quicktime/ffmpeg/libavcodec/liba52/resample.c

   1
   2 // a52_resample_init should find the requested converter (from type flags ->
   3 // given number of channels) and set up some function pointers...
   4
   5 // a52_resample() should do the conversion.
   6
   7 #include "a52.h"
   8 #include "mm_accel.h"
   9 #include "config.h"
  10 #include "../libpostproc/mangle.h"
  11
  12 int (* a52_resample) (float * _f, int16_t * s16)=NULL;
  13
  14 #include "resample_c.c"
  15
  16 #ifdef ARCH_X86
  17 #include "resample_mmx.c"
  18 #endif
  19
  20 void* a52_resample_init(uint32_t mm_accel,int flags,int chans){
  21 void* tmp;
  22
  23 #ifdef ARCH_X86
  24     if(mm_accel&MM_ACCEL_X86_MMX){
  25         tmp=a52_resample_MMX(flags,chans);
  26         if(tmp){
  27             if(a52_resample==NULL) av_log(NULL, AV_LOG_INFO, "Using MMX optimized resampler\n");
  28             a52_resample=tmp;
  29             return tmp;
  30         }
  31     }
  32 #endif
  33
  34     tmp=a52_resample_C(flags,chans);
  35     if(tmp){
  36         if(a52_resample==NULL) av_log(NULL, AV_LOG_INFO, "No accelerated resampler found\n");
  37         a52_resample=tmp;
  38         return tmp;
  39     }
  40
  41     av_log(NULL, AV_LOG_ERROR, "Unimplemented resampler for mode 0x%X -> %d channels conversion - Contact MPlayer developers!\n", flags, chans);
  42     return NULL;
  43 }