Lines Matching refs:video
31 uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_header() argument
35 data[1] = UVC_STREAM_EOH | video->fid; in uvc_video_encode_header()
37 if (buf->bytesused - video->queue.buf_used <= len - 2) in uvc_video_encode_header()
44 uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_data() argument
47 struct uvc_video_queue *queue = &video->queue; in uvc_video_encode_data()
62 uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, in uvc_video_encode_bulk() argument
66 int len = video->req_size; in uvc_video_encode_bulk()
70 if (video->payload_size == 0) { in uvc_video_encode_bulk()
71 ret = uvc_video_encode_header(video, buf, mem, len); in uvc_video_encode_bulk()
72 video->payload_size += ret; in uvc_video_encode_bulk()
78 len = min((int)(video->max_payload_size - video->payload_size), len); in uvc_video_encode_bulk()
79 ret = uvc_video_encode_data(video, buf, mem, len); in uvc_video_encode_bulk()
81 video->payload_size += ret; in uvc_video_encode_bulk()
84 req->length = video->req_size - len; in uvc_video_encode_bulk()
85 req->zero = video->payload_size == video->max_payload_size; in uvc_video_encode_bulk()
87 if (buf->bytesused == video->queue.buf_used) { in uvc_video_encode_bulk()
88 video->queue.buf_used = 0; in uvc_video_encode_bulk()
90 uvcg_queue_next_buffer(&video->queue, buf); in uvc_video_encode_bulk()
91 video->fid ^= UVC_STREAM_FID; in uvc_video_encode_bulk()
93 video->payload_size = 0; in uvc_video_encode_bulk()
96 if (video->payload_size == video->max_payload_size || in uvc_video_encode_bulk()
97 buf->bytesused == video->queue.buf_used) in uvc_video_encode_bulk()
98 video->payload_size = 0; in uvc_video_encode_bulk()
102 uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, in uvc_video_encode_isoc() argument
106 int len = video->req_size; in uvc_video_encode_isoc()
110 ret = uvc_video_encode_header(video, buf, mem, len); in uvc_video_encode_isoc()
115 ret = uvc_video_encode_data(video, buf, mem, len); in uvc_video_encode_isoc()
118 req->length = video->req_size - len; in uvc_video_encode_isoc()
120 if (buf->bytesused == video->queue.buf_used) { in uvc_video_encode_isoc()
121 video->queue.buf_used = 0; in uvc_video_encode_isoc()
123 uvcg_queue_next_buffer(&video->queue, buf); in uvc_video_encode_isoc()
124 video->fid ^= UVC_STREAM_FID; in uvc_video_encode_isoc()
132 static int uvcg_video_ep_queue(struct uvc_video *video, struct usb_request *req) in uvcg_video_ep_queue() argument
136 ret = usb_ep_queue(video->ep, req, GFP_ATOMIC); in uvcg_video_ep_queue()
140 if (usb_endpoint_xfer_bulk(video->ep->desc)) in uvcg_video_ep_queue()
141 usb_ep_set_halt(video->ep); in uvcg_video_ep_queue()
180 struct uvc_video *video = req->context; in uvc_video_complete() local
181 struct uvc_video_queue *queue = &video->queue; in uvc_video_complete()
202 spin_lock_irqsave(&video->queue.irqlock, flags); in uvc_video_complete()
203 buf = uvcg_queue_head(&video->queue); in uvc_video_complete()
205 spin_unlock_irqrestore(&video->queue.irqlock, flags); in uvc_video_complete()
209 video->encode(req, video, buf); in uvc_video_complete()
211 ret = uvcg_video_ep_queue(video, req); in uvc_video_complete()
212 spin_unlock_irqrestore(&video->queue.irqlock, flags); in uvc_video_complete()
222 spin_lock_irqsave(&video->req_lock, flags); in uvc_video_complete()
223 list_add_tail(&req->list, &video->req_free); in uvc_video_complete()
224 spin_unlock_irqrestore(&video->req_lock, flags); in uvc_video_complete()
228 uvc_video_free_requests(struct uvc_video *video) in uvc_video_free_requests() argument
233 if (video->req[i]) { in uvc_video_free_requests()
234 usb_ep_free_request(video->ep, video->req[i]); in uvc_video_free_requests()
235 video->req[i] = NULL; in uvc_video_free_requests()
238 if (video->req_buffer[i]) { in uvc_video_free_requests()
239 kfree(video->req_buffer[i]); in uvc_video_free_requests()
240 video->req_buffer[i] = NULL; in uvc_video_free_requests()
244 INIT_LIST_HEAD(&video->req_free); in uvc_video_free_requests()
245 video->req_size = 0; in uvc_video_free_requests()
250 uvc_video_alloc_requests(struct uvc_video *video) in uvc_video_alloc_requests() argument
256 BUG_ON(video->req_size); in uvc_video_alloc_requests()
258 req_size = video->ep->maxpacket in uvc_video_alloc_requests()
259 * max_t(unsigned int, video->ep->maxburst, 1) in uvc_video_alloc_requests()
260 * (video->ep->mult); in uvc_video_alloc_requests()
263 video->req_buffer[i] = kmalloc(req_size, GFP_KERNEL); in uvc_video_alloc_requests()
264 if (video->req_buffer[i] == NULL) in uvc_video_alloc_requests()
267 video->req[i] = usb_ep_alloc_request(video->ep, GFP_KERNEL); in uvc_video_alloc_requests()
268 if (video->req[i] == NULL) in uvc_video_alloc_requests()
271 video->req[i]->buf = video->req_buffer[i]; in uvc_video_alloc_requests()
272 video->req[i]->length = 0; in uvc_video_alloc_requests()
273 video->req[i]->complete = uvc_video_complete; in uvc_video_alloc_requests()
274 video->req[i]->context = video; in uvc_video_alloc_requests()
276 list_add_tail(&video->req[i]->list, &video->req_free); in uvc_video_alloc_requests()
279 video->req_size = req_size; in uvc_video_alloc_requests()
284 uvc_video_free_requests(video); in uvc_video_alloc_requests()
298 int uvcg_video_pump(struct uvc_video *video) in uvcg_video_pump() argument
300 struct uvc_video_queue *queue = &video->queue; in uvcg_video_pump()
314 spin_lock_irqsave(&video->req_lock, flags); in uvcg_video_pump()
315 if (list_empty(&video->req_free)) { in uvcg_video_pump()
316 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
319 req = list_first_entry(&video->req_free, struct usb_request, in uvcg_video_pump()
322 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
334 video->encode(req, video, buf); in uvcg_video_pump()
337 ret = uvcg_video_ep_queue(video, req); in uvcg_video_pump()
346 spin_lock_irqsave(&video->req_lock, flags); in uvcg_video_pump()
347 list_add_tail(&req->list, &video->req_free); in uvcg_video_pump()
348 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
355 int uvcg_video_enable(struct uvc_video *video, int enable) in uvcg_video_enable() argument
360 if (video->ep == NULL) { in uvcg_video_enable()
368 if (video->req[i]) in uvcg_video_enable()
369 usb_ep_dequeue(video->ep, video->req[i]); in uvcg_video_enable()
371 uvc_video_free_requests(video); in uvcg_video_enable()
372 uvcg_queue_enable(&video->queue, 0); in uvcg_video_enable()
376 if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0) in uvcg_video_enable()
379 if ((ret = uvc_video_alloc_requests(video)) < 0) in uvcg_video_enable()
382 if (video->max_payload_size) { in uvcg_video_enable()
383 video->encode = uvc_video_encode_bulk; in uvcg_video_enable()
384 video->payload_size = 0; in uvcg_video_enable()
386 video->encode = uvc_video_encode_isoc; in uvcg_video_enable()
388 return uvcg_video_pump(video); in uvcg_video_enable()
394 int uvcg_video_init(struct uvc_video *video) in uvcg_video_init() argument
396 INIT_LIST_HEAD(&video->req_free); in uvcg_video_init()
397 spin_lock_init(&video->req_lock); in uvcg_video_init()
399 video->fcc = V4L2_PIX_FMT_YUYV; in uvcg_video_init()
400 video->bpp = 16; in uvcg_video_init()
401 video->width = 320; in uvcg_video_init()
402 video->height = 240; in uvcg_video_init()
403 video->imagesize = 320 * 240 * 2; in uvcg_video_init()
406 uvcg_queue_init(&video->queue, V4L2_BUF_TYPE_VIDEO_OUTPUT, in uvcg_video_init()
407 &video->mutex); in uvcg_video_init()