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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
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