#include <stdio.h>
#include <string.h>
#include <math.h>

#define VALUE_PI 3.14592
#define CHAR_PER_LINE 80

int main(int argc, char* argv[])
{
    int sample_count = 360, sample_bits = 8;
    int sample_peak, loop, test, cols;
    char *pcheck, bufftext[64];
    double temp;

    if(argc>1)
    {
        for(loop=1;loop<argc;loop++)
        {
            /* check for command line options */
            if(argv[loop][0]=='-'&&argv[loop][1]=='-')
            {
                pcheck = &argv[loop][2];
                if(strcmp(pcheck,"sample")==0)
                {
                    loop++;
                    if(loop==argc)
                    {
                        printf("Using %d as sample count.\n",sample_count);
                    }
                    else
                    {
                        sample_count = atoi(argv[loop]);
                    }
                }
                else if(strcmp(pcheck,"bits")==0)
                {
                    loop++;
                    if(loop==argc)
                    {
                        printf("Using %d as sample bitsize.\n",sample_bits);
                    }
                    else
                    {
                        sample_bits = atoi(argv[loop]);
                    }
                }
            }
            else
            {
                printf("Unknown command '%s'!\n",argv[loop]);
            }
        }
    }

    sample_peak = (int)pow(2,sample_bits)-1;
    printf("/* Sample range is between 0 and %d inclusive */\n",sample_peak);
    printf("/* Time range is in [0,2PI) */\n");
    printf("int sinedata[%d] = {\n",sample_count);
    for(loop=0,cols=0;loop<sample_count;loop++)
    {
        temp = sample_peak*(sin((double)loop*2.0*VALUE_PI/sample_count)+1)/2.0;
        test = (int)temp;
        if(temp-(double)test>0.5) test++;
        sprintf(bufftext,"%d",test);
        if(loop<sample_count-1) sprintf(bufftext,"%s,",bufftext);
        cols += strlen(bufftext);
        if(cols>CHAR_PER_LINE) { printf("\n"); cols = strlen(bufftext); }
        printf("%s",bufftext);
    }
    printf("\n};\n");

    return 0;
}