Cody Schuffelen | 134ff03 | 2019-11-22 00:25:32 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | #include <sys/mman.h> |
| 17 | |
| 18 | #include <dlfcn.h> |
| 19 | |
| 20 | #include <cutils/ashmem.h> |
| 21 | #include <log/log.h> |
| 22 | #include <cutils/properties.h> |
| 23 | |
| 24 | #include <sys/system_properties.h> |
| 25 | |
| 26 | #include <hardware/hardware.h> |
| 27 | #include <hardware/gralloc.h> |
| 28 | |
| 29 | #include <fcntl.h> |
| 30 | #include <errno.h> |
| 31 | #include <sys/ioctl.h> |
| 32 | #include <string.h> |
| 33 | #include <stdlib.h> |
| 34 | |
| 35 | #include <cutils/atomic.h> |
| 36 | |
| 37 | #if defined(__ANDROID__) |
| 38 | #include <linux/fb.h> |
| 39 | #endif |
| 40 | |
| 41 | #include "gralloc_vsoc_priv.h" |
| 42 | #include "region_registry.h" |
| 43 | |
| 44 | #include "common/libs/auto_resources/auto_resources.h" |
| 45 | #include "common/libs/threads/cuttlefish_thread.h" |
| 46 | #include "common/vsoc/lib/screen_region_view.h" |
| 47 | |
| 48 | using vsoc::screen::ScreenRegionView; |
| 49 | |
| 50 | /*****************************************************************************/ |
| 51 | |
| 52 | struct fb_context_t { |
| 53 | framebuffer_device_t device; |
| 54 | }; |
| 55 | |
| 56 | /*****************************************************************************/ |
| 57 | |
| 58 | static int fb_setSwapInterval(struct framebuffer_device_t* dev, int interval) { |
| 59 | if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) { |
| 60 | return -EINVAL; |
| 61 | } |
| 62 | // FIXME: implement fb_setSwapInterval |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * These functions (and probably the entire framebuffer device) are most likely |
| 68 | * not used when the hardware composer device is present, however is hard to be |
| 69 | * 100% sure. |
| 70 | */ |
| 71 | static int fb_setUpdateRect( |
| 72 | struct framebuffer_device_t* dev __unused, int l, int t, int w, int h) { |
| 73 | if (((w|h) <= 0) || ((l|t)<0)) { |
| 74 | return -EINVAL; |
| 75 | } |
| 76 | // TODO(jemoreira): Find a way to broadcast this with the framebuffer control. |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | static int fb_post(struct framebuffer_device_t* dev __unused, |
| 81 | buffer_handle_t buffer_handle) { |
| 82 | static int frame_buffer_idx = 0; |
| 83 | |
| 84 | auto screen_view = ScreenRegionView::GetInstance(); |
| 85 | |
| 86 | void* frame_buffer = screen_view->GetBuffer(frame_buffer_idx); |
| 87 | const private_handle_t* p_handle = |
| 88 | reinterpret_cast<const private_handle_t*>(buffer_handle); |
| 89 | void* buffer; |
| 90 | int retval = |
| 91 | reinterpret_cast<gralloc_module_t*>(dev->common.module) |
| 92 | ->lock(reinterpret_cast<const gralloc_module_t*>(dev->common.module), |
| 93 | buffer_handle, GRALLOC_USAGE_SW_READ_OFTEN, 0, 0, |
| 94 | p_handle->x_res, p_handle->y_res, &buffer); |
| 95 | if (retval != 0) { |
| 96 | ALOGE("Got error code %d from lock function", retval); |
| 97 | return -1; |
| 98 | } |
| 99 | memcpy(frame_buffer, buffer, screen_view->buffer_size()); |
| 100 | screen_view->BroadcastNewFrame(frame_buffer_idx); |
| 101 | |
| 102 | frame_buffer_idx = (frame_buffer_idx + 1) % screen_view->number_of_buffers(); |
| 103 | |
| 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | /*****************************************************************************/ |
| 108 | |
| 109 | static int fb_close(struct hw_device_t *dev) { |
| 110 | fb_context_t* ctx = (fb_context_t*)dev; |
| 111 | if (ctx) { |
| 112 | free(ctx); |
| 113 | } |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | int fb_device_open( |
| 118 | hw_module_t const* module, const char* name, hw_device_t** device) { |
| 119 | if (strcmp(name, GRALLOC_HARDWARE_FB0) != 0) { |
| 120 | return -EINVAL; |
| 121 | } |
| 122 | /* initialize our state here */ |
| 123 | fb_context_t* dev = (fb_context_t*) malloc(sizeof(*dev)); |
| 124 | LOG_FATAL_IF(!dev, "%s: malloc returned NULL.", __FUNCTION__); |
| 125 | memset(dev, 0, sizeof(*dev)); |
| 126 | |
| 127 | /* initialize the procs */ |
| 128 | dev->device.common.tag = HARDWARE_DEVICE_TAG; |
| 129 | dev->device.common.version = 0; |
| 130 | dev->device.common.module = const_cast<hw_module_t*>(module); |
| 131 | dev->device.common.close = fb_close; |
| 132 | dev->device.setSwapInterval = fb_setSwapInterval; |
| 133 | dev->device.post = fb_post; |
| 134 | dev->device.setUpdateRect = fb_setUpdateRect; |
| 135 | |
| 136 | auto screen_view = ScreenRegionView::GetInstance(); |
| 137 | |
| 138 | int stride = |
| 139 | screen_view->line_length() / screen_view->bytes_per_pixel(); |
| 140 | int format = HAL_PIXEL_FORMAT_RGBX_8888; |
| 141 | const_cast<uint32_t&>(dev->device.flags) = 0; |
| 142 | const_cast<uint32_t&>(dev->device.width) = screen_view->x_res(); |
| 143 | const_cast<uint32_t&>(dev->device.height) = screen_view->y_res(); |
| 144 | const_cast<int&>(dev->device.stride) = stride; |
| 145 | const_cast<int&>(dev->device.format) = format; |
| 146 | const_cast<float&>(dev->device.xdpi) = screen_view->dpi(); |
| 147 | const_cast<float&>(dev->device.ydpi) = screen_view->dpi(); |
| 148 | const_cast<float&>(dev->device.fps) = |
| 149 | (screen_view->refresh_rate_hz() * 1000) / 1000.0f; |
| 150 | const_cast<int&>(dev->device.minSwapInterval) = 1; |
| 151 | const_cast<int&>(dev->device.maxSwapInterval) = 1; |
| 152 | *device = &dev->device.common; |
| 153 | |
| 154 | return 0; |
| 155 | } |