Release 4.15 include/uapi/linux/dvb/dmx.h
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
/*
* dmx.h
*
* Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
* & Ralph Metzler <ralph@convergence.de>
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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 Lesser 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 _UAPI_DVBDMX_H_
#define _UAPI_DVBDMX_H_
#include <linux/types.h>
#ifndef __KERNEL__
#include <time.h>
#endif
#define DMX_FILTER_SIZE 16
/**
* enum dmx_output - Output for the demux.
*
* @DMX_OUT_DECODER:
* Streaming directly to decoder.
* @DMX_OUT_TAP:
* Output going to a memory buffer (to be retrieved via the read command).
* Delivers the stream output to the demux device on which the ioctl
* is called.
* @DMX_OUT_TS_TAP:
* Output multiplexed into a new TS (to be retrieved by reading from the
* logical DVR device). Routes output to the logical DVR device
* ``/dev/dvb/adapter?/dvr?``, which delivers a TS multiplexed from all
* filters for which @DMX_OUT_TS_TAP was specified.
* @DMX_OUT_TSDEMUX_TAP:
* Like @DMX_OUT_TS_TAP but retrieved from the DMX device.
*/
enum dmx_output {
DMX_OUT_DECODER,
DMX_OUT_TAP,
DMX_OUT_TS_TAP,
DMX_OUT_TSDEMUX_TAP
};
/**
* enum dmx_input - Input from the demux.
*
* @DMX_IN_FRONTEND: Input from a front-end device.
* @DMX_IN_DVR: Input from the logical DVR device.
*/
enum dmx_input {
DMX_IN_FRONTEND,
DMX_IN_DVR
};
/**
* enum dmx_ts_pes - type of the PES filter.
*
* @DMX_PES_AUDIO0: first audio PID. Also referred as @DMX_PES_AUDIO.
* @DMX_PES_VIDEO0: first video PID. Also referred as @DMX_PES_VIDEO.
* @DMX_PES_TELETEXT0: first teletext PID. Also referred as @DMX_PES_TELETEXT.
* @DMX_PES_SUBTITLE0: first subtitle PID. Also referred as @DMX_PES_SUBTITLE.
* @DMX_PES_PCR0: first Program Clock Reference PID.
* Also referred as @DMX_PES_PCR.
*
* @DMX_PES_AUDIO1: second audio PID.
* @DMX_PES_VIDEO1: second video PID.
* @DMX_PES_TELETEXT1: second teletext PID.
* @DMX_PES_SUBTITLE1: second subtitle PID.
* @DMX_PES_PCR1: second Program Clock Reference PID.
*
* @DMX_PES_AUDIO2: third audio PID.
* @DMX_PES_VIDEO2: third video PID.
* @DMX_PES_TELETEXT2: third teletext PID.
* @DMX_PES_SUBTITLE2: third subtitle PID.
* @DMX_PES_PCR2: third Program Clock Reference PID.
*
* @DMX_PES_AUDIO3: fourth audio PID.
* @DMX_PES_VIDEO3: fourth video PID.
* @DMX_PES_TELETEXT3: fourth teletext PID.
* @DMX_PES_SUBTITLE3: fourth subtitle PID.
* @DMX_PES_PCR3: fourth Program Clock Reference PID.
*
* @DMX_PES_OTHER: any other PID.
*/
enum dmx_ts_pes {
DMX_PES_AUDIO0,
DMX_PES_VIDEO0,
DMX_PES_TELETEXT0,
DMX_PES_SUBTITLE0,
DMX_PES_PCR0,
DMX_PES_AUDIO1,
DMX_PES_VIDEO1,
DMX_PES_TELETEXT1,
DMX_PES_SUBTITLE1,
DMX_PES_PCR1,
DMX_PES_AUDIO2,
DMX_PES_VIDEO2,
DMX_PES_TELETEXT2,
DMX_PES_SUBTITLE2,
DMX_PES_PCR2,
DMX_PES_AUDIO3,
DMX_PES_VIDEO3,
DMX_PES_TELETEXT3,
DMX_PES_SUBTITLE3,
DMX_PES_PCR3,
DMX_PES_OTHER
};
#define DMX_PES_AUDIO DMX_PES_AUDIO0
#define DMX_PES_VIDEO DMX_PES_VIDEO0
#define DMX_PES_TELETEXT DMX_PES_TELETEXT0
#define DMX_PES_SUBTITLE DMX_PES_SUBTITLE0
#define DMX_PES_PCR DMX_PES_PCR0
/**
* struct dmx_filter - Specifies a section header filter.
*
* @filter: bit array with bits to be matched at the section header.
* @mask: bits that are valid at the filter bit array.
* @mode: mode of match: if bit is zero, it will match if equal (positive
* match); if bit is one, it will match if the bit is negated.
*
* Note: All arrays in this struct have a size of DMX_FILTER_SIZE (16 bytes).
*/
struct dmx_filter {
__u8 filter[DMX_FILTER_SIZE];
__u8 mask[DMX_FILTER_SIZE];
__u8 mode[DMX_FILTER_SIZE];
};
/**
* struct dmx_sct_filter_params - Specifies a section filter.
*
* @pid: PID to be filtered.
* @filter: section header filter, as defined by &struct dmx_filter.
* @timeout: maximum time to filter, in milliseconds.
* @flags: extra flags for the section filter.
*
* Carries the configuration for a MPEG-TS section filter.
*
* The @flags can be:
*
* - %DMX_CHECK_CRC - only deliver sections where the CRC check succeeded;
* - %DMX_ONESHOT - disable the section filter after one section
* has been delivered;
* - %DMX_IMMEDIATE_START - Start filter immediately without requiring a
* :ref:`DMX_START`.
*/
struct dmx_sct_filter_params {
__u16 pid;
struct dmx_filter filter;
__u32 timeout;
__u32 flags;
#define DMX_CHECK_CRC 1
#define DMX_ONESHOT 2
#define DMX_IMMEDIATE_START 4
};
/**
* struct dmx_pes_filter_params - Specifies Packetized Elementary Stream (PES)
* filter parameters.
*
* @pid: PID to be filtered.
* @input: Demux input, as specified by &enum dmx_input.
* @output: Demux output, as specified by &enum dmx_output.
* @pes_type: Type of the pes filter, as specified by &enum dmx_pes_type.
* @flags: Demux PES flags.
*/
struct dmx_pes_filter_params {
__u16 pid;
enum dmx_input input;
enum dmx_output output;
enum dmx_ts_pes pes_type;
__u32 flags;
};
/**
* struct dmx_stc - Stores System Time Counter (STC) information.
*
* @num: input data: number of the STC, from 0 to N.
* @base: output: divisor for STC to get 90 kHz clock.
* @stc: output: stc in @base * 90 kHz units.
*/
struct dmx_stc {
unsigned int num;
unsigned int base;
__u64 stc;
};
#define DMX_START _IO('o', 41)
#define DMX_STOP _IO('o', 42)
#define DMX_SET_FILTER _IOW('o', 43, struct dmx_sct_filter_params)
#define DMX_SET_PES_FILTER _IOW('o', 44, struct dmx_pes_filter_params)
#define DMX_SET_BUFFER_SIZE _IO('o', 45)
#define DMX_GET_PES_PIDS _IOR('o', 47, __u16[5])
#define DMX_GET_STC _IOWR('o', 50, struct dmx_stc)
#define DMX_ADD_PID _IOW('o', 51, __u16)
#define DMX_REMOVE_PID _IOW('o', 52, __u16)
#if !defined(__KERNEL__)
/* This is needed for legacy userspace support */
typedef enum dmx_output dmx_output_t;
typedef enum dmx_input dmx_input_t;
typedef enum dmx_ts_pes dmx_pes_type_t;
typedef struct dmx_filter dmx_filter_t;
#endif
#endif /* _UAPI_DVBDMX_H_ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 224 | 80.87% | 1 | 14.29% |
| Mauro Carvalho Chehab | 52 | 18.77% | 5 | 71.43% |
| Greg Kroah-Hartman | 1 | 0.36% | 1 | 14.29% |
| Total | 277 | 100.00% | 7 | 100.00% |
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