Example #1
0
static void
extractOneImage(FILE * const infileP,
                FILE * const outfileP) {

    struct pam inpam;
    struct pam outpam;
    enum pm_check_code checkRetval;
    
    unsigned int row;
    tuple * tuplerow;

    pnm_readpaminit(infileP, &inpam, PAM_STRUCT_SIZE(tuple_type));

    pnm_checkpam(&inpam, PM_CHECK_BASIC, &checkRetval);

    outpam = inpam;
    outpam.file = outfileP;

    pnm_writepaminit(&outpam);

    tuplerow = pnm_allocpamrow(&inpam);
    for (row = 0; row < inpam.height; ++row) {
        pnm_readpamrow(&inpam, tuplerow);
        pnm_writepamrow(&outpam, tuplerow);
    }
    pnm_freepamrow(tuplerow);
}
Example #2
0
static void
extractOneImage(FILE * const infileP,
                FILE * const outfileP) {
/*----------------------------------------------------------------------------
  Copy a complete image from input stream *infileP to output stream
  *outfileP.

  But if outfileP == NULL, just read the image and discard it.
-----------------------------------------------------------------------------*/
    struct pam inpam;
    struct pam outpam;
    enum pm_check_code checkRetval;
    
    unsigned int row;
    tuple * tuplerow;

    pnm_readpaminit(infileP, &inpam, PAM_STRUCT_SIZE(tuple_type));

    pnm_checkpam(&inpam, PM_CHECK_BASIC, &checkRetval);

    outpam = inpam;
    outpam.file = outfileP;

    if (outfileP)
        pnm_writepaminit(&outpam);

    tuplerow = pnm_allocpamrow(&inpam);
    for (row = 0; row < inpam.height; ++row) {
        pnm_readpamrow(&inpam, tuplerow);
        if (outfileP)
            pnm_writepamrow(&outpam, tuplerow);
    }
    pnm_freepamrow(tuplerow);
}
Example #3
0
static void
doOneImage(const char * const name,
           unsigned int const imageDoneCount,
           FILE *       const fileP,
           bool         const allimages,
           bool         const justCount,
           bool         const wantComments,
           bool *       const eofP) {
                    
    struct pam pam;
    const char * comments;
    enum pm_check_code checkRetval;

    pam.comment_p = &comments;

    pnm_readpaminit(fileP, &pam, PAM_STRUCT_SIZE(comment_p));
        
    if (!justCount) {
        if (allimages)
            printf("%s:\tImage %d:\t", name, imageDoneCount);
        else 
            printf("%s:\t", name);
            
        dumpHeader(pam);
        if (wantComments)
            dumpComments(comments);
    }
    strfree(comments);

    pnm_checkpam(&pam, PM_CHECK_BASIC, &checkRetval);
    if (allimages) {
        tuple * tuplerow;
        unsigned int row;
        
        tuplerow = pnm_allocpamrow(&pam);
        
        for (row = 0; row < pam.height; ++row) 
            pnm_readpamrow(&pam, tuplerow);
        
        pnm_freepamrow(tuplerow);
        
        pnm_nextimage(fileP, eofP);
    }
}