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

   1 #define GL_GLEXT_PROTOTYPES 1
   2 #define NO_SDL_GLEXT 1
   3
   4 #define WIDTH 1280
   5 #define HEIGHT 720
   6
   7 #include <string.h>
   8 #include <math.h>
   9 #include <time.h>
  10 #include <sys/time.h>
  11 #include <assert.h>
  12
  13 #include <string>
  14 #include <vector>
  15 #include <map>
  16
  17 #include <GL/glew.h>
  18
  19 #include <SDL/SDL.h>
  20 #include <SDL/SDL_opengl.h>
  21 #include <SDL/SDL_image.h>
  22
  23 #include "init.h"
  24 #include "effect.h"
  25 #include "effect_chain.h"
  26 #include "util.h"
  27 #include "widgets.h"
  28
  29 #include "flat_input.h"
  30 #include "lift_gamma_gain_effect.h"
  31 #include "saturation_effect.h"
  32 #include "diffusion_effect.h"
  33 #include "overlay_effect.h"
  34 #include "resample_effect.h"
  35 #include "resize_effect.h"
  36
  37 unsigned char result[WIDTH * HEIGHT * 4];
  38
  39 float lift_theta = 0.0f, lift_rad = 0.0f, lift_v = 0.0f;
  40 float gamma_theta = 0.0f, gamma_rad = 0.0f, gamma_v = 0.5f;
  41 float gain_theta = 0.0f, gain_rad = 0.0f, gain_v = 0.25f;
  42 float saturation = 1.0f;
  43
  44 //float radius = 0.3f;
  45 // float inner_radius = 0.3f;
  46 float blur_radius = 20.0f;
  47 float blurred_mix_amount = 0.5f;
  48
  49 void update_hsv(Effect *lift_gamma_gain_effect, Effect *saturation_effect)
  50 {
  51         RGBTriplet lift(0.0f, 0.0f, 0.0f);
  52         RGBTriplet gamma(1.0f, 1.0f, 1.0f);
  53         RGBTriplet gain(1.0f, 1.0f, 1.0f);
  54
  55         hsv2rgb_normalized(lift_theta, lift_rad, lift_v, &lift.r, &lift.g, &lift.b);
  56         hsv2rgb_normalized(gamma_theta, gamma_rad, gamma_v * 2.0f, &gamma.r, &gamma.g, &gamma.b);
  57         hsv2rgb_normalized(gain_theta, gain_rad, gain_v * 4.0f, &gain.r, &gain.g, &gain.b);
  58
  59         bool ok = lift_gamma_gain_effect->set_vec3("lift", (float *)&lift);
  60         ok = ok && lift_gamma_gain_effect->set_vec3("gamma", (float *)&gamma);
  61         ok = ok && lift_gamma_gain_effect->set_vec3("gain", (float *)&gain);
  62         assert(ok);
  63
  64         if (saturation < 0.0) {
  65                 saturation = 0.0;
  66         }
  67         ok = saturation_effect->set_float("saturation", saturation);
  68         assert(ok);
  69 }
  70
  71 void mouse(int x, int y)
  72 {
  73         float xf = (x / (float)WIDTH) * 16.0f / 9.0f;
  74         float yf = (HEIGHT - y) / (float)HEIGHT;
  75
  76         if (yf < 0.2f) {
  77                 read_colorwheel(xf, yf, &lift_rad, &lift_theta, &lift_v);
  78         } else if (yf >= 0.2f && yf < 0.4f) {
  79                 read_colorwheel(xf, yf - 0.2f, &gamma_rad, &gamma_theta, &gamma_v);
  80         } else if (yf >= 0.4f && yf < 0.6f) {
  81                 read_colorwheel(xf, yf - 0.4f, &gain_rad, &gain_theta, &gain_v);
  82         } else if (yf >= 0.6f && yf < 0.62f && xf < 0.2f) {
  83                 saturation = (xf / 0.2f) * 4.0f;
  84 #if 0
  85         } else if (yf >= 0.65f && yf < 0.67f && xf < 0.2f) {
  86                 radius = (xf / 0.2f);
  87         } else if (yf >= 0.70f && yf < 0.72f && xf < 0.2f) {
  88                 inner_radius = (xf / 0.2f);
  89 #endif
  90         } else if (yf >= 0.75f && yf < 0.77f && xf < 0.2f) {
  91                 blur_radius = (xf / 0.2f) * 100.0f;
  92         } else if (yf >= 0.80f && yf < 0.82f && xf < 0.2f) {
  93                 blurred_mix_amount = (xf / 0.2f);
  94         }
  95 }
  96
  97 unsigned char *load_image(const char *filename, unsigned *w, unsigned *h)
  98 {
  99         SDL_Surface *img = IMG_Load(filename);
 100         if (img == NULL) {
 101                 fprintf(stderr, "Load of '%s' failed\n", filename);
 102                 exit(1);
 103         }
 104
 105         SDL_PixelFormat rgba_fmt;
 106         rgba_fmt.palette = NULL;
 107         rgba_fmt.BitsPerPixel = 32;
 108         rgba_fmt.BytesPerPixel = 8;
 109         rgba_fmt.Rloss = rgba_fmt.Gloss = rgba_fmt.Bloss = rgba_fmt.Aloss = 0;
 110
 111         // NOTE: Assumes little endian.
 112         rgba_fmt.Rmask = 0x00ff0000;
 113         rgba_fmt.Gmask = 0x0000ff00;
 114         rgba_fmt.Bmask = 0x000000ff;
 115         rgba_fmt.Amask = 0xff000000;
 116
 117         rgba_fmt.Rshift = 16;
 118         rgba_fmt.Gshift = 8;
 119         rgba_fmt.Bshift = 0;
 120         rgba_fmt.Ashift = 24;
 121
 122         rgba_fmt.colorkey = 0;
 123         rgba_fmt.alpha = 255;
 124
 125         SDL_Surface *converted = SDL_ConvertSurface(img, &rgba_fmt, SDL_SWSURFACE);
 126
 127         *w = img->w;
 128         *h = img->h;
 129
 130         SDL_FreeSurface(img);
 131
 132         unsigned char *x = (unsigned char *)converted->pixels;
 133         for (int i = 0; i < img->w * img->h; ++i) {
 134                 if (x[i * 4 + 3] == 0) {
 135                         x[i * 4 + 0] = 255;
 136                         x[i * 4 + 1] = 255;
 137                         x[i * 4 + 2] = 255;
 138                 }
 139         }
 140
 141         return (unsigned char *)converted->pixels;
 142 }
 143
 144 void write_ppm(const char *filename, unsigned char *screenbuf)
 145 {
 146         FILE *fp = fopen(filename, "w");
 147         fprintf(fp, "P6\n%d %d\n255\n", WIDTH, HEIGHT);
 148         for (unsigned y = 0; y < HEIGHT; ++y) {
 149                 unsigned char *srcptr = screenbuf + ((HEIGHT - y - 1) * WIDTH) * 4;
 150                 for (unsigned x = 0; x < WIDTH; ++x) {
 151                         fputc(srcptr[x * 4 + 2], fp);
 152                         fputc(srcptr[x * 4 + 1], fp);
 153                         fputc(srcptr[x * 4 + 0], fp);
 154                 }
 155         }
 156         fclose(fp);
 157 }
 158
 159 int main(int argc, char **argv)
 160 {
 161         bool quit = false;
 162
 163         SDL_Init(SDL_INIT_EVERYTHING);
 164         SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
 165         SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 0);
 166         SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 167         SDL_SetVideoMode(WIDTH, HEIGHT, 0, SDL_OPENGL);
 168         SDL_WM_SetCaption("OpenGL window", NULL);
 169
 170         init_movit(".", MOVIT_DEBUG_ON);
 171         printf("GPU texture subpixel precision: about %.1f bits\n",
 172                 log2(1.0f / movit_texel_subpixel_precision));
 173
 174         unsigned img_w, img_h;
 175         unsigned char *src_img = load_image(argc > 1 ? argv[1] : "blg_wheels_woman_1.jpg", &img_w, &img_h);
 176
 177         EffectChain chain(WIDTH, HEIGHT);
 178         glViewport(0, 0, WIDTH, HEIGHT);
 179
 180         ImageFormat inout_format;
 181         inout_format.color_space = COLORSPACE_sRGB;
 182         inout_format.gamma_curve = GAMMA_LINEAR;
 183
 184         FlatInput *input = new FlatInput(inout_format, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, img_w, img_h);
 185         chain.add_input(input);
 186
 187         unsigned char *src_overlay1 = load_image("overlay1.png", &img_w, &img_h);
 188 #if 0
 189         float *src_bleh = new float[img_w * img_h * 4];
 190         for (int i = 0; i < img_w * img_h; ++i) {
 191                 float r = src_overlay1[i * 4 + 0] / 255.0f;
 192                 float g = src_overlay1[i * 4 + 1] / 255.0f;
 193                 float b = src_overlay1[i * 4 + 2] / 255.0f;
 194                 float a = src_overlay1[i * 4 + 3] / 255.0f;
 195         //      src_bleh[i * 4 + 0] = r * a;
 196         //      src_bleh[i * 4 + 1] = g * a;
 197         //      src_bleh[i * 4 + 2] = b * a;
 198                 src_bleh[i * 4 + 0] = r;
 199                 src_bleh[i * 4 + 1] = g;
 200                 src_bleh[i * 4 + 2] = b;
 201                 src_bleh[i * 4 + 3] = a;
 202         }
 203         FlatInput *overlay1 = new FlatInput(inout_format, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, GL_FLOAT, img_w, img_h);
 204 #endif
 205         FlatInput *overlay1 = new FlatInput(inout_format, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, img_w, img_h);
 206         chain.add_input(overlay1);
 207
 208         unsigned char *src_overlay2 = load_image("overlay2.png", &img_w, &img_h);
 209         FlatInput *overlay2 = new FlatInput(inout_format, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, img_w, img_h);
 210         chain.add_input(overlay2);
 211
 212         Effect *mix1 = chain.add_effect(new OverlayEffect(), overlay2, overlay1);
 213         //Effect *mix1_resized = chain.add_effect(new ResampleEffect(), mix1);
 214         Effect *mix1_resized = chain.add_effect(new ResizeEffect(), mix1);
 215         CHECK(mix1_resized->set_int("width", 1280));
 216         CHECK(mix1_resized->set_int("height", 720));
 217         Effect *mix2 = chain.add_effect(new OverlayEffect(), input, mix1_resized);
 218 //      Effect *mix2 = chain.add_effect(new OverlayEffect(), input, overlay1);
 219
 220         //Effect *lift_gamma_gain_effect = chain.add_effect(new LiftGammaGainEffect());
 221         //Effect *saturation_effect = chain.add_effect(new SaturationEffect());
 222         //Effect *diffusion_effect = chain.add_effect(new DiffusionEffect());
 223         //Effect *vignette_effect = chain.add_effect(new VignetteEffect());
 224         //Effect *sandbox_effect = chain.add_effect(new SandboxEffect());
 225         //sandbox_effect->set_float("parm", 42.0f);
 226         //chain.add_effect(new MirrorEffect());
 227         chain.add_output(inout_format, OUTPUT_ALPHA_POSTMULTIPLIED);
 228         chain.set_dither_bits(8);
 229         chain.finalize();
 230
 231         // generate a PBO to hold the data we read back with glReadPixels()
 232         // (Intel/DRI goes into a slow path if we don't read to PBO)
 233         GLuint pbo;
 234         glGenBuffers(1, &pbo);
 235         glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, pbo);
 236         glBufferData(GL_PIXEL_PACK_BUFFER_ARB, WIDTH * HEIGHT * 4, NULL, GL_STREAM_READ);
 237
 238         make_hsv_wheel_texture();
 239
 240         int frame = 0;
 241         bool screenshot = false;
 242 #if _POSIX_C_SOURCE >= 199309L
 243         struct timespec start, now;
 244         clock_gettime(CLOCK_MONOTONIC, &start);
 245 #else
 246         struct timeval start, now;
 247         gettimeofday(&start, NULL);
 248 #endif
 249
 250         while (!quit) {
 251                 SDL_Event event;
 252                 while (SDL_PollEvent(&event)) {
 253                         if (event.type == SDL_QUIT) {
 254                                 quit = true;
 255                         } else if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_ESCAPE) {
 256                                 quit = true;
 257                         } else if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_F1) {
 258                                 screenshot = true;
 259                         } else if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_LEFT) {
 260                                 mouse(event.button.x, event.button.y);
 261                         } else if (event.type == SDL_MOUSEMOTION && (event.motion.state & SDL_BUTTON(1))) {
 262                                 mouse(event.motion.x, event.motion.y);
 263                         }
 264                 }
 265
 266                 ++frame;
 267
 268                 //update_hsv(lift_gamma_gain_effect, saturation_effect);
 269                 //vignette_effect->set_float("radius", radius);
 270                 //vignette_effect->set_float("inner_radius", inner_radius);
 271                 //vignette_effect->set_vec2("center", (float[]){ 0.7f, 0.5f });
 272
 273                 //CHECK(diffusion_effect->set_float("radius", blur_radius));
 274                 //CHECK(diffusion_effect->set_float("blurred_mix_amount", blurred_mix_amount));
 275
 276                 input->set_pixel_data(src_img);
 277                 overlay1->set_pixel_data(src_overlay1);
 278                 //overlay1->set_pixel_data(src_bleh);
 279                 overlay2->set_pixel_data(src_overlay2);
 280                 chain.render_to_screen();
 281
 282                 glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, pbo);
 283                 check_error();
 284                 glReadPixels(0, 0, WIDTH, HEIGHT, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, BUFFER_OFFSET(0));
 285                 check_error();
 286                 glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, 0);
 287                 check_error();
 288
 289                 glLoadIdentity();
 290                 draw_hsv_wheel(0.0f, lift_rad, lift_theta, lift_v);
 291                 draw_hsv_wheel(0.2f, gamma_rad, gamma_theta, gamma_v);
 292                 draw_hsv_wheel(0.4f, gain_rad, gain_theta, gain_v);
 293                 draw_saturation_bar(0.6f, saturation / 4.0f);
 294 #if 0
 295                 draw_saturation_bar(0.65f, radius);
 296                 draw_saturation_bar(0.70f, inner_radius);
 297 #endif
 298                 draw_saturation_bar(0.75f, blur_radius / 100.0f);
 299                 draw_saturation_bar(0.80f, blurred_mix_amount);
 300
 301                 SDL_GL_SwapBuffers();
 302                 check_error();
 303
 304                 glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, pbo);
 305                 check_error();
 306                 unsigned char *screenbuf = (unsigned char *)glMapBuffer(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY);
 307                 check_error();
 308                 if (screenshot) {
 309                         char filename[256];
 310                         sprintf(filename, "frame%05d.ppm", frame);
 311                         write_ppm(filename, screenbuf);
 312                         printf("Screenshot: %s\n", filename);
 313                         screenshot = false;
 314                 }
 315                 glUnmapBuffer(GL_PIXEL_PACK_BUFFER_ARB);
 316                 check_error();
 317                 glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, 0);
 318                 check_error();
 319
 320 #if 1
 321 #if _POSIX_C_SOURCE >= 199309L
 322                 clock_gettime(CLOCK_MONOTONIC, &now);
 323                 double elapsed = now.tv_sec - start.tv_sec +
 324                         1e-9 * (now.tv_nsec - start.tv_nsec);
 325 #else
 326                 gettimeofday(&now, NULL);
 327                 double elapsed = now.tv_sec - start.tv_sec +
 328                         1e-6 * (now.tv_usec - start.tv_usec);
 329 #endif
 330                 printf("%d frames in %.3f seconds = %.1f fps (%.1f ms/frame)\n",
 331                         frame, elapsed, frame / elapsed,
 332                         1e3 * elapsed / frame);
 333 #endif
 334         }
 335         return 0;
 336 }