Rename DesktopMediaPickerModel[Impl]->[Native]DesktopMediaList

chrome/browser/media/desktop_media_picker_model.cc

Index: chrome/browser/media/desktop_media_picker_model.cc
diff --git a/chrome/browser/media/desktop_media_picker_model.cc b/chrome/browser/media/desktop_media_picker_model.cc
deleted file mode 100644
index 4ce788aba4c3396b7ec76a7972140d30c6e8fe47..0000000000000000000000000000000000000000
--- a/chrome/browser/media/desktop_media_picker_model.cc
+++ /dev/null
@@ -1,337 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/media/desktop_media_picker_model.h"
-
-#include <map>
-
-#include "base/hash.h"
-#include "base/logging.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/threading/sequenced_worker_pool.h"
-#include "content/public/browser/browser_thread.h"
-#include "grit/generated_resources.h"
-#include "media/base/video_util.h"
-#include "third_party/libyuv/include/libyuv/scale_argb.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
-#include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
-#include "third_party/webrtc/modules/desktop_capture/window_capturer.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/gfx/skia_util.h"
-
-using content::BrowserThread;
-using content::DesktopMediaID;
-
-namespace {
-
-// Update the list every second.
-const int kDefaultUpdatePeriod = 1000;
-
-// Returns a hash of a DesktopFrame content to detect when image for a desktop
-// media source has changed.
-uint32 GetFrameHash(webrtc::DesktopFrame* frame) {
-  int data_size = frame->stride() * frame->size().height();
-  return base::SuperFastHash(reinterpret_cast<char*>(frame->data()), data_size);
-}
-
-gfx::ImageSkia ScaleDesktopFrame(scoped_ptr<webrtc::DesktopFrame> frame,
-                                 gfx::Size size) {
-  gfx::Rect scaled_rect = media::ComputeLetterboxRegion(
-      gfx::Rect(0, 0, size.width(), size.height()),
-      gfx::Size(frame->size().width(), frame->size().height()));
-
-  SkBitmap result;
-  result.setConfig(SkBitmap::kARGB_8888_Config,
-                   scaled_rect.width(), scaled_rect.height(), 0,
-                   kOpaque_SkAlphaType);
-  result.allocPixels();
-  result.lockPixels();
-
-  uint8* pixels_data = reinterpret_cast<uint8*>(result.getPixels());
-  libyuv::ARGBScale(frame->data(), frame->stride(),
-                    frame->size().width(), frame->size().height(),
-                    pixels_data, result.rowBytes(),
-                    scaled_rect.width(), scaled_rect.height(),
-                    libyuv::kFilterBilinear);
-
-  // Set alpha channel values to 255 for all pixels.
-  // TODO(sergeyu): Fix screen/window capturers to capture alpha channel and
-  // remove this code. Currently screen/window capturers (at least some
-  // implementations) only capture R, G and B channels and set Alpha to 0.
-  // crbug.com/264424
-  for (int y = 0; y < result.height(); ++y) {
-    for (int x = 0; x < result.width(); ++x) {
-      pixels_data[result.rowBytes() * y + x * result.bytesPerPixel() + 3] =
-          0xff;
-    }
-  }
-
-  result.unlockPixels();
-
-  return gfx::ImageSkia::CreateFrom1xBitmap(result);
-}
-
-}  // namespace
-
-DesktopMediaPickerModel::Source::Source(DesktopMediaID id, const string16& name)
-    : id(id),
-      name(name) {
-}
-
-DesktopMediaPickerModelImpl::SourceDescription::SourceDescription(
-    DesktopMediaID id,
-    const string16& name)
-    : id(id),
-      name(name) {
-}
-
-class DesktopMediaPickerModelImpl::Worker
-    : public webrtc::DesktopCapturer::Callback {
- public:
-  Worker(base::WeakPtr<DesktopMediaPickerModelImpl> model,
-         scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-         scoped_ptr<webrtc::WindowCapturer> window_capturer);
-  virtual ~Worker();
-
-  void Refresh(const gfx::Size& thumbnail_size,
-               content::DesktopMediaID::Id view_dialog_id);
-
- private:
-  typedef std::map<DesktopMediaID, uint32> ImageHashesMap;
-
-  // webrtc::DesktopCapturer::Callback interface.
-  virtual webrtc::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
-  virtual void OnCaptureCompleted(webrtc::DesktopFrame* frame) OVERRIDE;
-
-  base::WeakPtr<DesktopMediaPickerModelImpl> model_;
-
-  scoped_ptr<webrtc::ScreenCapturer> screen_capturer_;
-  scoped_ptr<webrtc::WindowCapturer> window_capturer_;
-
-  scoped_ptr<webrtc::DesktopFrame> current_frame_;
-
-  ImageHashesMap image_hashes_;
-
-  DISALLOW_COPY_AND_ASSIGN(Worker);
-};
-
-DesktopMediaPickerModelImpl::Worker::Worker(
-    base::WeakPtr<DesktopMediaPickerModelImpl> model,
-    scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-    scoped_ptr<webrtc::WindowCapturer> window_capturer)
-    : model_(model),
-      screen_capturer_(screen_capturer.Pass()),
-      window_capturer_(window_capturer.Pass()) {
-  if (screen_capturer_)
-    screen_capturer_->Start(this);
-  if (window_capturer_)
-    window_capturer_->Start(this);
-}
-
-DesktopMediaPickerModelImpl::Worker::~Worker() {}
-
-void DesktopMediaPickerModelImpl::Worker::Refresh(
-    const gfx::Size& thumbnail_size,
-    content::DesktopMediaID::Id view_dialog_id) {
-  std::vector<SourceDescription> sources;
-
-  if (screen_capturer_) {
-    // TODO(sergeyu): Enumerate each screen when ScreenCapturer supports it.
-    sources.push_back(SourceDescription(DesktopMediaID(
-        DesktopMediaID::TYPE_SCREEN, 0),
-        l10n_util::GetStringUTF16(IDS_DESKTOP_MEDIA_PICKER_SCREEN_NAME)));
-  }
-
-  if (window_capturer_) {
-    webrtc::WindowCapturer::WindowList windows;
-    if (window_capturer_->GetWindowList(&windows)) {
-      for (webrtc::WindowCapturer::WindowList::iterator it = windows.begin();
-           it != windows.end(); ++it) {
-        // Skip the picker dialog window.
-        if (it->id != view_dialog_id) {
-          sources.push_back(SourceDescription(
-              DesktopMediaID(DesktopMediaID::TYPE_WINDOW, it->id),
-              base::UTF8ToUTF16(it->title)));
-        }
-      }
-    }
-  }
-
-  // Sort the list of sources so that they appear in a predictable order.
-  std::sort(sources.begin(), sources.end(), CompareSources);
-
-  // Update list of windows before updating thumbnails.
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&DesktopMediaPickerModelImpl::OnSourcesList, model_, sources));
-
-  ImageHashesMap new_image_hashes;
-
-  // Get a thumbnail for each source.
-  for (size_t i = 0; i < sources.size(); ++i) {
-    SourceDescription& source = sources[i];
-    switch (source.id.type) {
-      case DesktopMediaID::TYPE_SCREEN:
-        screen_capturer_->Capture(webrtc::DesktopRegion());
-        DCHECK(current_frame_);
-        break;
-
-      case DesktopMediaID::TYPE_WINDOW:
-        if (!window_capturer_->SelectWindow(source.id.id))
-          continue;
-        window_capturer_->Capture(webrtc::DesktopRegion());
-        break;
-
-      default:
-        NOTREACHED();
-    }
-
-    // Expect that DesktopCapturer to always captures frames synchronously.
-    // |current_frame_| may be NULL if capture failed (e.g. because window has
-    // been closed).
-    if (current_frame_) {
-      uint32 frame_hash = GetFrameHash(current_frame_.get());
-      new_image_hashes[source.id] = frame_hash;
-
-      // Scale the image only if it has changed.
-      ImageHashesMap::iterator it = image_hashes_.find(source.id);
-      if (it == image_hashes_.end() || it->second != frame_hash) {
-        gfx::ImageSkia thumbnail =
-            ScaleDesktopFrame(current_frame_.Pass(), thumbnail_size);
-        BrowserThread::PostTask(
-            BrowserThread::UI, FROM_HERE,
-            base::Bind(&DesktopMediaPickerModelImpl::OnSourceThumbnail, model_,
-                       i, thumbnail));
-      }
-    }
-  }
-
-  image_hashes_.swap(new_image_hashes);
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&DesktopMediaPickerModelImpl::OnRefreshFinished, model_));
-}
-
-webrtc::SharedMemory* DesktopMediaPickerModelImpl::Worker::CreateSharedMemory(
-    size_t size) {
-  return NULL;
-}
-
-void DesktopMediaPickerModelImpl::Worker::OnCaptureCompleted(
-    webrtc::DesktopFrame* frame) {
-  current_frame_.reset(frame);
-}
-
-DesktopMediaPickerModelImpl::DesktopMediaPickerModelImpl(
-    scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-    scoped_ptr<webrtc::WindowCapturer> window_capturer)
-    : screen_capturer_(screen_capturer.Pass()),
-      window_capturer_(window_capturer.Pass()),
-      update_period_(base::TimeDelta::FromMilliseconds(kDefaultUpdatePeriod)),
-      thumbnail_size_(100, 100),
-      view_dialog_id_(-1),
-      observer_(NULL),
-      weak_factory_(this) {
-  base::SequencedWorkerPool* worker_pool = BrowserThread::GetBlockingPool();
-  capture_task_runner_ = worker_pool->GetSequencedTaskRunner(
-      worker_pool->GetSequenceToken());
-}
-
-DesktopMediaPickerModelImpl::~DesktopMediaPickerModelImpl() {
-  capture_task_runner_->DeleteSoon(FROM_HERE, worker_.release());
-}
-
-void DesktopMediaPickerModelImpl::SetUpdatePeriod(base::TimeDelta period) {
-  DCHECK(!observer_);
-  update_period_ = period;
-}
-
-void DesktopMediaPickerModelImpl::SetThumbnailSize(
-    const gfx::Size& thumbnail_size) {
-  thumbnail_size_ = thumbnail_size;
-}
-
-void DesktopMediaPickerModelImpl::SetViewDialogWindowId(
-    content::DesktopMediaID::Id dialog_id) {
-  view_dialog_id_ = dialog_id;
-}
-
-void DesktopMediaPickerModelImpl::StartUpdating(Observer* observer) {
-  DCHECK(!observer_);
-  DCHECK(screen_capturer_ || window_capturer_);
-
-  observer_ = observer;
-
-  worker_.reset(new Worker(weak_factory_.GetWeakPtr(),
-                           screen_capturer_.Pass(), window_capturer_.Pass()));
-  Refresh();
-}
-
-int DesktopMediaPickerModelImpl::source_count() const {
-  return sources_.size();
-}
-
-const DesktopMediaPickerModel::Source& DesktopMediaPickerModelImpl::source(
-    int index) const {
-  return sources_[index];
-}
-
-// static
-bool DesktopMediaPickerModelImpl::CompareSources(const SourceDescription& a,
-                                             const SourceDescription& b) {
-  return a.id < b.id;
-}
-
-void DesktopMediaPickerModelImpl::Refresh() {
-  capture_task_runner_->PostTask(
-      FROM_HERE, base::Bind(&Worker::Refresh, base::Unretained(worker_.get()),
-                            thumbnail_size_, view_dialog_id_));
-}
-
-void DesktopMediaPickerModelImpl::OnSourcesList(
-    const std::vector<SourceDescription>& new_sources) {
-  // Step through |new_sources| adding and removing entries from |sources_|, and
-  // notifying the |observer_|, until two match. Requires that |sources| and
-  // |sources_| have the same ordering.
-  size_t pos = 0;
-  while (pos < sources_.size() || pos < new_sources.size()) {
-    // If |sources_[pos]| is not in |new_sources| then remove it.
-    if (pos < sources_.size() &&
-        (pos == new_sources.size() || sources_[pos].id < new_sources[pos].id)) {
-      sources_.erase(sources_.begin() + pos);
-      observer_->OnSourceRemoved(pos);
-      continue;
-    }
-
-    if (pos == sources_.size() || !(sources_[pos].id == new_sources[pos].id)) {
-      sources_.insert(sources_.begin() + pos,
-                      Source(new_sources[pos].id, new_sources[pos].name));
-      observer_->OnSourceAdded(pos);
-    } else if (sources_[pos].name != new_sources[pos].name) {
-      sources_[pos].name = new_sources[pos].name;
-      observer_->OnSourceNameChanged(pos);
-    }
-
-    ++pos;
-  }
-
-  DCHECK_EQ(new_sources.size(), sources_.size());
-}
-
-void DesktopMediaPickerModelImpl::OnSourceThumbnail(int index,
-                                                const gfx::ImageSkia& image) {
-  DCHECK_LT(index, static_cast<int>(sources_.size()));
-  sources_[index].thumbnail = image;
-  observer_->OnSourceThumbnailChanged(index);
-}
-
-void DesktopMediaPickerModelImpl::OnRefreshFinished() {
-  BrowserThread::PostDelayedTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&DesktopMediaPickerModelImpl::Refresh,
-                 weak_factory_.GetWeakPtr()),
-      update_period_);
-}