mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 03:40:53 +07:00
4c522e7490
linux/videodev2.h defines enum v4l2_buf_type and struct v4l2_rect Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
/*
|
|
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/compiler.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 __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 */
|