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media.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Multimedia device API * * Copyright (C) 2010 Nokia Corporation * * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> * Sakari Ailus <sakari.ailus@iki.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * 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. */ #ifndef __LINUX_MEDIA_H #define __LINUX_MEDIA_H #include <stdint.h> #include <linux/ioctl.h> #include <linux/types.h> #include <linux/version.h> struct media_device_info { char driver[16]; char model[32]; char serial[40]; char bus_info[32]; __u32 media_version; __u32 hw_revision; __u32 driver_version; __u32 reserved[31]; }; /* * Base number ranges for entity functions * * NOTE: Userspace should not rely on these ranges to identify a group * of function types, as newer functions can be added with any name within * the full u32 range. * * Some older functions use the MEDIA_ENT_F_OLD_*_BASE range. Do not * change this, this is for backwards compatibility. When adding new * functions always use MEDIA_ENT_F_BASE. */ #define MEDIA_ENT_F_BASE 0x00000000 #define MEDIA_ENT_F_OLD_BASE 0x00010000 #define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000 /* * Initial value to be used when a new entity is created * Drivers should change it to something useful. */ #define MEDIA_ENT_F_UNKNOWN MEDIA_ENT_F_BASE /* * Subdevs are initialized with MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN in order * to preserve backward compatibility. Drivers must change to the proper * subdev type before registering the entity. */ #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE /* * DVB entity functions */ #define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 0x00001) #define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 0x00002) #define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 0x00003) #define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 0x00004) /* * I/O entity functions */ #define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1) #define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 0x01001) #define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 0x01002) #define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 0x01003) /* * Sensor functions */ #define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1) #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2) #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3) /* * Video decoder functions */ #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4) #define MEDIA_ENT_F_DTV_DECODER (MEDIA_ENT_F_BASE + 0x6001) /* * Digital TV, analog TV, radio and/or software defined radio tuner functions. * * It is a responsibility of the master/bridge drivers to add connectors * and links for MEDIA_ENT_F_TUNER. Please notice that some old tuners * may require the usage of separate I2C chips to decode analog TV signals, * when the master/bridge chipset doesn't have its own TV standard decoder. * On such cases, the IF-PLL staging is mapped via one or two entities: * MEDIA_ENT_F_IF_VID_DECODER and/or MEDIA_ENT_F_IF_AUD_DECODER. */ #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5) /* * Analog TV IF-PLL decoder functions * * It is a responsibility of the master/bridge drivers to create links * for MEDIA_ENT_F_IF_VID_DECODER and MEDIA_ENT_F_IF_AUD_DECODER. */ #define MEDIA_ENT_F_IF_VID_DECODER (MEDIA_ENT_F_BASE + 0x02001) #define MEDIA_ENT_F_IF_AUD_DECODER (MEDIA_ENT_F_BASE + 0x02002) /* * Audio entity functions */ #define MEDIA_ENT_F_AUDIO_CAPTURE (MEDIA_ENT_F_BASE + 0x03001) #define MEDIA_ENT_F_AUDIO_PLAYBACK (MEDIA_ENT_F_BASE + 0x03002) #define MEDIA_ENT_F_AUDIO_MIXER (MEDIA_ENT_F_BASE + 0x03003) /* * Processing entity functions */ #define MEDIA_ENT_F_PROC_VIDEO_COMPOSER (MEDIA_ENT_F_BASE + 0x4001) #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER (MEDIA_ENT_F_BASE + 0x4002) #define MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV (MEDIA_ENT_F_BASE + 0x4003) #define MEDIA_ENT_F_PROC_VIDEO_LUT (MEDIA_ENT_F_BASE + 0x4004) #define MEDIA_ENT_F_PROC_VIDEO_SCALER (MEDIA_ENT_F_BASE + 0x4005) #define MEDIA_ENT_F_PROC_VIDEO_STATISTICS (MEDIA_ENT_F_BASE + 0x4006) /* * Switch and bridge entity functions */ #define MEDIA_ENT_F_VID_MUX (MEDIA_ENT_F_BASE + 0x5001) #define MEDIA_ENT_F_VID_IF_BRIDGE (MEDIA_ENT_F_BASE + 0x5002) /* Entity flags */ #define MEDIA_ENT_FL_DEFAULT (1 << 0) #define MEDIA_ENT_FL_CONNECTOR (1 << 1) /* OR with the entity id value to find the next entity */ #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) struct media_entity_desc { __u32 id; char name[32]; __u32 type; __u32 revision; __u32 flags; __u32 group_id; __u16 pads; __u16 links; __u32 reserved[4]; union { /* Node specifications */ struct { __u32 major; __u32 minor; } dev; /* * TODO: this shouldn't have been added without * actual drivers that use this. When the first real driver * appears that sets this information, special attention * should be given whether this information is 1) enough, and * 2) can deal with udev rules that rename devices. The struct * dev would not be sufficient for this since that does not * contain the subdevice information. In addition, struct dev * can only refer to a single device, and not to multiple (e.g. * pcm and mixer devices). */ struct { __u32 card; __u32 device; __u32 subdevice; } alsa; /* * DEPRECATED: previous node specifications. Kept just to * avoid breaking compilation. Use media_entity_desc.dev * instead. */ struct { __u32 major; __u32 minor; } v4l; struct { __u32 major; __u32 minor; } fb; int dvb; /* Sub-device specifications */ /* Nothing needed yet */ __u8 raw[184]; }; }; #define MEDIA_PAD_FL_SINK (1 << 0) #define MEDIA_PAD_FL_SOURCE (1 << 1) #define MEDIA_PAD_FL_MUST_CONNECT (1 << 2) struct media_pad_desc { __u32 entity; /* entity ID */ __u16 index; /* pad index */ __u32 flags; /* pad flags */ __u32 reserved[2]; }; #define MEDIA_LNK_FL_ENABLED (1 << 0) #define MEDIA_LNK_FL_IMMUTABLE (1 << 1) #define MEDIA_LNK_FL_DYNAMIC (1 << 2) #define MEDIA_LNK_FL_LINK_TYPE (0xf << 28) # define MEDIA_LNK_FL_DATA_LINK (0 << 28) # define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28) struct media_link_desc { struct media_pad_desc source; struct media_pad_desc sink; __u32 flags; __u32 reserved[2]; }; struct media_links_enum { __u32 entity; /* Should have enough room for pads elements */ struct media_pad_desc *pads; /* Should have enough room for links elements */ struct media_link_desc *links; __u32 reserved[4]; }; /* Interface type ranges */ #define MEDIA_INTF_T_DVB_BASE 0x00000100 #define MEDIA_INTF_T_V4L_BASE 0x00000200 /* Interface types */ #define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE) #define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1) #define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2) #define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3) #define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4) #define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE) #define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1) #define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2) #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3) #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4) #define MEDIA_INTF_T_V4L_TOUCH (MEDIA_INTF_T_V4L_BASE + 5) /* * MC next gen API definitions */ struct media_v2_entity { __u32 id; char name[64]; __u32 function; /* Main function of the entity */ __u32 reserved[6]; } __attribute__ ((packed)); /* Should match the specific fields at media_intf_devnode */ struct media_v2_intf_devnode { __u32 major; __u32 minor; } __attribute__ ((packed)); struct media_v2_interface { __u32 id; __u32 intf_type; __u32 flags; __u32 reserved[9]; union { struct media_v2_intf_devnode devnode; __u32 raw[16]; }; } __attribute__ ((packed)); struct media_v2_pad { __u32 id; __u32 entity_id; __u32 flags; __u32 reserved[5]; } __attribute__ ((packed)); struct media_v2_link { __u32 id; __u32 source_id; __u32 sink_id; __u32 flags; __u32 reserved[6]; } __attribute__ ((packed)); struct media_v2_topology { __u64 topology_version; __u32 num_entities; __u32 reserved1; __u64 ptr_entities; __u32 num_interfaces; __u32 reserved2; __u64 ptr_interfaces; __u32 num_pads; __u32 reserved3; __u64 ptr_pads; __u32 num_links; __u32 reserved4; __u64 ptr_links; } __attribute__ ((packed)); /* ioctls */ #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc) #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology) /* * Legacy symbols used to avoid userspace compilation breakages. * Do not use any of this in new applications! * * Those symbols map the entity function into types and should be * used only on legacy programs for legacy hardware. Don't rely * on those for MEDIA_IOC_G_TOPOLOGY. */ #define MEDIA_ENT_TYPE_SHIFT 16 #define MEDIA_ENT_TYPE_MASK 0x00ff0000 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff #define MEDIA_ENT_T_DEVNODE_UNKNOWN (MEDIA_ENT_F_OLD_BASE | \ MEDIA_ENT_SUBTYPE_MASK) #define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE #define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_F_OLD_BASE + 2) #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_F_OLD_BASE + 3) #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_F_OLD_BASE + 4) #define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN #define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L #define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH #define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS #define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER #define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER /* * There is still no ALSA support in the media controller. These * defines should not have been added and we leave them here only * in case some application tries to use these defines. */ #define MEDIA_INTF_T_ALSA_BASE 0x00000300 #define MEDIA_INTF_T_ALSA_PCM_CAPTURE (MEDIA_INTF_T_ALSA_BASE) #define MEDIA_INTF_T_ALSA_PCM_PLAYBACK (MEDIA_INTF_T_ALSA_BASE + 1) #define MEDIA_INTF_T_ALSA_CONTROL (MEDIA_INTF_T_ALSA_BASE + 2) #define MEDIA_INTF_T_ALSA_COMPRESS (MEDIA_INTF_T_ALSA_BASE + 3) #define MEDIA_INTF_T_ALSA_RAWMIDI (MEDIA_INTF_T_ALSA_BASE + 4) #define MEDIA_INTF_T_ALSA_HWDEP (MEDIA_INTF_T_ALSA_BASE + 5) #define MEDIA_INTF_T_ALSA_SEQUENCER (MEDIA_INTF_T_ALSA_BASE + 6) #define MEDIA_INTF_T_ALSA_TIMER (MEDIA_INTF_T_ALSA_BASE + 7) /* Obsolete symbol for media_version, no longer used in the kernel */ #define MEDIA_API_VERSION KERNEL_VERSION(0, 1, 0) #endif /* __LINUX_MEDIA_H */
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