Media Remoting: Draw remoting interstitial on poster image.

content/renderer/render_frame_impl.cc

 // 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 "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 244 matching lines @@
 #include "media/renderers/default_renderer_factory.h"
 #endif
 
 #if defined(ENABLE_MOJO_AUDIO_DECODER) || defined(ENABLE_MOJO_VIDEO_DECODER)
 #include "media/mojo/clients/mojo_decoder_factory.h"  // nogncheck
 #endif
 
 #if BUILDFLAG(ENABLE_MEDIA_REMOTING)
 #include "media/remoting/remoting_cdm_controller.h"       // nogncheck
 #include "media/remoting/remoting_cdm_factory.h"          // nogncheck
-#include "media/remoting/remoting_renderer_controller.h"  // nogncheck
 #include "media/remoting/remoting_renderer_factory.h"     // nogncheck
 #include "media/remoting/remoting_sink_observer.h"        // nogncheck
 #endif
 
 using base::Time;
 using base::TimeDelta;
 using blink::WebCachePolicy;
 using blink::WebContentDecryptionModule;
 using blink::WebContextMenuData;
 using blink::WebCString;
@@ skipping 2622 matching lines @@
 
 #if defined(OS_ANDROID)  // WMPI_CAST
   media_player->SetMediaPlayerManager(GetMediaPlayerManager());
   media_player->SetDeviceScaleFactor(render_view_->GetDeviceScaleFactor());
   media_player->SetUseFallbackPath(use_fallback_path);
 #endif  // defined(OS_ANDROID)
 
 #if BUILDFLAG(ENABLE_MEDIA_REMOTING)
   remoting_controller_ptr->SetSwitchRendererCallback(base::Bind(
       &media::WebMediaPlayerImpl::ScheduleRestart, media_player->AsWeakPtr()));
+  remoting_controller_ptr->SetDownloadPosterCallback(
+      base::Bind(&RenderFrameImpl::DownloadPoster, weak_factory_.GetWeakPtr()));
 #endif
   return media_player;
 }
 
 blink::WebApplicationCacheHost* RenderFrameImpl::createApplicationCacheHost(
     blink::WebApplicationCacheHostClient* client) {
   if (!frame_ || !frame_->view())
     return NULL;
   return new RendererWebApplicationCacheHostImpl(
       RenderViewImpl::FromWebView(frame_->view()), client,
@@ skipping 3741 matching lines @@
   // And then the mouse event is forwarded to blink, which dispatches it to the
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+void RenderFrameImpl::DownloadPoster(
+    const GURL& url,
+    const media::RemotingRendererController::PosterDownloadedCallback& cb) {
+  if (cb.is_null())
+    return;
+
+  if (!poster_image_downloader_)
+    poster_image_downloader_.reset(new ImageDownloaderImpl(this));
+  poster_image_downloader_->DownloadImage(
+      url, false, 1920 * 1920, false,

[miu, 2016/11/29 22:56:08]

1920*1920 seems arbitrary, and some poster images could be very high res (4K or
more?). Since you're handling the down-scaling yourself, and so you really don't
want ImageDownloaderImpl to do anything here, how about making this
std::numeric_limits<uint32_t>::max()?

[xjz, 2016/12/02 19:23:10]

Not applicable.

+      base::Bind(&RenderFrameImpl::PosterDownloaded, weak_factory_.GetWeakPtr(),
+                 cb));
+}
+
+void RenderFrameImpl::PosterDownloaded(
+    const media::RemotingRendererController::PosterDownloadedCallback& cb,
+    int32_t http_status_code,
+    const std::vector<SkBitmap>& images,
+    const std::vector<gfx::Size>& sizes) {
+  DCHECK(!cb.is_null());
+  cb.Run(images[0]);
+}
+#endif
+
 }  // namespace content