8876f6674a
minimodem: rename bfsk_sync_on_data to bfsk_do_rx_sync
2013-06-08 09:27:01 -07:00
d774ad74dd
minimodem: handle arbitrary --startbits N
...
minimodem --startbits N works for rx and tx, where (0 <= N <= 20).
Thanks Martyn (kronalias), for reporting.
2013-03-20 12:08:52 -07:00
7ab18a268f
minimodem: do not call setitimer(new_value=NULL)
...
Linux kernel warns:
minimodem calls setitimer() with new_value NULL pointer. Misfeature support
will be removed
Thanks Robert Hooker, for reporting.
2013-01-25 15:03:54 -08:00
9d3200ca60
autoreconf
2012-11-03 14:28:47 -07:00
032d0bb79c
minimodem: refine frame position if confidence falls
...
Allows for more accurate tracking, esp. for no-frame-bits protocols.
Fixes tests/test-80-SAME-datastream.
2012-11-03 14:20:33 -07:00
1446844d32
minimodem: do not transmit leader tone if no start bits
2012-11-03 14:10:44 -07:00
c2fa2dae93
fsk: fix FSK_DEBUG character decode
2012-11-03 13:26:10 -07:00
6ad778ce03
minimodem: fix --tx startbits/stopbits handling
...
Make --tx support specified --startbits and --stopbits; also enables --tx SAME.
Thanks to Jamie Batmanglidj for reporting the issue.
2012-11-01 12:48:40 -07:00
7fed380d0a
callerid: do not use recursive call to reset
...
Testing by Mike Tedesco shows the recursive databits_decode_callerid()
seems to break on OS X (only); I don't see why it should. Avoid the
issue by not making a recursive call.
2012-10-16 18:02:21 -07:00
93bf08f750
callerid: fix parser - do not store noise bytes
2012-10-10 10:05:51 -07:00
1a60f1c12d
update README text
2012-10-05 20:07:23 -07:00
65493fa12a
minimodem: --rx callerid
...
New "callerid" baudmode supports Bell202 Caller-ID (MDMF or SDMF) prototol.
2012-10-05 19:40:17 -07:00
49ccd10e1f
minimodem: --rx prints all bytes unmolested, unless --print-filter
...
Now, minimodem prints all received bytes without isprint() filtering,
unless --print-filter is specified. Allows for binary file transfers
and multibyte characters.
2012-10-05 13:29:30 -07:00
ead6952a58
(portability) simple-tone-generator.c needs stdio.h
2012-10-04 18:13:23 -07:00
577b84d7f2
(portability) use stdlib.h not malloc.h
2012-10-04 18:10:33 -07:00
d8f7601b4f
(portability) simpleaudio.c needs stdio.h
2012-10-04 18:08:31 -07:00
761cf00b16
minimodem: handle SIGINT on --rx: close the sa backend and print stats
2012-10-02 14:22:38 -07:00
2373364d9a
minimodem: performance: read samples in larger blocks
...
For performance, read samples from the simpleaudio backend in larger
blocks when the number of bits per frame ends up being small.
2012-10-01 21:00:28 -07:00
2af26a4d06
simpleaudio-alsa: allow max latency
...
Request "maximum possible allowed latency", to help avoid underruns.
2012-10-01 19:06:27 -07:00
151ee0e004
simpleaudio-alsa: handle underruns better; print '#'
2012-10-01 19:02:39 -07:00
b97aeb0778
simpleaudio-pulse: fix intermittent --tx noise
...
For some unknown reason setting attr.prebuf=1 causes horrible noise
for some playback sessions, so don't do that.
2012-10-01 14:30:00 -07:00
6340365e2f
simpleaudio-sndfile: fix minimodem tx_interactive
...
Un-break tx_interactive: minimodem enables tx_interactive whenever the
stream_name is NULL, so go back to using the stream_name as the sndfile
filename.
2012-09-10 20:02:53 -07:00
9f1695a3b6
minimodem: fix --auto-carrier crash on positive-shift modes
2012-09-09 17:42:53 -07:00
d603fc444d
minimodem: --alsa[=plughw:X,Y]
2012-09-09 15:24:35 -07:00
5ee6a23c42
simpleaudio: backend_device support
2012-09-09 15:24:01 -07:00
c2bb5c6205
simpleaudio-alsa: fix bogus latency, set 200 ms
2012-09-09 15:03:40 -07:00
fabd47ba99
minimodem: less aggressive refine on acquisition
2012-09-05 23:22:27 -07:00
c8dd7ac06b
minimodem: fix --rx-one
2012-09-05 09:37:06 -07:00
3a1469b85e
minimodem: fix usage message
2012-09-05 09:36:12 -07:00
8931ae1311
baudot: use non-Baudot chars for debug output
2012-09-04 15:37:19 -07:00
30de59026b
minimodem: --inverted switches the mark/space freqs
2012-09-04 16:26:10 -07:00
8731b54bc2
minimodem: refine fsk frame position on carrier acquisition
...
FSK_ANALYZE_NSTEPS was previously 10.
Now FSK_ANALYZE_NSTEPS_CARRIER_LOCK is 100, and FSK_ANALYZE_NSTEPS is
reduced to 4.
(Also, try_confidence_search_limit = INFINITY on carrier acquisition frame).
Effects: Better initial phase lock on signal in the first
place; sloppier tracking of fast/slow signals; reduced longterm CPU load.
2012-09-03 23:31:16 -07:00
aa1124d6e7
minimodem: fix incorrect try_max_nsamples calculation
2012-09-02 14:25:43 -07:00
fd45b5571c
minimodem: restrict try_max_nsamples to 75% of a bit-width
...
... actually 125% of a bit width before acquiring carrier.
2012-09-02 14:27:04 -07:00
7b0e47ac4e
minimodem: --binary-output
2012-09-01 00:09:32 -07:00
a172268117
minimodem: auto get samplerate from audio files
2012-09-02 18:10:59 -07:00
0f3338a91b
minimodem: match sync_byte in the fsk layer
2012-09-02 12:02:06 -07:00
9187dd60a7
minimodem: --rx same (NOAA SAME protocol)
2012-09-01 13:34:50 -07:00
04cc215640
minimodem: --sync-byte {0xXX}
2012-09-01 14:54:32 -07:00
82c72352ab
minimodem: --startbits; deprecate -T
2012-09-01 13:33:49 -07:00
e2a51f093a
databits: split out the databits implementations
...
rename framebits to databits
added databits_binary decoder
2012-08-31 21:39:08 -07:00
a7d1602c9d
minimodem: calculate frame_bits_{mask,shift}
2012-08-31 20:42:05 -07:00
cbd048aac6
minimodem: bfsk_nstartsbits variable
...
- FIXME: doesn't actually implement the proper expect_bits string
- only useful for testing SAME decoder's hardcoded "dddddddd" expect_bits
2012-08-30 16:02:53 -07:00
7b34e89433
minimodem: --stopbits replaces --txstopbits; better bps metric
...
RX metrics account for fractional number of stop bits (e.g 1.5);
RX bps metric slightly more accurate (?).
2012-08-30 15:05:33 -07:00
becf16761e
minimodem: fsk confidence thresholds: thresh=1.5, limit=2.3
...
Note: fsk_confidence_thresh can now be reduced to 1.5 due to track_amplitude.
2012-08-26 15:16:49 -07:00
3447a994b7
minimodem: track_amplitude signal amplitude drop
2012-08-30 00:07:15 -07:00
1ed3b8465a
fsk: confidence algo #6 : "SNR * (1-divergence)"
...
Disabled all the hardcoded noise limiters.
2012-08-24 22:38:41 -07:00
0c022aca03
minimodem: --rx-one quits after first no-carrier
2012-08-30 10:17:55 -07:00
b480b841da
minimodem: --Xrxnoise=factor adds test noise
...
Injects random noise to input signal (in memory) before analysis.
2012-08-30 00:00:19 -07:00
6d749c7771
simpleaudio-alsa: enable ALSA soft-resample
2012-08-29 21:26:47 -07:00
dd6040336d
minimodem: stats report ampl={amplitude}
2012-08-25 09:17:05 -07:00
f8434f3c94
simple-tone: fix sin() rounding for S16 shorts
...
- fix sine wave rounding for shorts
- short epsilon == 1
- clamp shorts to mag <= 1.0
2012-08-26 12:34:38 -07:00
762a3ea788
minimodem: --volume sets tx amplitude
2012-08-25 00:32:11 -07:00
501ee25c7d
fsk: expect_bits_string param, no start/stop bits required
...
fsk_find_frame() takes expect_bits_string (e.g. "10dddddddd1"), as a
parameter supplied by the caller allowing for encodings which don't use
any start/stop bits (e.g. just "dddddddd").
2012-08-24 13:20:20 -07:00
6bb683a90b
minimodem: fix broken -l switch
2012-08-23 19:23:33 -07:00
e9263c9c9d
fsk: fix noise <= EPSILON handling
...
Handle noise <= EPSILON better; fixes (im)perfect test cases on i386.
2012-08-19 15:58:08 -07:00
96ec6450bb
minimodem: fix size_t %zu warnings on 32-bit platforms
2012-08-19 14:39:14 -07:00
f81f069d95
minimodem: --limit (2.3) sets fsk_confidence_search_limit
...
Significant performance enhancements from fsk_confidence_search_limit:
runs far fewer FFT's when --limit (default 2.3) is less than INFINITY.
2012-08-18 21:24:01 -07:00
e1b055cf4f
fsk: AVOID_TRANSIENTS noise limiter re-enabled
...
Algo #5 needs this, just as #3 did.
2012-08-18 19:15:33 -07:00
076343a9c3
fsk: MIN_MAGNITUDE noise limiter
2012-08-18 19:15:07 -07:00
725355aa43
fsk: performance: do not bzero fftin
2012-08-18 16:52:07 -07:00
bc30de33a4
minimodem: fix carrier_nsamples
...
All test cases (except 45.45 RTTY) get rate perfect!
2012-08-18 13:43:45 -07:00
18b1eb7457
minimodem: default confidence = 2.0 for SNR algo #5
2012-08-18 19:19:22 -07:00
cf9ba20ee0
fsk: confidence algo #5 (SNR)
...
Computes SNR confidence value, where "signal" is the magnitude of the FSK
driven frequency, and "noise" is the magnitude of the non-driven frequency.
(Also includes unused algo #4 code, which may not compile anymore.)
2012-08-14 22:31:30 -07:00
df80c98e22
minimodem: fsk_frame_overscan replaces FSK_SCAN_LAG
2012-08-16 01:03:54 -07:00
6ee10626c9
simple-tone: use integer mod not fmod
2012-08-15 16:57:39 -07:00
fbc99e54fb
simpleaudio: benchmarks cpu id
2012-08-15 12:00:17 -07:00
1dff8e726f
move src/testcases to ./tests
2012-08-15 11:44:26 -07:00
f6c4697cf9
.gitignore files
2012-08-14 13:29:00 -07:00
8533fd1550
simpleaudio: fix --benchmarks for sizeof(long)==4 platforms
2012-08-14 08:28:36 -07:00
67eb9821be
update copyright dates
2012-08-13 21:51:53 -07:00
5fb00dd283
self-test: more test cases
2012-08-13 21:19:08 -07:00
d8ed9bef82
self-test: print the test args
2012-08-13 21:17:38 -07:00
a9c2258706
minimodem: use sine lookup table of 1024, or --lut={tx_sin_table_len}
2012-08-13 21:17:03 -07:00
e2225d6098
simple-tone: sin() lookup tables
2012-08-13 21:09:24 -07:00
d273828f80
minimodem: --float-samples: short arg -F deprecated
2012-08-13 15:55:57 -07:00
bd08b9002c
minimodem: --benchmarks: runs internal performance tests
2012-08-13 15:51:04 -07:00
23ecd6f5a7
simpleaudio: benchmark backend
2012-08-13 15:50:04 -07:00
9948e7c7dd
minimodem: --tx uses S16 samples by default, --float-samples overrides
2012-08-12 15:47:59 -07:00
6671138471
simpleaudio: S16 format handling for backends
2012-08-12 15:39:04 -07:00
a65a20d274
simpleaudio: generalize r/w buf pointer types
2012-08-12 14:39:23 -07:00
4d326a8c82
simpleaudio: generalized simpleaudio_open_stream
2012-08-12 14:24:55 -07:00
5dddc1445a
simple-tone: generate S16 format samples
2012-08-11 21:19:30 -07:00
3053ea78bc
simpleaudio: SA_SAMPLE_FORMAT framework
2012-08-11 21:00:37 -07:00
39bee9adf1
simpleaudio: get_framesize
2012-08-11 20:40:20 -07:00
07a8ca158b
testcases: test-10-verify-perfect
2012-08-11 18:22:43 -07:00
ae6d387d2d
self-test: rename testcases
2012-08-11 16:31:05 -07:00
f3a9337f8d
self-test: change arg order
2012-08-11 16:25:51 -07:00
8d90e839d7
minimodem: --samplerate sets the audio sample rate
2012-08-11 10:24:28 -07:00
22317f54fc
simpleaudio: handle any audio sample rate
2012-08-11 10:07:12 -07:00
500208ba81
simpleaudio-alsa: do not allow soft_resample
2012-08-11 10:28:20 -07:00
b78828ea11
minimodem: usage message fix
2012-08-08 20:18:52 -07:00
4b926d58bb
minimodem: --alsa selects ALSA at runtime
...
./configure now enables --with-pulseaudio and --with-alsa by default;
either can be disabled.
minimodem --alsa: uses ALSA at runtime instead of the default PulseAudio.
2012-08-08 20:10:55 -07:00
445156dfa0
minimodem: man page cleanup
2012-08-08 19:58:05 -07:00
d1f8966ff1
simpleaudio-alsa: correct comments
2012-08-08 18:56:01 -07:00
7cb56487f8
simpleaudio-alsa: do not fiddle with sw params at all
2012-08-08 18:53:24 -07:00
2baf78cba6
simpleaudio-alsa: use default latency, not minimum
2012-08-08 18:35:11 -07:00
deed39904d
simpleaudio-alsa: loop in the sa_ routine; fix xruns
2012-08-08 16:24:44 -07:00
95d7a87ce1
minimodem: configure --with-alsa for ALSA instead of Pulseaudio
2012-08-08 14:26:39 -07:00
e01ccb1d71
simpleaudio: alsa back-end
2012-08-08 14:25:53 -07:00
Kamal Mostafa