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1 /* | |
2 * Copyright (C) 2010 The Android Open Source Project | |
3 * | |
4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 * you may not use this file except in compliance with the License. | |
6 * You may obtain a copy of the License at | |
7 * | |
8 * http://www.apache.org/licenses/LICENSE-2.0 | |
9 * | |
10 * Unless required by applicable law or agreed to in writing, software | |
11 * distributed under the License is distributed on an "AS IS" BASIS, | |
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 * See the License for the specific language governing permissions and | |
14 * limitations under the License. | |
15 */ | |
16 | |
17 #ifndef ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H | |
18 #define ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H | |
19 | |
20 #include <stdint.h> | |
21 #include <sys/cdefs.h> | |
22 | |
23 #include <hardware/gralloc.h> | |
24 #include <hardware/hardware.h> | |
25 #include <cutils/native_handle.h> | |
26 | |
27 __BEGIN_DECLS | |
28 | |
29 /*****************************************************************************/ | |
30 | |
31 #define HWC_HEADER_VERSION 1 | |
32 | |
33 #define HWC_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1) | |
34 | |
35 #define HWC_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION_2(1, 0, HWC_HEAD
ER_VERSION) | |
36 #define HWC_DEVICE_API_VERSION_1_1 HARDWARE_DEVICE_API_VERSION_2(1, 1, HWC_HEAD
ER_VERSION) | |
37 #define HWC_DEVICE_API_VERSION_1_2 HARDWARE_DEVICE_API_VERSION_2(1, 2, HWC_HEAD
ER_VERSION) | |
38 #define HWC_DEVICE_API_VERSION_1_3 HARDWARE_DEVICE_API_VERSION_2(1, 3, HWC_HEAD
ER_VERSION) | |
39 | |
40 enum { | |
41 /* hwc_composer_device_t::set failed in EGL */ | |
42 HWC_EGL_ERROR = -1 | |
43 }; | |
44 | |
45 /* | |
46 * hwc_layer_t::hints values | |
47 * Hints are set by the HAL and read by SurfaceFlinger | |
48 */ | |
49 enum { | |
50 /* | |
51 * HWC can set the HWC_HINT_TRIPLE_BUFFER hint to indicate to SurfaceFlinger | |
52 * that it should triple buffer this layer. Typically HWC does this when | |
53 * the layer will be unavailable for use for an extended period of time, | |
54 * e.g. if the display will be fetching data directly from the layer and | |
55 * the layer can not be modified until after the next set(). | |
56 */ | |
57 HWC_HINT_TRIPLE_BUFFER = 0x00000001, | |
58 | |
59 /* | |
60 * HWC sets HWC_HINT_CLEAR_FB to tell SurfaceFlinger that it should clear th
e | |
61 * framebuffer with transparent pixels where this layer would be. | |
62 * SurfaceFlinger will only honor this flag when the layer has no blending | |
63 * | |
64 */ | |
65 HWC_HINT_CLEAR_FB = 0x00000002 | |
66 }; | |
67 | |
68 /* | |
69 * hwc_layer_t::flags values | |
70 * Flags are set by SurfaceFlinger and read by the HAL | |
71 */ | |
72 enum { | |
73 /* | |
74 * HWC_SKIP_LAYER is set by SurfaceFlnger to indicate that the HAL | |
75 * shall not consider this layer for composition as it will be handled | |
76 * by SurfaceFlinger (just as if compositionType was set to HWC_OVERLAY). | |
77 */ | |
78 HWC_SKIP_LAYER = 0x00000001, | |
79 }; | |
80 | |
81 /* | |
82 * hwc_layer_t::compositionType values | |
83 */ | |
84 enum { | |
85 /* this layer is to be drawn into the framebuffer by SurfaceFlinger */ | |
86 HWC_FRAMEBUFFER = 0, | |
87 | |
88 /* this layer will be handled in the HWC */ | |
89 HWC_OVERLAY = 1, | |
90 | |
91 /* this is the background layer. it's used to set the background color. | |
92 * there is only a single background layer */ | |
93 HWC_BACKGROUND = 2, | |
94 | |
95 /* this layer holds the result of compositing the HWC_FRAMEBUFFER layers. | |
96 * Added in HWC_DEVICE_API_VERSION_1_1. */ | |
97 HWC_FRAMEBUFFER_TARGET = 3, | |
98 }; | |
99 | |
100 /* | |
101 * hwc_layer_t::blending values | |
102 */ | |
103 enum { | |
104 /* no blending */ | |
105 HWC_BLENDING_NONE = 0x0100, | |
106 | |
107 /* ONE / ONE_MINUS_SRC_ALPHA */ | |
108 HWC_BLENDING_PREMULT = 0x0105, | |
109 | |
110 /* SRC_ALPHA / ONE_MINUS_SRC_ALPHA */ | |
111 HWC_BLENDING_COVERAGE = 0x0405 | |
112 }; | |
113 | |
114 /* | |
115 * hwc_layer_t::transform values | |
116 */ | |
117 enum { | |
118 /* flip source image horizontally */ | |
119 HWC_TRANSFORM_FLIP_H = HAL_TRANSFORM_FLIP_H, | |
120 /* flip source image vertically */ | |
121 HWC_TRANSFORM_FLIP_V = HAL_TRANSFORM_FLIP_V, | |
122 /* rotate source image 90 degrees clock-wise */ | |
123 HWC_TRANSFORM_ROT_90 = HAL_TRANSFORM_ROT_90, | |
124 /* rotate source image 180 degrees */ | |
125 HWC_TRANSFORM_ROT_180 = HAL_TRANSFORM_ROT_180, | |
126 /* rotate source image 270 degrees clock-wise */ | |
127 HWC_TRANSFORM_ROT_270 = HAL_TRANSFORM_ROT_270, | |
128 }; | |
129 | |
130 /* attributes queriable with query() */ | |
131 enum { | |
132 /* | |
133 * Must return 1 if the background layer is supported, 0 otherwise. | |
134 */ | |
135 HWC_BACKGROUND_LAYER_SUPPORTED = 0, | |
136 | |
137 /* | |
138 * Returns the vsync period in nanoseconds. | |
139 * | |
140 * This query is not used for HWC_DEVICE_API_VERSION_1_1 and later. | |
141 * Instead, the per-display attribute HWC_DISPLAY_VSYNC_PERIOD is used. | |
142 */ | |
143 HWC_VSYNC_PERIOD = 1, | |
144 | |
145 /* | |
146 * Availability: HWC_DEVICE_API_VERSION_1_1 | |
147 * Returns a mask of supported display types. | |
148 */ | |
149 HWC_DISPLAY_TYPES_SUPPORTED = 2, | |
150 }; | |
151 | |
152 /* display attributes returned by getDisplayAttributes() */ | |
153 enum { | |
154 /* Indicates the end of an attribute list */ | |
155 HWC_DISPLAY_NO_ATTRIBUTE = 0, | |
156 | |
157 /* The vsync period in nanoseconds */ | |
158 HWC_DISPLAY_VSYNC_PERIOD = 1, | |
159 | |
160 /* The number of pixels in the horizontal and vertical directions. */ | |
161 HWC_DISPLAY_WIDTH = 2, | |
162 HWC_DISPLAY_HEIGHT = 3, | |
163 | |
164 /* The number of pixels per thousand inches of this configuration. | |
165 * | |
166 * Scaling DPI by 1000 allows it to be stored in an int without losing | |
167 * too much precision. | |
168 * | |
169 * If the DPI for a configuration is unavailable or the HWC implementation | |
170 * considers it unreliable, it should set these attributes to zero. | |
171 */ | |
172 HWC_DISPLAY_DPI_X = 4, | |
173 HWC_DISPLAY_DPI_Y = 5, | |
174 }; | |
175 | |
176 /* Allowed events for hwc_methods::eventControl() */ | |
177 enum { | |
178 HWC_EVENT_VSYNC = 0 | |
179 }; | |
180 | |
181 /* Display types and associated mask bits. */ | |
182 enum { | |
183 HWC_DISPLAY_PRIMARY = 0, | |
184 HWC_DISPLAY_EXTERNAL = 1, // HDMI, DP, etc. | |
185 HWC_DISPLAY_VIRTUAL = 2, | |
186 | |
187 HWC_NUM_PHYSICAL_DISPLAY_TYPES = 2, | |
188 HWC_NUM_DISPLAY_TYPES = 3, | |
189 }; | |
190 | |
191 enum { | |
192 HWC_DISPLAY_PRIMARY_BIT = 1 << HWC_DISPLAY_PRIMARY, | |
193 HWC_DISPLAY_EXTERNAL_BIT = 1 << HWC_DISPLAY_EXTERNAL, | |
194 HWC_DISPLAY_VIRTUAL_BIT = 1 << HWC_DISPLAY_VIRTUAL, | |
195 }; | |
196 | |
197 /*****************************************************************************/ | |
198 | |
199 __END_DECLS | |
200 | |
201 #endif /* ANDROID_INCLUDE_HARDWARE_HWCOMPOSER_DEFS_H */ | |
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