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-rwxr-xr-xcodecs/mp3/src/csbt.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/codecs/mp3/src/csbt.c b/codecs/mp3/src/csbt.c
deleted file mode 100755
index bb9079526..000000000
--- a/codecs/mp3/src/csbt.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*____________________________________________________________________________
-
- FreeAmp - The Free MP3 Player
-
- MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology
- Corp. http://www.xingtech.com
-
- Portions Copyright (C) 1998 EMusic.com
-
- This program 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.
-
- This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-____________________________________________________________________________*/
-
-/**** csbt.c ***************************************************
-
-MPEG audio decoder, dct and window
-portable C
-
-1/7/96 mod for Layer III
-
-******************************************************************/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <float.h>
-#include <math.h>
-#include "L3.h"
-#include "mhead.h"
-
-void fdct32(MPEG *m, float *, float *);
-void fdct32_dual(MPEG *m, float *, float *);
-void fdct32_dual_mono(MPEG *m, float *, float *);
-void fdct16(MPEG *m, float *, float *);
-void fdct16_dual(MPEG *m, float *, float *);
-void fdct16_dual_mono(MPEG *m, float *, float *);
-void fdct8(MPEG *m, float *, float *);
-void fdct8_dual(MPEG *m, float *, float *);
-void fdct8_dual_mono(MPEG *m, float *, float *);
-
-void window(float *, int , short *pcm);
-void window_dual(MPEG *m, float *, int , short *pcm);
-void window16(MPEG *m, float *, int , short *pcm);
-void window16_dual(MPEG *m, float *, int , short *pcm);
-void window8(MPEG *m, float *, int , short *pcm);
-void window8_dual(MPEG *m, float *, int , short *pcm);
-float *dct_coef_addr(MPEG *m);
-
-/*-------------------------------------------------------------------------*/
-/* circular window buffers */
-
-/*======================================================================*/
-static void gencoef(MPEG *m) /* gen coef for N=32 (31 coefs) */
-{
- int p, n, i, k;
- double t, pi;
- float *coef32;
-
- coef32 = dct_coef_addr(m);
-
- pi = 4.0 * atan(1.0);
- n = 16;
- k = 0;
- for (i = 0; i < 5; i++, n = n / 2)
- {
-
- for (p = 0; p < n; p++, k++)
- {
- t = (pi / (4 * n)) * (2 * p + 1);
- coef32[k] = (float) (0.50 / cos(t));
- }
- }
-}
-/*------------------------------------------------------------*/
-void sbt_init(MPEG *m)
-{
- int i;
-
- if (m->csbt.first_pass)
- {
- gencoef(m);
- m->csbt.first_pass = 0;
- }
-
-/* clear window m->csbt.vbuf */
- for (i = 0; i < 512; i++)
- {
- m->csbt.vbuf[i] = 0.0F;
- m->csbt.vbuf2[i] = 0.0F;
- }
- m->csbt.vb2_ptr = m->csbt.vb_ptr = 0;
-
-}
-/*============================================================*/
-/*============================================================*/
-/*============================================================*/
-void sbt_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct32(m, sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window(m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
- pcm += 32;
- }
-
-}
-/*------------------------------------------------------------*/
-void sbt_dual(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct32_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- fdct32_dual(m,sample + 1, m->csbt.vbuf2 + m->csbt.vb_ptr);
- window_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- window_dual(m,m->csbt.vbuf2, m->csbt.vb_ptr, pcm + 1);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
- pcm += 64;
- }
-
-
-}
-/*------------------------------------------------------------*/
-/* convert dual to mono */
-void sbt_dual_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct32_dual_mono(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window(m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
- pcm += 32;
- }
-
-}
-/*------------------------------------------------------------*/
-/* convert dual to left */
-void sbt_dual_left(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct32_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window(m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
- pcm += 32;
- }
-}
-/*------------------------------------------------------------*/
-/* convert dual to right */
-void sbt_dual_right(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- sample++; /* point to right chan */
- for (i = 0; i < n; i++)
- {
- fdct32_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window(m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511;
- pcm += 32;
- }
-}
-/*------------------------------------------------------------*/
-/*---------------- 16 pt sbt's -------------------------------*/
-/*------------------------------------------------------------*/
-void sbt16_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
- pcm += 16;
- }
-
-
-}
-/*------------------------------------------------------------*/
-void sbt16_dual(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct16_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- fdct16_dual(m,sample + 1, m->csbt.vbuf2 + m->csbt.vb_ptr);
- window16_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- window16_dual(m,m->csbt.vbuf2, m->csbt.vb_ptr, pcm + 1);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
- pcm += 32;
- }
-}
-/*------------------------------------------------------------*/
-void sbt16_dual_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct16_dual_mono(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
- pcm += 16;
- }
-}
-/*------------------------------------------------------------*/
-void sbt16_dual_left(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct16_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
- pcm += 16;
- }
-}
-/*------------------------------------------------------------*/
-void sbt16_dual_right(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- sample++;
- for (i = 0; i < n; i++)
- {
- fdct16_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255;
- pcm += 16;
- }
-}
-/*------------------------------------------------------------*/
-/*---------------- 8 pt sbt's -------------------------------*/
-/*------------------------------------------------------------*/
-void sbt8_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
- pcm += 8;
- }
-
-}
-/*------------------------------------------------------------*/
-void sbt8_dual(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct8_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- fdct8_dual(m,sample + 1, m->csbt.vbuf2 + m->csbt.vb_ptr);
- window8_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- window8_dual(m,m->csbt.vbuf2, m->csbt.vb_ptr, pcm + 1);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
- pcm += 16;
- }
-}
-/*------------------------------------------------------------*/
-void sbt8_dual_mono(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct8_dual_mono(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
- pcm += 8;
- }
-}
-/*------------------------------------------------------------*/
-void sbt8_dual_left(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- for (i = 0; i < n; i++)
- {
- fdct8_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
- pcm += 8;
- }
-}
-/*------------------------------------------------------------*/
-void sbt8_dual_right(MPEG *m, float *sample, short *pcm, int n)
-{
- int i;
-
- sample++;
- for (i = 0; i < n; i++)
- {
- fdct8_dual(m,sample, m->csbt.vbuf + m->csbt.vb_ptr);
- window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm);
- sample += 64;
- m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127;
- pcm += 8;
- }
-}
-/*------------------------------------------------------------*/
-/*------------------------------------------------------------*/
-#include "csbtb.c" /* 8 bit output */
-#include "csbtL3.c" /* Layer III */
-/*------------------------------------------------------------*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 04:44:56 +0000