Expose the poster image URL to WebMediaPlayer subclasses

Source/web/WebMediaPlayerClientImpl.cpp

 // Copyright (c) 2009 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 "config.h"
 #include "WebMediaPlayerClientImpl.h"
 
 #include "WebDocument.h"
 #include "WebFrameClient.h"
 #include "WebFrameImpl.h"
 #include "WebHelperPlugin.h"
 #include "WebViewImpl.h"
 #include "core/frame/Frame.h"
 #include "core/html/HTMLMediaElement.h"
+#include "core/html/HTMLVideoElement.h"
 #include "core/html/TimeRanges.h"
 #include "core/rendering/RenderLayerCompositor.h"
 #include "core/rendering/RenderView.h"
 #include "modules/mediastream/MediaStreamRegistry.h"
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/AudioSourceProviderClient.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsContext3D.h"
 #include "platform/graphics/GraphicsLayer.h"
@@ skipping 196 matching lines @@
 }
 
 void WebMediaPlayerClientImpl::loadInternal()
 {
 #if ENABLE(WEB_AUDIO)
     m_audioSourceProvider.wrap(0); // Clear weak reference to m_webMediaPlayer's WebAudioSourceProvider.
 #endif
 
     // FIXME: Remove this cast
     Frame* frame = static_cast<HTMLMediaElement*>(m_client)->document().frame();
+    WebURL poster = static_cast<HTMLVideoElement*>(m_client)->posterImageURL();

[acolwell GONE FROM CHROMIUM, 2014/02/11 02:02:49]

You can't blindly cast like this. m_client may be an HTMLAudioElement. For now,
I think the least hacky thing you can do is to add a mediaPlayerPosterURL()
method to MediaPlayerClient. HTMLMediaElement should have an implementation that
returns an empty URL and HTMLVideoElement should overload this method with
something that returns the actual poster URL. I'm not a huge fan of this, but
it's the best I can think of at the moment.

 
     // This does not actually check whether the hardware can support accelerated
     // compositing, but only if the flag is set. However, this is checked lazily
     // in WebViewImpl::setIsAcceleratedCompositingActive() and will fail there
     // if necessary.
     m_needsWebLayerForVideo = frame->contentRenderer()->compositor()->hasAcceleratedCompositing();
 
     m_webMediaPlayer = createWebMediaPlayer(this, m_url, frame);
     if (m_webMediaPlayer) {
 #if ENABLE(WEB_AUDIO)
         // Make sure if we create/re-create the WebMediaPlayer that we update our wrapper.
         m_audioSourceProvider.wrap(m_webMediaPlayer->audioSourceProvider());
 #endif
 
+        // Tell WebMediaPlayer about the poster image URL.
+        m_webMediaPlayer->setPoster(poster);
+
         // Tell WebMediaPlayer about any connected CDM (may be null).
         m_webMediaPlayer->setContentDecryptionModule(m_cdm);
 
         WebMediaPlayer::CORSMode corsMode = static_cast<WebMediaPlayer::CORSMode>(m_client->mediaPlayerCORSMode());
         m_webMediaPlayer->load(m_loadType, m_url, corsMode);
     }
 }
 
 void WebMediaPlayerClientImpl::play()
 {
@@ skipping 145 matching lines @@
         m_webMediaPlayer->setVolume(volume);
 }
 
 void WebMediaPlayerClientImpl::setMuted(bool muted)
 {
     m_muted = muted;
     if (m_webMediaPlayer)
         m_webMediaPlayer->setVolume(muted ? 0 : m_volume);
 }
 
+void WebMediaPlayerClientImpl::setPoster(const KURL& poster)
+{
+    if (m_webMediaPlayer)
+        m_webMediaPlayer->setPoster(WebURL(poster));
+}
+
 MediaPlayer::NetworkState WebMediaPlayerClientImpl::networkState() const
 {
     if (m_webMediaPlayer)
         return static_cast<MediaPlayer::NetworkState>(m_webMediaPlayer->networkState());
     return MediaPlayer::Empty;
 }
 
 MediaPlayer::ReadyState WebMediaPlayerClientImpl::readyState() const
 {
     if (m_webMediaPlayer)
@@ skipping 249 matching lines @@
 
 void WebMediaPlayerClientImpl::AudioClientImpl::setFormat(size_t numberOfChannels, float sampleRate)
 {
     if (m_client)
         m_client->setFormat(numberOfChannels, sampleRate);
 }
 
 #endif
 
 } // namespace blink