Initial Contribution

1 files changed, 85 insertions, 0 deletions

diff --git a/core/jni/android_graphics_PixelFormat.cpp b/core/jni/android_graphics_PixelFormat.cpp
new file mode 100644
index 0000000..0643622
--- /dev/null
+++ b/core/jni/android_graphics_PixelFormat.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <assert.h>
+
+#include <ui/PixelFormat.h>
+
+#include "jni.h"
+#include <android_runtime/AndroidRuntime.h>
+#include <utils/misc.h>
+
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+struct offsets_t {
+    jfieldID bytesPerPixel;
+    jfieldID bitsPerPixel;
+};
+
+static offsets_t offsets;
+
+static void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL)
+{
+    jclass npeClazz = env->FindClass(exc);
+    env->ThrowNew(npeClazz, msg);
+}
+
+// ----------------------------------------------------------------------------
+
+static void android_graphics_getPixelFormatInfo(
+        JNIEnv* env, jobject clazz, jint format, jobject pixelFormatObject)
+{
+    PixelFormatInfo info;
+    status_t err = getPixelFormatInfo(format, &info);
+    if (err < 0) {
+        doThrow(env, "java/lang/IllegalArgumentException");
+        return;
+    }
+    env->SetIntField(pixelFormatObject, offsets.bytesPerPixel, info.bytesPerPixel);
+    env->SetIntField(pixelFormatObject, offsets.bitsPerPixel,  info.bitsPerPixel);
+}
+// ----------------------------------------------------------------------------
+
+const char* const kClassPathName = "android/graphics/PixelFormat";
+
+static void nativeClassInit(JNIEnv* env, jclass clazz);
+
+static JNINativeMethod gMethods[] = {
+    {   "nativeClassInit", "()V",
+        (void*)nativeClassInit },
+	{   "getPixelFormatInfo", "(ILandroid/graphics/PixelFormat;)V",
+        (void*)android_graphics_getPixelFormatInfo
+    }
+};
+
+void nativeClassInit(JNIEnv* env, jclass clazz)
+{
+    offsets.bytesPerPixel = env->GetFieldID(clazz, "bytesPerPixel", "I");
+    offsets.bitsPerPixel  = env->GetFieldID(clazz, "bitsPerPixel", "I");    
+}
+
+int register_android_graphics_PixelFormat(JNIEnv* env)
+{
+    return AndroidRuntime::registerNativeMethods(env,
+            kClassPathName, gMethods, NELEM(gMethods));
+}
+
+};