git.sesse.net Git - movit/blob - test_util.cpp

   1 #include <assert.h>
   2 #include <math.h>
   3 #include <stdio.h>
   4 #include <algorithm>
   5 #include <epoxy/gl.h>
   6 #include <gtest/gtest.h>
   7 #include <gtest/gtest-message.h>
   8
   9 #include "flat_input.h"
  10 #include "init.h"
  11 #include "resource_pool.h"
  12 #include "test_util.h"
  13 #include "util.h"
  14
  15 using namespace std;
  16
  17 namespace movit {
  18
  19 class Input;
  20
  21 namespace {
  22
  23 // Not thread-safe, but this isn't a big problem for testing.
  24 ResourcePool *get_static_pool()
  25 {
  26         static ResourcePool *resource_pool = NULL;
  27         if (!resource_pool) {
  28                 resource_pool = new ResourcePool();
  29         }
  30         return resource_pool;
  31 }
  32
  33 // Flip upside-down to compensate for different origin.
  34 template<class T>
  35 void vertical_flip(T *data, unsigned width, unsigned height)
  36 {
  37         for (unsigned y = 0; y < height / 2; ++y) {
  38                 unsigned flip_y = height - y - 1;
  39                 for (unsigned x = 0; x < width; ++x) {
  40                         swap(data[y * width + x], data[flip_y * width + x]);
  41                 }
  42         }
  43 }
  44
  45 }  // namespace
  46
  47 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
  48                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
  49                                      GLenum framebuffer_format)
  50         : chain(width, height, get_static_pool()),
  51           width(width),
  52           height(height),
  53           framebuffer_format(framebuffer_format),
  54           output_added(false),
  55           finalized(false)
  56 {
  57         CHECK(init_movit(".", MOVIT_DEBUG_OFF));
  58
  59         if (data != NULL) {
  60                 add_input(data, pixel_format, color_space, gamma_curve);
  61         }
  62 }
  63
  64 EffectChainTester::~EffectChainTester()
  65 {
  66 }
  67
  68 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
  69 {
  70         ImageFormat format;
  71         format.color_space = color_space;
  72         format.gamma_curve = gamma_curve;
  73
  74         if (input_width == -1) {
  75                 input_width = width;
  76         }
  77         if (input_height == -1) {
  78                 input_height = height;
  79         }
  80
  81         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, input_width, input_height);
  82         input->set_pixel_data(data);
  83         chain.add_input(input);
  84         return input;
  85 }
  86
  87 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve, int input_width, int input_height)
  88 {
  89         ImageFormat format;
  90         format.color_space = color_space;
  91         format.gamma_curve = gamma_curve;
  92
  93         if (input_width == -1) {
  94                 input_width = width;
  95         }
  96         if (input_height == -1) {
  97                 input_height = height;
  98         }
  99
 100         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, input_width, input_height);
 101         input->set_pixel_data(data);
 102         chain.add_input(input);
 103         return input;
 104 }
 105
 106 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 107 {
 108         internal_run<float>(out_data, NULL, NULL, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
 109 }
 110
 111 void EffectChainTester::run(float *out_data, float *out_data2, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 112 {
 113         internal_run<float>(out_data, out_data2, NULL, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
 114 }
 115
 116 void EffectChainTester::run(float *out_data, float *out_data2, float *out_data3, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 117 {
 118         internal_run<float>(out_data, out_data2, out_data3, NULL, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
 119 }
 120
 121 void EffectChainTester::run(float *out_data, float *out_data2, float *out_data3, float *out_data4, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 122 {
 123         internal_run(out_data, out_data2, out_data3, out_data4, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
 124 }
 125
 126 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 127 {
 128         internal_run<unsigned char>(out_data, NULL, NULL, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 129 }
 130
 131 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 132 {
 133         internal_run<unsigned char>(out_data, out_data2, NULL, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 134 }
 135
 136 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, unsigned char *out_data3, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 137 {
 138         internal_run<unsigned char>(out_data, out_data2, out_data3, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 139 }
 140
 141 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, unsigned char *out_data3, unsigned char *out_data4, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 142 {
 143         internal_run(out_data, out_data2, out_data3, out_data4, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 144 }
 145
 146 void EffectChainTester::run(uint16_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 147 {
 148         internal_run<uint16_t>(out_data, NULL, NULL, NULL, GL_UNSIGNED_SHORT, format, color_space, gamma_curve, alpha_format);
 149 }
 150
 151 void EffectChainTester::run_10_10_10_2(uint32_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 152 {
 153         internal_run<uint32_t>(out_data, NULL, NULL, NULL, GL_UNSIGNED_INT_2_10_10_10_REV, format, color_space, gamma_curve, alpha_format);
 154 }
 155
 156 template<class T>
 157 void EffectChainTester::internal_run(T *out_data, T *out_data2, T *out_data3, T *out_data4, GLenum internal_format, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 158 {
 159         if (!finalized) {
 160                 finalize_chain(color_space, gamma_curve, alpha_format);
 161         }
 162
 163         GLuint type;
 164         if (framebuffer_format == GL_RGBA8) {
 165                 type = GL_UNSIGNED_BYTE;
 166         } else if (framebuffer_format == GL_RGBA16) {
 167                 type = GL_UNSIGNED_SHORT;
 168         } else if (framebuffer_format == GL_RGBA16F || framebuffer_format == GL_RGBA32F) {
 169                 type = GL_FLOAT;
 170         } else if (framebuffer_format == GL_RGB10_A2) {
 171                 type = GL_UNSIGNED_INT_2_10_10_10_REV;
 172         } else {
 173                 // Add more here as needed.
 174                 assert(false);
 175         }
 176
 177         unsigned num_outputs;
 178         if (out_data4 != NULL) {
 179                 num_outputs = 4;
 180         } else if (out_data3 != NULL) {
 181                 num_outputs = 3;
 182         } else if (out_data2 != NULL) {
 183                 num_outputs = 2;
 184         } else {
 185                 num_outputs = 1;
 186         }
 187
 188         GLuint fbo, texnum[4];
 189
 190         glGenTextures(num_outputs, texnum);
 191         check_error();
 192         for (unsigned i = 0; i < num_outputs; ++i) {
 193                 glBindTexture(GL_TEXTURE_2D, texnum[i]);
 194                 check_error();
 195                 glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, type, NULL);
 196                 check_error();
 197         }
 198
 199         glGenFramebuffers(1, &fbo);
 200         check_error();
 201         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 202         check_error();
 203         for (unsigned i = 0; i < num_outputs; ++i) {
 204                 glFramebufferTexture2D(
 205                         GL_FRAMEBUFFER,
 206                         GL_COLOR_ATTACHMENT0 + i,
 207                         GL_TEXTURE_2D,
 208                         texnum[i],
 209                         0);
 210                 check_error();
 211         }
 212
 213         GLenum bufs[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
 214         glDrawBuffers(num_outputs, bufs);
 215
 216         chain.render_to_fbo(fbo, width, height);
 217
 218         T *data[4] = { out_data, out_data2, out_data3, out_data4 };
 219
 220         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 221         check_error();
 222         for (unsigned i = 0; i < num_outputs; ++i) {
 223                 T *ptr = data[i];
 224                 glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
 225                 if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
 226                         // GLES will only read GL_RGBA.
 227                         T *temp = new T[width * height * 4];
 228                         glReadPixels(0, 0, width, height, GL_RGBA, internal_format, temp);
 229                         check_error();
 230                         if (format == GL_ALPHA) {
 231                                 for (unsigned i = 0; i < width * height; ++i) {
 232                                         ptr[i] = temp[i * 4 + 3];
 233                                 }
 234                         } else if (format == GL_BLUE) {
 235                                 for (unsigned i = 0; i < width * height; ++i) {
 236                                         ptr[i] = temp[i * 4 + 2];
 237                                 }
 238                         } else {
 239                                 for (unsigned i = 0; i < width * height; ++i) {
 240                                         ptr[i] = temp[i * 4];
 241                                 }
 242                         }
 243                         delete[] temp;
 244                 } else {
 245                         glReadPixels(0, 0, width, height, format, internal_format, ptr);
 246                         check_error();
 247                 }
 248
 249                 if (format == GL_RGBA && (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_SHORT || type == GL_FLOAT)) {
 250                         vertical_flip(ptr, width * 4, height);
 251                 } else {
 252                         vertical_flip(ptr, width, height);
 253                 }
 254         }
 255
 256         glDeleteFramebuffers(1, &fbo);
 257         check_error();
 258         glDeleteTextures(num_outputs, texnum);
 259         check_error();
 260 }
 261
 262 void EffectChainTester::add_output(const ImageFormat &format, OutputAlphaFormat alpha_format)
 263 {
 264         chain.add_output(format, alpha_format);
 265         output_added = true;
 266 }
 267
 268 void EffectChainTester::add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format, const YCbCrFormat &ycbcr_format, YCbCrOutputSplitting output_splitting, GLenum type)
 269 {
 270         chain.add_ycbcr_output(format, alpha_format, ycbcr_format, output_splitting, type);
 271         output_added = true;
 272 }
 273
 274 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 275 {
 276         assert(!finalized);
 277         if (!output_added) {
 278                 ImageFormat image_format;
 279                 image_format.color_space = color_space;
 280                 image_format.gamma_curve = gamma_curve;
 281                 chain.add_output(image_format, alpha_format);
 282                 output_added = true;
 283         }
 284         chain.finalize();
 285         finalized = true;
 286 }
 287
 288 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 289 {
 290         float largest_difference = -1.0f;
 291         float squared_difference = 0.0f;
 292         int largest_diff_x = -1, largest_diff_y = -1;
 293
 294         for (unsigned y = 0; y < height; ++y) {
 295                 for (unsigned x = 0; x < width; ++x) {
 296                         float diff = ref[y * width + x] - result[y * width + x];
 297                         if (fabs(diff) > largest_difference) {
 298                                 largest_difference = fabs(diff);
 299                                 largest_diff_x = x;
 300                                 largest_diff_y = y;
 301                         }
 302                         squared_difference += diff * diff;
 303                 }
 304         }
 305
 306         EXPECT_LT(largest_difference, largest_difference_limit)
 307                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 308                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 309                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 310
 311         float rms = sqrt(squared_difference) / (width * height);
 312         EXPECT_LT(rms, rms_limit);
 313
 314         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 315                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 316
 317                 fprintf(stderr, "Reference:\n");
 318                 for (unsigned y = 0; y < height; ++y) {
 319                         for (unsigned x = 0; x < width; ++x) {
 320                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 321                         }
 322                         fprintf(stderr, "\n");
 323                 }
 324
 325                 fprintf(stderr, "\nResult:\n");
 326                 for (unsigned y = 0; y < height; ++y) {
 327                         for (unsigned x = 0; x < width; ++x) {
 328                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 329                         }
 330                         fprintf(stderr, "\n");
 331                 }
 332         }
 333 }
 334
 335 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 336 {
 337         assert(width > 0);
 338         assert(height > 0);
 339
 340         float *ref_float = new float[width * height];
 341         float *result_float = new float[width * height];
 342
 343         for (unsigned y = 0; y < height; ++y) {
 344                 for (unsigned x = 0; x < width; ++x) {
 345                         ref_float[y * width + x] = ref[y * width + x];
 346                         result_float[y * width + x] = result[y * width + x];
 347                 }
 348         }
 349
 350         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 351
 352         delete[] ref_float;
 353         delete[] result_float;
 354 }
 355
 356 void expect_equal(const uint16_t *ref, const uint16_t *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 357 {
 358         assert(width > 0);
 359         assert(height > 0);
 360
 361         float *ref_float = new float[width * height];
 362         float *result_float = new float[width * height];
 363
 364         for (unsigned y = 0; y < height; ++y) {
 365                 for (unsigned x = 0; x < width; ++x) {
 366                         ref_float[y * width + x] = ref[y * width + x];
 367                         result_float[y * width + x] = result[y * width + x];
 368                 }
 369         }
 370
 371         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 372
 373         delete[] ref_float;
 374         delete[] result_float;
 375 }
 376
 377 void expect_equal(const int *ref, const int *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 378 {
 379         assert(width > 0);
 380         assert(height > 0);
 381
 382         float *ref_float = new float[width * height];
 383         float *result_float = new float[width * height];
 384
 385         for (unsigned y = 0; y < height; ++y) {
 386                 for (unsigned x = 0; x < width; ++x) {
 387                         ref_float[y * width + x] = ref[y * width + x];
 388                         result_float[y * width + x] = result[y * width + x];
 389                 }
 390         }
 391
 392         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 393
 394         delete[] ref_float;
 395         delete[] result_float;
 396 }
 397
 398 void test_accuracy(const float *expected, const float *result, unsigned num_values, double absolute_error_limit, double relative_error_limit, double local_relative_error_limit, double rms_limit)
 399 {
 400         double squared_difference = 0.0;
 401         for (unsigned i = 0; i < num_values; ++i) {
 402                 double absolute_error = fabs(expected[i] - result[i]);
 403                 squared_difference += absolute_error * absolute_error;
 404                 EXPECT_LT(absolute_error, absolute_error_limit);
 405
 406                 if (expected[i] > 0.0) {
 407                         double relative_error = fabs(absolute_error / expected[i]);
 408
 409                         EXPECT_LT(relative_error, relative_error_limit);
 410                 }
 411                 if (i < num_values - 1) {
 412                         double delta = expected[i + 1] - expected[i];
 413                         double local_relative_error = fabs(absolute_error / delta);
 414                         EXPECT_LT(local_relative_error, local_relative_error_limit);
 415                 }
 416         }
 417         double rms = sqrt(squared_difference) / num_values;
 418         EXPECT_LT(rms, rms_limit);
 419 }
 420
 421 double srgb_to_linear(double x)
 422 {
 423         // From the Wikipedia article on sRGB.
 424         if (x < 0.04045) {
 425                 return x / 12.92;
 426         } else {
 427                 return pow((x + 0.055) / 1.055, 2.4);
 428         }
 429 }
 430
 431 double linear_to_srgb(double x)
 432 {
 433         // From the Wikipedia article on sRGB.
 434         if (x < 0.0031308) {
 435                 return 12.92 * x;
 436         } else {
 437                 return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
 438         }
 439 }
 440
 441 }  // namespace movit