*** empty log message ***

2 files changed, 24 insertions, 17 deletions

diff --git a/src/lua5/imlua_image.c b/src/lua5/imlua_image.c
index 32a3080..dcb1647 100644
--- a/src/lua5/imlua_image.c
+++ b/src/lua5/imlua_image.c
@@ -2,7 +2,7 @@
  * \brief IM Lua 5 Binding
  *
  * See Copyright Notice in im_lib.h
- * $Id: imlua_image.c,v 1.6 2009/12/25 22:43:50 scuri Exp $
+ * $Id: imlua_image.c,v 1.7 2010/01/06 20:16:29 scuri Exp $
  */
 
 #include <string.h>
@@ -175,13 +175,16 @@ static int imluaImageCopyPlane(lua_State *L)
   int src_plane = luaL_checkint(L, 2);
   imImage* dst_image = imlua_checkimage(L, 3);
   int dst_plane = luaL_checkint(L, 4);
+  int src_depth, dst_depth;
 
   imlua_match(L, src_image, dst_image);
 
-  if (src_plane < 0 || src_plane >= src_image->depth)
+  src_depth = src_image->has_alpha? src_image->depth+1: src_image->depth;
+  if (src_plane < 0 || src_plane >= src_depth)
     luaL_argerror(L, 2, "invalid source channel, out of bounds");
 
-  if (dst_plane < 0 || dst_plane >= dst_image->depth)
+  dst_depth = dst_image->has_alpha? dst_image->depth+1: dst_image->depth;
+  if (dst_plane < 0 || dst_plane >= dst_depth)
     luaL_argerror(L, 4, "invalid destiny channel, out of bounds");
 
   imImageCopyPlane(src_image, src_plane, dst_image, dst_plane);
@@ -773,13 +776,14 @@ static int imluaImage_tostring (lua_State *L)
   if (*image_p)
   {
     imImage *image = *image_p;
-    lua_pushfstring(L, "imImage(%p) [width=%d,height=%d,color_space=%s,data_type=%s,depth=%d]", 
+    lua_pushfstring(L, "imImage(%p) [width=%d,height=%d,color_space=%s,data_type=%s,depth=%d,has_alpha=%d]", 
       image_p,
       image->width, 
       image->height,
       imColorModeSpaceName(image->color_space),
       imDataTypeName(image->data_type),
-      image->depth
+      image->depth,
+      image->has_alpha
     );
   }
   else
@@ -978,7 +982,8 @@ static int imluaImage_index (lua_State *L)
     int channel = luaL_checkint(L, 2);
 
     /* create channel */
-    if (channel < 0 || channel >= image->depth)
+    int depth = image->has_alpha? image->depth+1: image->depth;
+    if (channel < 0 || channel >= depth)
       luaL_argerror(L, 2, "invalid channel, out of bounds");
 
     imlua_newimagechannel(L, image, channel);
diff --git a/src/lua5/imlua_process.c b/src/lua5/imlua_process.c
index 863c1d6..198d0e5 100644
--- a/src/lua5/imlua_process.c
+++ b/src/lua5/imlua_process.c
@@ -2,7 +2,7 @@
  * \brief IM Lua 5 Binding
  *
  * See Copyright Notice in im_lib.h
- * $Id: imlua_process.c,v 1.8 2009/10/01 02:56:58 scuri Exp $
+ * $Id: imlua_process.c,v 1.9 2010/01/06 20:16:30 scuri Exp $
  */
 
 #include <memory.h>
@@ -2009,18 +2009,19 @@ static int imluaProcessMergeHSI (lua_State *L)
 \*****************************************************************************/
 static int imluaProcessSplitComponents (lua_State *L)
 {
-  int i;
+  int i, src_depth;
   imImage *src_image = imlua_checkimage(L, 1);
   imImage **dst_image_list;
 
   luaL_checktype(L, 2, LUA_TTABLE);
 
-  if (imlua_getn(L, 2) != src_image->depth)
+  src_depth = src_image->has_alpha? src_image->depth+1: src_image->depth;
+  if (imlua_getn(L, 2) != src_depth)
     luaL_error(L, "number of destiny images must match the depth of the source image");
 
-  dst_image_list = (imImage**)malloc(sizeof(imImage*)*src_image->depth);
+  dst_image_list = (imImage**)malloc(sizeof(imImage*)*src_depth);
 
-  for (i = 0; i < src_image->depth; i++)
+  for (i = 0; i < src_depth; i++)
   {
     lua_pushnumber(L, i+1);
     lua_gettable(L, 2);
@@ -2029,7 +2030,7 @@ static int imluaProcessSplitComponents (lua_State *L)
     lua_pop(L, 1);
   }
 
-  for (i = 0; i < src_image->depth; i++)
+  for (i = 0; i < src_depth; i++)
   {
     int check = imImageMatchDataType(src_image, dst_image_list[i]);
     if (!check) free(dst_image_list);
@@ -2048,19 +2049,20 @@ static int imluaProcessSplitComponents (lua_State *L)
 \*****************************************************************************/
 static int imluaProcessMergeComponents (lua_State *L)
 {
-  int i;
+  int i, dst_depth;
   imImage** src_image_list;
   imImage *dst_image;
 
   luaL_checktype(L, 1, LUA_TTABLE);
   dst_image = imlua_checkimage(L, 2);
 
-  if (imlua_getn(L, 1) != dst_image->depth)
+  dst_depth = dst_image->has_alpha? dst_image->depth+1: dst_image->depth;
+  if (imlua_getn(L, 1) != dst_depth)
     luaL_error(L, "number of source images must match the depth of the destination image");
 
-  src_image_list = (imImage**)malloc(sizeof(imImage*)*dst_image->depth);
+  src_image_list = (imImage**)malloc(sizeof(imImage*)*dst_depth);
 
-  for (i = 0; i < dst_image->depth; i++)
+  for (i = 0; i < dst_depth; i++)
   {
     lua_pushnumber(L, i+1);
     lua_gettable(L, 1);
@@ -2069,7 +2071,7 @@ static int imluaProcessMergeComponents (lua_State *L)
     lua_pop(L, 1);
   }
 
-  for (i = 0; i < dst_image->depth; i++)
+  for (i = 0; i < dst_depth; i++)
   {
     int check = imImageMatchDataType(src_image_list[i], dst_image);
     if (!check) free(src_image_list);