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_10_10_10_2(uint32_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 147 {
 148         internal_run<uint32_t>(out_data, NULL, NULL, NULL, GL_UNSIGNED_INT_2_10_10_10_REV, format, color_space, gamma_curve, alpha_format);
 149 }
 150
 151 template<class T>
 152 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)
 153 {
 154         if (!finalized) {
 155                 finalize_chain(color_space, gamma_curve, alpha_format);
 156         }
 157
 158         GLuint type;
 159         if (framebuffer_format == GL_RGBA8) {
 160                 type = GL_UNSIGNED_BYTE;
 161         } else if (framebuffer_format == GL_RGBA16F || framebuffer_format == GL_RGBA32F) {
 162                 type = GL_FLOAT;
 163         } else if (framebuffer_format == GL_RGB10_A2) {
 164                 type = GL_UNSIGNED_INT_2_10_10_10_REV;
 165         } else {
 166                 // Add more here as needed.
 167                 assert(false);
 168         }
 169
 170         unsigned num_outputs;
 171         if (out_data4 != NULL) {
 172                 num_outputs = 4;
 173         } else if (out_data3 != NULL) {
 174                 num_outputs = 3;
 175         } else if (out_data2 != NULL) {
 176                 num_outputs = 2;
 177         } else {
 178                 num_outputs = 1;
 179         }
 180
 181         GLuint fbo, texnum[4];
 182
 183         glGenTextures(num_outputs, texnum);
 184         check_error();
 185         for (unsigned i = 0; i < num_outputs; ++i) {
 186                 glBindTexture(GL_TEXTURE_2D, texnum[i]);
 187                 check_error();
 188                 glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, type, NULL);
 189                 check_error();
 190         }
 191
 192         glGenFramebuffers(1, &fbo);
 193         check_error();
 194         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 195         check_error();
 196         for (unsigned i = 0; i < num_outputs; ++i) {
 197                 glFramebufferTexture2D(
 198                         GL_FRAMEBUFFER,
 199                         GL_COLOR_ATTACHMENT0 + i,
 200                         GL_TEXTURE_2D,
 201                         texnum[i],
 202                         0);
 203                 check_error();
 204         }
 205
 206         GLenum bufs[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
 207         glDrawBuffers(num_outputs, bufs);
 208
 209         chain.render_to_fbo(fbo, width, height);
 210
 211         T *data[4] = { out_data, out_data2, out_data3, out_data4 };
 212
 213         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 214         check_error();
 215         for (unsigned i = 0; i < num_outputs; ++i) {
 216                 T *ptr = data[i];
 217                 glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
 218                 if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
 219                         // GLES will only read GL_RGBA.
 220                         T *temp = new T[width * height * 4];
 221                         glReadPixels(0, 0, width, height, GL_RGBA, internal_format, temp);
 222                         check_error();
 223                         if (format == GL_ALPHA) {
 224                                 for (unsigned i = 0; i < width * height; ++i) {
 225                                         ptr[i] = temp[i * 4 + 3];
 226                                 }
 227                         } else if (format == GL_BLUE) {
 228                                 for (unsigned i = 0; i < width * height; ++i) {
 229                                         ptr[i] = temp[i * 4 + 2];
 230                                 }
 231                         } else {
 232                                 for (unsigned i = 0; i < width * height; ++i) {
 233                                         ptr[i] = temp[i * 4];
 234                                 }
 235                         }
 236                         delete[] temp;
 237                 } else {
 238                         glReadPixels(0, 0, width, height, format, internal_format, ptr);
 239                         check_error();
 240                 }
 241
 242                 if (format == GL_RGBA && (type == GL_UNSIGNED_BYTE || type == GL_FLOAT)) {
 243                         vertical_flip(ptr, width * 4, height);
 244                 } else {
 245                         vertical_flip(ptr, width, height);
 246                 }
 247         }
 248
 249         glDeleteFramebuffers(1, &fbo);
 250         check_error();
 251         glDeleteTextures(num_outputs, texnum);
 252         check_error();
 253 }
 254
 255 void EffectChainTester::add_output(const ImageFormat &format, OutputAlphaFormat alpha_format)
 256 {
 257         chain.add_output(format, alpha_format);
 258         output_added = true;
 259 }
 260
 261 void EffectChainTester::add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format, const YCbCrFormat &ycbcr_format, YCbCrOutputSplitting output_splitting)
 262 {
 263         chain.add_ycbcr_output(format, alpha_format, ycbcr_format, output_splitting);
 264         output_added = true;
 265 }
 266
 267 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 268 {
 269         assert(!finalized);
 270         if (!output_added) {
 271                 ImageFormat image_format;
 272                 image_format.color_space = color_space;
 273                 image_format.gamma_curve = gamma_curve;
 274                 chain.add_output(image_format, alpha_format);
 275                 output_added = true;
 276         }
 277         chain.finalize();
 278         finalized = true;
 279 }
 280
 281 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 282 {
 283         float largest_difference = -1.0f;
 284         float squared_difference = 0.0f;
 285         int largest_diff_x = -1, largest_diff_y = -1;
 286
 287         for (unsigned y = 0; y < height; ++y) {
 288                 for (unsigned x = 0; x < width; ++x) {
 289                         float diff = ref[y * width + x] - result[y * width + x];
 290                         if (fabs(diff) > largest_difference) {
 291                                 largest_difference = fabs(diff);
 292                                 largest_diff_x = x;
 293                                 largest_diff_y = y;
 294                         }
 295                         squared_difference += diff * diff;
 296                 }
 297         }
 298
 299         EXPECT_LT(largest_difference, largest_difference_limit)
 300                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 301                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 302                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 303
 304         float rms = sqrt(squared_difference) / (width * height);
 305         EXPECT_LT(rms, rms_limit);
 306
 307         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 308                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 309
 310                 fprintf(stderr, "Reference:\n");
 311                 for (unsigned y = 0; y < height; ++y) {
 312                         for (unsigned x = 0; x < width; ++x) {
 313                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 314                         }
 315                         fprintf(stderr, "\n");
 316                 }
 317
 318                 fprintf(stderr, "\nResult:\n");
 319                 for (unsigned y = 0; y < height; ++y) {
 320                         for (unsigned x = 0; x < width; ++x) {
 321                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 322                         }
 323                         fprintf(stderr, "\n");
 324                 }
 325         }
 326 }
 327
 328 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 329 {
 330         assert(width > 0);
 331         assert(height > 0);
 332
 333         float *ref_float = new float[width * height];
 334         float *result_float = new float[width * height];
 335
 336         for (unsigned y = 0; y < height; ++y) {
 337                 for (unsigned x = 0; x < width; ++x) {
 338                         ref_float[y * width + x] = ref[y * width + x];
 339                         result_float[y * width + x] = result[y * width + x];
 340                 }
 341         }
 342
 343         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 344
 345         delete[] ref_float;
 346         delete[] result_float;
 347 }
 348
 349 void expect_equal(const int *ref, const int *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 350 {
 351         assert(width > 0);
 352         assert(height > 0);
 353
 354         float *ref_float = new float[width * height];
 355         float *result_float = new float[width * height];
 356
 357         for (unsigned y = 0; y < height; ++y) {
 358                 for (unsigned x = 0; x < width; ++x) {
 359                         ref_float[y * width + x] = ref[y * width + x];
 360                         result_float[y * width + x] = result[y * width + x];
 361                 }
 362         }
 363
 364         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 365
 366         delete[] ref_float;
 367         delete[] result_float;
 368 }
 369
 370 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)
 371 {
 372         double squared_difference = 0.0;
 373         for (unsigned i = 0; i < num_values; ++i) {
 374                 double absolute_error = fabs(expected[i] - result[i]);
 375                 squared_difference += absolute_error * absolute_error;
 376                 EXPECT_LT(absolute_error, absolute_error_limit);
 377
 378                 if (expected[i] > 0.0) {
 379                         double relative_error = fabs(absolute_error / expected[i]);
 380
 381                         EXPECT_LT(relative_error, relative_error_limit);
 382                 }
 383                 if (i < num_values - 1) {
 384                         double delta = expected[i + 1] - expected[i];
 385                         double local_relative_error = fabs(absolute_error / delta);
 386                         EXPECT_LT(local_relative_error, local_relative_error_limit);
 387                 }
 388         }
 389         double rms = sqrt(squared_difference) / num_values;
 390         EXPECT_LT(rms, rms_limit);
 391 }
 392
 393 double srgb_to_linear(double x)
 394 {
 395         // From the Wikipedia article on sRGB.
 396         if (x < 0.04045) {
 397                 return x / 12.92;
 398         } else {
 399                 return pow((x + 0.055) / 1.055, 2.4);
 400         }
 401 }
 402
 403 double linear_to_srgb(double x)
 404 {
 405         // From the Wikipedia article on sRGB.
 406         if (x < 0.0031308) {
 407                 return 12.92 * x;
 408         } else {
 409                 return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
 410         }
 411 }
 412
 413 }  // namespace movit