scrcpy/app/src/fps_counter.c

63 lines
1.5 KiB
C
Raw Normal View History

#include "fps_counter.h"
#include <SDL2/SDL_timer.h>
#include "log.h"
void fps_counter_init(struct fps_counter *counter) {
counter->started = SDL_FALSE;
// no need to initialize the other fields, they are meaningful only when
// started is true
}
void fps_counter_start(struct fps_counter *counter) {
counter->started = SDL_TRUE;
counter->slice_start = SDL_GetTicks();
counter->nr_rendered = 0;
#ifdef SKIP_FRAMES
counter->nr_skipped = 0;
#endif
}
void fps_counter_stop(struct fps_counter *counter) {
counter->started = SDL_FALSE;
}
static void display_fps(struct fps_counter *counter) {
#ifdef SKIP_FRAMES
if (counter->nr_skipped) {
LOGI("%d fps (+%d frames skipped)", counter->nr_rendered, counter->nr_skipped);
} else {
#endif
LOGI("%d fps", counter->nr_rendered);
#ifdef SKIP_FRAMES
}
#endif
}
static void check_expired(struct fps_counter *counter) {
Uint32 now = SDL_GetTicks();
if (now - counter->slice_start >= 1000) {
display_fps(counter);
// add a multiple of one second
Uint32 elapsed_slices = (now - counter->slice_start) / 1000;
counter->slice_start += 1000 * elapsed_slices;
counter->nr_rendered = 0;
#ifdef SKIP_FRAMES
counter->nr_skipped = 0;
#endif
}
}
void fps_counter_add_rendered_frame(struct fps_counter *counter) {
check_expired(counter);
++counter->nr_rendered;
}
#ifdef SKIP_FRAMES
void fps_counter_add_skipped_frame(struct fps_counter *counter) {
check_expired(counter);
++counter->nr_skipped;
}
#endif