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genesys: Return errors as exceptions from *read_scancnt()

merge-requests/101/head
Povilas Kanapickas 2019-07-14 23:40:48 +03:00
rodzic 5c0a382bc9
commit 478ddd5d01
4 zmienionych plików z 6 dodań i 22 usunięć
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9
backend/genesys_gl841.cc
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@ -3020,20 +3020,13 @@ gl841_detect_document_end (Genesys_Device * dev)
* amount of data to scan form the hardware settings
*/
try {
status = sanei_genesys_read_scancnt(dev, &scancnt);
sanei_genesys_read_scancnt(dev, &scancnt);
} catch (...) {
dev->total_bytes_to_read = dev->total_bytes_read;
dev->read_bytes_left = 0;
throw;
}
if(status!=SANE_STATUS_GOOD)
{
dev->total_bytes_to_read = dev->total_bytes_read;
dev->read_bytes_left = 0;
DBG(DBG_proc, "%s: finished\n", __func__);
return SANE_STATUS_GOOD;
}
if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS && dev->model->is_cis)
{
scancnt/=3;

12
backend/genesys_gl843.cc
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@ -1947,18 +1947,13 @@ gl843_detect_document_end (Genesys_Device * dev)
read_bytes_left = (int) dev->read_bytes_left;
DBG(DBG_io, "%s: read_bytes_left=%d\n", __func__, read_bytes_left);
/* get lines read */
// get lines read
try {
status = sanei_genesys_read_scancnt(dev, &scancnt);
sanei_genesys_read_scancnt(dev, &scancnt);
} catch (...) {
flines = 0;
}
if (status != SANE_STATUS_GOOD)
{
flines = 0;
}
else
{
/* compute number of line read */
tmp = (int) dev->total_bytes_read;
if (depth == 1 || dev->settings.scan_mode == ScanColorMode::LINEART)
@ -1970,7 +1965,6 @@ gl843_detect_document_end (Genesys_Device * dev)
flines = scancnt - flines;
DBG(DBG_io, "%s: %d scanned but not read lines\n", __func__, flines);
}
/* adjust number of bytes to read
* we need to read the final bytes which are word per line * number of last lines

4
backend/genesys_low.cc
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@ -770,8 +770,7 @@ sanei_genesys_read_valid_words (Genesys_Device * dev, unsigned int *words)
/** read the number of lines scanned
* ie registers 4b-4c-4d
*/
SANE_Status
sanei_genesys_read_scancnt (Genesys_Device * dev, unsigned int *words)
void sanei_genesys_read_scancnt(Genesys_Device* dev, unsigned int* words)
{
DBG_HELPER(dbg);
uint8_t value;
@ -799,7 +798,6 @@ sanei_genesys_read_scancnt (Genesys_Device * dev, unsigned int *words)
}
DBG(DBG_proc, "%s: %d lines\n", __func__, *words);
return SANE_STATUS_GOOD;
}
/** @brief Check if the scanner's internal data buffer is empty

3
backend/genesys_low.h
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@ -1756,8 +1756,7 @@ sanei_genesys_init_shading_data (Genesys_Device * dev, const Genesys_Sensor& sen
extern SANE_Status sanei_genesys_read_valid_words (Genesys_Device * dev,
unsigned int *steps);
extern SANE_Status sanei_genesys_read_scancnt (Genesys_Device * dev,
unsigned int *steps);
extern void sanei_genesys_read_scancnt(Genesys_Device* dev, unsigned int* steps);
extern SANE_Status sanei_genesys_read_feed_steps (Genesys_Device * dev,
unsigned int *steps);