[FFmpeg-devel] [PATCH 5/7] avradio/sdrdemux: adjust bandwidth to 200khz for FM probing
Michael Niedermayer
michael at niedermayer.cc
Mon Jul 17 03:27:02 EEST 2023
This improves the local noise floor value
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavradio/sdrdemux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavradio/sdrdemux.c b/libavradio/sdrdemux.c
index a4c590acf2..a0b80785ef 100644
--- a/libavradio/sdrdemux.c
+++ b/libavradio/sdrdemux.c
@@ -860,7 +860,7 @@ static int probe_fm(SDRContext *sdr)
{
int i;
int bandwidth_f = sdr->fm_bandwidth;
- int half_bw_i = bandwidth_f * (int64_t)sdr->block_size / sdr->sdr_sample_rate;
+ int half_bw_i = 200*1000 * (int64_t)sdr->block_size / sdr->sdr_sample_rate;
int floor_bw_i = 10*1000 * (int64_t)sdr->block_size / sdr->sdr_sample_rate;
float last_score[3] = {FLT_MAX, FLT_MAX, FLT_MAX};
int border_i = (sdr->sdr_sample_rate - FFMIN(sdr->bandwidth, sdr->sdr_sample_rate*7/8)) * sdr->block_size / sdr->sdr_sample_rate;
--
2.31.1
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