libkmstest/testpat.cpp

   1
   2 #include <chrono>
   3 #include <cstring>
   4 #include <cassert>
   5
   6 #include <xf86drm.h>
   7 #include <xf86drmMode.h>
   8 #include <drm_fourcc.h>
   9 #include <drm.h>
  10 #include <drm_mode.h>
  11
  12 #include "kms++.h"
  13 #include "test.h"
  14
  15 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
  16
  17 namespace kms
  18 {
  19 static void draw_rgb_pixel(DumbFramebuffer& buf, unsigned x, unsigned y, RGB color)
  20 {
  21         switch (buf.format()) {
  22         case PixelFormat::XRGB8888:
  23         case PixelFormat::ARGB8888:
  24         {
  25                 uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
  26                 *p = color.rgb888();
  27                 break;
  28         }
  29         case PixelFormat::XBGR8888:
  30         case PixelFormat::ABGR8888:
  31         {
  32                 uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
  33                 *p = color.bgr888();
  34                 break;
  35         }
  36         case PixelFormat::RGB565:
  37         {
  38                 uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
  39                 *p = color.rgb565();
  40                 break;
  41         }
  42         default:
  43                 throw std::invalid_argument("invalid pixelformat");
  44         }
  45 }
  46
  47 static void draw_yuv422_macropixel(DumbFramebuffer& buf, unsigned x, unsigned y, YUV yuv1, YUV yuv2)
  48 {
  49         ASSERT((x & 1) == 0);
  50
  51         uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
  52
  53         uint8_t y0 = yuv1.y;
  54         uint8_t y1 = yuv2.y;
  55         uint8_t u = (yuv1.u + yuv2.u) / 2;
  56         uint8_t v = (yuv1.v + yuv2.v) / 2;
  57
  58         switch (buf.format()) {
  59         case PixelFormat::UYVY:
  60                 p[0] = u;
  61                 p[1] = y0;
  62                 p[2] = v;
  63                 p[3] = y1;
  64                 break;
  65
  66         case PixelFormat::YUYV:
  67                 p[0] = y0;
  68                 p[1] = u;
  69                 p[2] = y1;
  70                 p[3] = v;
  71                 break;
  72
  73         case PixelFormat::YVYU:
  74                 p[0] = y0;
  75                 p[1] = v;
  76                 p[2] = y1;
  77                 p[3] = u;
  78                 break;
  79
  80         case PixelFormat::VYUY:
  81                 p[0] = v;
  82                 p[1] = y0;
  83                 p[2] = u;
  84                 p[3] = y1;
  85                 break;
  86
  87         default:
  88                 throw std::invalid_argument("invalid pixelformat");
  89         }
  90 }
  91
  92 static void draw_yuv420_macropixel(DumbFramebuffer& buf, unsigned x, unsigned y,
  93                                    YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
  94 {
  95         ASSERT((x & 1) == 0);
  96         ASSERT((y & 1) == 0);
  97
  98         uint8_t *py1 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 0) + x);
  99         uint8_t *py2 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 1) + x);
 100
 101         uint8_t *puv = (uint8_t*)(buf.map(1) + buf.stride(1) * (y / 2) + x);
 102
 103         uint8_t y0 = yuv1.y;
 104         uint8_t y1 = yuv2.y;
 105         uint8_t y2 = yuv3.y;
 106         uint8_t y3 = yuv4.y;
 107         uint8_t u = (yuv1.u + yuv2.u + yuv3.u + yuv4.u) / 4;
 108         uint8_t v = (yuv1.v + yuv2.v + yuv3.v + yuv4.v) / 4;
 109
 110         switch (buf.format()) {
 111         case PixelFormat::NV12:
 112                 py1[0] = y0;
 113                 py1[1] = y1;
 114                 py2[0] = y2;
 115                 py2[1] = y3;
 116                 puv[0] = u;
 117                 puv[1] = v;
 118                 break;
 119
 120         case PixelFormat::NV21:
 121                 py1[0] = y0;
 122                 py1[1] = y1;
 123                 py2[0] = y2;
 124                 py2[1] = y3;
 125                 puv[0] = v;
 126                 puv[1] = u;
 127                 break;
 128
 129         default:
 130                 throw std::invalid_argument("invalid pixelformat");
 131         }
 132 }
 133
 134 static RGB get_test_pattern_pixel(DumbFramebuffer& fb, unsigned x, unsigned y)
 135 {
 136         const unsigned w = fb.width();
 137         const unsigned h = fb.height();
 138
 139         const unsigned mw = 20;
 140
 141         const unsigned xm1 = mw;
 142         const unsigned xm2 = w - mw - 1;
 143         const unsigned ym1 = mw;
 144         const unsigned ym2 = h - mw - 1;
 145
 146         // white margin lines
 147         if (x == xm1 || x == xm2 || y == ym1 || y == ym2)
 148                 return RGB(255, 255, 255);
 149         // white box outlines to corners
 150         else if ((x == 0 || x == w - 1) && (y < ym1 || y > ym2))
 151                 return RGB(255, 255, 255);
 152         // white box outlines to corners
 153         else if ((y == 0 || y == h - 1) && (x < xm1 || x > xm2))
 154                 return RGB(255, 255, 255);
 155         // blue bar on the left
 156         else if (x < xm1 && (y > ym1 && y < ym2))
 157                 return RGB(0, 0, 255);
 158         // blue bar on the top
 159         else if (y < ym1 && (x > xm1 && x < xm2))
 160                 return RGB(0, 0, 255);
 161         // red bar on the right
 162         else if (x > xm2 && (y > ym1 && y < ym2))
 163                 return RGB(255, 0, 0);
 164         // red bar on the bottom
 165         else if (y > ym2 && (x > xm1 && x < xm2))
 166                 return RGB(255, 0, 0);
 167         // inside the margins
 168         else if (x > xm1 && x < xm2 && y > ym1 && y < ym2) {
 169                 // diagonal line
 170                 if (x == y || w - x == h - y)
 171                         return RGB(255, 255, 255);
 172                 // diagonal line
 173                 else if (w - x == y || x == h - y)
 174                         return RGB(255, 255, 255);
 175                 else {
 176                         int t = (x - xm1 - 1) * 8 / (xm2 - xm1 - 1);
 177                         unsigned r = 0, g = 0, b = 0;
 178
 179                         unsigned c = (y - ym1 - 1) % 256;
 180
 181                         switch (t) {
 182                         case 0:
 183                                 r = c;
 184                                 break;
 185                         case 1:
 186                                 g = c;
 187                                 break;
 188                         case 2:
 189                                 b = c;
 190                                 break;
 191                         case 3:
 192                                 g = b = c;
 193                                 break;
 194                         case 4:
 195                                 r = b = c;
 196                                 break;
 197                         case 5:
 198                                 r = g = c;
 199                                 break;
 200                         case 6:
 201                                 r = g = b = c;
 202                                 break;
 203                         case 7:
 204                                 break;
 205                         }
 206
 207                         return RGB(r, g, b);
 208                 }
 209         } else {
 210                 // black corners
 211                 return RGB(0, 0, 0);
 212         }
 213 }
 214
 215 static void draw_test_pattern_impl(DumbFramebuffer& fb)
 216 {
 217         unsigned x, y;
 218         unsigned w = fb.width();
 219         unsigned h = fb.height();
 220
 221         switch (fb.format()) {
 222         case PixelFormat::XRGB8888:
 223         case PixelFormat::XBGR8888:
 224         case PixelFormat::ARGB8888:
 225         case PixelFormat::ABGR8888:
 226         case PixelFormat::RGB565:
 227                 for (y = 0; y < h; y++) {
 228                         for (x = 0; x < w; x++) {
 229                                 RGB pixel = get_test_pattern_pixel(fb, x, y);
 230                                 draw_rgb_pixel(fb, x, y, pixel);
 231                         }
 232                 }
 233                 break;
 234
 235         case PixelFormat::UYVY:
 236         case PixelFormat::YUYV:
 237         case PixelFormat::YVYU:
 238         case PixelFormat::VYUY:
 239                 for (y = 0; y < h; y++) {
 240                         for (x = 0; x < w; x += 2) {
 241                                 RGB pixel1 = get_test_pattern_pixel(fb, x, y);
 242                                 RGB pixel2 = get_test_pattern_pixel(fb, x + 1, y);
 243                                 draw_yuv422_macropixel(fb, x, y, pixel1.yuv(), pixel2.yuv());
 244                         }
 245                 }
 246                 break;
 247
 248         case PixelFormat::NV12:
 249         case PixelFormat::NV21:
 250                 for (y = 0; y < h; y += 2) {
 251                         for (x = 0; x < w; x += 2) {
 252                                 RGB pixel00 = get_test_pattern_pixel(fb, x, y);
 253                                 RGB pixel10 = get_test_pattern_pixel(fb, x + 1, y);
 254                                 RGB pixel01 = get_test_pattern_pixel(fb, x, y + 1);
 255                                 RGB pixel11 = get_test_pattern_pixel(fb, x + 1, y + 1);
 256                                 draw_yuv420_macropixel(fb, x, y,
 257                                                        pixel00.yuv(), pixel10.yuv(),
 258                                                        pixel01.yuv(), pixel11.yuv());
 259                         }
 260                 }
 261                 break;
 262         default:
 263                 throw std::invalid_argument("unknown pixelformat");
 264         }
 265 }
 266
 267 void draw_test_pattern(DumbFramebuffer& fb)
 268 {
 269         using namespace std::chrono;
 270
 271         auto t1 = high_resolution_clock::now();
 272
 273         draw_test_pattern_impl(fb);
 274
 275         auto t2 = high_resolution_clock::now();
 276         auto time_span = duration_cast<microseconds>(t2 - t1);
 277
 278         printf("draw took %u us\n", (unsigned)time_span.count());
 279 }
 280 }