diff options
Diffstat (limited to 'ac3dec/dither.h')
-rw-r--r-- | ac3dec/dither.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/ac3dec/dither.h b/ac3dec/dither.h deleted file mode 100644 index abb9f51..0000000 --- a/ac3dec/dither.h +++ /dev/null @@ -1,37 +0,0 @@ -/* - * dither.h - * - * Copyright (C) Aaron Holtzman - May 1999 - * - * This file is part of ac3dec, a free Dolby AC-3 stream decoder. - * - * ac3dec is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * ac3dec is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU Make; see the file COPYING. If not, write to - * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - - -extern uint16_t lfsr_state; -extern const uint16_t dither_lut[256]; - -static inline uint16_t dither_gen(void) -{ - int16_t state; - - state = dither_lut[lfsr_state >> 8] ^ (lfsr_state << 8); - - lfsr_state = (uint16_t) state; - - return ((state * (int32_t) (0.707106 * 256.0))>>8); -} |