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

   1 #include "init.h"
   2 #include "test_util.h"
   3 #include "flat_input.h"
   4 #include "gtest/gtest.h"
   5
   6 #include <stdio.h>
   7 #include <math.h>
   8
   9 #include <algorithm>
  10
  11 namespace {
  12
  13 // Flip upside-down to compensate for different origin.
  14 template<class T>
  15 void vertical_flip(T *data, unsigned width, unsigned height)
  16 {
  17         for (unsigned y = 0; y < height / 2; ++y) {
  18                 unsigned flip_y = height - y - 1;
  19                 for (unsigned x = 0; x < width; ++x) {
  20                         std::swap(data[y * width + x], data[flip_y * width + x]);
  21                 }
  22         }
  23 }
  24
  25 }  // namespace
  26
  27 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
  28                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  29         : chain(width, height), width(width), height(height), finalized(false)
  30 {
  31         init_movit();
  32
  33         if (data != NULL) {
  34                 add_input(data, pixel_format, color_space, gamma_curve);
  35         }
  36
  37         glGenTextures(1, &texnum);
  38         check_error();
  39         glBindTexture(GL_TEXTURE_2D, texnum);
  40         check_error();
  41         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  42         check_error();
  43
  44         glGenFramebuffers(1, &fbo);
  45         check_error();
  46         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  47         check_error();
  48         glFramebufferTexture2D(
  49                 GL_FRAMEBUFFER,
  50                 GL_COLOR_ATTACHMENT0,
  51                 GL_TEXTURE_2D,
  52                 texnum,
  53                 0);
  54         check_error();
  55         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  56         check_error();
  57 }
  58
  59 EffectChainTester::~EffectChainTester()
  60 {
  61         glDeleteFramebuffers(1, &fbo);
  62         check_error();
  63         glDeleteTextures(1, &texnum);
  64         check_error();
  65 }
  66
  67 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  68 {
  69         ImageFormat format;
  70         format.color_space = color_space;
  71         format.gamma_curve = gamma_curve;
  72
  73         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  74         input->set_pixel_data(data);
  75         chain.add_input(input);
  76         return input;
  77 }
  78
  79 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  80 {
  81         ImageFormat format;
  82         format.color_space = color_space;
  83         format.gamma_curve = gamma_curve;
  84
  85         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, width, height);
  86         input->set_pixel_data(data);
  87         chain.add_input(input);
  88         return input;
  89 }
  90
  91 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve)
  92 {
  93         if (!finalized) {
  94                 finalize_chain(color_space, gamma_curve);
  95         }
  96
  97         chain.render_to_fbo(fbo, width, height);
  98
  99         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 100         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
 101
 102         if (format == GL_RGBA) {
 103                 width *= 4;
 104         }
 105
 106         vertical_flip(out_data, width, height);
 107 }
 108
 109 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve)
 110 {
 111         if (!finalized) {
 112                 finalize_chain(color_space, gamma_curve);
 113         }
 114
 115         chain.render_to_fbo(fbo, width, height);
 116
 117         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 118         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, out_data);
 119
 120         if (format == GL_RGBA) {
 121                 width *= 4;
 122         }
 123
 124         vertical_flip(out_data, width, height);
 125 }
 126
 127 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve)
 128 {
 129         assert(!finalized);
 130         ImageFormat image_format;
 131         image_format.color_space = color_space;
 132         image_format.gamma_curve = gamma_curve;
 133         chain.add_output(image_format);
 134         chain.finalize();
 135         finalized = true;
 136 }
 137
 138 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 139 {
 140         float largest_difference = -1.0f;
 141         float squared_difference = 0.0f;
 142         int largest_diff_x = -1, largest_diff_y = -1;
 143
 144         for (unsigned y = 0; y < height; ++y) {
 145                 for (unsigned x = 0; x < width; ++x) {
 146                         float diff = ref[y * width + x] - result[y * width + x];
 147                         if (fabs(diff) > largest_difference) {
 148                                 largest_difference = fabs(diff);
 149                                 largest_diff_x = x;
 150                                 largest_diff_y = y;
 151                         }
 152                         squared_difference += diff * diff;
 153                 }
 154         }
 155
 156         EXPECT_LT(largest_difference, largest_difference_limit)
 157                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 158                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 159                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 160
 161         float rms = sqrt(squared_difference) / (width * height);
 162         EXPECT_LT(rms, rms_limit);
 163
 164         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 165                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 166
 167                 fprintf(stderr, "Reference:\n");
 168                 for (unsigned y = 0; y < height; ++y) {
 169                         for (unsigned x = 0; x < width; ++x) {
 170                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 171                         }
 172                         fprintf(stderr, "\n");
 173                 }
 174
 175                 fprintf(stderr, "\nResult:\n");
 176                 for (unsigned y = 0; y < height; ++y) {
 177                         for (unsigned x = 0; x < width; ++x) {
 178                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 179                         }
 180                         fprintf(stderr, "\n");
 181                 }
 182         }
 183 }
 184
 185 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 186 {
 187         float *ref_float = new float[width * height];
 188         float *result_float = new float[width * height];
 189
 190         for (unsigned y = 0; y < height; ++y) {
 191                 for (unsigned x = 0; x < width; ++x) {
 192                         ref_float[y * width + x] = ref[y * width + x];
 193                         result_float[y * width + x] = result[y * width + x];
 194                 }
 195         }
 196
 197         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 198 }