linux/drivers/media/usb/em28xx/em28xx-v4l.h

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/*
em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
video capture devices
Copyright (C) 2013-2014 Mauro Carvalho Chehab <m.chehab@samsung.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 version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
void em28xx_stop_vbi_streaming(struct vb2_queue *vq);
extern struct vb2_ops em28xx_vbi_qops;