Bind(&Worker::Refresh, base::Unretained(worker_.get()), | |
| 263 view_dialog_id_.id)); | |
| 264 } | |
| 265 | |
| 266 void NativeDesktopMediaList::RefreshForAuraWindows( | |
| 267 std::vector<SourceDescription> sources) { | |
| 268 #if defined(USE_AURA) | |
| 269 // Associate aura id with native id. | |
| 270 for (auto& source : sources) { | |
| 271 if (source.id.type != DesktopMediaID::TYPE_WINDOW) | |
| 272 continue; | |
| 273 | |
| 274 aura::Window* aura_window = NULL; | |
| 275 #if defined(OS_WIN) | |
| 276 aura_window = views::DesktopWindowTreeHostWin::GetContentWindowForHWND( | |
| 277 reinterpret_cast<HWND>(source.id.id)); | |
| 278 #elif defined(USE_X11) && !defined(OS_CHROMEOS) | |
| 279 aura_window = | |
| 280 views::DesktopWindowTreeHostX11::GetContentWindowForXID(source.id.id); | |
| 281 #endif // defined(USE_X11) && !defined(OS_CHROMEOS) | |
| 282 if (aura_window) { | |
| 283 DesktopMediaID aura_id = DesktopMediaID::RegisterAuraWindow( | |
| 284 DesktopMediaID::TYPE_WINDOW, aura_window); | |
| 285 source.id.aura_id = aura_id.aura_id; | |
| 286 } | |
| 287 } | |
| 288 #endif // defined(USE_AURA) | |
| 289 | |
| 290 UpdateSourcesList(sources); | |
| 291 | |
| 292 // OnAuraThumbnailCaptured() and UpdateNativeThumbnailsFinished() are | |
| 293 // guaranteed to be excuted after RefreshForAuraWindows() and | |
| 294 // CaptureAuraWindowThumbnail() in the browser UI thread. | |
| 295 // Therefore pending_aura_capture_requests_ will be set the number of aura | |
| 296 // windows to be captured and pending_native_thumbnail_capture_ will be set | |
| 297 // true if native thumbnail capture is needed before OnAuraThumbnailCaptured() | |
| 298 // or UpdateNativeThumbnailsFinished() are called. | |
| 299 std::vector<DesktopMediaID> native_ids; | |
| 300 for (const auto& source : sources) { | |
| 301 #if defined(USE_AURA) | |
| 302 if (source.id.aura_id > DesktopMediaID::kNullId) { | |
| 303 CaptureAuraWindowThumbnail(source.id); | |
| 304 continue; | |
| 305 } | |
| 306 #endif // defined(USE_AURA) | |
| 307 native_ids.push_back(source.id); | |
| 308 } | |
| 309 | |
| 310 if (native_ids.size() > 0) { | |
| 311 #if defined(USE_AURA) | |
| 312 pending_native_thumbnail_capture_ = true; | |
| 313 #endif | |
| 314 capture_task_runner_->PostTask( | |
| 315 FROM_HERE, | |
| 316 base::Bind(&Worker::RefreshThumbnails, base::Unretained(worker_.get()), | |
| 317 native_ids, thumbnail_size_)); | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 void NativeDesktopMediaList::UpdateNativeThumbnailsFinished() { | |
| 322 #if defined(USE_AURA) | |
| 323 DCHECK(pending_native_thumbnail_capture_); | |
| 324 pending_native_thumbnail_capture_ = false; | |
| 325 // Schedule next refresh if native thumbnail captures finished after aura | |
| 326 // thumbnail captures. | |
| 327 if (pending_aura_capture_requests_ == 0) | |
| 328 ScheduleNextRefresh(); | |
| 329 #else | |
| 330 ScheduleNextRefresh(); | |
| 331 #endif // defined(USE_AURA) | |
| 332 } | |
| 333 | |
| 334 #if defined(USE_AURA) | |
| 335 | |
| 336 void NativeDesktopMediaList::CaptureAuraWindowThumbnail( | |
| 337 const DesktopMediaID& id) { | |
| 338 gfx::NativeWindow window = DesktopMediaID::GetAuraWindowById(id); | |
| 339 if (!window) | |
| 340 return; | |
| 341 | |
| 342 gfx::Rect window_rect(window->bounds().width(), window->bounds().height()); | |
| 343 gfx::Rect scaled_rect = media::ComputeLetterboxRegion( | |
| 344 gfx::Rect(thumbnail_size_), window_rect.size()); | |
| 345 | |
| 346 pending_aura_capture_requests_++; | |
| 347 ui::GrabWindowSnapshotAndScaleAsync( | |
| 348 window, window_rect, scaled_rect.size(), BrowserThread::GetBlockingPool(), | |
| 349 base::Bind(&NativeDesktopMediaList::OnAuraThumbnailCaptured, | |
| 350 weak_factory_.GetWeakPtr(), id)); | |
| 351 } | |
| 352 | |
| 353 void NativeDesktopMediaList::OnAuraThumbnailCaptured(const DesktopMediaID& id, | |
| 354 const gfx::Image& image) { | |
| 355 if (!image.IsEmpty()) { | |
| 356 // Only new or changed thumbnail need update. | |
| 357 new_aura_thumbnail_hashes_[id] = GetImageHash(image); | |
| 358 if (!previous_aura_thumbnail_hashes_.count(id) || | |
| 359 previous_aura_thumbnail_hashes_[id] != new_aura_thumbnail_hashes_[id]) { | |
| 360 UpdateSourceThumbnail(id, image.AsImageSkia()); | |
| 361 } | |
| 362 } | |
| 363 | |
| 364 // After all aura windows are processed, schedule next refresh; | |
| 365 pending_aura_capture_requests_--; | |
| 366 DCHECK_GE(pending_aura_capture_requests_, 0); | |
| 367 if (pending_aura_capture_requests_ == 0) { | |
| 368 previous_aura_thumbnail_hashes_ = std::move(new_aura_thumbnail_hashes_); | |
| 369 // Schedule next refresh if aura thumbnail captures finished after native | |
| 370 // thumbnail captures. | |
| 371 if (!pending_native_thumbnail_capture_) | |
| 372 ScheduleNextRefresh(); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 #endif // defined(USE_AURA) | |
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Chromium Code Reviews
Issue 2307083002:
Cleanup: move WebRTC related files from chrome/browser/media to chrome/browser/media/webrtc/ (Closed)
