kopia lustrzana https://gitlab.com/sane-project/backends
genesys: Remove duplicated coarse calibration on gl646
Povilas Kanapickas
rodzic
256a90e29d
commit
edb375fbcc
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@ -2406,108 +2406,6 @@ void CommandSetGl646::offset_calibration(Genesys_Device* dev, const Genesys_Sens
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dev->frontend.get_offset(2));
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}
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/** @brief gain calibration for Analog Device frontends
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* Alternative coarse gain calibration
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*/
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static void ad_fe_coarse_gain_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
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Genesys_Register_Set& regs, int dpi)
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{
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DBG_HELPER(dbg);
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(void) sensor;
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(void) regs;
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unsigned int i, channels, val;
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unsigned count, pass;
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float average;
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char title[32];
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/* setup for a RGB scan, one full sensor's width line */
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/* resolution is the one from the final scan */
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channels = 3;
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const auto& calib_sensor = sanei_genesys_find_sensor(dev, dpi, 3, ScanMethod::FLATBED);
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unsigned pixels = dev->model->x_size_calib_mm * dpi / MM_PER_INCH;
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unsigned lines = CALIBRATION_LINES;
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if (dev->model->is_cis) {
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lines = ((lines + 2) / 3) * 3;
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}
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ScanSession session;
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session.params.xres = dpi;
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session.params.yres = dpi;
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session.params.startx = 0;
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session.params.starty = 0;
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session.params.pixels = pixels;
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session.params.lines = lines;
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session.params.depth = 8;
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session.params.channels = 3;
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session.params.scan_method = dev->settings.scan_method;
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session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
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session.params.color_filter = ColorFilter::RED;
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session.params.flags = ScanFlag::DISABLE_SHADING;
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if (dev->settings.scan_method == ScanMethod::TRANSPARENCY) {
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session.params.flags |= ScanFlag::USE_XPA;
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}
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compute_session(dev, session, calib_sensor);
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std::size_t size = channels * pixels * lines;
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/* start gain value */
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dev->frontend.set_gain(0, 1);
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dev->frontend.set_gain(1, 1);
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dev->frontend.set_gain(2, 1);
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average = 0;
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pass = 0;
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std::vector<uint8_t> line;
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// loop until each channel raises to acceptable level
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while ((average < calib_sensor.gain_white_ref) && (pass < 30)) {
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// scan with no move
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dev->cmd_set->init_regs_for_scan_session(dev, calib_sensor, &dev->reg, session);
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simple_scan(dev, calib_sensor, session, false, line,
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"ad_fe_coarse_gain_calibration");
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/* log scanning data */
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if (DBG_LEVEL >= DBG_data) {
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std::sprintf(title, "gl646_alternative_gain%02d.pnm", pass);
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sanei_genesys_write_pnm_file(title, line.data(), 8, channels, pixels, lines);
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}
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pass++;
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/* computes white average */
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average = 0;
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count = 0;
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for (i = 0; i < size; i++)
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{
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val = line[i];
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average += val;
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count++;
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}
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average = average / count;
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uint8_t gain0 = dev->frontend.get_gain(0);
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// adjusts gain for the channel
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if (average < calib_sensor.gain_white_ref) {
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gain0 += 1;
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}
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dev->frontend.set_gain(0, gain0);
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dev->frontend.set_gain(1, gain0);
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dev->frontend.set_gain(2, gain0);
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DBG(DBG_proc, "%s: average = %.2f, gain = %d\n", __func__, average, gain0);
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}
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DBG(DBG_info, "%s: gains=(%d,%d,%d)\n", __func__,
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dev->frontend.get_gain(0),
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dev->frontend.get_gain(1),
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dev->frontend.get_gain(2));
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}
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/**
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* Alternative coarse gain calibration
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* this on uses the settings from offset_calibration. First scan moves so
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@ -2520,15 +2418,12 @@ void CommandSetGl646::coarse_gain_calibration(Genesys_Device* dev, const Genesys
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{
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DBG_HELPER(dbg);
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(void) dpi;
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(void) sensor;
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(void) regs;
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float average[3];
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char title[32];
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if (dev->model->sensor_id == SensorId::CIS_XP200) {
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ad_fe_coarse_gain_calibration(dev, sensor, regs, sensor.optical_res);
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return;
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}
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/* setup for a RGB scan, one full sensor's width line */
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/* resolution is the one from the final scan */
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unsigned channels = 3;
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@ -2596,20 +2491,18 @@ void CommandSetGl646::coarse_gain_calibration(Genesys_Device* dev, const Genesys
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dev->cmd_set->init_regs_for_scan_session(dev, calib_sensor, &dev->reg, session);
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simple_scan(dev, calib_sensor, session, false, line, "coarse_gain_calibration");
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/* log scanning data */
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if (DBG_LEVEL >= DBG_data)
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{
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std::sprintf(title, "gl646_gain%02d.pnm", pass);
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sanei_genesys_write_pnm_file(title, line.data(), 8, channels, pixels, lines);
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}
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pass++;
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if (DBG_LEVEL >= DBG_data) {
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std::sprintf(title, "gl646_gain%02d.pnm", pass);
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sanei_genesys_write_pnm_file(title, line.data(), 8, channels, pixels, lines);
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}
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pass++;
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/* average high level for each channel and compute gain
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to reach the target code
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we only use the central half of the CCD data */
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// average high level for each channel and compute gain to reach the target code
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// we only use the central half of the CCD data
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for (unsigned k = 0; k < channels; k++) {
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/* we find the maximum white value, so we can deduce a threshold
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to average white values */
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// we find the maximum white value, so we can deduce a threshold
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// to average white values
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unsigned maximum = 0;
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for (unsigned i = 0; i < lines; i++) {
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for (unsigned j = 0; j < pixels; j++) {
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@ -2618,38 +2511,37 @@ void CommandSetGl646::coarse_gain_calibration(Genesys_Device* dev, const Genesys
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}
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}
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/* threshold */
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maximum = static_cast<int>(maximum * 0.9);
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/* computes white average */
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average[k] = 0;
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// computes white average
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average[k] = 0;
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unsigned count = 0;
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for (unsigned i = 0; i < lines; i++) {
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for (unsigned j = 0; j < pixels; j++) {
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/* averaging only white points allow us not to care about dark margins */
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// averaging only white points allow us not to care about dark margins
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unsigned val = line[i * channels * pixels + j + k];
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if (val > maximum)
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{
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average[k] += val;
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count++;
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}
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if (val > maximum) {
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average[k] += val;
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count++;
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}
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}
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}
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average[k] = average[k] / count;
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average[k] = average[k] / count;
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/* adjusts gain for the channel */
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if (average[k] < calib_sensor.gain_white_ref)
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dev->frontend.set_gain(k, dev->frontend.get_gain(k) + 1);
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// adjusts gain for the channel
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if (average[k] < calib_sensor.gain_white_ref) {
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dev->frontend.set_gain(k, dev->frontend.get_gain(k) + 1);
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}
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DBG(DBG_proc, "%s: channel %d, average = %.2f, gain = %d\n", __func__, k, average[k],
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dev->frontend.get_gain(k));
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}
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DBG(DBG_proc, "%s: channel %d, average = %.2f, gain = %d\n", __func__, k, average[k],
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dev->frontend.get_gain(k));
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}
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}
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DBG(DBG_info, "%s: gains=(%d,%d,%d)\n", __func__,
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dev->frontend.get_gain(0),
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dev->frontend.get_gain(1),
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dev->frontend.get_gain(2));
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DBG(DBG_info, "%s: gains=(%d,%d,%d)\n", __func__,
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dev->frontend.get_gain(0),
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dev->frontend.get_gain(1),
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dev->frontend.get_gain(2));
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}
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/**
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