liba52/resample.c

   1 /*
   2  * resample.c
   3  * Copyright (C) 2001 Árpád Gereöffy
   4  *
   5  * This file is part of a52dec, a free ATSC A-52 stream decoder.
   6  * See http://liba52.sourceforge.net/ for updates.
   7  *
   8  * File added for use with MPlayer and not part of original a52dec.
   9  *
  10  * a52dec is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * a52dec is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 // a52_resample_init should find the requested converter (from type flags ->
  26 // given number of channels) and set up some function pointers...
  27
  28 // a52_resample() should do the conversion.
  29
  30 #include <inttypes.h>
  31 #include <stdio.h>
  32 #include "a52.h"
  33 #include "mm_accel.h"
  34 #include "config.h"
  35 #include "mangle.h"
  36
  37 int (* a52_resample) (float * _f, int16_t * s16)=NULL;
  38
  39 #include "resample_c.c"
  40
  41 #if defined(ARCH_X86) || defined(ARCH_X86_64)
  42 #include "resample_mmx.c"
  43 #endif
  44
  45 #ifdef HAVE_ALTIVEC
  46 #include "resample_altivec.c"
  47 #endif
  48
  49 void* a52_resample_init(uint32_t mm_accel,int flags,int chans){
  50 void* tmp;
  51
  52 #if defined(ARCH_X86) || defined(ARCH_X86_64)
  53     if(mm_accel&MM_ACCEL_X86_MMX){
  54         tmp=a52_resample_MMX(flags,chans);
  55         if(tmp){
  56             if(a52_resample==NULL) fprintf(stderr, "Using MMX optimized resampler\n");
  57             a52_resample=tmp;
  58             return tmp;
  59         }
  60     }
  61 #endif
  62 #ifdef HAVE_ALTIVEC
  63     if(mm_accel&MM_ACCEL_PPC_ALTIVEC){
  64       tmp=a52_resample_altivec(flags,chans);
  65       if(tmp){
  66        if(a52_resample==NULL) fprintf(stderr, "Using AltiVec optimized resampler\n");
  67        a52_resample=tmp;
  68        return tmp;
  69       }
  70     }
  71 #endif
  72
  73     tmp=a52_resample_C(flags,chans);
  74     if(tmp){
  75         if(a52_resample==NULL) fprintf(stderr, "No accelerated resampler found\n");
  76         a52_resample=tmp;
  77         return tmp;
  78     }
  79
  80     fprintf(stderr, "Unimplemented resampler for mode 0x%X -> %d channels conversion - Contact MPlayer developers!\n", flags, chans);
  81     return NULL;
  82 }