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                                      GLenum framebuffer_format)
  30         : chain(width, height), width(width), height(height), finalized(false)
  31 {
  32         init_movit(".", MOVIT_DEBUG_ON);
  33
  34         if (data != NULL) {
  35                 add_input(data, pixel_format, color_space, gamma_curve);
  36         }
  37
  38         glGenTextures(1, &texnum);
  39         check_error();
  40         glBindTexture(GL_TEXTURE_2D, texnum);
  41         check_error();
  42         glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  43         check_error();
  44
  45         glGenFramebuffers(1, &fbo);
  46         check_error();
  47         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  48         check_error();
  49         glFramebufferTexture2D(
  50                 GL_FRAMEBUFFER,
  51                 GL_COLOR_ATTACHMENT0,
  52                 GL_TEXTURE_2D,
  53                 texnum,
  54                 0);
  55         check_error();
  56         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  57         check_error();
  58 }
  59
  60 EffectChainTester::~EffectChainTester()
  61 {
  62         glDeleteFramebuffers(1, &fbo);
  63         check_error();
  64         glDeleteTextures(1, &texnum);
  65         check_error();
  66 }
  67
  68 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  69 {
  70         ImageFormat format;
  71         format.color_space = color_space;
  72         format.gamma_curve = gamma_curve;
  73
  74         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  75         input->set_pixel_data(data);
  76         chain.add_input(input);
  77         return input;
  78 }
  79
  80 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  81 {
  82         ImageFormat format;
  83         format.color_space = color_space;
  84         format.gamma_curve = gamma_curve;
  85
  86         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, width, height);
  87         input->set_pixel_data(data);
  88         chain.add_input(input);
  89         return input;
  90 }
  91
  92 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
  93 {
  94         if (!finalized) {
  95                 finalize_chain(color_space, gamma_curve, alpha_format);
  96         }
  97
  98         chain.render_to_fbo(fbo, width, height);
  99
 100         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 101         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
 102
 103         if (format == GL_RGBA) {
 104                 width *= 4;
 105         }
 106
 107         vertical_flip(out_data, width, height);
 108 }
 109
 110 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 111 {
 112         if (!finalized) {
 113                 finalize_chain(color_space, gamma_curve, alpha_format);
 114         }
 115
 116         chain.render_to_fbo(fbo, width, height);
 117
 118         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 119         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, out_data);
 120
 121         if (format == GL_RGBA) {
 122                 width *= 4;
 123         }
 124
 125         vertical_flip(out_data, width, height);
 126 }
 127
 128 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 129 {
 130         assert(!finalized);
 131         ImageFormat image_format;
 132         image_format.color_space = color_space;
 133         image_format.gamma_curve = gamma_curve;
 134         chain.add_output(image_format, alpha_format);
 135         chain.finalize();
 136         finalized = true;
 137 }
 138
 139 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 140 {
 141         float largest_difference = -1.0f;
 142         float squared_difference = 0.0f;
 143         int largest_diff_x = -1, largest_diff_y = -1;
 144
 145         for (unsigned y = 0; y < height; ++y) {
 146                 for (unsigned x = 0; x < width; ++x) {
 147                         float diff = ref[y * width + x] - result[y * width + x];
 148                         if (fabs(diff) > largest_difference) {
 149                                 largest_difference = fabs(diff);
 150                                 largest_diff_x = x;
 151                                 largest_diff_y = y;
 152                         }
 153                         squared_difference += diff * diff;
 154                 }
 155         }
 156
 157         EXPECT_LT(largest_difference, largest_difference_limit)
 158                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 159                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 160                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 161
 162         float rms = sqrt(squared_difference) / (width * height);
 163         EXPECT_LT(rms, rms_limit);
 164
 165         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 166                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 167
 168                 fprintf(stderr, "Reference:\n");
 169                 for (unsigned y = 0; y < height; ++y) {
 170                         for (unsigned x = 0; x < width; ++x) {
 171                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 172                         }
 173                         fprintf(stderr, "\n");
 174                 }
 175
 176                 fprintf(stderr, "\nResult:\n");
 177                 for (unsigned y = 0; y < height; ++y) {
 178                         for (unsigned x = 0; x < width; ++x) {
 179                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 180                         }
 181                         fprintf(stderr, "\n");
 182                 }
 183         }
 184 }
 185
 186 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 187 {
 188         assert(width > 0);
 189         assert(height > 0);
 190
 191         float *ref_float = new float[width * height];
 192         float *result_float = new float[width * height];
 193
 194         for (unsigned y = 0; y < height; ++y) {
 195                 for (unsigned x = 0; x < width; ++x) {
 196                         ref_float[y * width + x] = ref[y * width + x];
 197                         result_float[y * width + x] = result[y * width + x];
 198                 }
 199         }
 200
 201         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 202
 203         delete[] ref_float;
 204         delete[] result_float;
 205 }