zbar_video_t *zbar_video_create () { zbar_video_t *vdo = calloc(1, sizeof(zbar_video_t)); int i; if(!vdo) return(NULL); err_init(&vdo->err, ZBAR_MOD_VIDEO); vdo->fd = -1; (void)_zbar_mutex_init(&vdo->qlock); /* pre-allocate images */ vdo->num_images = ZBAR_VIDEO_IMAGES_MAX; vdo->images = calloc(ZBAR_VIDEO_IMAGES_MAX, sizeof(zbar_image_t*)); if(!vdo->images) { zbar_video_destroy(vdo); return(NULL); } for(i = 0; i < ZBAR_VIDEO_IMAGES_MAX; i++) { zbar_image_t *img = vdo->images[i] = zbar_image_create(); if(!img) { zbar_video_destroy(vdo); return(NULL); } img->refcnt = 0; img->cleanup = _zbar_video_recycle_image; img->srcidx = i; img->src = vdo; } return(vdo); }
zbar_window_t *zbar_window_create (void) { zbar_window_t *w = calloc(1, sizeof(zbar_window_t)); if(!w) return(NULL); err_init(&w->err, ZBAR_MOD_WINDOW); w->overlay = 1; (void)_zbar_mutex_init(&w->imglock); return(w); }
zbar_processor_t *zbar_processor_create (int threaded) { zbar_processor_t *proc = calloc(1, sizeof(zbar_processor_t)); if(!proc) return(NULL); err_init(&proc->err, ZBAR_MOD_PROCESSOR); proc->scanner = zbar_image_scanner_create(); if(!proc->scanner) { free(proc); return(NULL); } proc->threaded = !_zbar_mutex_init(&proc->mutex) && threaded; _zbar_processor_init(proc); return(proc); }