V4L/DVB (6123): ivtv: move ivtv.h public header to include/linux

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/include/linux/ivtv.h b/include/linux/ivtv.h
new file mode 100644
index 0000000..794b8da
--- /dev/null
+++ b/include/linux/ivtv.h
@@ -0,0 +1,72 @@
+/*
+    Public ivtv API header
+    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
+    Copyright (C) 2004-2007  Hans Verkuil <hverkuil@xs4all.nl>
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __LINUX_IVTV_H__
+#define __LINUX_IVTV_H__
+
+#ifdef __KERNEL__
+#include <linux/compiler.h> /* need __user */
+#else
+#define __user
+#endif
+#include <linux/types.h>
+
+/* ivtv knows several distinct output modes: MPEG streaming,
+   YUV streaming, YUV updates through user DMA and the passthrough
+   mode.
+
+   In order to clearly tell the driver that we are in user DMA
+   YUV mode you need to call IVTV_IOC_DMA_FRAME with y_source == NULL
+   first (althrough if you don't then the first time
+   DMA_FRAME is called the mode switch is done automatically).
+
+   When you close the file handle the user DMA mode is exited again.
+
+   While in one mode, you cannot use another mode (EBUSY is returned).
+
+   All this means that if you want to change the YUV interlacing
+   for the user DMA YUV mode you first need to do call IVTV_IOC_DMA_FRAME
+   with y_source == NULL before you can set the correct format using
+   VIDIOC_S_FMT.
+
+   Eventually all this should be replaced with a proper V4L2 API,
+   but for now we have to do it this way. */
+
+struct ivtv_dma_frame {
+	enum v4l2_buf_type type; /* V4L2_BUF_TYPE_VIDEO_OUTPUT */
+	__u32 pixelformat;	 /* 0 == same as destination */
+	void __user *y_source;   /* if NULL and type == V4L2_BUF_TYPE_VIDEO_OUTPUT,
+				    then just switch to user DMA YUV output mode */
+	void __user *uv_source;  /* Unused for RGB pixelformats */
+	struct v4l2_rect src;
+	struct v4l2_rect dst;
+	__u32 src_width;
+	__u32 src_height;
+};
+
+#define IVTV_IOC_DMA_FRAME  _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame)
+
+/* These are the VBI types as they appear in the embedded VBI private packets. */
+#define IVTV_SLICED_TYPE_TELETEXT_B     (1)
+#define IVTV_SLICED_TYPE_CAPTION_525    (4)
+#define IVTV_SLICED_TYPE_WSS_625        (5)
+#define IVTV_SLICED_TYPE_VPS            (7)
+
+#endif /* _LINUX_IVTV_H */