Lines Matching refs:video
27 uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_header() argument
31 data[1] = UVC_STREAM_EOH | video->fid; in uvc_video_encode_header()
33 if (buf->bytesused - video->queue.buf_used <= len - 2) in uvc_video_encode_header()
40 uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_data() argument
43 struct uvc_video_queue *queue = &video->queue; in uvc_video_encode_data()
58 uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, in uvc_video_encode_bulk() argument
62 int len = video->req_size; in uvc_video_encode_bulk()
66 if (video->payload_size == 0) { in uvc_video_encode_bulk()
67 ret = uvc_video_encode_header(video, buf, mem, len); in uvc_video_encode_bulk()
68 video->payload_size += ret; in uvc_video_encode_bulk()
74 len = min((int)(video->max_payload_size - video->payload_size), len); in uvc_video_encode_bulk()
75 ret = uvc_video_encode_data(video, buf, mem, len); in uvc_video_encode_bulk()
77 video->payload_size += ret; in uvc_video_encode_bulk()
80 req->length = video->req_size - len; in uvc_video_encode_bulk()
81 req->zero = video->payload_size == video->max_payload_size; in uvc_video_encode_bulk()
83 if (buf->bytesused == video->queue.buf_used) { in uvc_video_encode_bulk()
84 video->queue.buf_used = 0; in uvc_video_encode_bulk()
86 uvcg_queue_next_buffer(&video->queue, buf); in uvc_video_encode_bulk()
87 video->fid ^= UVC_STREAM_FID; in uvc_video_encode_bulk()
89 video->payload_size = 0; in uvc_video_encode_bulk()
92 if (video->payload_size == video->max_payload_size || in uvc_video_encode_bulk()
93 buf->bytesused == video->queue.buf_used) in uvc_video_encode_bulk()
94 video->payload_size = 0; in uvc_video_encode_bulk()
98 uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, in uvc_video_encode_isoc() argument
102 int len = video->req_size; in uvc_video_encode_isoc()
106 ret = uvc_video_encode_header(video, buf, mem, len); in uvc_video_encode_isoc()
111 ret = uvc_video_encode_data(video, buf, mem, len); in uvc_video_encode_isoc()
114 req->length = video->req_size - len; in uvc_video_encode_isoc()
116 if (buf->bytesused == video->queue.buf_used) { in uvc_video_encode_isoc()
117 video->queue.buf_used = 0; in uvc_video_encode_isoc()
119 uvcg_queue_next_buffer(&video->queue, buf); in uvc_video_encode_isoc()
120 video->fid ^= UVC_STREAM_FID; in uvc_video_encode_isoc()
161 struct uvc_video *video = req->context; in uvc_video_complete() local
162 struct uvc_video_queue *queue = &video->queue; in uvc_video_complete()
183 spin_lock_irqsave(&video->queue.irqlock, flags); in uvc_video_complete()
184 buf = uvcg_queue_head(&video->queue); in uvc_video_complete()
186 spin_unlock_irqrestore(&video->queue.irqlock, flags); in uvc_video_complete()
190 video->encode(req, video, buf); in uvc_video_complete()
195 spin_unlock_irqrestore(&video->queue.irqlock, flags); in uvc_video_complete()
199 spin_unlock_irqrestore(&video->queue.irqlock, flags); in uvc_video_complete()
204 spin_lock_irqsave(&video->req_lock, flags); in uvc_video_complete()
205 list_add_tail(&req->list, &video->req_free); in uvc_video_complete()
206 spin_unlock_irqrestore(&video->req_lock, flags); in uvc_video_complete()
210 uvc_video_free_requests(struct uvc_video *video) in uvc_video_free_requests() argument
215 if (video->req[i]) { in uvc_video_free_requests()
216 usb_ep_free_request(video->ep, video->req[i]); in uvc_video_free_requests()
217 video->req[i] = NULL; in uvc_video_free_requests()
220 if (video->req_buffer[i]) { in uvc_video_free_requests()
221 kfree(video->req_buffer[i]); in uvc_video_free_requests()
222 video->req_buffer[i] = NULL; in uvc_video_free_requests()
226 INIT_LIST_HEAD(&video->req_free); in uvc_video_free_requests()
227 video->req_size = 0; in uvc_video_free_requests()
232 uvc_video_alloc_requests(struct uvc_video *video) in uvc_video_alloc_requests() argument
238 BUG_ON(video->req_size); in uvc_video_alloc_requests()
240 req_size = video->ep->maxpacket in uvc_video_alloc_requests()
241 * max_t(unsigned int, video->ep->maxburst, 1) in uvc_video_alloc_requests()
242 * (video->ep->mult); in uvc_video_alloc_requests()
245 video->req_buffer[i] = kmalloc(req_size, GFP_KERNEL); in uvc_video_alloc_requests()
246 if (video->req_buffer[i] == NULL) in uvc_video_alloc_requests()
249 video->req[i] = usb_ep_alloc_request(video->ep, GFP_KERNEL); in uvc_video_alloc_requests()
250 if (video->req[i] == NULL) in uvc_video_alloc_requests()
253 video->req[i]->buf = video->req_buffer[i]; in uvc_video_alloc_requests()
254 video->req[i]->length = 0; in uvc_video_alloc_requests()
255 video->req[i]->complete = uvc_video_complete; in uvc_video_alloc_requests()
256 video->req[i]->context = video; in uvc_video_alloc_requests()
258 list_add_tail(&video->req[i]->list, &video->req_free); in uvc_video_alloc_requests()
261 video->req_size = req_size; in uvc_video_alloc_requests()
266 uvc_video_free_requests(video); in uvc_video_alloc_requests()
280 int uvcg_video_pump(struct uvc_video *video) in uvcg_video_pump() argument
282 struct uvc_video_queue *queue = &video->queue; in uvcg_video_pump()
296 spin_lock_irqsave(&video->req_lock, flags); in uvcg_video_pump()
297 if (list_empty(&video->req_free)) { in uvcg_video_pump()
298 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
301 req = list_first_entry(&video->req_free, struct usb_request, in uvcg_video_pump()
304 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
316 video->encode(req, video, buf); in uvcg_video_pump()
319 ret = usb_ep_queue(video->ep, req, GFP_ATOMIC); in uvcg_video_pump()
322 usb_ep_set_halt(video->ep); in uvcg_video_pump()
330 spin_lock_irqsave(&video->req_lock, flags); in uvcg_video_pump()
331 list_add_tail(&req->list, &video->req_free); in uvcg_video_pump()
332 spin_unlock_irqrestore(&video->req_lock, flags); in uvcg_video_pump()
339 int uvcg_video_enable(struct uvc_video *video, int enable) in uvcg_video_enable() argument
344 if (video->ep == NULL) { in uvcg_video_enable()
352 if (video->req[i]) in uvcg_video_enable()
353 usb_ep_dequeue(video->ep, video->req[i]); in uvcg_video_enable()
355 uvc_video_free_requests(video); in uvcg_video_enable()
356 uvcg_queue_enable(&video->queue, 0); in uvcg_video_enable()
360 if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0) in uvcg_video_enable()
363 if ((ret = uvc_video_alloc_requests(video)) < 0) in uvcg_video_enable()
366 if (video->max_payload_size) { in uvcg_video_enable()
367 video->encode = uvc_video_encode_bulk; in uvcg_video_enable()
368 video->payload_size = 0; in uvcg_video_enable()
370 video->encode = uvc_video_encode_isoc; in uvcg_video_enable()
372 return uvcg_video_pump(video); in uvcg_video_enable()
378 int uvcg_video_init(struct uvc_video *video) in uvcg_video_init() argument
380 INIT_LIST_HEAD(&video->req_free); in uvcg_video_init()
381 spin_lock_init(&video->req_lock); in uvcg_video_init()
383 video->fcc = V4L2_PIX_FMT_YUYV; in uvcg_video_init()
384 video->bpp = 16; in uvcg_video_init()
385 video->width = 320; in uvcg_video_init()
386 video->height = 240; in uvcg_video_init()
387 video->imagesize = 320 * 240 * 2; in uvcg_video_init()
390 uvcg_queue_init(&video->queue, V4L2_BUF_TYPE_VIDEO_OUTPUT, in uvcg_video_init()
391 &video->mutex); in uvcg_video_init()