| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef _USB_VIDEO_H_ |
| #define _USB_VIDEO_H_ |
| |
| #include <linux/kernel.h> |
| #include <linux/videodev2.h> |
| |
| /* Compatibility */ |
| #include "uvc_compat.h" |
| |
| /* |
| * Private V4L2 control identifiers. |
| */ |
| |
| #if not defined(V4L2_CID_BACKLIGHT_COMPENSATION) |
| #define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_PRIVATE_BASE+0) |
| #define V4L2_CID_POWER_LINE_FREQUENCY (V4L2_CID_PRIVATE_BASE+1) |
| #define V4L2_CID_SHARPNESS (V4L2_CID_PRIVATE_BASE+2) |
| #define V4L2_CID_HUE_AUTO (V4L2_CID_PRIVATE_BASE+3) |
| |
| #define V4L2_CID_FOCUS_AUTO (V4L2_CID_PRIVATE_BASE+4) |
| #define V4L2_CID_FOCUS_ABSOLUTE (V4L2_CID_PRIVATE_BASE+5) |
| #define V4L2_CID_FOCUS_RELATIVE (V4L2_CID_PRIVATE_BASE+6) |
| |
| #define V4L2_CID_PAN_RELATIVE (V4L2_CID_PRIVATE_BASE+7) |
| #define V4L2_CID_TILT_RELATIVE (V4L2_CID_PRIVATE_BASE+8) |
| #define V4L2_CID_PANTILT_RESET (V4L2_CID_PRIVATE_BASE+9) |
| |
| #define V4L2_CID_EXPOSURE_AUTO (V4L2_CID_PRIVATE_BASE+10) |
| #define V4L2_CID_EXPOSURE_ABSOLUTE (V4L2_CID_PRIVATE_BASE+11) |
| |
| #define V4L2_CID_WHITE_BALANCE_TEMPERATURE_AUTO (V4L2_CID_PRIVATE_BASE+12) |
| #define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_PRIVATE_BASE+13) |
| |
| #endif |
| |
| #define V4L2_CID_PRIVATE_LAST V4L2_CID_WHITE_BALANCE_TEMPERATURE |
| |
| #ifdef __KERNEL__ |
| |
| /* -------------------------------------------------------------------------- |
| * UVC constants |
| */ |
| |
| #define SC_UNDEFINED 0x00 |
| #define SC_VIDEOCONTROL 0x01 |
| #define SC_VIDEOSTREAMING 0x02 |
| #define SC_VIDEO_INTERFACE_COLLECTION 0x03 |
| |
| #define PC_PROTOCOL_UNDEFINED 0x00 |
| |
| #define CS_UNDEFINED 0x20 |
| #define CS_DEVICE 0x21 |
| #define CS_CONFIGURATION 0x22 |
| #define CS_STRING 0x23 |
| #define CS_INTERFACE 0x24 |
| #define CS_ENDPOINT 0x25 |
| |
| /* VideoControl class specific interface descriptor */ |
| #define VC_DESCRIPTOR_UNDEFINED 0x00 |
| #define VC_HEADER 0x01 |
| #define VC_INPUT_TERMINAL 0x02 |
| #define VC_OUTPUT_TERMINAL 0x03 |
| #define VC_SELECTOR_UNIT 0x04 |
| #define VC_PROCESSING_UNIT 0x05 |
| #define VC_EXTENSION_UNIT 0x06 |
| |
| /* VideoStreaming class specific interface descriptor */ |
| #define VS_UNDEFINED 0x00 |
| #define VS_INPUT_HEADER 0x01 |
| #define VS_OUTPUT_HEADER 0x02 |
| #define VS_STILL_IMAGE_FRAME 0x03 |
| #define VS_FORMAT_UNCOMPRESSED 0x04 |
| #define VS_FRAME_UNCOMPRESSED 0x05 |
| #define VS_FORMAT_MJPEG 0x06 |
| #define VS_FRAME_MJPEG 0x07 |
| #define VS_FORMAT_MPEG2TS 0x0a |
| #define VS_FORMAT_DV 0x0c |
| #define VS_COLORFORMAT 0x0d |
| #define VS_FORMAT_FRAME_BASED 0x10 |
| #define VS_FRAME_FRAME_BASED 0x11 |
| #define VS_FORMAT_STREAM_BASED 0x12 |
| |
| /* Endpoint type */ |
| #define EP_UNDEFINED 0x00 |
| #define EP_GENERAL 0x01 |
| #define EP_ENDPOINT 0x02 |
| #define EP_INTERRUPT 0x03 |
| |
| /* Request codes */ |
| #define RC_UNDEFINED 0x00 |
| #define SET_CUR 0x01 |
| #define GET_CUR 0x81 |
| #define GET_MIN 0x82 |
| #define GET_MAX 0x83 |
| #define GET_RES 0x84 |
| #define GET_LEN 0x85 |
| #define GET_INFO 0x86 |
| #define GET_DEF 0x87 |
| |
| /* VideoControl interface controls */ |
| #define VC_CONTROL_UNDEFINED 0x00 |
| #define VC_VIDEO_POWER_MODE_CONTROL 0x01 |
| #define VC_REQUEST_ERROR_CODE_CONTROL 0x02 |
| |
| /* Terminal controls */ |
| #define TE_CONTROL_UNDEFINED 0x00 |
| |
| /* Selector Unit controls */ |
| #define SU_CONTROL_UNDEFINED 0x00 |
| #define SU_INPUT_SELECT_CONTROL 0x01 |
| |
| /* Camera Terminal controls */ |
| #define CT_CONTROL_UNDEFINED 0x00 |
| #define CT_SCANNING_MODE_CONTROL 0x01 |
| #define CT_AE_MODE_CONTROL 0x02 |
| #define CT_AE_PRIORITY_CONTROL 0x03 |
| #define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04 |
| #define CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05 |
| #define CT_FOCUS_ABSOLUTE_CONTROL 0x06 |
| #define CT_FOCUS_RELATIVE_CONTROL 0x07 |
| #define CT_FOCUS_AUTO_CONTROL 0x08 |
| #define CT_IRIS_ABSOLUTE_CONTROL 0x09 |
| #define CT_IRIS_RELATIVE_CONTROL 0x0a |
| #define CT_ZOOM_ABSOLUTE_CONTROL 0x0b |
| #define CT_ZOOM_RELATIVE_CONTROL 0x0c |
| #define CT_PANTILT_ABSOLUTE_CONTROL 0x0d |
| #define CT_PANTILT_RELATIVE_CONTROL 0x0e |
| #define CT_ROLL_ABSOLUTE_CONTROL 0x0f |
| #define CT_ROLL_RELATIVE_CONTROL 0x10 |
| #define CT_PRIVACY_CONTROL 0x11 |
| |
| /* Processing Unit controls */ |
| #define PU_CONTROL_UNDEFINED 0x00 |
| #define PU_BACKLIGHT_COMPENSATION_CONTROL 0x01 |
| #define PU_BRIGHTNESS_CONTROL 0x02 |
| #define PU_CONTRAST_CONTROL 0x03 |
| #define PU_GAIN_CONTROL 0x04 |
| #define PU_POWER_LINE_FREQUENCY_CONTROL 0x05 |
| #define PU_HUE_CONTROL 0x06 |
| #define PU_SATURATION_CONTROL 0x07 |
| #define PU_SHARPNESS_CONTROL 0x08 |
| #define PU_GAMMA_CONTROL 0x09 |
| #define PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0a |
| #define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0b |
| #define PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0c |
| #define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0d |
| #define PU_DIGITAL_MULTIPLIER_CONTROL 0x0e |
| #define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0f |
| #define PU_HUE_AUTO_CONTROL 0x10 |
| #define PU_ANALOG_VIDEO_STANDARD_CONTROL 0x11 |
| #define PU_ANALOG_LOCK_STATUS_CONTROL 0x12 |
| |
| #define LXU_MOTOR_PANTILT_RELATIVE_CONTROL 0x01 |
| #define LXU_MOTOR_PANTILT_RESET_CONTROL 0x02 |
| |
| /* VideoStreaming interface controls */ |
| #define VS_CONTROL_UNDEFINED 0x00 |
| #define VS_PROBE_CONTROL 0x01 |
| #define VS_COMMIT_CONTROL 0x02 |
| #define VS_STILL_PROBE_CONTROL 0x03 |
| #define VS_STILL_COMMIT_CONTROL 0x04 |
| #define VS_STILL_IMAGE_TRIGGER_CONTROL 0x05 |
| #define VS_STREAM_ERROR_CODE_CONTROL 0x06 |
| #define VS_GENERATE_KEY_FRAME_CONTROL 0x07 |
| #define VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08 |
| #define VS_SYNC_DELAY_CONTROL 0x09 |
| |
| #define TT_VENDOR_SPECIFIC 0x0100 |
| #define TT_STREAMING 0x0101 |
| |
| /* Input Terminal types */ |
| #define ITT_VENDOR_SPECIFIC 0x0200 |
| #define ITT_CAMERA 0x0201 |
| #define ITT_MEDIA_TRANSPORT_INPUT 0x0202 |
| |
| /* Output Terminal types */ |
| #define OTT_VENDOR_SPECIFIC 0x0300 |
| #define OTT_DISPLAY 0x0301 |
| #define OTT_MEDIA_TRANSPORT_OUTPUT 0x0302 |
| |
| #define EXTERNAL_VENDOR_SPECIFIC 0x0400 |
| #define COMPOSITE_CONNECTOR 0x0401 |
| #define SVIDEO_CONNECTOR 0x0402 |
| #define COMPONENT_CONNECTOR 0x0403 |
| |
| #define UVC_ENTITY_IS_UNIT(entity) ((entity->type & 0xff00) == 0) |
| #define UVC_ENTITY_IS_TERM(entity) ((entity->type & 0xff00) != 0) |
| #define UVC_ENTITY_IS_ITERM(entity) ((entity->type & 0xff00) == ITT_VENDOR_SPECIFIC) |
| #define UVC_ENTITY_IS_OTERM(entity) ((entity->type & 0xff00) == OTT_VENDOR_SPECIFIC) |
| |
| /* ------------------------------------------------------------------------ |
| * GUIDs |
| */ |
| #define UVC_GUID_UVC_CAMERA {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01} |
| #define UVC_GUID_UVC_OUTPUT {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02} |
| #define UVC_GUID_UVC_PROCESSING {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01} |
| #define UVC_GUID_UVC_SELECTOR {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02} |
| |
| #define UVC_GUID_LOGITECH_XU1 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ |
| 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1d} |
| #define UVC_GUID_LOGITECH_XU2 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ |
| 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e} |
| #define UVC_GUID_LOGITECH_XU3 {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ |
| 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1f} |
| #define UVC_GUID_LOGITECH_MOTOR {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ |
| 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x56} |
| #define UVC_GUID_LOGITECH_DEV_INFO \ |
| {0x82, 0x06, 0x61, 0x63, 0x70, 0x50, 0xab, 0x49, \ |
| 0xb8, 0xcc, 0xb3, 0x85, 0x5e, 0x8d, 0x22, 0x1e} |
| |
| #define UVC_GUID_FORMAT_MJPEG {0x4d, 0x4a, 0x50, 0x47, 0x00, 0x00, 0x10, 0x00, \ |
| 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} |
| #define UVC_GUID_FORMAT_YUY2 {0x59, 0x55, 0x59, 0x32, 0x00, 0x00, 0x10, 0x00, \ |
| 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} |
| #define UVC_GUID_FORMAT_NV12 {0x4e, 0x56, 0x31, 0x32, 0x00, 0x00, 0x10, 0x00, \ |
| 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} |
| |
| |
| /* ------------------------------------------------------------------------ |
| * Driver specific constants. |
| */ |
| |
| #define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0) |
| |
| /* Number of isochronous URBs. */ |
| #define UVC_URBS 5 |
| /* Maximum number of packets per isochronous URB. */ |
| #define UVC_MAX_ISO_PACKETS 40 |
| /* Maximum frame size in bytes, for sanity checking. */ |
| #define UVC_MAX_FRAME_SIZE (16*1024*1024) |
| /* Maximum number of video buffers. */ |
| #define UVC_MAX_VIDEO_BUFFERS 32 |
| |
| #define UVC_CTRL_TIMEOUT 300 |
| |
| /* Devices quirks */ |
| #define UVC_QUIRK_STATUS_INTERVAL 0x00000001 |
| |
| /* ------------------------------------------------------------------------ |
| * Structures. |
| */ |
| |
| struct uvc_device; |
| |
| /* TODO: Put the most frequently accessed fields at the beginning of |
| * structures to maximize cache efficiency. |
| */ |
| struct uvc_streaming_control |
| { |
| __u16 bmHint; |
| __u8 bFormatIndex; |
| __u8 bFrameIndex; |
| __u32 dwFrameInterval; |
| __u16 wKeyFrameRate; |
| __u16 wPFrameRate; |
| __u16 wCompQuality; |
| __u16 wCompWindowSize; |
| __u16 wDelay; |
| __u32 dwMaxVideoFrameSize; |
| __u32 dwMaxPayloadTransferSize; |
| __u32 dwClockFrequency; |
| __u8 bmFramingInfo; |
| __u8 bPreferedVersion; |
| __u8 bMinVersion; |
| __u8 bMaxVersion; |
| }; |
| |
| struct uvc_menu_info |
| { |
| __u32 index; |
| __u8 name[32]; |
| }; |
| |
| struct uvc_control_info |
| { |
| struct list_head list; |
| struct list_head mappings; |
| |
| __u8 entity[16]; |
| __u8 index; |
| __u8 selector; |
| |
| __u8 size; |
| __u8 flags; |
| }; |
| |
| /* Data types for UVC control data */ |
| enum uvc_control_data_type |
| { |
| UVC_CTRL_DATA_TYPE_RAW = 0, |
| UVC_CTRL_DATA_TYPE_SIGNED, |
| UVC_CTRL_DATA_TYPE_UNSIGNED, |
| UVC_CTRL_DATA_TYPE_BOOLEAN, |
| UVC_CTRL_DATA_TYPE_ENUM, |
| UVC_CTRL_DATA_TYPE_BITMASK, |
| }; |
| |
| struct uvc_control_mapping |
| { |
| struct list_head list; |
| |
| struct uvc_control_info *ctrl; |
| |
| __u32 id; |
| __u8 name[32]; |
| __u8 entity[16]; |
| __u8 selector; |
| |
| __u8 size; |
| __u8 offset; |
| enum v4l2_ctrl_type v4l2_type; |
| enum uvc_control_data_type data_type; |
| |
| struct uvc_menu_info *menu_info; |
| __u32 menu_count; |
| }; |
| |
| struct uvc_control |
| { |
| struct uvc_entity *entity; |
| struct uvc_control_info *info; |
| |
| __u8 index; /* Used to match the uvc_control entry with a uvc_control_info. */ |
| __u8 dirty : 1, |
| loaded : 1; |
| |
| __u8 *data; |
| }; |
| |
| struct uvc_format_desc |
| { |
| __u8 guid[16]; |
| __u32 fcc; |
| }; |
| |
| /* The term 'entity' refers to both UVC units and UVC terminals. |
| * |
| * The type field is either the terminal type (wTerminalType in the terminal |
| * descriptor), or the unit type (bDescriptorSubtype in the unit descriptor). |
| * As the bDescriptorSubtype field is one byte long, the type value will |
| * always have a null MSB for units. All terminal types defined by the UVC |
| * specification have a non-null MSB, so it is safe to use the MSB to |
| * differentiate between units and terminals as long as the descriptor parsing |
| * code makes sur terminal types have a non-null MSB. |
| */ |
| |
| struct uvc_entity |
| { |
| struct list_head list; |
| |
| __u8 id; |
| __u16 type; |
| char name[64]; |
| |
| union |
| { |
| struct |
| { |
| __u16 wObjectiveFocalLengthMin; |
| __u16 wObjectiveFocalLengthMax; |
| __u16 wOcularFocalLength; |
| __u8 bControlSize; |
| __u8 *bmControls; |
| } camera; |
| |
| struct |
| { |
| __u8 bSourceID; |
| } output; |
| |
| struct |
| { |
| __u8 bSourceID; |
| __u16 wMaxMultiplier; |
| __u8 bControlSize; |
| __u8 *bmControls; |
| __u8 bmVideoStandards; |
| } processing; |
| |
| struct |
| { |
| __u8 bNrInPins; |
| __u8 *baSourceID; |
| } selector; |
| |
| struct |
| { |
| __u8 guidExtensionCode[16]; |
| __u8 bNumControls; |
| __u8 bNrInPins; |
| __u8 *baSourceID; |
| __u8 bControlSize; |
| __u8 *bmControls; |
| __u8 *bmControlsType; |
| } extension; |
| }; |
| |
| unsigned int ncontrols; |
| struct uvc_control *controls; |
| }; |
| |
| struct uvc_frame |
| { |
| __u8 bFrameIndex; |
| __u8 bmCapabilities; |
| __u16 wWidth; |
| __u16 wHeight; |
| __u32 dwMinBitRate; |
| __u32 dwMaxBitRate; |
| __u32 dwMaxVideoFrameBufferSize; |
| __u8 bFrameIntervalType; |
| __u32 dwDefaultFrameInterval; |
| __u32 *dwFrameInterval; |
| }; |
| |
| struct uvc_format |
| { |
| __u8 type; |
| __u8 index; |
| __u8 bpp; |
| __u8 colorspace; |
| __u32 fcc; |
| __u32 flags; |
| |
| char name[32]; |
| |
| unsigned int nframes; |
| struct uvc_frame *frame; |
| }; |
| |
| struct uvc_input_header |
| { |
| __u8 bNumFormats; |
| __u8 bEndpointAddress; |
| __u8 bmInfo; |
| __u8 bTerminalLink; |
| __u8 bStillCaptureMethod; |
| __u8 bTriggerSupport; |
| __u8 bTriggerUsage; |
| __u8 bControlSize; |
| __u8 *bmaControls; |
| }; |
| |
| struct uvc_output_header |
| { |
| }; |
| |
| struct uvc_streaming |
| { |
| struct list_head list; |
| |
| struct usb_interface *intf; |
| int intfnum; |
| __u16 maxpsize; |
| |
| union |
| { |
| struct uvc_input_header input; |
| struct uvc_output_header output; |
| }; |
| |
| unsigned int nformats; |
| struct uvc_format *format; |
| |
| struct uvc_streaming_control ctrl; |
| struct uvc_format *cur_format; |
| struct uvc_frame *cur_frame; |
| |
| struct mutex mutex; |
| }; |
| |
| enum uvc_stream_state |
| { |
| UVC_STREAM_OFF = 0, |
| UVC_STREAM_INTERRUPT = 1, |
| UVC_STREAM_ON = 2, |
| }; |
| |
| enum uvc_buffer_state |
| { |
| UVC_BUF_STATE_IDLE = 0, |
| UVC_BUF_STATE_QUEUED = 1, |
| UVC_BUF_STATE_ACTIVE = 2, |
| UVC_BUF_STATE_DONE = 3, |
| UVC_BUF_STATE_ERROR = 4, |
| }; |
| |
| struct uvc_buffer |
| { |
| unsigned int size; |
| unsigned long vma_use_count; |
| struct list_head stream; |
| |
| /* Touched by interrupt handler. */ |
| struct v4l2_buffer buf; |
| struct list_head queue; |
| wait_queue_head_t wait; |
| enum uvc_buffer_state state; |
| }; |
| |
| struct uvc_video_queue |
| { |
| void *mem; |
| unsigned int streaming; |
| __u32 sequence; |
| __u8 last_fid; |
| |
| unsigned int count; |
| struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS]; |
| struct mutex mutex; |
| spinlock_t irqlock; |
| |
| struct list_head mainqueue; |
| struct list_head irqqueue; |
| }; |
| |
| struct uvc_video_device |
| { |
| struct uvc_device *dev; |
| struct video_device *vdev; |
| atomic_t active; |
| |
| enum uvc_stream_state stream; |
| |
| struct uvc_entity *iterm; |
| struct uvc_entity *oterm; |
| struct uvc_entity *processing; |
| struct uvc_entity *extension[8]; |
| struct mutex ctrl_mutex; |
| |
| struct uvc_video_queue queue; |
| |
| struct uvc_streaming *streaming; |
| |
| struct urb *urb[UVC_URBS]; |
| char *urb_buffer[UVC_URBS]; |
| }; |
| |
| enum uvc_device_state |
| { |
| UVC_DEV_DISCONNECTED = 1, |
| }; |
| |
| struct uvc_device |
| { |
| struct usb_device *udev; |
| struct usb_interface *intf; |
| __u32 quirks; |
| int intfnum; |
| |
| enum uvc_device_state state; |
| struct kref kref; |
| struct list_head list; |
| |
| /* Video control interface */ |
| __u16 uvc_version; |
| __u32 clock_frequency; |
| |
| struct list_head entities; |
| |
| struct uvc_video_device video; |
| |
| /* Status Interrupt Endpoint */ |
| struct usb_host_endpoint *int_ep; |
| struct urb *int_urb; |
| __u8 status[16]; |
| |
| /* Video Streaming interfaces */ |
| struct list_head streaming; |
| }; |
| |
| enum uvc_handle_state |
| { |
| UVC_HANDLE_PASSIVE = 0, |
| UVC_HANDLE_ACTIVE = 1, |
| }; |
| |
| struct uvc_fh |
| { |
| struct uvc_video_device *device; |
| enum uvc_handle_state state; |
| }; |
| |
| struct uvc_driver |
| { |
| struct usb_driver driver; |
| |
| struct mutex open_mutex; /* protects from open/disconnect race */ |
| |
| struct list_head devices; /* struct uvc_device list */ |
| struct list_head controls; /* struct uvc_control_info list */ |
| struct mutex ctrl_mutex; /* protects controls and devices lists */ |
| }; |
| |
| /* ------------------------------------------------------------------------ |
| * Debugging, printing and logging |
| */ |
| |
| #define UVC_TRACE_PROBE (1 << 0) |
| #define UVC_TRACE_DESCR (1 << 1) |
| #define UVC_TRACE_CONTROL (1 << 2) |
| #define UVC_TRACE_FORMAT (1 << 3) |
| #define UVC_TRACE_CAPTURE (1 << 4) |
| #define UVC_TRACE_CALLS (1 << 5) |
| #define UVC_TRACE_IOCTL (1 << 6) |
| #define UVC_TRACE_FRAME (1 << 7) |
| |
| extern unsigned int uvc_trace_param; |
| |
| #define uvc_trace(flag, msg...) \ |
| do { \ |
| if (uvc_trace_param & flag) \ |
| printk(KERN_DEBUG "uvcvideo: " msg); \ |
| } while(0) |
| |
| #define uvc_printk(level, msg...) \ |
| printk(level "uvcvideo: " msg) |
| |
| #define UVC_GUID_FORMAT "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x" |
| #define UVC_GUID_ARGS(guid) \ |
| (guid)[3], (guid)[2], (guid)[1], (guid)[0], \ |
| (guid)[5], (guid)[4], \ |
| (guid)[7], (guid)[6], \ |
| (guid)[8], (guid)[9], \ |
| (guid)[10], (guid)[11], (guid)[12], \ |
| (guid)[13], (guid)[14], (guid)[15] |
| |
| /* -------------------------------------------------------------------------- |
| * Internal functions. |
| */ |
| |
| /* Core driver */ |
| extern struct uvc_driver uvc_driver; |
| extern void uvc_delete(struct kref *kref); |
| |
| /* Video buffers queue management. */ |
| extern void uvc_queue_init(struct uvc_video_queue *queue); |
| extern int uvc_alloc_buffers(struct uvc_video_queue *queue, |
| unsigned int nbuffers, unsigned int buflength); |
| extern int uvc_free_buffers(struct uvc_video_queue *queue); |
| extern void uvc_query_buffer(struct uvc_buffer *buf, |
| struct v4l2_buffer *v4l2_buf); |
| extern int uvc_queue_buffer(struct uvc_video_queue *queue, |
| struct v4l2_buffer *v4l2_buf); |
| extern int uvc_dequeue_buffer(struct uvc_video_queue *queue, |
| struct v4l2_buffer *v4l2_buf, int nonblocking); |
| extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable); |
| extern void uvc_queue_cancel(struct uvc_video_queue *queue); |
| extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, |
| struct uvc_buffer *buf); |
| |
| /* V4L2 interface */ |
| extern struct file_operations uvc_fops; |
| |
| /* Video */ |
| extern int uvc_video_init(struct uvc_video_device *video); |
| extern int uvc_video_enable(struct uvc_video_device *video, int enable); |
| extern int uvc_probe_video(struct uvc_video_device *video, |
| struct uvc_streaming_control *probe); |
| extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, |
| __u8 intfnum, __u8 cs, void *data, __u16 size); |
| extern int uvc_set_video_ctrl(struct uvc_video_device *video, |
| struct uvc_streaming_control *ctrl, int probe); |
| extern int uvc_init_status(struct uvc_device *dev); |
| |
| /* Controls */ |
| extern struct uvc_control *uvc_find_control(struct uvc_video_device *video, |
| __u32 v4l2_id, struct uvc_control_mapping **mapping); |
| extern int uvc_query_v4l2_ctrl(struct uvc_video_device *video, |
| struct v4l2_queryctrl *v4l2_ctrl); |
| |
| extern void uvc_ctrl_add_info(struct uvc_control_info *info); |
| extern int uvc_ctrl_init_device(struct uvc_device *dev); |
| extern void uvc_ctrl_cleanup_device(struct uvc_device *dev); |
| extern void uvc_ctrl_init(void); |
| |
| extern int uvc_ctrl_begin(struct uvc_video_device *video); |
| extern int __uvc_ctrl_commit(struct uvc_video_device *video, int rollback); |
| static inline int uvc_ctrl_commit(struct uvc_video_device *video) |
| { |
| return __uvc_ctrl_commit(video, 0); |
| } |
| static inline int uvc_ctrl_rollback(struct uvc_video_device *video) |
| { |
| return __uvc_ctrl_commit(video, 1); |
| } |
| |
| extern int uvc_ctrl_get(struct uvc_video_device *video, |
| struct v4l2_ext_control *xctrl); |
| extern int uvc_ctrl_set(struct uvc_video_device *video, |
| struct v4l2_ext_control *xctrl); |
| |
| /* Utility functions */ |
| extern void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, |
| unsigned int n_terms, unsigned int threshold); |
| extern uint32_t uvc_fraction_to_interval(uint32_t numerator, |
| uint32_t denominator); |
| extern struct usb_host_endpoint *uvc_find_endpoint( |
| struct usb_host_interface *alts, __u8 epaddr); |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif |
| |
