1 files changed, 110 insertions, 0 deletions
diff --git a/gs/src/sjpege.c b/gs/src/sjpege.c
new file mode 100644
index 000000000..6f1cfa714
--- /dev/null
+++ b/gs/src/sjpege.c
@@ -0,0 +1,110 @@
+/* Copyright (C) 1994 Aladdin Enterprises.  All rights reserved.
+  
+  This file is part of Aladdin Ghostscript.
+  
+  Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author
+  or distributor accepts any responsibility for the consequences of using it,
+  or for whether it serves any particular purpose or works at all, unless he
+  or she says so in writing.  Refer to the Aladdin Ghostscript Free Public
+  License (the "License") for full details.
+  
+  Every copy of Aladdin Ghostscript must include a copy of the License,
+  normally in a plain ASCII text file named PUBLIC.  The License grants you
+  the right to copy, modify and redistribute Aladdin Ghostscript, but only
+  under certain conditions described in the License.  Among other things, the
+  License requires that the copyright notice and this notice be preserved on
+  all copies.
+*/
+
+/* sjpege.c */
+/* Interface routines for IJG encoding code. */
+#include "stdio_.h"
+#include "string_.h"
+#include "jpeglib.h"
+#include "jerror.h"
+#include "gx.h"
+#include "gserrors.h"
+#include "strimpl.h"
+#include "sdct.h"
+#include "sjpeg.h"
+
+/*
+ * Interface routines.  This layer of routines exists solely to limit
+ * side-effects from using setjmp.
+ */
+
+int
+gs_jpeg_create_compress (stream_DCT_state *st)
+{	/* Initialize error handling */
+	gs_jpeg_error_setup(st);
+	/* Establish the setjmp return context for gs_jpeg_error_exit to use. */
+	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+
+	jpeg_create_compress(&st->data.compress->cinfo);
+	return 0;
+}
+
+int
+gs_jpeg_set_defaults (stream_DCT_state *st)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_set_defaults(&st->data.compress->cinfo);
+	return 0;
+}
+
+int
+gs_jpeg_set_colorspace (stream_DCT_state *st,
+			J_COLOR_SPACE colorspace)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_set_colorspace(&st->data.compress->cinfo, colorspace);
+	return 0;
+}
+
+int
+gs_jpeg_set_linear_quality (stream_DCT_state *st,
+			    int scale_factor, boolean force_baseline)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_set_linear_quality(&st->data.compress->cinfo,
+				scale_factor, force_baseline);
+	return 0;
+}
+
+int
+gs_jpeg_set_quality (stream_DCT_state *st,
+		     int quality, boolean force_baseline)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_set_quality(&st->data.compress->cinfo,
+			 quality, force_baseline);
+	return 0;
+}
+
+int
+gs_jpeg_start_compress (stream_DCT_state *st,
+			boolean write_all_tables)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_start_compress(&st->data.compress->cinfo, write_all_tables);
+	return 0;
+}
+
+int
+gs_jpeg_write_scanlines (stream_DCT_state *st,
+			 JSAMPARRAY scanlines,
+			 int num_lines)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	return (int) jpeg_write_scanlines(&st->data.compress->cinfo,
+					  scanlines, (JDIMENSION) num_lines);
+}
+
+int
+gs_jpeg_finish_compress (stream_DCT_state *st)
+{	if (setjmp(st->data.common->exit_jmpbuf))
+		return_error(gs_jpeg_log_error(st));
+	jpeg_finish_compress(&st->data.compress->cinfo);
+	return 0;
+}