diff options
Diffstat (limited to 'backend/canon630u-common.c')
| -rw-r--r-- | backend/canon630u-common.c | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/backend/canon630u-common.c b/backend/canon630u-common.c index a46424a..27c34ff 100644 --- a/backend/canon630u-common.c +++ b/backend/canon630u-common.c @@ -35,15 +35,15 @@ 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. + If you do not wish that, delete this exception notice. */ /* Communication, calibration, and scanning with the Canon CanoScan FB630U flatbed scanner under linux. - + Reworked into SANE-compatible format. - + The usb-parallel port interface chip is GL640usb, on the far side of which is an LM9830 parallel-port scanner-on-a-chip. @@ -153,7 +153,7 @@ gl640ReadReq (int fd, GL640_Request req, byte * data) } -/* Write USB bulk data +/* Write USB bulk data setup is an apparently scanner-specific sequence: {(0=read, 1=write), 0x00, 0x00, 0x00, sizelo, sizehi, 0x00, 0x00} hp3400: setup[1] = 0x01 @@ -177,7 +177,7 @@ gl640WriteBulk (int fd, byte * setup, byte * data, size_t size) } -/* Read USB bulk data +/* Read USB bulk data setup is an apparently scanner-specific sequence: {(0=read, 1=write), 0x00, 0x00, 0x00, sizelo, sizehi, 0x00, 0x00} fb630u: setup[2] = 0x80 @@ -461,7 +461,7 @@ typedef struct CANON_Handle #define FLG_GRAY 0x01 /* grayscale */ #define FLG_FORCE_CAL 0x02 /* force calibration */ #define FLG_BUF 0x04 /* save scan to buffer instead of file */ -#define FLG_NO_INTERLEAVE 0x08 /* don't interleave r,g,b pixels; leave them +#define FLG_NO_INTERLEAVE 0x08 /* don't interleave r,g,b pixels; leave them in row format */ #define FLG_PPM_HEADER 0x10 /* include PPM header in scan file */ } @@ -501,7 +501,7 @@ init (int fd) { byte result, rv; - if (gl640WriteReq (fd, GL640_GPIO_OE, 0x71) != SANE_STATUS_GOOD) { + if (gl640WriteReq (fd, GL640_GPIO_OE, 0x71) != SANE_STATUS_GOOD) { DBG(1, "Initial write request failed.\n"); return -1; } @@ -653,7 +653,7 @@ do_scan (CANON_Handle * s) fwrite (redptr + s->width, 1, 1, fp); /* Green */ fwrite (redptr + s->width + s->width, 1, 1, fp); /* Blue */ /* for PPM ascii (P3) - fprintf(fp, "%3d %3d %3d\n", *redptr, + fprintf(fp, "%3d %3d %3d\n", *redptr, *(redptr + s->width), *(redptr + s->width + s->width)); */ @@ -869,8 +869,8 @@ plugin_cal (CANON_Handle * s) write_word (fd, LAMP_B_OFF, 0x0100); /* coming in, we've got 300dpi, data px start : 0x004b - data px end : 0x1437 for a total of 5100(13ec) 600-dpi pixels, - (8.5 inches) or 2550 300-dpi pixels (7653 bytes). + data px end : 0x1437 for a total of 5100(13ec) 600-dpi pixels, + (8.5 inches) or 2550 300-dpi pixels (7653 bytes). Interestingly, the scan head never moves, no matter how many rows are read. */ s->width = 2551; @@ -981,7 +981,7 @@ plugin_cal (CANON_Handle * s) somewhat more complicated than necessary because I don't hard-code the strip widths; I try to figure out the regions based on the scan data. Theoretically, the region-finder should work for any number of distinct - regions (but there are only 2 on this scanner.) + regions (but there are only 2 on this scanner.) This produces the CAL_FILE_OGN file, the final offset/gain table. */ static SANE_Status compute_ogn (char *calfilename) @@ -1132,7 +1132,7 @@ compute_ogn (char *calfilename) continue; } - /* Gain multiplier: + /* Gain multiplier: 255 : 1.5 times brighter 511 : 2 times brighter 1023: 3 times brighter */ @@ -1146,9 +1146,9 @@ compute_ogn (char *calfilename) offset would be bad. */ /* Enhanced offset and gain calculation by M.Reinelt <reinelt@eunet.at> - * These expressions were found by an iterative calibration process, + * These expressions were found by an iterative calibration process, * by changing gain and offset values for every pixel until the desired - * values for black and white were reached, and finding an approximation + * values for black and white were reached, and finding an approximation * formula. * Note that offset is linear, but gain isn't! */ @@ -1256,8 +1256,8 @@ scan (CANON_Handle * opt) read_byte (fd, STATUS, &result); /* wants 2f or 2d */ if (!(result & STATUS_HOME) /*0x2d */ ) return SANE_STATUS_DEVICE_BUSY; - /* or force it to return? - write_byte(fd, COMMAND, 0x02); + /* or force it to return? + write_byte(fd, COMMAND, 0x02); wait_for_return(fd); */ @@ -1439,9 +1439,9 @@ CANON_set_scan_parameters (CANON_Handle * scan, const int left, const int top, const int right, - const int bottom, - const int res, - const int gain, + const int bottom, + const int res, + const int gain, const double gamma) { DBG (2, "CANON_set_scan_parameters:\n"); @@ -1593,12 +1593,12 @@ CANON_start_scan (CANON_Handle * scanner) return SANE_STATUS_IO_ERROR; } if ((rv == 1) - || !check_ogn_file () + || !check_ogn_file () || (scanner->flags & FLG_FORCE_CAL)) { plugin_cal (scanner); wait_for_return (scanner->fd); } - + /* scan */ if ((status = scan (scanner)) != SANE_STATUS_GOOD) { |