4 files changed, 39 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/android/MediaLayer.cpp b/WebCore/platform/graphics/android/MediaLayer.cpp
index 9c370a5..e4ccbdb 100644
--- a/WebCore/platform/graphics/android/MediaLayer.cpp
+++ b/WebCore/platform/graphics/android/MediaLayer.cpp
@@ -46,6 +46,7 @@ MediaLayer::MediaLayer() : LayerAndroid(false)
     m_bufferedTexture = new MediaTexture(EGL_NO_CONTEXT);
     m_bufferedTexture->incStrong(this);
     m_currentTextureInfo = 0;
+    m_isContentInverted = false;
     XLOG("Creating Media Layer %p", this);
 }
 
@@ -54,6 +55,7 @@ MediaLayer::MediaLayer(const MediaLayer& layer) : LayerAndroid(layer)
     m_bufferedTexture = layer.getTexture();
     m_bufferedTexture->incStrong(this);
     m_currentTextureInfo = 0;
+    m_isContentInverted = layer.m_isContentInverted;
     XLOG("Creating Media Layer Copy %p -> %p", &layer, this);
 }
 
@@ -71,6 +73,14 @@ bool MediaLayer::drawGL(SkMatrix& matrix)
             SkRect rect;
             rect.set(0, 0, getSize().width(), getSize().height());
             TransformationMatrix m = drawTransform();
+
+            // the layer's shader draws the content inverted so we must undo
+            // that change in the transformation matrix
+            if (!m_isContentInverted) {
+                m.flipY();
+                m.translate(0, -getSize().height());
+            }
+
             TilesManager::instance()->shader()->drawLayerQuad(m, rect,
                                                               textureInfo->m_textureId,
                                                               1.0f); //TODO fix this m_drawOpacity
diff --git a/WebCore/platform/graphics/android/MediaLayer.h b/WebCore/platform/graphics/android/MediaLayer.h
index eb56440..1944512 100644
--- a/WebCore/platform/graphics/android/MediaLayer.h
+++ b/WebCore/platform/graphics/android/MediaLayer.h
@@ -54,6 +54,7 @@ public:
     void setCurrentTextureInfo(TextureInfo* info) { m_currentTextureInfo = info; }
     TextureInfo* getCurrentTextureInfo() const { return m_currentTextureInfo; }
 
+    void invertContents(bool invertContent) { m_isContentInverted = invertContent; }
 
 private:
 
@@ -62,6 +63,7 @@ private:
 
     TextureInfo* m_currentTextureInfo;
 
+    bool m_isContentInverted;
 };
 
 } // namespace WebCore
diff --git a/WebKit/android/plugins/ANPOpenGLInterface.cpp b/WebKit/android/plugins/ANPOpenGLInterface.cpp
index 55eb3e0..8f5f9b4 100644
--- a/WebKit/android/plugins/ANPOpenGLInterface.cpp
+++ b/WebKit/android/plugins/ANPOpenGLInterface.cpp
@@ -30,6 +30,11 @@
 #include "PluginView.h"
 #include "PluginWidgetAndroid.h"
 #include "MediaLayer.h"
+#include "WebViewCore.h"
+#include "Frame.h"
+#include "Page.h"
+#include "Chrome.h"
+#include "ChromeClient.h"
 
 using namespace android;
 
@@ -84,6 +89,21 @@ static void anp_releaseTexture(NPP instance, const ANPTextureInfo* textureInfo)
     texture->producerReleaseAndSwap();
 }
 
+static void anp_invertPluginContent(NPP instance, bool isContentInverted) {
+    WebCore::PluginView* pluginView = pluginViewForInstance(instance);
+    PluginWidgetAndroid* pluginWidget = pluginView->platformPluginWidget();
+    WebCore::MediaLayer* mediaLayer = pluginWidget->getLayer();
+
+    mediaLayer->invertContents(isContentInverted);
+
+    //force the layer to sync to the UI thread
+    WebViewCore* wvc = pluginWidget->webViewCore();
+    if (wvc)
+        wvc->mainFrame()->page()->chrome()->client()->scheduleCompositingLayerSync();
+}
+
+
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #define ASSIGN(obj, name)   (obj)->name = anp_##name
@@ -94,4 +114,5 @@ void ANPOpenGLInterfaceV0_Init(ANPInterface* v) {
     ASSIGN(i, acquireContext);
     ASSIGN(i, lockTexture);
     ASSIGN(i, releaseTexture);
+    ASSIGN(i, invertPluginContent);
 }
diff --git a/WebKit/android/plugins/ANPOpenGL_npapi.h b/WebKit/android/plugins/ANPOpenGL_npapi.h
index bfca0dd..5aabbc4 100644
--- a/WebKit/android/plugins/ANPOpenGL_npapi.h
+++ b/WebKit/android/plugins/ANPOpenGL_npapi.h
@@ -52,6 +52,12 @@ struct ANPOpenGLInterfaceV0 : ANPInterface {
     /**
      */
     void (*releaseTexture)(NPP instance, const ANPTextureInfo*);
+
+    /**
+     * Invert the contents of the plugin on the y-axis.
+     * default is to not be inverted (i.e. use OpenGL coordinates)
+     */
+    void (*invertPluginContent)(NPP instance, bool isContentInverted);
 };
 
 #endif //ANPOpenGL_npapi_H