kopia lustrzana https://gitlab.com/sane-project/backends
Added threshold option for b&w.
Frank Zago
rodzic
1a62a5f0f0
commit
da6aa74692
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@ -48,7 +48,7 @@
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/*--------------------------------------------------------------------------*/
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#define BUILD 7 /* 2002/08/30 */
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#define BUILD 8 /* 2002/09/07 */
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#define BACKEND_NAME teco1
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#define TECO_CONFIG_FILE "teco1.conf"
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@ -140,6 +140,14 @@ static const int dither_val[] = {
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/*--------------------------------------------------------------------------*/
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static const SANE_Range threshold_range = {
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0, /* minimum */
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255, /* maximum */
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0 /* quantization */
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};
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/*--------------------------------------------------------------------------*/
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/* Define the supported scanners and their characteristics. */
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static const struct scanners_supported scanners[] = {
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{6, "TECO VM3510", /* *fake id*, see teco_identify_scanner */
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@ -877,18 +885,43 @@ teco_send_gamma (Teco_Scanner * dev)
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}
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else
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{
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/*
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* Shift is 1 for GAMMA_LENGTH == 256
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* and 4 for GAMMA_LENGTH == 1024
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*/
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int shift = GAMMA_LENGTH >> 8;
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for (i = 0; i < GAMMA_LENGTH; i++)
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if (dev->scan_mode == TECO_BW)
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{
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param.gamma[0 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[1 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[2 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[3 * GAMMA_LENGTH + i] = 0;
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int shift = GAMMA_LENGTH >> 8;
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/* Map threshold from a 0..255 scale to a
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* 0..GAMMA_LENGTH scale. */
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unsigned int threshold =
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dev->val[OPT_THRESHOLD].w * (GAMMA_LENGTH / 256);
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for (i = 0; i < GAMMA_LENGTH; i++)
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{
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param.gamma[0 * GAMMA_LENGTH + i] = 0;
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if (i < threshold)
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param.gamma[1 * GAMMA_LENGTH + i] = 0;
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else
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param.gamma[1 * GAMMA_LENGTH + i] = 255;
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param.gamma[2 * GAMMA_LENGTH + i] = 0;
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param.gamma[3 * GAMMA_LENGTH + i] = 0;
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}
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}
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else
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{
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/*
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* Shift is 1 for GAMMA_LENGTH == 256
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* and 4 for GAMMA_LENGTH == 1024
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*/
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int shift = GAMMA_LENGTH >> 8;
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for (i = 0; i < GAMMA_LENGTH; i++)
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{
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param.gamma[0 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[1 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[2 * GAMMA_LENGTH + i] = i / shift;
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param.gamma[3 * GAMMA_LENGTH + i] = 0;
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}
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}
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}
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@ -1167,6 +1200,18 @@ teco_init_options (Teco_Scanner * dev)
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dev->opt[OPT_GAMMA_VECTOR_GRAY].constraint.range = &gamma_range;
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dev->val[OPT_GAMMA_VECTOR_GRAY].wa = dev->gamma_GRAY;
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/* Threshold */
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dev->opt[OPT_THRESHOLD].name = SANE_NAME_THRESHOLD;
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dev->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD;
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dev->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD;
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dev->opt[OPT_THRESHOLD].type = SANE_TYPE_INT;
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dev->opt[OPT_THRESHOLD].unit = SANE_UNIT_NONE;
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dev->opt[OPT_THRESHOLD].size = sizeof (SANE_Int);
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dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
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dev->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
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dev->opt[OPT_THRESHOLD].constraint.range = &threshold_range;
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dev->val[OPT_THRESHOLD].w = 128;
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/* preview */
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dev->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
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dev->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
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@ -1624,6 +1669,7 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
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case OPT_TL_X:
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case OPT_BR_X:
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case OPT_CUSTOM_GAMMA:
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case OPT_THRESHOLD:
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case OPT_PREVIEW:
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*(SANE_Word *) val = dev->val[option].w;
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return SANE_STATUS_GOOD;
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@ -1679,6 +1725,7 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
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return SANE_STATUS_GOOD;
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/* Numeric side-effect free options */
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case OPT_THRESHOLD:
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case OPT_PREVIEW:
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dev->val[option].w = *(SANE_Word *) val;
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return SANE_STATUS_GOOD;
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@ -1703,12 +1750,14 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
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dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
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dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
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dev->opt[OPT_GAMMA_VECTOR_GRAY].cap |= SANE_CAP_INACTIVE;
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dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
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if (strcmp (dev->val[OPT_MODE].s, BLACK_WHITE_STR) == 0)
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{
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dev->depth = 8;
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dev->scan_mode = TECO_BW;
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dev->opt[OPT_DITHER].cap &= ~SANE_CAP_INACTIVE;
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dev->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE;
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}
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else if (strcmp (dev->val[OPT_MODE].s, GRAY_STR) == 0)
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{
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@ -221,7 +221,7 @@ getbitfield (unsigned char *pageaddr, int mask, int shift)
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/*--------------------------------------------------------------------------*/
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#define MAX_GAMMA_LENGTH 0x400 /* maximum number of value per color */
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#define GAMMA_LENGTH (dev->def->num_gamma_color) /* number of value per color */
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#define GAMMA_LENGTH (dev->def->num_gamma_color) /* number of value per color */
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/*--------------------------------------------------------------------------*/
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enum Teco_Option
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@ -245,6 +245,7 @@ enum Teco_Option
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OPT_GAMMA_VECTOR_B, /* Custom Blue Gamma table */
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OPT_GAMMA_VECTOR_GRAY, /* Custom Grayscale Gamma table */
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OPT_DITHER,
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OPT_THRESHOLD,
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OPT_PREVIEW,
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/* must come last: */
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@ -270,10 +271,10 @@ struct scanners_supported
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char scsi_teco_name[12]; /* real name of the scanner */
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enum
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{
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TECO_VM3510,
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TECO_VM3520,
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TECO_VM353A,
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TECO_VM4542
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TECO_VM3510,
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TECO_VM3520,
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TECO_VM353A,
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TECO_VM4542
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}
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tecoref;
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char *real_vendor; /* brand on the box */
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@ -285,10 +286,10 @@ struct scanners_supported
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int y_resolution_max; /* maximum Y dpi */
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int pass; /* number of passes in color mode */
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size_t num_gamma_color; /* number of value per color */
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int window_size; /* size of the SCAN window */
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size_t num_gamma_color; /* number of value per color */
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int window_size; /* size of the SCAN window */
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};
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@ -10,7 +10,7 @@
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;
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:backend "teco1" ; name of backend
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:version "1.0-7" ; version of backend
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:version "1.0-8" ; version of backend
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:status :beta ; :alpha, :beta, :stable, :new
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:manpage "sane-teco1" ; name of manpage (if it exists)
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:url "http://fz.eryx.net/sane/#teco" ; backend's web page
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