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+/*
+ * Copyright (C) 2010 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.
+ */
+
+#ifndef ANDROID_NATIVE_WINDOW_H
+#define ANDROID_NATIVE_WINDOW_H
+
+#include <android/rect.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Pixel formats that a window can use.
+ */
+enum {
+ WINDOW_FORMAT_RGBA_8888 = 1,
+ WINDOW_FORMAT_RGBX_8888 = 2,
+ WINDOW_FORMAT_RGB_565 = 4,
+};
+
+struct ANativeWindow;
+typedef struct ANativeWindow ANativeWindow;
+
+typedef struct ANativeWindow_Buffer {
+ // The number of pixels that are show horizontally.
+ int32_t width;
+
+ // The number of pixels that are shown vertically.
+ int32_t height;
+
+ // The number of *pixels* that a line in the buffer takes in
+ // memory. This may be >= width.
+ int32_t stride;
+
+ // The format of the buffer. One of WINDOW_FORMAT_*
+ int32_t format;
+
+ // The actual bits.
+ void* bits;
+
+ // Do not touch.
+ uint32_t reserved[6];
+} ANativeWindow_Buffer;
+
+/**
+ * Acquire a reference on the given ANativeWindow object. This prevents the object
+ * from being deleted until the reference is removed.
+ */
+void ANativeWindow_acquire(ANativeWindow* window);
+
+/**
+ * Remove a reference that was previously acquired with ANativeWindow_acquire().
+ */
+void ANativeWindow_release(ANativeWindow* window);
+
+/*
+ * Return the current width in pixels of the window surface. Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getWidth(ANativeWindow* window);
+
+/*
+ * Return the current height in pixels of the window surface. Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getHeight(ANativeWindow* window);
+
+/*
+ * Return the current pixel format of the window surface. Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getFormat(ANativeWindow* window);
+
+/*
+ * Change the format and size of the window buffers.
+ *
+ * The width and height control the number of pixels in the buffers, not the
+ * dimensions of the window on screen. If these are different than the
+ * window's physical size, then it buffer will be scaled to match that size
+ * when compositing it to the screen.
+ *
+ * For all of these parameters, if 0 is supplied then the window's base
+ * value will come back in force.
+ *
+ * width and height must be either both zero or both non-zero.
+ *
+ */
+int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window,
+ int32_t width, int32_t height, int32_t format);
+
+/**
+ * Lock the window's next drawing surface for writing.
+ * inOutDirtyBounds is used as an in/out parameter, upon entering the
+ * function, it contains the dirty region, that is, the region the caller
+ * intends to redraw. When the function returns, inOutDirtyBounds is updated
+ * with the actual area the caller needs to redraw -- this region is often
+ * extended by ANativeWindow_lock.
+ */
+int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
+ ARect* inOutDirtyBounds);
+
+/**
+ * Unlock the window's drawing surface after previously locking it,
+ * posting the new buffer to the display.
+ */
+int32_t ANativeWindow_unlockAndPost(ANativeWindow* window);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // ANDROID_NATIVE_WINDOW_H