--- a/tools/gfxconv.c	Sun Jul 13 17:42:40 2014 +0300
+++ b/tools/gfxconv.c	Sun Jul 13 17:44:55 2014 +0300
@@ -117,8 +117,9 @@
         optOutSubFormat = IMGFMT_PNG,
         optItemCount = -1,
         optPlanedWidth = 1,
-        optForcedFormat = -1;
-int     optInSkip = 0;
+        optForcedFormat = -1,
+        optInSkip = 0;
+
 BOOL    optInMulticolor = FALSE,
         optSequential = FALSE,
         optRemapColors = FALSE,
@@ -141,7 +142,7 @@
     {  0, '?', "help",         "Show this help", OPT_NONE },
     { 15, 'v', "verbose",      "Increase verbosity", OPT_NONE },
     {  3, 'o', "output",       "Output filename", OPT_ARGREQ },
-    {  1, 'i', "informat",     "Set input format ([s]prite, [c]har, [b]itmap, [i]mage)", OPT_ARGREQ },
+    {  1, 'i', "informat",     "Set input format (sprite[:mc:sc], char[:mc|sc], bitmap[:<bformat>], image)", OPT_ARGREQ },
     {  2, 'm', "multicolor",   "Input is multicolor / output in multicolor", OPT_NONE },
     {  4, 's', "skip",         "Skip bytes in input", OPT_ARGREQ },
     {  5, 'f', "format",       "Output format (see --formats)", OPT_ARGREQ },
@@ -150,7 +151,6 @@
     {  6, 'c', "colormap",     "Color mappings (see below for information)", OPT_ARGREQ },
     {  7, 'n', "numitems",     "How many 'items' to view (default: all)", OPT_ARGREQ },
     {  9, 'S', "scale",        "Scale output by x (image output only)", OPT_ARGREQ },
-    { 10, 'b', "bformat",      "Force input bitmap format (see below)", OPT_ARGREQ },
     { 11, 'w', "width",        "Item width (number of items per row, min 1)", OPT_ARGREQ },
     { 12, 'P', "paletted",     "Use indexed/paletted output (png, pcx output only)", OPT_NONE },
     { 13, 'B', "bplanes",      "Bits per pixel OR # of bitplanes (certain output formats)", OPT_ARGREQ },
@@ -185,7 +185,7 @@
     "\n"
     "(Not all input->output combinations are actually supported.)\n"
     "\n"
-    "Available bitmap formats:\n"
+    "Available bitmap formats (-f bitmap:<bformat>):\n"
     "  Ext | Type            | Description\n"
     "------+-----------------+-------------------------------------\n"
     );
@@ -519,6 +519,38 @@
                         dmError("Invalid input format '%s'.\n", optArg);
                         return FALSE;
                 }
+            
+                char *tmp = strchr(optArg, ':');
+                if (tmp != NULL)
+                {
+                    tmp++;
+                    switch (optInFormat)
+                    {
+                        case FFMT_SPRITE:
+                        case FFMT_CHAR:
+                            if (strcasecmp(tmp, "mc") == 0)
+                                optInMulticolor = TRUE;
+                            else
+                            if (strcasecmp(tmp, "sc") == 0)
+                                optInMulticolor = FALSE;
+                            else
+                            {
+                                dmError("Invalid input subformat for sprite/char: '%s', should be 'mc' or 'sc'.\n",
+                                    tmp);
+                                return FALSE;
+                            }
+                            break;
+                        
+                        case FFMT_BITMAP:
+                            if (!dmGetC64FormatByExt(tmp, &optInFormat, &optInSubFormat))
+                            {
+                                dmError("Invalid bitmap subformat '%s', see format list for valid bformats.\n",
+                                    tmp);
+                                return FALSE;
+                            }
+                            break;
+                    }
+                }
             }
             break;