Changeset 2263 for libpipi/trunk/genethumbTweet

Timestamp:

Mar 11, 2008, 3:56:42 PM (15 years ago)

Author:

Sam Hocevar

Message:

• Implemented 24 -> 16 bpp dithering.
• Added the --bpp flag to genethumb.

File:

• libpipi/trunk/genethumb/genethumb.c (modified) (4 diffs)

libpipi/trunk/genethumb/genethumb.c

@@ -28 +28 @@
     pipi_image_t *src, *dst;
 
-    int i, w = 0, h = 0;
+    int i, w = 0, h = 0, bpp = 24;
 
     for(;;)
@@ -36 +36 @@
         {
             { "geometry",    1, NULL, 'g' },
+            { "bpp",         1, NULL, 'b' },
         };
-        int c = mygetopt(argc, argv, "g:", long_options, &option_index);
+        int c = mygetopt(argc, argv, "g:b:", long_options, &option_index);
 
         if(c == -1)
@@ -44 +45 @@
         switch(c)
         {
+        case 'b':
+            bpp = atoi(myoptarg);
+            if(bpp != 32 && bpp != 24 && bpp != 16)
+            {
+                fprintf(stderr, "%s: invalid bpp -- %s\n", argv[0], myoptarg);
+                return EXIT_FAILURE;
+            }
+            break;
         case 'g':
             w = atoi(myoptarg);
@@ -66 +75 @@
     src = pipi_load(srcname);
     dst = pipi_resize(src, w, h);
+    if(bpp == 16)
+        pipi_dither_24to16(dst);
     pipi_save(dst, dstname);
     pipi_free(src);