3  *	uvc_queue.c  --  USB Video Class driver - Buffers management
27  * Video buffers queue management.
29  * Video queues is initialized by uvcg_queue_init(). The function performs
32  * Video buffers are managed by videobuf2. The driver uses a mutex to protect
47 	struct uvc_video *video = container_of(queue, struct uvc_video, queue);  in uvc_queue_setup()  local
56 	sizes[0] = video->imagesize;  in uvc_queue_setup()
64 	struct uvc_video *video = container_of(queue, struct uvc_video, queue);  in uvc_buffer_prepare()  local
90 		if (video->reqs_per_frame != 0)	{  in uvc_buffer_prepare()
93 					(video->reqs_per_frame * UVCG_REQUEST_HEADER_LEN),  in uvc_buffer_prepare()
94 					video->reqs_per_frame);  in uvc_buffer_prepare()
95 			if (buf->req_payload_size > video->req_size)  in uvc_buffer_prepare()
96 				buf->req_payload_size = video->req_size;  in uvc_buffer_prepare()
98 			buf->req_payload_size = video->max_req_size;  in uvc_buffer_prepare()
137 	struct uvc_video *video = container_of(queue, struct uvc_video, queue);  in uvcg_queue_init()  local
138 	struct usb_composite_dev *cdev = video->uvc->func.config->cdev;  in uvcg_queue_init()
170  * Free the video buffers.
178  * Allocate the video buffers.
209  * Dequeue a video buffer. If nonblocking is false, block until a buffer is
219  * Poll the video queue.
221  * This function implements video queue polling and is intended to be used by
249  * Cancel the video buffers queue.
288  * Enable or disable the video buffers queue.
290  * The queue must be enabled before starting video acquisition and must be
291  * disabled after stopping it. This ensures that the video buffers queue
295  * Enabling the video queue initializes parameters (such as sequence number,
298  * Disabling the video queue cancels the queue and removes all buffers from