LZW_PREFIX_FREE   132 libavcodec/lzwenc.c     while (s->tab[h].hash_prefix != LZW_PREFIX_FREE) {
LZW_PREFIX_FREE   172 libavcodec/lzwenc.c         s->tab[i].hash_prefix = LZW_PREFIX_FREE;
LZW_PREFIX_FREE   241 libavcodec/lzwenc.c         if (s->tab[code].hash_prefix == LZW_PREFIX_FREE) {