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, 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, 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(out_data, out_data2, out_data3, GL_FLOAT, format, color_space, gamma_curve, alpha_format);
 119 }
 120
 121 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 122 {
 123         internal_run<unsigned char>(out_data, NULL, NULL, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 124 }
 125
 126 void EffectChainTester::run(unsigned char *out_data, unsigned char *out_data2, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 127 {
 128         internal_run<unsigned char>(out_data, out_data2, 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, unsigned char *out_data3, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 132 {
 133         internal_run(out_data, out_data2, out_data3, GL_UNSIGNED_BYTE, format, color_space, gamma_curve, alpha_format);
 134 }
 135
 136 void EffectChainTester::run_10_10_10_2(uint32_t *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 137 {
 138         internal_run<uint32_t>(out_data, NULL, NULL, GL_UNSIGNED_INT_2_10_10_10_REV, format, color_space, gamma_curve, alpha_format);
 139 }
 140
 141 template<class T>
 142 void EffectChainTester::internal_run(T *out_data, T *out_data2, T *out_data3, GLenum internal_format, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 143 {
 144         if (!finalized) {
 145                 finalize_chain(color_space, gamma_curve, alpha_format);
 146         }
 147
 148         GLuint type;
 149         if (framebuffer_format == GL_RGBA8) {
 150                 type = GL_UNSIGNED_BYTE;
 151         } else if (framebuffer_format == GL_RGBA16F || framebuffer_format == GL_RGBA32F) {
 152                 type = GL_FLOAT;
 153         } else if (framebuffer_format == GL_RGB10_A2) {
 154                 type = GL_UNSIGNED_INT_2_10_10_10_REV;
 155         } else {
 156                 // Add more here as needed.
 157                 assert(false);
 158         }
 159
 160         unsigned num_outputs;
 161         if (out_data3 != NULL) {
 162                 num_outputs = 3;
 163         } else if (out_data2 != NULL) {
 164                 num_outputs = 2;
 165         } else {
 166                 num_outputs = 1;
 167         }
 168
 169         GLuint fbo, texnum[3];
 170
 171         glGenTextures(num_outputs, texnum);
 172         check_error();
 173         for (unsigned i = 0; i < num_outputs; ++i) {
 174                 glBindTexture(GL_TEXTURE_2D, texnum[i]);
 175                 check_error();
 176                 glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, type, NULL);
 177                 check_error();
 178         }
 179
 180         glGenFramebuffers(1, &fbo);
 181         check_error();
 182         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 183         check_error();
 184         for (unsigned i = 0; i < num_outputs; ++i) {
 185                 glFramebufferTexture2D(
 186                         GL_FRAMEBUFFER,
 187                         GL_COLOR_ATTACHMENT0 + i,
 188                         GL_TEXTURE_2D,
 189                         texnum[i],
 190                         0);
 191                 check_error();
 192         }
 193
 194         GLenum bufs[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
 195         glDrawBuffers(num_outputs, bufs);
 196
 197         chain.render_to_fbo(fbo, width, height);
 198
 199         T *data[3] = { out_data, out_data2, out_data3 };
 200
 201         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 202         check_error();
 203         for (unsigned i = 0; i < num_outputs; ++i) {
 204                 T *ptr = data[i];
 205                 glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
 206                 if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
 207                         // GLES will only read GL_RGBA.
 208                         T *temp = new T[width * height * 4];
 209                         glReadPixels(0, 0, width, height, GL_RGBA, internal_format, temp);
 210                         check_error();
 211                         if (format == GL_ALPHA) {
 212                                 for (unsigned i = 0; i < width * height; ++i) {
 213                                         ptr[i] = temp[i * 4 + 3];
 214                                 }
 215                         } else if (format == GL_BLUE) {
 216                                 for (unsigned i = 0; i < width * height; ++i) {
 217                                         ptr[i] = temp[i * 4 + 2];
 218                                 }
 219                         } else {
 220                                 for (unsigned i = 0; i < width * height; ++i) {
 221                                         ptr[i] = temp[i * 4];
 222                                 }
 223                         }
 224                         delete[] temp;
 225                 } else {
 226                         glReadPixels(0, 0, width, height, format, internal_format, ptr);
 227                         check_error();
 228                 }
 229
 230                 if (format == GL_RGBA && (type == GL_UNSIGNED_BYTE || type == GL_FLOAT)) {
 231                         vertical_flip(ptr, width * 4, height);
 232                 } else {
 233                         vertical_flip(ptr, width, height);
 234                 }
 235         }
 236
 237         glDeleteFramebuffers(1, &fbo);
 238         check_error();
 239         glDeleteTextures(num_outputs, texnum);
 240         check_error();
 241 }
 242
 243 void EffectChainTester::add_output(const ImageFormat &format, OutputAlphaFormat alpha_format)
 244 {
 245         chain.add_output(format, alpha_format);
 246         output_added = true;
 247 }
 248
 249 void EffectChainTester::add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format, const YCbCrFormat &ycbcr_format, YCbCrOutputSplitting output_splitting)
 250 {
 251         chain.add_ycbcr_output(format, alpha_format, ycbcr_format, output_splitting);
 252         output_added = true;
 253 }
 254
 255 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 256 {
 257         assert(!finalized);
 258         if (!output_added) {
 259                 ImageFormat image_format;
 260                 image_format.color_space = color_space;
 261                 image_format.gamma_curve = gamma_curve;
 262                 chain.add_output(image_format, alpha_format);
 263                 output_added = true;
 264         }
 265         chain.finalize();
 266         finalized = true;
 267 }
 268
 269 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 270 {
 271         float largest_difference = -1.0f;
 272         float squared_difference = 0.0f;
 273         int largest_diff_x = -1, largest_diff_y = -1;
 274
 275         for (unsigned y = 0; y < height; ++y) {
 276                 for (unsigned x = 0; x < width; ++x) {
 277                         float diff = ref[y * width + x] - result[y * width + x];
 278                         if (fabs(diff) > largest_difference) {
 279                                 largest_difference = fabs(diff);
 280                                 largest_diff_x = x;
 281                                 largest_diff_y = y;
 282                         }
 283                         squared_difference += diff * diff;
 284                 }
 285         }
 286
 287         EXPECT_LT(largest_difference, largest_difference_limit)
 288                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 289                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 290                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 291
 292         float rms = sqrt(squared_difference) / (width * height);
 293         EXPECT_LT(rms, rms_limit);
 294
 295         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 296                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 297
 298                 fprintf(stderr, "Reference:\n");
 299                 for (unsigned y = 0; y < height; ++y) {
 300                         for (unsigned x = 0; x < width; ++x) {
 301                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 302                         }
 303                         fprintf(stderr, "\n");
 304                 }
 305
 306                 fprintf(stderr, "\nResult:\n");
 307                 for (unsigned y = 0; y < height; ++y) {
 308                         for (unsigned x = 0; x < width; ++x) {
 309                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 310                         }
 311                         fprintf(stderr, "\n");
 312                 }
 313         }
 314 }
 315
 316 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 317 {
 318         assert(width > 0);
 319         assert(height > 0);
 320
 321         float *ref_float = new float[width * height];
 322         float *result_float = new float[width * height];
 323
 324         for (unsigned y = 0; y < height; ++y) {
 325                 for (unsigned x = 0; x < width; ++x) {
 326                         ref_float[y * width + x] = ref[y * width + x];
 327                         result_float[y * width + x] = result[y * width + x];
 328                 }
 329         }
 330
 331         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 332
 333         delete[] ref_float;
 334         delete[] result_float;
 335 }
 336
 337 void expect_equal(const int *ref, const int *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 338 {
 339         assert(width > 0);
 340         assert(height > 0);
 341
 342         float *ref_float = new float[width * height];
 343         float *result_float = new float[width * height];
 344
 345         for (unsigned y = 0; y < height; ++y) {
 346                 for (unsigned x = 0; x < width; ++x) {
 347                         ref_float[y * width + x] = ref[y * width + x];
 348                         result_float[y * width + x] = result[y * width + x];
 349                 }
 350         }
 351
 352         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 353
 354         delete[] ref_float;
 355         delete[] result_float;
 356 }
 357
 358 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)
 359 {
 360         double squared_difference = 0.0;
 361         for (unsigned i = 0; i < num_values; ++i) {
 362                 double absolute_error = fabs(expected[i] - result[i]);
 363                 squared_difference += absolute_error * absolute_error;
 364                 EXPECT_LT(absolute_error, absolute_error_limit);
 365
 366                 if (expected[i] > 0.0) {
 367                         double relative_error = fabs(absolute_error / expected[i]);
 368
 369                         EXPECT_LT(relative_error, relative_error_limit);
 370                 }
 371                 if (i < num_values - 1) {
 372                         double delta = expected[i + 1] - expected[i];
 373                         double local_relative_error = fabs(absolute_error / delta);
 374                         EXPECT_LT(local_relative_error, local_relative_error_limit);
 375                 }
 376         }
 377         double rms = sqrt(squared_difference) / num_values;
 378         EXPECT_LT(rms, rms_limit);
 379 }
 380
 381 double srgb_to_linear(double x)
 382 {
 383         // From the Wikipedia article on sRGB.
 384         if (x < 0.04045) {
 385                 return x / 12.92;
 386         } else {
 387                 return pow((x + 0.055) / 1.055, 2.4);
 388         }
 389 }
 390
 391 double linear_to_srgb(double x)
 392 {
 393         // From the Wikipedia article on sRGB.
 394         if (x < 0.0031308) {
 395                 return 12.92 * x;
 396         } else {
 397                 return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
 398         }
 399 }
 400
 401 }  // namespace movit