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Commit 4d19f6ae authored by frtabu's avatar frtabu
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dft tests

parent d126ba9b
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Showing with 27 additions and 19 deletions
openair1/PHY/TOOLS/oai_kissdfts.c
View file @ 4d19f6ae
...@@ -85,19 +85,20 @@ void convert_floattoshort(int size,float *input,short *output,int factor){ ...@@ -85,19 +85,20 @@ void convert_floattoshort(int size,float *input,short *output,int factor){
} }
} }
void rescale(int size,int16_t *input,int16_t *output){
void rescale_up_int16buff(int size,int16_t *input, int factor){
for (int i=0;i<(size*2);i=i+1){ for (int i=0;i<(size*2);i=i+1){
output[i]=(input[i]*32); input[i]=(input[i]*factor);
} }
} }
void rescale_dftin(int size,int16_t *input){ void rescale_up_newint16buff(int size,int16_t *input, int16_t *output,int factor){
for (int i=0;i<(size*2);i=i+1){ for (int i=0;i<(size*2);i=i+1){
input[i]=(input[i]*32); output[i]=(input[i]*factor);
} }
} }
void rescale_dftout(int size,int16_t *input, int factor){ void rescale_down_int16buff(int size,int16_t *input, int factor){
for (int i=0;i<(size*2);i=i+1){ for (int i=0;i<(size*2);i=i+1){
input[i]=(input[i]/factor); input[i]=(input[i]/factor);
} }
...@@ -109,13 +110,13 @@ void print_minmax(int size,int16_t *buf,int scale_flag) { ...@@ -109,13 +110,13 @@ void print_minmax(int size,int16_t *buf,int scale_flag) {
if (buf[i]>vmax) vmax=buf[i]; if (buf[i]>vmax) vmax=buf[i];
if (buf[i]<vmin) vmin=buf[i]; if (buf[i]<vmin) vmin=buf[i];
} }
// if (scale_flag == 0 || (vmax - vmin)>150) if (scale_flag == 0 || (vmax - vmin)>10)
// printf("%i: %i - %i\n",scale_flag,vmin,vmax); printf("%i: %i - %i\n",scale_flag,vmin,vmax);
} }
void dft(uint8_t sizeidx,int16_t *input,int16_t *output,unsigned char scale_flag){ void dft(uint8_t sizeidx,int16_t *input,int16_t *output,unsigned char scale_flag){
#ifndef FIXED_POINT #ifndef FIXED_POINT
float input_float[98304*2]; float input_float[98304*2*sizeof(float)];
float output_float[98304*2]; float output_float[98304*2*sizeof(float)];
convert_shorttofloat(fftsizes[sizeidx],input,input_float,1); convert_shorttofloat(fftsizes[sizeidx],input,input_float,1);
kiss_fft(fftcfg[sizeidx],(kiss_fft_cpx *)input_float,(kiss_fft_cpx *)output_float); kiss_fft(fftcfg[sizeidx],(kiss_fft_cpx *)input_float,(kiss_fft_cpx *)output_float);
if (scale_flag) if (scale_flag)
...@@ -123,12 +124,19 @@ void dft(uint8_t sizeidx,int16_t *input,int16_t *output,unsigned char scale_flag ...@@ -123,12 +124,19 @@ void dft(uint8_t sizeidx,int16_t *input,int16_t *output,unsigned char scale_flag
else else
convert_floattoshort(fftsizes[sizeidx],output_float,output,98304); convert_floattoshort(fftsizes[sizeidx],output_float,output,98304);
#else #else
rescale_dftin(fftsizes[sizeidx],input); int16_t tmpbuff[98304*2*sizeof(int16_t)];
kiss_fft(fftcfg[sizeidx],(kiss_fft_cpx *)input,(kiss_fft_cpx *)output); int16_t *inputptr;
// if (scale_flag) {
rescale_up_newint16buff(fftsizes[sizeidx],input,tmpbuff,16);
inputptr=tmpbuff;
// }
// else
// inputptr=input;
kiss_fft(fftcfg[sizeidx],(kiss_fft_cpx *)inputptr,(kiss_fft_cpx *)output);
if (scale_flag) if (scale_flag)
rescale_dftout(fftsizes[sizeidx],output,32); rescale_down_int16buff(fftsizes[sizeidx],output,64);
else else
rescale_dftout(fftsizes[sizeidx],output,8); rescale_down_int16buff(fftsizes[sizeidx],output,16);
// olddft(sizeidx,input,output,scale_flag); // olddft(sizeidx,input,output,scale_flag);
print_minmax(fftsizes[sizeidx],output,scale_flag); print_minmax(fftsizes[sizeidx],output,scale_flag);
#endif #endif
...@@ -142,10 +150,10 @@ void idft(uint8_t sizeidx, int16_t *input,int16_t *output,unsigned char scale_fl ...@@ -142,10 +150,10 @@ void idft(uint8_t sizeidx, int16_t *input,int16_t *output,unsigned char scale_fl
kiss_fft(ifftcfg[sizeidx],(kiss_fft_cpx *)input_float2,(kiss_fft_cpx *)output_float2); kiss_fft(ifftcfg[sizeidx],(kiss_fft_cpx *)input_float2,(kiss_fft_cpx *)output_float2);
convert_floattoshort(ifftsizes[sizeidx],output_float2,output,98304); convert_floattoshort(ifftsizes[sizeidx],output_float2,output,98304);
#else #else
int16_t inputrs[98304*2];
if (scale_flag) if (scale_flag)
rescale(ifftsizes[sizeidx],input,inputrs); rescale_up_int16buff(ifftsizes[sizeidx],input,16);
kiss_fft(ifftcfg[sizeidx],(kiss_fft_cpx *)inputrs,(kiss_fft_cpx *)output); kiss_fft(ifftcfg[sizeidx],(kiss_fft_cpx *)input,(kiss_fft_cpx *)output);
// oldidft(sizeidx,input,output,scale_flag);
// print_minmax(ifftsizes[sizeidx],output,scale_flag);
#endif #endif
}; };
\ No newline at end of file
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