1 files changed, 266 insertions, 0 deletions
diff --git a/dom/plugins/base/android/ANPSurface.cpp b/dom/plugins/base/android/ANPSurface.cpp
new file mode 100644
index 000000000..b6a699f28
--- /dev/null
+++ b/dom/plugins/base/android/ANPSurface.cpp
@@ -0,0 +1,266 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <dlfcn.h>
+#include <android/log.h>
+#include "ANPBase.h"
+
+#define LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "GeckoPlugins" , ## args)
+#define ASSIGN(obj, name)   (obj)->name = anp_surface_##name
+
+#define CLEAR_EXCEPTION(env) if (env->ExceptionOccurred()) env->ExceptionClear();
+
+#define ANDROID_REGION_SIZE 512
+
+enum {
+    PIXEL_FORMAT_RGBA_8888   = 1,
+    PIXEL_FORMAT_RGB_565     = 4,
+};
+
+struct SurfaceInfo {
+    uint32_t    w;
+    uint32_t    h;
+    uint32_t    s;
+    uint32_t    usage;
+    uint32_t    format;
+    unsigned char* bits;
+    uint32_t    reserved[2];
+};
+
+typedef struct ARect {
+    int32_t left;
+    int32_t top;
+    int32_t right;
+    int32_t bottom;
+} ARect;
+
+
+// used to cache JNI method and field IDs for Surface Objects
+static struct ANPSurfaceInterfaceJavaGlue {
+    bool        initialized;
+    jmethodID   getSurfaceHolder;
+    jmethodID   getSurface;
+    jfieldID    surfacePointer;
+} gSurfaceJavaGlue;
+
+static struct ANPSurfaceFunctions {
+    bool initialized;
+
+    int (* lock)(void*, SurfaceInfo*, void*);
+    int (* unlockAndPost)(void*);
+
+    void* (* regionConstructor)(void*);
+    void (* setRegion)(void*, ARect const&);
+} gSurfaceFunctions;
+
+
+static inline void* getSurface(JNIEnv* env, jobject view) {
+  if (!env || !view) {
+    return nullptr;
+  }
+
+  if (!gSurfaceJavaGlue.initialized) {
+
+    jclass surfaceViewClass = env->FindClass("android/view/SurfaceView");
+    gSurfaceJavaGlue.getSurfaceHolder = env->GetMethodID(surfaceViewClass, "getHolder", "()Landroid/view/SurfaceHolder;");
+
+    jclass surfaceHolderClass = env->FindClass("android/view/SurfaceHolder");
+    gSurfaceJavaGlue.getSurface = env->GetMethodID(surfaceHolderClass, "getSurface", "()Landroid/view/Surface;");
+
+    jclass surfaceClass = env->FindClass("android/view/Surface");
+    gSurfaceJavaGlue.surfacePointer = env->GetFieldID(surfaceClass,
+        "mSurfacePointer", "I");
+
+    if (!gSurfaceJavaGlue.surfacePointer) {
+      CLEAR_EXCEPTION(env);
+
+      // It was something else in 2.2.
+      gSurfaceJavaGlue.surfacePointer = env->GetFieldID(surfaceClass,
+          "mSurface", "I");
+
+      if (!gSurfaceJavaGlue.surfacePointer) {
+        CLEAR_EXCEPTION(env);
+
+        // And something else in 2.3+
+        gSurfaceJavaGlue.surfacePointer = env->GetFieldID(surfaceClass,
+            "mNativeSurface", "I");
+        
+        CLEAR_EXCEPTION(env);
+      }
+    }
+
+    if (!gSurfaceJavaGlue.surfacePointer) {
+      LOG("Failed to acquire surface pointer");
+      return nullptr;
+    }
+
+    env->DeleteLocalRef(surfaceClass);
+    env->DeleteLocalRef(surfaceViewClass);
+    env->DeleteLocalRef(surfaceHolderClass);
+
+    gSurfaceJavaGlue.initialized = (gSurfaceJavaGlue.surfacePointer != nullptr);
+  }
+
+  jobject holder = env->CallObjectMethod(view, gSurfaceJavaGlue.getSurfaceHolder);
+  jobject surface = env->CallObjectMethod(holder, gSurfaceJavaGlue.getSurface);
+  jint surfacePointer = env->GetIntField(surface, gSurfaceJavaGlue.surfacePointer);
+
+  env->DeleteLocalRef(holder);
+  env->DeleteLocalRef(surface);
+
+  return (void*)surfacePointer;
+}
+
+static ANPBitmapFormat convertPixelFormat(int32_t format) {
+  switch (format) {
+    case PIXEL_FORMAT_RGBA_8888:  return kRGBA_8888_ANPBitmapFormat;
+    case PIXEL_FORMAT_RGB_565:    return kRGB_565_ANPBitmapFormat;
+    default:            return kUnknown_ANPBitmapFormat;
+  }
+}
+
+static int bytesPerPixel(int32_t format) {
+  switch (format) {
+    case PIXEL_FORMAT_RGBA_8888: return 4;
+    case PIXEL_FORMAT_RGB_565: return 2;
+    default: return -1;
+  }
+}
+
+static bool init() {
+  if (gSurfaceFunctions.initialized)
+    return true;
+
+  void* handle = dlopen("libsurfaceflinger_client.so", RTLD_LAZY);
+
+  if (!handle) {
+    LOG("Failed to open libsurfaceflinger_client.so");
+    return false;
+  }
+
+  gSurfaceFunctions.lock = (int (*)(void*, SurfaceInfo*, void*))dlsym(handle, "_ZN7android7Surface4lockEPNS0_11SurfaceInfoEPNS_6RegionEb");
+  gSurfaceFunctions.unlockAndPost = (int (*)(void*))dlsym(handle, "_ZN7android7Surface13unlockAndPostEv");
+
+
+  if (!gSurfaceFunctions.lock) {
+    // Stuff changed in 3.0/4.0
+    handle = dlopen("libgui.so", RTLD_LAZY);
+    gSurfaceFunctions.lock = (int (*)(void*, SurfaceInfo*, void*))dlsym(handle, "_ZN7android7Surface4lockEPNS0_11SurfaceInfoEPNS_6RegionE");
+    gSurfaceFunctions.unlockAndPost = (int (*)(void*))dlsym(handle, "_ZN7android7Surface13unlockAndPostEv");
+  }
+
+  handle = dlopen("libui.so", RTLD_LAZY);
+  if (!handle) {
+    LOG("Failed to open libui.so");
+    return false;
+  }
+
+  gSurfaceFunctions.regionConstructor = (void* (*)(void*))dlsym(handle, "_ZN7android6RegionC1Ev");
+  gSurfaceFunctions.setRegion = (void (*)(void*, ARect const&))dlsym(handle, "_ZN7android6Region3setERKNS_4RectE");
+
+  gSurfaceFunctions.initialized = (gSurfaceFunctions.lock && gSurfaceFunctions.unlockAndPost &&
+                                   gSurfaceFunctions.regionConstructor && gSurfaceFunctions.setRegion);
+  LOG("Initialized? %d\n", gSurfaceFunctions.initialized);
+  return gSurfaceFunctions.initialized;
+}
+
+// FIXME: All of this should be changed to use the equivalent things in AndroidBridge, bug 758612
+static bool anp_surface_lock(JNIEnv* env, jobject surfaceView, ANPBitmap* bitmap, ANPRectI* dirtyRect) {
+  if (!bitmap || !surfaceView) {
+    return false;
+  }
+
+  void* surface = getSurface(env, surfaceView);
+
+  if (!bitmap || !surface) {
+    return false;
+  }
+
+  if (!init()) {
+    return false;
+  }
+
+  void* region = nullptr;
+  if (dirtyRect) {
+    region = malloc(ANDROID_REGION_SIZE);
+    gSurfaceFunctions.regionConstructor(region);
+
+    ARect rect;
+    rect.left = dirtyRect->left;
+    rect.top = dirtyRect->top;
+    rect.right = dirtyRect->right;
+    rect.bottom = dirtyRect->bottom;
+
+    gSurfaceFunctions.setRegion(region, rect);
+  }
+
+  SurfaceInfo info;
+  int err = gSurfaceFunctions.lock(surface, &info, region);
+  if (err < 0) {
+    LOG("Failed to lock surface");
+    return false;
+  }
+
+  // the surface may have expanded the dirty region so we must to pass that
+  // information back to the plugin.
+  if (dirtyRect) {
+    ARect* dirtyBounds = (ARect*)region; // The bounds are the first member, so this should work!
+
+    dirtyRect->left = dirtyBounds->left;
+    dirtyRect->right = dirtyBounds->right;
+    dirtyRect->top = dirtyBounds->top;
+    dirtyRect->bottom = dirtyBounds->bottom;
+  }
+
+  if (region)
+    free(region);
+
+  int bpr = info.s * bytesPerPixel(info.format);
+
+  bitmap->format = convertPixelFormat(info.format);
+  bitmap->width = info.w;
+  bitmap->height = info.h;
+  bitmap->rowBytes = bpr;
+
+  if (info.w > 0 && info.h > 0) {
+    bitmap->baseAddr = info.bits;
+  } else {
+    bitmap->baseAddr = nullptr;
+    return false;
+  }
+
+  return true;
+}
+
+static void anp_surface_unlock(JNIEnv* env, jobject surfaceView) {
+  if (!surfaceView) {
+    return;
+  }
+
+  if (!init()) {
+    return;
+  }
+
+  void* surface = getSurface(env, surfaceView);
+
+  if (!surface) {
+    return;
+  }
+
+  gSurfaceFunctions.unlockAndPost(surface);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+void InitSurfaceInterface(ANPSurfaceInterfaceV0* i) {
+  ASSIGN(i, lock);
+  ASSIGN(i, unlock);
+
+  // setup the java glue struct
+  gSurfaceJavaGlue.initialized = false;
+
+  // setup the function struct
+  gSurfaceFunctions.initialized = false;
+}