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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
3.0 KiB
C
75 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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Public ivtv API header
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Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
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Copyright (C) 2004-2007 Hans Verkuil <hverkuil@xs4all.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __LINUX_IVTV_H__
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#define __LINUX_IVTV_H__
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/videodev2.h>
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/* ivtv knows several distinct output modes: MPEG streaming,
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YUV streaming, YUV updates through user DMA and the passthrough
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mode.
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In order to clearly tell the driver that we are in user DMA
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YUV mode you need to call IVTV_IOC_DMA_FRAME with y_source == NULL
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first (althrough if you don't then the first time
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DMA_FRAME is called the mode switch is done automatically).
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When you close the file handle the user DMA mode is exited again.
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While in one mode, you cannot use another mode (EBUSY is returned).
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All this means that if you want to change the YUV interlacing
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for the user DMA YUV mode you first need to do call IVTV_IOC_DMA_FRAME
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with y_source == NULL before you can set the correct format using
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VIDIOC_S_FMT.
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Eventually all this should be replaced with a proper V4L2 API,
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but for now we have to do it this way. */
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struct ivtv_dma_frame {
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enum v4l2_buf_type type; /* V4L2_BUF_TYPE_VIDEO_OUTPUT */
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__u32 pixelformat; /* 0 == same as destination */
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void __user *y_source; /* if NULL and type == V4L2_BUF_TYPE_VIDEO_OUTPUT,
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then just switch to user DMA YUV output mode */
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void __user *uv_source; /* Unused for RGB pixelformats */
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struct v4l2_rect src;
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struct v4l2_rect dst;
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__u32 src_width;
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__u32 src_height;
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};
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#define IVTV_IOC_DMA_FRAME _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame)
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/* Select the passthrough mode (if the argument is non-zero). In the passthrough
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mode the output of the encoder is passed immediately into the decoder. */
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#define IVTV_IOC_PASSTHROUGH_MODE _IOW ('V', BASE_VIDIOC_PRIVATE+1, int)
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/* Deprecated defines: applications should use the defines from videodev2.h */
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#define IVTV_SLICED_TYPE_TELETEXT_B V4L2_MPEG_VBI_IVTV_TELETEXT_B
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#define IVTV_SLICED_TYPE_CAPTION_525 V4L2_MPEG_VBI_IVTV_CAPTION_525
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#define IVTV_SLICED_TYPE_WSS_625 V4L2_MPEG_VBI_IVTV_WSS_625
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#define IVTV_SLICED_TYPE_VPS V4L2_MPEG_VBI_IVTV_VPS
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#endif /* _LINUX_IVTV_H */
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