Add a new memory device constructor which uses copydevice.

git-svn-id: http://svn.ghostscript.com/ghostscript/trunk@9965 a1074d23-0009-0410-80fe-cf8c14f379e6

1 files changed, 29 insertions, 0 deletions

diff --git a/gs/base/gdevmem.c b/gs/base/gdevmem.c
index caf92802a..34caa98d3 100644
--- a/gs/base/gdevmem.c
+++ b/gs/base/gdevmem.c
@@ -14,6 +14,7 @@
 /* Generic "memory" (stored bitmap) device */
 #include "memory_.h"
 #include "gx.h"
+#include "gsdevice.h"
 #include "gserrors.h"
 #include "gsrect.h"
 #include "gsstruct.h"
@@ -178,6 +179,34 @@ gs_make_mem_device(gx_device_memory * dev, const gx_device_memory * mdproto,
     gx_device_fill_in_procs((gx_device *)dev);
     dev->band_y = 0;
 }
+
+/* Make a monobit memory device using copydevice */
+int
+gs_make_mem_mono_device_with_copydevice(gx_device_memory ** ppdev, gs_memory_t * mem, 
+                                        gx_device * target)
+{
+    int code;
+    gx_device_memory *pdev;
+
+    if (mem == 0)
+        return -1;
+    
+    code = gs_copydevice((gx_device **)&pdev,
+                         (const gx_device *)&mem_mono_device,
+                         mem);
+    if (code < 0)
+        return code;
+
+    set_dev_proc(pdev, get_page_device, gx_default_get_page_device);
+    gx_device_set_target((gx_device_forward *)pdev, target);
+    gdev_mem_mono_set_inverted(pdev, true);
+    check_device_separable((gx_device *)pdev);
+    gx_device_fill_in_procs((gx_device *)pdev);
+    *ppdev = pdev;
+    return 0;
+}
+
+    
 /* Make a monobit memory device.  This is never a page device. */
 /* Note that white=0, black=1. */
 void