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Miroslav Slugeň thunder.m at email.czHi, i used git from 14.9.2013, if you get errors from actual git it could be because some functions might go into upstream, i also add as attachment just rtl_fm.c so just replace it your version with this version and it should work. I have RDS decoder also, but it is very ugly and not all issues are solved. Miroslav Slugeň +420 724 825 885 Michał Morański napsal(a): > W dniu 2013-09-13 15:22, Miroslav Slugeň pisze: >> Hi again, >> >> I am working on my own SDR project for Stereo FM radio support, but i >> would like to also improve quality for rtl_fm application, i made >> unoficial patch to add: >> >> Complex FIR - to filter strong signals close to wanted signal >> Real FIR - to filter pilot from FM >> Stereo FIR >> Stereo Deemphasis >> AGC support - it can give better resolution of IQ data >> >> Some other improvments in FM radio code. >> >> All FIR filters has 3 possible variants, simple, LUT, SSE2 instricts, >> of course SSE is the fastest one and it should works on Intel Atoms, >> but not on ARM. >> >> Feel free to use any part of code in any of you programs, I know that >> this code is little to much to add it into rtl_fm, but maybe it could >> somebody help to recieve HW stereo FM radio. >> >> Speed of SSE code is much better than anything you can get around >> here, on Core i7 it consume only 5% of one CPU, so i could demodulate >> at least 80 channels at the same time in stereo quality of course. >> >> I tried this code only on AMD64 and GCC Linux, so i am not sure if it >> can be compiled under windows. >> > Hi! Very nice to hear, that someone working on Stereo FM reception. I'm > building a small remote devices with rtl-dongles as fm stereo receivers. > Now i'm using gnu-radio to decode fm-stereo, but as you all know, > gnu-radio is a large and heavy project and it's wasting its > capatibilities in that role. > It would be very nice if native rtl-sdr software can decode fm-stereo. > > Which version of rtl-sdr was used as base version? I'm getting errors > after applying the patch to last version: > > patching file rtl_fm.c > Hunk #2 succeeded at 47 (offset 5 lines). > Hunk #3 succeeded at 87 (offset 9 lines). > Hunk #4 succeeded at 144 (offset 9 lines). > Hunk #5 succeeded at 169 (offset 9 lines). > Hunk #6 succeeded at 190 (offset 9 lines). > Hunk #7 FAILED at 239. > Hunk #8 FAILED at 258. > Hunk #9 succeeded at 314 (offset 13 lines). > Hunk #10 succeeded at 420 (offset 13 lines). > Hunk #11 succeeded at 994 (offset 13 lines). > Hunk #12 FAILED at 1106. > Hunk #13 succeeded at 1148 (offset 15 lines). > Hunk #14 succeeded at 1259 (offset 35 lines). > Hunk #15 succeeded at 1268 (offset 35 lines). > Hunk #16 succeeded at 1290 (offset 35 lines). > Hunk #17 succeeded at 1301 with fuzz 2 (offset 36 lines). > Hunk #18 succeeded at 1351 (offset 38 lines). > Hunk #19 succeeded at 1378 (offset 38 lines). > Hunk #20 succeeded at 1389 (offset 38 lines). > Hunk #21 succeeded at 1508 (offset 50 lines). > Hunk #22 succeeded at 1527 (offset 50 lines). > 3 out of 22 hunks FAILED -- saving rejects to file rtl_fm.c.rej > > P.S. Are you planning to add support for RDS in the future? > > Regards, Michał. > > -------------- next part -------------- A non-text attachment was scrubbed... Name: rtl_fm.c Type: text/x-csrc Size: 48703 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/osmocom-sdr/attachments/20130916/6aee5898/attachment.bin>