rpitx/csdr
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

Added convert_s24_f and convert_f_s24

Browse source
This commit is contained in:
ha7ilm 2016-06-21 00:14:03 +02:00
parent 84e00184af
commit c4b3527490
3 changed files with 77 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
csdr.c
View file

@ -61,6 +61,8 @@ char usage[]=
" convert_f_s8\n"
" convert_f_s16\n"
" convert_s16_f\n"
" convert_f_s24\n"
" convert_s24_f\n"
" realpart_cf\n"
" clipdetect_ff\n"
" limit_ff [max_amplitude]\n"
@ -486,7 +488,7 @@ int main(int argc, char *argv[])
TRY_YIELD;
}
}
if((!strcmp(argv[1],"convert_i16_f")) || (!strcmp(argv[1],"convert_s16_f"))) //not tested
if((!strcmp(argv[1],"convert_i16_f")) || (!strcmp(argv[1],"convert_s16_f")))
{
if(!sendbufsize(initialize_buffers())) return -2;
for(;;)
@ -498,6 +500,32 @@ int main(int argc, char *argv[])
TRY_YIELD;
}
}
if(!strcmp(argv[1],"convert_f_s24"))
{
int bigendian = argc>2 && !strcmp(argv[2],"--bigendian");
if(!sendbufsize(initialize_buffers())) return -2;
for(;;)
{
FEOF_CHECK;
FREAD_R;
convert_f_s24(input_buffer, (unsigned char*)output_buffer, the_bufsize, bigendian);
fwrite(output_buffer, sizeof(unsigned char)*3, the_bufsize, stdout);
TRY_YIELD;
}
}
if(!strcmp(argv[1],"convert_s24_f"))
{
int bigendian = argc>2 && !strcmp(argv[2],"--bigendian");
if(!sendbufsize(initialize_buffers())) return -2;
for(;;)
{
FEOF_CHECK;
fread(input_buffer, sizeof(unsigned char)*3, the_bufsize, stdin);
convert_s24_f((unsigned char*)input_buffer, output_buffer, the_bufsize, bigendian);
FWRITE_R;
TRY_YIELD;
}
}
if(!strcmp(argv[1],"realpart_cf"))
{
if(!sendbufsize(initialize_buffers())) return -2;

37
libcsdr.c
View file

@ -999,6 +999,43 @@ void convert_f_s16(float* input, short* output, int input_size)
void convert_i16_f(short* input, float* output, int input_size) { convert_s16_f(input, output, input_size); }
void convert_f_i16(float* input, short* output, int input_size) { convert_f_s16(input, output, input_size); }
void convert_f_s24(float* input, unsigned char* output, int input_size, int bigendian)
{
int k=0;
if(bigendian) for(int i=0;i<input_size;i++)
{
int temp=input[i]*INT_MAX;
unsigned char* ptemp=(unsigned char*)&temp;
output[k++]=*ptemp;
output[k++]=*(ptemp+1);
output[k++]=*(ptemp+2);
}
else for(int i=0;i<input_size;i++)
{
int temp=input[i]*INT_MAX;
unsigned char* ptemp=(unsigned char*)&temp;
output[k++]=*(ptemp+2);
output[k++]=*(ptemp+1);
output[k++]=*ptemp;
}
}
void convert_s24_f(unsigned char* input, float* output, int input_size, int bigendian)
{
int k=0;
if(bigendian) for(int i=0;i<input_size*3;i+=3)
{
int temp=(input[i+2]<<8)|(input[i+1]<<16)|(input[i]<<24);
output[k++]=((float)temp)/INT_MAX;
}
else for(int i=0;i<input_size*3;i+=3)
{
int temp=(input[i]<<8)|(input[i+1]<<16)|(input[i+2]<<24);
output[k++]=((float)temp)/INT_MAX;
}
}
int trivial_vectorize()
{
//this function is trivial to vectorize and should pass on both NEON and SSE

3
libcsdr.h
View file

@ -176,5 +176,8 @@ void convert_f_s16(float* input, short* output, int input_size);
void convert_s16_f(short* input, float* output, int input_size);
void convert_f_i16(float* input, short* output, int input_size);
void convert_i16_f(short* input, float* output, int input_size);
void convert_f_s24(float* input, unsigned char* output, int input_size, int bigendian);
void convert_s24_f(unsigned char* input, float* output, int input_size, int bigendian);
int is_nan(float f);