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author | Mathias Agopian <mathias@google.com> | 2012-05-13 22:49:06 -0700 |
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committer | Mathias Agopian <mathias@google.com> | 2012-05-13 22:49:06 -0700 |
commit | e291f71e0a25ac9bb39fb754c599b710ab8f59d5 (patch) | |
tree | 8a4a94e0d060954bb723af4a630b175cf66dc25a /include/hardware/hwcomposer_defs.h | |
parent | a3e364144cc258bbe94e7eb0a216e317a9e7e38d (diff) | |
download | hardware_libhardware-e291f71e0a25ac9bb39fb754c599b710ab8f59d5.zip hardware_libhardware-e291f71e0a25ac9bb39fb754c599b710ab8f59d5.tar.gz hardware_libhardware-e291f71e0a25ac9bb39fb754c599b710ab8f59d5.tar.bz2 |
split hwcomposer.h
hwcomposer_defs.h now contains enums, which are essentially names.
This won't change when we rev the h/w composer API (new ones will be added instead).
we do this to avoid having to abstract all these constants in higher
level APIs; instead hwcomposer_defs.h can be included without exposing
the hwcomposer's data structures (which are a lot more fragile wrt.
backward compatibility)
Change-Id: Ifb514f64de02a599fdd2d31c188327209ccb0ffc
Diffstat (limited to 'include/hardware/hwcomposer_defs.h')
-rw-r--r-- | include/hardware/hwcomposer_defs.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/include/hardware/hwcomposer_defs.h b/include/hardware/hwcomposer_defs.h new file mode 100644 index 0000000..99465d3 --- /dev/null +++ b/include/hardware/hwcomposer_defs.h @@ -0,0 +1,148 @@ +/* + * 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 +}; + +/*****************************************************************************/ + +__END_DECLS + +#endif /* ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H */ |