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Gain settings.

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This commit is contained in:
hexameron
2015-05-21 18:09:12 +00:00
parent c46e841a48
commit 00ed2c2004
8 changed files with 93 additions and 80 deletions
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plugins/samplesource/v4l-msi/v4lsource.cpp
+22 -8
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@@ -146,10 +146,7 @@ V4LThread::set_sample_rate(double samp_rate)
frequency.tuner = 0;
frequency.type = V4L2_TUNER_ADC;
frequency.frequency = samp_rate;
xioctl(fd, VIDIOC_S_FREQUENCY, &frequency);
return;
}
// Cannot change freq while streaming
@@ -164,10 +161,7 @@ V4LThread::set_center_freq(double freq)
frequency.tuner = 1;
frequency.type = V4L2_TUNER_RF;
frequency.frequency = freq;
xioctl(fd, VIDIOC_S_FREQUENCY, &frequency);
return;
}
void
@@ -196,8 +190,6 @@ V4LThread::set_bandwidth(double bandwidth)
ext_ctrls.count = 1;
ext_ctrls.controls = &ext_ctrl;
xioctl(fd, VIDIOC_S_EXT_CTRLS, &ext_ctrls);
return;
}
void
@@ -216,7 +208,29 @@ V4LThread::set_tuner_gain(double gain)
ext_ctrls.count = 1;
ext_ctrls.controls = &ext_ctrl;
xioctl(fd, VIDIOC_S_EXT_CTRLS, &ext_ctrls);
}
void
V4LThread::set_amps(bool lna, bool on)
{
struct v4l2_ext_controls ext_ctrls;
struct v4l2_ext_control ext_ctrl;
if (fd <= 0)
return;
memset (&ext_ctrl, 0, sizeof(ext_ctrl));
memset (&ext_ctrls, 0, sizeof(ext_ctrls));
if (lna)
ext_ctrl.id = CID_TUNER_LNA_GAIN;
else
ext_ctrl.id = CID_TUNER_MIXER_GAIN;
ext_ctrl.value = on;
ext_ctrls.ctrl_class = CID_CLASS_RF;
ext_ctrls.count = 1;
ext_ctrls.controls = &ext_ctrl;
xioctl(fd, VIDIOC_S_EXT_CTRLS, &ext_ctrls);
}
#define CASTUP (int)(qint16)