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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>
235 lines
6.7 KiB
C
235 lines
6.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
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/*
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* dmx.h
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*
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* Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
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* & Ralph Metzler <ralph@convergence.de>
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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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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*
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* You should have received a copy of the GNU Lesser 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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*/
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#ifndef _UAPI_DVBDMX_H_
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#define _UAPI_DVBDMX_H_
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#include <linux/types.h>
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#ifndef __KERNEL__
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#include <time.h>
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#endif
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#define DMX_FILTER_SIZE 16
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/**
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* enum dmx_output - Output for the demux.
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*
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* @DMX_OUT_DECODER:
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* Streaming directly to decoder.
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* @DMX_OUT_TAP:
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* Output going to a memory buffer (to be retrieved via the read command).
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* Delivers the stream output to the demux device on which the ioctl
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* is called.
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* @DMX_OUT_TS_TAP:
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* Output multiplexed into a new TS (to be retrieved by reading from the
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* logical DVR device). Routes output to the logical DVR device
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* ``/dev/dvb/adapter?/dvr?``, which delivers a TS multiplexed from all
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* filters for which @DMX_OUT_TS_TAP was specified.
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* @DMX_OUT_TSDEMUX_TAP:
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* Like @DMX_OUT_TS_TAP but retrieved from the DMX device.
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*/
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enum dmx_output {
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DMX_OUT_DECODER,
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DMX_OUT_TAP,
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DMX_OUT_TS_TAP,
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DMX_OUT_TSDEMUX_TAP
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};
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/**
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* enum dmx_input - Input from the demux.
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*
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* @DMX_IN_FRONTEND: Input from a front-end device.
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* @DMX_IN_DVR: Input from the logical DVR device.
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*/
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enum dmx_input {
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DMX_IN_FRONTEND,
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DMX_IN_DVR
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};
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/**
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* enum dmx_ts_pes - type of the PES filter.
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*
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* @DMX_PES_AUDIO0: first audio PID. Also referred as @DMX_PES_AUDIO.
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* @DMX_PES_VIDEO0: first video PID. Also referred as @DMX_PES_VIDEO.
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* @DMX_PES_TELETEXT0: first teletext PID. Also referred as @DMX_PES_TELETEXT.
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* @DMX_PES_SUBTITLE0: first subtitle PID. Also referred as @DMX_PES_SUBTITLE.
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* @DMX_PES_PCR0: first Program Clock Reference PID.
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* Also referred as @DMX_PES_PCR.
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*
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* @DMX_PES_AUDIO1: second audio PID.
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* @DMX_PES_VIDEO1: second video PID.
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* @DMX_PES_TELETEXT1: second teletext PID.
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* @DMX_PES_SUBTITLE1: second subtitle PID.
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* @DMX_PES_PCR1: second Program Clock Reference PID.
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*
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* @DMX_PES_AUDIO2: third audio PID.
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* @DMX_PES_VIDEO2: third video PID.
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* @DMX_PES_TELETEXT2: third teletext PID.
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* @DMX_PES_SUBTITLE2: third subtitle PID.
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* @DMX_PES_PCR2: third Program Clock Reference PID.
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*
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* @DMX_PES_AUDIO3: fourth audio PID.
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* @DMX_PES_VIDEO3: fourth video PID.
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* @DMX_PES_TELETEXT3: fourth teletext PID.
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* @DMX_PES_SUBTITLE3: fourth subtitle PID.
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* @DMX_PES_PCR3: fourth Program Clock Reference PID.
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*
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* @DMX_PES_OTHER: any other PID.
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*/
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enum dmx_ts_pes {
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DMX_PES_AUDIO0,
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DMX_PES_VIDEO0,
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DMX_PES_TELETEXT0,
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DMX_PES_SUBTITLE0,
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DMX_PES_PCR0,
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DMX_PES_AUDIO1,
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DMX_PES_VIDEO1,
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DMX_PES_TELETEXT1,
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DMX_PES_SUBTITLE1,
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DMX_PES_PCR1,
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DMX_PES_AUDIO2,
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DMX_PES_VIDEO2,
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DMX_PES_TELETEXT2,
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DMX_PES_SUBTITLE2,
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DMX_PES_PCR2,
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DMX_PES_AUDIO3,
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DMX_PES_VIDEO3,
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DMX_PES_TELETEXT3,
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DMX_PES_SUBTITLE3,
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DMX_PES_PCR3,
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DMX_PES_OTHER
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};
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#define DMX_PES_AUDIO DMX_PES_AUDIO0
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#define DMX_PES_VIDEO DMX_PES_VIDEO0
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#define DMX_PES_TELETEXT DMX_PES_TELETEXT0
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#define DMX_PES_SUBTITLE DMX_PES_SUBTITLE0
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#define DMX_PES_PCR DMX_PES_PCR0
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/**
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* struct dmx_filter - Specifies a section header filter.
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*
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* @filter: bit array with bits to be matched at the section header.
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* @mask: bits that are valid at the filter bit array.
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* @mode: mode of match: if bit is zero, it will match if equal (positive
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* match); if bit is one, it will match if the bit is negated.
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*
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* Note: All arrays in this struct have a size of DMX_FILTER_SIZE (16 bytes).
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*/
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struct dmx_filter {
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__u8 filter[DMX_FILTER_SIZE];
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__u8 mask[DMX_FILTER_SIZE];
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__u8 mode[DMX_FILTER_SIZE];
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};
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/**
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* struct dmx_sct_filter_params - Specifies a section filter.
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*
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* @pid: PID to be filtered.
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* @filter: section header filter, as defined by &struct dmx_filter.
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* @timeout: maximum time to filter, in milliseconds.
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* @flags: extra flags for the section filter.
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*
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* Carries the configuration for a MPEG-TS section filter.
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*
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* The @flags can be:
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*
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* - %DMX_CHECK_CRC - only deliver sections where the CRC check succeeded;
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* - %DMX_ONESHOT - disable the section filter after one section
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* has been delivered;
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* - %DMX_IMMEDIATE_START - Start filter immediately without requiring a
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* :ref:`DMX_START`.
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*/
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struct dmx_sct_filter_params {
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__u16 pid;
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struct dmx_filter filter;
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__u32 timeout;
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__u32 flags;
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#define DMX_CHECK_CRC 1
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#define DMX_ONESHOT 2
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#define DMX_IMMEDIATE_START 4
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};
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/**
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* struct dmx_pes_filter_params - Specifies Packetized Elementary Stream (PES)
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* filter parameters.
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*
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* @pid: PID to be filtered.
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* @input: Demux input, as specified by &enum dmx_input.
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* @output: Demux output, as specified by &enum dmx_output.
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* @pes_type: Type of the pes filter, as specified by &enum dmx_pes_type.
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* @flags: Demux PES flags.
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*/
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struct dmx_pes_filter_params {
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__u16 pid;
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enum dmx_input input;
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enum dmx_output output;
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enum dmx_ts_pes pes_type;
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__u32 flags;
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};
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/**
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* struct dmx_stc - Stores System Time Counter (STC) information.
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*
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* @num: input data: number of the STC, from 0 to N.
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* @base: output: divisor for STC to get 90 kHz clock.
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* @stc: output: stc in @base * 90 kHz units.
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*/
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struct dmx_stc {
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unsigned int num;
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unsigned int base;
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__u64 stc;
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};
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#define DMX_START _IO('o', 41)
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#define DMX_STOP _IO('o', 42)
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#define DMX_SET_FILTER _IOW('o', 43, struct dmx_sct_filter_params)
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#define DMX_SET_PES_FILTER _IOW('o', 44, struct dmx_pes_filter_params)
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#define DMX_SET_BUFFER_SIZE _IO('o', 45)
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#define DMX_GET_PES_PIDS _IOR('o', 47, __u16[5])
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#define DMX_GET_STC _IOWR('o', 50, struct dmx_stc)
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#define DMX_ADD_PID _IOW('o', 51, __u16)
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#define DMX_REMOVE_PID _IOW('o', 52, __u16)
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#if !defined(__KERNEL__)
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/* This is needed for legacy userspace support */
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typedef enum dmx_output dmx_output_t;
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typedef enum dmx_input dmx_input_t;
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typedef enum dmx_ts_pes dmx_pes_type_t;
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typedef struct dmx_filter dmx_filter_t;
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#endif
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#endif /* _UAPI_DVBDMX_H_ */
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