Function pam_acolorhashtoacolorhist

mapquantization.c:703–732

( acht, maxacolors )

static acolorhist_vector
pam_acolorhashtoacolorhist( acht, maxacolors )
acolorhash_table acht;
int maxacolors;
{
    acolorhist_vector achv;
    acolorhist_list achl;
    int i, j;

    /* Now collate the hash table into a simple acolorhist array. */
    achv = (acolorhist_vector) malloc( maxacolors * sizeof(struct acolorhist_item) );
    /* (Leave room for expansion by caller.) */
    if ( achv == (acolorhist_vector) 0 ) {
        fprintf( stderr, "  out of memory generating histogram\n" );
        exit(9);
    }

    /* Loop through the hash table. */
    j = 0;
    for ( i = 0; i < HASH_SIZE; ++i )
        for ( achl = acht[i]; achl != (acolorhist_list) 0; achl = achl->next )
        {
            /* Add the new entry. */
            achv[j] = achl->ch;
            ++j;
        }

    /* All done. */
    return achv;
}