diff options
Diffstat (limited to 'include/hardware/fb.h')
| l---------[-rw-r--r--] | include/hardware/fb.h | 174 |
1 files changed, 1 insertions, 173 deletions
diff --git a/include/hardware/fb.h b/include/hardware/fb.h index 65720a39..4606b504 100644..120000 --- a/include/hardware/fb.h +++ b/include/hardware/fb.h @@ -1,173 +1 @@ -/* - * Copyright (C) 2008 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_FB_INTERFACE_H -#define ANDROID_FB_INTERFACE_H - -#include <stdint.h> -#include <sys/cdefs.h> -#include <sys/types.h> - -#include <cutils/native_handle.h> - -#include <hardware/hardware.h> - -__BEGIN_DECLS - -#define GRALLOC_HARDWARE_FB0 "fb0" - -/*****************************************************************************/ - - -/*****************************************************************************/ - -typedef struct framebuffer_device_t { - /** - * Common methods of the framebuffer device. This *must* be the first member of - * framebuffer_device_t as users of this structure will cast a hw_device_t to - * framebuffer_device_t pointer in contexts where it's known the hw_device_t references a - * framebuffer_device_t. - */ - struct hw_device_t common; - - /* flags describing some attributes of the framebuffer */ - const uint32_t flags; - - /* dimensions of the framebuffer in pixels */ - const uint32_t width; - const uint32_t height; - - /* frambuffer stride in pixels */ - const int stride; - - /* framebuffer pixel format */ - const int format; - - /* resolution of the framebuffer's display panel in pixel per inch*/ - const float xdpi; - const float ydpi; - - /* framebuffer's display panel refresh rate in frames per second */ - const float fps; - - /* min swap interval supported by this framebuffer */ - const int minSwapInterval; - - /* max swap interval supported by this framebuffer */ - const int maxSwapInterval; - - /* Number of framebuffers supported*/ - const int numFramebuffers; - - int reserved[7]; - - /* - * requests a specific swap-interval (same definition than EGL) - * - * Returns 0 on success or -errno on error. - */ - int (*setSwapInterval)(struct framebuffer_device_t* window, - int interval); - - /* - * This hook is OPTIONAL. - * - * It is non NULL If the framebuffer driver supports "update-on-demand" - * and the given rectangle is the area of the screen that gets - * updated during (*post)(). - * - * This is useful on devices that are able to DMA only a portion of - * the screen to the display panel, upon demand -- as opposed to - * constantly refreshing the panel 60 times per second, for instance. - * - * Only the area defined by this rectangle is guaranteed to be valid, that - * is, the driver is not allowed to post anything outside of this - * rectangle. - * - * The rectangle evaluated during (*post)() and specifies which area - * of the buffer passed in (*post)() shall to be posted. - * - * return -EINVAL if width or height <=0, or if left or top < 0 - */ - int (*setUpdateRect)(struct framebuffer_device_t* window, - int left, int top, int width, int height); - - /* - * Post <buffer> to the display (display it on the screen) - * The buffer must have been allocated with the - * GRALLOC_USAGE_HW_FB usage flag. - * buffer must be the same width and height as the display and must NOT - * be locked. - * - * The buffer is shown during the next VSYNC. - * - * If the same buffer is posted again (possibly after some other buffer), - * post() will block until the the first post is completed. - * - * Internally, post() is expected to lock the buffer so that a - * subsequent call to gralloc_module_t::(*lock)() with USAGE_RENDER or - * USAGE_*_WRITE will block until it is safe; that is typically once this - * buffer is shown and another buffer has been posted. - * - * Returns 0 on success or -errno on error. - */ - int (*post)(struct framebuffer_device_t* dev, buffer_handle_t buffer); - - - /* - * The (*compositionComplete)() method must be called after the - * compositor has finished issuing GL commands for client buffers. - */ - - int (*compositionComplete)(struct framebuffer_device_t* dev); - - /* - * This hook is OPTIONAL. - * - * If non NULL it will be caused by SurfaceFlinger on dumpsys - */ - void (*dump)(struct framebuffer_device_t* dev, char *buff, int buff_len); - - /* - * (*enableScreen)() is used to either blank (enable=0) or - * unblank (enable=1) the screen this framebuffer is attached to. - * - * Returns 0 on success or -errno on error. - */ - int (*enableScreen)(struct framebuffer_device_t* dev, int enable); - - void* reserved_proc[6]; - -} framebuffer_device_t; - - -/** convenience API for opening and closing a supported device */ - -static inline int framebuffer_open(const struct hw_module_t* module, - struct framebuffer_device_t** device) { - return module->methods->open(module, - GRALLOC_HARDWARE_FB0, TO_HW_DEVICE_T_OPEN(device)); -} - -static inline int framebuffer_close(struct framebuffer_device_t* device) { - return device->common.close(&device->common); -} - - -__END_DECLS - -#endif // ANDROID_FB_INTERFACE_H +../../include_all/hardware/fb.h
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