openpilot v0.6 release

phonelibs/android_frameworks_native/include/android/native_window.h

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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.
+ */
+
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file native_window.h
+ */
+
+#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 {
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
+    WINDOW_FORMAT_RGBA_8888          = 1,
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Unused: 8 bits. **/
+    WINDOW_FORMAT_RGBX_8888          = 2,
+    /** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
+    WINDOW_FORMAT_RGB_565            = 4,
+};
+
+struct ANativeWindow;
+/**
+ * {@link ANativeWindow} is opaque type that provides access to a native window.
+ *
+ * A pointer can be obtained using ANativeWindow_fromSurface().
+ */
+typedef struct ANativeWindow ANativeWindow;
+
+/**
+ * {@link ANativeWindow} is a struct that represents a windows buffer.
+ *
+ * A pointer can be obtained using ANativeWindow_lock().
+ */
+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
+
+/** @} */