Add function to compute ceil(log2(x)).
[FFMpeg-mirror/lagarith.git] / libavcodec / faanidct.h
blob4cf11892863510f7041550a6b847e06a8f49ad0e
1 /*
2 * Floating point AAN IDCT
3 * Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_FAANIDCT_H
23 #define AVCODEC_FAANIDCT_H
25 #include <stdint.h>
26 #include "dsputil.h"
28 void ff_faanidct(DCTELEM block[64]);
29 void ff_faanidct_add(uint8_t *dest, int line_size, DCTELEM block[64]);
30 void ff_faanidct_put(uint8_t *dest, int line_size, DCTELEM block[64]);
32 #endif /* AVCODEC_FAANIDCT_H */