Add initial support for OpenGL plugins.

bug: 2907737
Change-Id: I6f4f21146c834554db5ecb67fed8994f1cdc2cfe

5 files changed, 193 insertions, 0 deletions

diff --git a/WebKit/android/plugins/ANPOpenGLInterface.cpp b/WebKit/android/plugins/ANPOpenGLInterface.cpp
new file mode 100644
index 0000000..55eb3e0
--- /dev/null
+++ b/WebKit/android/plugins/ANPOpenGLInterface.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// must include config.h first for webkit to fiddle with new/delete
+#include "config.h"
+
+#include "ANPOpenGL_npapi.h"
+#include "PluginView.h"
+#include "PluginWidgetAndroid.h"
+#include "MediaLayer.h"
+
+using namespace android;
+
+static WebCore::PluginView* pluginViewForInstance(NPP instance) {
+    if (instance && instance->ndata)
+        return static_cast<WebCore::PluginView*>(instance->ndata);
+    return WebCore::PluginView::currentPluginView();
+}
+
+static EGLContext anp_acquireContext(NPP instance) {
+    WebCore::PluginView* pluginView = pluginViewForInstance(instance);
+    PluginWidgetAndroid* pluginWidget = pluginView->platformPluginWidget();
+    WebCore::MediaLayer* mediaLayer = pluginWidget->getLayer();
+
+    if (!mediaLayer)
+        return EGL_NO_CONTEXT;
+
+    return mediaLayer->getTexture()->producerAcquireContext();
+}
+
+static ANPTextureInfo anp_lockTexture(NPP instance) {
+    WebCore::PluginView* pluginView = pluginViewForInstance(instance);
+    PluginWidgetAndroid* pluginWidget = pluginView->platformPluginWidget();
+    WebCore::MediaLayer* mediaLayer = pluginWidget->getLayer();
+    WebCore::DoubleBufferedTexture* texture = mediaLayer->getTexture();
+
+    // lock the texture and cache the internal info
+    WebCore::TextureInfo* info = texture->producerLock();
+    mediaLayer->setCurrentTextureInfo(info);
+
+    ANPTextureInfo anpInfo;
+    anpInfo.textureId = info->m_textureId;
+    anpInfo.width = info->m_width;
+    anpInfo.height = info->m_height;
+    anpInfo.internalFormat = info->m_internalFormat;
+    return anpInfo;
+}
+
+static void anp_releaseTexture(NPP instance, const ANPTextureInfo* textureInfo) {
+    WebCore::PluginView* pluginView = pluginViewForInstance(instance);
+    PluginWidgetAndroid* pluginWidget = pluginView->platformPluginWidget();
+    WebCore::MediaLayer* mediaLayer = pluginWidget->getLayer();
+    WebCore::DoubleBufferedTexture* texture = mediaLayer->getTexture();
+
+    //copy the info into our internal structure
+    WebCore::TextureInfo* info =  mediaLayer->getCurrentTextureInfo();
+    info->m_textureId = textureInfo->textureId;
+    info->m_width = textureInfo->width;
+    info->m_height = textureInfo->height;
+    info->m_internalFormat = textureInfo->internalFormat;
+
+    texture->producerReleaseAndSwap();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+#define ASSIGN(obj, name)   (obj)->name = anp_##name
+
+void ANPOpenGLInterfaceV0_Init(ANPInterface* v) {
+    ANPOpenGLInterfaceV0* i = reinterpret_cast<ANPOpenGLInterfaceV0*>(v);
+
+    ASSIGN(i, acquireContext);
+    ASSIGN(i, lockTexture);
+    ASSIGN(i, releaseTexture);
+}
diff --git a/WebKit/android/plugins/ANPOpenGL_npapi.h b/WebKit/android/plugins/ANPOpenGL_npapi.h
new file mode 100644
index 0000000..bfca0dd
--- /dev/null
+++ b/WebKit/android/plugins/ANPOpenGL_npapi.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ANPOpenGL_npapi_H
+#define ANPOpenGL_npapi_H
+
+#include "android_npapi.h"
+#include <EGL/egl.h>
+#include <GLES2/gl2.h>
+
+/**
+ * TODO should we not use EGL and GL data types for ABI safety?
+ */
+struct ANPTextureInfo {
+    GLuint      textureId;
+    uint32_t    width;
+    uint32_t    height;
+    GLenum      internalFormat;
+};
+
+struct ANPOpenGLInterfaceV0 : ANPInterface {
+    /**
+     */
+    EGLContext (*acquireContext)(NPP instance);
+
+    /**
+     */
+    ANPTextureInfo (*lockTexture)(NPP instance);
+
+    /**
+     */
+    void (*releaseTexture)(NPP instance, const ANPTextureInfo*);
+};
+
+#endif //ANPOpenGL_npapi_H
diff --git a/WebKit/android/plugins/PluginWidgetAndroid.cpp b/WebKit/android/plugins/PluginWidgetAndroid.cpp
index b90b53b..83bc8cb 100644
--- a/WebKit/android/plugins/PluginWidgetAndroid.cpp
+++ b/WebKit/android/plugins/PluginWidgetAndroid.cpp
@@ -71,6 +71,7 @@ PluginWidgetAndroid::PluginWidgetAndroid(WebCore::PluginView* view)
     m_embeddedViewAttached = false;
     m_acceptEvents = false;
     m_isSurfaceClippedOut = false;
+    m_layer = 0;
 }
 
 PluginWidgetAndroid::~PluginWidgetAndroid() {
@@ -93,6 +94,9 @@ PluginWidgetAndroid::~PluginWidgetAndroid() {
     }
 
     m_flipPixelRef->safeUnref();
+
+    if (m_layer)
+        m_layer->unref();
 }
 
 void PluginWidgetAndroid::init(android::WebViewCore* core) {
@@ -135,6 +139,17 @@ void PluginWidgetAndroid::setWindow(NPWindow* window, bool isTransparent) {
 }
 
 bool PluginWidgetAndroid::setDrawingModel(ANPDrawingModel model) {
+
+    if (model == kOpenGL_ANPDrawingModel && m_layer == 0)
+        m_layer = new WebCore::MediaLayer();
+    else if (model != kOpenGL_ANPDrawingModel && m_layer != 0)
+        m_layer->unref();
+
+    if (m_drawingModel != model) {
+        // Trigger layer computation in RenderLayerCompositor
+        m_pluginView->getElement()->setNeedsStyleRecalc(SyntheticStyleChange);
+    }
+
     m_drawingModel = model;
     return true;
 }
@@ -347,6 +362,17 @@ void PluginWidgetAndroid::setVisibleScreen(const ANPRectI& visibleDocRect, float
 #endif
     // TODO update the bitmap size based on the zoom? (for kBitmap_ANPDrawingModel)
 
+    // notify the plugin of the new size
+    // TODO what if the plugin changes sizes?
+    if (m_drawingModel == kOpenGL_ANPDrawingModel && m_zoomLevel != zoom) {
+        ANPEvent event;
+        SkANP::InitEvent(&event, kDraw_ANPEventType);
+        event.data.draw.model = kOpenGL_ANPDrawingModel;
+        event.data.draw.data.surface.width = m_pluginWindow->width * zoom;
+        event.data.draw.data.surface.height = m_pluginWindow->height * zoom;
+        sendEvent(event);
+    }
+
     int oldScreenW = m_visibleDocRect.width();
     int oldScreenH = m_visibleDocRect.height();
 
diff --git a/WebKit/android/plugins/PluginWidgetAndroid.h b/WebKit/android/plugins/PluginWidgetAndroid.h
index 162fb1d..974fbf0 100644
--- a/WebKit/android/plugins/PluginWidgetAndroid.h
+++ b/WebKit/android/plugins/PluginWidgetAndroid.h
@@ -29,6 +29,7 @@
 #include "android_npapi.h"
 #include "IntPoint.h"
 #include "IntRect.h"
+#include "MediaLayer.h"
 #include "SkRect.h"
 #include <jni.h>
 
@@ -79,6 +80,8 @@ struct PluginWidgetAndroid {
      */
     bool isSurfaceDrawingModel() const { return kSurface_ANPDrawingModel == m_drawingModel; }
 
+    bool isOpenGLDrawingModel() const { return kOpenGL_ANPDrawingModel == m_drawingModel; }
+
     /*  Returns true (and optionally updates rect with the dirty bounds in the
         page coordinate) if the plugin has invalidate us.
      */
@@ -163,10 +166,14 @@ struct PluginWidgetAndroid {
      */
     void requestCenterFitZoom();
 
+    WebCore::MediaLayer* getLayer() const { return m_layer; }
+
 private:
     void computeVisiblePluginRect();
     void scrollToVisiblePluginRect();
 
+    WebCore::MediaLayer*   m_layer;
+
     WebCore::PluginView*    m_pluginView;
     android::WebViewCore*   m_core;
     SkFlipPixelRef*         m_flipPixelRef;
diff --git a/WebKit/android/plugins/android_npapi.h b/WebKit/android/plugins/android_npapi.h
index 87ca8cc..a99666e 100644
--- a/WebKit/android/plugins/android_npapi.h
+++ b/WebKit/android/plugins/android_npapi.h
@@ -121,6 +121,7 @@ typedef uint32_t ANPMatrixFlag;
 #define kEventInterfaceV0_ANPGetValue       ((NPNVariable)1011)
 
 #define kAudioTrackInterfaceV1_ANPGetValue  ((NPNVariable)1012)
+#define kOpenGLInterfaceV0_ANPGetValue      ((NPNVariable)1013)
 
 /** queries for the drawing models supported on this device.
 
@@ -182,6 +183,7 @@ enum ANPDrawingModels {
         surface object.
      */
     kSurface_ANPDrawingModel = 1 << 1,
+    kOpenGL_ANPDrawingModel  = 1 << 2,
 };
 typedef int32_t ANPDrawingModel;
 
@@ -929,6 +931,10 @@ struct ANPEvent {
             // use based on the value in model
             union {
                 ANPBitmap   bitmap;
+                struct {
+                    int32_t width;
+                    int32_t height;
+                } surface;
             } data;
         } draw;
         int32_t     other[8];