diff options
author | jkh <jkh@FreeBSD.org> | 1995-02-06 23:20:17 +0000 |
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committer | jkh <jkh@FreeBSD.org> | 1995-02-06 23:20:17 +0000 |
commit | cf3a878379438c57a0061b76504645d924fe8076 (patch) | |
tree | 1e42996e9bb791ba623cc0fbf60eff5f0b178211 /sys/i386/include | |
parent | 630cf84ab0f8b733bce8492a0a15a4324c089069 (diff) | |
download | FreeBSD-src-cf3a878379438c57a0061b76504645d924fe8076.zip FreeBSD-src-cf3a878379438c57a0061b76504645d924fe8076.tar.gz |
The very minimum driver required to support a Video Spigot. See the
copyright notices in the code for information on where to go to pick
up additional useful bits.
Submitted by: Jim Lowe <james@blatz.cs.uwm.edu>
Diffstat (limited to 'sys/i386/include')
-rw-r--r-- | sys/i386/include/spigot.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sys/i386/include/spigot.h b/sys/i386/include/spigot.h new file mode 100644 index 0000000..6d95033 --- /dev/null +++ b/sys/i386/include/spigot.h @@ -0,0 +1,80 @@ +/* + * Video spigot capture driver. + * + * Copyright (c) 1995, Jim Lowe. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. 2. + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Version 1.1, Feb 1, 1995. + */ + +/* + * Set up a user interrupt. + */ +#define SPIGOT_SETINT _IOW('s', 5, int) +/* + * Allow/disallow access to the I/O Page. + */ +#define SPIGOT_IOPL_ON _IO ('s', 6) +#define SPIGOT_IOPL_OFF _IO ('s', 7) + +#ifndef KERNEL +/* + * Defines for spigot library. + */ +unsigned short * spigot_open(char *dev); +void spigot_close(void); +void spigot_set_capture_size(int width, int vtof); +unsigned char spigot_start_xfer(int num_frames); +void spigot_stop_xfer(void); +unsigned char spigot_status(void); + +/* + * Define the status bits. + */ +#define SPIGOT_COLOR 0x01 /* Color present (No color) */ +#define SPIGOT_60HZ 0x02 /* 60 hz input signal (50hz) */ +#define SPIGOT_NO_HORIZONTAL_LOCK 0x04 /* Horizontal lock present */ +#define SPIGOT_HPLL_LOCKED 0x08 /* HPLL locked (HPLL unlocked)*/ +#define SPIGOT_VCR_MODE 0x10 /* VCR mode (TV mode) */ +#define SPIGOT_VSYNC_PRESENT 0x20 /* Vsync present */ + +/* + * spigot_open() returns a data address pointing to the spigot data. + * Each read from this address returns the next word. The ``dev'' passed + * is usually "/dev/spigot". Data is described in the phillips desktop + * video data handbook under the 7191 chip. Formats may be either + * YUV 4:2:2 or YUV 4:1:1. A sample device driver for ``nv'' is included + * with this code. + * + * spigot_close() cleans up and closes the device. + * + * spigot_set_capture_size() will set the capture window size. Width should be + * one of: 80, 160, 240, 320, or 640 for NTSC or + * 96, 192, 288, 384 for PAL. + * vtof is the Vertical top of frame offset and must be between 0 and 15 lines. + * + * spigot_start_xfer() will start a transfer from the 7191 to the data fifo. + * spigot_stop_xfer() will clear the data fifo and abort any transfers. + * + * spigot_status() will return the above status bits. + */ +#endif |