libvips/libsrc/video/im_video_v4l1.h

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2007-08-29 18:23:50 +02:00
/* single frame video capture on linux
*/
/*
Copyright (C) 1991-2003 The National Gallery
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/* Video input sources, e.g. tuner, svideo, composite.
*/
#define IM_MAXCHANNELS (10)
#define TUNER (0)
#define COMPOSITE (1)
#define SVIDEO (2)
typedef struct lgrab {
/* Mmap here, plus file descriptor.
*/
char *device;
char *capture_buffer;
int capture_size;
int fd;
/* Current settings.
*/
int c_channel;
int c_width;
int c_height;
int c_ngrabs;
/* Extract capabilities here.
*/
struct video_capability capability;
struct video_channel channel[IM_MAXCHANNELS];
struct video_window window;
struct video_picture picture;
struct video_mbuf mbuf;
struct video_mmap mmap;
} LGrab;
void lgrab_destroy( LGrab *lg );
LGrab *lgrab_new( const char *device );
int lgrab_set_capture_size( LGrab *lg, int width, int height );
int lgrab_set_channel( LGrab *lg, int channel );
int lgrab_set_brightness( LGrab *lg, int brightness );
int lgrab_set_colour( LGrab *lg, int colour );
int lgrab_set_contrast( LGrab *lg, int contrast );
int lgrab_set_hue( LGrab *lg, int hue );
int lgrab_set_ngrabs( LGrab *lg, int ngrabs );
int lgrab_capture( LGrab *lg, IMAGE *im );
int lgrab_grab( IMAGE *im, const char *device,
int channel, int brightness, int colour, int contrast, int hue,
int ngrabs );