Baseline of hwcplus package taken from KitKat AOSP.

third_party/hwcplus/include/hardware/hwcomposer_defs.h

+/*
+ * 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_HEADER_VERSION          1
+
+#define HWC_MODULE_API_VERSION_0_1  HARDWARE_MODULE_API_VERSION(0, 1)
+
+#define HWC_DEVICE_API_VERSION_1_0  HARDWARE_DEVICE_API_VERSION_2(1, 0, HWC_HEADER_VERSION)
+#define HWC_DEVICE_API_VERSION_1_1  HARDWARE_DEVICE_API_VERSION_2(1, 1, HWC_HEADER_VERSION)
+#define HWC_DEVICE_API_VERSION_1_2  HARDWARE_DEVICE_API_VERSION_2(1, 2, HWC_HEADER_VERSION)
+#define HWC_DEVICE_API_VERSION_1_3  HARDWARE_DEVICE_API_VERSION_2(1, 3, HWC_HEADER_VERSION)
+
+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,
+
+    /* this layer holds the result of compositing the HWC_FRAMEBUFFER layers.
+     * Added in HWC_DEVICE_API_VERSION_1_1. */
+    HWC_FRAMEBUFFER_TARGET = 3,
+};
+
+/*
+ * 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 {
+    /*
+     * Must return 1 if the background layer is supported, 0 otherwise.
+     */
+    HWC_BACKGROUND_LAYER_SUPPORTED      = 0,
+
+    /*
+     * Returns the vsync period in nanoseconds.
+     *
+     * This query is not used for HWC_DEVICE_API_VERSION_1_1 and later.
+     * Instead, the per-display attribute HWC_DISPLAY_VSYNC_PERIOD is used.
+     */
+    HWC_VSYNC_PERIOD                    = 1,
+
+    /*
+     * Availability: HWC_DEVICE_API_VERSION_1_1
+     * Returns a mask of supported display types.
+     */
+    HWC_DISPLAY_TYPES_SUPPORTED         = 2,
+};
+
+/* display attributes returned by getDisplayAttributes() */
+enum {
+    /* Indicates the end of an attribute list */
+    HWC_DISPLAY_NO_ATTRIBUTE                = 0,
+
+    /* The vsync period in nanoseconds */
+    HWC_DISPLAY_VSYNC_PERIOD                = 1,
+
+    /* The number of pixels in the horizontal and vertical directions. */
+    HWC_DISPLAY_WIDTH                       = 2,
+    HWC_DISPLAY_HEIGHT                      = 3,
+
+    /* The number of pixels per thousand inches of this configuration.
+     *
+     * Scaling DPI by 1000 allows it to be stored in an int without losing
+     * too much precision.
+     *
+     * If the DPI for a configuration is unavailable or the HWC implementation
+     * considers it unreliable, it should set these attributes to zero.
+     */
+    HWC_DISPLAY_DPI_X                       = 4,
+    HWC_DISPLAY_DPI_Y                       = 5,
+};
+
+/* Allowed events for hwc_methods::eventControl() */
+enum {
+    HWC_EVENT_VSYNC     = 0
+};
+
+/* Display types and associated mask bits. */
+enum {
+    HWC_DISPLAY_PRIMARY     = 0,
+    HWC_DISPLAY_EXTERNAL    = 1,    // HDMI, DP, etc.
+    HWC_DISPLAY_VIRTUAL     = 2,
+
+    HWC_NUM_PHYSICAL_DISPLAY_TYPES = 2,
+    HWC_NUM_DISPLAY_TYPES          = 3,
+};
+
+enum {
+    HWC_DISPLAY_PRIMARY_BIT     = 1 << HWC_DISPLAY_PRIMARY,
+    HWC_DISPLAY_EXTERNAL_BIT    = 1 << HWC_DISPLAY_EXTERNAL,
+    HWC_DISPLAY_VIRTUAL_BIT     = 1 << HWC_DISPLAY_VIRTUAL,
+};
+
+/*****************************************************************************/
+
+__END_DECLS
+
+#endif /* ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H */