247 lines
8.3 KiB
C
247 lines
8.3 KiB
C
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H
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#define ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <hardware/gralloc.h>
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#include <hardware/hardware.h>
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#include <cutils/native_handle.h>
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__BEGIN_DECLS
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/*****************************************************************************/
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#define HWC_HEADER_VERSION 1
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#define HWC_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
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#define HWC_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION_2(1, 0, HWC_HEADER_VERSION)
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#define HWC_DEVICE_API_VERSION_1_1 HARDWARE_DEVICE_API_VERSION_2(1, 1, HWC_HEADER_VERSION)
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#define HWC_DEVICE_API_VERSION_1_2 HARDWARE_DEVICE_API_VERSION_2(1, 2, HWC_HEADER_VERSION)
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#define HWC_DEVICE_API_VERSION_1_3 HARDWARE_DEVICE_API_VERSION_2(1, 3, HWC_HEADER_VERSION)
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#define HWC_DEVICE_API_VERSION_1_4 HARDWARE_DEVICE_API_VERSION_2(1, 4, HWC_HEADER_VERSION)
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enum {
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/* hwc_composer_device_t::set failed in EGL */
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HWC_EGL_ERROR = -1
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};
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/*
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* hwc_layer_t::hints values
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* Hints are set by the HAL and read by SurfaceFlinger
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*/
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enum {
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/*
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* HWC can set the HWC_HINT_TRIPLE_BUFFER hint to indicate to SurfaceFlinger
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* that it should triple buffer this layer. Typically HWC does this when
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* the layer will be unavailable for use for an extended period of time,
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* e.g. if the display will be fetching data directly from the layer and
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* the layer can not be modified until after the next set().
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*/
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HWC_HINT_TRIPLE_BUFFER = 0x00000001,
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/*
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* HWC sets HWC_HINT_CLEAR_FB to tell SurfaceFlinger that it should clear the
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* framebuffer with transparent pixels where this layer would be.
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* SurfaceFlinger will only honor this flag when the layer has no blending
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*
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*/
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HWC_HINT_CLEAR_FB = 0x00000002
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};
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/*
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* hwc_layer_t::flags values
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* Flags are set by SurfaceFlinger and read by the HAL
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*/
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enum {
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/*
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* HWC_SKIP_LAYER is set by SurfaceFlnger to indicate that the HAL
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* shall not consider this layer for composition as it will be handled
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* by SurfaceFlinger (just as if compositionType was set to HWC_OVERLAY).
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*/
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HWC_SKIP_LAYER = 0x00000001,
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/*
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* HWC_IS_CURSOR_LAYER is set by surfaceflinger to indicate that this
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* layer is being used as a cursor on this particular display, and that
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* surfaceflinger can potentially perform asynchronous position updates for
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* this layer. If a call to prepare() returns HWC_CURSOR_OVERLAY for the
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* composition type of this layer, then the hwcomposer will allow async
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* position updates to this layer via setCursorPositionAsync().
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*/
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HWC_IS_CURSOR_LAYER = 0x00000002
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};
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/*
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* hwc_layer_t::compositionType values
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*/
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enum {
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/* this layer is to be drawn into the framebuffer by SurfaceFlinger */
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HWC_FRAMEBUFFER = 0,
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/* this layer will be handled in the HWC */
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HWC_OVERLAY = 1,
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/* this is the background layer. it's used to set the background color.
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* there is only a single background layer */
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HWC_BACKGROUND = 2,
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/* this layer holds the result of compositing the HWC_FRAMEBUFFER layers.
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* Added in HWC_DEVICE_API_VERSION_1_1. */
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HWC_FRAMEBUFFER_TARGET = 3,
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/* this layer's contents are taken from a sideband buffer stream.
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* Added in HWC_DEVICE_API_VERSION_1_4. */
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HWC_SIDEBAND = 4,
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/* this layer's composition will be handled by hwcomposer by dedicated
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cursor overlay hardware. hwcomposer will also all async position updates
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of this layer outside of the normal prepare()/set() loop. Added in
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HWC_DEVICE_API_VERSION_1_4. */
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HWC_CURSOR_OVERLAY = 5
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};
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/*
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* hwc_layer_t::blending values
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*/
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enum {
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/* no blending */
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HWC_BLENDING_NONE = 0x0100,
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/* ONE / ONE_MINUS_SRC_ALPHA */
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HWC_BLENDING_PREMULT = 0x0105,
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/* SRC_ALPHA / ONE_MINUS_SRC_ALPHA */
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HWC_BLENDING_COVERAGE = 0x0405
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};
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/*
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* hwc_layer_t::transform values
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*/
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enum {
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/* flip source image horizontally */
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HWC_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H,
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/* flip source image vertically */
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HWC_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V,
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/* rotate source image 90 degrees clock-wise */
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HWC_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90,
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/* rotate source image 180 degrees */
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HWC_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180,
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/* rotate source image 270 degrees clock-wise */
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HWC_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270,
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};
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/* attributes queriable with query() */
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enum {
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/*
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* Must return 1 if the background layer is supported, 0 otherwise.
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*/
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HWC_BACKGROUND_LAYER_SUPPORTED = 0,
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/*
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* Returns the vsync period in nanoseconds.
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*
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* This query is not used for HWC_DEVICE_API_VERSION_1_1 and later.
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* Instead, the per-display attribute HWC_DISPLAY_VSYNC_PERIOD is used.
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*/
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HWC_VSYNC_PERIOD = 1,
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/*
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* Availability: HWC_DEVICE_API_VERSION_1_1
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* Returns a mask of supported display types.
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*/
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HWC_DISPLAY_TYPES_SUPPORTED = 2,
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};
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/* display attributes returned by getDisplayAttributes() */
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enum {
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/* Indicates the end of an attribute list */
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HWC_DISPLAY_NO_ATTRIBUTE = 0,
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/* The vsync period in nanoseconds */
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HWC_DISPLAY_VSYNC_PERIOD = 1,
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/* The number of pixels in the horizontal and vertical directions. */
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HWC_DISPLAY_WIDTH = 2,
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HWC_DISPLAY_HEIGHT = 3,
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/* The number of pixels per thousand inches of this configuration.
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*
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* Scaling DPI by 1000 allows it to be stored in an int without losing
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* too much precision.
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*
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* If the DPI for a configuration is unavailable or the HWC implementation
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* considers it unreliable, it should set these attributes to zero.
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*/
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HWC_DISPLAY_DPI_X = 4,
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HWC_DISPLAY_DPI_Y = 5,
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};
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/* Allowed events for hwc_methods::eventControl() */
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enum {
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HWC_EVENT_VSYNC = 0
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};
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/* Display types and associated mask bits. */
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enum {
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HWC_DISPLAY_PRIMARY = 0,
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HWC_DISPLAY_EXTERNAL = 1, // HDMI, DP, etc.
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HWC_DISPLAY_VIRTUAL = 2,
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HWC_NUM_PHYSICAL_DISPLAY_TYPES = 2,
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HWC_NUM_DISPLAY_TYPES = 3,
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};
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enum {
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HWC_DISPLAY_PRIMARY_BIT = 1 << HWC_DISPLAY_PRIMARY,
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HWC_DISPLAY_EXTERNAL_BIT = 1 << HWC_DISPLAY_EXTERNAL,
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HWC_DISPLAY_VIRTUAL_BIT = 1 << HWC_DISPLAY_VIRTUAL,
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};
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/* Display power modes */
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enum {
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/* The display is turned off (blanked). */
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HWC_POWER_MODE_OFF = 0,
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/* The display is turned on and configured in a low power state
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* that is suitable for presenting ambient information to the user,
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* possibly with lower fidelity than normal but greater efficiency. */
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HWC_POWER_MODE_DOZE = 1,
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/* The display is turned on normally. */
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HWC_POWER_MODE_NORMAL = 2,
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/* The display is configured as in HWC_POWER_MODE_DOZE but may
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* stop applying frame buffer updates from the graphics subsystem.
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* This power mode is effectively a hint from the doze dream to
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* tell the hardware that it is done drawing to the display for the
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* time being and that the display should remain on in a low power
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* state and continue showing its current contents indefinitely
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* until the mode changes.
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*
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* This mode may also be used as a signal to enable hardware-based doze
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* functionality. In this case, the doze dream is effectively
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* indicating that the hardware is free to take over the display
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* and manage it autonomously to implement low power always-on display
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* functionality. */
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HWC_POWER_MODE_DOZE_SUSPEND = 3,
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};
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/*****************************************************************************/
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__END_DECLS
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#endif /* ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H */
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