dsp16_filt_interpolation.c File Reference

#include "dsp.h"

Macros
#define	DSP16_INTERPOLATION_KERNEL_X_FCT(x_num, data)
#define	DSP16_INTERPOLATION_NO_LOOP_KERNEL_X_FCT(x_num, data)
#define	DSP16_INTREPOLATION_FILTER(x_num, data)   sum += ph[(x_num+data)] * pvect2[-(x_num+data)];
#define	DSP16_INTREPOLATION_FILTER_FUNCTION_NAME(x_num, data)   TPASTE2(dsp16_filt_interpolation_kernel_x, x_num),
#define	DSP16_INTREPOLATION_NO_LOOP_FILTER_FUNCTION_NAME(x_num, data)   TPASTE2(dsp16_filt_interpolation_no_loop_kernel_x, x_num),
#define	LOOP_UNROLL   6
#define	LOOP_UNROLL_PLUS_ONE   7

Functions
void	dsp16_filt_interpolation (dsp16_t *vect1, dsp16_t *vect2, int vect2_size, dsp16_t *h, int h_size, int interpolation_ratio)
	This function interpolates a vector. More...
static void	dsp16_filt_interpolation_no_loop_kernel_x0 (dsp16_t *vect1, dsp16_t *vect2, int vect2_size, dsp16_t *h, int h_size, int interpolation_ratio)

#define DSP16_INTERPOLATION_KERNEL_X_FCT	(		x_num,
			data
	)

Value:

static void TPASTE2(dsp16_filt_interpolation_kernel_x, x_num)(dsp16_t *vect1, dsp16_t *vect2, int vect2_size, dsp16_t *h, int h_size, int interpolation_ratio) \
{                                                                               \
  S32 sum = 0;                                                                  \
  int i, k, n;                                                                  \
  int n_tap;                                                                    \
  dsp16_t *ph;                                                                  \
  dsp16_t *pvect1;                                                              \
  dsp16_t *pvect2;                                                              \
                                                                                \
  pvect1 = vect1;                                                               \
  n_tap = h_size / interpolation_ratio;                                         \
                                                                                \
  for(n=0; n<vect2_size; n++)                                                   \
  {                                                                             \
    for(k=0; k<interpolation_ratio; k++)                                        \
    {                                                                           \
      sum = 0;                                                                  \
      ph = &h[k*n_tap];                                                         \
      pvect2 = &vect2[n + n_tap - 1];                                           \
      for(i=0; i<n_tap - LOOP_UNROLL + 1; i += LOOP_UNROLL)                     \
      {                                                                         \
        MREPEAT(LOOP_UNROLL, DSP16_INTREPOLATION_FILTER, 0)                     \
        ph += LOOP_UNROLL;                                                      \
        pvect2 -= LOOP_UNROLL;                                                  \
      }                                                                         \
      MREPEAT(x_num, DSP16_INTREPOLATION_FILTER, 0);                            \
      *pvect1++ = sum >> DSP16_QB;                                              \
    }                                                                           \
  }                                                                             \
}

#define DSP16_INTERPOLATION_NO_LOOP_KERNEL_X_FCT	(		x_num,
			data
	)

Value:

static void TPASTE2(dsp16_filt_interpolation_no_loop_kernel_x, x_num)(dsp16_t *vect1, dsp16_t *vect2, int vect2_size, dsp16_t *h, int h_size, int interpolation_ratio) \
{                                                                               \
  S32 sum = 0;                                                                  \
  int k, n;                                                                     \
  int n_tap;                                                                    \
  dsp16_t *ph;                                                                  \
  dsp16_t *pvect1;                                                              \
  dsp16_t *pvect2;                                                              \
                                                                                \
  pvect1 = vect1;                                                               \
  n_tap = h_size / interpolation_ratio;                                         \
                                                                                \
  for(n=0; n<vect2_size; n++)                                                   \
  {                                                                             \
    pvect2 = &vect2[n + n_tap - 1];                                             \
    for(k=0; k<interpolation_ratio; k++)                                        \
    {                                                                           \
      sum = 0;                                                                  \
      ph = &h[k*n_tap];                                                         \
      MREPEAT(x_num, DSP16_INTREPOLATION_FILTER, 0)                             \
      *pvect1++ = sum >> DSP16_QB;                                              \
    }                                                                           \
  }                                                                             \
}

#define DSP16_INTREPOLATION_FILTER	(		x_num,
			data
	)		sum += ph[(x_num+data)] * pvect2[-(x_num+data)];

#define DSP16_INTREPOLATION_FILTER_FUNCTION_NAME	(		x_num,
			data
	)		TPASTE2(dsp16_filt_interpolation_kernel_x, x_num),

Referenced by dsp16_filt_interpolation().

#define DSP16_INTREPOLATION_NO_LOOP_FILTER_FUNCTION_NAME	(		x_num,
			data
	)		TPASTE2(dsp16_filt_interpolation_no_loop_kernel_x, x_num),

Referenced by dsp16_filt_interpolation().

#define LOOP_UNROLL   6

Referenced by dsp16_filt_interpolation().

#define LOOP_UNROLL_PLUS_ONE   7

Referenced by dsp16_filt_interpolation().

static void dsp16_filt_interpolation_no_loop_kernel_x0 ( dsp16_t *  vect1, dsp16_t *  vect2, int  vect2_size, dsp16_t *  h, int  h_size, int  interpolation_ratio  )

static

References vect1.