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 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
  12                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  13         : chain(width, height), width(width), height(height), finalized(false)
  14 {
  15         init_movit();
  16
  17         if (data != NULL) {
  18                 add_input(data, pixel_format, color_space, gamma_curve);
  19         }
  20
  21         glGenTextures(1, &texnum);
  22         check_error();
  23         glBindTexture(GL_TEXTURE_2D, texnum);
  24         check_error();
  25         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  26         check_error();
  27
  28         glGenFramebuffers(1, &fbo);
  29         check_error();
  30         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  31         check_error();
  32         glFramebufferTexture2D(
  33                 GL_FRAMEBUFFER,
  34                 GL_COLOR_ATTACHMENT0,
  35                 GL_TEXTURE_2D,
  36                 texnum,
  37                 0);
  38         check_error();
  39         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  40         check_error();
  41 }
  42
  43 EffectChainTester::~EffectChainTester()
  44 {
  45         glDeleteFramebuffers(1, &fbo);
  46         check_error();
  47         glDeleteTextures(1, &texnum);
  48         check_error();
  49 }
  50
  51 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  52 {
  53         ImageFormat format;
  54         format.color_space = color_space;
  55         format.gamma_curve = gamma_curve;
  56
  57         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  58         input->set_pixel_data(data);
  59         chain.add_input(input);
  60         return input;
  61 }
  62
  63 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  64 {
  65         ImageFormat format;
  66         format.color_space = color_space;
  67         format.gamma_curve = gamma_curve;
  68
  69         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, width, height);
  70         input->set_pixel_data(data);
  71         chain.add_input(input);
  72         return input;
  73 }
  74
  75 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve)
  76 {
  77         if (!finalized) {
  78                 ImageFormat image_format;
  79                 image_format.color_space = color_space;
  80                 image_format.gamma_curve = gamma_curve;
  81                 chain.add_output(image_format);
  82                 chain.finalize();
  83                 finalized = true;
  84         }
  85
  86         chain.render_to_fbo(fbo, width, height);
  87
  88         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  89         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
  90
  91         if (format == GL_RGBA) {
  92                 width *= 4;
  93         }
  94
  95         // Flip upside-down to compensate for different origin.
  96         for (unsigned y = 0; y < height / 2; ++y) {
  97                 unsigned flip_y = height - y - 1;
  98                 for (unsigned x = 0; x < width; ++x) {
  99                         std::swap(out_data[y * width + x], out_data[flip_y * width + x]);
 100                 }
 101         }
 102 }
 103
 104 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 105 {
 106         float largest_difference = -1.0f;
 107         float squared_difference = 0.0f;
 108         int largest_diff_x = -1, largest_diff_y = -1;
 109
 110         for (unsigned y = 0; y < height; ++y) {
 111                 for (unsigned x = 0; x < width; ++x) {
 112                         float diff = ref[y * width + x] - result[y * width + x];
 113                         if (fabs(diff) > largest_difference) {
 114                                 largest_difference = fabs(diff);
 115                                 largest_diff_x = x;
 116                                 largest_diff_y = y;
 117                         }
 118                         squared_difference += diff * diff;
 119                 }
 120         }
 121
 122         EXPECT_LT(largest_difference, largest_difference_limit)
 123                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 124                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 125                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 126
 127         float rms = sqrt(squared_difference) / (width * height);
 128         EXPECT_LT(rms, rms_limit);
 129
 130         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 131                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 132
 133                 fprintf(stderr, "Reference:\n");
 134                 for (unsigned y = 0; y < height; ++y) {
 135                         for (unsigned x = 0; x < width; ++x) {
 136                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 137                         }
 138                         fprintf(stderr, "\n");
 139                 }
 140
 141                 fprintf(stderr, "\nResult:\n");
 142                 for (unsigned y = 0; y < height; ++y) {
 143                         for (unsigned x = 0; x < width; ++x) {
 144                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 145                         }
 146                         fprintf(stderr, "\n");
 147                 }
 148         }
 149 }