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Diffstat (limited to 'backend/pixma_mp750.c')
| -rw-r--r-- | backend/pixma_mp750.c | 970 |
1 files changed, 970 insertions, 0 deletions
diff --git a/backend/pixma_mp750.c b/backend/pixma_mp750.c new file mode 100644 index 0000000..ea35851 --- /dev/null +++ b/backend/pixma_mp750.c @@ -0,0 +1,970 @@ +/* SANE - Scanner Access Now Easy. + + Copyright (C) 2006-2007 Wittawat Yamwong <wittawat@web.de> + Copyright (C) 2011-2013 Rolf Bensch <rolf at bensch hyphen online dot de> + + 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. + */ + +/**************************************************************************** + * Credits should go to Martin Schewe (http://pixma.schewe.com) who analysed + * the protocol of MP750. + ****************************************************************************/ + +#include "../include/sane/config.h" + +#include <stdlib.h> +#include <string.h> + +#include "pixma_rename.h" +#include "pixma_common.h" +#include "pixma_io.h" + +/* TODO: remove lines marked with SIM. They are inserted so that I can test + the subdriver with the simulator. WY */ + +#ifdef __GNUC__ +# define UNUSED(v) (void) v +#else +# define UNUSED(v) +#endif + +#define IMAGE_BLOCK_SIZE 0xc000 +#define CMDBUF_SIZE 512 +#define HAS_PAPER(s) (s[1] == 0) +#define IS_WARMING_UP(s) (s[7] != 3) +#define IS_CALIBRATED(s) (s[8] == 0xf) + +#define MP750_PID 0x1706 +#define MP760_PID 0x1708 +#define MP780_PID 0x1707 + + +enum mp750_state_t +{ + state_idle, + state_warmup, + state_scanning, + state_transfering, + state_finished +}; + +enum mp750_cmd_t +{ + cmd_start_session = 0xdb20, + cmd_select_source = 0xdd20, + cmd_scan_param = 0xde20, + cmd_status = 0xf320, + cmd_abort_session = 0xef20, + cmd_time = 0xeb80, + cmd_read_image = 0xd420, + + cmd_activate = 0xcf60, + cmd_calibrate = 0xe920, + cmd_error_info = 0xff20 +}; + +typedef struct mp750_t +{ + enum mp750_state_t state; + pixma_cmdbuf_t cb; + unsigned raw_width, raw_height; + uint8_t current_status[12]; + + uint8_t *buf, *rawimg, *img; + /* make new buffer for rgb_to_gray to act on */ + uint8_t *imgcol; + unsigned line_size; /* need in 2 functions */ + + unsigned rawimg_left, imgbuf_len, last_block_size, imgbuf_ofs; + int shifted_bytes; + int stripe_shift; /* for 2400dpi */ + unsigned last_block; + + unsigned monochrome:1; + unsigned needs_abort:1; +} mp750_t; + + + +static void mp750_finish_scan (pixma_t * s); +static void check_status (pixma_t * s); + +static int +has_paper (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return HAS_PAPER (mp->current_status); +} + +static int +is_warming_up (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return IS_WARMING_UP (mp->current_status); +} + +static int +is_calibrated (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return IS_CALIBRATED (mp->current_status); +} + +static void +drain_bulk_in (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + while (pixma_read (s->io, mp->buf, IMAGE_BLOCK_SIZE) >= 0); +} + +static int +abort_session (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return pixma_exec_short_cmd (s, &mp->cb, cmd_abort_session); +} + +static int +query_status (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + uint8_t *data; + int error; + + data = pixma_newcmd (&mp->cb, cmd_status, 0, 12); + error = pixma_exec (s, &mp->cb); + if (error >= 0) + { + memcpy (mp->current_status, data, 12); + PDBG (pixma_dbg (3, "Current status: paper=%u cal=%u lamp=%u\n", + data[1], data[8], data[7])); + } + return error; +} + +static int +activate (pixma_t * s, uint8_t x) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + uint8_t *data = pixma_newcmd (&mp->cb, cmd_activate, 10, 0); + data[0] = 1; + data[3] = x; + return pixma_exec (s, &mp->cb); +} + +static int +activate_cs (pixma_t * s, uint8_t x) +{ + /*SIM*/ check_status (s); + return activate (s, x); +} + +static int +start_session (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return pixma_exec_short_cmd (s, &mp->cb, cmd_start_session); +} + +static int +select_source (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + uint8_t *data = pixma_newcmd (&mp->cb, cmd_select_source, 10, 0); + data[0] = (s->param->source == PIXMA_SOURCE_ADF) ? 2 : 1; + data[1] = 1; + return pixma_exec (s, &mp->cb); +} + +static int +has_ccd_sensor (pixma_t * s) +{ + return ((s->cfg->cap & PIXMA_CAP_CCD) != 0); +} + +static int +is_ccd_grayscale (pixma_t * s) +{ + return (has_ccd_sensor (s) && (s->param->channels == 1)); +} + +/* CCD sensors don't have a Grayscale mode, but use color mode instead */ +static unsigned +get_cis_ccd_line_size (pixma_t * s) +{ + return (s->param->wx ? s->param->line_size / s->param->w * s->param->wx + : s->param->line_size) * ((is_ccd_grayscale (s)) ? 3 : 1); +} + +static int +send_scan_param (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + uint8_t *data; + + data = pixma_newcmd (&mp->cb, cmd_scan_param, 0x2e, 0); + pixma_set_be16 (s->param->xdpi | 0x8000, data + 0x04); + pixma_set_be16 (s->param->ydpi | 0x8000, data + 0x06); + pixma_set_be32 (s->param->x, data + 0x08); + pixma_set_be32 (s->param->y, data + 0x0c); + pixma_set_be32 (mp->raw_width, data + 0x10); + pixma_set_be32 (mp->raw_height, data + 0x14); + data[0x18] = 8; /* 8 = color, 4 = grayscale(?) */ + /* GH: No, there is no grayscale for CCD devices, Windows shows same */ + data[0x19] = s->param->depth * ((is_ccd_grayscale (s)) ? 3 : s->param->channels); /* bits per pixel */ + data[0x20] = 0xff; + data[0x23] = 0x81; + data[0x26] = 0x02; + data[0x27] = 0x01; + data[0x29] = mp->monochrome ? 0 : 1; + + return pixma_exec (s, &mp->cb); +} + +static int +calibrate (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + return pixma_exec_short_cmd (s, &mp->cb, cmd_calibrate); +} + +static int +calibrate_cs (pixma_t * s) +{ + /*SIM*/ check_status (s); + return calibrate (s); +} + +static int +request_image_block_ex (pixma_t * s, unsigned *size, uint8_t * info, + unsigned flag) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + int error; + + memset (mp->cb.buf, 0, 10); + pixma_set_be16 (cmd_read_image, mp->cb.buf); + mp->cb.buf[7] = *size >> 8; + mp->cb.buf[8] = 4 | flag; + mp->cb.reslen = pixma_cmd_transaction (s, mp->cb.buf, 10, mp->cb.buf, 6); + mp->cb.expected_reslen = 0; + error = pixma_check_result (&mp->cb); + if (error >= 0) + { + if (mp->cb.reslen == 6) + { + *info = mp->cb.buf[2]; + *size = pixma_get_be16 (mp->cb.buf + 4); + } + else + { + error = PIXMA_EPROTO; + } + } + return error; +} + +static int +request_image_block (pixma_t * s, unsigned *size, uint8_t * info) +{ + return request_image_block_ex (s, size, info, 0); +} + +static int +request_image_block2 (pixma_t * s, uint8_t * info) +{ + unsigned temp = 0; + return request_image_block_ex (s, &temp, info, 0x20); +} + +static int +read_image_block (pixma_t * s, uint8_t * data) +{ + int count, temp; + + count = pixma_read (s->io, data, IMAGE_BLOCK_SIZE); + if (count < 0) + return count; + if (count == IMAGE_BLOCK_SIZE) + { + int error = pixma_read (s->io, &temp, 0); + if (error < 0) + { + PDBG (pixma_dbg + (1, "WARNING: reading zero-length packet failed %d\n", error)); + } + } + return count; +} + +static int +read_error_info (pixma_t * s, void *buf, unsigned size) +{ + unsigned len = 16; + mp750_t *mp = (mp750_t *) s->subdriver; + uint8_t *data; + int error; + + data = pixma_newcmd (&mp->cb, cmd_error_info, 0, len); + error = pixma_exec (s, &mp->cb); + if (error >= 0 && buf) + { + if (len < size) + size = len; + /* NOTE: I've absolutely no idea what the returned data mean. */ + memcpy (buf, data, size); + error = len; + } + return error; +} + +static int +send_time (pixma_t * s) +{ + /* TODO: implement send_time() */ + UNUSED (s); + PDBG (pixma_dbg (3, "send_time() is not yet implemented.\n")); + return 0; +} + +static int +handle_interrupt (pixma_t * s, int timeout) +{ + int error; + uint8_t intr[16]; + + error = pixma_wait_interrupt (s->io, intr, sizeof (intr), timeout); + if (error == PIXMA_ETIMEDOUT) + return 0; + if (error < 0) + return error; + if (error != 16) + { + PDBG (pixma_dbg (1, "WARNING: unexpected interrupt packet length %d\n", + error)); + return PIXMA_EPROTO; + } + + if (intr[10] & 0x40) + send_time (s); + if (intr[12] & 0x40) + query_status (s); + if (intr[15] & 1) + s->events = PIXMA_EV_BUTTON2; /* b/w scan */ + if (intr[15] & 2) + s->events = PIXMA_EV_BUTTON1; /* color scan */ + return 1; +} + +static void +check_status (pixma_t * s) +{ + while (handle_interrupt (s, 0) > 0); +} + +static int +step1 (pixma_t * s) +{ + int error, tmo; + + error = activate (s, 0); + if (error < 0) + return error; + error = query_status (s); + if (error < 0) + return error; + if (s->param->source == PIXMA_SOURCE_ADF && !has_paper (s)) + return PIXMA_ENO_PAPER; + error = activate_cs (s, 0); + /*SIM*/ if (error < 0) + return error; + error = activate_cs (s, 0x20); + if (error < 0) + return error; + + tmo = 60; + error = calibrate_cs (s); + while (error == PIXMA_EBUSY && --tmo >= 0) + { + if (s->cancel) + return PIXMA_ECANCELED; + PDBG (pixma_dbg + (2, "Scanner is busy. Timed out in %d sec.\n", tmo + 1)); + pixma_sleep (1000000); + error = calibrate_cs (s); + } + return error; +} + +static void +shift_rgb (const uint8_t * src, unsigned pixels, + int sr, int sg, int sb, int stripe_shift, + int line_size, uint8_t * dst) +{ + unsigned st; + + for (; pixels != 0; pixels--) + { + st = (pixels % 2 == 0) ? -2 * stripe_shift * line_size : 0; + *(dst++ + sr + st) = *src++; + *(dst++ + sg + st) = *src++; + *(dst++ + sb + st) = *src++; + } +} + +static uint8_t * +rgb_to_gray (uint8_t * gptr, const uint8_t * cptr, unsigned pixels, unsigned c) +{ + unsigned i, j, g; + + /* gptr: destination gray scale buffer */ + /* cptr: source color scale buffer */ + /* c: 3 for 3-channel single-byte data, 6 for double-byte data */ + + for (i=0; i < pixels; i++) + { + for (j = 0, g = 0; j < 3; j++) + { + g += *cptr++; + if (c == 6) g += (*cptr++ << 8); + } + g /= 3; + *gptr++ = g; + if (c == 6) *gptr++ = (g >> 8); + } + return gptr; +} + +static int +calc_component_shifting (pixma_t * s) +{ + switch (s->cfg->pid) + { + case MP760_PID: + switch (s->param->ydpi) + { + case 300: + return 3; + case 600: + return 6; + default: + return s->param->ydpi / 75; + } + /* never reached */ + break; + + case MP750_PID: + case MP780_PID: + default: + return 2 * s->param->ydpi / 75; + } +} + +static void +workaround_first_command (pixma_t * s) +{ + /* FIXME: Send a dummy command because the device doesn't response to the + first command that is sent directly after the USB interface has been + set up. Why? USB isn't set up properly? */ + uint8_t cmd[10]; + int error; + + if (s->cfg->pid == MP750_PID) + return; /* MP750 doesn't have this problem(?) */ + + PDBG (pixma_dbg + (1, + "Work-around for the problem: device doesn't response to the first command.\n")); + memset (cmd, 0, sizeof (cmd)); + pixma_set_be16 (cmd_calibrate, cmd); + error = pixma_write (s->io, cmd, 10); + if (error != 10) + { + if (error < 0) + { + PDBG (pixma_dbg + (1, " Sending a dummy command failed: %s\n", + pixma_strerror (error))); + } + else + { + PDBG (pixma_dbg + (1, " Sending a dummy command failed: count = %d\n", error)); + } + return; + } + error = pixma_read (s->io, cmd, sizeof (cmd)); + if (error >= 0) + { + PDBG (pixma_dbg + (1, " Got %d bytes response from a dummy command.\n", error)); + } + else + { + PDBG (pixma_dbg + (1, " Reading response of a dummy command failed: %s\n", + pixma_strerror (error))); + } +} + +static int +mp750_open (pixma_t * s) +{ + mp750_t *mp; + uint8_t *buf; + + mp = (mp750_t *) calloc (1, sizeof (*mp)); + if (!mp) + return PIXMA_ENOMEM; + + buf = (uint8_t *) malloc (CMDBUF_SIZE); + if (!buf) + { + free (mp); + return PIXMA_ENOMEM; + } + + s->subdriver = mp; + mp->state = state_idle; + + /* ofs: 0 1 2 3 4 5 6 7 8 9 + cmd: cmd1 cmd2 00 00 00 00 00 00 00 00 + data length-^^^^^ => cmd_len_field_ofs + |--------- cmd_header_len --------| + + res: res1 res2 + |---------| res_header_len + */ + mp->cb.buf = buf; + mp->cb.size = CMDBUF_SIZE; + mp->cb.res_header_len = 2; + mp->cb.cmd_header_len = 10; + mp->cb.cmd_len_field_ofs = 7; + + handle_interrupt (s, 200); + workaround_first_command (s); + return 0; +} + +static void +mp750_close (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + + mp750_finish_scan (s); + free (mp->cb.buf); + free (mp); + s->subdriver = NULL; +} + +static int +mp750_check_param (pixma_t * s, pixma_scan_param_t * sp) +{ + unsigned raw_width; + + UNUSED (s); + + sp->depth = 8; /* FIXME: Does MP750 supports other depth? */ + + /* GH: my implementation */ + /* if ((sp->channels == 3) || (is_ccd_grayscale (s))) + raw_width = ALIGN_SUP (sp->w, 4); + else + raw_width = ALIGN_SUP (sp->w, 12);*/ + + /* the above code gives segmentation fault?!? why... it seems to work in the mp750_scan function */ + raw_width = ALIGN_SUP (sp->w, 4); + + /*sp->line_size = raw_width * sp->channels;*/ + sp->line_size = raw_width * sp->channels * (sp->depth / 8); /* no cropping? */ + return 0; +} + +static int +mp750_scan (pixma_t * s) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + int error; + uint8_t *buf; + unsigned size, dpi, spare; + + dpi = s->param->ydpi; + /* add a stripe shift for 2400dpi */ + mp->stripe_shift = (dpi == 2400) ? 4 : 0; + + if (mp->state != state_idle) + return PIXMA_EBUSY; + + /* clear interrupt packets buffer */ + while (handle_interrupt (s, 0) > 0) + { + } + + /* if (s->param->channels == 1) + mp->raw_width = ALIGN_SUP (s->param->w, 12); + else + mp->raw_width = ALIGN_SUP (s->param->w, 4);*/ + + /* change to use CCD grayscale mode --- why does this give segmentation error at runtime in mp750_check_param? */ + if ((s->param->channels == 3) || (is_ccd_grayscale (s))) + mp->raw_width = ALIGN_SUP (s->param->w, 4); + else + mp->raw_width = ALIGN_SUP (s->param->w, 12); + /* not sure about MP750, but there is no need for aligning at 12 for the MP760/770, MP780/790 since always use CCD color mode */ + + /* modify for stripe shift */ + spare = 2 * calc_component_shifting (s) + 2 * mp->stripe_shift; /* FIXME: or maybe (2*... + 1)? */ + mp->raw_height = s->param->h + spare; + PDBG (pixma_dbg (3, "raw_width=%u raw_height=%u dpi=%u\n", + mp->raw_width, mp->raw_height, dpi)); + + /* PDBG (pixma_dbg (4, "line_size=%"PRIu64"\n",s->param->line_size)); */ + + mp->line_size = get_cis_ccd_line_size (s); /* scanner hardware line_size multiplied by 3 for CCD grayscale */ + + size = 8 + 2 * IMAGE_BLOCK_SIZE + spare * mp->line_size; + buf = (uint8_t *) malloc (size); + if (!buf) + return PIXMA_ENOMEM; + mp->buf = buf; + mp->rawimg = buf; + mp->imgbuf_ofs = spare * mp->line_size; + mp->imgcol = mp->rawimg + IMAGE_BLOCK_SIZE + 8; /* added to make rgb->gray */ + mp->img = mp->rawimg + IMAGE_BLOCK_SIZE + 8; + mp->imgbuf_len = IMAGE_BLOCK_SIZE + mp->imgbuf_ofs; + mp->rawimg_left = 0; + mp->last_block_size = 0; + mp->shifted_bytes = -(int) mp->imgbuf_ofs; + + error = step1 (s); + if (error >= 0) + error = start_session (s); + if (error >= 0) + mp->state = state_warmup; + if (error >= 0) + error = select_source (s); + if (error >= 0) + error = send_scan_param (s); + if (error < 0) + { + mp750_finish_scan (s); + return error; + } + return 0; +} + + +static int +mp750_fill_buffer (pixma_t * s, pixma_imagebuf_t * ib) +{ + mp750_t *mp = (mp750_t *) s->subdriver; + int error; + uint8_t info; + unsigned block_size, bytes_received, n; + int shift[3], base_shift; + int c; + + c = ((is_ccd_grayscale (s)) ? 3 : s->param->channels) * s->param->depth / 8; /* single-byte or double-byte data */ + + if (mp->state == state_warmup) + { + int tmo = 60; + + query_status (s); + check_status (s); + /*SIM*/ while (!is_calibrated (s) && --tmo >= 0) + { + if (s->cancel) + return PIXMA_ECANCELED; + if (handle_interrupt (s, 1000) > 0) + { + block_size = 0; + error = request_image_block (s, &block_size, &info); + /*SIM*/ if (error < 0) + return error; + } + } + if (tmo < 0) + { + PDBG (pixma_dbg (1, "WARNING: Timed out waiting for calibration\n")); + return PIXMA_ETIMEDOUT; + } + pixma_sleep (100000); + query_status (s); + if (is_warming_up (s) || !is_calibrated (s)) + { + PDBG (pixma_dbg (1, "WARNING: Wrong status: wup=%d cal=%d\n", + is_warming_up (s), is_calibrated (s))); + return PIXMA_EPROTO; + } + block_size = 0; + request_image_block (s, &block_size, &info); + /*SIM*/ mp->state = state_scanning; + mp->last_block = 0; + } + + /* TODO: Move to other place, values are constant. */ + base_shift = calc_component_shifting (s) * mp->line_size; + if (s->param->source == PIXMA_SOURCE_ADF) + { + shift[0] = 0; + shift[1] = -base_shift; + shift[2] = -2 * base_shift; + } + else + { + shift[0] = -2 * base_shift; + shift[1] = -base_shift; + shift[2] = 0; + } + + do + { + if (mp->last_block_size > 0) + { + block_size = mp->imgbuf_len - mp->last_block_size; + memcpy (mp->img, mp->img + mp->last_block_size, block_size); + } + + do + { + if (s->cancel) + return PIXMA_ECANCELED; + if (mp->last_block) + { + /* end of image */ + info = mp->last_block; + if (info != 0x38) + { + query_status (s); + /*SIM*/ while ((info & 0x28) != 0x28) + { + pixma_sleep (10000); + error = request_image_block2 (s, &info); + if (s->cancel) + return PIXMA_ECANCELED; /* FIXME: Is it safe to cancel here? */ + if (error < 0) + return error; + } + } + mp->needs_abort = (info != 0x38); + mp->last_block = info; + mp->state = state_finished; + return 0; + } + + check_status (s); + /*SIM*/ while (handle_interrupt (s, 1) > 0); + /*SIM*/ block_size = IMAGE_BLOCK_SIZE; + error = request_image_block (s, &block_size, &info); + if (error < 0) + { + if (error == PIXMA_ECANCELED) + read_error_info (s, NULL, 0); + return error; + } + mp->last_block = info; + if ((info & ~0x38) != 0) + { + PDBG (pixma_dbg (1, "WARNING: Unknown info byte %x\n", info)); + } + if (block_size == 0) + { + /* no image data at this moment. */ + pixma_sleep (10000); + } + } + while (block_size == 0); + + error = read_image_block (s, mp->rawimg + mp->rawimg_left); + if (error < 0) + { + mp->state = state_transfering; + return error; + } + bytes_received = error; + PASSERT (bytes_received == block_size); + + /* TODO: simplify! */ + mp->rawimg_left += bytes_received; + n = mp->rawimg_left / 3; + /* n = number of pixels in the buffer? */ + + /* Color to Grayscale converion for CCD sensor */ + if (is_ccd_grayscale (s)) { + shift_rgb (mp->rawimg, n, shift[0], shift[1], shift[2], mp->stripe_shift, mp->line_size, + mp->imgcol + mp->imgbuf_ofs); + /* dst: img, src: imgcol */ + rgb_to_gray (mp->img, mp->imgcol, n, c); /* cropping occurs later? */ + PDBG (pixma_dbg (4, "*fill_buffer: did grayscale conversion \n")); + } + /* Color image processing */ + else { + shift_rgb (mp->rawimg, n, shift[0], shift[1], shift[2], mp->stripe_shift, mp->line_size, + mp->img + mp->imgbuf_ofs); + PDBG (pixma_dbg (4, "*fill_buffer: no grayscale conversion---keep color \n")); + } + + /* entering remaining unprocessed bytes after last complete pixel into mp->rawimg buffer -- no influence on mp->img */ + n *= 3; + mp->shifted_bytes += n; + mp->rawimg_left -= n; /* rawimg_left = 0, 1 or 2 bytes left in the buffer. */ + mp->last_block_size = n; + memcpy (mp->rawimg, mp->rawimg + n, mp->rawimg_left); + + } + while (mp->shifted_bytes <= 0); + + if ((unsigned) mp->shifted_bytes < mp->last_block_size) + { + if (is_ccd_grayscale (s)) + ib->rptr = mp->img + mp->last_block_size/3 - mp->shifted_bytes/3; /* testing---works OK */ + else + ib->rptr = mp->img + mp->last_block_size - mp->shifted_bytes; + } + else + ib->rptr = mp->img; + if (is_ccd_grayscale (s)) + ib->rend = mp->img + mp->last_block_size/3; /* testing---works OK */ + else + ib->rend = mp->img + mp->last_block_size; + return ib->rend - ib->rptr; +} + +static void +mp750_finish_scan (pixma_t * s) +{ + int error; + mp750_t *mp = (mp750_t *) s->subdriver; + + switch (mp->state) + { + case state_transfering: + drain_bulk_in (s); + /* fall through */ + case state_scanning: + case state_warmup: + error = abort_session (s); + if (error == PIXMA_ECANCELED) + read_error_info (s, NULL, 0); + /* fall through */ + case state_finished: + if (s->param->source == PIXMA_SOURCE_FLATBED) + { + /*SIM*/ query_status (s); + if (abort_session (s) == PIXMA_ECANCELED) + { + read_error_info (s, NULL, 0); + query_status (s); + } + } + query_status (s); + /*SIM*/ activate (s, 0); + if (mp->needs_abort) + { + mp->needs_abort = 0; + abort_session (s); + } + free (mp->buf); + mp->buf = mp->rawimg = NULL; + mp->state = state_idle; + /* fall through */ + case state_idle: + break; + } +} + +static void +mp750_wait_event (pixma_t * s, int timeout) +{ + /* FIXME: timeout is not correct. See usbGetCompleteUrbNoIntr() for + * instance. */ + while (s->events == 0 && handle_interrupt (s, timeout) > 0) + { + } +} + +static int +mp750_get_status (pixma_t * s, pixma_device_status_t * status) +{ + int error; + + error = query_status (s); + if (error < 0) + return error; + status->hardware = PIXMA_HARDWARE_OK; + status->adf = (has_paper (s)) ? PIXMA_ADF_OK : PIXMA_ADF_NO_PAPER; + status->cal = + (is_calibrated (s)) ? PIXMA_CALIBRATION_OK : PIXMA_CALIBRATION_OFF; + status->lamp = (is_warming_up (s)) ? PIXMA_LAMP_WARMING_UP : PIXMA_LAMP_OK; + return 0; +} + + +static const pixma_scan_ops_t pixma_mp750_ops = { + mp750_open, + mp750_close, + mp750_scan, + mp750_fill_buffer, + mp750_finish_scan, + mp750_wait_event, + mp750_check_param, + mp750_get_status +}; + +#define DEVICE(name, model, pid, dpi, cap) { \ + name, /* name */ \ + model, /* model */ \ + 0x04a9, pid, /* vid pid */ \ + 0, /* iface */ \ + &pixma_mp750_ops, /* ops */ \ + dpi, 2*(dpi), /* xdpi, ydpi */ \ + 0, 0, /* adftpu_min_dpi & adftpu_max_dpi not used in this subdriver */ \ + 0, 0, /* tpuir_min_dpi & tpuir_max_dpi not used in this subdriver */ \ + 637, 877, /* width, height */ \ + PIXMA_CAP_GRAY|PIXMA_CAP_EVENTS|cap \ +} + +const pixma_config_t pixma_mp750_devices[] = { + DEVICE ("Canon PIXMA MP750", "MP750", MP750_PID, 2400, PIXMA_CAP_CCD | PIXMA_CAP_ADF), + DEVICE ("Canon PIXMA MP760/770", "MP760/770", MP760_PID, 2400, PIXMA_CAP_CCD | PIXMA_CAP_TPU), + DEVICE ("Canon PIXMA MP780/790", "MP780/790", MP780_PID, 2400, PIXMA_CAP_CCD | PIXMA_CAP_ADF), + DEVICE (NULL, NULL, 0, 0, 0) +}; |