ext/writer.c in ruby-vips-0.2.1 vs ext/writer.c in ruby-vips-0.3.0

@@ -1,8 +1,6 @@
 #include "ruby_vips.h"
-#include "image.h"
-#include "header.h"
 
 /* :nodoc: */
 
 static VALUE
 writer_initialize(int argc, VALUE *argv, VALUE obj)
@@ -142,29 +140,19 @@
 /* :nodoc: */
 
 static VALUE
 jpeg_buf_internal(VALUE obj, VALUE quality)
 {
-    VipsImage *im_out;
     char *buf = NULL;
     int length;
-    VALUE str;
 
     GetImg(obj, data, im);
 
-    if (!(im_out = im_open("writer_jpeg_buf", "p")))
+    if (im_vips2bufjpeg(im, NULL, NUM2INT(quality), &buf, &length)) 
         vips_lib_error();
 
-    if (im_vips2bufjpeg(im, im_out, NUM2INT(quality), &buf, &length)) {
-		im_close(im_out);
-        vips_lib_error();
-	}
-
-    str = rb_tainted_str_new(buf, length);
-    im_close(im_out);
-
-    return str;
+    return rb_tainted_str_new(buf, length);
 }
 
 /* :nodoc: */
 
 static VALUE
@@ -208,26 +196,18 @@
 
 static VALUE
 png_buf_internal(VALUE obj, VALUE compression, VALUE interlace)
 {
 #if IM_MAJOR_VERSION > 7 || IM_MINOR_VERSION >= 23
-    VipsImage *im_out;
     char *buf;
     size_t length;
     GetImg(obj, data, im);
 
-    if (!(im_out = im_open("writer_png_buf", "p")))
+    if (im_vips2bufpng(im, NULL, NUM2INT(compression), NUM2INT(interlace),
+        &buf, &length)) 
         vips_lib_error();
 
-    if (im_vips2bufpng(im, im_out, NUM2INT(compression), NUM2INT(interlace),
-        &buf, &length)) {
-        im_close(im_out);
-        vips_lib_error();
-	}
-
-    im_close(im_out);
-
     return rb_tainted_str_new(buf, length);
 #else
     rb_raise(eVIPSError, "This method is not implemented in your version of VIPS");
 #endif
 }
@@ -280,10 +260,10 @@
 /*
  *  Base class for image format readers.
  */
 
 void
-init_Writer()
+init_Writer(void)
 {
     VALUE writer = rb_define_class_under(mVIPS, "Writer", rb_cObject);
 
     rb_include_module(writer, mVIPSHeader);
     rb_define_alloc_func(writer, img_init_partial_anyclass);