Add fallbacks for systems without proper monotonic clocks (e.g. OS X).

[movit] / main.cpp

diff --git a/main.cpp b/main.cpp
index 569c67d6653704e43831c28fae8925b6ab8b73f3..93f8c0cb1823d45e5ae4b8a719d6daa5d38bd73f 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -34,6 +34,9 @@ float gamma_theta = 0.0f, gamma_rad = 0.0f, gamma_v = 0.5f;
 float gain_theta = 0.0f, gain_rad = 0.0f, gain_v = 0.25f;
 float saturation = 1.0f;
 
+float radius = 0.3f;
+float inner_radius = 0.3f;
+
 void update_hsv(Effect *lift_gamma_gain_effect, Effect *saturation_effect)
 {
        RGBTriplet lift(0.0f, 0.0f, 0.0f);
@@ -69,6 +72,10 @@ void mouse(int x, int y)
                read_colorwheel(xf, yf - 0.4f, &gain_rad, &gain_theta, &gain_v);
        } else if (yf >= 0.6f && yf < 0.62f && xf < 0.2f) {
                saturation = (xf / 0.2f) * 4.0f;
+       } else if (yf >= 0.65f && yf < 0.67f && xf < 0.2f) {
+               radius = (xf / 0.2f);
+       } else if (yf >= 0.70f && yf < 0.72f && xf < 0.2f) {
+               inner_radius = (xf / 0.2f);
        }
 }
 
@@ -85,7 +92,7 @@ unsigned char *load_image(const char *filename, unsigned *w, unsigned *h)
        SDL_LockSurface(img);
        unsigned char *src_pixels = (unsigned char *)img->pixels;
        unsigned char *dst_pixels = (unsigned char *)malloc(img->w * img->h * 3);
-       for (unsigned i = 0; i < img->w * img->h; ++i) {
+       for (int i = 0; i < img->w * img->h; ++i) {
                unsigned char r, g, b;
                unsigned int temp;
                unsigned int pixel = *(unsigned int *)(src_pixels + i * fmt->BytesPerPixel);
@@ -167,6 +174,7 @@ int main(int argc, char **argv)
        chain.add_input(inout_format);
        Effect *lift_gamma_gain_effect = chain.add_effect(EFFECT_LIFT_GAMMA_GAIN);
        Effect *saturation_effect = chain.add_effect(EFFECT_SATURATION);
+       Effect *vignette_effect = chain.add_effect(EFFECT_VIGNETTE);
        chain.add_output(inout_format);
        chain.finalize();
 
@@ -219,9 +227,14 @@ int main(int argc, char **argv)
 
        make_hsv_wheel_texture();
 
-       struct timespec start, now;
        int frame = 0, screenshot = 0;
+#if _POSIX_C_SOURCE >= 199309L
+       struct timespec start, now;
        clock_gettime(CLOCK_MONOTONIC, &start);
+#else
+       struct timeval start, now;
+       gettimeofday(&start, NULL);
+#endif
 
        while (!quit) {
                SDL_Event event;
@@ -242,6 +255,8 @@ int main(int argc, char **argv)
                ++frame;
 
                update_hsv(lift_gamma_gain_effect, saturation_effect);
+               vignette_effect->set_float("radius", radius);
+               vignette_effect->set_float("inner_radius", inner_radius);
                chain.render_to_screen(src_img);
                
                glReadPixels(0, 0, WIDTH, HEIGHT, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, BUFFER_OFFSET(0));
@@ -250,7 +265,9 @@ int main(int argc, char **argv)
                draw_hsv_wheel(0.0f, lift_rad, lift_theta, lift_v);
                draw_hsv_wheel(0.2f, gamma_rad, gamma_theta, gamma_v);
                draw_hsv_wheel(0.4f, gain_rad, gain_theta, gain_v);
-               draw_saturation_bar(0.6f, saturation);
+               draw_saturation_bar(0.6f, saturation / 4.0f);
+               draw_saturation_bar(0.65f, radius);
+               draw_saturation_bar(0.70f, inner_radius);
 
                SDL_GL_SwapBuffers();
                check_error();
@@ -268,9 +285,15 @@ int main(int argc, char **argv)
                check_error();
 
 #if 1
+#if _POSIX_C_SOURCE >= 199309L
                clock_gettime(CLOCK_MONOTONIC, &now);
                double elapsed = now.tv_sec - start.tv_sec +
                        1e-9 * (now.tv_nsec - start.tv_nsec);
+#else
+               gettimeofday(&now, NULL);
+               double elapsed = now.tv_sec - start.tv_sec +
+                       1e-6 * (now.tv_usec - start.tv_usec);
+#endif
                printf("%d frames in %.3f seconds = %.1f fps (%.1f ms/frame)\n",
                        frame, elapsed, frame / elapsed,
                        1e3 * elapsed / frame);