Linux usage Notes
=================
-1. Config is stored in ~/.FMDV2, rm this file to restore defaults
+1. Config is stored in ~/.FreeDV, rm this file to restore defaults
-BUILDING fdmdv2 for Linux
+BUILDING FreeDV for Linux
=========================
-Build wxWidgets
----------------
+1 FreeDV was developed on Ubuntu 9.1 and 10.04 systems. I installed the
+ Ubuntu packages:
+
+ libsamplerate, libsamplerate-dev
+ libsndfile1, libsndfile1-dev
+
+2. Some people have also reported needing libasound (and -lasound in
+ the linker line of Makefile.linux)
+
+3. Then build the other libraries below from source. At present the
+ way each package is built and installed is not consistent. Some
+ are installed with "make install", others are pointed too via
+ Makefile variables.
+
+4. You may need to edit the Makefile.linux variables for your system:
+
+ WX_GTK_PATH
+ CODEC2_PATH
+ SOX_LIB_PATH
+
+wxWidgets
+---------
1. Download wxWidgets 2.9.4 or later and untar
really want to), it can be used by fdmdv2 out of the directory you
build it in.
-Build portaudio
----------------
+Portaudio
+---------
1. Make sure ALSA development support (libasound and headers) is
present. Portaudio will work with OSS but I found I couldn't
sudo apt-get install libasound-dev
Note I had problems with the ALSA development library on Ubuntu
- 9.10, so used OSS andput up with not being able to adjust the mic
+ 9.10, so used OSS and put up with not being able to adjust the mic
gain.
2. Download and untar pa_stable_V19
possible to build fdmdv2 without "make install", by passing
--prefix to the ./configure stage.
-<<<<<<< .mine
-Build libsox
-------------
+libsox
+------
We use some of the internal sox functions for the equaliser feature.
sox-14.4.0$ make
-=======
-Build libctb (Communications Toolbox)
--------------------------------------
+libctb (Communications Toolbox)
+-------------------------------
$ wget https://iftools.com/download/ctb/0.16/libctb-0.16.tar.gz
$ tar xvzf libctb-0.16.tar.gz
build$ sudo cp ../include/ctb-0.16/kbhit.h /usr/local/include/ctb-0.16
build$ sudo ldconfig
->>>>>>> .r1094
-Build codec2-dev
-----------------
+codec2-dev
+----------
1. See codec2-dev/README. No need to "make install"
-Build fdmdv2
-------------
+fdmdv2
+------
1. svn co fdmdv2
+ level gauge?
[ ] release clean up
- [X] remove anything that doesn't work (menus, buttons) from GUI
- [X] about
- [X] src file credits
- [X] decide on web site
- + need edit by at least three of us
- [X] if you press start and headphones unplugged (ie one sound card missing), it
- shouldn't crash
- [X] hook up squelch
- [X] version number on GUI? How to connect SVN verev to version?
- [X] click tune and split
- [X] rm loopback buttons
-
- [ ] bug in record file on Win32
- [ ] svn version tag?
+ [X] bug in record file on Win32
+ [X] svn version tag?
+ i.e. 1.0 etc rather than number
[ ] waterfall
+ is graticule useful
[ ] record/play dialogs layout
[ ] remove/comment out debug printfs
[ ] Credits: Mel, Tapr, Bruce, Peter M, cesco, Dave W
- [ ] rig control
- [ ] data feature
- [ ] always on top option
[ ] linux version
-
[ ] help about with URL (hyperlink?) to web site
[ ] do we keep/put effort into getting working ./configure && Makefile?
- [-] test with simulated AWGN/burst error channels
+ [ ] test with simulated AWGN/burst error channels
+ see if sync needs tuning to not fall over too quickly
+ nasty noises
[ ] buffer sizes, maybe make a config number
[ ] read comments and make sure they are still valid
[ ] tool tip help for audio config dialog
[ ] something sensible with disabling rx when tx button is pressed?
- [ ] wire up level guage
- + I think it has relevance for analog speech, demod can handle wide input ranges
[ ] tx/rx muting for half duplex
+ dont want funny sounds during tx
[ ] setup doc
#
# $ make -f Makefile.linux
-WX_GTK_PATH=/home/david/Desktop/wxWidgets-2.9.4/build_gtk
-CODEC2_PATH=/home/david/codec2-dev
-SOX_LIB_PATH=/home/david/tmp/sox-14.4.0/src/.libs
+# EDIT THESE FOR YOUR SYSTEM ----------------------------
+
+WX_GTK_PATH=$(HOME)/wxWidgets-2.9.4/build_gtk
+CODEC2_PATH=$(HOME)/codec2-dev
+SOX_LIB_PATH=$(HOME)/sox-14.4.0/src/.libs
+
+# END EDITS ---------------------------------------------
WX_CONFIG=$(WX_GTK_PATH)/wx-config
WX_CPPFLAGS = $(shell $(WX_CONFIG) --cxxflags)
SOX_LIB=$(SOX_LIB_PATH)/libsox.a
CPP_FLAGS = $(WX_CPPFLAGS) $(CODEC2_INC) -I. -g -Wall -O3 -DSVN_REVISION=\"$(SVN_REVISION)\" -DFREEDV_VERSION="\"$(FREEDV_VERSION)"\"
-LIBS = $(WX_LIBS) $(CODEC2_LIB) -lm -lportaudiocpp -lpthread -lsndfile /usr/lib/libsamplerate.so.0 -lctb-0.16 $(SOX_LIB)
+LIBS = $(WX_LIBS) $(CODEC2_LIB) -lm -lportaudiocpp -lpthread -lsndfile -lsamplerate -Wl,-Bstatic -lctb-0.16 -Wl,-Bdynamic $(SOX_LIB)
OBJS = topFrame.o \
fdmdv2_main.o \
freedv: $(OBJS)
g++ -o freedv $(OBJS) $(CPP_FLAGS) $(LIBS)
-%.o: %.cpp $(HDRS) Makefile.linux
+%.o: %.cpp $(HDRS)
g++ $(CPP_FLAGS) -c $< -o $@
clean:
n8k = resample(cbData->insrc1, in8k_short, in48k_short, FS, g_soundCard1SampleRate, N8, nsam);
- // optionally save signal from radio (demod input to file).
- // Really useful for testing and development as it allows to
- // develop using off air signals
+ // optionally save "from radio" signal (write demod input to file)
+ // Really useful for testing and development as it allows us
+ // to repeat tests using off air signals
g_mutexProtectingCallbackData.Lock();
if (g_recFileFromRadio && (g_sfRecFile != NULL)) {
}
g_mutexProtectingCallbackData.Unlock();
- // optionally read signal from radio (file to demod input).
- // Really useful for testing and development as it allows to
- // develop using off air signals
+ // optionally read "from radio" signal from file (read demod input from file)
g_mutexProtectingCallbackData.Lock();
if (g_playFileFromRadio && (g_sfPlayFileFromRadio != NULL)) {
per_frame_rx_processing(cbData->rxoutfifo, g_CodecBits, cbData->rxinfifo, &g_nRxIn, &g_State, g_pCodec2);
- // if demod out of sync or we are in analog mode just pass thru
- // audio so we can hear SSB radio output as an aid to tuning
+ // Get some audio to send to headphones/speaker. If out of
+ // sync or in analog mode we pass thru the "from radio" audio
+ // to the headphones/speaker. When out of sync it's useful to
+ // hear the audio from the channel, e.g. as a tuning aid
- if ((g_State == 0) || g_analog)
+ if ((g_State == 0) || g_analog) {
memcpy(out8k_short, in8k_short, sizeof(short)*n8k);
+ }
else {
+ // we are in sync so use decoded audio
memset(out8k_short, 0, sizeof(short)*N8);
fifo_read(cbData->rxoutfifo, out8k_short, N8);
}
}
g_mutexProtectingCallbackData.Unlock();
- if (g_SquelchActive && (g_SquelchLevel > g_snr)) {
+ // note squelch automatically disabled in analog mode
+
+ if (g_SquelchActive && (g_SquelchLevel > g_snr) && !g_analog) {
//printf("g_SquelchLevel: %f g_snr: %f\n", g_SquelchLevel, g_snr);
memset(out8k_short, 0, sizeof(short)*N8);
}
if (g_nSoundCards == 2 ) {
- // Make sure we have at least 2 frames of modulator output
- // samples. This locks the modulator to the sample
- // rate of sound card 1. We want to make sure that modulator
+ // Make sure we have at least 6 frames of modulator output
+ // samples. This also locks the modulator to the sample rate
+ // of sound card 1. We want to make sure that modulator
// samples are uninterrupted by differences in sample rate
// between this sound card and sound card 2.
nout = resample(cbData->insrc2, in8k_short, in48k_short, FS, g_soundCard2SampleRate, 2*N8, nsam);
// optionally use file for mic input signal
+
g_mutexProtectingCallbackData.Lock();
if (g_playFileToMicIn && (g_sfPlayFile != NULL)) {
int n = sf_read_short(g_sfPlayFile, in8k_short, nout);
}
g_mutexProtectingCallbackData.Unlock();
- // Opional Mic In EQ Filtering, need mutex as filter can change at run time
+ // Optional Mic In EQ Filtering, need mutex as filter can change at run time
+
g_mutexProtectingCallbackData.Lock();
if (cbData->micInEQEnable) {
sox_biquad_filter(cbData->sbqMicInBass, in8k_short, in8k_short, nout);
resample_for_plot(g_plotSpeechInFifo, in8k_short, nout);
- if (g_analog)
- memcpy(out8k_short, in8k_short, 2*N8*sizeof(short));
+ if (g_analog) {
+
+ // Boost the "from mic" -> "to radio" audio in analog
+ // mode. The need for the gain was found by
+ // experiment - analog SSB sounded too quiet compared
+ // to digital. With digital voice we generally drive
+ // the "to radio" (SSB radio mic input) at about 25%
+ // of the peak level for normal SSB voice. So we
+ // introduce 6dB gain to make analog SSB sound the
+ // same level as the digital. Watch out for clipping.
+
+ for(int i=0; i<2*N8; i++) {
+ float out = (float)in8k_short[i]*2.0;
+ if (out > 32767) out = 32767.0;
+ if (out < -32767) out = -32767.0;
+ out8k_short[i] = out;
+ }
+ }
else
per_frame_tx_processing(out8k_short, in8k_short, g_pCodec2);
// update min and max amplitude estimates
float max_mag = MIN_MAG_DB;
- for(int i=0; i<FDMDV_NSPEC; i++) {
+
+ int min_fft_bin=((float)200/FDMDV_MAX_F_HZ)*FDMDV_NSPEC;
+ int max_fft_bin=((float)2800/FDMDV_MAX_F_HZ)*FDMDV_NSPEC;
+
+ for(int i=min_fft_bin; i<max_fft_bin; i++) {
if (g_avmag[i] > max_mag)
max_mag = g_avmag[i];
}
+
m_max_mag = BETA*m_max_mag + (1 - BETA)*max_mag;
m_min_mag = max_mag - 20.0;
//printf("max_mag: %f m_max_mag: %f\n", max_mag, m_max_mag);
//intensity_per_dB = (float)256 /(MAX_MAG_DB - MIN_MAG_DB);
intensity_per_dB = (float)256 /(m_max_mag - m_min_mag);
- spec_index_per_px = ((float)MAX_F_HZ/(float)FDMDV_MAX_F_HZ)*(float)FDMDV_NSPEC / (float) m_rGrid.GetWidth();
+ spec_index_per_px = ((float)(MAX_F_HZ)/(float)FDMDV_MAX_F_HZ)*(float)FDMDV_NSPEC / (float) m_rGrid.GetWidth();
/*
printf("h %d w %d px_per_sec %d dy %d dy_blocks %d spec_index_per_px: %f\n",
p.Blue() = intensity;
break;
case 2:
- if (intensity > 250) {
- p.Red() = intensity;
- p.Green() = intensity;
- p.Blue() = intensity;
- }
- else {
- p.Red() = 0;
- p.Green() = 0;
- p.Blue() = intensity;
- }
-
+ p.Red() = intensity;
+ p.Green() = intensity;
+ if (intensity < 127)
+ p.Blue() = intensity*2;
+ else
+ p.Blue() = 255;
+
break;
}
++p;
projects / freetel-svn-tracking.git / commitdiff