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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_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H
#define ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H
#include <stdint.h>
#include <sys/cdefs.h>
#include <hardware/gralloc.h>
#include <hardware/hardware.h>
#include <cutils/native_handle.h>
__BEGIN_DECLS
/*****************************************************************************/
#define HWC_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
#define HWC_DEVICE_API_VERSION_0_1 HARDWARE_DEVICE_API_VERSION(0, 1)
#define HWC_DEVICE_API_VERSION_0_2 HARDWARE_DEVICE_API_VERSION(0, 2)
#define HWC_DEVICE_API_VERSION_0_3 HARDWARE_DEVICE_API_VERSION(0, 3)
enum {
/* hwc_composer_device_t::set failed in EGL */
HWC_EGL_ERROR = -1
};
/*
* hwc_layer_t::hints values
* Hints are set by the HAL and read by SurfaceFlinger
*/
enum {
/*
* HWC can set the HWC_HINT_TRIPLE_BUFFER hint to indicate to SurfaceFlinger
* that it should triple buffer this layer. Typically HWC does this when
* the layer will be unavailable for use for an extended period of time,
* e.g. if the display will be fetching data directly from the layer and
* the layer can not be modified until after the next set().
*/
HWC_HINT_TRIPLE_BUFFER = 0x00000001,
/*
* HWC sets HWC_HINT_CLEAR_FB to tell SurfaceFlinger that it should clear the
* framebuffer with transparent pixels where this layer would be.
* SurfaceFlinger will only honor this flag when the layer has no blending
*
*/
HWC_HINT_CLEAR_FB = 0x00000002
};
/*
* hwc_layer_t::flags values
* Flags are set by SurfaceFlinger and read by the HAL
*/
enum {
/*
* HWC_SKIP_LAYER is set by SurfaceFlnger to indicate that the HAL
* shall not consider this layer for composition as it will be handled
* by SurfaceFlinger (just as if compositionType was set to HWC_OVERLAY).
*/
HWC_SKIP_LAYER = 0x00000001,
};
/*
* hwc_layer_t::compositionType values
*/
enum {
/* this layer is to be drawn into the framebuffer by SurfaceFlinger */
HWC_FRAMEBUFFER = 0,
/* this layer will be handled in the HWC */
HWC_OVERLAY = 1,
/* this is the background layer. it's used to set the background color.
* there is only a single background layer */
HWC_BACKGROUND = 2,
};
/*
* hwc_layer_t::blending values
*/
enum {
/* no blending */
HWC_BLENDING_NONE = 0x0100,
/* ONE / ONE_MINUS_SRC_ALPHA */
HWC_BLENDING_PREMULT = 0x0105,
/* SRC_ALPHA / ONE_MINUS_SRC_ALPHA */
HWC_BLENDING_COVERAGE = 0x0405
};
/*
* hwc_layer_t::transform values
*/
enum {
/* flip source image horizontally */
HWC_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H,
/* flip source image vertically */
HWC_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V,
/* rotate source image 90 degrees clock-wise */
HWC_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90,
/* rotate source image 180 degrees */
HWC_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180,
/* rotate source image 270 degrees clock-wise */
HWC_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270,
};
/* attributes queriable with query() */
enum {
/*
* availability: HWC_DEVICE_API_VERSION_0_2
* must return 1 if the background layer is supported, 0 otherwise
*/
HWC_BACKGROUND_LAYER_SUPPORTED = 0,
/*
* availability: HWC_DEVICE_API_VERSION_0_3
* returns the vsync period in nanosecond
*/
HWC_VSYNC_PERIOD = 1,
};
/* Allowed events for hwc_methods::eventControl() */
enum {
HWC_EVENT_VSYNC = 0,
HWC_EVENT_ORIENTATION // To notify HWC about the device orientation
};
/*****************************************************************************/
__END_DECLS
#endif /* ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H */
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