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

   1 #include "test_util.h"
   2 #include "flat_input.h"
   3 #include "gtest/gtest.h"
   4
   5 #include <stdio.h>
   6 #include <math.h>
   7
   8 #include <algorithm>
   9
  10 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height, MovitPixelFormat pixel_format, ColorSpace color_space, GammaCurve gamma_curve)
  11         : chain(width, height), width(width), height(height)
  12 {
  13         add_input(data, pixel_format, color_space, gamma_curve);
  14
  15         glGenTextures(1, &texnum);
  16         check_error();
  17         glBindTexture(GL_TEXTURE_2D, texnum);
  18         check_error();
  19         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  20         check_error();
  21
  22         glGenFramebuffers(1, &fbo);
  23         check_error();
  24         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  25         check_error();
  26         glFramebufferTexture2D(
  27                 GL_FRAMEBUFFER,
  28                 GL_COLOR_ATTACHMENT0,
  29                 GL_TEXTURE_2D,
  30                 texnum,
  31                 0);
  32         check_error();
  33         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  34         check_error();
  35 }
  36
  37 EffectChainTester::~EffectChainTester()
  38 {
  39         glDeleteFramebuffers(1, &fbo);
  40         glDeleteTextures(1, &texnum);
  41 }
  42
  43 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, ColorSpace color_space, GammaCurve gamma_curve)
  44 {
  45         ImageFormat format;
  46         format.color_space = color_space;
  47         format.gamma_curve = gamma_curve;
  48
  49         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  50         input->set_pixel_data(data);
  51         chain.add_input(input);
  52         return input;
  53 }
  54
  55 void EffectChainTester::run(float *out_data, GLenum format, ColorSpace color_space, GammaCurve gamma_curve)
  56 {
  57         ImageFormat image_format;
  58         image_format.color_space = color_space;
  59         image_format.gamma_curve = gamma_curve;
  60         chain.add_output(image_format);
  61         chain.finalize();
  62
  63         chain.render_to_fbo(fbo, width, height);
  64
  65         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  66         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
  67
  68         // Flip upside-down to compensate for different origin.
  69         for (unsigned y = 0; y < height / 2; ++y) {
  70                 unsigned flip_y = height - y - 1;
  71                 for (unsigned x = 0; x < width; ++x) {
  72                         std::swap(out_data[y * width + x], out_data[flip_y * width + x]);
  73                 }
  74         }
  75 }
  76
  77 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
  78 {
  79         float largest_difference = -1.0f;
  80         float squared_difference = 0.0f;
  81         int largest_diff_x = -1, largest_diff_y = -1;
  82
  83         for (unsigned y = 0; y < height; ++y) {
  84                 for (unsigned x = 0; x < width; ++x) {
  85                         float diff = ref[y * width + x] - result[y * width + x];
  86                         if (fabs(diff) > largest_difference) {
  87                                 largest_difference = fabs(diff);
  88                                 largest_diff_x = x;
  89                                 largest_diff_y = y;
  90                         }
  91                         squared_difference += diff * diff;
  92                 }
  93         }
  94
  95         EXPECT_LT(largest_difference, largest_difference_limit)
  96                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
  97                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
  98                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
  99
 100         float rms = sqrt(squared_difference) / (width * height);
 101         EXPECT_LT(rms, rms_limit);
 102
 103         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 104                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 105
 106                 fprintf(stderr, "Reference:\n");
 107                 for (unsigned y = 0; y < height; ++y) {
 108                         for (unsigned x = 0; x < width; ++x) {
 109                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 110                         }
 111                         fprintf(stderr, "\n");
 112                 }
 113
 114                 fprintf(stderr, "\nResult:\n");
 115                 for (unsigned y = 0; y < height; ++y) {
 116                         for (unsigned x = 0; x < width; ++x) {
 117                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 118                         }
 119                         fprintf(stderr, "\n");
 120                 }
 121         }
 122 }