linux/drivers/media/pci/ivtv/ivtv-fileops.h
Andy Walls 269c11fbac [media] ivtv, ivtv-alsa: Add initial ivtv-alsa interface driver for ivtv
This is a cut-and-paste port of the cx18-alsa driver to
create an ivtv-alsa interface module for the ivtv driver.
It is not actually hooked-up to the PCM stream DMA buffers
from the ivtv driver yet.  That will be done in a coming change,
since that portion is so very different from the cx18 driver.
This code has all or more of the bugs and shortcomings of the
cx18-alsa interface driver: inconsistent use of itvsc->slock,
ivtv-alsa-mixer.c is dead code, assumes 48 ksps regardless
of the actual setting of the audio capture, problems with
proper struct ivtv and struct ivtv_stream housekeeping,
struct ivtv_open_id.v4l2_fh abuse, and $DIETY knows what else.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-18 13:26:50 -03:00

45 lines
1.7 KiB
C

/*
file operation functions
Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef IVTV_FILEOPS_H
#define IVTV_FILEOPS_H
/* Testing/Debugging */
int ivtv_v4l2_open(struct file *filp);
ssize_t ivtv_v4l2_read(struct file *filp, char __user *buf, size_t count,
loff_t * pos);
ssize_t ivtv_v4l2_write(struct file *filp, const char __user *buf, size_t count,
loff_t * pos);
int ivtv_v4l2_close(struct file *filp);
unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait);
unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table * wait);
int ivtv_start_capture(struct ivtv_open_id *id);
void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end);
int ivtv_start_decoding(struct ivtv_open_id *id, int speed);
void ivtv_mute(struct ivtv *itv);
void ivtv_unmute(struct ivtv *itv);
/* Utilities */
/* Shared with ivtv-alsa module */
int ivtv_claim_stream(struct ivtv_open_id *id, int type);
void ivtv_release_stream(struct ivtv_stream *s);
#endif