WINDOW_TYPE_EXT4  697 libavcodec/on2avc.c         case WINDOW_TYPE_EXT4:
WINDOW_TYPE_EXT4  807 libavcodec/on2avc.c     if (c->window_type >= WINDOW_TYPE_EXT4 && c->avctx->channels == 1) {
WINDOW_TYPE_EXT4  827 libavcodec/on2avc.c     if (c->window_type < WINDOW_TYPE_EXT4) {