iq_fm --wav switch creates wav that canno't be played with the aplay about rs HOT 7 CLOSED

iq_fmdoes not write the size/length. because it does not know the length.
cf.
#23 (comment)

from rs.

Changed (test-branch)

--- a/demod/iq_svcl/iq_fm.c
+++ b/demod/iq_svcl/iq_fm.c
@@ -180,7 +180,7 @@ static float write_wav_header(pcm_t *pcm) {
     }
 
     fwrite("data", 1, 4, fp);
-    data = 0; // datasize
+    data = 0xFFFFFFFF; // datasize unknown
     fwrite(&data,  1, 4, fp);

Should play streams now. The actual size/length can later be repaired:

sox --ignore-length file_nolen.wav file.wav

from rs.

hm, sox writes a value there nevertheless

00000000  52 49 46 46 24 f0 ff 7f  57 41 56 45 66 6d 74 20  |RIFF$...WAVEfmt |
00000010  10 00 00 00 01 00 01 00  80 bb 00 00 00 77 01 00  |.............w..|
00000020  02 00 10 00 64 61 74 61  00 f0 ff 7f 00 00 00 00  |....data........|

7FFFF024
7FFFF000

from rs.

sorry, posted before reading your comment above. Thanks

from rs.

but note that sox treat 32 bits length field as a signed integer

from rs.

I know, I'm not sure what the right value would be to indicate a stream of unknown length, but 0xFFFFFFFF seems to work with aplay and audacity. Seems like it is enough to write the data length.

from rs.

yep, seems to work now

from rs.