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author | Guenter Bartsch <guenter@users.sourceforge.net> | 2001-07-10 21:50:31 +0000 |
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committer | Guenter Bartsch <guenter@users.sourceforge.net> | 2001-07-10 21:50:31 +0000 |
commit | d8b2a2e6ab69169bab5ca40b69bfa5dac893bd0e (patch) | |
tree | 6d2879e005ef8db84801c81e52450ee8736c6454 /src/libac3/rematrix.c | |
parent | 4cc9fd313df701f722a81ad4bb551155415ce5cc (diff) | |
download | xine-lib-d8b2a2e6ab69169bab5ca40b69bfa5dac893bd0e.tar.gz xine-lib-d8b2a2e6ab69169bab5ca40b69bfa5dac893bd0e.tar.bz2 |
latest libac3 from walken
CVS patchset: 265
CVS date: 2001/07/10 21:50:31
Diffstat (limited to 'src/libac3/rematrix.c')
-rw-r--r-- | src/libac3/rematrix.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/src/libac3/rematrix.c b/src/libac3/rematrix.c deleted file mode 100644 index 7098f0526..000000000 --- a/src/libac3/rematrix.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * rematrix.c - * - * Copyright (C) Aaron Holtzman - July 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. - * - * - */ - -#include <stdlib.h> -#include <stdio.h> -#include "ac3.h" -#include "ac3_internal.h" - - -#include "decode.h" -#include "rematrix.h" - -struct rematrix_band_s -{ - uint32_t start; - uint32_t end; -}; - -struct rematrix_band_s rematrix_band[] = { {13,24}, {25,36}, {37 ,60}, {61,252}}; - -static inline uint32_t min(uint32_t a,uint32_t b); - -static inline uint32_t -min(uint32_t a,uint32_t b) -{ - return (a < b ? a : b); -} - -/* This routine simply does stereo rematixing for the 2 channel - * stereo mode */ -void rematrix(audblk_t *audblk, stream_samples_t samples) -{ - uint32_t num_bands; - uint32_t start; - uint32_t end; - uint32_t i,j; - float left,right; - - if(!audblk->cplinu || audblk->cplbegf > 2) - num_bands = 4; - else if (audblk->cplbegf > 0) - num_bands = 3; - else - num_bands = 2; - - for(i=0;i < num_bands; i++) { - if(!audblk->rematflg[i]) - continue; - - start = rematrix_band[i].start; - end = min(rematrix_band[i].end ,12 * audblk->cplbegf + 36); - - for(j=start;j < end; j++) { - left = samples[0][j] + samples[1][j]; - right = samples[0][j] - samples[1][j]; - samples[0][j] = left; - samples[1][j] = right; - } - } -} |