Remove really broke MP3 stuff in favor of G.726 in the near future

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@1689 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 0 insertions, 321 deletions

diff --git a/codecs/mp3/src/mhead.c b/codecs/mp3/src/mhead.c
deleted file mode 100755
index d368f095f..000000000
--- a/codecs/mp3/src/mhead.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*____________________________________________________________________________
-	
-	FreeAmp - The Free MP3 Player
-
-        MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology
-        Corp.  http://www.xingtech.com
-
-	Portions Copyright (C) 1998-1999 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.
-	
-	$Id$
-____________________________________________________________________________*/
-
-/*------------ mhead.c ----------------------------------------------
-  mpeg audio
-  extract info from mpeg header
-  portable version (adapted from c:\eco\mhead.c
-
-  add Layer III
-
-  mods 6/18/97 re mux restart, 32 bit ints
-
-  mod 5/7/98 parse mpeg 2.5
-
----------------------------------------------------------------------*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <float.h>
-#include <math.h>
-#include "L3.h"
-#include "mhead.h"		/* mpeg header structure */
-
-static int mp_br_table[2][16] =
-{{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0},
- {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 0}};
-static int mp_sr20_table[2][4] =
-{{441, 480, 320, -999}, {882, 960, 640, -999}};
-
-static int mp_br_tableL1[2][16] =
-{{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0},/* mpeg2 */
- {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 0}};
-
-static int mp_br_tableL3[2][16] =
-{{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 0},      /* mpeg 2 */
- {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0}};
-
-
-
-static int find_sync(unsigned char *buf, int n);
-static int sync_scan(unsigned char *buf, int n, int i0);
-static int sync_test(unsigned char *buf, int n, int isync, int padbytes);
-
-// jdw
-extern unsigned int g_jdw_additional;
-
-/*--------------------------------------------------------------*/
-int head_info(unsigned char *buf, unsigned int n, MPEG_HEAD * h)
-{
-   int framebytes;
-   int mpeg25_flag;
-  
-   if (n > 10000)
-      n = 10000;		/* limit scan for free format */
-
-
-
-   h->sync = 0;
-   //if ((buf[0] == 0xFF) && ((buf[1] & 0xF0) == 0xF0))
-   if ((buf[0] == 0xFF) && ((buf[0+1] & 0xF0) == 0xF0))
-   {
-      mpeg25_flag = 0;		// mpeg 1 & 2
-
-   }
-   else if ((buf[0] == 0xFF) && ((buf[0+1] & 0xF0) == 0xE0))
-   {
-      mpeg25_flag = 1;		// mpeg 2.5
-
-   }
-   else
-      return 0;			// sync fail
-
-   h->sync = 1;
-   if (mpeg25_flag)
-      h->sync = 2;		//low bit clear signals mpeg25 (as in 0xFFE)
-
-   h->id = (buf[0+1] & 0x08) >> 3;
-   h->option = (buf[0+1] & 0x06) >> 1;
-   h->prot = (buf[0+1] & 0x01);
-
-   h->br_index = (buf[0+2] & 0xf0) >> 4;
-   h->sr_index = (buf[0+2] & 0x0c) >> 2;
-   h->pad = (buf[0+2] & 0x02) >> 1;
-   h->private_bit = (buf[0+2] & 0x01);
-   h->mode = (buf[0+3] & 0xc0) >> 6;
-   h->mode_ext = (buf[0+3] & 0x30) >> 4;
-   h->cr = (buf[0+3] & 0x08) >> 3;
-   h->original = (buf[0+3] & 0x04) >> 2;
-   h->emphasis = (buf[0+3] & 0x03);
-
-
-// if( mpeg25_flag ) {
- //    if( h->sr_index == 2 ) return 0;   // fail 8khz
- //}
-
-
-/* compute framebytes for Layer I, II, III */
-   if (h->option < 1)
-      return 0;
-   if (h->option > 3)
-      return 0;
-
-   framebytes = 0;
-
-   if (h->br_index > 0)
-   {
-      if (h->option == 3)
-      {				/* layer I */
-	 framebytes =
-	    240 * mp_br_tableL1[h->id][h->br_index]
-	    / mp_sr20_table[h->id][h->sr_index];
-	 framebytes = 4 * framebytes;
-      }
-      else if (h->option == 2)
-      {				/* layer II */
-	 framebytes =
-	    2880 * mp_br_table[h->id][h->br_index]
-	    / mp_sr20_table[h->id][h->sr_index];
-      }
-      else if (h->option == 1)
-      {				/* layer III */
-	 if (h->id)
-	 {			// mpeg1
-
-	    framebytes =
-	       2880 * mp_br_tableL3[h->id][h->br_index]
-	       / mp_sr20_table[h->id][h->sr_index];
-	 }
-	 else
-	 {			// mpeg2
-
-	    if (mpeg25_flag)
-	    {			// mpeg2.2
-
-	       framebytes =
-		  2880 * mp_br_tableL3[h->id][h->br_index]
-		  / mp_sr20_table[h->id][h->sr_index];
-	    }
-	    else
-	    {
-	       framebytes =
-		  1440 * mp_br_tableL3[h->id][h->br_index]
-		  / mp_sr20_table[h->id][h->sr_index];
-	    }
-	 }
-      }
-   }
-   else
-      framebytes = find_sync(buf, n);	/* free format */
-
-  return framebytes;
-}
-
-int head_info3(unsigned char *buf, unsigned int n, MPEG_HEAD *h, int *br, unsigned int *searchForward) {
-	unsigned int pBuf = 0;
-	// jdw insertion...
-   while ((pBuf < n) && !((buf[pBuf] == 0xFF) && 
-          ((buf[pBuf+1] & 0xF0) == 0xF0 || (buf[pBuf+1] & 0xF0) == 0xE0))) 
-   {
-		pBuf++;
-   }
-
-   if (pBuf == n) return 0;
-
-   *searchForward = pBuf;
-   return head_info2(&(buf[pBuf]),n,h,br);
-
-}
-
-/*--------------------------------------------------------------*/
-int head_info2(unsigned char *buf, unsigned int n, MPEG_HEAD * h, int *br)
-{
-   int framebytes;
-
-/*---  return br (in bits/sec) in addition to frame bytes ---*/
-
-   *br = 0;
-/*-- assume fail --*/
-   framebytes = head_info(buf, n, h);
-
-   if (framebytes == 0)
-      return 0; 
-
-   if (h->option == 1)
-   {				/* layer III */
-      if (h->br_index > 0)
-	 *br = 1000 * mp_br_tableL3[h->id][h->br_index];
-      else
-      {
-	 if (h->id)		// mpeg1
-
-	    *br = 1000 * framebytes * mp_sr20_table[h->id][h->sr_index] / (144 * 20);
-	 else
-	 {			// mpeg2
-
-	    if ((h->sync & 1) == 0)	//  flags mpeg25
-
-	       *br = 500 * framebytes * mp_sr20_table[h->id][h->sr_index] / (72 * 20);
-	    else
-	       *br = 1000 * framebytes * mp_sr20_table[h->id][h->sr_index] / (72 * 20);
-	 }
-      }
-   }
-   if (h->option == 2)
-   {				/* layer II */
-      if (h->br_index > 0)
-	 *br = 1000 * mp_br_table[h->id][h->br_index];
-      else
-	 *br = 1000 * framebytes * mp_sr20_table[h->id][h->sr_index]
-	    / (144 * 20);
-   }
-   if (h->option == 3)
-   {				/* layer I */
-      if (h->br_index > 0)
-	 *br = 1000 * mp_br_tableL1[h->id][h->br_index];
-      else
-	 *br = 1000 * framebytes * mp_sr20_table[h->id][h->sr_index]
-	    / (48 * 20);
-   }
-
-
-   return framebytes;
-}
-/*--------------------------------------------------------------*/
-static int compare(unsigned char *buf, unsigned char *buf2)
-{
-   if (buf[0] != buf2[0])
-      return 0;
-   if (buf[1] != buf2[1])
-      return 0;
-   return 1;
-}
-/*----------------------------------------------------------*/
-/*-- does not scan for initial sync, initial sync assumed --*/
-static int find_sync(unsigned char *buf, int n)
-{
-   int i0, isync, nmatch, pad;
-   int padbytes, option;
-
-/* mod 4/12/95 i0 change from 72, allows as low as 8kbits for mpeg1 */
-   i0 = 24;
-   padbytes = 1;
-   option = (buf[1] & 0x06) >> 1;
-   if (option == 3)
-   {
-      padbytes = 4;
-      i0 = 24;			/* for shorter layer I frames */
-   }
-
-   pad = (buf[2] & 0x02) >> 1;
-
-   n -= 3;			/*  need 3 bytes of header  */
-
-   while (i0 < 2000)
-   {
-      isync = sync_scan(buf, n, i0);
-      i0 = isync + 1;
-      isync -= pad;
-      if (isync <= 0)
-	 return 0;
-      nmatch = sync_test(buf, n, isync, padbytes);
-      if (nmatch > 0)
-	 return isync;
-   }
-
-   return 0;
-}
-/*------------------------------------------------------*/
-/*---- scan for next sync, assume start is valid -------*/
-/*---- return number bytes to next sync ----------------*/
-static int sync_scan(unsigned char *buf, int n, int i0)
-{
-   int i;
-
-   for (i = i0; i < n; i++)
-      if (compare(buf, buf + i))
-	 return i;
-
-   return 0;
-}
-/*------------------------------------------------------*/
-/*- test consecutative syncs, input isync without pad --*/
-static int sync_test(unsigned char *buf, int n, int isync, int padbytes)
-{
-   int i, nmatch, pad;
-
-   nmatch = 0;
-   for (i = 0;;)
-   {
-      pad = padbytes * ((buf[i + 2] & 0x02) >> 1);
-      i += (pad + isync);
-      if (i > n)
-	 break;
-      if (!compare(buf, buf + i))
-	 return -nmatch;
-      nmatch++;
-   }
-   return nmatch;
-}