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better calibration for sm3600

DEVEL_2_0_BRANCH-1
Marian Eichholz 2001-05-29 20:28:18 +00:00
rodzic 44682ed3d4
commit ba98b533f6
1 zmienionych plików z 9 dodań i 5 usunięć
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14
backend/sm3600-homerun.c
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@ -207,6 +207,9 @@ DoCalibration
********************************************************************** */
#define CALIB_START 200
#define CALIB_LINES 8
#define CALIB_GAP 10
#define INST_ASSERT_CALIB() { if (this->nErrorState) \
{ free(pulSum); return ltError; } }
@ -218,7 +221,7 @@ TState DoCalibration(TInstance *this)
TState rc;
if (this->calibration.bCalibrated)
return SANE_STATUS_GOOD;
DoJog(this,220);
DoJog(this,CALIB_START);
/* scan a gray line at 600 DPI */
if (!this->calibration.achStripeY)
{
@ -228,9 +231,9 @@ TState DoCalibration(TInstance *this)
}
pulSum=calloc(MAX_PIXEL_PER_SCANLINE,sizeof(long));
if (!pulSum) return SetError(this,SANE_STATUS_NO_MEM,"no memory for calib sum");
for (iLine=0; iLine<10; iLine++)
for (iLine=0; iLine<CALIB_LINES; iLine++)
{
dprintf(DEBUG_CALIB,"calibrating %i...",iLine);
dprintf(DEBUG_CALIB,"calibrating %i...\n",iLine);
RegWriteArray(this,R_ALL, 74, auchRegsSingleLine);
INST_ASSERT_CALIB();
RegWrite(this,R_CTL, 1, 0x59); /* #2496[062.5] */
@ -246,12 +249,13 @@ TState DoCalibration(TInstance *this)
for (i=0; i<MAX_PIXEL_PER_SCANLINE; i++)
pulSum[i]+=(long)this->calibration.achStripeY[i]*
(long)this->calibration.achStripeY[i];
DoJog(this,CALIB_GAP);
}
for (i=0; i<MAX_PIXEL_PER_SCANLINE; i++)
this->calibration.achStripeY[i]=(unsigned char)(int)sqrt(pulSum[i]/10);
this->calibration.achStripeY[i]=(unsigned char)(int)sqrt(pulSum[i]/CALIB_LINES);
free(pulSum);
/* scan a color line at 600 DPI */
DoJog(this,-220-10);
DoJog(this,-CALIB_START-CALIB_LINES*CALIB_GAP);
INST_ASSERT();
this->calibration.bCalibrated=true;
return SANE_STATUS_GOOD;