From 25608328af26a9c5bcbb7136320f49f8e94d4c26 Mon Sep 17 00:00:00 2001 From: Thilo Borgmann Date: Sat, 13 Feb 2010 18:24:13 +0000 Subject: Support arithmetic decoding in ALS. Originally committed as revision 21799 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/bgmc.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 libavcodec/bgmc.h (limited to 'libavcodec/bgmc.h') diff --git a/libavcodec/bgmc.h b/libavcodec/bgmc.h new file mode 100644 index 0000000000..bae4f3b9a0 --- /dev/null +++ b/libavcodec/bgmc.h @@ -0,0 +1,56 @@ +/* + * Block Gilbert-Moore decoder + * Copyright (c) 2010 Thilo Borgmann + * + * 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 libavcodec/bgmc.h + * Block Gilbert-Moore decoder header + * @author Thilo Borgmann + */ + + +#ifndef AVCODEC_BGMC_H +#define AVCODEC_BGMC_H + + +#include "avcodec.h" +#include "get_bits.h" + + +int ff_bgmc_init(AVCodecContext *avctx, uint8_t **cf_lut, unsigned int **cf_lut_status); + + +void ff_bgmc_end(uint8_t **cf_lut, unsigned int **cf_lut_status); + + +void ff_bgmc_decode_init(GetBitContext *gb, + unsigned int *h, unsigned int *l, unsigned int *v); + + +void ff_bgmc_decode_end(GetBitContext *gb); + + +void ff_bgmc_decode(GetBitContext *gb, unsigned int num, int32_t *dst, + unsigned int delta, unsigned int sx, + unsigned int *h, unsigned int *l, unsigned int *v, + uint8_t *cf_lut, unsigned int *cf_lut_status); + + +#endif /* AVCODEC_BGMC_H */ -- cgit v1.2.3