# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1540483620 -10800
# Node ID eb6dafdd36dc19e364e89daa1559a0d1d525a8a4
# Parent  c8c698bb99b63f94d1a8288364d0a34658ec9dcf
Add option -C for controlling output file compression (PNG and IFF for now) in gfxconv.

diff -r c8c698bb99b6 -r eb6dafdd36dc tools/gfxconv.c
--- a/tools/gfxconv.c	Thu Oct 25 18:55:38 2018 +0300
+++ b/tools/gfxconv.c	Thu Oct 25 19:07:00 2018 +0300
@@ -37,6 +37,13 @@
 };
 
 
+enum
+{
+    FCMP_NONE = 0,
+    FCMP_BEST = 9
+};
+
+
 static const char *formatTypeList[FFMT_LAST] =
 {
     "AUTO",
@@ -126,6 +133,7 @@
     .planar = FALSE,
     .paletted = FALSE,
     .format = 0,
+    .compression = FCMP_BEST,
 };
 
 static const DMOptArg optList[] =
@@ -148,6 +156,7 @@
     { 13, 'N', "nplanes",       "# of bitplanes (some output formats)", OPT_ARGREQ },
     { 18, 'B', "bpp",           "Bits per pixel (some output formats)", OPT_ARGREQ },
     { 14, 'I', "interleave",    "Interleaved/planar output (some output formats)", OPT_NONE },
+    { 20, 'C', "compress",      "Use compression -C <level 0-9>, 0 = disable, default is 9", OPT_ARGREQ },
     { 16, 'R', "remap",         "Remap output image colors (-R <(#RRGGBB|index):index>[,<..>][+remove] | -R @map.txt[+remove])", OPT_ARGREQ },
 };
 
@@ -874,6 +883,17 @@
             }
             break;
 
+        case 20:
+            if (!dmGetIntVal(optArg, &tmpUInt, NULL) ||
+                tmpUInt > FCMP_BEST)
+            {
+                dmErrorMsg("Invalid compression setting '%s' [%d .. %d]\n",
+                    optArg, FCMP_NONE, FCMP_BEST);
+                return FALSE;
+            }
+            optSpec.compression = tmpUInt;
+            break;
+
         default:
             dmErrorMsg("Unknown option '%s'.\n", currArg);
             return FALSE;
@@ -1377,7 +1397,6 @@
             break;
 
         case DM_IMGFMT_IFF:
-            spec->compression = 1;
             spec->nplanes = 0;
             for (int n = 8; n >= 0;)
             {
diff -r c8c698bb99b6 -r eb6dafdd36dc tools/libgfx.c
--- a/tools/libgfx.c	Thu Oct 25 18:55:38 2018 +0300
+++ b/tools/libgfx.c	Thu Oct 25 19:07:00 2018 +0300
@@ -525,6 +525,8 @@
             goto error;
     }
 
+    png_set_compression_level(png_ptr, spec->compression);
+
     png_set_IHDR(png_ptr, info_ptr,
         img->width * spec->scaleX,
         img->height * spec->scaleY,