Lines Matching full:alpha
56 BOOL alpha);
68 BOOL alpha = FALSE;
84 alpha = TRUE;
89 fprintf (stderr, "Error: can not create alpha-channel file %s\n",
147 if (png2pnm (fp_rd, fp_wr, fp_al, raw, alpha) == FALSE)
158 /* close alpha file */
159 if (alpha)
185 " -a[lpha] <file>.pgm write PNG alpha channel as pgm-file\n");
194 volatile BOOL raw, BOOL alpha)
264 /* transform transparency maps into full alpha-channel */
299 /* calculate new number of channels and store alpha-presence */
312 /* check if alpha is expected to be present in file */
313 if (alpha && !alpha_present)
316 fprintf (stderr, "Error: PNG-file doesn't contain alpha channel\n");
368 /* write header of PGM file with alpha channel */
370 if ((alpha) &&
400 if (!alpha)
402 pix_ptr++; /* alpha */
406 else /* output alpha-channel as pgm file */
