IRIX 6.2 Applications 1996 May/SGI IRIX 6.2 Applications 1996 May.iso/dist/impr_dev.idb/usr/impressario/src/examples/libimp/impstat.c.z/impstat.c

C/C++ Source or Header | 1996-05-07 | 4.8 KB | 195 lines

/**************************************************************************
 *
 *           Copyright (c)    1993 Silicon Graphics, Inc.
 *            All Rights Reserved
 *
 *       THIS    IS UNPUBLISHED PROPRIETARY SOURCE CODE OF SGI
 *
 * The copyright notice above does not evidence any actual of intended
 * publication of such source code, and is an unpublished work by Silicon
 * Graphics, Inc. This material contains CONFIDENTIAL INFORMATION that is
 * the property of Silicon Graphics, Inc. Any use, duplication or
 * disclosure not specifically authorized by Silicon Graphics is strictly
 * prohibited.
 *
 * RESTRICTED RIGHTS LEGEND:
 *
 * Use, duplication or disclosure by the Government is subject to
 * restrictions as set forth in subdivision (c)(1)(ii) of the Rights in
 * Technical Data and Computer Software clause at DFARS 52.227-7013,
 * and/or in similar or successor clauses in the FAR, DOD or NASA FAR
 * Supplement. Unpublished - rights reserved under the Copyright Laws of
 * the United States. Contractor is SILICON GRAPHICS, INC., 2011 N.
 * Shoreline Blvd., Mountain View, CA 94039-7311
 **************************************************************************
 *
 * File: impstat.c
 *
 * Description: Prints to stdout the SGI image header information found
 *    in the specified image file(s).
 *
 *    Usage: imstat [-o offset] image ...
 *
 *    Where:
 *
 *    -o    Specifies an offset into the file where the SGI image
 *        starts. Default is 0.
 *
 **************************************************************************/


#ident "$Revision: 1.2 $"


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "imp.h"


/* Local functions */

static void usage(char *progName);


/**************************************************************************
 *
 * Function: main
 *
 * Description: Program entry point
 *
 * Parameters:
 *    argc (I) - number of command line arguments
 *    argv (I) - command line arguments
 *
 * Return: 0 if no errors, 1 otherwise.
 *
 **************************************************************************/

int main(int argc, char *argv[])
{
    IMPImage *image;
    register int i, ch;
    char *fname, *pname;
    off_t offset = 0;

    /*
     * Extract the program basename
     */
    pname = ((pname = strrchr(argv[0], '/')) == NULL) ? argv[0]: pname + 1;

    /*
     * Handle command line options
     */
    while ((ch = getopt(argc, argv, "o:")) != EOF) {
        switch (ch) {
            case 'o':
                offset = atoi(optarg);
                break;
            case '?':
            default:
                usage(pname);
                exit(1);
        }
    }

    /*
     * Check the argument count
     */
    if (argc - optind < 1) {
        usage(pname);
        exit(1);
    }

    /*
     * Cycle through each image printing information
     */
    for (i = optind; i < argc; i++) {
    /*
     * Open the image for reading
     */
    if ((image = impOpenExt(argv[i], "r", offset, IMPNoCache)) == NULL) {
        impPerror(pname);
        exit(1);
    }

    /*
     * Extract the file's basename
     */
    fname = ((fname = strrchr(argv[i], '/')) == NULL) ? argv[i]: fname + 1;

    /*
     * Print header information
     */
    printf("Filename:        %s\n", fname);
    printf("Header Name:     '%s'\n", impName(image));
    printf("X Size:          %d\n", impXSize(image));
    printf("Y Size:          %d\n", impYSize(image));
    printf("Num. Channels:   %d\n", impNumChannels(image));
    printf("Dimension:       %d\n", impDimension(image));
    printf("Min Value:       %d\n", impMinValue(image));
    printf("Max Value:       %d\n", impMaxValue(image));
    printf("Bytes Per Pixel: %d\n", impRasterBPP(image));
    printf("Raster Encoding: %s\n",
            (impRasterEncoding(image) == IMP_RASTER_ENC_RLE) ?
            "RLE": "VERBATIM");
    printf("Image Type:      ");
    switch (impImageType(image)) {
        case IMP_IMAGE_NORMAL:
        printf("NORMAL\n");
        break;
        case IMP_IMAGE_DITHERED:
        printf("DITHERED\n");
        break;
        case IMP_IMAGE_SCREEN:
        printf("SCREEN\n");
        break;
        case IMP_IMAGE_COLORMAP:
        printf("COLORMAP\n");
        break;
        default:
        printf("%8X\n", impImageType(image));
        break;
    }
    if (argc > 2)
        printf("\n");

    /*
     * Close the image
     */
    if (impClose(image) < 0) {
        impPerror(pname);
        exit(1);
    }
    }

    return 0;
}


/*
 ==========================================================================
                LOCAL FUNCTIONS
 ==========================================================================
*/


/**************************************************************************
 *
 * Function: usage
 *
 * Description: Prints the program usage to stderr.
 *
 * Parameters:
 *    progName (I) - name of program
 *
 * Return: none
 *
 **************************************************************************/

static void usage(char *progName)
{
    fprintf(stderr, "Usage: %s [-o offset] image ...\n", progName);
}