/**
* "Got frame" callback.
* Fills the texture with the given frame, and displays it on the window.
*/
int video_display_frame(uint8_t* frame, int width, int height, int size) {
//if we get a NULL frame, stop displaying.
if(frame == NULL) {
video_display_clean();
return 0;
}
//first time called ? Initialize things.
if(!initialized) {
if(video_display_init_size(width, height) < 0) {
fprintf(stderr, "Display : Failed initialization.\n");
return -1;
}
if(video_display_set_size(width, height) < 0)
return -1;
initialized = 1;
}
//check whether the size of the video has changed
if(width != current_width || height != current_height)
if(video_display_set_size(width, height) < 0)
return -1;
//check whether there's new stuff in the input com buffer
double new_update = jakopter_com_get_timestamp(com_in);
if(new_update > prev_update) {
update_infos();
prev_update = new_update;
}
//update the texture with our new frame
if(SDL_UpdateTexture(frameTex, NULL, frame, width) < 0) {
fprintf(stderr, "Display : failed to update frame texture : %s\n", SDL_GetError());
return -1;
}
//clear the renderer, then update it so that we get the new frame displayed.
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, frameTex, NULL, NULL);
//SDL_RenderFillRect(renderer, &rectangle);
//draw all overlay elements, when they exist
int i=0;
for(i=0 ; i<VIDEO_NB_NAV_INFOS ; i++)
if(graphs[i].tex != NULL)
SDL_RenderCopy(renderer, graphs[i].tex, NULL, &graphs[i].pos);
draw_attitude_indic();
draw_compass();
SDL_RenderPresent(renderer);
return 0;
}
int video_display_process(uint8_t* frame, int width, int height, int size) {
//if we get a NULL frame, stop displaying.
if(frame == NULL) {
video_display_destroy();
return 0;
}
//first time called ? Initialize things.
if(!initialized) {
if(video_display_init_size(width, height) < 0) {
fprintf(stderr, "[~][Display] Failed initialization.\n");
return -1;
}
if(video_display_set_size(width, height) < 0)
return -1;
initialized = 1;
}
//check whether the size of the video has changed
if (width != current_width || height != current_height)
if (video_display_set_size(width, height) < 0)
return -1;
//check whether there's new stuff in the input com buffer
double new_update = jakopter_com_get_timestamp(com_in);
if (new_update > prev_update) {
update_infos();
if (want_screenshot) {
take_screenshot(frame, size);
want_screenshot = 0;
jakopter_com_write_int(com_in, 24, 0);
}
prev_update = new_update;
}
pthread_mutex_lock(&mutex_process);
if (current_process != NULL) {
current_process(frame, width, height, size);
}
pthread_mutex_unlock(&mutex_process);
unload_element();
if (load_element() < 0)
fprintf(stderr, "Couldn't load graphic element\n");
// update the texture with our new frame
if (SDL_UpdateTexture(frameTex, NULL, frame, width) < 0) {
fprintf(stderr, "[~][Display] Failed to update frame texture : %s\n", SDL_GetError());
return -1;
}
//clear the renderer, then update it so that we get the new frame displayed.
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, frameTex, NULL, NULL);
//SDL_RenderFillRect(renderer, &rectangle);
//draw all overlay elements, when they exist
int i = 0;
for (i = 0 ; i < VIDEO_NB_NAV_INFOS ; i++)
if (graphs[i].tex != NULL)
SDL_RenderCopy(renderer, graphs[i].tex, NULL, &graphs[i].pos);
pthread_mutex_lock(&mutex_graphics_list);
struct graphics_list *current = icon_registry;
while (current != NULL) {
if (current->graphic != NULL && current->graphic->tex != NULL){
int ret = SDL_RenderCopy(renderer, current->graphic->tex, NULL, ¤t->graphic->pos);
if (ret < 0)
fprintf(stderr, "[~][display] RenderCopy() failed: %s\n", SDL_GetError());
}
current = current->next;
}
pthread_mutex_unlock(&mutex_graphics_list);
draw_attitude_indic();
draw_compass();
SDL_RenderPresent(renderer);
return 0;
}
