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

   1 #include <assert.h>
   2 #include <gtest/gtest-message.h>
   3 #include <math.h>
   4 #include <stdio.h>
   5 #include <algorithm>
   6 #include <ostream>
   7
   8 #include "flat_input.h"
   9 #include "gtest/gtest.h"
  10 #include "init.h"
  11 #include "test_util.h"
  12 #include "util.h"
  13
  14 class Input;
  15
  16 namespace {
  17
  18 // Flip upside-down to compensate for different origin.
  19 template<class T>
  20 void vertical_flip(T *data, unsigned width, unsigned height)
  21 {
  22         for (unsigned y = 0; y < height / 2; ++y) {
  23                 unsigned flip_y = height - y - 1;
  24                 for (unsigned x = 0; x < width; ++x) {
  25                         std::swap(data[y * width + x], data[flip_y * width + x]);
  26                 }
  27         }
  28 }
  29
  30 }  // namespace
  31
  32 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
  33                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
  34                                      GLenum framebuffer_format)
  35         : chain(width, height), width(width), height(height), finalized(false)
  36 {
  37         init_movit(".", MOVIT_DEBUG_ON);
  38
  39         if (data != NULL) {
  40                 add_input(data, pixel_format, color_space, gamma_curve);
  41         }
  42
  43         glGenTextures(1, &texnum);
  44         check_error();
  45         glBindTexture(GL_TEXTURE_2D, texnum);
  46         check_error();
  47         glTexImage2D(GL_TEXTURE_2D, 0, framebuffer_format, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
  48         check_error();
  49
  50         glGenFramebuffers(1, &fbo);
  51         check_error();
  52         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
  53         check_error();
  54         glFramebufferTexture2D(
  55                 GL_FRAMEBUFFER,
  56                 GL_COLOR_ATTACHMENT0,
  57                 GL_TEXTURE_2D,
  58                 texnum,
  59                 0);
  60         check_error();
  61         glBindFramebuffer(GL_FRAMEBUFFER, 0);
  62         check_error();
  63 }
  64
  65 EffectChainTester::~EffectChainTester()
  66 {
  67         glDeleteFramebuffers(1, &fbo);
  68         check_error();
  69         glDeleteTextures(1, &texnum);
  70         check_error();
  71 }
  72
  73 Input *EffectChainTester::add_input(const float *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  74 {
  75         ImageFormat format;
  76         format.color_space = color_space;
  77         format.gamma_curve = gamma_curve;
  78
  79         FlatInput *input = new FlatInput(format, pixel_format, GL_FLOAT, width, height);
  80         input->set_pixel_data(data);
  81         chain.add_input(input);
  82         return input;
  83 }
  84
  85 Input *EffectChainTester::add_input(const unsigned char *data, MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve)
  86 {
  87         ImageFormat format;
  88         format.color_space = color_space;
  89         format.gamma_curve = gamma_curve;
  90
  91         FlatInput *input = new FlatInput(format, pixel_format, GL_UNSIGNED_BYTE, width, height);
  92         input->set_pixel_data(data);
  93         chain.add_input(input);
  94         return input;
  95 }
  96
  97 void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
  98 {
  99         if (!finalized) {
 100                 finalize_chain(color_space, gamma_curve, alpha_format);
 101         }
 102
 103         chain.render_to_fbo(fbo, width, height);
 104
 105         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 106         glReadPixels(0, 0, width, height, format, GL_FLOAT, out_data);
 107
 108         if (format == GL_RGBA) {
 109                 width *= 4;
 110         }
 111
 112         vertical_flip(out_data, width, height);
 113 }
 114
 115 void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 116 {
 117         if (!finalized) {
 118                 finalize_chain(color_space, gamma_curve, alpha_format);
 119         }
 120
 121         chain.render_to_fbo(fbo, width, height);
 122
 123         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 124         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, out_data);
 125
 126         if (format == GL_RGBA) {
 127                 width *= 4;
 128         }
 129
 130         vertical_flip(out_data, width, height);
 131 }
 132
 133 void EffectChainTester::finalize_chain(Colorspace color_space, GammaCurve gamma_curve, OutputAlphaFormat alpha_format)
 134 {
 135         assert(!finalized);
 136         ImageFormat image_format;
 137         image_format.color_space = color_space;
 138         image_format.gamma_curve = gamma_curve;
 139         chain.add_output(image_format, alpha_format);
 140         chain.finalize();
 141         finalized = true;
 142 }
 143
 144 void expect_equal(const float *ref, const float *result, unsigned width, unsigned height, float largest_difference_limit, float rms_limit)
 145 {
 146         float largest_difference = -1.0f;
 147         float squared_difference = 0.0f;
 148         int largest_diff_x = -1, largest_diff_y = -1;
 149
 150         for (unsigned y = 0; y < height; ++y) {
 151                 for (unsigned x = 0; x < width; ++x) {
 152                         float diff = ref[y * width + x] - result[y * width + x];
 153                         if (fabs(diff) > largest_difference) {
 154                                 largest_difference = fabs(diff);
 155                                 largest_diff_x = x;
 156                                 largest_diff_y = y;
 157                         }
 158                         squared_difference += diff * diff;
 159                 }
 160         }
 161
 162         EXPECT_LT(largest_difference, largest_difference_limit)
 163                 << "Largest difference is in x=" << largest_diff_x << ", y=" << largest_diff_y << ":\n"
 164                 << "Reference: " << ref[largest_diff_y * width + largest_diff_x] << "\n"
 165                 << "Result:    " << result[largest_diff_y * width + largest_diff_x];
 166
 167         float rms = sqrt(squared_difference) / (width * height);
 168         EXPECT_LT(rms, rms_limit);
 169
 170         if (largest_difference >= largest_difference_limit || rms >= rms_limit) {
 171                 fprintf(stderr, "Dumping matrices for easier debugging, since at least one test failed.\n");
 172
 173                 fprintf(stderr, "Reference:\n");
 174                 for (unsigned y = 0; y < height; ++y) {
 175                         for (unsigned x = 0; x < width; ++x) {
 176                                 fprintf(stderr, "%7.4f ", ref[y * width + x]);
 177                         }
 178                         fprintf(stderr, "\n");
 179                 }
 180
 181                 fprintf(stderr, "\nResult:\n");
 182                 for (unsigned y = 0; y < height; ++y) {
 183                         for (unsigned x = 0; x < width; ++x) {
 184                                 fprintf(stderr, "%7.4f ", result[y * width + x]);
 185                         }
 186                         fprintf(stderr, "\n");
 187                 }
 188         }
 189 }
 190
 191 void expect_equal(const unsigned char *ref, const unsigned char *result, unsigned width, unsigned height, unsigned largest_difference_limit, float rms_limit)
 192 {
 193         assert(width > 0);
 194         assert(height > 0);
 195
 196         float *ref_float = new float[width * height];
 197         float *result_float = new float[width * height];
 198
 199         for (unsigned y = 0; y < height; ++y) {
 200                 for (unsigned x = 0; x < width; ++x) {
 201                         ref_float[y * width + x] = ref[y * width + x];
 202                         result_float[y * width + x] = result[y * width + x];
 203                 }
 204         }
 205
 206         expect_equal(ref_float, result_float, width, height, largest_difference_limit, rms_limit);
 207
 208         delete[] ref_float;
 209         delete[] result_float;
 210 }