API to Convert Java Bitmap Config to SkBitmap::Config

ui/gfx/android/java_bitmap.cc

Index: ui/gfx/android/java_bitmap.cc
diff --git a/ui/gfx/android/java_bitmap.cc b/ui/gfx/android/java_bitmap.cc
index 0127ec8ae2c051b15cd0a17073556900bf3663e0..d87938b3e5aa93cf7271addec1fa485d9bdd05bc 100644
--- a/ui/gfx/android/java_bitmap.cc
+++ b/ui/gfx/android/java_bitmap.cc
@@ -10,13 +10,19 @@
 #include "base/logging.h"
 #include "jni/BitmapHelper_jni.h"
 #include "skia/ext/image_operations.h"
-#include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/size.h"
 
 using base::android::AttachCurrentThread;
 
 namespace gfx {
 
+static const char kALPHA_8[] = "ALPHA_8";
+static const char kARGB_4444[] = "kARGB_4444";
+static const char kARGB_8888[] = "ARGB_8888";
+static const char kRGB_565[] = "RGB_565";
+static const char kBitmapConfigClassPath[] = "android/graphics/Bitmap$Config";
+static base::subtle::AtomicWord g_BitmapConfig_method = 0;
+
 JavaBitmap::JavaBitmap(jobject bitmap)
     : bitmap_(bitmap),
       pixels_(NULL) {
@@ -102,4 +108,36 @@ SkBitmap CreateSkBitmapFromResource(const char* name, gfx::Size size) {
       bitmap, skia::ImageOperations::RESIZE_BOX, size.width(), size.height());
 }
 
+SkBitmap::Config ToSkiaBitmapConfig(JNIEnv* env,
+                                    jobject bitmap_config)
+{
+  static jclass g_BitmapConfig_clazz = reinterpret_cast<jclass>
+                  (env->NewGlobalRef(base::android::GetClass(env,
+                                     kBitmapConfigClassPath).obj()));
+  DCHECK(g_BitmapConfig_clazz);
+  jmethodID method_id = base::android::MethodID::LazyGet<
+         base::android::MethodID::TYPE_INSTANCE>(env,
+                                                 g_BitmapConfig_clazz,
+                                                 "name",
+                                                 "()Ljava/lang/String;",
+                                                 &g_BitmapConfig_method);
+
+  jstring value = (jstring)env->CallObjectMethod(bitmap_config, method_id);
+  const std::string config_value = base::android::ConvertJavaStringToUTF8(env,

[vivekg, 2014/02/11 17:59:02]

const std::string&

[sivag, 2014/02/13 16:31:52]

Done.

+                                                                        value);
+  base::android::CheckException(env);
+
+  if (config_value.compare(kARGB_8888) == 0) {
+    return SkBitmap::kARGB_8888_Config;
+  } else if (config_value.compare(kRGB_565) == 0) {
+    return SkBitmap::kRGB_565_Config;
+  } else if (config_value.compare(kALPHA_8) == 0) {
+    return SkBitmap::kA8_Config;
+  } else if (config_value.compare(kARGB_4444) == 0) {
+    return SkBitmap::kARGB_4444_Config;
+  }
+
+  return SkBitmap::kNo_Config;
+}
+
 }  //  namespace gfx