Imported from libpng-0.97a.tar
diff --git a/pngwio.c b/pngwio.c
index 0fa2a94..497c5ca 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -33,6 +33,7 @@
png_error(png_ptr, "Call to NULL write function");
}
+#if !defined(PNG_NO_STDIO)
/* This is the function which does the actual writing of data. If you are
not writing to a standard C stream, you should create a replacement
write_data function and use it at run time with png_set_write_fn(), rather
@@ -99,6 +100,7 @@
}
#endif
+#endif
/* This function is called to output any data pending writing (normally
to disk). After png_flush is called, there should be no data pending
@@ -111,6 +113,7 @@
(*(png_ptr->output_flush_fn))(png_ptr);
}
+#if !defined(PNG_NO_STDIO)
static void
png_default_flush(png_structp png_ptr)
{
@@ -120,6 +123,7 @@
fflush(io_ptr);
}
#endif
+#endif
/* This function allows the application to supply new output functions for
libpng if standard C streams aren't being used.
@@ -149,16 +153,24 @@
{
png_ptr->io_ptr = io_ptr;
+#if !defined(PNG_NO_STDIO)
if (write_data_fn != NULL)
png_ptr->write_data_fn = write_data_fn;
else
png_ptr->write_data_fn = png_default_write_data;
+#else
+ png_ptr->write_data_fn = write_data_fn;
+#endif
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#if !defined(PNG_NO_STDIO)
if (output_flush_fn != NULL)
png_ptr->output_flush_fn = output_flush_fn;
else
png_ptr->output_flush_fn = png_default_flush;
+#else
+ png_ptr->output_flush_fn = output_flush_fn;
+#endif
#endif /* PNG_WRITE_FLUSH_SUPPORTED */
/* It is an error to read while writing a png file */