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| author | Stefan Pluecken <stefan.pluecken@multimedia-labs.de> | 2010-07-05 16:12:08 +0200 |
|---|---|---|
| committer | Stefan Pluecken <stefan.pluecken@multimedia-labs.de> | 2010-07-05 16:12:08 +0200 |
| commit | 547a6fbb55113fb70f39adb4ae96699f4f679d03 (patch) | |
| tree | 42fd9e4185127e77c704135a2c55036422a7d791 /lib/dvb/frontend.cpp | |
| parent | 035a80e858f539b09e140adb35f92c24787d95d5 (diff) | |
| download | enigma2-547a6fbb55113fb70f39adb4ae96699f4f679d03.tar.gz enigma2-547a6fbb55113fb70f39adb4ae96699f4f679d03.zip | |
add snr calculations for CXD1981 frontend
Diffstat (limited to 'lib/dvb/frontend.cpp')
| -rw-r--r-- | lib/dvb/frontend.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/dvb/frontend.cpp b/lib/dvb/frontend.cpp index a1ba8fe5..abbb8d29 100644 --- a/lib/dvb/frontend.cpp +++ b/lib/dvb/frontend.cpp @@ -906,6 +906,19 @@ int eDVBFrontend::readFrontendData(int type) } else if (strstr(m_description, "BCM4506") || strstr(m_description, "BCM4505")) ret = (snr * 100) >> 8; + else if (!strcmp(m_description, "CXD1981")) + { + int mse = (~snr) & 0xFF; + switch (parm_u_qam_modulation) { + case QAM_16: + case QAM_64: + case QAM_256: ret = (int)(-950 * log(((double)mse) / 760)); break; + case QAM_32: + case QAM_128: ret = (int)(-875 * log(((double)mse) / 650)); break; + + default: break; + } + } if (type == signalQuality) { |