summaryrefslogtreecommitdiff
path: root/src/audio_out/resample.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/audio_out/resample.c')
-rw-r--r--src/audio_out/resample.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/src/audio_out/resample.c b/src/audio_out/resample.c
deleted file mode 100644
index 8a5419d24..000000000
--- a/src/audio_out/resample.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * Copyright (C) 2000 the xine project
- *
- * This file is part of xine, a unix video player.
- *
- * xine 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 of the License, or
- * (at your option) any later version.
- *
- * xine 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- *
- * $Id: resample.c,v 1.3 2001/07/22 11:22:00 ehasenle Exp $
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <inttypes.h>
-
-/* contributed by paul flinders */
-
-void audio_out_resample_mono(int16_t* input_samples, uint32_t in_samples,
- int16_t* output_samples, uint32_t out_samples)
-{
- int osample;
- /* 16+16 fixed point math */
- uint32_t isample = 0;
- uint32_t istep = (in_samples << 16)/out_samples;
-
-#ifdef VERBOSE
- printf ("Audio : resample %d samples to %d\n",
- in_samples, out_samples);
-#endif
-
- for (osample = 0; osample < out_samples - 1; osample++) {
- int s1;
- int s2;
- int16_t os;
- uint32_t t = isample&0xffff;
-
- /* don't "optimize" the (isample >> 16)*2 to (isample >> 15) */
- s1 = input_samples[(isample >> 16)];
- s2 = input_samples[(isample >> 16)+1];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[osample] = os;
-
- isample += istep;
- }
- output_samples[out_samples-1] = input_samples[in_samples-1];
-}
-
-void audio_out_resample_stereo(int16_t* input_samples, uint32_t in_samples,
- int16_t* output_samples, uint32_t out_samples)
-{
- int osample;
- /* 16+16 fixed point math */
- uint32_t isample = 0;
- uint32_t istep = (in_samples << 16)/out_samples;
-
-#ifdef VERBOSE
- printf ("Audio : resample %d samples to %d\n",
- in_samples, out_samples);
-#endif
-
- for (osample = 0; osample < out_samples - 1; osample++) {
- int s1;
- int s2;
- int16_t os;
- uint32_t t = isample&0xffff;
-
- /* don't "optimize" the (isample >> 16)*2 to (isample >> 15) */
- s1 = input_samples[(isample >> 16)*2];
- s2 = input_samples[(isample >> 16)*2+2];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[osample * 2] = os;
-
- s1 = input_samples[(isample >> 16)*2+1];
- s2 = input_samples[(isample >> 16)*2+3];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 2 )+1] = os;
- isample += istep;
- }
- output_samples[out_samples*2-2] = input_samples[in_samples*2-2];
- output_samples[out_samples*2-1] = input_samples[in_samples*2-1];
-}
-
-
-void audio_out_resample_4channel(int16_t* input_samples, uint32_t in_samples,
- int16_t* output_samples, uint32_t out_samples)
-{
- int osample;
- /* 16+16 fixed point math */
- uint32_t isample = 0;
- uint32_t istep = (in_samples << 16)/out_samples;
-
-#ifdef VERBOSE
- printf ("Audio : resample %d samples to %d\n",
- in_samples, out_samples);
-#endif
-
- for (osample = 0; osample < out_samples - 1; osample++) {
- int s1;
- int s2;
- int16_t os;
- uint32_t t = isample&0xffff;
-
- /* don't "optimize" the (isample >> 16)*2 to (isample >> 15) */
- s1 = input_samples[(isample >> 16)*4];
- s2 = input_samples[(isample >> 16)*4+4];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[osample * 4] = os;
-
- s1 = input_samples[(isample >> 16)*4+1];
- s2 = input_samples[(isample >> 16)*4+5];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 4 )+1] = os;
-
- s1 = input_samples[(isample >> 16)*4+2];
- s2 = input_samples[(isample >> 16)*4+6];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 4 )+2] = os;
-
- s1 = input_samples[(isample >> 16)*4+3];
- s2 = input_samples[(isample >> 16)*4+7];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 4 )+3] = os;
-
- isample += istep;
- }
- output_samples[out_samples*4-4] = input_samples[in_samples*4-4];
- output_samples[out_samples*4-3] = input_samples[in_samples*4-3];
- output_samples[out_samples*4-2] = input_samples[in_samples*4-2];
- output_samples[out_samples*4-1] = input_samples[in_samples*4-1];
-
-}
-
-
-void audio_out_resample_5channel(int16_t* input_samples, uint32_t in_samples,
- int16_t* output_samples, uint32_t out_samples)
-{
- int osample;
- /* 16+16 fixed point math */
- uint32_t isample = 0;
- uint32_t istep = (in_samples << 16)/out_samples;
-
-#ifdef VERBOSE
- printf ("Audio : resample %d samples to %d\n",
- in_samples, out_samples);
-#endif
-
- for (osample = 0; osample < out_samples - 1; osample++) {
- int s1;
- int s2;
- int16_t os;
- uint32_t t = isample&0xffff;
-
- /* don't "optimize" the (isample >> 16)*2 to (isample >> 15) */
- s1 = input_samples[(isample >> 16)*5];
- s2 = input_samples[(isample >> 16)*5+5];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[osample * 5] = os;
-
- s1 = input_samples[(isample >> 16)*5+1];
- s2 = input_samples[(isample >> 16)*5+6];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 5 )+1] = os;
-
- s1 = input_samples[(isample >> 16)*5+2];
- s2 = input_samples[(isample >> 16)*5+7];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 5 )+2] = os;
-
- s1 = input_samples[(isample >> 16)*5+3];
- s2 = input_samples[(isample >> 16)*5+8];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 5 )+3] = os;
-
- s1 = input_samples[(isample >> 16)*5+4];
- s2 = input_samples[(isample >> 16)*5+9];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 5 )+4] = os;
-
- isample += istep;
- }
-
- output_samples[out_samples*5-5] = input_samples[in_samples*5-5];
- output_samples[out_samples*5-4] = input_samples[in_samples*5-4];
- output_samples[out_samples*5-3] = input_samples[in_samples*5-3];
- output_samples[out_samples*5-2] = input_samples[in_samples*5-2];
- output_samples[out_samples*5-1] = input_samples[in_samples*5-1];
-}
-
-
-void audio_out_resample_6channel(int16_t* input_samples, uint32_t in_samples,
- int16_t* output_samples, uint32_t out_samples)
-{
- int osample;
- /* 16+16 fixed point math */
- uint32_t isample = 0;
- uint32_t istep = (in_samples << 16)/out_samples;
-
-#ifdef VERBOSE
- printf ("Audio : resample %d samples to %d\n",
- in_samples, out_samples);
-#endif
-
- for (osample = 0; osample < out_samples - 1; osample++) {
- int s1;
- int s2;
- int16_t os;
- uint32_t t = isample&0xffff;
-
- /* don't "optimize" the (isample >> 16)*2 to (isample >> 15) */
- s1 = input_samples[(isample >> 16)*6];
- s2 = input_samples[(isample >> 16)*6+6];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[osample * 6] = os;
-
- s1 = input_samples[(isample >> 16)*6+1];
- s2 = input_samples[(isample >> 16)*6+7];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 6 )+1] = os;
-
- s1 = input_samples[(isample >> 16)*6+2];
- s2 = input_samples[(isample >> 16)*6+8];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 6 )+2] = os;
-
- s1 = input_samples[(isample >> 16)*6+3];
- s2 = input_samples[(isample >> 16)*6+9];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 6 )+3] = os;
-
- s1 = input_samples[(isample >> 16)*6+4];
- s2 = input_samples[(isample >> 16)*6+10];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 6 )+4] = os;
-
- s1 = input_samples[(isample >> 16)*6+5];
- s2 = input_samples[(isample >> 16)*6+11];
-
- os = (s1 * (0x10000-t)+ s2 * t) >> 16;
- output_samples[(osample * 6 )+5] = os;
-
- isample += istep;
- }
-
- output_samples[out_samples*6-6] = input_samples[in_samples*6-6];
- output_samples[out_samples*6-5] = input_samples[in_samples*6-5];
- output_samples[out_samples*6-4] = input_samples[in_samples*6-4];
- output_samples[out_samples*6-3] = input_samples[in_samples*6-3];
- output_samples[out_samples*6-2] = input_samples[in_samples*6-2];
- output_samples[out_samples*6-1] = input_samples[in_samples*6-1];
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 17:30:10 +0000