Revision 384dbd61

View differences:

libavcodec/lpc.c
28 28 
/**
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 * Apply Welch window function to audio block
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 */
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static void apply_welch_window_c(const int32_t *data, int len, double *w_data)
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static void lpc_apply_welch_window_c(const int32_t *data, int len,
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                                     double *w_data)
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{
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    int i, n2;
34 35 
    double w;
......
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 * A Welch window function is applied before calculation.
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 */
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static void lpc_compute_autocorr_c(const double *data, int len, int lag,
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                             double *autoc)
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                                   double *autoc)
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{
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    int i, j;
61 62 

  		




  ......




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        s->windowed_samples = NULL;


  		




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    }


  		




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    s->lpc_apply_welch_window = apply_welch_window_c;


  		




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    s->lpc_compute_autocorr = lpc_compute_autocorr_c;


  		




  
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    s->lpc_apply_welch_window = lpc_apply_welch_window_c;


  		




  
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    s->lpc_compute_autocorr   = lpc_compute_autocorr_c;


  		




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    if (HAVE_MMX)


  		




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        ff_lpc_init_x86(s);


  		












  

    
      libavcodec/x86/lpc_mmx.c
    
  





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#include "libavutil/cpu.h"


  		




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#include "libavcodec/lpc.h"


  		




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  26
  
  
    
static void apply_welch_window_sse2(const int32_t *data, int len, double *w_data)


  		




  
  26
  
    
static void lpc_apply_welch_window_sse2(const int32_t *data, int len,


  		




  
  27
  
    
                                        double *w_data)


  		




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{


  		




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    double c = 2.0 / (len-1.0);


  		




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    int n2 = len>>1;


  		




  ......




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}


  		




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static void lpc_compute_autocorr_sse2(const double *data, int len, int lag,


  		




  73
  
  
    
                                   double *autoc)


  		




  
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                                      double *autoc)


  		




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{


  		




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    int j;


  		




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  ......




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    int mm_flags = av_get_cpu_flags();


  		




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    if (mm_flags & (AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW)) {


  		




  143
  
  
    
        c->lpc_apply_welch_window = apply_welch_window_sse2;


  		




  144
  
  
    
        c->lpc_compute_autocorr = lpc_compute_autocorr_sse2;


  		




  
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        c->lpc_apply_welch_window = lpc_apply_welch_window_sse2;


  		




  
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        c->lpc_compute_autocorr   = lpc_compute_autocorr_sse2;


  		




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    }


  		




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}


  		












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