# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1588027231 -10800
# Node ID 2d60e112255ecddb6b539bc44aeec3086c899bc6
# Parent  7151597d8ec6f3384ff913772bec540fcbcf6de6
Add support for converting palette to another palette format, or to a supported image format.

diff -r 7151597d8ec6 -r 2d60e112255e tools/gfxconv.c
--- a/tools/gfxconv.c	Tue Apr 28 01:39:29 2020 +0300
+++ b/tools/gfxconv.c	Tue Apr 28 01:40:31 2020 +0300
@@ -2679,10 +2679,46 @@
 
                 dmf_close(fp);
 
-                if (res != DMERR_OK || optPaletteData == NULL)
+                if (res != DMERR_OK)
+                {
+                    dmErrorMsg("Palette could not be read.\n");
                     goto exit;
-
-                res = dmWritePalette(optOutFilename, optPaletteData, &dmPaletteFormatList[optOutFormat]);
+                }
+            }
+
+            if (optPaletteData == NULL)
+                goto exit;
+
+            switch (optOutType)
+            {
+                case FFMT_PALETTE:
+                    res = dmWritePalette(optOutFilename, optPaletteData, &dmPaletteFormatList[optOutFormat]);
+                    break;
+
+                case FFMT_IMAGE:
+                    // Allocate image
+                    if ((inImage = dmImageAlloc(16, 16, DM_PIXFMT_PALETTE,
+                        dmGetNPlanesFromNColors(optPaletteData->ncolors))) == NULL)
+                    {
+                        res = dmError(DMERR_MALLOC,
+                            "Could not allocate memory for image.\n");
+                        goto exit;
+                    }
+
+                    if ((res = dmPaletteCopy(&inImage->pal, optPaletteData)) != DMERR_OK)
+                    {
+                        dmErrorMsg("Could not allocate image palette: %s\n",
+                            dmErrorStr(res));
+                        goto exit;
+                    }
+
+                    res = dmWriteImage(optOutFilename, inImage, &optSpec,
+                        &dmImageFormatList[optOutFormat]);
+                    break;
+
+                default:
+                    dmErrorMsg("Unsupported output format for palette conversion.\n");
+                    break;
             }
             break;