GraphicsMagick: coders/topol.c Improve header debug info.

changeset 805904a49687 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=805904a49687
summary: coders/topol.c Improve header debug info.

diffstat:

 coders/topol.c |  20 ++++++++++++++++++--
 1 files changed, 18 insertions(+), 2 deletions(-)

diffs (43 lines):

diff -r 137bb560a079 -r 805904a49687 coders/topol.c
--- a/coders/topol.c	Sun Apr 30 17:59:20 2023 +0200
+++ b/coders/topol.c	Sun Apr 30 18:11:46 2023 +0200
@@ -283,6 +283,22 @@
 }
 
 
+static const char *ExplainFileType(magick_uint16_t FileType)
+{
+  switch(FileType)
+  {
+    case 0: return "binary";
+    case 1: return "8 bits gray";
+    case 2: return "8 bits + PALETTE";
+    case 3: return "4 bits gray";
+    case 4: return "4 bits + PALETTE";
+    case 5: return "24 bits RGB";
+    case 6: return "16 bits";
+    case 7: return "32 bits";
+  }
+  return "Unknown - invalid";
+}
+
 static void LogHeaderTopoL(RasHeader *pHeader)
 {
  if(pHeader==NULL) return;
@@ -290,14 +306,14 @@
                         "TopoL Header:\n"
                         "    Rows:		%u\n"
                         "    Columns:		%u\n"
-                        "    FileType:		%u\n"
+                        "    FileType:		%u %s\n"
                         "    Zoom:		%u\n"
                         "    Version:		%u\n"
                         "    Compression:	%u\n"
                         "    Status:		%u",
                                pHeader->Rows,
 			       pHeader->Cols,
-                               pHeader->FileType,
+                               pHeader->FileType, ExplainFileType(pHeader->FileType),
 			       pHeader->Zoom,
                                pHeader->Version,
 			       pHeader->Komprese,