327 lines
9.9 KiB
C
327 lines
9.9 KiB
C
/* 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 _DVBDMX_H_
|
|
#define _DVBDMX_H_
|
|
|
|
#include <linux/types.h>
|
|
#include <time.h>
|
|
|
|
|
|
#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;
|
|
};
|
|
|
|
/**
|
|
* enum dmx_buffer_flags - DMX memory-mapped buffer flags
|
|
*
|
|
* @DMX_BUFFER_FLAG_HAD_CRC32_DISCARD:
|
|
* Indicates that the Kernel discarded one or more frames due to wrong
|
|
* CRC32 checksum.
|
|
* @DMX_BUFFER_FLAG_TEI:
|
|
* Indicates that the Kernel has detected a Transport Error indicator
|
|
* (TEI) on a filtered pid.
|
|
* @DMX_BUFFER_PKT_COUNTER_MISMATCH:
|
|
* Indicates that the Kernel has detected a packet counter mismatch
|
|
* on a filtered pid.
|
|
* @DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED:
|
|
* Indicates that the Kernel has detected one or more frame discontinuity.
|
|
* @DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR:
|
|
* Received at least one packet with a frame discontinuity indicator.
|
|
*/
|
|
|
|
enum dmx_buffer_flags {
|
|
DMX_BUFFER_FLAG_HAD_CRC32_DISCARD = 1 << 0,
|
|
DMX_BUFFER_FLAG_TEI = 1 << 1,
|
|
DMX_BUFFER_PKT_COUNTER_MISMATCH = 1 << 2,
|
|
DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED = 1 << 3,
|
|
DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR = 1 << 4,
|
|
};
|
|
|
|
/**
|
|
* struct dmx_buffer - dmx buffer info
|
|
*
|
|
* @index: id number of the buffer
|
|
* @bytesused: number of bytes occupied by data in the buffer (payload);
|
|
* @offset: for buffers with memory == DMX_MEMORY_MMAP;
|
|
* offset from the start of the device memory for this plane,
|
|
* (or a "cookie" that should be passed to mmap() as offset)
|
|
* @length: size in bytes of the buffer
|
|
* @flags: bit array of buffer flags as defined by &enum dmx_buffer_flags.
|
|
* Filled only at &DMX_DQBUF.
|
|
* @count: monotonic counter for filled buffers. Helps to identify
|
|
* data stream loses. Filled only at &DMX_DQBUF.
|
|
*
|
|
* Contains data exchanged by application and driver using one of the streaming
|
|
* I/O methods.
|
|
*
|
|
* Please notice that, for &DMX_QBUF, only @index should be filled.
|
|
* On &DMX_DQBUF calls, all fields will be filled by the Kernel.
|
|
*/
|
|
struct dmx_buffer {
|
|
__u32 index;
|
|
__u32 bytesused;
|
|
__u32 offset;
|
|
__u32 length;
|
|
__u32 flags;
|
|
__u32 count;
|
|
};
|
|
|
|
/**
|
|
* struct dmx_requestbuffers - request dmx buffer information
|
|
*
|
|
* @count: number of requested buffers,
|
|
* @size: size in bytes of the requested buffer
|
|
*
|
|
* Contains data used for requesting a dmx buffer.
|
|
* All reserved fields must be set to zero.
|
|
*/
|
|
struct dmx_requestbuffers {
|
|
__u32 count;
|
|
__u32 size;
|
|
};
|
|
|
|
/**
|
|
* struct dmx_exportbuffer - export of dmx buffer as DMABUF file descriptor
|
|
*
|
|
* @index: id number of the buffer
|
|
* @flags: flags for newly created file, currently only O_CLOEXEC is
|
|
* supported, refer to manual of open syscall for more details
|
|
* @fd: file descriptor associated with DMABUF (set by driver)
|
|
*
|
|
* Contains data used for exporting a dmx buffer as DMABUF file descriptor.
|
|
* The buffer is identified by a 'cookie' returned by DMX_QUERYBUF
|
|
* (identical to the cookie used to mmap() the buffer to userspace). All
|
|
* reserved fields must be set to zero. The field reserved0 is expected to
|
|
* become a structure 'type' allowing an alternative layout of the structure
|
|
* content. Therefore this field should not be used for any other extensions.
|
|
*/
|
|
struct dmx_exportbuffer {
|
|
__u32 index;
|
|
__u32 flags;
|
|
__s32 fd;
|
|
};
|
|
|
|
#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)
|
|
|
|
|
|
/* 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;
|
|
|
|
|
|
#define DMX_REQBUFS _IOWR('o', 60, struct dmx_requestbuffers)
|
|
#define DMX_QUERYBUF _IOWR('o', 61, struct dmx_buffer)
|
|
#define DMX_EXPBUF _IOWR('o', 62, struct dmx_exportbuffer)
|
|
#define DMX_QBUF _IOWR('o', 63, struct dmx_buffer)
|
|
#define DMX_DQBUF _IOWR('o', 64, struct dmx_buffer)
|
|
|
|
#endif /* _DVBDMX_H_ */
|