| Mathias Agopian | 5d3de30 | 2010-08-05 15:24:35 -0700 | [diff] [blame^] | 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 | #include <hardware/hardware.h> |
| 18 | #include <hardware/overlay.h> |
| 19 | |
| 20 | #include <fcntl.h> |
| 21 | #include <errno.h> |
| 22 | |
| 23 | #include <cutils/log.h> |
| 24 | #include <cutils/atomic.h> |
| 25 | |
| 26 | #include <hardware/hwcomposer.h> |
| 27 | |
| 28 | #include <EGL/egl.h> |
| 29 | |
| 30 | /*****************************************************************************/ |
| 31 | |
| 32 | struct hwc_context_t { |
| 33 | hwc_composer_device_t device; |
| 34 | /* our private state goes below here */ |
| 35 | }; |
| 36 | |
| 37 | static int hwc_device_open(const struct hw_module_t* module, const char* name, |
| 38 | struct hw_device_t** device); |
| 39 | |
| 40 | static struct hw_module_methods_t hwc_module_methods = { |
| 41 | open: hwc_device_open |
| 42 | }; |
| 43 | |
| 44 | hwc_module_t HAL_MODULE_INFO_SYM = { |
| 45 | common: { |
| 46 | tag: HARDWARE_MODULE_TAG, |
| 47 | version_major: 1, |
| 48 | version_minor: 0, |
| 49 | id: HWC_HARDWARE_MODULE_ID, |
| 50 | name: "Sample hwcomposer module", |
| 51 | author: "The Android Open Source Project", |
| 52 | methods: &hwc_module_methods, |
| 53 | } |
| 54 | }; |
| 55 | |
| 56 | /*****************************************************************************/ |
| 57 | |
| 58 | static int hwc_prepare(hwc_composer_device_t *dev, hwc_layer_list_t* list) { |
| 59 | if (list && (list->flags & HWC_GEOMETRY_CHANGED)) { |
| 60 | for (size_t i=0 ; i<list->numHwLayers ; i++) { |
| 61 | list->hwLayers[i].compositionType = HWC_FRAMEBUFFER; |
| 62 | } |
| 63 | } |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static int hwc_set(hwc_composer_device_t *dev, |
| 68 | hwc_display_t dpy, |
| 69 | hwc_surface_t sur, |
| 70 | hwc_layer_list_t* list) |
| 71 | { |
| 72 | EGLBoolean sucess = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur); |
| 73 | if (!sucess) { |
| 74 | return HWC_EGL_ERROR; |
| 75 | } |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static int hwc_device_close(struct hw_device_t *dev) |
| 80 | { |
| 81 | struct hwc_context_t* ctx = (struct hwc_context_t*)dev; |
| 82 | if (ctx) { |
| 83 | free(ctx); |
| 84 | } |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | /*****************************************************************************/ |
| 89 | |
| 90 | static int hwc_device_open(const struct hw_module_t* module, const char* name, |
| 91 | struct hw_device_t** device) |
| 92 | { |
| 93 | int status = -EINVAL; |
| 94 | if (!strcmp(name, HWC_HARDWARE_COMPOSER)) { |
| 95 | struct hwc_context_t *dev; |
| 96 | dev = (hwc_context_t*)malloc(sizeof(*dev)); |
| 97 | |
| 98 | /* initialize our state here */ |
| 99 | memset(dev, 0, sizeof(*dev)); |
| 100 | |
| 101 | /* initialize the procs */ |
| 102 | dev->device.common.tag = HARDWARE_DEVICE_TAG; |
| 103 | dev->device.common.version = 0; |
| 104 | dev->device.common.module = const_cast<hw_module_t*>(module); |
| 105 | dev->device.common.close = hwc_device_close; |
| 106 | |
| 107 | dev->device.prepare = hwc_prepare; |
| 108 | dev->device.set = hwc_set; |
| 109 | |
| 110 | *device = &dev->device.common; |
| 111 | status = 0; |
| 112 | } |
| 113 | return status; |
| 114 | } |