helpers.c

   1 /*
   2  * Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include <assert.h>
   8 #include <stdbool.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <xf86drm.h>
  13
  14 #include "gbm_priv.h"
  15 #include "helpers.h"
  16 #include "util.h"
  17
  18 size_t gbm_num_planes_from_format(uint32_t format)
  19 {
  20         switch(format)
  21         {
  22                 case GBM_FORMAT_C8:
  23                 case GBM_FORMAT_R8:
  24                 case GBM_FORMAT_RG88:
  25                 case GBM_FORMAT_GR88:
  26                 case GBM_FORMAT_RGB332:
  27                 case GBM_FORMAT_BGR233:
  28                 case GBM_FORMAT_XRGB4444:
  29                 case GBM_FORMAT_XBGR4444:
  30                 case GBM_FORMAT_RGBX4444:
  31                 case GBM_FORMAT_BGRX4444:
  32                 case GBM_FORMAT_ARGB4444:
  33                 case GBM_FORMAT_ABGR4444:
  34                 case GBM_FORMAT_RGBA4444:
  35                 case GBM_FORMAT_BGRA4444:
  36                 case GBM_FORMAT_XRGB1555:
  37                 case GBM_FORMAT_XBGR1555:
  38                 case GBM_FORMAT_RGBX5551:
  39                 case GBM_FORMAT_BGRX5551:
  40                 case GBM_FORMAT_ARGB1555:
  41                 case GBM_FORMAT_ABGR1555:
  42                 case GBM_FORMAT_RGBA5551:
  43                 case GBM_FORMAT_BGRA5551:
  44                 case GBM_FORMAT_RGB565:
  45                 case GBM_FORMAT_BGR565:
  46                 case GBM_FORMAT_YUYV:
  47                 case GBM_FORMAT_YVYU:
  48                 case GBM_FORMAT_UYVY:
  49                 case GBM_FORMAT_VYUY:
  50                 case GBM_FORMAT_RGB888:
  51                 case GBM_FORMAT_BGR888:
  52                 case GBM_FORMAT_XRGB8888:
  53                 case GBM_FORMAT_XBGR8888:
  54                 case GBM_FORMAT_RGBX8888:
  55                 case GBM_FORMAT_BGRX8888:
  56                 case GBM_FORMAT_ARGB8888:
  57                 case GBM_FORMAT_ABGR8888:
  58                 case GBM_FORMAT_RGBA8888:
  59                 case GBM_FORMAT_BGRA8888:
  60                 case GBM_FORMAT_XRGB2101010:
  61                 case GBM_FORMAT_XBGR2101010:
  62                 case GBM_FORMAT_RGBX1010102:
  63                 case GBM_FORMAT_BGRX1010102:
  64                 case GBM_FORMAT_ARGB2101010:
  65                 case GBM_FORMAT_ABGR2101010:
  66                 case GBM_FORMAT_RGBA1010102:
  67                 case GBM_FORMAT_BGRA1010102:
  68                 case GBM_FORMAT_AYUV:
  69                         return 1;
  70                 case GBM_FORMAT_NV12:
  71                         return 2;
  72         }
  73
  74         fprintf(stderr, "minigbm: UNKNOWN FORMAT %d\n", format);
  75         return 0;
  76 }
  77
  78 int gbm_bpp_from_format(uint32_t format)
  79 {
  80         switch(format)
  81         {
  82                 case GBM_FORMAT_C8:
  83                 case GBM_FORMAT_R8:
  84                 case GBM_FORMAT_RGB332:
  85                 case GBM_FORMAT_BGR233:
  86                         return 8;
  87
  88                 case GBM_FORMAT_NV12:
  89                         return 12;
  90
  91                 case GBM_FORMAT_RG88:
  92                 case GBM_FORMAT_GR88:
  93                 case GBM_FORMAT_XRGB4444:
  94                 case GBM_FORMAT_XBGR4444:
  95                 case GBM_FORMAT_RGBX4444:
  96                 case GBM_FORMAT_BGRX4444:
  97                 case GBM_FORMAT_ARGB4444:
  98                 case GBM_FORMAT_ABGR4444:
  99                 case GBM_FORMAT_RGBA4444:
 100                 case GBM_FORMAT_BGRA4444:
 101                 case GBM_FORMAT_XRGB1555:
 102                 case GBM_FORMAT_XBGR1555:
 103                 case GBM_FORMAT_RGBX5551:
 104                 case GBM_FORMAT_BGRX5551:
 105                 case GBM_FORMAT_ARGB1555:
 106                 case GBM_FORMAT_ABGR1555:
 107                 case GBM_FORMAT_RGBA5551:
 108                 case GBM_FORMAT_BGRA5551:
 109                 case GBM_FORMAT_RGB565:
 110                 case GBM_FORMAT_BGR565:
 111                 case GBM_FORMAT_YUYV:
 112                 case GBM_FORMAT_YVYU:
 113                 case GBM_FORMAT_UYVY:
 114                 case GBM_FORMAT_VYUY:
 115                         return 16;
 116
 117                 case GBM_FORMAT_RGB888:
 118                 case GBM_FORMAT_BGR888:
 119                         return 24;
 120
 121                 case GBM_FORMAT_XRGB8888:
 122                 case GBM_FORMAT_XBGR8888:
 123                 case GBM_FORMAT_RGBX8888:
 124                 case GBM_FORMAT_BGRX8888:
 125                 case GBM_FORMAT_ARGB8888:
 126                 case GBM_FORMAT_ABGR8888:
 127                 case GBM_FORMAT_RGBA8888:
 128                 case GBM_FORMAT_BGRA8888:
 129                 case GBM_FORMAT_XRGB2101010:
 130                 case GBM_FORMAT_XBGR2101010:
 131                 case GBM_FORMAT_RGBX1010102:
 132                 case GBM_FORMAT_BGRX1010102:
 133                 case GBM_FORMAT_ARGB2101010:
 134                 case GBM_FORMAT_ABGR2101010:
 135                 case GBM_FORMAT_RGBA1010102:
 136                 case GBM_FORMAT_BGRA1010102:
 137                 case GBM_FORMAT_AYUV:
 138                         return 32;
 139         }
 140
 141         fprintf(stderr, "minigbm: UNKNOWN FORMAT %d\n", format);
 142         return 0;
 143 }
 144
 145 int gbm_stride_from_format(uint32_t format, uint32_t width)
 146 {
 147         /* Only single-plane formats are supported */
 148         assert(gbm_num_planes_from_format(format) == 1);
 149         return DIV_ROUND_UP(width * gbm_bpp_from_format(format), 8);
 150 }
 151
 152 int gbm_is_format_supported(struct gbm_bo *bo)
 153 {
 154         return 1;
 155 }
 156
 157 int gbm_dumb_bo_create(struct gbm_bo *bo, uint32_t width, uint32_t height,
 158                        uint32_t format, uint32_t flags)
 159 {
 160         struct drm_mode_create_dumb create_dumb;
 161         int ret;
 162
 163         /* Only single-plane formats are supported */
 164         assert(gbm_num_planes_from_format(format) == 1);
 165
 166         memset(&create_dumb, 0, sizeof(create_dumb));
 167         create_dumb.height = height;
 168         create_dumb.width = width;
 169         create_dumb.bpp = gbm_bpp_from_format(format);
 170         create_dumb.flags = 0;
 171
 172         ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
 173         if (ret) {
 174                 fprintf(stderr, "minigbm: DRM_IOCTL_MODE_CREATE_DUMB failed\n");
 175                 return ret;
 176         }
 177
 178         bo->handles[0].u32 = create_dumb.handle;
 179         bo->offsets[0] = 0;
 180         bo->sizes[0] = create_dumb.size;
 181         bo->strides[0] = create_dumb.pitch;
 182
 183         return 0;
 184 }
 185
 186 int gbm_dumb_bo_destroy(struct gbm_bo *bo)
 187 {
 188         struct drm_mode_destroy_dumb destroy_dumb;
 189         int ret;
 190
 191         memset(&destroy_dumb, 0, sizeof(destroy_dumb));
 192         destroy_dumb.handle = bo->handles[0].u32;
 193
 194         ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
 195         if (ret) {
 196                 fprintf(stderr, "minigbm: DRM_IOCTL_MODE_DESTROY_DUMB failed "
 197                                 "(handle=%x)\n", bo->handles[0].u32);
 198                 return ret;
 199         }
 200
 201         return 0;
 202 }
 203
 204 int gbm_gem_bo_destroy(struct gbm_bo *bo)
 205 {
 206         struct drm_gem_close gem_close;
 207         int ret, error = 0;
 208         size_t plane, i;
 209
 210         for (plane = 0; plane < bo->num_planes; plane++) {
 211                 bool already_closed = false;
 212                 for (i = 1; i < plane && !already_closed; i++)
 213                         if (bo->handles[i-1].u32 == bo->handles[plane].u32)
 214                                 already_closed = true;
 215                 if (already_closed)
 216                         continue;
 217
 218                 memset(&gem_close, 0, sizeof(gem_close));
 219                 gem_close.handle = bo->handles[plane].u32;
 220
 221                 ret = drmIoctl(bo->gbm->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 222                 if (ret) {
 223                         fprintf(stderr, "minigbm: DRM_IOCTL_GEM_CLOSE failed "
 224                                         "(handle=%x) error %d\n",
 225                                         bo->handles[plane].u32, ret);
 226                         error = ret;
 227                 }
 228         }
 229
 230         return error;
 231 }