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[FFmpeg-devel,5/7] avradio/sdrdemux: adjust bandwidth to 200khz for FM probing

Message ID 20230717002704.3092192-5-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,1/7] avradio/sdrdemux: icarrier just needs phase 2 block size | expand

Checks

Context Check Description
andriy/configure_x86 warning Failed to apply patch
yinshiyou/configure_loongarch64 warning Failed to apply patch

Commit Message

Michael Niedermayer July 17, 2023, 12:27 a.m. UTC 
This improves the local noise floor value

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavradio/sdrdemux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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;