diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/uvc/Makefile | 2 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_driver.c | 15 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_isight.c | 2 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_metadata.c | 179 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_queue.c | 44 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_video.c | 134 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvcvideo.h | 16 |
7 files changed, 370 insertions, 22 deletions
diff --git a/drivers/media/usb/uvc/Makefile b/drivers/media/usb/uvc/Makefile index a4fe5b5d533f..4f9eee4f81ab 100644 --- a/drivers/media/usb/uvc/Makefile +++ b/drivers/media/usb/uvc/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 uvcvideo-objs := uvc_driver.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_ctrl.o \ - uvc_status.o uvc_isight.o uvc_debugfs.o + uvc_status.o uvc_isight.o uvc_debugfs.o uvc_metadata.o ifeq ($(CONFIG_MEDIA_CONTROLLER),y) uvcvideo-objs += uvc_entity.o endif diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 1509bbc77a2f..2886c100abf2 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1883,6 +1883,7 @@ static void uvc_unregister_video(struct uvc_device *dev) continue; video_unregister_device(&stream->vdev); + video_unregister_device(&stream->meta.vdev); uvc_debugfs_cleanup_stream(stream); } @@ -1930,6 +1931,9 @@ int uvc_register_video_device(struct uvc_device *dev, case V4L2_BUF_TYPE_VIDEO_OUTPUT: vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; break; + case V4L2_BUF_TYPE_META_CAPTURE: + vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; + break; } strlcpy(vdev->name, dev->name, sizeof vdev->name); @@ -1965,7 +1969,8 @@ static int uvc_register_video(struct uvc_device *dev, } if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE; + stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE + | V4L2_CAP_META_CAPTURE; else stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; @@ -2003,6 +2008,11 @@ static int uvc_register_terms(struct uvc_device *dev, if (ret < 0) return ret; + /* Register a metadata node, but ignore a possible failure, + * complete registration of video nodes anyway. + */ + uvc_meta_register(stream); + term->vdev = &stream->vdev; } @@ -2037,6 +2047,7 @@ static int uvc_register_chains(struct uvc_device *dev) struct uvc_device_info { u32 quirks; + u32 meta_format; }; static int uvc_probe(struct usb_interface *intf, @@ -2074,6 +2085,8 @@ static int uvc_probe(struct usb_interface *intf, dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; dev->quirks = (uvc_quirks_param == -1) ? quirks : uvc_quirks_param; + if (info) + dev->meta_format = info->meta_format; if (udev->product != NULL) strlcpy(dev->name, udev->product, sizeof dev->name); diff --git a/drivers/media/usb/uvc/uvc_isight.c b/drivers/media/usb/uvc/uvc_isight.c index 8510e7259e76..fb940cfae575 100644 --- a/drivers/media/usb/uvc/uvc_isight.c +++ b/drivers/media/usb/uvc/uvc_isight.c @@ -100,7 +100,7 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf, } void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf) + struct uvc_buffer *buf, struct uvc_buffer *meta_buf) { int ret, i; diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c new file mode 100644 index 000000000000..cd1aec19cc5b --- /dev/null +++ b/drivers/media/usb/uvc/uvc_metadata.c @@ -0,0 +1,179 @@ +/* + * uvc_metadata.c -- USB Video Class driver - Metadata handling + * + * Copyright (C) 2016 + * Guennadi Liakhovetski (guennadi.liakhovetski@intel.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/videodev2.h> + +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-v4l2.h> +#include <media/videobuf2-vmalloc.h> + +#include "uvcvideo.h" + +/* ----------------------------------------------------------------------------- + * V4L2 ioctls + */ + +static int uvc_meta_v4l2_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct v4l2_fh *vfh = file->private_data; + struct uvc_streaming *stream = video_get_drvdata(vfh->vdev); + struct uvc_video_chain *chain = stream->chain; + + strlcpy(cap->driver, "uvcvideo", sizeof(cap->driver)); + strlcpy(cap->card, vfh->vdev->name, sizeof(cap->card)); + usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info)); + cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING + | chain->caps; + + return 0; +} + +static int uvc_meta_v4l2_get_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct v4l2_fh *vfh = file->private_data; + struct uvc_streaming *stream = video_get_drvdata(vfh->vdev); + struct v4l2_meta_format *fmt = &format->fmt.meta; + + if (format->type != vfh->vdev->queue->type) + return -EINVAL; + + memset(fmt, 0, sizeof(*fmt)); + + fmt->dataformat = stream->meta.format; + fmt->buffersize = UVC_METATADA_BUF_SIZE; + + return 0; +} + +static int uvc_meta_v4l2_try_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct v4l2_fh *vfh = file->private_data; + struct uvc_streaming *stream = video_get_drvdata(vfh->vdev); + struct uvc_device *dev = stream->dev; + struct v4l2_meta_format *fmt = &format->fmt.meta; + u32 fmeta = fmt->dataformat; + + if (format->type != vfh->vdev->queue->type) + return -EINVAL; + + memset(fmt, 0, sizeof(*fmt)); + + fmt->dataformat = fmeta == dev->meta_format ? fmeta : V4L2_META_FMT_UVC; + fmt->buffersize = UVC_METATADA_BUF_SIZE; + + return 0; +} + +static int uvc_meta_v4l2_set_format(struct file *file, void *fh, + struct v4l2_format *format) +{ + struct v4l2_fh *vfh = file->private_data; + struct uvc_streaming *stream = video_get_drvdata(vfh->vdev); + struct v4l2_meta_format *fmt = &format->fmt.meta; + int ret; + + ret = uvc_meta_v4l2_try_format(file, fh, format); + if (ret < 0) + return ret; + + /* + * We could in principle switch at any time, also during streaming. + * Metadata buffers would still be perfectly parseable, but it's more + * consistent and cleaner to disallow that. + */ + mutex_lock(&stream->mutex); + + if (uvc_queue_allocated(&stream->queue)) + ret = -EBUSY; + else + stream->meta.format = fmt->dataformat; + + mutex_unlock(&stream->mutex); + + return ret; +} + +static int uvc_meta_v4l2_enum_formats(struct file *file, void *fh, + struct v4l2_fmtdesc *fdesc) +{ + struct v4l2_fh *vfh = file->private_data; + struct uvc_streaming *stream = video_get_drvdata(vfh->vdev); + struct uvc_device *dev = stream->dev; + u32 index = fdesc->index; + + if (fdesc->type != vfh->vdev->queue->type || + index > 1U || (index && !dev->meta_format)) + return -EINVAL; + + memset(fdesc, 0, sizeof(*fdesc)); + + fdesc->type = vfh->vdev->queue->type; + fdesc->index = index; + fdesc->pixelformat = index ? dev->meta_format : V4L2_META_FMT_UVC; + + return 0; +} + +static const struct v4l2_ioctl_ops uvc_meta_ioctl_ops = { + .vidioc_querycap = uvc_meta_v4l2_querycap, + .vidioc_g_fmt_meta_cap = uvc_meta_v4l2_get_format, + .vidioc_s_fmt_meta_cap = uvc_meta_v4l2_set_format, + .vidioc_try_fmt_meta_cap = uvc_meta_v4l2_try_format, + .vidioc_enum_fmt_meta_cap = uvc_meta_v4l2_enum_formats, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 File Operations + */ + +static const struct v4l2_file_operations uvc_meta_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = video_ioctl2, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, +}; + +int uvc_meta_register(struct uvc_streaming *stream) +{ + struct uvc_device *dev = stream->dev; + struct video_device *vdev = &stream->meta.vdev; + struct uvc_video_queue *queue = &stream->meta.queue; + + stream->meta.format = V4L2_META_FMT_UVC; + + /* + * The video interface queue uses manual locking and thus does not set + * the queue pointer. Set it manually here. + */ + vdev->queue = &queue->queue; + + return uvc_register_video_device(dev, stream, vdev, queue, + V4L2_BUF_TYPE_META_CAPTURE, + &uvc_meta_fops, &uvc_meta_ioctl_ops); +} diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c index c8d78b2f3de4..cd2ea5a23086 100644 --- a/drivers/media/usb/uvc/uvc_queue.c +++ b/drivers/media/usb/uvc/uvc_queue.c @@ -79,8 +79,19 @@ static int uvc_queue_setup(struct vb2_queue *vq, unsigned int sizes[], struct device *alloc_devs[]) { struct uvc_video_queue *queue = vb2_get_drv_priv(vq); - struct uvc_streaming *stream = uvc_queue_to_stream(queue); - unsigned size = stream->ctrl.dwMaxVideoFrameSize; + struct uvc_streaming *stream; + unsigned int size; + + switch (vq->type) { + case V4L2_BUF_TYPE_META_CAPTURE: + size = UVC_METATADA_BUF_SIZE; + break; + + default: + stream = uvc_queue_to_stream(queue); + size = stream->ctrl.dwMaxVideoFrameSize; + break; + } /* * When called with plane sizes, validate them. The driver supports @@ -114,7 +125,7 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb) buf->error = 0; buf->mem = vb2_plane_vaddr(vb, 0); buf->length = vb2_plane_size(vb, 0); - if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + if (vb->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) buf->bytesused = 0; else buf->bytesused = vb2_get_plane_payload(vb, 0); @@ -177,10 +188,10 @@ static int uvc_start_streaming(struct vb2_queue *vq, unsigned int count) static void uvc_stop_streaming(struct vb2_queue *vq) { struct uvc_video_queue *queue = vb2_get_drv_priv(vq); - struct uvc_streaming *stream = uvc_queue_to_stream(queue); unsigned long flags; - uvc_video_enable(stream, 0); + if (vq->type != V4L2_BUF_TYPE_META_CAPTURE) + uvc_video_enable(uvc_queue_to_stream(queue), 0); spin_lock_irqsave(&queue->irqlock, flags); uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR); @@ -198,20 +209,39 @@ static const struct vb2_ops uvc_queue_qops = { .stop_streaming = uvc_stop_streaming, }; +static const struct vb2_ops uvc_meta_queue_qops = { + .queue_setup = uvc_queue_setup, + .buf_prepare = uvc_buffer_prepare, + .buf_queue = uvc_buffer_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .stop_streaming = uvc_stop_streaming, +}; + int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type, int drop_corrupted) { int ret; queue->queue.type = type; - queue->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + queue->queue.io_modes = VB2_MMAP | VB2_USERPTR; queue->queue.drv_priv = queue; queue->queue.buf_struct_size = sizeof(struct uvc_buffer); - queue->queue.ops = &uvc_queue_qops; queue->queue.mem_ops = &vb2_vmalloc_memops; queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC | V4L2_BUF_FLAG_TSTAMP_SRC_SOE; queue->queue.lock = &queue->mutex; + + switch (type) { + case V4L2_BUF_TYPE_META_CAPTURE: + queue->queue.ops = &uvc_meta_queue_qops; + break; + default: + queue->queue.io_modes |= VB2_DMABUF; + queue->queue.ops = &uvc_queue_qops; + break; + } + ret = vb2_queue_init(&queue->queue); if (ret) return ret; diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 13f459ea239c..5441553f74e1 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -1120,6 +1120,84 @@ static int uvc_video_encode_data(struct uvc_streaming *stream, } /* ------------------------------------------------------------------------ + * Metadata + */ + +/* + * Additionally to the payload headers we also want to provide the user with USB + * Frame Numbers and system time values. The resulting buffer is thus composed + * of blocks, containing a 64-bit timestamp in nanoseconds, a 16-bit USB Frame + * Number, and a copy of the payload header. + * + * Ideally we want to capture all payload headers for each frame. However, their + * number is unknown and unbound. We thus drop headers that contain no vendor + * data and that either contain no SCR value or an SCR value identical to the + * previous header. + */ +static void uvc_video_decode_meta(struct uvc_streaming *stream, + struct uvc_buffer *meta_buf, + const u8 *mem, unsigned int length) +{ + struct uvc_meta_buf *meta; + size_t len_std = 2; + bool has_pts, has_scr; + unsigned long flags; + unsigned int sof; + ktime_t time; + const u8 *scr; + + if (!meta_buf || length == 2) + return; + + if (meta_buf->length - meta_buf->bytesused < + length + sizeof(meta->ns) + sizeof(meta->sof)) { + meta_buf->error = 1; + return; + } + + has_pts = mem[1] & UVC_STREAM_PTS; + has_scr = mem[1] & UVC_STREAM_SCR; + + if (has_pts) { + len_std += 4; + scr = mem + 6; + } else { + scr = mem + 2; + } + + if (has_scr) + len_std += 6; + + if (stream->meta.format == V4L2_META_FMT_UVC) + length = len_std; + + if (length == len_std && (!has_scr || + !memcmp(scr, stream->clock.last_scr, 6))) + return; + + meta = (struct uvc_meta_buf *)((u8 *)meta_buf->mem + meta_buf->bytesused); + local_irq_save(flags); + time = uvc_video_get_time(); + sof = usb_get_current_frame_number(stream->dev->udev); + local_irq_restore(flags); + put_unaligned(ktime_to_ns(time), &meta->ns); + put_unaligned(sof, &meta->sof); + + if (has_scr) + memcpy(stream->clock.last_scr, scr, 6); + + memcpy(&meta->length, mem, length); + meta_buf->bytesused += length + sizeof(meta->ns) + sizeof(meta->sof); + + uvc_trace(UVC_TRACE_FRAME, + "%s(): t-sys %lluns, SOF %u, len %u, flags 0x%x, PTS %u, STC %u frame SOF %u\n", + __func__, time, meta->sof, meta->length, meta->flags, + has_pts ? *(u32 *)meta->buf : 0, + has_scr ? *(u32 *)scr : 0, + has_scr ? *(u32 *)(scr + 4) & 0x7ff : 0); +} + +/* ------------------------------------------------------------------------ * URB handling */ @@ -1137,8 +1215,29 @@ static void uvc_video_validate_buffer(const struct uvc_streaming *stream, /* * Completion handler for video URBs. */ + +static void uvc_video_next_buffers(struct uvc_streaming *stream, + struct uvc_buffer **video_buf, struct uvc_buffer **meta_buf) +{ + if (*meta_buf) { + struct vb2_v4l2_buffer *vb2_meta = &(*meta_buf)->buf; + const struct vb2_v4l2_buffer *vb2_video = &(*video_buf)->buf; + + vb2_meta->sequence = vb2_video->sequence; + vb2_meta->field = vb2_video->field; + vb2_meta->vb2_buf.timestamp = vb2_video->vb2_buf.timestamp; + + (*meta_buf)->state = UVC_BUF_STATE_READY; + if (!(*meta_buf)->error) + (*meta_buf)->error = (*video_buf)->error; + *meta_buf = uvc_queue_next_buffer(&stream->meta.queue, + *meta_buf); + } + *video_buf = uvc_queue_next_buffer(&stream->queue, *video_buf); +} + static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf) + struct uvc_buffer *buf, struct uvc_buffer *meta_buf) { u8 *mem; int ret, i; @@ -1160,14 +1259,15 @@ static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream, urb->iso_frame_desc[i].actual_length); if (ret == -EAGAIN) { uvc_video_validate_buffer(stream, buf); - buf = uvc_queue_next_buffer(&stream->queue, - buf); + uvc_video_next_buffers(stream, &buf, &meta_buf); } } while (ret == -EAGAIN); if (ret < 0) continue; + uvc_video_decode_meta(stream, meta_buf, mem, ret); + /* Decode the payload data. */ uvc_video_decode_data(stream, buf, mem + ret, urb->iso_frame_desc[i].actual_length - ret); @@ -1178,13 +1278,13 @@ static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream, if (buf->state == UVC_BUF_STATE_READY) { uvc_video_validate_buffer(stream, buf); - buf = uvc_queue_next_buffer(&stream->queue, buf); + uvc_video_next_buffers(stream, &buf, &meta_buf); } } } static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf) + struct uvc_buffer *buf, struct uvc_buffer *meta_buf) { u8 *mem; int len, ret; @@ -1207,8 +1307,7 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, do { ret = uvc_video_decode_start(stream, buf, mem, len); if (ret == -EAGAIN) - buf = uvc_queue_next_buffer(&stream->queue, - buf); + uvc_video_next_buffers(stream, &buf, &meta_buf); } while (ret == -EAGAIN); /* If an error occurred skip the rest of the payload. */ @@ -1218,6 +1317,8 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, memcpy(stream->bulk.header, mem, ret); stream->bulk.header_size = ret; + uvc_video_decode_meta(stream, meta_buf, mem, ret); + mem += ret; len -= ret; } @@ -1241,7 +1342,7 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, uvc_video_decode_end(stream, buf, stream->bulk.header, stream->bulk.payload_size); if (buf->state == UVC_BUF_STATE_READY) - uvc_queue_next_buffer(&stream->queue, buf); + uvc_video_next_buffers(stream, &buf, &meta_buf); } stream->bulk.header_size = 0; @@ -1251,7 +1352,7 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream, } static void uvc_video_encode_bulk(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf) + struct uvc_buffer *buf, struct uvc_buffer *meta_buf) { u8 *mem = urb->transfer_buffer; int len = stream->urb_size, ret; @@ -1297,7 +1398,10 @@ static void uvc_video_complete(struct urb *urb) { struct uvc_streaming *stream = urb->context; struct uvc_video_queue *queue = &stream->queue; + struct uvc_video_queue *qmeta = &stream->meta.queue; + struct vb2_queue *vb2_qmeta = stream->meta.vdev.queue; struct uvc_buffer *buf = NULL; + struct uvc_buffer *buf_meta = NULL; unsigned long flags; int ret; @@ -1316,6 +1420,8 @@ static void uvc_video_complete(struct urb *urb) case -ECONNRESET: /* usb_unlink_urb() called. */ case -ESHUTDOWN: /* The endpoint is being disabled. */ uvc_queue_cancel(queue, urb->status == -ESHUTDOWN); + if (vb2_qmeta) + uvc_queue_cancel(qmeta, urb->status == -ESHUTDOWN); return; } @@ -1325,7 +1431,15 @@ static void uvc_video_complete(struct urb *urb) queue); spin_unlock_irqrestore(&queue->irqlock, flags); - stream->decode(urb, stream, buf); + if (vb2_qmeta) { + spin_lock_irqsave(&qmeta->irqlock, flags); + if (!list_empty(&qmeta->irqqueue)) + buf_meta = list_first_entry(&qmeta->irqqueue, + struct uvc_buffer, queue); + spin_unlock_irqrestore(&qmeta->irqlock, flags); + } + + stream->decode(urb, stream, buf, buf_meta); if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n", diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index c36fa0991141..961d7c13b27b 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -479,6 +479,8 @@ struct uvc_stats_stream { unsigned int max_sof; /* Maximum STC.SOF value */ }; +#define UVC_METATADA_BUF_SIZE 1024 + struct uvc_streaming { struct list_head list; struct uvc_device *dev; @@ -510,7 +512,13 @@ struct uvc_streaming { unsigned int frozen : 1; struct uvc_video_queue queue; void (*decode) (struct urb *urb, struct uvc_streaming *video, - struct uvc_buffer *buf); + struct uvc_buffer *buf, struct uvc_buffer *meta_buf); + + struct { + struct video_device vdev; + struct uvc_video_queue queue; + __u32 format; + } meta; /* Context data used by the bulk completion handler. */ struct { @@ -552,6 +560,8 @@ struct uvc_streaming { u16 last_sof; u16 sof_offset; + u8 last_scr[6]; + spinlock_t lock; } clock; }; @@ -561,6 +571,7 @@ struct uvc_device { struct usb_interface *intf; unsigned long warnings; __u32 quirks; + __u32 meta_format; int intfnum; char name[32]; @@ -715,6 +726,7 @@ extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, void uvc_video_clock_update(struct uvc_streaming *stream, struct vb2_v4l2_buffer *vbuf, struct uvc_buffer *buf); +int uvc_meta_register(struct uvc_streaming *stream); int uvc_register_video_device(struct uvc_device *dev, struct uvc_streaming *stream, @@ -777,7 +789,7 @@ extern struct usb_host_endpoint *uvc_find_endpoint( /* Quirks support */ void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream, - struct uvc_buffer *buf); + struct uvc_buffer *buf, struct uvc_buffer *meta_buf); /* debugfs and statistics */ void uvc_debugfs_init(void); |