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  • Committer: Bazaar Package Importer
  • Author(s): Robert Ancell
  • Date: 2011-02-14 14:28:56 UTC
  • mfrom: (1.2.2 upstream)
  • Revision ID: james.westby@ubuntu.com-20110214142856-6gxjetg88q9zctid
Tags: 1.0.22-0ubuntu1
* New upstream release
* debian/control:
  - Use standards version 3.9.1
* debian/patches/allow_dll.d_symlinks.patch:
* debian/patches/fix_epson2_cancel.patch:
* debian/patches/fix_epson2_commands.patch:
* debian/patches/fix_xerox_mfp_color_mode.patch:
* debian/patches/genesys_disable_raw_data_log.patch:
* debian/patches/no_translations.patch:
* debian/patches/saned_exit_avahi_process.patch:
* debian/patches/scsi_perfection_2450.patch:
* debian/patches/scsi_scanjet_4c.patch:
* debian/patches/xerox_mfp_new_ids.patch:
  - Applied upstream
* debian/watch:
  - Dropped, the URL is not consistent between releases

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Lines of Context:
backend/v4l.c
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SANE_Status
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sane_start (SANE_Handle handle)
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{
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  int len;
 
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  int len, loop;
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  V4L_Scanner *s;
 
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  char data;
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  DBG (2, "sane_start\n");
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  for (s = first_handle; s; s = s->next)
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      s->mmap.format = s->pict.palette;
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      DBG (2, "sane_start: mmapped frame %d x %d with palette %d\n",
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           s->mmap.width, s->mmap.height, s->mmap.format);
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      len = v4l1_ioctl (s->fd, VIDIOCMCAPTURE, &s->mmap);
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      if (len == -1)
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        {
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          DBG (1, "sane_start: ioctl VIDIOCMCAPTURE failed: %s\n",
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               strerror (errno));
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          return SANE_STATUS_INVAL;
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        }
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      DBG (3, "sane_start: waiting for frame %x\n", s->mmap.frame);
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      len = v4l1_ioctl (s->fd, VIDIOCSYNC, &(s->mmap.frame));
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      if (-1 == len)
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        {
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          DBG (1, "sane_start: call to ioctl(%d, VIDIOCSYNC, ..) failed\n",
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               s->fd);
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          return SANE_STATUS_INVAL;
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        }
 
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      /* We need to loop here to empty the read buffers, so we don't
 
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         get a stale image */
 
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      for (loop = 0; loop <= s->mbuf.frames; loop++)
 
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        {
 
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          len = v4l1_ioctl (s->fd, VIDIOCMCAPTURE, &s->mmap);
 
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          if (len == -1)
 
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            {
 
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              DBG (1, "sane_start: ioctl VIDIOCMCAPTURE failed: %s\n",
 
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                   strerror (errno));
 
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              return SANE_STATUS_INVAL;
 
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            }
 
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          DBG (3, "sane_start: waiting for frame %x, loop %d\n", s->mmap.frame, loop);
 
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          len = v4l1_ioctl (s->fd, VIDIOCSYNC, &(s->mmap.frame));
 
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          if (-1 == len)
 
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            {
 
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              DBG (1, "sane_start: call to ioctl(%d, VIDIOCSYNC, ..) failed\n",
 
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                   s->fd);
 
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              return SANE_STATUS_INVAL;
 
1028
            }
 
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        }
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      DBG (3, "sane_start: frame %x done\n", s->mmap.frame);
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    }
 
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  /* v4l1 actually returns BGR when we ask for RGB, so convert it */
 
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  if (s->pict.palette == VIDEO_PALETTE_RGB24)
 
1035
    {
 
1036
      DBG (3, "sane_start: converting from BGR to RGB\n");
 
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      for (loop = 0; loop < (s->window.width * s->window.height * 3); loop += 3)
 
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        {
 
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          data = *(buffer + loop);
 
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          *(buffer + loop) = *(buffer + loop + 2);
 
1041
          *(buffer + loop + 2) = data;
 
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        }
 
1043
    }
 
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  DBG (3, "sane_start: done\n");
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  return SANE_STATUS_GOOD;
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}