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| 1 /* | |
| 2 * Copyright (C) 2008 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 | |
| 18 #ifndef ANDROID_FB_INTERFACE_H | |
| 19 #define ANDROID_FB_INTERFACE_H | |
| 20 | |
| 21 #include <stdint.h> | |
| 22 #include <sys/cdefs.h> | |
| 23 #include <sys/types.h> | |
| 24 | |
| 25 #include <cutils/native_handle.h> | |
| 26 | |
| 27 #include <hardware/hardware.h> | |
| 28 | |
| 29 __BEGIN_DECLS | |
| 30 | |
| 31 #define GRALLOC_HARDWARE_FB0 "fb0" | |
| 32 | |
| 33 /*****************************************************************************/ | |
| 34 | |
| 35 | |
| 36 /*****************************************************************************/ | |
| 37 | |
| 38 typedef struct framebuffer_device_t { | |
| 39 struct hw_device_t common; | |
| 40 | |
| 41 /* flags describing some attributes of the framebuffer */ | |
| 42 const uint32_t flags; | |
| 43 | |
| 44 /* dimensions of the framebuffer in pixels */ | |
| 45 const uint32_t width; | |
| 46 const uint32_t height; | |
| 47 | |
| 48 /* frambuffer stride in pixels */ | |
| 49 const int stride; | |
| 50 | |
| 51 /* framebuffer pixel format */ | |
| 52 const int format; | |
| 53 | |
| 54 /* resolution of the framebuffer's display panel in pixel per inch*/ | |
| 55 const float xdpi; | |
| 56 const float ydpi; | |
| 57 | |
| 58 /* framebuffer's display panel refresh rate in frames per second */ | |
| 59 const float fps; | |
| 60 | |
| 61 /* min swap interval supported by this framebuffer */ | |
| 62 const int minSwapInterval; | |
| 63 | |
| 64 /* max swap interval supported by this framebuffer */ | |
| 65 const int maxSwapInterval; | |
| 66 | |
| 67 /* Number of framebuffers supported*/ | |
| 68 const int numFramebuffers; | |
| 69 | |
| 70 int reserved[7]; | |
| 71 | |
| 72 /* | |
| 73 * requests a specific swap-interval (same definition than EGL) | |
| 74 * | |
| 75 * Returns 0 on success or -errno on error. | |
| 76 */ | |
| 77 int (*setSwapInterval)(struct framebuffer_device_t* window, | |
| 78 int interval); | |
| 79 | |
| 80 /* | |
| 81 * This hook is OPTIONAL. | |
| 82 * | |
| 83 * It is non NULL If the framebuffer driver supports "update-on-demand" | |
| 84 * and the given rectangle is the area of the screen that gets | |
| 85 * updated during (*post)(). | |
| 86 * | |
| 87 * This is useful on devices that are able to DMA only a portion of | |
| 88 * the screen to the display panel, upon demand -- as opposed to | |
| 89 * constantly refreshing the panel 60 times per second, for instance. | |
| 90 * | |
| 91 * Only the area defined by this rectangle is guaranteed to be valid, that | |
| 92 * is, the driver is not allowed to post anything outside of this | |
| 93 * rectangle. | |
| 94 * | |
| 95 * The rectangle evaluated during (*post)() and specifies which area | |
| 96 * of the buffer passed in (*post)() shall to be posted. | |
| 97 * | |
| 98 * return -EINVAL if width or height <=0, or if left or top < 0 | |
| 99 */ | |
| 100 int (*setUpdateRect)(struct framebuffer_device_t* window, | |
| 101 int left, int top, int width, int height); | |
| 102 | |
| 103 /* | |
| 104 * Post <buffer> to the display (display it on the screen) | |
| 105 * The buffer must have been allocated with the | |
| 106 * GRALLOC_USAGE_HW_FB usage flag. | |
| 107 * buffer must be the same width and height as the display and must NOT | |
| 108 * be locked. | |
| 109 * | |
| 110 * The buffer is shown during the next VSYNC. | |
| 111 * | |
| 112 * If the same buffer is posted again (possibly after some other buffer), | |
| 113 * post() will block until the the first post is completed. | |
| 114 * | |
| 115 * Internally, post() is expected to lock the buffer so that a | |
| 116 * subsequent call to gralloc_module_t::(*lock)() with USAGE_RENDER or | |
| 117 * USAGE_*_WRITE will block until it is safe; that is typically once this | |
| 118 * buffer is shown and another buffer has been posted. | |
| 119 * | |
| 120 * Returns 0 on success or -errno on error. | |
| 121 */ | |
| 122 int (*post)(struct framebuffer_device_t* dev, buffer_handle_t buffer); | |
| 123 | |
| 124 | |
| 125 /* | |
| 126 * The (*compositionComplete)() method must be called after the | |
| 127 * compositor has finished issuing GL commands for client buffers. | |
| 128 */ | |
| 129 | |
| 130 int (*compositionComplete)(struct framebuffer_device_t* dev); | |
| 131 | |
| 132 /* | |
| 133 * This hook is OPTIONAL. | |
| 134 * | |
| 135 * If non NULL it will be caused by SurfaceFlinger on dumpsys | |
| 136 */ | |
| 137 void (*dump)(struct framebuffer_device_t* dev, char *buff, int buff_len); | |
| 138 | |
| 139 /* | |
| 140 * (*enableScreen)() is used to either blank (enable=0) or | |
| 141 * unblank (enable=1) the screen this framebuffer is attached to. | |
| 142 * | |
| 143 * Returns 0 on success or -errno on error. | |
| 144 */ | |
| 145 int (*enableScreen)(struct framebuffer_device_t* dev, int enable); | |
| 146 | |
| 147 void* reserved_proc[6]; | |
| 148 | |
| 149 } framebuffer_device_t; | |
| 150 | |
| 151 | |
| 152 /** convenience API for opening and closing a supported device */ | |
| 153 | |
| 154 static inline int framebuffer_open(const struct hw_module_t* module, | |
| 155 struct framebuffer_device_t** device) { | |
| 156 return module->methods->open(module, | |
| 157 GRALLOC_HARDWARE_FB0, (struct hw_device_t**)device); | |
| 158 } | |
| 159 | |
| 160 static inline int framebuffer_close(struct framebuffer_device_t* device) { | |
| 161 return device->common.close(&device->common); | |
| 162 } | |
| 163 | |
| 164 | |
| 165 __END_DECLS | |
| 166 | |
| 167 #endif // ANDROID_FB_INTERFACE_H | |
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Chromium Code Reviews
Issue 2643643008:
Delete third_party/hwcplus/ (Closed)
