From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from perceval.ideasonboard.com ([95.142.166.194]:49390 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754192Ab1AGQAE (ORCPT ); Fri, 7 Jan 2011 11:00:04 -0500 From: Laurent Pinchart To: linux-media@vger.kernel.org Subject: [PATCH 5/5] uvcvideo: Move uvcvideo.h to include/linux Date: Fri, 7 Jan 2011 17:00:40 +0100 Message-Id: <1294416040-28371-6-git-send-email-laurent.pinchart@ideasonboard.com> In-Reply-To: <1294416040-28371-1-git-send-email-laurent.pinchart@ideasonboard.com> References: <1294416040-28371-1-git-send-email-laurent.pinchart@ideasonboard.com> List-ID: Sender: The header file is used by userspace applications, make it public. Signed-off-by: Laurent Pinchart --- Documentation/ioctl/ioctl-number.txt | 2 +- drivers/media/video/uvc/uvc_ctrl.c | 2 +- drivers/media/video/uvc/uvc_driver.c | 3 +- drivers/media/video/uvc/uvc_isight.c | 3 +- drivers/media/video/uvc/uvc_queue.c | 3 +- drivers/media/video/uvc/uvc_status.c | 3 +- drivers/media/video/uvc/uvc_v4l2.c | 3 +- drivers/media/video/uvc/uvc_video.c | 3 +- drivers/media/video/uvc/uvcvideo.h | 668 ---------------------------------- include/linux/Kbuild | 1 + include/linux/uvcvideo.h | 667 +++++++++++++++++++++++++++++++++ 11 files changed, 676 insertions(+), 682 deletions(-) delete mode 100644 drivers/media/video/uvc/uvcvideo.h create mode 100644 include/linux/uvcvideo.h diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index d6a63c7..ff41158 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt @@ -165,7 +165,7 @@ Code Seq#(hex) Include File Comments 'T' all arch/x86/include/asm/ioctls.h conflict! 'T' C0-DF linux/if_tun.h conflict! 'U' all sound/asound.h conflict! -'U' 00-0F drivers/media/video/uvc/uvcvideo.h conflict! +'U' 00-0F linux/uvcvideo.h conflict! 'U' 00-CF linux/uinput.h conflict! 'U' 00-EF linux/usbdevice_fs.h 'U' C0-CF drivers/bluetooth/hci_uart.h diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c index d6fe13d..185ae90 100644 --- a/drivers/media/video/uvc/uvc_ctrl.c +++ b/drivers/media/video/uvc/uvc_ctrl.c @@ -17,12 +17,12 @@ #include #include #include +#include #include #include #include #include -#include "uvcvideo.h" #define UVC_CTRL_DATA_CURRENT 0 #define UVC_CTRL_DATA_BACKUP 1 diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index a1e9dfb..e41285a 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -36,8 +37,6 @@ #include -#include "uvcvideo.h" - #define DRIVER_AUTHOR "Laurent Pinchart " \ "" #define DRIVER_DESC "USB Video Class driver" diff --git a/drivers/media/video/uvc/uvc_isight.c b/drivers/media/video/uvc/uvc_isight.c index 74bbe8f..8217c5d 100644 --- a/drivers/media/video/uvc/uvc_isight.c +++ b/drivers/media/video/uvc/uvc_isight.c @@ -16,8 +16,7 @@ #include #include #include - -#include "uvcvideo.h" +#include /* Built-in iSight webcams implements most of UVC 1.0 except a * different packet format. Instead of sending a header at the diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index f14581b..36f3c58 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -16,13 +16,12 @@ #include #include #include +#include #include #include #include #include -#include "uvcvideo.h" - /* ------------------------------------------------------------------------ * Video buffers queue management. * diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c index b749277..905d3eb 100644 --- a/drivers/media/video/uvc/uvc_status.c +++ b/drivers/media/video/uvc/uvc_status.c @@ -16,8 +16,7 @@ #include #include #include - -#include "uvcvideo.h" +#include /* -------------------------------------------------------------------------- * Input device diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index c03046a..ac0fbac 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -26,8 +27,6 @@ #include #include -#include "uvcvideo.h" - /* ------------------------------------------------------------------------ * UVC ioctls */ diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 5673d67..43f955e 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -24,8 +25,6 @@ #include -#include "uvcvideo.h" - /* ------------------------------------------------------------------------ * UVC Controls */ diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h deleted file mode 100644 index e6684c2..0000000 --- a/drivers/media/video/uvc/uvcvideo.h +++ /dev/null @@ -1,668 +0,0 @@ -#ifndef _USB_VIDEO_H_ -#define _USB_VIDEO_H_ - -#include -#include - -/* - * Dynamic controls - */ - -/* Data types for UVC control data */ -#define UVC_CTRL_DATA_TYPE_RAW 0 -#define UVC_CTRL_DATA_TYPE_SIGNED 1 -#define UVC_CTRL_DATA_TYPE_UNSIGNED 2 -#define UVC_CTRL_DATA_TYPE_BOOLEAN 3 -#define UVC_CTRL_DATA_TYPE_ENUM 4 -#define UVC_CTRL_DATA_TYPE_BITMASK 5 - -/* Control flags */ -#define UVC_CTRL_FLAG_SET_CUR (1 << 0) -#define UVC_CTRL_FLAG_GET_CUR (1 << 1) -#define UVC_CTRL_FLAG_GET_MIN (1 << 2) -#define UVC_CTRL_FLAG_GET_MAX (1 << 3) -#define UVC_CTRL_FLAG_GET_RES (1 << 4) -#define UVC_CTRL_FLAG_GET_DEF (1 << 5) -/* Control should be saved at suspend and restored at resume. */ -#define UVC_CTRL_FLAG_RESTORE (1 << 6) -/* Control can be updated by the camera. */ -#define UVC_CTRL_FLAG_AUTO_UPDATE (1 << 7) - -#define UVC_CTRL_FLAG_GET_RANGE \ - (UVC_CTRL_FLAG_GET_CUR | UVC_CTRL_FLAG_GET_MIN | \ - UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | \ - UVC_CTRL_FLAG_GET_DEF) - -struct uvc_xu_control_info { - __u8 entity[16]; - __u8 index; - __u8 selector; - __u16 size; - __u32 flags; -}; - -struct uvc_menu_info { - __u32 value; - __u8 name[32]; -}; - -struct uvc_xu_control_mapping_old { - __u8 reserved[64]; -}; - -struct uvc_xu_control_mapping { - __u32 id; - __u8 name[32]; - __u8 entity[16]; - __u8 selector; - - __u8 size; - __u8 offset; - enum v4l2_ctrl_type v4l2_type; - __u32 data_type; - - struct uvc_menu_info __user *menu_info; - __u32 menu_count; - - __u32 reserved[4]; -}; - -struct uvc_xu_control { - __u8 unit; - __u8 selector; - __u16 size; - __u8 __user *data; -}; - -struct uvc_xu_control_query { - __u8 unit; - __u8 selector; - __u8 query; - __u16 size; - __u8 __user *data; -}; - -#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info) -#define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old) -#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping) -#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control) -#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control) -#define UVCIOC_CTRL_QUERY _IOWR('U', 5, struct uvc_xu_control_query) - -#ifdef __KERNEL__ - -#include -#include - -/* -------------------------------------------------------------------------- - * UVC constants - */ - -#define UVC_TERM_INPUT 0x0000 -#define UVC_TERM_OUTPUT 0x8000 -#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000) - -#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff) -#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) \ - (UVC_ENTITY_IS_TERM(entity) && \ - ((entity)->type & 0x8000) == UVC_TERM_INPUT) -#define UVC_ENTITY_IS_OTERM(entity) \ - (UVC_ENTITY_IS_TERM(entity) && \ - ((entity)->type & 0x8000) == UVC_TERM_OUTPUT) - - -/* ------------------------------------------------------------------------ - * 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_MEDIA_TRANSPORT_INPUT \ - {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03} -#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_FORMAT_MJPEG \ - { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_YUY2 \ - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_YUY2_ISIGHT \ - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_NV12 \ - { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_YV12 \ - { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_I420 \ - { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_UYVY \ - { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_Y800 \ - { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_Y16 \ - { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} -#define UVC_GUID_FORMAT_BY8 \ - { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \ - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} - -/* ------------------------------------------------------------------------ - * Driver specific constants. - */ - -#define DRIVER_VERSION_NUMBER KERNEL_VERSION(1, 0, 0) -#define DRIVER_VERSION "v1.0.0" - -/* Number of isochronous URBs. */ -#define UVC_URBS 5 -/* Maximum number of packets per URB. */ -#define UVC_MAX_PACKETS 32 -/* Maximum number of video buffers. */ -#define UVC_MAX_VIDEO_BUFFERS 32 -/* Maximum status buffer size in bytes of interrupt URB. */ -#define UVC_MAX_STATUS_SIZE 16 - -#define UVC_CTRL_CONTROL_TIMEOUT 300 -#define UVC_CTRL_STREAMING_TIMEOUT 5000 - -/* Maximum allowed number of control mappings per device */ -#define UVC_MAX_CONTROL_MAPPINGS 1024 - -/* Devices quirks */ -#define UVC_QUIRK_STATUS_INTERVAL 0x00000001 -#define UVC_QUIRK_PROBE_MINMAX 0x00000002 -#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004 -#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008 -#define UVC_QUIRK_STREAM_NO_FID 0x00000010 -#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020 -#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080 -#define UVC_QUIRK_PROBE_DEF 0x00000100 -#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200 - -/* Format flags */ -#define UVC_FMT_FLAG_COMPRESSED 0x00000001 -#define UVC_FMT_FLAG_STREAM 0x00000002 - -/* ------------------------------------------------------------------------ - * Structures. - */ - -struct uvc_device; - -/* TODO: Put the most frequently accessed fields at the beginning of - * structures to maximize cache efficiency. - */ -struct uvc_control_info { - struct list_head mappings; - - __u8 entity[16]; - __u8 index; /* Bit index in bmControls */ - __u8 selector; - - __u16 size; - __u32 flags; -}; - -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; - __u32 data_type; - - struct uvc_menu_info *menu_info; - __u32 menu_count; - - __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query, - const __u8 *data); - void (*set) (struct uvc_control_mapping *mapping, __s32 value, - __u8 *data); -}; - -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, - modified:1, - cached:1, - initialized:1; - - __u8 *uvc_data; -}; - -struct uvc_format_desc { - char *name; - __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 sure terminal types have a non-null MSB. - * - * For terminals, the type's most significant bit stores the terminal - * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should - * always be accessed with the UVC_ENTITY_* macros and never directly. - */ - -struct uvc_entity { - struct list_head list; /* Entity as part of a UVC device. */ - struct list_head chain; /* Entity as part of a video device - * chain. */ - __u8 id; - __u16 type; - char name[64]; - - union { - struct { - __u16 wObjectiveFocalLengthMin; - __u16 wObjectiveFocalLengthMax; - __u16 wOcularFocalLength; - __u8 bControlSize; - __u8 *bmControls; - } camera; - - struct { - __u8 bControlSize; - __u8 *bmControls; - __u8 bTransportModeSize; - __u8 *bmTransportModes; - } media; - - struct { - } output; - - struct { - __u16 wMaxMultiplier; - __u8 bControlSize; - __u8 *bmControls; - __u8 bmVideoStandards; - } processing; - - struct { - } selector; - - struct { - __u8 guidExtensionCode[16]; - __u8 bNumControls; - __u8 bControlSize; - __u8 *bmControls; - __u8 *bmControlsType; - } extension; - }; - - __u8 bNrInPins; - __u8 *baSourceID; - - 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_streaming_header { - __u8 bNumFormats; - __u8 bEndpointAddress; - __u8 bTerminalLink; - __u8 bControlSize; - __u8 *bmaControls; - /* The following fields are used by input headers only. */ - __u8 bmInfo; - __u8 bStillCaptureMethod; - __u8 bTriggerSupport; - __u8 bTriggerUsage; -}; - -enum uvc_buffer_state { - UVC_BUF_STATE_IDLE = 0, - UVC_BUF_STATE_QUEUED = 1, - UVC_BUF_STATE_ACTIVE = 2, - UVC_BUF_STATE_READY = 3, - UVC_BUF_STATE_DONE = 4, - UVC_BUF_STATE_ERROR = 5, -}; - -struct uvc_buffer { - 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; - unsigned int error; -}; - -#define UVC_QUEUE_STREAMING (1 << 0) -#define UVC_QUEUE_DISCONNECTED (1 << 1) -#define UVC_QUEUE_DROP_CORRUPTED (1 << 2) - -struct uvc_video_queue { - enum v4l2_buf_type type; - - void *mem; - unsigned int flags; - - unsigned int count; - unsigned int buf_size; - unsigned int buf_used; - struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS]; - struct mutex mutex; /* protects buffers and mainqueue */ - spinlock_t irqlock; /* protects irqqueue */ - - struct list_head mainqueue; - struct list_head irqqueue; -}; - -struct uvc_video_chain { - struct uvc_device *dev; - struct list_head list; - - struct list_head entities; /* All entities */ - struct uvc_entity *processing; /* Processing unit */ - struct uvc_entity *selector; /* Selector unit */ - - struct mutex ctrl_mutex; /* Protects ctrl.info */ -}; - -struct uvc_streaming { - struct list_head list; - struct uvc_device *dev; - struct video_device *vdev; - struct uvc_video_chain *chain; - atomic_t active; - - struct usb_interface *intf; - int intfnum; - __u16 maxpsize; - - struct uvc_streaming_header header; - enum v4l2_buf_type type; - - unsigned int nformats; - struct uvc_format *format; - - struct uvc_streaming_control ctrl; - struct uvc_format *cur_format; - struct uvc_frame *cur_frame; - /* Protect access to ctrl, cur_format, cur_frame and hardware video - * probe control. - */ - struct mutex mutex; - - unsigned int frozen : 1; - struct uvc_video_queue queue; - void (*decode) (struct urb *urb, struct uvc_streaming *video, - struct uvc_buffer *buf); - - /* Context data used by the bulk completion handler. */ - struct { - __u8 header[256]; - unsigned int header_size; - int skip_payload; - __u32 payload_size; - __u32 max_payload_size; - } bulk; - - struct urb *urb[UVC_URBS]; - char *urb_buffer[UVC_URBS]; - dma_addr_t urb_dma[UVC_URBS]; - unsigned int urb_size; - - __u32 sequence; - __u8 last_fid; -}; - -enum uvc_device_state { - UVC_DEV_DISCONNECTED = 1, -}; - -struct uvc_device { - struct usb_device *udev; - struct usb_interface *intf; - unsigned long warnings; - __u32 quirks; - int intfnum; - char name[32]; - - enum uvc_device_state state; - atomic_t users; - atomic_t nmappings; - - /* Video control interface */ - __u16 uvc_version; - __u32 clock_frequency; - - struct list_head entities; - struct list_head chains; - - /* Video Streaming interfaces */ - struct list_head streams; - atomic_t nstreams; - - /* Status Interrupt Endpoint */ - struct usb_host_endpoint *int_ep; - struct urb *int_urb; - __u8 *status; - struct input_dev *input; - char input_phys[64]; -}; - -enum uvc_handle_state { - UVC_HANDLE_PASSIVE = 0, - UVC_HANDLE_ACTIVE = 1, -}; - -struct uvc_fh { - struct uvc_video_chain *chain; - struct uvc_streaming *stream; - enum uvc_handle_state state; -}; - -struct uvc_driver { - struct usb_driver driver; -}; - -/* ------------------------------------------------------------------------ - * 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) -#define UVC_TRACE_SUSPEND (1 << 8) -#define UVC_TRACE_STATUS (1 << 9) -#define UVC_TRACE_VIDEO (1 << 10) - -#define UVC_WARN_MINMAX 0 -#define UVC_WARN_PROBE_DEF 1 - -extern unsigned int uvc_clock_param; -extern unsigned int uvc_no_drop_param; -extern unsigned int uvc_trace_param; -extern unsigned int uvc_timeout_param; - -#define uvc_trace(flag, msg...) \ - do { \ - if (uvc_trace_param & flag) \ - printk(KERN_DEBUG "uvcvideo: " msg); \ - } while (0) - -#define uvc_warn_once(dev, warn, msg...) \ - do { \ - if (!test_and_set_bit(warn, &dev->warnings)) \ - printk(KERN_INFO "uvcvideo: " msg); \ - } while (0) - -#define uvc_printk(level, msg...) \ - printk(level "uvcvideo: " msg) - -/* -------------------------------------------------------------------------- - * Internal functions. - */ - -/* Core driver */ -extern struct uvc_driver uvc_driver; - -/* Video buffers queue management. */ -extern void uvc_queue_init(struct uvc_video_queue *queue, - enum v4l2_buf_type type, int drop_corrupted); -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 int uvc_query_buffer(struct uvc_video_queue *queue, - 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, int disconnect); -extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, - struct uvc_buffer *buf); -extern int uvc_queue_mmap(struct uvc_video_queue *queue, - struct vm_area_struct *vma); -extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue, - struct file *file, poll_table *wait); -extern int uvc_queue_allocated(struct uvc_video_queue *queue); -static inline int uvc_queue_streaming(struct uvc_video_queue *queue) -{ - return queue->flags & UVC_QUEUE_STREAMING; -} - -/* V4L2 interface */ -extern const struct v4l2_file_operations uvc_fops; - -/* Video */ -extern int uvc_video_init(struct uvc_streaming *stream); -extern int uvc_video_suspend(struct uvc_streaming *stream); -extern int uvc_video_resume(struct uvc_streaming *stream); -extern int uvc_video_enable(struct uvc_streaming *stream, int enable); -extern int uvc_probe_video(struct uvc_streaming *stream, - struct uvc_streaming_control *probe); -extern int uvc_commit_video(struct uvc_streaming *stream, - struct uvc_streaming_control *ctrl); -extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, - __u8 intfnum, __u8 cs, void *data, __u16 size); - -/* Status */ -extern int uvc_status_init(struct uvc_device *dev); -extern void uvc_status_cleanup(struct uvc_device *dev); -extern int uvc_status_start(struct uvc_device *dev); -extern void uvc_status_stop(struct uvc_device *dev); -extern int uvc_status_suspend(struct uvc_device *dev); -extern int uvc_status_resume(struct uvc_device *dev); - -/* Controls */ -extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, - struct v4l2_queryctrl *v4l2_ctrl); -extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain, - struct v4l2_querymenu *query_menu); - -extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain, - const struct uvc_control_mapping *mapping); -extern int uvc_ctrl_init_device(struct uvc_device *dev); -extern void uvc_ctrl_cleanup_device(struct uvc_device *dev); -extern int uvc_ctrl_resume_device(struct uvc_device *dev); - -extern int uvc_ctrl_begin(struct uvc_video_chain *chain); -extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback); -static inline int uvc_ctrl_commit(struct uvc_video_chain *chain) -{ - return __uvc_ctrl_commit(chain, 0); -} -static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain) -{ - return __uvc_ctrl_commit(chain, 1); -} - -extern int uvc_ctrl_get(struct uvc_video_chain *chain, - struct v4l2_ext_control *xctrl); -extern int uvc_ctrl_set(struct uvc_video_chain *chain, - struct v4l2_ext_control *xctrl); - -extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain, - struct uvc_xu_control_query *xqry); - -/* 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); - -/* Quirks support */ -void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf); - -#endif /* __KERNEL__ */ - -#endif - diff --git a/include/linux/Kbuild b/include/linux/Kbuild index a354c19..720e793 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -365,6 +365,7 @@ header-y += unistd.h header-y += usbdevice_fs.h header-y += utime.h header-y += utsname.h +header-y += uvcvideo.h header-y += veth.h header-y += vhost.h header-y += videodev2.h diff --git a/include/linux/uvcvideo.h b/include/linux/uvcvideo.h new file mode 100644 index 0000000..286da54 --- /dev/null +++ b/include/linux/uvcvideo.h @@ -0,0 +1,667 @@ +#ifndef _USB_VIDEO_H_ +#define _USB_VIDEO_H_ + +#include +#include + +/* + * Dynamic controls + */ + +/* Data types for UVC control data */ +#define UVC_CTRL_DATA_TYPE_RAW 0 +#define UVC_CTRL_DATA_TYPE_SIGNED 1 +#define UVC_CTRL_DATA_TYPE_UNSIGNED 2 +#define UVC_CTRL_DATA_TYPE_BOOLEAN 3 +#define UVC_CTRL_DATA_TYPE_ENUM 4 +#define UVC_CTRL_DATA_TYPE_BITMASK 5 + +/* Control flags */ +#define UVC_CTRL_FLAG_SET_CUR (1 << 0) +#define UVC_CTRL_FLAG_GET_CUR (1 << 1) +#define UVC_CTRL_FLAG_GET_MIN (1 << 2) +#define UVC_CTRL_FLAG_GET_MAX (1 << 3) +#define UVC_CTRL_FLAG_GET_RES (1 << 4) +#define UVC_CTRL_FLAG_GET_DEF (1 << 5) +/* Control should be saved at suspend and restored at resume. */ +#define UVC_CTRL_FLAG_RESTORE (1 << 6) +/* Control can be updated by the camera. */ +#define UVC_CTRL_FLAG_AUTO_UPDATE (1 << 7) + +#define UVC_CTRL_FLAG_GET_RANGE \ + (UVC_CTRL_FLAG_GET_CUR | UVC_CTRL_FLAG_GET_MIN | \ + UVC_CTRL_FLAG_GET_MAX | UVC_CTRL_FLAG_GET_RES | \ + UVC_CTRL_FLAG_GET_DEF) + +struct uvc_xu_control_info { + __u8 entity[16]; + __u8 index; + __u8 selector; + __u16 size; + __u32 flags; +}; + +struct uvc_menu_info { + __u32 value; + __u8 name[32]; +}; + +struct uvc_xu_control_mapping_old { + __u8 reserved[64]; +}; + +struct uvc_xu_control_mapping { + __u32 id; + __u8 name[32]; + __u8 entity[16]; + __u8 selector; + + __u8 size; + __u8 offset; + enum v4l2_ctrl_type v4l2_type; + __u32 data_type; + + struct uvc_menu_info __user *menu_info; + __u32 menu_count; + + __u32 reserved[4]; +}; + +struct uvc_xu_control { + __u8 unit; + __u8 selector; + __u16 size; + __u8 __user *data; +}; + +struct uvc_xu_control_query { + __u8 unit; + __u8 selector; + __u8 query; + __u16 size; + __u8 __user *data; +}; + +#define UVCIOC_CTRL_ADD _IOW('U', 1, struct uvc_xu_control_info) +#define UVCIOC_CTRL_MAP_OLD _IOWR('U', 2, struct uvc_xu_control_mapping_old) +#define UVCIOC_CTRL_MAP _IOWR('U', 2, struct uvc_xu_control_mapping) +#define UVCIOC_CTRL_GET _IOWR('U', 3, struct uvc_xu_control) +#define UVCIOC_CTRL_SET _IOW('U', 4, struct uvc_xu_control) +#define UVCIOC_CTRL_QUERY _IOWR('U', 5, struct uvc_xu_control_query) + +#ifdef __KERNEL__ + +#include +#include + +/* -------------------------------------------------------------------------- + * UVC constants + */ + +#define UVC_TERM_INPUT 0x0000 +#define UVC_TERM_OUTPUT 0x8000 +#define UVC_TERM_DIRECTION(term) ((term)->type & 0x8000) + +#define UVC_ENTITY_TYPE(entity) ((entity)->type & 0x7fff) +#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) \ + (UVC_ENTITY_IS_TERM(entity) && \ + ((entity)->type & 0x8000) == UVC_TERM_INPUT) +#define UVC_ENTITY_IS_OTERM(entity) \ + (UVC_ENTITY_IS_TERM(entity) && \ + ((entity)->type & 0x8000) == UVC_TERM_OUTPUT) + + +/* ------------------------------------------------------------------------ + * 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_MEDIA_TRANSPORT_INPUT \ + {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03} +#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_FORMAT_MJPEG \ + { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_YUY2 \ + { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_YUY2_ISIGHT \ + { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0x00, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_NV12 \ + { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_YV12 \ + { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_I420 \ + { 'I', '4', '2', '0', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_UYVY \ + { 'U', 'Y', 'V', 'Y', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_Y800 \ + { 'Y', '8', '0', '0', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_Y16 \ + { 'Y', '1', '6', ' ', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} +#define UVC_GUID_FORMAT_BY8 \ + { 'B', 'Y', '8', ' ', 0x00, 0x00, 0x10, 0x00, \ + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71} + +/* ------------------------------------------------------------------------ + * Driver specific constants. + */ + +#define DRIVER_VERSION_NUMBER KERNEL_VERSION(1, 0, 0) +#define DRIVER_VERSION "v1.0.0" + +/* Number of isochronous URBs. */ +#define UVC_URBS 5 +/* Maximum number of packets per URB. */ +#define UVC_MAX_PACKETS 32 +/* Maximum number of video buffers. */ +#define UVC_MAX_VIDEO_BUFFERS 32 +/* Maximum status buffer size in bytes of interrupt URB. */ +#define UVC_MAX_STATUS_SIZE 16 + +#define UVC_CTRL_CONTROL_TIMEOUT 300 +#define UVC_CTRL_STREAMING_TIMEOUT 5000 + +/* Maximum allowed number of control mappings per device */ +#define UVC_MAX_CONTROL_MAPPINGS 1024 + +/* Devices quirks */ +#define UVC_QUIRK_STATUS_INTERVAL 0x00000001 +#define UVC_QUIRK_PROBE_MINMAX 0x00000002 +#define UVC_QUIRK_PROBE_EXTRAFIELDS 0x00000004 +#define UVC_QUIRK_BUILTIN_ISIGHT 0x00000008 +#define UVC_QUIRK_STREAM_NO_FID 0x00000010 +#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020 +#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080 +#define UVC_QUIRK_PROBE_DEF 0x00000100 +#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200 + +/* Format flags */ +#define UVC_FMT_FLAG_COMPRESSED 0x00000001 +#define UVC_FMT_FLAG_STREAM 0x00000002 + +/* ------------------------------------------------------------------------ + * Structures. + */ + +struct uvc_device; + +/* TODO: Put the most frequently accessed fields at the beginning of + * structures to maximize cache efficiency. + */ +struct uvc_control_info { + struct list_head mappings; + + __u8 entity[16]; + __u8 index; /* Bit index in bmControls */ + __u8 selector; + + __u16 size; + __u32 flags; +}; + +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; + __u32 data_type; + + struct uvc_menu_info *menu_info; + __u32 menu_count; + + __s32 (*get) (struct uvc_control_mapping *mapping, __u8 query, + const __u8 *data); + void (*set) (struct uvc_control_mapping *mapping, __s32 value, + __u8 *data); +}; + +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, + modified:1, + cached:1, + initialized:1; + + __u8 *uvc_data; +}; + +struct uvc_format_desc { + char *name; + __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 sure terminal types have a non-null MSB. + * + * For terminals, the type's most significant bit stores the terminal + * direction (either UVC_TERM_INPUT or UVC_TERM_OUTPUT). The type field should + * always be accessed with the UVC_ENTITY_* macros and never directly. + */ + +struct uvc_entity { + struct list_head list; /* Entity as part of a UVC device. */ + struct list_head chain; /* Entity as part of a video device + * chain. */ + __u8 id; + __u16 type; + char name[64]; + + union { + struct { + __u16 wObjectiveFocalLengthMin; + __u16 wObjectiveFocalLengthMax; + __u16 wOcularFocalLength; + __u8 bControlSize; + __u8 *bmControls; + } camera; + + struct { + __u8 bControlSize; + __u8 *bmControls; + __u8 bTransportModeSize; + __u8 *bmTransportModes; + } media; + + struct { + } output; + + struct { + __u16 wMaxMultiplier; + __u8 bControlSize; + __u8 *bmControls; + __u8 bmVideoStandards; + } processing; + + struct { + } selector; + + struct { + __u8 guidExtensionCode[16]; + __u8 bNumControls; + __u8 bControlSize; + __u8 *bmControls; + __u8 *bmControlsType; + } extension; + }; + + __u8 bNrInPins; + __u8 *baSourceID; + + 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_streaming_header { + __u8 bNumFormats; + __u8 bEndpointAddress; + __u8 bTerminalLink; + __u8 bControlSize; + __u8 *bmaControls; + /* The following fields are used by input headers only. */ + __u8 bmInfo; + __u8 bStillCaptureMethod; + __u8 bTriggerSupport; + __u8 bTriggerUsage; +}; + +enum uvc_buffer_state { + UVC_BUF_STATE_IDLE = 0, + UVC_BUF_STATE_QUEUED = 1, + UVC_BUF_STATE_ACTIVE = 2, + UVC_BUF_STATE_READY = 3, + UVC_BUF_STATE_DONE = 4, + UVC_BUF_STATE_ERROR = 5, +}; + +struct uvc_buffer { + 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; + unsigned int error; +}; + +#define UVC_QUEUE_STREAMING (1 << 0) +#define UVC_QUEUE_DISCONNECTED (1 << 1) +#define UVC_QUEUE_DROP_CORRUPTED (1 << 2) + +struct uvc_video_queue { + enum v4l2_buf_type type; + + void *mem; + unsigned int flags; + + unsigned int count; + unsigned int buf_size; + unsigned int buf_used; + struct uvc_buffer buffer[UVC_MAX_VIDEO_BUFFERS]; + struct mutex mutex; /* protects buffers and mainqueue */ + spinlock_t irqlock; /* protects irqqueue */ + + struct list_head mainqueue; + struct list_head irqqueue; +}; + +struct uvc_video_chain { + struct uvc_device *dev; + struct list_head list; + + struct list_head entities; /* All entities */ + struct uvc_entity *processing; /* Processing unit */ + struct uvc_entity *selector; /* Selector unit */ + + struct mutex ctrl_mutex; /* Protects ctrl.info */ +}; + +struct uvc_streaming { + struct list_head list; + struct uvc_device *dev; + struct video_device *vdev; + struct uvc_video_chain *chain; + atomic_t active; + + struct usb_interface *intf; + int intfnum; + __u16 maxpsize; + + struct uvc_streaming_header header; + enum v4l2_buf_type type; + + unsigned int nformats; + struct uvc_format *format; + + struct uvc_streaming_control ctrl; + struct uvc_format *cur_format; + struct uvc_frame *cur_frame; + /* Protect access to ctrl, cur_format, cur_frame and hardware video + * probe control. + */ + struct mutex mutex; + + unsigned int frozen:1; + struct uvc_video_queue queue; + void (*decode) (struct urb *urb, struct uvc_streaming *video, + struct uvc_buffer *buf); + + /* Context data used by the bulk completion handler. */ + struct { + __u8 header[256]; + unsigned int header_size; + int skip_payload; + __u32 payload_size; + __u32 max_payload_size; + } bulk; + + struct urb *urb[UVC_URBS]; + char *urb_buffer[UVC_URBS]; + dma_addr_t urb_dma[UVC_URBS]; + unsigned int urb_size; + + __u32 sequence; + __u8 last_fid; +}; + +enum uvc_device_state { + UVC_DEV_DISCONNECTED = 1, +}; + +struct uvc_device { + struct usb_device *udev; + struct usb_interface *intf; + unsigned long warnings; + __u32 quirks; + int intfnum; + char name[32]; + + enum uvc_device_state state; + atomic_t users; + atomic_t nmappings; + + /* Video control interface */ + __u16 uvc_version; + __u32 clock_frequency; + + struct list_head entities; + struct list_head chains; + + /* Video Streaming interfaces */ + struct list_head streams; + atomic_t nstreams; + + /* Status Interrupt Endpoint */ + struct usb_host_endpoint *int_ep; + struct urb *int_urb; + __u8 *status; + struct input_dev *input; + char input_phys[64]; +}; + +enum uvc_handle_state { + UVC_HANDLE_PASSIVE = 0, + UVC_HANDLE_ACTIVE = 1, +}; + +struct uvc_fh { + struct uvc_video_chain *chain; + struct uvc_streaming *stream; + enum uvc_handle_state state; +}; + +struct uvc_driver { + struct usb_driver driver; +}; + +/* ------------------------------------------------------------------------ + * 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) +#define UVC_TRACE_SUSPEND (1 << 8) +#define UVC_TRACE_STATUS (1 << 9) +#define UVC_TRACE_VIDEO (1 << 10) + +#define UVC_WARN_MINMAX 0 +#define UVC_WARN_PROBE_DEF 1 + +extern unsigned int uvc_clock_param; +extern unsigned int uvc_no_drop_param; +extern unsigned int uvc_trace_param; +extern unsigned int uvc_timeout_param; + +#define uvc_trace(flag, msg...) \ + do { \ + if (uvc_trace_param & flag) \ + printk(KERN_DEBUG "uvcvideo: " msg); \ + } while (0) + +#define uvc_warn_once(dev, warn, msg...) \ + do { \ + if (!test_and_set_bit(warn, &dev->warnings)) \ + printk(KERN_INFO "uvcvideo: " msg); \ + } while (0) + +#define uvc_printk(level, msg...) \ + printk(level "uvcvideo: " msg) + +/* -------------------------------------------------------------------------- + * Internal functions. + */ + +/* Core driver */ +extern struct uvc_driver uvc_driver; + +/* Video buffers queue management. */ +extern void uvc_queue_init(struct uvc_video_queue *queue, + enum v4l2_buf_type type, int drop_corrupted); +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 int uvc_query_buffer(struct uvc_video_queue *queue, + 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, int disconnect); +extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, + struct uvc_buffer *buf); +extern int uvc_queue_mmap(struct uvc_video_queue *queue, + struct vm_area_struct *vma); +extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue, + struct file *file, poll_table *wait); +extern int uvc_queue_allocated(struct uvc_video_queue *queue); +static inline int uvc_queue_streaming(struct uvc_video_queue *queue) +{ + return queue->flags & UVC_QUEUE_STREAMING; +} + +/* V4L2 interface */ +extern const struct v4l2_file_operations uvc_fops; + +/* Video */ +extern int uvc_video_init(struct uvc_streaming *stream); +extern int uvc_video_suspend(struct uvc_streaming *stream); +extern int uvc_video_resume(struct uvc_streaming *stream); +extern int uvc_video_enable(struct uvc_streaming *stream, int enable); +extern int uvc_probe_video(struct uvc_streaming *stream, + struct uvc_streaming_control *probe); +extern int uvc_commit_video(struct uvc_streaming *stream, + struct uvc_streaming_control *ctrl); +extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, + __u8 intfnum, __u8 cs, void *data, __u16 size); + +/* Status */ +extern int uvc_status_init(struct uvc_device *dev); +extern void uvc_status_cleanup(struct uvc_device *dev); +extern int uvc_status_start(struct uvc_device *dev); +extern void uvc_status_stop(struct uvc_device *dev); +extern int uvc_status_suspend(struct uvc_device *dev); +extern int uvc_status_resume(struct uvc_device *dev); + +/* Controls */ +extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, + struct v4l2_queryctrl *v4l2_ctrl); +extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain, + struct v4l2_querymenu *query_menu); + +extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain, + const struct uvc_control_mapping *mapping); +extern int uvc_ctrl_init_device(struct uvc_device *dev); +extern void uvc_ctrl_cleanup_device(struct uvc_device *dev); +extern int uvc_ctrl_resume_device(struct uvc_device *dev); + +extern int uvc_ctrl_begin(struct uvc_video_chain *chain); +extern int __uvc_ctrl_commit(struct uvc_video_chain *chain, int rollback); +static inline int uvc_ctrl_commit(struct uvc_video_chain *chain) +{ + return __uvc_ctrl_commit(chain, 0); +} +static inline int uvc_ctrl_rollback(struct uvc_video_chain *chain) +{ + return __uvc_ctrl_commit(chain, 1); +} + +extern int uvc_ctrl_get(struct uvc_video_chain *chain, + struct v4l2_ext_control *xctrl); +extern int uvc_ctrl_set(struct uvc_video_chain *chain, + struct v4l2_ext_control *xctrl); + +extern int uvc_xu_ctrl_query(struct uvc_video_chain *chain, + struct uvc_xu_control_query *xqry); + +/* 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); + +/* Quirks support */ +void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream, + struct uvc_buffer *buf); + +#endif /* __KERNEL__ */ + +#endif -- 1.7.2.2