main.c

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

#include "gmmk.h"

unsigned int setBits(unsigned int bits);
int readNumber();

int main(int argc, char **argv) {
    int i;
    unsigned int j;
    GMMKState *s;
    unsigned int argInt1, argInt2, argInt3;
    GMMKColor c[GMMK_MAX_KEY];

    unsigned int activeDevs;
    unsigned int devMask;

    for (i = 1; i < argc; i++){
                if(strcmp(argv[i], "help") == 0) {
                    char *help = "Commands:\n"
                            "   help - Shows this list of commands.\n"
                            "   devmask <mask> - Set the mask of detected devices which should be controlled by the following commands. By default, all are selected.\n"
                            "   mode <num> - Set the mode. 20 is the mode for freely programming the keys, and the highest meaningful value.\n"
                            "   brightness <num> - Set the brightness.  0 - 4 are meaningful.\n"
                            "   delay <num> - Set the delay between animation frames. Very large values seem to be meaningful. 0 - 255\n"
                            "   left - Set animation to proceed towards the left.\n"
                            "   right - Set animation to proceed towards the right.\n"
                            "   colorful - Turn on 'colorful' mode.\n"
                            "   single - Turn on single color (not colorful) mode.\n"
                            "   rate - Adjust polling rate. Not really tested. 0:125, 1:250, 2:500, 3:1000, 4+:???\n"
                            "   color <r> <g> <b> - Set color for single color mode. 0 - 255\n"
                            "   keys - Read in human readable numbers from standard input and set key colors.\n"
                            "       Values may be separated by any whitespace.  Seems to work by feeding in a\n"
                            "       file from standard input or with a here word/document.\n"
                            "       first value - Offset key to start programming colors.\n"
                            "       second value - Number of values to follow.\n"
                            "       N additional triplets - R, G and B values for each key color.  0 - 255\n";
                    fprintf(stderr, help);
                    exit (EXIT_SUCCESS);
                }
            }

    s = gmmk_open();
    if(s == NULL) {
        fprintf(stderr, "Failed to open any device.\n");
        exit(EXIT_SUCCESS);
    }

    fprintf(stderr, "Found %u devices.\n", s->devices);
    activeDevs = devMask = setBits(s->devices);

    for(i = 1; i < argc; i++) {
        if(strcmp(argv[i], "devmask") == 0) {
            if(i < argc - 1) {
                i++;
                devMask = atoi(argv[i]);
                if((activeDevs & devMask & activeDevs) == 0) {
                    fprintf(stderr, "WARNING: No devices selected!\n");
                }
            }
        } else if(strcmp(argv[i], "mode") == 0) {
            if(i < argc - 1) {
                i++;
                argInt1 = atoi(argv[i]);
                for(j = 0; j < GMMK_MAX_DEVS; j++) {
                    if(activeDevs & devMask & (1 << j)) {
                        gmmk_setMode(s, j, argInt1);
                    }
                }
            }
        } else if(strcmp(argv[i], "brightness") == 0) {
            if(i < argc - 1) {
                i++;
                argInt1 = atoi(argv[i]);
                for(j = 0; j < GMMK_MAX_DEVS; j++) {
                    if(activeDevs & devMask & (1 << j)) {
                        gmmk_setBrightness(s, j, argInt1);
                    }
                }
            }
        } else if(strcmp(argv[i], "delay") == 0) {
            if(i < argc - 1) {
                i++;
                argInt1 = atoi(argv[i]);
                for(j = 0; j < GMMK_MAX_DEVS; j++) {
                    if(activeDevs & devMask & (1 << j)) {
                        gmmk_setDelay(s, j, argInt1);
                    }
                }
            }
        } else if(strcmp(argv[i], "left") == 0) {
            for(j = 0; j < GMMK_MAX_DEVS; j++) {
                if(activeDevs & devMask & (1 << j)) {
                    gmmk_setDirLeft(s, j);
                }
            }
        } else if(strcmp(argv[i], "right") == 0) {
            for(j = 0; j < GMMK_MAX_DEVS; j++) {
                if(activeDevs & devMask & (1 << j)) {
                    gmmk_setDirRight(s, j);
                }
            }
        } else if(strcmp(argv[i], "colorful") == 0) {
            for(j = 0; j < GMMK_MAX_DEVS; j++) {
                if(activeDevs & devMask & (1 << j)) {
                    gmmk_setColorful(s, j);
                }
            }
        } else if(strcmp(argv[i], "single") == 0) {
            for(j = 0; j < GMMK_MAX_DEVS; j++) {
                if(activeDevs & devMask & (1 << j)) {
                    gmmk_unsetColorful(s, j);
                }
            }
        } else if(strcmp(argv[i], "rate") == 0) {
            if(i < argc - 1) {
                i++;
                argInt1 = atoi(argv[i]);
                for(j = 0; j < GMMK_MAX_DEVS; j++) {
                    if(activeDevs & devMask & (1 << j)) {
                        gmmk_setRate(s, j, argInt1);
                    }
                }
            }
        } else if(strcmp(argv[i], "color") == 0) {
            if(i < argc - 3) {
                i++;
                argInt1 = atoi(argv[i]);
                i++;
                argInt2 = atoi(argv[i]);
                i++;
                argInt3 = atoi(argv[i]);
                for(j = 0; j < GMMK_MAX_DEVS; j++) {
                    if(activeDevs & devMask & (1 << j)) {
                        gmmk_setAnimationColor(s, j, argInt1, argInt2, argInt3);
                    }
                }
            }
        } else if(strcmp(argv[i], "keys") == 0) {
            argInt1 = readNumber();
            argInt2 = readNumber();
            if(argInt1 + argInt2 > GMMK_MAX_KEY) {
                fprintf(stderr, "Count too high.\n");
                break;
            }
            for(j = 0; j < argInt2; j++) {
                c[j].r = readNumber();
                c[j].g = readNumber();
                c[j].b = readNumber();
            }
            for(j = 0; j < GMMK_MAX_DEVS; j++) {
                if(activeDevs & devMask & (1 << j)) {
                    gmmk_setKeys(s, j, argInt1, argInt2, c);
                }
            }
        }
    }

    gmmk_close(s);

    exit(EXIT_SUCCESS);
}

unsigned int setBits(unsigned int bits) {
    unsigned int val = 0;
    for(; bits > 0; bits--) {
        val <<= 1;
        val |= 1;
    }

    return(val);
}

int readNumber() {
    char buffer[4];
    int c;
    unsigned int i;

    /* gross */
    for(c = getchar();
        c == ' ' ||
        c == '\r' ||
        c == '\n' ||
        c == '\t';
        c = getchar());
    ungetc(c, stdin);

    for(i = 0; i < sizeof(buffer); i++) {
        c = getchar();
        if(c == EOF) {
            buffer[i] = ' ';
            break;
        }
        buffer[i] = c;
        if(c == ' ' ||
           c == '\r' ||
           c == '\n' ||
           c == '\t') {
            break;
        }
    }
    if((i == sizeof(buffer)) ||
       ((i == sizeof(buffer) - 1) &&
        !(buffer[i] == ' ' ||
          buffer[i] == '\r' ||
          buffer[i] == '\n' ||
          buffer[i] == '\t'))) {
        return(0);
    }
    buffer[i] = '\0';

    return(atoi(buffer));
}