/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ /* * dmx.h * * Copyright (C) 2000 Marcus Metzler <[email protected]> * & Ralph Metzler <[email protected]> * for convergence integrated media GmbH */ #ifndef _UAPI_DVBDMX_H_ #define _UAPI_DVBDMX_H_ #include <linux/types.h> #ifndef __KERNEL__ #include <time.h> #endif #define DMX_FILTER_SIZE … /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; #define DMX_PES_AUDIO … #define DMX_PES_VIDEO … #define DMX_PES_TELETEXT … #define DMX_PES_SUBTITLE … #define DMX_PES_PCR … /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; /** * 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 { … }; #define DMX_START … #define DMX_STOP … #define DMX_SET_FILTER … #define DMX_SET_PES_FILTER … #define DMX_SET_BUFFER_SIZE … #define DMX_GET_PES_PIDS … #define DMX_GET_STC … #define DMX_ADD_PID … #define DMX_REMOVE_PID … #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 … #define DMX_QUERYBUF … #define DMX_EXPBUF … #define DMX_QBUF … #define DMX_DQBUF … #endif /* _DVBDMX_H_ */
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