[linux-2.6-block.git] / 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;
};

/**
 * 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)

#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

#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_ */
Commit	Line	Data
e2be04c7	1	/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
c57fd021 DH	2	/*
	3	* dmx.h
	4	*
	5	* Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
	6	* & Ralph Metzler <ralph@convergence.de>
	7	* for convergence integrated media GmbH
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public License
	11	* as published by the Free Software Foundation; either version 2.1
	12	* of the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	22	*
	23	*/
	24
	25	#ifndef _UAPI_DVBDMX_H_
	26	#define _UAPI_DVBDMX_H_
	27
	28	#include <linux/types.h>
	29	#ifndef __KERNEL__
	30	#include <time.h>
	31	#endif
	32
	33
	34	#define DMX_FILTER_SIZE 16
	35
bb98e6d2 MCC	36	/**
	37	* enum dmx_output - Output for the demux.
	38	*
	39	* @DMX_OUT_DECODER:
	40	* Streaming directly to decoder.
	41	* @DMX_OUT_TAP:
	42	* Output going to a memory buffer (to be retrieved via the read command).
	43	* Delivers the stream output to the demux device on which the ioctl
	44	* is called.
	45	* @DMX_OUT_TS_TAP:
	46	* Output multiplexed into a new TS (to be retrieved by reading from the
	47	* logical DVR device). Routes output to the logical DVR device
	48	* ``/dev/dvb/adapter?/dvr?``, which delivers a TS multiplexed from all
	49	* filters for which @DMX_OUT_TS_TAP was specified.
	50	* @DMX_OUT_TSDEMUX_TAP:
	51	* Like @DMX_OUT_TS_TAP but retrieved from the DMX device.
	52	*/
	53	enum dmx_output {
	54	DMX_OUT_DECODER,
	55	DMX_OUT_TAP,
	56	DMX_OUT_TS_TAP,
	57	DMX_OUT_TSDEMUX_TAP
6eab8043	58	};
c57fd021	59
bb98e6d2 MCC	60
	61	/**
	62	* enum dmx_input - Input from the demux.
	63	*
	64	* @DMX_IN_FRONTEND: Input from a front-end device.
	65	* @DMX_IN_DVR: Input from the logical DVR device.
	66	*/
	67	enum dmx_input {
	68	DMX_IN_FRONTEND,
	69	DMX_IN_DVR
3256b36e	70	};
c57fd021	71
bb98e6d2 MCC	72	/**
	73	* enum dmx_ts_pes - type of the PES filter.
	74	*
	75	* @DMX_PES_AUDIO0: first audio PID. Also referred as @DMX_PES_AUDIO.
	76	* @DMX_PES_VIDEO0: first video PID. Also referred as @DMX_PES_VIDEO.
	77	* @DMX_PES_TELETEXT0: first teletext PID. Also referred as @DMX_PES_TELETEXT.
	78	* @DMX_PES_SUBTITLE0: first subtitle PID. Also referred as @DMX_PES_SUBTITLE.
	79	* @DMX_PES_PCR0: first Program Clock Reference PID.
	80	* Also referred as @DMX_PES_PCR.
	81	*
	82	* @DMX_PES_AUDIO1: second audio PID.
	83	* @DMX_PES_VIDEO1: second video PID.
	84	* @DMX_PES_TELETEXT1: second teletext PID.
	85	* @DMX_PES_SUBTITLE1: second subtitle PID.
	86	* @DMX_PES_PCR1: second Program Clock Reference PID.
	87	*
	88	* @DMX_PES_AUDIO2: third audio PID.
	89	* @DMX_PES_VIDEO2: third video PID.
	90	* @DMX_PES_TELETEXT2: third teletext PID.
	91	* @DMX_PES_SUBTITLE2: third subtitle PID.
	92	* @DMX_PES_PCR2: third Program Clock Reference PID.
	93	*
	94	* @DMX_PES_AUDIO3: fourth audio PID.
	95	* @DMX_PES_VIDEO3: fourth video PID.
	96	* @DMX_PES_TELETEXT3: fourth teletext PID.
	97	* @DMX_PES_SUBTITLE3: fourth subtitle PID.
	98	* @DMX_PES_PCR3: fourth Program Clock Reference PID.
	99	*
	100	* @DMX_PES_OTHER: any other PID.
	101	*/
c57fd021	102
bb98e6d2	103	enum dmx_ts_pes {
c57fd021 DH	104	DMX_PES_AUDIO0,
	105	DMX_PES_VIDEO0,
	106	DMX_PES_TELETEXT0,
	107	DMX_PES_SUBTITLE0,
	108	DMX_PES_PCR0,
	109
	110	DMX_PES_AUDIO1,
	111	DMX_PES_VIDEO1,
	112	DMX_PES_TELETEXT1,
	113	DMX_PES_SUBTITLE1,
	114	DMX_PES_PCR1,
	115
	116	DMX_PES_AUDIO2,
	117	DMX_PES_VIDEO2,
	118	DMX_PES_TELETEXT2,
	119	DMX_PES_SUBTITLE2,
	120	DMX_PES_PCR2,
	121
	122	DMX_PES_AUDIO3,
	123	DMX_PES_VIDEO3,
	124	DMX_PES_TELETEXT3,
	125	DMX_PES_SUBTITLE3,
	126	DMX_PES_PCR3,
	127
	128	DMX_PES_OTHER
3256b36e	129	};
c57fd021 DH	130
	131	#define DMX_PES_AUDIO DMX_PES_AUDIO0
	132	#define DMX_PES_VIDEO DMX_PES_VIDEO0
	133	#define DMX_PES_TELETEXT DMX_PES_TELETEXT0
	134	#define DMX_PES_SUBTITLE DMX_PES_SUBTITLE0
	135	#define DMX_PES_PCR DMX_PES_PCR0
	136
	137
bb98e6d2 MCC	138
	139	/**
	140	* struct dmx_filter - Specifies a section header filter.
	141	*
	142	* @filter: bit array with bits to be matched at the section header.
	143	* @mask: bits that are valid at the filter bit array.
	144	* @mode: mode of match: if bit is zero, it will match if equal (positive
	145	* match); if bit is one, it will match if the bit is negated.
	146	*
	147	* Note: All arrays in this struct have a size of DMX_FILTER_SIZE (16 bytes).
	148	*/
	149	struct dmx_filter {
c57fd021 DH	150	__u8 filter[DMX_FILTER_SIZE];
	151	__u8 mask[DMX_FILTER_SIZE];
	152	__u8 mode[DMX_FILTER_SIZE];
3256b36e	153	};
c57fd021	154
bb98e6d2 MCC	155	/**
	156	* struct dmx_sct_filter_params - Specifies a section filter.
	157	*
	158	* @pid: PID to be filtered.
	159	* @filter: section header filter, as defined by &struct dmx_filter.
	160	* @timeout: maximum time to filter, in milliseconds.
	161	* @flags: extra flags for the section filter.
	162	*
	163	* Carries the configuration for a MPEG-TS section filter.
	164	*
	165	* The @flags can be:
	166	*
	167	* - %DMX_CHECK_CRC - only deliver sections where the CRC check succeeded;
	168	* - %DMX_ONESHOT - disable the section filter after one section
	169	* has been delivered;
	170	* - %DMX_IMMEDIATE_START - Start filter immediately without requiring a
	171	* :ref:`DMX_START`.
	172	*/
	173	struct dmx_sct_filter_params {
3256b36e MCC	174	__u16 pid;
	175	struct dmx_filter filter;
	176	__u32 timeout;
	177	__u32 flags;
c57fd021 DH	178	#define DMX_CHECK_CRC 1
	179	#define DMX_ONESHOT 2
	180	#define DMX_IMMEDIATE_START 4
c57fd021 DH	181	};
c57fd021 DH	182
bb98e6d2 MCC	183	/**
	184	* struct dmx_pes_filter_params - Specifies Packetized Elementary Stream (PES)
	185	* filter parameters.
	186	*
	187	* @pid: PID to be filtered.
	188	* @input: Demux input, as specified by &enum dmx_input.
	189	* @output: Demux output, as specified by &enum dmx_output.
	190	* @pes_type: Type of the pes filter, as specified by &enum dmx_pes_type.
	191	* @flags: Demux PES flags.
	192	*/
e4faa09b	193	struct dmx_pes_filter_params {
3256b36e MCC	194	__u16 pid;
	195	enum dmx_input input;
	196	enum dmx_output output;
	197	enum dmx_ts_pes pes_type;
	198	__u32 flags;
c57fd021 DH	199	};
c57fd021 DH	200
bb98e6d2 MCC	201	/**
	202	* struct dmx_stc - Stores System Time Counter (STC) information.
	203	*
	204	* @num: input data: number of the STC, from 0 to N.
	205	* @base: output: divisor for STC to get 90 kHz clock.
	206	* @stc: output: stc in @base * 90 kHz units.
	207	*/
c57fd021	208	struct dmx_stc {
bb98e6d2 MCC	209	unsigned int num;
	210	unsigned int base;
	211	__u64 stc;
c57fd021 DH	212	};
c57fd021 DH	213
9c171cdf MCC	214	/**
	215	* enum dmx_buffer_flags - DMX memory-mapped buffer flags
	216	*
	217	* @DMX_BUFFER_FLAG_HAD_CRC32_DISCARD:
	218	* Indicates that the Kernel discarded one or more frames due to wrong
	219	* CRC32 checksum.
	220	* @DMX_BUFFER_FLAG_TEI:
	221	* Indicates that the Kernel has detected a Transport Error indicator
	222	* (TEI) on a filtered pid.
	223	* @DMX_BUFFER_PKT_COUNTER_MISMATCH:
	224	* Indicates that the Kernel has detected a packet counter mismatch
	225	* on a filtered pid.
	226	* @DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED:
	227	* Indicates that the Kernel has detected one or more frame discontinuity.
	228	* @DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR:
	229	* Received at least one packet with a frame discontinuity indicator.
	230	*/
	231
	232	enum dmx_buffer_flags {
	233	DMX_BUFFER_FLAG_HAD_CRC32_DISCARD = 1 << 0,
	234	DMX_BUFFER_FLAG_TEI = 1 << 1,
	235	DMX_BUFFER_PKT_COUNTER_MISMATCH = 1 << 2,
	236	DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED = 1 << 3,
	237	DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR = 1 << 4,
	238	};
	239
57868acc SST	240	/**
	241	* struct dmx_buffer - dmx buffer info
	242	*
	243	* @index: id number of the buffer
	244	* @bytesused: number of bytes occupied by data in the buffer (payload);
	245	* @offset: for buffers with memory == DMX_MEMORY_MMAP;
	246	* offset from the start of the device memory for this plane,
	247	* (or a "cookie" that should be passed to mmap() as offset)
	248	* @length: size in bytes of the buffer
9c171cdf MCC	249	* @flags: bit array of buffer flags as defined by &enum dmx_buffer_flags.
	250	* Filled only at &DMX_DQBUF.
	251	* @count: monotonic counter for filled buffers. Helps to identify
	252	* data stream loses. Filled only at &DMX_DQBUF.
57868acc SST	253	*
	254	* Contains data exchanged by application and driver using one of the streaming
	255	* I/O methods.
9c171cdf MCC	256	*
	257	* Please notice that, for &DMX_QBUF, only @index should be filled.
	258	* On &DMX_DQBUF calls, all fields will be filled by the Kernel.
57868acc SST	259	*/
	260	struct dmx_buffer {
	261	__u32 index;
	262	__u32 bytesused;
	263	__u32 offset;
	264	__u32 length;
9c171cdf MCC	265	__u32 flags;
9c171cdf MCC	266	__u32 count;
57868acc SST	267	};
	268
	269	/**
	270	* struct dmx_requestbuffers - request dmx buffer information
	271	*
	272	* @count: number of requested buffers,
	273	* @size: size in bytes of the requested buffer
	274	*
	275	* Contains data used for requesting a dmx buffer.
	276	* All reserved fields must be set to zero.
	277	*/
	278	struct dmx_requestbuffers {
	279	__u32 count;
	280	__u32 size;
57868acc SST	281	};
	282
	283	/**
	284	* struct dmx_exportbuffer - export of dmx buffer as DMABUF file descriptor
	285	*
	286	* @index: id number of the buffer
	287	* @flags: flags for newly created file, currently only O_CLOEXEC is
	288	* supported, refer to manual of open syscall for more details
	289	* @fd: file descriptor associated with DMABUF (set by driver)
	290	*
	291	* Contains data used for exporting a dmx buffer as DMABUF file descriptor.
	292	* The buffer is identified by a 'cookie' returned by DMX_QUERYBUF
	293	* (identical to the cookie used to mmap() the buffer to userspace). All
	294	* reserved fields must be set to zero. The field reserved0 is expected to
	295	* become a structure 'type' allowing an alternative layout of the structure
	296	* content. Therefore this field should not be used for any other extensions.
	297	*/
	298	struct dmx_exportbuffer {
	299	__u32 index;
	300	__u32 flags;
	301	__s32 fd;
57868acc SST	302	};
57868acc SST	303
c57fd021 DH	304	#define DMX_START _IO('o', 41)
	305	#define DMX_STOP _IO('o', 42)
	306	#define DMX_SET_FILTER _IOW('o', 43, struct dmx_sct_filter_params)
	307	#define DMX_SET_PES_FILTER _IOW('o', 44, struct dmx_pes_filter_params)
	308	#define DMX_SET_BUFFER_SIZE _IO('o', 45)
	309	#define DMX_GET_PES_PIDS _IOR('o', 47, __u16[5])
c57fd021 DH	310	#define DMX_GET_STC _IOWR('o', 50, struct dmx_stc)
	311	#define DMX_ADD_PID _IOW('o', 51, __u16)
	312	#define DMX_REMOVE_PID _IOW('o', 52, __u16)
	313
e4faa09b	314	#if !defined(__KERNEL__)
3256b36e MCC	315
	316	/* This is needed for legacy userspace support */
	317	typedef enum dmx_output dmx_output_t;
	318	typedef enum dmx_input dmx_input_t;
	319	typedef enum dmx_ts_pes dmx_pes_type_t;
	320	typedef struct dmx_filter dmx_filter_t;
3256b36e MCC	321
	322	#endif
	323
57868acc SST	324	#define DMX_REQBUFS _IOWR('o', 60, struct dmx_requestbuffers)
	325	#define DMX_QUERYBUF _IOWR('o', 61, struct dmx_buffer)
	326	#define DMX_EXPBUF _IOWR('o', 62, struct dmx_exportbuffer)
	327	#define DMX_QBUF _IOWR('o', 63, struct dmx_buffer)
	328	#define DMX_DQBUF _IOWR('o', 64, struct dmx_buffer)
	329
	330	#endif /* _DVBDMX_H_ */