cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / ivtv.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/ivtv.h b/i686-linux-gnu-4.7/usr/include/linux/ivtv.h
new file mode 100644 (file)
index 0000000..db40713
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/ivtv.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+    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__
+
+
+#include <linux/types.h>
+#include <linux/videodev2.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 *y_source;   /* if NULL and type == V4L2_BUF_TYPE_VIDEO_OUTPUT,
+                                   then just switch to user DMA YUV output mode */
+       void *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)
+
+/* Select the passthrough mode (if the argument is non-zero). In the passthrough
+   mode the output of the encoder is passed immediately into the decoder. */
+#define IVTV_IOC_PASSTHROUGH_MODE      _IOW ('V', BASE_VIDIOC_PRIVATE+1, int)
+
+/* Deprecated defines: applications should use the defines from videodev2.h */
+#define IVTV_SLICED_TYPE_TELETEXT_B     V4L2_MPEG_VBI_IVTV_TELETEXT_B
+#define IVTV_SLICED_TYPE_CAPTION_525    V4L2_MPEG_VBI_IVTV_CAPTION_525
+#define IVTV_SLICED_TYPE_WSS_625        V4L2_MPEG_VBI_IVTV_WSS_625
+#define IVTV_SLICED_TYPE_VPS            V4L2_MPEG_VBI_IVTV_VPS
+
+#endif /* _LINUX_IVTV_H */