Added octave_complex_c, finished timing_recovery_cc debug, fixed indent
This commit is contained in:
ha7ilm
parent
ccf09a1b99
commit
26c12746eb
3 changed files with 143 additions and 67 deletions
51
csdr.c
51
csdr.c
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@ -122,6 +122,8 @@ char usage[]=
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" rtty_line_decoder_sy_u8\n"
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" rtty_baudot2ascii_u8_u8\n"
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" serial_line_decoder_sy_u8\n"
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" octave_complex_c <samples_to_plot> <out_of_n_samples>\n"
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" timing_recovery_cc <algorithm> <decimation> [--add_q]\n"
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" \n"
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;
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@ -2364,16 +2366,21 @@ int main(int argc, char *argv[])
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int add_q = (argc>=5 && !strcmp(argv[4], "--add_q"));
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int debug_n = 0;
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if(argc>=7 && !strcmp(argv[5], "--octave")) debug_n = atoi(argv[6]);
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if(!initialize_buffers()) return -2;
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sendbufsize(the_bufsize/decimation);
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timing_recovery_state_t state = timing_recovery_init(algorithm, decimation, add_q);
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int debug_i=0;
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FREAD_C;
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for(;;)
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{
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FEOF_CHECK;
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timing_recovery_cc((complexf*)input_buffer, (complexf*)output_buffer, the_bufsize, &state);
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if(++debug_i%debug_n==0) timing_recovery_trigger_debug(&state, 3);
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//fprintf(stderr, "os %d\n",state.output_size);
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fwrite(output_buffer, sizeof(complexf), state.output_size, stdout);
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fflush(stdout);
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@ -2384,10 +2391,52 @@ int main(int argc, char *argv[])
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}
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}
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if(!strcmp(argv[1],"octave_complex_c"))
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{
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if(argc<=2) return badsyntax("need required parameter (samples_to_plot)");
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int samples_to_plot = 0;
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sscanf(argv[2], "%d", &samples_to_plot);
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if(samples_to_plot<=0) badsyntax("Number of samples to plot should be > 0");
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if(argc<=3) return badsyntax("need required parameter (out_of_n_samples)");
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int out_of_n_samples = 0;
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sscanf(argv[3], "%d", &out_of_n_samples);
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if(out_of_n_samples<samples_to_plot) badsyntax("out_of_n_samples should be < samples_to_plot");
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complexf* read_buf = (complexf*)malloc(sizeof(complexf)*the_bufsize);
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if(!sendbufsize(initialize_buffers())) return -2;
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for(;;)
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{
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fread(read_buf, sizeof(complexf), samples_to_plot, stdin);
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printf("N = %d;\nisig = [", samples_to_plot);
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for(int i=0;i<samples_to_plot;i++) printf("%f ", iof(read_buf, i));
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printf("];\nqsig = [");
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for(int i=0;i<samples_to_plot;i++) printf("%f ", qof(read_buf, i));
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printf("];\nzsig = [0:N-1];\nplot3(isig,zsig,qsig);\n");
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//printf("xlim([-1 1]);\nzlim([-1 1]);\n");
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fflush(stdout);
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//if(fseek(stdin, (out_of_n_samples - samples_to_plot)*sizeof(complexf), SEEK_CUR)<0) { perror("fseek error"); return -3; } //this cannot be used on stdin
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for(int seek_remain=out_of_n_samples-samples_to_plot;seek_remain>0;seek_remain-=samples_to_plot)
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{
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fread(read_buf, sizeof(complexf), MIN_M(samples_to_plot,seek_remain), stdin);
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}
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FEOF_CHECK;
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TRY_YIELD;
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}
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}
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if(!strcmp(argv[1],"none"))
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{
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return 0;
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}
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fprintf(stderr,"csdr: function name given in argument 1 (%s) does not exist. Possible causes:\n- You mistyped the commandline.\n- You need to update csdr to a newer version (if available).", argv[1]); return -1;
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if(argv[1][0]=='?')
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{
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char buffer[100];
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snprintf(buffer, 100-1, "csdr 2>&1 | grep %s", argv[1]+1);
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fprintf(stderr, "csdr ?: %s\n", buffer);
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system(buffer);
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return 0;
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}
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fprintf(stderr,"csdr: function name given in argument 1 (%s) does not exist. Possible causes:\n- You mistyped the commandline.\n- You need to update csdr to a newer version (if available).\n", argv[1]); return -1;
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}
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156
libcsdr.c
156
libcsdr.c
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@ -38,6 +38,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "libcsdr.h"
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#include "predefined.h"
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#include <assert.h>
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#include <stdarg.h>
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/*
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_ _ __ _ _
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@ -276,11 +277,11 @@ shift_unroll_data_t shift_unroll_init(float rate, int size)
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{
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myphase += output.phase_increment;
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while(myphase>PI) myphase-=2*PI;
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while(myphase<-PI) myphase+=2*PI;
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while(myphase<-PI) myphase+=2*PI;
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output.dsin[i]=sin(myphase);
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output.dcos[i]=cos(myphase);
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}
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return output;
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return output;
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}
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float shift_unroll_cc(complexf *input, complexf* output, int input_size, shift_unroll_data_t* d, float starting_phase)
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@ -323,7 +324,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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//input_size should be multiple of 4
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float cos_start[4], sin_start[4];
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float cos_vals[4], sin_vals[4];
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for(int i=0;i<4;i++)
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for(int i=0;i<4;i++)
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{
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cos_start[i] = cos(starting_phase);
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sin_start[i] = sin(starting_phase);
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@ -343,7 +344,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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#define RCOSV "q4" //cos_vals, sin_vals
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#define RSINV "q5"
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#define ROUTI "q6" //output_i, output_q
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#define ROUTQ "q7"
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#define ROUTQ "q7"
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#define RINPI "q8" //input_i, input_q
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#define RINPQ "q9"
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#define R3(x,y,z) x ", " y ", " z "\n\t"
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@ -353,7 +354,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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" vld1.32 {" RDSIN "}, [%[pdsin]]\n\t"
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" vld1.32 {" RCOSST "}, [%[cos_start]]\n\t"
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" vld1.32 {" RSINST "}, [%[sin_start]]\n\t"
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"for_addfast: vld2.32 {" RINPI "-" RINPQ "}, [%[pinput]]!\n\t" //load q0 and q1 directly from the memory address stored in pinput, with interleaving (so that we get the I samples in RINPI and the Q samples in RINPQ), also increment the memory address in pinput (hence the "!" mark)
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"for_addfast: vld2.32 {" RINPI "-" RINPQ "}, [%[pinput]]!\n\t" //load q0 and q1 directly from the memory address stored in pinput, with interleaving (so that we get the I samples in RINPI and the Q samples in RINPQ), also increment the memory address in pinput (hence the "!" mark)
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//C version:
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//cos_vals[j] = cos_start * d->dcos[j] - sin_start * d->dsin[j];
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@ -366,7 +367,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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//C version:
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//iof(output,4*i+j)=cos_vals[j]*iof(input,4*i+j)-sin_vals[j]*qof(input,4*i+j);
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//qof(output,4*i+j)=sin_vals[j]*iof(input,4*i+j)+cos_vals[j]*qof(input,4*i+j);
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//qof(output,4*i+j)=sin_vals[j]*iof(input,4*i+j)+cos_vals[j]*qof(input,4*i+j);
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" vmul.f32 " R3(ROUTI, RCOSV, RINPI) //output_i = cos_vals * input_i
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" vmls.f32 " R3(ROUTI, RSINV, RINPQ) //output_i -= sin_vals * input_q
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" vmul.f32 " R3(ROUTQ, RSINV, RINPI) //output_q = sin_vals * input_i
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@ -383,7 +384,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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[pinput]"+r"(pinput), [poutput]"+r"(poutput) //output operand list -> C variables that we will change from ASM
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:
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[pinput_end]"r"(pinput_end), [pdcos]"r"(pdcos), [pdsin]"r"(pdsin), [sin_start]"r"(sin_start), [cos_start]"r"(cos_start) //input operand list
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:
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:
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"memory", "q0", "q1", "q2", "q4", "q5", "q6", "q7", "q8", "q9", "cc" //clobber list
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);
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starting_phase+=input_size*d->phase_increment;
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@ -409,7 +410,7 @@ float shift_addfast_cc(complexf *input, complexf* output, int input_size, shift_
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float cos_start=cos(starting_phase);
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float sin_start=sin(starting_phase);
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float register cos_vals_0, cos_vals_1, cos_vals_2, cos_vals_3,
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sin_vals_0, sin_vals_1, sin_vals_2, sin_vals_3,
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sin_vals_0, sin_vals_1, sin_vals_2, sin_vals_3,
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dsin_0 = d->dsin[0], dsin_1 = d->dsin[1], dsin_2 = d->dsin[2], dsin_3 = d->dsin[3],
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dcos_0 = d->dcos[0], dcos_1 = d->dcos[1], dcos_2 = d->dcos[2], dcos_3 = d->dcos[3];
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@ -970,7 +971,7 @@ float deemphasis_wfm_ff (float* input, float* output, int input_size, float tau,
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output[0]=alpha*input[0]+(1-alpha)*last_output;
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for (int i=1;i<input_size;i++) //@deemphasis_wfm_ff
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output[i]=alpha*input[i]+(1-alpha)*output[i-1]; //this is the simplest IIR LPF
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return output[input_size-1];
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return output[input_size-1];
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}
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#define DNFMFF_ADD_ARRAY(x) if(sample_rate==x) { taps=deemphasis_nfm_predefined_fir_##x; taps_length=sizeof(deemphasis_nfm_predefined_fir_##x)/sizeof(float); }
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@ -1020,31 +1021,31 @@ void gain_ff(float* input, float* output, int input_size, float gain)
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float get_power_f(float* input, int input_size, int decimation)
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{
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float acc = 0;
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for(int i=0;i<input_size;i+=decimation)
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{
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acc += (input[i]*input[i])/input_size;
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}
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return acc;
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float acc = 0;
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for(int i=0;i<input_size;i+=decimation)
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{
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acc += (input[i]*input[i])/input_size;
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}
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return acc;
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}
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float get_power_c(complexf* input, int input_size, int decimation)
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{
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float acc = 0;
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for(int i=0;i<input_size;i+=decimation)
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{
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acc += (iof(input,i)*iof(input,i)+qof(input,i)*qof(input,i))/input_size;
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}
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return acc;
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float acc = 0;
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for(int i=0;i<input_size;i+=decimation)
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{
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acc += (iof(input,i)*iof(input,i)+qof(input,i)*qof(input,i))/input_size;
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}
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return acc;
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}
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/*
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__ __ _ _ _
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| \/ | | | | | | |
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| \ / | ___ __| |_ _| | __ _| |_ ___ _ __ ___
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| |\/| |/ _ \ / _` | | | | |/ _` | __/ _ \| '__/ __|
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| | | | (_) | (_| | |_| | | (_| | || (_) | | \__ \
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|_| |_|\___/ \__,_|\__,_|_|\__,_|\__\___/|_| |___/
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__ __ _ _ _
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| \/ | | | | | | |
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| \ / | ___ __| |_ _| | __ _| |_ ___ _ __ ___
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| |\/| |/ _ \ / _` | | | | |/ _` | __/ _ \| '__/ __|
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| | | | (_) | (_| | |_| | | (_| | || (_) | | \__ \
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|_| |_|\___/ \__,_|\__,_|_|\__,_|\ __\___/|_| |___/
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*/
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@ -1175,7 +1176,6 @@ void logpower_cf(complexf* input, float* output, int size, float add_db)
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void accumulate_power_cf(complexf* input, float* output, int size)
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{
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for(int i=0;i<size;i++) output[i] += iof(input,i)*iof(input,i) + qof(input,i)*qof(input,i); //@logpower_cf: pass 1
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}
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void log_ff(float* input, float* output, int size, float add_db) {
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@ -1573,14 +1573,14 @@ void binary_slicer_f_u8(float* input, unsigned char* output, int input_size)
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}
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/*
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_____ _ _______ _ _ _____
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/ ____| (_) ___ |__ __(_) (_) | __ \
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| | __ _ _ __ _ __ _ ___ _ __ ( _ ) | | _ _ __ ___ _ _ __ __ _ | |__) |___ ___ _____ _____ _ __ _ _
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_____ _ _______ _ _ _____
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/ ____| (_) ___ |__ __(_) (_) | __ \
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| | __ _ _ __ _ __ _ ___ _ __ ( _ ) | | _ _ __ ___ _ _ __ __ _ | |__) |___ ___ _____ _____ _ __ _ _
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| | / _` | '__| '__| |/ _ \ '__| / _ \/\ | | | | '_ ` _ \| | '_ \ / _` | | _ // _ \/ __/ _ \ \ / / _ \ '__| | | |
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| |___| (_| | | | | | | __/ | | (_> < | | | | | | | | | | | | | (_| | | | \ \ __/ (_| (_) \ V / __/ | | |_| |
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\_____\__,_|_| |_| |_|\___|_| \___/\/ |_| |_|_| |_| |_|_|_| |_|\__, | |_| \_\___|\___\___/ \_/ \___|_| \__, |
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__/ | __/ |
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|___/ |___/
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|___/ |___/
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*/
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void pll_cc_init_pi_controller(pll_t* p, float bandwidth, float ko, float kd, float damping_factor)
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@ -1644,18 +1644,47 @@ void pll_cc(pll_t* p, complexf* input, float* output_dphase, complexf* output_nc
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}
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}
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void octave_plot_point_on_cplxsig(complexf* signal, int signal_size, int points_size, ...)
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{
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fprintf(stderr, "N = %d\nisig = [", signal_size);
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for(int i=0;i<signal_size;i++) fprintf(stderr, "%f ", iof(signal,i));
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fprintf(stderr, "]\nqsig = [");
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for(int i=0;i<signal_size;i++) fprintf(stderr, "%f ", qof(signal,i));
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fprintf(stderr, "]\nzsig = [0:N-1]\nplot3(isig,zsig,qsig,\"b-\",");
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int point_z;
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char point_color;
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va_list vl;
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va_start(vl,points_size);
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for(int i=0;i<points_size;i++)
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{
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point_z = va_arg(vl, int);
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point_color = va_arg(vl, int);
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fprintf(stderr, "[%f],[%d],[%f],\"%c.\"%c", iof(signal, point_z), point_z, qof(signal, point_z), point_color, (i<points_size-1)?',':' ');
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}
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va_end(vl);
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fprintf(stderr, ")");
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}
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timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q)
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{
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timing_recovery_state_t to_return;
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to_return.algorithm = algorithm;
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to_return.decimation_rate = decimation_rate;
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to_return.use_q = use_q;
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to_return.debug_phase = -1;
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return to_return;
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}
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void timing_recovery_trigger_debug(timing_recovery_state_t* state, int debug_phase)
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{
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state->debug_phase=debug_phase;
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}
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void timing_recovery_cc(complexf* input, complexf* output, int input_size, timing_recovery_state_t* state)
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{
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//We always assume that the input starts at center of the first symbol cross before the first symbol.
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//We always assume that the input starts at center of the first symbol cross before the first symbol.
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//Last time we consumed that much from the input samples that it is there.
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int current_bitstart_index = 0;
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int num_samples_bit = state->decimation_rate;
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@ -1669,18 +1698,26 @@ void timing_recovery_cc(complexf* input, complexf* output, int input_size, timin
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{
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if(current_bitstart_index + num_samples_halfbit * 3 >= input_size) break;
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output[si++] = input[current_bitstart_index + num_samples_halfbit];
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error = (
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iof(input, current_bitstart_index + num_samples_halfbit * 3) - iof(input, current_bitstart_index + num_samples_halfbit)
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error = (
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iof(input, current_bitstart_index + num_samples_halfbit * 3) - iof(input, current_bitstart_index + num_samples_halfbit)
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) * iof(input, current_bitstart_index + num_samples_halfbit * 2);
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if(state->use_q)
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if(state->use_q)
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{
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error += (
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qof(input, current_bitstart_index + num_samples_halfbit * 3) - qof(input, current_bitstart_index + num_samples_halfbit)
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error += (
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qof(input, current_bitstart_index + num_samples_halfbit * 3) - qof(input, current_bitstart_index + num_samples_halfbit)
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) * qof(input, current_bitstart_index + num_samples_halfbit * 2);
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error /= 2;
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}
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current_bitstart_index += num_samples_halfbit * 2 + (error)?((error>0)?1:-1):0;
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if(state->debug_phase == si)
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{
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state->debug_phase = -1;
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octave_plot_point_on_cplxsig(input+current_bitstart_index, state->decimation_rate*2,
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num_samples_halfbit * 1, 'r',
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num_samples_halfbit * 2, 'r',
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num_samples_halfbit * 3, 'r',
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0); //last argument is dummy, for the comma
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}
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current_bitstart_index += num_samples_halfbit * 2 + (error)?((error>0)?1:-1):0;
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}
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state->input_processed = current_bitstart_index;
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state->output_size = si;
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@ -1691,19 +1728,28 @@ void timing_recovery_cc(complexf* input, complexf* output, int input_size, timin
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{
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if(current_bitstart_index + num_samples_bit >= input_size) break;
|
||||
output[si++] = input[current_bitstart_index + num_samples_halfbit];
|
||||
error = (
|
||||
iof(input, current_bitstart_index + num_samples_quarterbit * 3) - iof(input, current_bitstart_index + num_samples_quarterbit)
|
||||
error = (
|
||||
iof(input, current_bitstart_index + num_samples_quarterbit * 3) - iof(input, current_bitstart_index + num_samples_quarterbit)
|
||||
); //* iof(input, current_bitstart_index + num_samples_halfbit); //I don't think we need the end of the Nutaq formula
|
||||
if(state->use_q)
|
||||
if(state->use_q)
|
||||
{
|
||||
error += qof(input, current_bitstart_index + num_samples_quarterbit * 3) - qof(input, current_bitstart_index + num_samples_quarterbit);
|
||||
error /= 2;
|
||||
}
|
||||
//Correction method #1: this version can only move a single sample in any direction
|
||||
//current_bitstart_index += num_samples_halfbit * 2 + (error)?((error<0)?1:-1):0;
|
||||
//current_bitstart_index += num_samples_halfbit * 2 + (error)?((error<0)?1:-1):0;
|
||||
//Correction method #2: this can move in proportional to the error
|
||||
if(error>2) error=2;
|
||||
if(error<-2) error=-2;
|
||||
if(state->debug_phase == si)
|
||||
{
|
||||
state->debug_phase = -1;
|
||||
octave_plot_point_on_cplxsig(input+current_bitstart_index, state->decimation_rate*2,
|
||||
num_samples_quarterbit * 1, 'r',
|
||||
num_samples_quarterbit * 2, 'r',
|
||||
num_samples_quarterbit * 3, 'r',
|
||||
0);
|
||||
}
|
||||
current_bitstart_index += num_samples_halfbit * 2 + num_samples_halfbit * (-error/2);
|
||||
}
|
||||
state->input_processed = current_bitstart_index;
|
||||
|
|
@ -1731,28 +1777,6 @@ char* timing_recovery_get_string_from_algorithm(timing_recovery_algorithm_t algo
|
|||
return "INVALID";
|
||||
}
|
||||
|
||||
/*
|
||||
in struct:
|
||||
char* debug_string;
|
||||
char* debug_string_end;
|
||||
int debug_string_length;
|
||||
int debug_mode;
|
||||
int debug_first_n_symbols;
|
||||
func:
|
||||
void timing_recovery_write_debug_string
|
||||
(
|
||||
int input,
|
||||
int input_length,
|
||||
int current_bitstart_index,
|
||||
int current_output_index,
|
||||
int current_p1_index,
|
||||
int current_p2_index,
|
||||
timing_recovery_state_t* state
|
||||
)
|
||||
{
|
||||
if(state->debug_string_end==state->debug_string+debug_string_length) return;
|
||||
}*/
|
||||
|
||||
|
||||
/*
|
||||
_____ _ _
|
||||
|
|
|
|||
|
|
@ -303,9 +303,12 @@ typedef struct timing_recovery_state_s
|
|||
int output_size;
|
||||
int input_processed;
|
||||
int use_q; //use both I and Q for calculating the error
|
||||
int debug_phase;
|
||||
} timing_recovery_state_t;
|
||||
|
||||
timing_recovery_state_t timing_recovery_init(timing_recovery_algorithm_t algorithm, int decimation_rate, int use_q);
|
||||
void timing_recovery_cc(complexf* input, complexf* output, int input_length, timing_recovery_state_t* state);
|
||||
timing_recovery_algorithm_t timing_recovery_get_algorithm_from_string(char* input);
|
||||
char* timing_recovery_get_string_from_algorithm(timing_recovery_algorithm_t algorithm);
|
||||
void timing_recovery_trigger_debug(timing_recovery_state_t* state, int debug_phase);
|
||||
void octave_plot_point_on_cplxsig(complexf* signal, int signal_size, int points_size, ...);
|
||||
|
|
|
|||
Loading…
Reference in a new issue