SANE_Status
sane_control_option (SANE_Handle handle, SANE_Int option,
SANE_Action action, void *val, SANE_Int *info)
{
Tamarack_Scanner *s = handle;
SANE_Status status;
SANE_Word cap;
if (info)
*info = 0;
if (s->scanning)
return SANE_STATUS_DEVICE_BUSY;
if (option >= NUM_OPTIONS)
return SANE_STATUS_INVAL;
cap = s->opt[option].cap;
if (!SANE_OPTION_IS_ACTIVE (cap))
return SANE_STATUS_INVAL;
if (action == SANE_ACTION_GET_VALUE) {
switch (option) {
/* word options: */
case OPT_PREVIEW:
case OPT_GRAY_PREVIEW:
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
case OPT_NUM_OPTS:
case OPT_TRANS:
case OPT_BRIGHTNESS:
case OPT_CONTRAST:
case OPT_THRESHOLD:
#if 0
case OPT_CUSTOM_GAMMA:
#endif
*(SANE_Word *) val = s->val[option].w;
return SANE_STATUS_GOOD;
#if 0
/* word-array options: */
case OPT_GAMMA_VECTOR:
case OPT_GAMMA_VECTOR_R:
case OPT_GAMMA_VECTOR_G:
case OPT_GAMMA_VECTOR_B:
memcpy (val, s->val[option].wa, s->opt[option].size);
return SANE_STATUS_GOOD;
#endif
/* string options: */
case OPT_MODE:
strcpy (val, s->val[option].s);
return SANE_STATUS_GOOD;
}
} else if (action == SANE_ACTION_SET_VALUE) {
if (!SANE_OPTION_IS_SETTABLE (cap))
return SANE_STATUS_INVAL;
status = constrain_value (s, option, val, info);
if (status != SANE_STATUS_GOOD)
return status;
switch (option)
{
/* (mostly) side-effect-free word options: */
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
if (info)
*info |= SANE_INFO_RELOAD_PARAMS;
/* fall through */
case OPT_PREVIEW:
case OPT_GRAY_PREVIEW:
case OPT_BRIGHTNESS:
case OPT_CONTRAST:
case OPT_THRESHOLD:
case OPT_TRANS:
s->val[option].w = *(SANE_Word *) val;
return SANE_STATUS_GOOD;
#if 0
/* side-effect-free word-array options: */
case OPT_GAMMA_VECTOR:
case OPT_GAMMA_VECTOR_R:
case OPT_GAMMA_VECTOR_G:
case OPT_GAMMA_VECTOR_B:
memcpy (s->val[option].wa, val, s->opt[option].size);
return SANE_STATUS_GOOD;
/* options with side-effects: */
case OPT_CUSTOM_GAMMA:
w = *(SANE_Word *) val;
if (w == s->val[OPT_CUSTOM_GAMMA].w)
return SANE_STATUS_GOOD; /* no change */
s->val[OPT_CUSTOM_GAMMA].w = w;
if (w) {
s->mode = make_mode (s->val[OPT_MODE].s);
if (s->mode == GREYSCALE) {
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
} else if (s->mode == TRUECOLOR) {
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
}
} else {
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
}
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS;
return SANE_STATUS_GOOD;
#endif
case OPT_MODE:
{
if (s->val[option].s)
free (s->val[option].s);
s->val[option].s = strdup (val);
s->mode = make_mode (s->val[OPT_MODE].s);
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
#if 0
s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
#endif
if (strcmp (val, SANE_VALUE_SCAN_MODE_LINEART) == 0)
s->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE;
else {
s->opt[OPT_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
}
#if 0
if (!binary)
s->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE;
if (s->val[OPT_CUSTOM_GAMMA].w) {
if (strcmp (val, SANE_VALUE_SCAN_MODE_GRAY) == 0)
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
else if (strcmp (val, SANE_VALUE_SCAN_MODE_COLOR) == 0) {
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
}
}
#endif
return SANE_STATUS_GOOD;
}
}
}
return SANE_STATUS_INVAL;
}
TEST(MathTest, Constrain)
{
for (int i = 0; i < 1000; i++) {
if (i < 250) {
EXPECT_EQ(250, constrain_float(i, 250, 500));
EXPECT_EQ(250, constrain_int16(i, 250, 500));
EXPECT_EQ(250, constrain_int32(i, 250, 500));
} else if (i > 500) {
EXPECT_EQ(500, constrain_float(i, 250, 500));
EXPECT_EQ(500, constrain_int16(i, 250, 500));
EXPECT_EQ(500, constrain_int32(i, 250, 500));
} else {
EXPECT_EQ(i, constrain_float(i, 250, 500));
EXPECT_EQ(i, constrain_int16(i, 250, 500));
EXPECT_EQ(i, constrain_int32(i, 250, 500));
}
}
for (int i = 0; i <= 1000; i++) {
int c = i - 1000;
if (c < -250) {
EXPECT_EQ(-250, constrain_float(c, -250, -50));
EXPECT_EQ(-250, constrain_int16(c, -250, -50));
EXPECT_EQ(-250, constrain_int32(c, -250, -50));
} else if(c > -50) {
EXPECT_EQ(-50, constrain_float(c, -250, -50));
EXPECT_EQ(-50, constrain_int16(c, -250, -50));
EXPECT_EQ(-50, constrain_int32(c, -250, -50));
} else {
EXPECT_EQ(c, constrain_float(c, -250, -50));
EXPECT_EQ(c, constrain_int16(c, -250, -50));
EXPECT_EQ(c, constrain_int32(c, -250, -50));
}
}
for (int i = 0; i <= 2000; i++) {
int c = i - 1000;
if (c < -250) {
EXPECT_EQ(-250, constrain_float(c, -250, 50));
EXPECT_EQ(-250, constrain_int16(c, -250, 50));
EXPECT_EQ(-250, constrain_int32(c, -250, 50));
} else if(c > 50) {
EXPECT_EQ(50, constrain_float(c, -250, 50));
EXPECT_EQ(50, constrain_int16(c, -250, 50));
EXPECT_EQ(50, constrain_int32(c, -250, 50));
} else {
EXPECT_EQ(c, constrain_float(c, -250, 50));
EXPECT_EQ(c, constrain_int16(c, -250, 50));
EXPECT_EQ(c, constrain_int32(c, -250, 50));
}
}
EXPECT_EQ(20.0, constrain_value(20.0, 19.9, 20.1));
EXPECT_EQ(20.0, constrain_value(20.0f, 19.9f, 20.1f));
EXPECT_EQ(19.9, constrain_value(19.9, 19.9, 20.1));
EXPECT_EQ(19.9f, constrain_value(19.9f, 19.9f, 20.1f));
EXPECT_EQ(19.9, constrain_value(19.8, 19.9, 20.1));
EXPECT_EQ(19.9f, constrain_value(19.8f, 19.9f, 20.1f));
}
