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| v1.1 |
| bktr.c |
/* sane - Scanner Access Now Easy.
Copyright (C) 2001, 2002 Daan Vreeken
This file is part of the SANE package.
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.
As a special exception, the authors of SANE give permission for
additional uses of the libraries contained in this release of SANE.
The exception is that, if you link a SANE library with other files
to produce an executable, this does not by itself cause the
resulting executable to be covered by the GNU General Public
License. Your use of that executable is in no way restricted on
account of linking the SANE library code into it.
This exception does not, however, invalidate any other reasons why
the executable file might be covered by the GNU General Public
License.
If you submit changes to SANE to the maintainers to be included in
a subsequent release, you agree by submitting the changes that
those changes may be distributed with this exception intact.
If you write modifications of your own for SANE, it is your choice
whether to permit this exception to apply to your modifications.
If you do not wish that, delete this exception notice. */
#include "sane/config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <signal.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <machine/ioctl_bt848.h>
#include <machine/ioctl_meteor.h>
#include "sane/sane.h"
#include "sane/sanei.h"
#include "sane/saneopts.h"
#define BACKEND_NAME bktr
#include "sane/sanei_backend.h"
#define MAGIC (void *)0x123
static int is_open = 0;
static SANE_Fixed Width = 320;
static SANE_Fixed Height = 240;
static SANE_Fixed SelectedSource = 1;
static SANE_Byte *FrameBuffer = NULL;
static SANE_Byte *FrameEnd = NULL;
static SANE_Byte *FramePos = NULL;
int Device = 0;
static const SANE_Range OptionRange =
{
0,255,0
};
static const SANE_String_Const InputList[] =
{
"EXT-1",
"Tuner",
"SVHS-composite",
"SVHS",
"EXT-2",
0
};
static const SANE_Option_Descriptor Option[] =
{
{
SANE_NAME_NUM_OPTIONS,
SANE_TITLE_NUM_OPTIONS,
SANE_DESC_NUM_OPTIONS,
SANE_TYPE_INT,
SANE_UNIT_NONE,
sizeof (SANE_Word),
SANE_CAP_SOFT_DETECT,
SANE_CONSTRAINT_NONE,
{NULL}
},
{
SANE_NAME_BRIGHTNESS,
SANE_TITLE_BRIGHTNESS,
SANE_DESC_BRIGHTNESS,
SANE_TYPE_INT,
SANE_UNIT_NONE,
sizeof (SANE_Word),
SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT,
SANE_CONSTRAINT_RANGE,
{(SANE_String_Const *)&OptionRange} // this is ANSI conformant!
},
{
SANE_NAME_CONTRAST,
SANE_TITLE_CONTRAST,
SANE_DESC_CONTRAST,
SANE_TYPE_INT,
SANE_UNIT_NONE,
sizeof (SANE_Word),
SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT,
SANE_CONSTRAINT_RANGE,
{(SANE_String_Const *)&OptionRange} // this is ANSI conformant!
},
{
SANE_NAME_HUE,
SANE_TITLE_HUE,
SANE_DESC_HUE,
SANE_TYPE_INT,
SANE_UNIT_NONE,
sizeof (SANE_Word),
SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT,
SANE_CONSTRAINT_RANGE,
{(SANE_String_Const *)&OptionRange} // this is ANSI conformant!
},
{
"source",
"Video source",
"Selects the video source",
SANE_TYPE_STRING,
SANE_UNIT_NONE,
15, //sizeof("SVHS-composite")
SANE_UNIT_NONE,
SANE_CONSTRAINT_STRING_LIST,
{InputList},
},
};
static SANE_Parameters parms =
{
SANE_FRAME_RGB,
0,
0, // Number of bytes returned per scan line:
0, // Number of pixels per scan line.
0, // Number of lines for the current scan.
8, // Number of bits per sample.
};
//
///// Daantje's test bktr SANE backend.
//
void DEBUG(int Level, char *Fmt, ...)
{
va_list List;
Level=0;
va_start(List,Fmt);
fprintf(stderr,"bktr:");
vfprintf(stderr,Fmt,List);
fprintf(stderr,"\n");
va_end(List);
}
SANE_Status sane_init (SANE_Int *version_code, SANE_Auth_Callback authorize)
{
DBG_INIT();
DEBUG(2, "sane_init: version_code %s 0, authorize %s 0",
version_code == 0 ? "=" : "!=", authorize == 0 ? "=" : "!=");
if (version_code)
*version_code=SANE_VERSION_CODE(V_MAJOR,V_MINOR,0);
return SANE_STATUS_GOOD;
}
void sane_exit (void)
{
DEBUG(2, "sane_exit");
}
//=========--
//==============---------- Device select/open/close
//=========--
static const SANE_Device dev[] =
{
{
"/dev/bktr0",
"Brooktree",
"bt878",
"video capture card"
},
};
SANE_Status sane_get_devices(const SANE_Device ***device_list, SANE_Bool local_only)
{
static const SANE_Device *devlist[] =
{
dev,0
};
DEBUG(2, "sane_get_devices: local_only = %d", local_only);
*device_list = devlist;
return SANE_STATUS_GOOD;
}
SANE_Status sane_open(SANE_String_Const devicename, SANE_Handle *handle)
{
int i;
int Sig = SIGUSR1;
if (!devicename)
return SANE_STATUS_INVAL;
DEBUG(2, "sane_open: devicename = \"%s\"", devicename);
if (!devicename[0])
i=0;
else
for (i=0; i<NELEMS(dev); ++i)
if (strcmp(devicename,dev[i].name) == 0)
break;
if (i>=NELEMS(dev))
return SANE_STATUS_INVAL;
if (is_open)
return SANE_STATUS_DEVICE_BUSY;
Device=open("/dev/bktr0",O_RDONLY);
if (Device==-1)
return SANE_STATUS_ACCESS_DENIED;
if (ioctl(Device,METEORSSIGNAL,&Sig)==-1)
{
DEBUG(1,"Could not do ioctl!");
return SANE_STATUS_INVAL;
}
is_open=1;
*handle=MAGIC;
return SANE_STATUS_GOOD;
}
void sane_close (SANE_Handle handle)
{
DEBUG(2,"sane_close");
if (FrameBuffer!=NULL)
{
free(FrameBuffer);
}
if (Device!=0)
{
close(Device);
Device=0;
}
if (handle==MAGIC)
is_open=0;
}
const SANE_Option_Descriptor *sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
{
DEBUG(2, "sane_get_option_descriptor: option = %d", option);
if (handle!=MAGIC || !is_open)
return NULL; // wrong device
if (option<0 || option>=NELEMS(Option))
return NULL;
return &Option[option];
}
SANE_Status sane_control_option (
SANE_Handle handle, SANE_Int option,
SANE_Action action, void *value,
SANE_Int *info)
{
SANE_Int myinfo = 0;
SANE_Status status;
unsigned char Temp;
unsigned long Input;
int Cnt;
int Found = 0;
DEBUG(2,"sane_control_option: handle=%p, opt=%d, act=%d, val=%p, info=%p",
handle, option, action, value, info);
if (handle!=MAGIC || !is_open)
return SANE_STATUS_INVAL; //Unknown handle...
if (option<0 || option>=NELEMS(Option))
return SANE_STATUS_INVAL; //Unknown option...
switch (action)
{
case SANE_ACTION_SET_VALUE:
status=sanei_constrain_value(Option+option,value,&myinfo);
if (status!=SANE_STATUS_GOOD)
return status;
switch (option)
{
case 1: //Brightness
Temp=(u_char)*(SANE_Word *)value;
DEBUG(1,"lala: %d",Temp);
if (ioctl(Device,METEORSBRIG,&Temp)==-1)
return SANE_STATUS_INVAL;
break;
case 2: //Contrast
Temp=(u_char)*(SANE_Word *)value;
if (ioctl(Device,METEORSCONT,&Temp)==-1)
return SANE_STATUS_INVAL;
break;
case 3: //Hue
Temp=(u_char)*(SANE_Word *)value;
Temp-=128;
if (ioctl(Device,METEORSHUE,&Temp)==-1)
return SANE_STATUS_INVAL;
break;
case 4: //Source
for (Cnt=0; Cnt<=4; Cnt++)
if (!strcmp(value,InputList[Cnt]))
{
Found=1;
SelectedSource=Cnt;
switch (SelectedSource)
{
case 0:
Input=METEOR_INPUT_DEV0;
break;
case 1:
Input=METEOR_INPUT_DEV1;
break;
case 2:
Input=METEOR_INPUT_DEV2;
break;
case 3:
Input=METEOR_INPUT_DEV_SVIDEO;
break;
case 4:
Input=METEOR_INPUT_DEV3;
break;
}
if (ioctl(Device,METEORSINPUT,&Input)==-1)
return SANE_STATUS_INVAL;
}
if (!Found)
return SANE_STATUS_INVAL;
break;
default:
return SANE_STATUS_INVAL;
}
break;
case SANE_ACTION_GET_VALUE:
switch (option)
{
case 0: //NUMOPTS
*(SANE_Word *)value=NELEMS(Option);
break;
case 1: //Brightness
if (ioctl(Device,METEORGBRIG,&Temp)==-1)
return SANE_STATUS_INVAL;
//BUG in bktr_core.c :
//128 is substracted from our value when setting
//brightness, but when reading it, it isn't added
//up again... So we'll have to do that ourselfs.
Temp+=128;
*(SANE_Word *)value=(SANE_Word)Temp;
break;
case 2: //Contrast
if (ioctl(Device,METEORGCONT,&Temp)==-1)
return SANE_STATUS_INVAL;
*(SANE_Word *)value=Temp;
break;
case 3: //Hue
if (ioctl(Device,METEORGHUE,&Temp)==-1)
return SANE_STATUS_INVAL;
Temp+=128;
*(SANE_Word *)value=Temp;
break;
case 4: //Source
strcpy (value,InputList[SelectedSource]);
break;
default:
return SANE_STATUS_INVAL;
}
break;
case SANE_ACTION_SET_AUTO:
return SANE_STATUS_UNSUPPORTED; // We are DUMB
}
if (info)
*info=myinfo;
return SANE_STATUS_GOOD;
}
SANE_Status sane_get_parameters(SANE_Handle handle,
SANE_Parameters *params)
{
int rc = SANE_STATUS_GOOD;
DEBUG(2,"sane_get_parameters");
if (handle!=MAGIC || !is_open)
rc=SANE_STATUS_INVAL; //Unknown handle...
parms.format=SANE_FRAME_RGB;
parms.bytes_per_line=3*Width;
parms.pixels_per_line=Width;
parms.lines=Height;
parms.depth=8;
parms.last_frame=1;
*params=parms;
return rc;
}
void Capture_SetFormat(void)
{
unsigned long Format;
struct meteor_geomet Geo;
//PAL
Format=BT848_IFORM_F_PALBDGHI;
if (ioctl(Device,BT848SFMT,&Format)==-1)
DEBUG(1,"ioctl failed!");
//Geometry
Geo.columns=Width;
Geo.rows=Height;
Geo.frames=1;
Geo.oformat=METEOR_GEO_RGB24 | METEOR_GEO_ODD_ONLY;
if (ioctl(Device,METEORSETGEO,&Geo)==-1)
DEBUG(1,"ioctl failed!");
}
void Capture_SetSource(void)
{
int Source;
//external video input
Source=METEOR_INPUT_DEV0;
if (ioctl(Device,METEORSINPUT,&Source)==-1)
DEBUG(1,"ioctl failed!");
}
void Ident;
sig_t Capture_SignalHandler(void)
{
//Don't do anything here...
return 0;
}
SANE_Status sane_start(SANE_Handle handle)
{
unsigned long Capture = METEOR_CAP_SINGLE;
int Signal = SIGUSR1;
DEBUG(2,"sane_start");
if (handle!=MAGIC || !is_open)
return SANE_STATUS_INVAL; //Unknown handle...
//Allocate framebuffer for mmap
if (FrameBuffer==NULL)
{
FrameBuffer=(unsigned char *)mmap((caddr_t)0,4*Width*Height,PROT_READ,MAP_SHARED,Device,(off_t)0);
if (FrameBuffer==NULL)
return SANE_STATUS_NO_MEM;
FrameEnd=FrameBuffer+4*Width*Height;
}
//Set capture format...
Capture_SetFormat();
//Set source
Capture_SetSource();
//Set read position to beginning of buffer
FramePos=FrameBuffer;
//Ask bktr device to give us a signal when frame is completed...
if (ioctl(Device,METEORSSIGNAL,&Signal)==-1)
{
DEBUG(1,"bktr does not want to send us a signal!??");
return SANE_STATUS_INVAL;
}
//Install a signal handler
signal(SIGUSR1,(sig_t)&Capture_SignalHandler);
//Start capture
if (ioctl(Device,METEORCAPTUR,&Capture)==-1)
{
DEBUG(1,"coult not start capture!");
return SANE_STATUS_INVAL;
}
wait(NULL);
return SANE_STATUS_GOOD;
}
static SANE_Byte *Src;
static SANE_Byte *Dst;
SANE_Status sane_read(SANE_Handle handle, SANE_Byte *data,
SANE_Int max_length, SANE_Int *length)
{
int Cnt;
long PixelsLeft = (FrameEnd-FramePos)/4;
DEBUG(2,"sane_read: max_length = %d",
max_length);
if (handle!=MAGIC || !is_open || !data || !length)
return SANE_STATUS_INVAL; //Unknown handle or no file to read...
if (PixelsLeft<=0)
{
*length=0;
return SANE_STATUS_EOF;
}
if (max_length>3)
{
if (PixelsLeft>max_length/3)
PixelsLeft=max_length/3;
Src=FramePos;
Dst=data;
for (Cnt=0; Cnt<PixelsLeft; Cnt++)
{
//Reverse BGR to RGB byte order
*Dst++=*(Src+2);
*Dst++=*(Src+1);
*Dst++=*(Src+0);
Src+=4;
}
FramePos+=PixelsLeft*4;
*length=PixelsLeft*3;
if (FramePos==FrameEnd)
return SANE_STATUS_EOF;
}
else
{
DEBUG(1,"Not enough data space to store 1 pixel!");
return SANE_STATUS_INVAL;
}
return SANE_STATUS_GOOD;
}
void sane_cancel(SANE_Handle handle)
{
DEBUG(2, "sane_cancel: handle = %p", handle);
/*
pass = 0;
if (infile!=NULL)
{
fclose (infile);
infile = NULL;
}
*/
}
SANE_Status sane_set_io_mode(SANE_Handle handle, SANE_Bool non_blocking)
{
DEBUG(2,"sane_set_io_mode: handle = %p, non_blocking = %d",handle,
non_blocking);
return SANE_STATUS_UNSUPPORTED;
}
SANE_Status sane_get_select_fd(SANE_Handle handle, SANE_Int *fd)
{
DEBUG(2,"sane_get_select_fd: handle = %p, fd %s 0",handle,
fd ? "!=" : "=");
return SANE_STATUS_UNSUPPORTED;
}
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Email me with questions/comments : Daan <Danovitsch @ Vitsch . net>