#include "synth_filter.h"
void ff_synth_filter_float(FFTContext *imdct,
- float *synth_buf_ptr, int *synth_buf_offset,
- float synth_buf2[32], const float window[512],
- float out[32], const float in[32], float scale, float bias)
+ float *synth_buf_ptr, int *synth_buf_offset,
+ float synth_buf2[32], const float window[512],
+ float out[32], const float in[32], float scale, float bias)
{
float *synth_buf= synth_buf_ptr + *synth_buf_offset;
int i, j;
ff_imdct_half(imdct, synth_buf, in);
for (i = 0; i < 16; i++){
- float a= synth_buf2[i ];
- float b= synth_buf2[i+16];
+ float a= synth_buf2[i ];
+ float b= synth_buf2[i + 16];
float c= 0;
float d= 0;
for (j = 0; j < 512 - *synth_buf_offset; j += 64){
- a += window[i+j ]*(-synth_buf[15-i+j]);
- b += window[i+j+16]*( synth_buf[ i+j]);
- c += window[i+j+32]*( synth_buf[16+i+j]);
- d += window[i+j+48]*( synth_buf[31-i+j]);
+ a += window[i + j ]*(-synth_buf[15 - i + j ]);
+ b += window[i + j + 16]*( synth_buf[ i + j ]);
+ c += window[i + j + 32]*( synth_buf[16 + i + j ]);
+ d += window[i + j + 48]*( synth_buf[31 - i + j ]);
}
for ( ; j < 512; j += 64){
- a += window[i+j ]*(-synth_buf[15-i+j-512]);
- b += window[i+j+16]*( synth_buf[ i+j-512]);
- c += window[i+j+32]*( synth_buf[16+i+j-512]);
- d += window[i+j+48]*( synth_buf[31-i+j-512]);
+ a += window[i + j ]*(-synth_buf[15 - i + j - 512]);
+ b += window[i + j + 16]*( synth_buf[ i + j - 512]);
+ c += window[i + j + 32]*( synth_buf[16 + i + j - 512]);
+ d += window[i + j + 48]*( synth_buf[31 - i + j - 512]);
}
- out[i ] = a * scale + bias;
- out[i+16] = b * scale + bias;
- synth_buf2[i ] = c;
- synth_buf2[i+16] = d;
+ out[i ] = a*scale + bias;
+ out[i + 16] = b*scale + bias;
+ synth_buf2[i ] = c;
+ synth_buf2[i + 16] = d;
}
- *synth_buf_offset= (*synth_buf_offset-32)&511;
+ *synth_buf_offset= (*synth_buf_offset - 32)&511;
}