#include "avcodec.h"
#include "celp_filters.h"
-void ff_celp_convolve_circ(int16_t* fc_out,
- const int16_t* fc_in,
- const int16_t* filter,
- int len)
+void ff_celp_convolve_circ(int16_t* fc_out, const int16_t* fc_in,
+ const int16_t* filter, int len)
{
int i, k;
out[k] = in[k] + fac * lagged[ k - lag];
}
-int ff_celp_lp_synthesis_filter(int16_t *out,
- const int16_t* filter_coeffs,
- const int16_t* in,
- int buffer_length,
- int filter_length,
- int stop_on_overflow,
+int ff_celp_lp_synthesis_filter(int16_t *out, const int16_t *filter_coeffs,
+ const int16_t *in, int buffer_length,
+ int filter_length, int stop_on_overflow,
int rounder)
{
int i,n;
return 0;
}
-void ff_celp_lp_synthesis_filterf(float *out,
- const float* filter_coeffs,
- const float* in,
- int buffer_length,
+void ff_celp_lp_synthesis_filterf(float *out, const float *filter_coeffs,
+ const float* in, int buffer_length,
int filter_length)
{
int i,n;
+#if 0 // Unoptimized code path for improved readability
+ for (n = 0; n < buffer_length; n++) {
+ out[n] = in[n];
+ for (i = 1; i <= filter_length; i++)
+ out[n] -= filter_coeffs[i-1] * out[n-i];
+ }
+#else
float out0, out1, out2, out3;
float old_out0, old_out1, old_out2, old_out3;
float a,b,c;
for (i = 1; i <= filter_length; i++)
out[n] -= filter_coeffs[i-1] * out[n-i];
}
+#endif
}
-void ff_celp_lp_zero_synthesis_filterf(float *out,
- const float* filter_coeffs,
- const float* in,
- int buffer_length,
+void ff_celp_lp_zero_synthesis_filterf(float *out, const float *filter_coeffs,
+ const float *in, int buffer_length,
int filter_length)
{
int i,n;