int main(int argc, char** argv)
{
int ret = EXIT_SUCCESS;
/* Initialize param struct to zero */
memset(&P, 0, sizeof(P));
if (!parse_input(argc, argv)) {
return EXIT_FAILURE;
}
/* Initialize parameters corresponding to YUV-format */
setup_param();
if (!sdl_init()) {
return EXIT_FAILURE;
}
if (!open_input()) {
return EXIT_FAILURE;
}
if (!allocate_memory()) {
ret = EXIT_FAILURE;
goto cleanup;
}
/* Lets do some basic consistency check on input */
check_input();
/* send event to display first frame */
event.type = SDL_KEYDOWN;
event.key.keysym.sym = SDLK_RIGHT;
SDL_PushEvent(&event);
/* while true */
event_loop();
cleanup:
destroy_message_queue();
SDL_FreeYUVOverlay(my_overlay);
free(P.raw);
free(P.y_data);
free(P.cb_data);
free(P.cr_data);
if (fd) {
fclose(fd);
}
if (P.fd2) {
fclose(P.fd2);
}
return ret;
}
int main(int argc, char** argv) {
my_msg the_msg;
int retval;
if (!strcmp(argv[1], "-d")) {
destroy_message_queue(KEY);
} else if (!strcmp(argv[1], "-c")) {
create_message_queue(KEY);
} else if (!strcmp(argv[1], "-rw")) {
retval = receive_message(KEY, &the_msg, sizeof(my_msg),true);
printf("Received message: %s\n", the_msg.msg_text);
} else if (!strcmp(argv[1], "-r")) {
retval = receive_message(KEY, &the_msg, sizeof(my_msg),false);
if (!retval) printf("Received message: %s\n", the_msg.msg_text);
} else if (!strcmp(argv[1], "-s")) {
the_msg.msg_type = 1;
strcpy(the_msg.msg_text, argv[2]);
send_message(KEY, &the_msg, sizeof(my_msg),true);
}
return 0;
}
/* loop inspired by yay
* http://freecode.com/projects/yay
*/
Uint32 event_loop(void)
{
char caption[256];
Uint16 quit = 0;
Uint32 frame = 0;
int play_yuv = 0;
unsigned int start_ticks = 0;
while (!quit) {
set_caption(caption, frame, 256);
SDL_WM_SetCaption(caption, NULL);
/* wait for SDL event */
if (P.mode == NONE || P.mode == MASTER) {
SDL_WaitEvent(&event);
} else if (P.mode == SLAVE) {
if (!event_dispatcher()) {
SDL_WaitEvent(&event);
}
}
switch (event.type)
{
case SDL_KEYDOWN:
switch (event.key.keysym.sym)
{
case SDLK_SPACE:
play_yuv = 1; /* play it, sam! */
while (play_yuv) {
start_ticks = SDL_GetTicks();
set_caption(caption, frame, 256);
SDL_WM_SetCaption( caption, NULL );
/* check for next frame existing */
if (read_frame()) {
draw_frame();
/* insert delay for real time viewing */
if (SDL_GetTicks() - start_ticks < 40)
SDL_Delay(40 - (SDL_GetTicks() - start_ticks));
frame++;
send_message(NEXT);
} else {
play_yuv = 0;
}
/* check for any key event */
if (SDL_PollEvent(&event)) {
if (event.type == SDL_KEYDOWN) {
/* stop playing */
play_yuv = 0;
}
}
}
break;
case SDLK_RIGHT: /* next frame */
/* check for next frame existing */
if (read_frame()) {
draw_frame();
frame++;
send_message(NEXT);
}
break;
case SDLK_LEFT: /* previous frame */
if (frame > 1) {
frame--;
fseek(fd, ((frame-1) * P.frame_size), SEEK_SET);
if (P.diff) {
fseek(P.fd2, ((frame-1) * P.frame_size), SEEK_SET);
}
read_frame();
draw_frame();
send_message(PREV);
}
break;
case SDLK_UP: /* zoom in */
P.zoom++;
set_zoom_rect();
screen = SDL_SetVideoMode(P.zoom_width,
P.zoom_height,
P.bpp, P.vflags);
video_rect.w = P.zoom_width;
video_rect.h = P.zoom_height;
SDL_DisplayYUVOverlay(my_overlay, &video_rect);
send_message(ZOOM_IN);
break;
case SDLK_DOWN: /* zoom out */
P.zoom--;
set_zoom_rect();
screen = SDL_SetVideoMode(P.zoom_width,
P.zoom_height,
P.bpp, P.vflags);
video_rect.w = P.zoom_width;
video_rect.h = P.zoom_height;
SDL_DisplayYUVOverlay(my_overlay, &video_rect);
send_message(ZOOM_OUT);
break;
case SDLK_r: /* rewind */
if (frame > 1) {
frame = 1;
fseek(fd, 0, SEEK_SET);
if (P.diff) {
fseek(P.fd2, 0, SEEK_SET);
}
read_frame();
draw_frame();
send_message(REW);
}
break;
case SDLK_g: /* display grid */
P.grid = ~P.grid;
if (P.zoom < 1)
P.grid = 0;
draw_frame();
break;
case SDLK_m: /* show mb-data on stdout */
P.mb = ~P.mb;
if (P.zoom < 1)
P.mb = 0;
draw_frame();
break;
case SDLK_F5: /* Luma data only */
P.y_only = ~P.y_only;
P.cb_only = 0;
P.cr_only = 0;
draw_frame();
send_message(Y_ONLY);
break;
case SDLK_F6: /* Cb data only */
P.cb_only = ~P.cb_only;
P.y_only = 0;
P.cr_only = 0;
draw_frame();
send_message(CB_ONLY);
break;
case SDLK_F7: /* Cr data only */
P.cr_only = ~P.cr_only;
P.y_only = 0;
P.cb_only = 0;
send_message(CR_ONLY);
draw_frame();
break;
case SDLK_F8: /* display all color planes */
P.y_only = 0;
P.cb_only = 0;
P.cr_only = 0;
draw_frame();
send_message(ALL_PLANES);
break;
case SDLK_h: /* histogram */
P.hist = ~P.hist;
draw_frame();
break;
case SDLK_F1: /* MASTER-mode */
if (create_message_queue()) {
P.mode = MASTER;
}
break;
case SDLK_F2: /* SLAVE-mode */
if (P.mode == MASTER) {
destroy_message_queue();
}
if (connect_message_queue()) {
P.mode = SLAVE;
}
break;
case SDLK_F3: /* NONE-mode */
destroy_message_queue();
P.mode = NONE;
break;
case SDLK_q: /* quit */
quit = 1;
send_message(QUIT);
break;
default:
break;
} /* switch key */
break;
case SDL_QUIT:
quit = 1;
break;
case SDL_VIDEOEXPOSE:
SDL_DisplayYUVOverlay(my_overlay, &video_rect);
break;
case SDL_MOUSEBUTTONDOWN:
/* If the left mouse button was pressed */
if (event.button.button == SDL_BUTTON_LEFT ) {
show_mb(event.button.x, event.button.y);
}
break;
default:
break;
} /* switch event type */
} /* while */
return quit;
}
