snapshot: Add JPEG compression support

Specifying the -j flag results in captured images being saved in JPEG
format instead of raw YUYV. JPEG compression implies YUYV capture,
software demosaicing isn't supported.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/jpeg.h b/jpeg.h
new file mode 100644
index 0000000..0d646d0
--- /dev/null
+++ b/jpeg.h
@@ -0,0 +1,39 @@
+/*
+ * OMAP3 ISP snapshot test application
+ *
+ * Copyright (C) 2012 Ideas on board SPRL
+ *
+ * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __JPEG_H__
+#define __JPEG_H__
+
+#include <stdio.h>
+
+#include <linux/v4l2-mediabus.h>
+
+#include "isp/v4l2-pool.h"
+
+struct jpeg;
+
+struct jpeg *jpeg_init(const struct v4l2_mbus_framefmt *format);
+void jpeg_cleanup(struct jpeg *jpeg);
+
+int jpeg_save(struct jpeg *jpeg, FILE *file, struct v4l2_video_buffer *buffer);
+
+#endif