# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1503105902 -10800
# Node ID e03f20d0f7859b369217add82ee91fdcc3bc97af
# Parent  fd442faa705fd6453208a6e7b8c3ceed7f789ebf
Constify.

diff -r fd442faa705f -r e03f20d0f785 src/libgfx.c
--- a/src/libgfx.c	Sat Aug 19 03:57:15 2017 +0300
+++ b/src/libgfx.c	Sat Aug 19 04:25:02 2017 +0300
@@ -133,7 +133,7 @@
 }
 
 
-int dmWriteImageData(DMImage *img, void *cbdata, int (*writeRowCB)(void *, Uint8 *, size_t), const DMImageConvSpec *spec)
+int dmWriteImageData(DMImage *img, void *cbdata, int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageConvSpec *spec)
 {
     int x, y, yscale, xscale, res = 0, rowSize, rowWidth;
     Uint8 *row = NULL;
@@ -329,7 +329,7 @@
 }
 
 
-static int dmWritePPMRow(void *cbdata, Uint8 *row, size_t len)
+static int dmWritePPMRow(void *cbdata, const Uint8 *row, const size_t len)
 {
     if (fwrite(row, sizeof(Uint8), len, (FILE *) cbdata) == len)
         return DMERR_OK;
@@ -376,7 +376,7 @@
 
 
 #ifdef DM_USE_LIBPNG
-static int dmWritePNGRow(void *cbdata, Uint8 *row, size_t len)
+static int dmWritePNGRow(void *cbdata, const Uint8 *row, const size_t len)
 {
     png_structp png_ptr = cbdata;
     (void) len;
@@ -749,7 +749,7 @@
 
 // Returns one byte from row buffer (of length len) at offset soffs,
 // OR zero if the offset is outside buffer.
-static inline Uint8 dmPCXGetByte(Uint8 *row, const size_t len, const size_t soffs)
+static inline Uint8 dmPCXGetByte(const Uint8 *row, const size_t len, const size_t soffs)
 {
     return (soffs < len) ? row[soffs] : 0;
 }
@@ -793,7 +793,7 @@
 }
 
 
-static int dmWritePCXRow(void *cbdata, Uint8 *row, size_t len)
+static int dmWritePCXRow(void *cbdata, const Uint8 *row, const size_t len)
 {
     DMPCXData *pcx = (DMPCXData *) cbdata;
     int err;
diff -r fd442faa705f -r e03f20d0f785 src/libgfx.h
--- a/src/libgfx.h	Sat Aug 19 03:57:15 2017 +0300
+++ b/src/libgfx.h	Sat Aug 19 04:25:02 2017 +0300
@@ -104,7 +104,7 @@
 BOOL dmCompareColor(const DMColor *c1, const DMColor *c2, BOOL alpha);
 
 
-int dmWriteImageData(DMImage *img, void *cbdata, int (*writeRowCB)(void *, Uint8 *, size_t), const DMImageConvSpec *spec);
+int dmWriteImageData(DMImage *img, void *cbdata, int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageConvSpec *spec);
 
 int dmWriteIFFMasterRAWPalette(FILE *fp, DMImage *img, int ncolors, const char *indent, const char *type);
 int dmWriteRAWImageFILE(FILE *fp, DMImage *img, const DMImageConvSpec *spec);