[gimp] app: Add temp_buf_dump()

[Martin Nordholts <martinn src gnome org>]

commit 1dbf732943497b4428862966b32911ef770debad
Author: Martin Nordholts <martinn src gnome org>
Date:   Fri Aug 14 19:18:56 2009 +0200

    app: Add temp_buf_dump()
    
    Add temp_buf_dump() which can be used to dump TempBufs to disk for
    easier analysis, for example with GIMP.

 app/base/temp-buf.c |   29 +++++++++++++++++++++++++++++
 app/base/temp-buf.h |    2 ++
 2 files changed, 31 insertions(+), 0 deletions(-)
---
diff --git a/app/base/temp-buf.c b/app/base/temp-buf.c
index aa9d1a3..ebc00c3 100644
--- a/app/base/temp-buf.c
+++ b/app/base/temp-buf.c
@@ -17,9 +17,14 @@
 
 #include "config.h"
 
+#include <fcntl.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include <glib-object.h>
+#include <glib/gstdio.h>
 
 #include "libgimpbase/gimpbase.h"
 #include "libgimpcolor/gimpcolor.h"
@@ -439,6 +444,30 @@ temp_buf_get_memsize (TempBuf *buf)
 }
 
 
+/**
+ * temp_buf_dump:
+ * @buf:
+ * @file:
+ *
+ * Dumps a TempBuf to a raw RGB image that is easy to analyze, for
+ * example with GIMP.
+ **/
+void
+temp_buf_dump (TempBuf     *buf,
+               const gchar *filename)
+{
+  gint fd = g_open (filename, O_CREAT | O_TRUNC | O_WRONLY, 0666);
+
+  g_return_if_fail (fd != -1);
+  g_return_if_fail (buf != NULL);
+  g_return_if_fail (temp_buf_get_data (buf) != NULL);
+
+  write (fd, temp_buf_get_data (buf), temp_buf_get_data_size (buf));
+
+  close (fd);
+}
+
+
 /*  The conversion routines  */
 
 static void
diff --git a/app/base/temp-buf.h b/app/base/temp-buf.h
index fa42c51..a6f9b6b 100644
--- a/app/base/temp-buf.h
+++ b/app/base/temp-buf.h
@@ -70,6 +70,8 @@ gsize     temp_buf_get_data_size (TempBuf       *buf);
 guchar  * temp_buf_data_clear    (TempBuf       *buf);
 
 gsize     temp_buf_get_memsize   (TempBuf       *buf);
+void      temp_buf_dump          (TempBuf       *buf,
+                                  const gchar   *filename);
 
 
 #endif  /*  __TEMP_BUF_H__  */