From 741fb4b9e135cfb161a749db88713229038577bb Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:55:35 +0100 Subject: making act segmenter --- ffmpeg1/libavcodec/lagarithrac.c | 59 ---------------------------------------- 1 file changed, 59 deletions(-) delete mode 100644 ffmpeg1/libavcodec/lagarithrac.c (limited to 'ffmpeg1/libavcodec/lagarithrac.c') diff --git a/ffmpeg1/libavcodec/lagarithrac.c b/ffmpeg1/libavcodec/lagarithrac.c deleted file mode 100644 index 895acb0..0000000 --- a/ffmpeg1/libavcodec/lagarithrac.c +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Lagarith range decoder - * Copyright (c) 2009 Nathan Caldwell - * Copyright (c) 2009 David Conrad - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Lagarith range decoder - * @author Nathan Caldwell - * @author David Conrad - */ - -#include "get_bits.h" -#include "lagarithrac.h" - -void ff_lag_rac_init(lag_rac *l, GetBitContext *gb, int length) -{ - int i, j, left; - - /* According to reference decoder "1st byte is garbage", - * however, it gets skipped by the call to align_get_bits() - */ - align_get_bits(gb); - left = get_bits_left(gb) >> 3; - l->bytestream_start = - l->bytestream = gb->buffer + get_bits_count(gb) / 8; - l->bytestream_end = l->bytestream_start + left; - - l->range = 0x80; - l->low = *l->bytestream >> 1; - l->hash_shift = FFMAX((int)l->scale - 8, 0); - - for (i = j = 0; i < 256; i++) { - unsigned r = i << l->hash_shift; - while (l->prob[j + 1] <= r) - j++; - l->range_hash[i] = j; - } - - /* Add conversion factor to hash_shift so we don't have to in lag_get_rac. */ - l->hash_shift += 23; -} -- cgit v1.2.3