Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavradio/sdrinradio.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/libavradio/sdrinradio.c b/libavradio/sdrinradio.c
index c24a30d746..5c14250f8c 100644
--- a/libavradio/sdrinradio.c
+++ b/libavradio/sdrinradio.c
@@ -103,6 +103,7 @@ static int64_t sdrindev_set_frequency_callback(SDRContext
*sdr, int64_t freq)
SoapySDRDevice *soapy = sdr->soapy;
if (soapy) {
if (sdr->rtlsdr_fixes>0) {
+ AVDictionaryEntry *e = av_dict_get(sdr->driver_dict, "tuner",
NULL, 0);
// The official unmodified RTLSDR needs to be put in Direct
sampling Q-ADC mode below 24Mhz and non direct sampling above
const char *value = freq < 24000000 ? "2" : "0";
if (!sdr->current_direct_samp || strcmp(value,
sdr->current_direct_samp)) {
@@ -112,12 +113,14 @@ static int64_t sdrindev_set_frequency_callback(SDRContext
*sdr, int64_t freq)
} else
sdr->current_direct_samp = value;
}
- //The R820T has a 16 bit fractional PLL which can do only
multiplies of 439.45
- //Its more complex but this approximation works
- //It has to be noted that SOAPY does not tell us about this,
instead saopy
- //pretends whatever we ask for we get exactly, but we dont
- //For more details see:
michelebavaro.blogspot.com/2014/05/gnss-carrier-phase-rtlsdr-and.html
- freq = lrint(freq / 439.45) * 439.45;
+ if (e && strstr(e->value, "R820T")) {
+ //The R820T has a 16 bit fractional PLL which can do only
multiplies of 439.45
+ //Its more complex but this approximation works
+ //It has to be noted that SOAPY does not tell us about this,
instead saopy
+ //pretends whatever we ask for we get exactly, but we dont
+ //For more details see:
michelebavaro.blogspot.com/2014/05/gnss-carrier-phase-rtlsdr-and.html
+ freq = lrint(freq / 439.45) * 439.45;
+ }
}
if (SoapySDRDevice_setFrequency(soapy, SOAPY_SDR_RX, 0, freq, NULL) !=
0) {
--
2.31.1
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