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-rw-r--r--ac3dec/downmix_c.c161
1 files changed, 0 insertions, 161 deletions
diff --git a/ac3dec/downmix_c.c b/ac3dec/downmix_c.c
deleted file mode 100644
index 875d785e..00000000
--- a/ac3dec/downmix_c.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * downmix_c.c
- *
- * 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.
- *
- *
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include "ac3.h"
-#include "ac3_internal.h"
-
-#include "debug.h"
-#include "downmix.h"
-#include "downmix_c.h"
-
-
-void downmix_3f_2r_to_2ch_c (float *samples, dm_par_t *dm_par)
-{
- int i;
- float *left, *right, *center, *left_sur, *right_sur;
- float left_tmp, right_tmp;
-
- left = samples;
- right = samples + 256 * 2;
- center = samples + 256;
- left_sur = samples + 256 * 3;
- right_sur = samples + 256 * 4;
-
- for (i=0; i < 256; i++) {
-#if defined DOLBY_SURROUND
- left_tmp = dm_par->unit * *left + dm_par->clev * *center - dm_par->slev * (*left_sur + *right_sur);
- right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * (*left_sur++ + *right_sur++);
-#else
- left_tmp = dm_par->unit * *left + dm_par->clev * *center + dm_par->slev * *left_sur++;
- right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * *right_sur++;
-#endif
- *left++ = left_tmp;
- *center++ = right_tmp;
-
- }
-}
-
-
-void downmix_2f_2r_to_2ch_c (float *samples, dm_par_t *dm_par)
-{
- int i;
- float *left, *right, *left_sur, *right_sur;
- float left_tmp, right_tmp;
-
- left = &samples[0];
- right = &samples[256];
- left_sur = &samples[512];
- right_sur = &samples[768];
-
- for (i = 0; i < 256; i++) {
- left_tmp = dm_par->unit * *left + dm_par->slev * *left_sur++;
- right_tmp= dm_par->unit * *right + dm_par->slev * *right_sur++;
- *left++ = left_tmp;
- *right++ = right_tmp;
- }
-}
-
-
-void downmix_3f_1r_to_2ch_c (float *samples, dm_par_t *dm_par)
-{
- int i;
- float *left, *right, *center, *right_sur;
- float left_tmp, right_tmp;
-
- left = &samples[0];
- right = &samples[512];
- center = &samples[256];
- right_sur = &samples[768];
-
- for (i = 0; i < 256; i++) {
- left_tmp = dm_par->unit * *left + dm_par->clev * *center - dm_par->slev * *right_sur;
- right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * *right_sur++;
- *left++ = left_tmp;
- *center++ = right_tmp;
- }
-}
-
-
-void downmix_2f_1r_to_2ch_c (float *samples, dm_par_t *dm_par)
-{
- int i;
- float *left, *right, *right_sur;
- float left_tmp, right_tmp;
-
- left = &samples[0];
- right = &samples[256];
- right_sur = &samples[512];
-
- for (i = 0; i < 256; i++) {
- left_tmp = dm_par->unit * *left - dm_par->slev * *right_sur;
- right_tmp= dm_par->unit * *right + dm_par->slev * *right_sur++;
- *left++ = left_tmp;
- *right++ = right_tmp;
- }
-}
-
-
-void downmix_3f_0r_to_2ch_c (float *samples, dm_par_t *dm_par)
-{
- int i;
- float *left, *right, *center;
- float left_tmp, right_tmp;
-
- left = &samples[0];
- center = &samples[256];
- right = &samples[512];
-
- for (i = 0; i < 256; i++) {
- left_tmp = dm_par->unit * *left + dm_par->clev * *center;
- right_tmp= dm_par->unit * *right++ + dm_par->clev * *center;
- *left++ = left_tmp;
- *center++ = right_tmp;
- }
-}
-
-
-void stream_sample_2ch_to_s16_c (int16_t *s16_samples, float *left, float *right)
-{
- int i;
-
- for (i=0; i < 256; i++) {
- *s16_samples++ = (int16_t) *left++;
- *s16_samples++ = (int16_t) *right++;
- }
-}
-
-
-void stream_sample_1ch_to_s16_c (int16_t *s16_samples, float *center)
-{
- int i;
- float tmp;
-
- for (i=0; i < 256; i++) {
- *s16_samples++ = tmp = (int16_t) (0.7071f * *center++);
- *s16_samples++ = tmp;
- }
-}