diff options
Diffstat (limited to 'backend/dc210.c')
| -rw-r--r-- | backend/dc210.c | 1531 |
1 files changed, 1531 insertions, 0 deletions
diff --git a/backend/dc210.c b/backend/dc210.c new file mode 100644 index 0000000..acfe99a --- /dev/null +++ b/backend/dc210.c @@ -0,0 +1,1531 @@ +/*************************************************************************** + * SANE - Scanner Access Now Easy. + + dc210.c + + 11/11/98 + + This file (C) 1998 Brian J. Murrell + + 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. + + *************************************************************************** + + This file implements a SANE backend for the Kodak DC-210 + digital camera. THIS IS EXTREMELY ALPHA CODE! USE AT YOUR OWN RISK!! + + (feedback to: sane-dc210@interlinx.bc.ca + + This backend is based somewhat on the dc25 backend included in this + package by Peter Fales + + ***************************************************************************/ + +#include "../include/sane/config.h" + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <limits.h> +#include "../include/sane/sanei_jpeg.h" +#include <sys/ioctl.h> + +#include "../include/sane/sane.h" +#include "../include/sane/sanei.h" +#include "../include/sane/saneopts.h" + +#define BACKEND_NAME dc210 +#include "../include/sane/sanei_backend.h" + +#include "dc210.h" + +#ifndef PATH_MAX +# define PATH_MAX 1024 +#endif + +#define MAGIC (void *)0xab730324 +#define DC210_CONFIG_FILE "dc210.conf" +#define THUMBSIZE 20736 + +#ifdef B115200 +# define DEFAULT_BAUD_RATE B115200 +#else +# define DEFAULT_BAUD_RATE B38400 +#endif + +#if defined (__sgi) +# define DEFAULT_TTY "/dev/ttyd1" /* Irix */ +#elif defined (__sun) +# define DEFAULT_TTY "/dev/term/a" /* Solaris */ +#elif defined (hpux) +# define DEFAULT_TTY "/dev/tty1d0" /* HP-UX */ +#elif defined (__osf__) +# define DEFAULT_TTY "/dev/tty00" /* Digital UNIX */ +#else +# define DEFAULT_TTY "/dev/ttyS0" /* Linux */ +#endif + +static SANE_Bool is_open = 0; + +static SANE_Bool dc210_opt_thumbnails; +static SANE_Bool dc210_opt_snap; +static SANE_Bool dc210_opt_lowres; +static SANE_Bool dc210_opt_erase; +static SANE_Bool dumpinquiry; + +static struct jpeg_decompress_struct cinfo; +static djpeg_dest_ptr dest_mgr = NULL; + +static unsigned long cmdrespause = 250000UL; /* pause after sending cmd */ +static unsigned long breakpause = 1000000UL; /* pause after sending break */ + +static int bytes_in_buffer; +static int bytes_read_from_buffer; +static int total_bytes_read; + +static DC210 Camera; + +static SANE_Range image_range = { + 0, + 14, + 0 +}; + +static SANE_Option_Descriptor sod[] = { + { + 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} + } + , + +#define D25_OPT_IMAGE_SELECTION 1 + { + "", + "Image Selection", + "Selection of the image to load.", + SANE_TYPE_GROUP, + SANE_UNIT_NONE, + 0, + 0, + SANE_CONSTRAINT_NONE, + {NULL} + } + , + +#define DC210_OPT_IMAGE_NUMBER 2 + { + "image", + "Image Number", + "Select Image Number to load from camera", + SANE_TYPE_INT, + SANE_UNIT_NONE, + 4, + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT, + SANE_CONSTRAINT_RANGE, + {(void *) & image_range} + } + , + +#define DC210_OPT_THUMBS 3 + { + "thumbs", + "Load Thumbnail", + "Load the image as thumbnail.", + SANE_TYPE_BOOL, + SANE_UNIT_NONE, + sizeof (SANE_Word), + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT, + SANE_CONSTRAINT_NONE, + {NULL} + } + , +#define DC210_OPT_SNAP 4 + { + "snap", + "Snap new picture", + "Take new picture and download it", + SANE_TYPE_BOOL, + SANE_UNIT_NONE, + sizeof (SANE_Word), + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT /* | SANE_CAP_ADVANCED */ , + SANE_CONSTRAINT_NONE, + {NULL} + } + , +#define DC210_OPT_LOWRES 5 + { + "lowres", + "Low Resolution", + "Resolution of new pictures", + SANE_TYPE_BOOL, + SANE_UNIT_NONE, + sizeof (SANE_Word), + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_INACTIVE + /* | SANE_CAP_ADVANCED */ , + SANE_CONSTRAINT_NONE, + {NULL} + } + , + +#define DC210_OPT_ERASE 6 + { + "erase", + "Erase", + "Erase the picture after downloading", + SANE_TYPE_BOOL, + SANE_UNIT_NONE, + sizeof (SANE_Word), + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT, + SANE_CONSTRAINT_NONE, + {NULL} + } + , + +#define DC210_OPT_DEFAULT 7 + { + "default-enhancements", + "Defaults", + "Set default values for enhancement controls.", + SANE_TYPE_BUTTON, + SANE_UNIT_NONE, + 0, + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT, + SANE_CONSTRAINT_NONE, + {NULL} + } + , +#define DC210_OPT_INIT_DC210 8 + { + "camera-init", + "Re-establish Communications", + "Re-establish communications with camera (in case of timeout, etc.)", + SANE_TYPE_BUTTON, + SANE_UNIT_NONE, + 0, + SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT, + SANE_CONSTRAINT_NONE, + {NULL} + } +}; + +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. */ +}; + + + + +static unsigned char shoot_pck[] = SHOOT_PCK; +static unsigned char init_pck[] = INIT_PCK; +static unsigned char thumb_pck[] = THUMBS_PCK; +static unsigned char pic_pck[] = PICS_PCK; +static unsigned char pic_info_pck[] = PICS_INFO_PCK; +static unsigned char info_pck[] = INFO_PCK; +static unsigned char erase_pck[] = ERASE_PCK; +static unsigned char res_pck[] = RES_PCK; + +static struct pkt_speed speeds[] = SPEEDS; +static struct termios tty_orig; + +#include <sys/time.h> +#include <unistd.h> + +static int +send_pck (int fd, unsigned char *pck) +{ + int n; + unsigned char r = 0xf0; /* prime the loop with a "camera busy" */ + + /* keep trying if camera says it's busy */ + while (r == 0xf0) + { + /* + * Not quite sure why we need this, but the program works a whole + * lot better (at least on the DC210) with this short delay. + */ + + if (write (fd, (char *) pck, 8) != 8) + { + DBG (2, "send_pck: error: write returned -1\n"); + return -1; + } + /* need to wait before we read command result */ + usleep (cmdrespause); + + if ((n = read (fd, (char *) &r, 1)) != 1) + { + DBG (2, "send_pck: error: read returned -1\n"); + return -1; + } + } + return (r == 0xd1) ? 0 : -1; +} + +static int +init_dc210 (DC210 * camera) +{ + struct termios tty_new; + int speed_index; + + for (speed_index = 0; speed_index < NELEMS (speeds); speed_index++) + { + if (speeds[speed_index].baud == camera->baud) + { + init_pck[2] = speeds[speed_index].pkt_code[0]; + init_pck[3] = speeds[speed_index].pkt_code[1]; + break; + } + } + + if (init_pck[2] == 0) + { + DBG (2, "unsupported baud rate.\n"); + return -1; + } + + /* + Open device file. + */ + if ((camera->fd = open (camera->tty_name, O_RDWR)) == -1) + { + DBG (2, "init_dc210: error: could not open %s for read/write\n", + camera->tty_name); + return -1; + } + /* + Save old device information to restore when we are done. + */ + if (tcgetattr (camera->fd, &tty_orig) == -1) + { + DBG (2, "init_dc210: error: could not get attributes\n"); + return -1; + } + + memcpy ((char *) &tty_new, (char *) &tty_orig, sizeof (struct termios)); + /* + We need the device to be raw. 8 bits even parity on 9600 baud to start. + */ +#ifdef HAVE_CFMAKERAW + cfmakeraw (&tty_new); +#else + /* Modified to set the port REALLY as required. Code inspired by + the gPhoto2 serial port setup */ + + /* input control settings */ + tty_new.c_iflag &= ~(IGNBRK | IGNCR | INLCR | ICRNL | IUCLC | + IXANY | IXON | IXOFF | INPCK | ISTRIP); + tty_new.c_iflag |= (BRKINT | IGNPAR); + /* output control settings */ + tty_new.c_oflag &= ~OPOST; + /* hardware control settings */ + tty_new.c_cflag = (tty_new.c_cflag & ~CSIZE) | CS8; + tty_new.c_cflag &= ~(PARENB | PARODD | CSTOPB); +# if defined(__sgi) + tty_new.c_cflag &= ~CNEW_RTSCTS; +# else +/* OS/2 doesn't have CRTSCTS - will this work for them? */ +# ifdef CRTSCTS + tty_new.c_cflag &= ~CRTSCTS; +# endif +# endif + tty_new.c_cflag |= CLOCAL | CREAD; +#endif + /* line discipline settings */ + tty_new.c_lflag &= ~(ICANON | ISIG | ECHO | ECHONL | ECHOE | + ECHOK | IEXTEN); + tty_new.c_cc[VMIN] = 0; + tty_new.c_cc[VTIME] = 5; + cfsetospeed (&tty_new, B9600); + cfsetispeed (&tty_new, B9600); + + if (tcsetattr (camera->fd, TCSANOW, &tty_new) == -1) + { + DBG (2, "init_dc210: error: could not set attributes\n"); + return -1; + } + + /* send a break to get it back to a known state */ + /* Used to supply a non-zero argument to tcsendbreak(), TCSBRK, + * and TCSBRKP, but that is system dependent. e.g. on irix a non-zero + * value does a drain instead of a break. A zero value is universally + * used to send a break. + */ + +#ifdef HAVE_TCSENDBREAK + tcsendbreak (camera->fd, 0); +# if defined(__sgi) + tcdrain (camera->fd); +# endif +# elif defined(TCSBRKP) + ioctl (camera->fd, TCSBRKP, 0); +# elif defined(TCSBRK) + ioctl (camera->fd, TCSBRK, 0); +#endif + + /* and wait for it to recover from the break */ + +#ifdef HAVE_USLEEP + usleep (breakpause); +#else + sleep (1); +#endif + + if (send_pck (camera->fd, init_pck) == -1) + { + /* + * The camera always powers up at 9600, so we try + * that first. However, it may be already set to + * a different speed. Try the entries in the table: + */ + + for (speed_index = NELEMS (speeds) - 1; speed_index > 0; speed_index--) + { + int x; + DBG (3, "init_dc210: changing speed to %d\n", + (int) speeds[speed_index].baud); + + cfsetospeed (&tty_new, speeds[speed_index].baud); + cfsetispeed (&tty_new, speeds[speed_index].baud); + + if (tcsetattr (camera->fd, TCSANOW, &tty_new) == -1) + { + DBG (2, "init_dc210: error: could not set attributes\n"); + return -1; + } + for (x = 0; x < 3; x++) + if (send_pck (camera->fd, init_pck) != -1) + break; + } + + if (speed_index == 0) + { + tcsetattr (camera->fd, TCSANOW, &tty_orig); + DBG (2, "init_dc210: error: no suitable baud rate\n"); + return -1; + } + } + /* + Set speed to requested speed. + */ + cfsetospeed (&tty_new, Camera.baud); + cfsetispeed (&tty_new, Camera.baud); + + if (tcsetattr (camera->fd, TCSANOW, &tty_new) == -1) + { + DBG (2, "init_dc210: error: could not set attributes\n"); + return -1; + } + + return camera->fd; +} + +static void +close_dc210 (int fd) +{ + /* + * Put the camera back to 9600 baud + */ + + if (close (fd) == -1) + { + DBG (4, "close_dc210: error: could not close device\n"); + } +} + +int +get_info (DC210 * camera) +{ + + char f[] = "get_info"; + unsigned char buf[256]; + + if (send_pck (camera->fd, info_pck) == -1) + { + DBG (2, "%s: error: send_pck returned -1\n", f); + return -1; + } + + DBG (9, "%s: read info packet\n", f); + + if (read_data (camera->fd, buf, 256) == -1) + { + DBG (2, "%s: error: read_data returned -1\n", f); + return -1; + } + + if (end_of_data (camera->fd) == -1) + { + DBG (2, "%s: error: end_of_data returned -1\n", f); + return -1; + } + + camera->model = buf[1]; + camera->ver_major = buf[2]; + camera->ver_minor = buf[3]; + camera->pic_taken = buf[56] << 8 | buf[57]; + camera->pic_left = buf[72] << 8 | buf[73]; + camera->flags.low_res = buf[22]; + camera->flags.low_batt = buf[8]; + + return 0; +} + +static int +read_data (int fd, unsigned char *buf, int sz) +{ + unsigned char ccsum; + unsigned char rcsum; + unsigned char c; + int n; + int r = 0; + int i; + +/* read the control byte */ + if (read (fd, &c, 1) != 1) + { + DBG (2, + "read_data: error: read for packet control byte returned bad status\n"); + return -1; + } + if (c != 1) + { + DBG (2, "read_data: error: incorrect packet control byte: %02x\n", c); + return -1; + } + for (n = 0; n < sz && (r = read (fd, (char *) &buf[n], sz - n)) > 0; n += r) + ; + + if (r <= 0) + { + DBG (2, "read_data: error: read returned -1\n"); + return -1; + } + + if (n < sz || read (fd, &rcsum, 1) != 1) + { + DBG (2, "read_data: error: buffer underrun or no checksum\n"); + return -1; + } + + for (i = 0, ccsum = 0; i < n; i++) + ccsum ^= buf[i]; + + if (ccsum != rcsum) + { + DBG (2, "read_data: error: bad checksum (%02x !=%02x)\n", rcsum, ccsum); + return -1; + } + + c = 0xd2; + + if (write (fd, (char *) &c, 1) != 1) + { + DBG (2, "read_data: error: write ack\n"); + return -1; + } + + return 0; +} + +static int +end_of_data (int fd) +{ + unsigned char c; + + do + { /* loop until the camera isn't busy */ + if (read (fd, &c, 1) != 1) + { + DBG (2, "end_of_data: error: read returned -1\n"); + return -1; + } + if (c == 0) /* got successful end of data */ + return 0; /* return success */ + sleep (1); /* not too fast */ + } + while (c == 0xf0); + + /* Accck! Not busy, but not a good end of data either */ + if (c != 0) + { + DBG (2, "end_of_data: error: bad EOD from camera (%02x)\n", + (unsigned) c); + return -1; + } + return 0; /* should never get here but shut gcc -Wall up */ +} + +static int +erase (int fd) +{ + if (send_pck (fd, erase_pck) == -1) + { + DBG (3, "erase: error: send_pck returned -1\n"); + return -1; + } + + if (end_of_data (fd) == -1) + { + DBG (3, "erase: error: end_of_data returned -1\n"); + return -1; + } + + return 0; +} + +static int +change_res (int fd, unsigned char res) +{ + char f[] = "change_res"; + + DBG (127, "%s called\n", f); + if (res != 0 && res != 1) + { + DBG (3, "%s: error: unsupported resolution\n", f); + return -1; + } + + /* cameras resolution semantics are opposite of ours */ + res = !res; + DBG (127, "%s: setting res to %d\n", f, res); + res_pck[2] = res; + + if (send_pck (fd, res_pck) == -1) + { + DBG (4, "%s: error: send_pck returned -1\n", f); + } + + if (end_of_data (fd) == -1) + { + DBG (4, "%s: error: end_of_data returned -1\n", f); + } + return 0; +} + +SANE_Status +sane_init (SANE_Int * version_code, SANE_Auth_Callback __sane_unused__ authorize) +{ + + char f[] = "sane_init"; + char dev_name[PATH_MAX], *p; + size_t len; + FILE *fp; + int baud; + + DBG_INIT (); + + if (version_code) + *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, 0); + + fp = sanei_config_open (DC210_CONFIG_FILE); + + /* defaults */ + Camera.baud = DEFAULT_BAUD_RATE; + Camera.tty_name = DEFAULT_TTY; + + if (!fp) + { + /* default to /dev/whatever instead of insisting on config file */ + DBG (1, "%s: missing config file '%s'\n", f, DC210_CONFIG_FILE); + } + else + { + while (sanei_config_read (dev_name, sizeof (dev_name), fp)) + { + dev_name[sizeof (dev_name) - 1] = '\0'; + DBG (20, "%s: config- %s\n", f, dev_name); + + if (dev_name[0] == '#') + continue; /* ignore line comments */ + len = strlen (dev_name); + if (!len) + continue; /* ignore empty lines */ + if (strncmp (dev_name, "port=", 5) == 0) + { + p = strchr (dev_name, '/'); + if (p) + Camera.tty_name = strdup (p); + DBG (20, "Config file port=%s\n", Camera.tty_name); + } + else if (strncmp (dev_name, "baud=", 5) == 0) + { + baud = atoi (&dev_name[5]); + switch (baud) + { + case 9600: + Camera.baud = B9600; + break; + case 19200: + Camera.baud = B19200; + break; + case 38400: + Camera.baud = B38400; + break; +#ifdef B57600 + case 57600: + Camera.baud = B57600; + break; +#endif +#ifdef B115200 + case 115200: + Camera.baud = B115200; + break; +#endif + } + DBG (20, "Config file baud=%d\n", Camera.baud); + } + else if (strcmp (dev_name, "dumpinquiry") == 0) + { + dumpinquiry = SANE_TRUE; + } + else if (strncmp (dev_name, "cmdrespause=", 12) == 0) + { + cmdrespause = atoi (&dev_name[12]); + DBG (20, "Config file cmdrespause=%lu\n", cmdrespause); + } + else if (strncmp (dev_name, "breakpause=", 11) == 0) + { + breakpause = atoi (&dev_name[11]); + DBG (20, "Config file breakpause=%lu\n", breakpause); + } + } + fclose (fp); + } + + if (init_dc210 (&Camera) == -1) + return SANE_STATUS_INVAL; + + if (get_info (&Camera) == -1) + { + DBG (2, "error: could not get info\n"); + close_dc210 (Camera.fd); + return SANE_STATUS_INVAL; + } + if (Camera.pic_taken == 0) + { + sod[DC210_OPT_IMAGE_NUMBER].cap |= SANE_CAP_INACTIVE; + image_range.min = 0; + image_range.max = 0; + } + else + { + sod[DC210_OPT_IMAGE_NUMBER].cap &= ~SANE_CAP_INACTIVE; + image_range.min = 1; + image_range.max = Camera.pic_taken; + } + + + /* load the current images array */ + Camera.Pictures = get_pictures_info (); + + if (Camera.pic_taken == 0) + { + Camera.current_picture_number = 0; + parms.bytes_per_line = 0; + parms.pixels_per_line = 0; + parms.lines = 0; + } + else + { + Camera.current_picture_number = 1; + if (Camera.Pictures[Camera.current_picture_number - 1].low_res) + { + parms.bytes_per_line = 640 * 3; + parms.pixels_per_line = 640; + parms.lines = 480; + } + else + { + parms.bytes_per_line = 1152 * 3; + parms.pixels_per_line = 1152; + parms.lines = 864; + } + } + + if (dumpinquiry) + { + DBG (0, "\nCamera information:\n~~~~~~~~~~~~~~~~~\n\n"); + DBG (0, "Model...........: DC%x\n", Camera.model); + DBG (0, "Firmware version: %d.%d\n", Camera.ver_major, + Camera.ver_minor); + DBG (0, "Pictures........: %d/%d\n", Camera.pic_taken, + Camera.pic_taken + Camera.pic_left); + DBG (0, "Resolution......: %s\n", + Camera.flags.low_res ? "low" : "high"); + DBG (0, "Battery state...: %s\n", + Camera.flags.low_batt ? "low" : "good"); + } + + return SANE_STATUS_GOOD; +} + +void +sane_exit (void) +{ +} + +/* Device select/open/close */ + +static const SANE_Device dev[] = { + { + "0", + "Kodak", + "DC-210", + "still camera"}, +}; + +SANE_Status +sane_get_devices (const SANE_Device *** device_list, + SANE_Bool __sane_unused__ local_only) +{ + static const SANE_Device *devlist[] = { + dev + 0, 0 + }; + + DBG (127, "sane_get_devices called\n"); + + *device_list = devlist; + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_open (SANE_String_Const devicename, SANE_Handle * handle) +{ + int i; + + DBG (127, "sane_open for device %s\n", 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; + } + + is_open = 1; + *handle = MAGIC; + + DBG (3, "sane_open: pictures taken=%d\n", Camera.pic_taken); + + return SANE_STATUS_GOOD; +} + +void +sane_close (SANE_Handle handle) +{ + DBG (127, "sane_close called\n"); + if (handle == MAGIC) + is_open = 0; + + DBG (127, "sane_close returning\n"); +} + +const SANE_Option_Descriptor * +sane_get_option_descriptor (SANE_Handle handle, SANE_Int option) +{ + if (handle != MAGIC || !is_open) + return NULL; /* wrong device */ + if (option < 0 || option >= NELEMS (sod)) + return NULL; + return &sod[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; + + DBG (127, "control_option(handle=%p,opt=%s,act=%s,val=%p,info=%p)\n", + handle, sod[option].title, + (action == + SANE_ACTION_SET_VALUE ? "SET" : (action == + SANE_ACTION_GET_VALUE ? "GET" : + "SETAUTO")), value, (void *)info); + + if (handle != MAGIC || !is_open) + return SANE_STATUS_INVAL; /* Unknown handle ... */ + + if (option < 0 || option >= NELEMS (sod)) + return SANE_STATUS_INVAL; /* Unknown option ... */ + + switch (action) + { + case SANE_ACTION_SET_VALUE: + status = sanei_constrain_value (sod + option, value, &myinfo); + if (status != SANE_STATUS_GOOD) + { + DBG (1, "Constraint error in control_option\n"); + return status; + } + + switch (option) + { + case DC210_OPT_IMAGE_NUMBER: + Camera.current_picture_number = *(SANE_Word *) value; + myinfo |= SANE_INFO_RELOAD_PARAMS; + /* get the image's resolution */ + + if (Camera.Pictures[Camera.current_picture_number - 1].low_res) + { + parms.bytes_per_line = 640 * 3; + parms.pixels_per_line = 640; + parms.lines = 480; + } + else + { + parms.bytes_per_line = 1152 * 3; + parms.pixels_per_line = 1152; + parms.lines = 864; + } + break; + + case DC210_OPT_THUMBS: + dc210_opt_thumbnails = !!*(SANE_Word *) value; + myinfo |= SANE_INFO_RELOAD_PARAMS; + + if (dc210_opt_thumbnails) + { + /* + * DC210 thumbnail are 96x72x8x3 + */ + parms.bytes_per_line = 96 * 3; + parms.pixels_per_line = 96; + parms.lines = 72; + } + else + { + if (Camera.Pictures[Camera.current_picture_number - 1].low_res) + { + parms.bytes_per_line = 640 * 3; + parms.pixels_per_line = 640; + parms.lines = 480; + } + else + { + parms.bytes_per_line = 1152 * 3; + parms.pixels_per_line = 1152; + parms.lines = 864; + } + } + break; + + case DC210_OPT_SNAP: + dc210_opt_snap = !!*(SANE_Word *) value; + myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS; + /* if we are snapping a new one */ + if (dc210_opt_snap) + { + /* activate the resolution setting */ + sod[DC210_OPT_LOWRES].cap &= ~SANE_CAP_INACTIVE; + /* and de-activate the image number selector */ + sod[DC210_OPT_IMAGE_NUMBER].cap |= SANE_CAP_INACTIVE; + } + else + { + /* deactivate the resolution setting */ + sod[DC210_OPT_LOWRES].cap |= SANE_CAP_INACTIVE; + /* and activate the image number selector */ + sod[DC210_OPT_IMAGE_NUMBER].cap &= ~SANE_CAP_INACTIVE; + } + /* set params according to resolution settings */ + if (dc210_opt_lowres) + { + parms.bytes_per_line = 640 * 3; + parms.pixels_per_line = 640; + parms.lines = 480; + } + else + { + parms.bytes_per_line = 1152 * 3; + parms.pixels_per_line = 1152; + parms.lines = 864; + } + break; + + case DC210_OPT_LOWRES: + dc210_opt_lowres = !!*(SANE_Word *) value; + myinfo |= SANE_INFO_RELOAD_PARAMS; + + if (!dc210_opt_thumbnails) + { + +/* XXX - change the number of pictures left depending on resolution + perhaps just call get_info again? + */ + if (dc210_opt_lowres) + { + parms.bytes_per_line = 640 * 3; + parms.pixels_per_line = 640; + parms.lines = 480; + } + else + { + parms.bytes_per_line = 1152 * 3; + parms.pixels_per_line = 1152; + parms.lines = 864; + } + + } + break; + + case DC210_OPT_ERASE: + dc210_opt_erase = !!*(SANE_Word *) value; + break; + + case DC210_OPT_DEFAULT: + DBG (1, "Fixme: Set all defaults here!\n"); + break; + case DC210_OPT_INIT_DC210: + if ((Camera.fd = init_dc210 (&Camera)) == -1) + { + return SANE_STATUS_INVAL; + } + break; + + default: + return SANE_STATUS_INVAL; + } + break; + + case SANE_ACTION_GET_VALUE: + switch (option) + { + case 0: + *(SANE_Word *) value = NELEMS (sod); + break; + + case DC210_OPT_IMAGE_NUMBER: + *(SANE_Word *) value = Camera.current_picture_number; + break; + + case DC210_OPT_THUMBS: + *(SANE_Word *) value = dc210_opt_thumbnails; + break; + + case DC210_OPT_SNAP: + *(SANE_Word *) value = dc210_opt_snap; + break; + + case DC210_OPT_LOWRES: + *(SANE_Word *) value = dc210_opt_lowres; + break; + + case DC210_OPT_ERASE: + *(SANE_Word *) value = dc210_opt_erase; + break; + + default: + return SANE_STATUS_INVAL; + } + break; + + case SANE_ACTION_SET_AUTO: + switch (option) + { + default: + 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; + + DBG (127, "sane_get_params called\n"); + + if (handle != MAGIC || !is_open) + rc = SANE_STATUS_INVAL; /* Unknown handle ... */ + + parms.last_frame = SANE_TRUE; /* Have no idea what this does */ + *params = parms; + DBG (127, "sane_get_params return %d\n", rc); + return rc; +} + +typedef struct +{ + struct jpeg_source_mgr pub; + JOCTET *buffer; +} +my_source_mgr; +typedef my_source_mgr *my_src_ptr; + +METHODDEF (void) +sanei_jpeg_init_source (j_decompress_ptr __sane_unused__ cinfo) +{ + /* nothing to do */ +} + +METHODDEF (boolean) sanei_jpeg_fill_input_buffer (j_decompress_ptr cinfo) +{ + + my_src_ptr src = (my_src_ptr) cinfo->src; + + if (read_data (Camera.fd, src->buffer, 1024) == -1) + { + DBG (5, "sane_start: read_data failed\n"); + src->buffer[0] = (JOCTET) 0xFF; + src->buffer[1] = (JOCTET) JPEG_EOI; + return FALSE; + } + src->pub.next_input_byte = src->buffer; + src->pub.bytes_in_buffer = 1024; + + return TRUE; +} + +METHODDEF (void) +sanei_jpeg_skip_input_data (j_decompress_ptr cinfo, long num_bytes) +{ + + my_src_ptr src = (my_src_ptr) cinfo->src; + + if (num_bytes > 0) + { + while (num_bytes > (long) src->pub.bytes_in_buffer) + { + num_bytes -= (long) src->pub.bytes_in_buffer; + (void) sanei_jpeg_fill_input_buffer (cinfo); + } + } + src->pub.next_input_byte += (size_t) num_bytes; + src->pub.bytes_in_buffer -= (size_t) num_bytes; +} + +METHODDEF (void) +sanei_jpeg_term_source (j_decompress_ptr __sane_unused__ cinfo) +{ + /* no work necessary here */ +} + +SANE_Status +sane_start (SANE_Handle handle) +{ + + DBG (127, "sane_start called\n"); + if (handle != MAGIC || !is_open || + (Camera.current_picture_number == 0 && dc210_opt_snap == SANE_FALSE)) + return SANE_STATUS_INVAL; /* Unknown handle ... */ + + if (Camera.scanning) + return SANE_STATUS_EOF; + + if (dc210_opt_snap) + { + + /* + * Don't allow picture unless there is room in the + * camera. + */ + if (Camera.pic_left == 0) + { + DBG (3, "No room to store new picture\n"); + return SANE_STATUS_INVAL; + } + + + if (snap_pic (Camera.fd) != SANE_STATUS_GOOD) + { + DBG (1, "Failed to snap new picture\n"); + return SANE_STATUS_INVAL; + } + } + + if (dc210_opt_thumbnails) + { + + thumb_pck[3] = (unsigned char) Camera.current_picture_number - 1; + thumb_pck[4] = 1; + + if (send_pck (Camera.fd, thumb_pck) == -1) + { + DBG (4, "sane_start: error: send_pck returned -1\n"); + return SANE_STATUS_INVAL; + } + + parms.bytes_per_line = 96 * 3; + parms.pixels_per_line = 96; + parms.lines = 72; + + bytes_in_buffer = 0; + bytes_read_from_buffer = 0; + + } + else + { + my_src_ptr src; + + struct jpeg_error_mgr jerr; + int row_stride; + + pic_pck[3] = (unsigned char) Camera.current_picture_number - 1; + + if (send_pck (Camera.fd, pic_pck) == -1) + { + DBG (4, "sane_start: error: send_pck returned -1\n"); + return SANE_STATUS_INVAL; + } + cinfo.err = jpeg_std_error (&jerr); + jpeg_create_decompress (&cinfo); + + cinfo.src = (struct jpeg_source_mgr *) (*cinfo.mem->alloc_small) ((j_common_ptr) & cinfo, JPOOL_PERMANENT, sizeof (my_source_mgr)); + src = (my_src_ptr) cinfo.src; + + src->buffer = (JOCTET *) (*cinfo.mem->alloc_small) ((j_common_ptr) & + cinfo, + JPOOL_PERMANENT, + 1024 * + sizeof (JOCTET)); + src->pub.init_source = sanei_jpeg_init_source; + src->pub.fill_input_buffer = sanei_jpeg_fill_input_buffer; + src->pub.skip_input_data = sanei_jpeg_skip_input_data; + src->pub.resync_to_restart = jpeg_resync_to_restart; /* default */ + src->pub.term_source = sanei_jpeg_term_source; + src->pub.bytes_in_buffer = 0; + src->pub.next_input_byte = NULL; + + (void) jpeg_read_header (&cinfo, TRUE); + dest_mgr = sanei_jpeg_jinit_write_ppm (&cinfo); + (void) jpeg_start_decompress (&cinfo); + row_stride = cinfo.output_width * cinfo.output_components; + + } + + Camera.scanning = SANE_TRUE; /* don't overlap scan requests */ + total_bytes_read = 0; + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_read (SANE_Handle __sane_unused__ handle, SANE_Byte * data, + SANE_Int max_length, SANE_Int * length) +{ + + static char buffer[1024]; + + if (dc210_opt_thumbnails) + { + if (total_bytes_read == THUMBSIZE) + { + if (dc210_opt_erase) + { + if (erase (Camera.fd) == -1) + { + DBG (1, "Failed to erase memory\n"); + return SANE_STATUS_INVAL; + } + Camera.pic_taken--; + Camera.pic_left++; + Camera.current_picture_number = Camera.pic_taken; + image_range.max--; + } + return SANE_STATUS_EOF; + } + + *length = 0; + if (!(bytes_in_buffer - bytes_read_from_buffer)) + { + if (read_data (Camera.fd, (unsigned char *) buffer, 1024) == -1) + { + DBG (5, "sane_read: read_data failed\n"); + return SANE_STATUS_INVAL; + } + bytes_in_buffer = 1024; + bytes_read_from_buffer = 0; + } + + while (bytes_read_from_buffer < bytes_in_buffer && + max_length && total_bytes_read < THUMBSIZE) + { + *data++ = buffer[bytes_read_from_buffer++]; + (*length)++; + max_length--; + total_bytes_read++; + } + + if (total_bytes_read == THUMBSIZE) + { + if (end_of_data (Camera.fd) == -1) + { + DBG (4, "sane_read: end_of_data error\n"); + return SANE_STATUS_INVAL; + } + else + { + return SANE_STATUS_GOOD; + } + } + else + { + return SANE_STATUS_GOOD; + } + } + else + { + int lines = 0; + + if (cinfo.output_scanline >= cinfo.output_height) + { + /* clean up comms with the camera */ + if (end_of_data (Camera.fd) == -1) + { + DBG (2, "sane_read: error: end_of_data returned -1\n"); + return SANE_STATUS_INVAL; + } + if (dc210_opt_erase) + { + DBG (127, "sane_read bp%d, erase image\n", __LINE__); + if (erase (Camera.fd) == -1) + { + DBG (1, "Failed to erase memory\n"); + return SANE_STATUS_INVAL; + } + Camera.pic_taken--; + Camera.pic_left++; + Camera.current_picture_number = Camera.pic_taken; + image_range.max--; + } + return SANE_STATUS_EOF; + } + +/* XXX - we should read more than 1 line at a time here */ + lines = 1; + (void) jpeg_read_scanlines (&cinfo, dest_mgr->buffer, lines); + (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, lines, (char *) data); + *length = cinfo.output_width * cinfo.output_components * lines; + + return SANE_STATUS_GOOD; + + } +} + +void +sane_cancel (SANE_Handle __sane_unused__ handle) +{ + DBG (127, "sane_cancel() called\n"); + if (Camera.scanning) + Camera.scanning = SANE_FALSE; /* done with scan */ + else + DBG (127, "sane_cancel() aborted, scanner not scanning\n"); +} + +SANE_Status +sane_set_io_mode (SANE_Handle __sane_unused__ handle, + SANE_Bool __sane_unused__ non_blocking) +{ + return SANE_STATUS_UNSUPPORTED; +} + +SANE_Status +sane_get_select_fd (SANE_Handle __sane_unused__ handle, SANE_Int __sane_unused__ * fd) +{ + return SANE_STATUS_UNSUPPORTED; +} + +static PictureInfo * +get_pictures_info (void) +{ + + char f[] = "get_pictures_info"; + unsigned int p; + PictureInfo *pics; + + if ((pics = (PictureInfo *) malloc (Camera.pic_taken * + sizeof (PictureInfo))) == NULL) + { + DBG (4, "%s: error: allocate memory for pictures array\n", f); + return NULL; + } + + for (p = 0; p < (unsigned int) Camera.pic_taken; p++) + { + if (get_picture_info (pics + p, p) == -1) + { + free (pics); + return NULL; + } + } + + return pics; +} + +static int +get_picture_info (PictureInfo * pic, int p) +{ + + char f[] = "get_picture_info"; + static char buffer[256]; + + DBG (4, "%s: info for pic #%d\n", f, p); + + pic_info_pck[3] = (unsigned char) p; + + if (send_pck (Camera.fd, pic_info_pck) == -1) + { + DBG (4, "%s: error: send_pck returned -1\n", f); + return -1; + } + + if (read_data (Camera.fd, (unsigned char *) buffer, 256) == -1) + { + DBG (2, "%s: error: read_data returned -1\n", f); + return -1; + } + + if (end_of_data (Camera.fd) == -1) + { + DBG (2, "%s: error: end_of_data returned -1\n", f); + return -1; + } + + if (buffer[3] == 0) + { + pic->low_res = SANE_TRUE; + } + else if (buffer[3] == 1) + { + pic->low_res = SANE_FALSE; + } + else + { + DBG (2, "%s: error: unknown resolution code %u\n", f, buffer[3]); + return -1; + } + pic->size = (buffer[8] & 0xFF) << 24; + pic->size |= (buffer[9] & 0xFF) << 16; + pic->size |= (buffer[10] & 0xFF) << 8; + pic->size |= (buffer[11] & 0xFF); + + return 0; +} + +static SANE_Status +snap_pic (int fd) +{ + + char f[] = "snap_pic"; + + /* make sure camera is set to our settings state */ + if (change_res (Camera.fd, dc210_opt_lowres) == -1) + { + DBG (1, "%s: Failed to set resolution\n", f); + return SANE_STATUS_INVAL; + } + + /* take the picture */ + if (send_pck (fd, shoot_pck) == -1) + { + DBG (4, "%s: error: send_pck returned -1\n", f); + return SANE_STATUS_INVAL; + } + else + { + if (end_of_data (Camera.fd) == -1) + { + DBG (2, "%s: error: end_of_data returned -1\n", f); + return SANE_STATUS_INVAL; + } + } + Camera.pic_taken++; + Camera.pic_left--; + Camera.current_picture_number = Camera.pic_taken; + image_range.max++; + sod[DC210_OPT_IMAGE_NUMBER].cap &= ~SANE_CAP_INACTIVE; + + /* add this one to the Pictures array */ + if ((Camera.Pictures = + (PictureInfo *) realloc (Camera.Pictures, + Camera.pic_taken * sizeof (PictureInfo))) == + NULL) + { + DBG (4, "%s: error: allocate memory for pictures array\n", f); + return SANE_STATUS_INVAL; + } + + if (get_picture_info (Camera.Pictures + Camera.pic_taken, + Camera.pic_taken) == -1) + { + DBG (1, "%s: Failed to get new picture info\n", f); + /* XXX - I guess we should try to erase the image here */ + return SANE_STATUS_INVAL; + } + + return SANE_STATUS_GOOD; +} |