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VERSION := 173
CXXFLAGS = -Wall -O3 -std=c++0x -Wno-write-strings -Wno-narrowing -DDRIVER_SERIAL=$(VERSION) $(RASPI)
LDFLAGS = -lpthread -lrt -lm -liio -lliquid -lad9361 -lfftw3 -lfftw3_threads -lsndfile -lasound -lsoundio -lgpiod
OBJ = qo100trx.o rx.o tx.o fft.o\
kmlib/kmtimer.o kmlib/km_helper.o kmlib/kmfifo.o kmlib/rotary.o\
udp/udp.o\
liquid/liquiddrv.o liquid/liquiddrv_modulator.o\
pluto/pluto_finder.o pluto/pluto_driver.o pluto/pluto_setup.o pluto/pluto_run.o\
libkmaudio/libkmaudio_fifo.o libkmaudio/libkmaudio_getDevices.o libkmaudio/libkmaudio_getDevices_Linux.o\
libkmaudio/libkmaudio_init.o libkmaudio/libkmaudio_init_linux.o libkmaudio/libkmaudio_interface.o libkmaudio/libkmaudio_capture_linux.o\
libkmaudio/libkmaudio_playback_linux.o libkmaudio/libkmaudio_resampler.o
default: $(OBJ)
g++ $(CXXFLAGS) -o Release/trxdriver $(OBJ) $(LDFLAGS)
echo $(VERSION) > version.txt
rm -rf Release/*.config Release/*.pdb
chmod 755 Release/startQO100trx
clean:
rm -rf *.o
rm -rf kmlib/*.o
rm -rf pluto/*.o
rm -rf udp/*.o
rm -rf liquid/*.o
rm -rf libkmaudio/*.o
rm -rf Release/trxdriver

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# QO100_Transceiver
QO-100 Software Transceiver using an Adalm-Pluto and an SBC (Raspberry, Odroid ...), also works on Linux-Desktop PCs
This project is a fully functional software based transceiver for QO-100
Version Status:\
V1.0 ... May, 28 2021 ... Now fully working, Setup via Setup Menu.\
V1.1 ... May, 31 2021 ... Pluto USB/ETH setup, speech compressor\
V1.2 ... June, 2 2021 ... Audio Filter, Muting, new user interface\
V1.4 ... June, 6 2021 ... calibration for Pluto and LNB\
V1.5 ... June,11 2021 ... Major Upgrade (!) PLEASE CHECK YOUR SETUP (frequencies have been changed)\
V1.6 ... June,12 2021 ... various bug fixes (Sound card name, now working on 64bit Raspi)\
V1.63 .. June,16 2021 ... new settings: Pluto TX power, Screen Size\
V1.64 .. June,17 2021 ... many more Screen Sizes, new languages\
V1.66 .. June,25 2021 ... cleanup in the GUI, new RX/TX QRG settings, now usable also by touch screens. Stores RX-to-TX offset.\
V1.67 .. June,28 2021 ... first version which officially runs on Rapberry PI-3B+ (choose smaller screen size i.e. 1024x768, and disable beacon lock (important !) the lock symbol must show "FREE"). Also works on Orange PC+. \
V1.67 .. July,19 2021 ... Install files updated\
V1.68 .. July,26 2021 ... PTT control implemented, needs F5OEO firmware 2021 or later (version from 2019 does not work ! Pluto Rev.C needs also a patch)\
V1.69 ...August, 9 2021 ... rotary enocder for raspberry (frequency and RX volume), details see documentation\
V1.70 ...August, 23 2021 ... new screen size 1600x1050, 800Hz Test Tone (see left buttons), PTT output (and input), Mute input on Raspi GPIO, changes in installation scripts\
V1.71 ...September, 14 2021 ... HF-Loop corrected, Level (dB) display, Auto-QSO-Sync (see Setup), Microphone TX levels modified to avoid splatter\
V1.72 ...September, 18 2021 ... new AUDIO menu, new AGC, allows full output even with weak microphones\
January 13, 2022 ... modified installation procedure to get it running on raspberry OS "bullseye"\
V1.73 ...April, 2 2022 ... when restarting: uses last RX/TX qrg. This makes it easier to continue a QSO if the software was stopped or crashed.\
V1.73a...November, 16 2022 ... extended the install script for the ubuntu version vanessa. The TRX is the same as 1.73, just the installation has been extended.\
![alt text](https://github.com/dj0abr/QO100_Transceiver/blob/main/trxGui/Properties/sampleGUI.png)
## Hardware requirements
* Pluto SDR (connected via USB or Eth/USB Adapter)
* SBC like Raspberry PI-4, Odroid C4, Odroid N2 or Desktop-PC (Debuian based, Ubuntu, Mint...) and many others
* USB sound stick (if the SBC does not have a microphone connector)
* Satellite-Dish, QO-100 Feed and 2,4 GHz Amplifier (i.e. Amsat-DL 46dB Amp)
## Documentation
this software was developed for Amsat-DL. You can find the detailed documentation in the Amsat-Wiki:
http://wiki.amsat-dl.org/doku.php?id=en:plutotrx:overview
## Installation
The complete installation (and upgrading) is done by one single install file:
https://raw.githubusercontent.com/dj0abr/QO100_Transceiver/main/install
(no need to clone this github project, all is done automatically by this install file)
open a terminal and run these commands:
```
wget https://raw.githubusercontent.com/dj0abr/QO100_Transceiver/main/install
chmod 755 install
./install
```
that's all. There is nothing more to do than to run this install file.
The install script was made for debian/ubuntu based Linux systems. If you are using another system then please do these steps manually:
* clone this project
* in the script QO100_Transceiver/sctipts/prepare_ubuntu_pluto look for the installation of several libraries and install them for your OS.
* Install the latest version of the mono project (see prepare_mono as an example)
* make clean and make the transceiver software
## run the software
the software has two parts:
trxdriver .... this is the part doing all the work, without the GUI\
trxGui.exe ... the user interface
After installation both files are located in the folder\
.../QO100_Transceiver/Release
Additionally a start script was created
* start the software by entering: ./startQO100trx
this opens the user interface and automatically starts the background jobs
## configuration
click the SETUP button
* enter how the pluto is connected
* choose the sound device where microphone and loud speaker are connected
* enter the correct RX and TX frequencies. See the examples on the screen.
#### Audio on Raspberry PI OS:
Raspi OS shows many many audio devices nobody really needs.\
It is highly recommended to choose Pulseaudio for loudspeaker and microphone and then use the sound mixer pavucontrol (is installed) to select devices and control volume.
## Linux OS issues
In general this software runs on all linux distributions.
The script prepare_ubuntu_pluto contains the installation for all required libraries.
But different distributions may use different names for their libraries. The script was developed for Ubuntu based systems, like Ubuntu, Mint, Raspbery-OS and many others.
If you try to run prepare_ubuntu_pluto on different platforms like Suse, Fedora... you maybe need to change the name of some libraries.

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(fftw-3.3.10 fftw_wisdom #x3c273403 #x192df114 #x4d08727c #xe98e9b9d
(fftw_codelet_t1fv_4_avx 1 #x11bdd #x11bdd #x0 #x3faffd6c #x36c48939 #x2b89344c #x07d800dd)
(fftw_codelet_t2fv_20_avx 0 #x11bdd #x11bdd #x0 #x587c66c4 #x4f76fdef #xceb21d82 #xa0de1395)
(fftw_codelet_t2fv_25_sse2 1 #x11bdd #x11bdd #x0 #x5ecdb41b #x076a3fa6 #x4b08f138 #x4d35e39a)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x437baa88 #x22931f52 #xd4baa3df #x89d10f69)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x4cd32709 #xcef8290a #x90af32c9 #xefa6f35c)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #xfd422625 #x3b710790 #xb20b63af #x07bc3484)
(fftw_codelet_t1fv_5_avx 0 #x11bdd #x11bdd #x0 #xd9f832de #xb911c57e #xb0878a3f #x59d43138)
(fftw_codelet_n1fv_20_avx 0 #x11bdd #x11bdd #x0 #xdc55ecc0 #x01886d93 #x75a23ccf #x95afb0b0)
(fftw_codelet_n1fv_14_avx 0 #x11bdd #x11bdd #x0 #xc521610b #x38693a8a #x5257754a #xcc97d2ef)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x6c8cc274 #xb6b23efe #x536976d9 #xba7dfb58)
(fftw_codelet_t1fv_16_sse2 1 #x11bdd #x11bdd #x0 #x0356ef58 #xd4323bdf #xbb447b08 #x9e812fce)
)

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(fftw-3.3.10 fftw_wisdom #x3c273403 #x192df114 #x4d08727c #xe98e9b9d
(fftw_codelet_n1fv_14_avx 0 #x11bdd #x11bdd #x0 #xc521610b #x38693a8a #x5257754a #xcc97d2ef)
(fftw_codelet_t2fv_20_avx 0 #x11bdd #x11bdd #x0 #x587c66c4 #x4f76fdef #xceb21d82 #xa0de1395)
(fftw_codelet_t1fv_5_avx 0 #x11bdd #x11bdd #x0 #xd9f832de #xb911c57e #xb0878a3f #x59d43138)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x6c8cc274 #xb6b23efe #x536976d9 #xba7dfb58)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #xfd422625 #x3b710790 #xb20b63af #x07bc3484)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x437baa88 #x22931f52 #xd4baa3df #x89d10f69)
(fftw_codelet_t1fv_16_sse2 1 #x11bdd #x11bdd #x0 #x0356ef58 #xd4323bdf #xbb447b08 #x9e812fce)
)

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export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib:/usr/local/lib/arm-linux-gnueabihf
mono qo100trx.exe

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/*
* Adalm Pluto Driver
* ==================
* Author: DJ0ABR
*
* (c) DJ0ABR
* www.dj0abr.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* =========================
* FFT for Spectrum/Waterfall
* =========================
*
*/
#include "qo100trx.h"
#include <fftw3.h>
void fftinit();
void calc_fft(uint8_t *data, int len);
void findSignal(uint16_t *p16, int anz);
void* fft_threadfunction(void* param);
void init_fft()
{
fftinit();
pthread_t fftthread;
pthread_create(&fftthread, NULL, fft_threadfunction, NULL);
}
void* fft_threadfunction(void* param)
{
int ph = 0;
pthread_detach(pthread_self());
printf("entering FFT loop, *** PID:%ld ***\n",syscall(SYS_gettid));
while(keeprunning)
{
uint8_t data[PLUTOBUFSIZE*4];
if(read_fifo(FFTfifo, data, PLUTOBUFSIZE*4))
{
if(++ph >= 2) // uncomment to reduce cpu load
{
ph=0;
calc_fft(data, PLUTOBUFSIZE*4);
}
}
usleep(1000);
}
printf("exit FFT loop\n");
pthread_exit(NULL); // self terminate this thread
return NULL;
}
fftw_complex *din = NULL;
fftw_complex *cpout = NULL;
fftw_plan plan = NULL;
#define FFT_RESOLUTION 25 // Hz per bin
#define FFT_LENGTH (SAMPRATE / FFT_RESOLUTION) // 560kS/s / 25 = 22400
void fftinit()
{
int numofcpus = sysconf(_SC_NPROCESSORS_ONLN); // Get the number of logical CPUs.
if(numofcpus > 1)
{
printf("found %d cores, running FFT in multithreading mode\n",numofcpus);
fftw_init_threads();
fftw_plan_with_nthreads(numofcpus);
}
fftw_import_wisdom_from_filename("fftcfg");
din = (fftw_complex *)fftw_malloc(sizeof(fftw_complex) * FFT_LENGTH);
cpout = (fftw_complex *)fftw_malloc(sizeof(fftw_complex) * FFT_LENGTH);
plan = fftw_plan_dft_1d(FFT_LENGTH, din, cpout, FFTW_FORWARD, FFTW_MEASURE);
fftw_export_wisdom_to_filename("fftcfg");
printf("fft init ok\n");
}
void close_fft()
{
if(din) fftw_free(din);
din = NULL;
if(cpout) fftw_free(cpout);
cpout = NULL;
}
// convert a frequency offset (starting at ,470 and the kHz part only) to the bin index
int FreqToBinIdx(int freq)
{
// bins: 0.. 22400
// freq: 0..560000
return freq * 224 / 5600;
}
void calc_fft(uint8_t *data, int len)
{
static int din_idx = 0;
double real, imag;
// values for small WF, calculate only once per loop
int span = FFT_RESOLUTION*1120; // size of small waterfall in Hz (28000Hz, +/-14kHz)
int start = FreqToBinIdx(RXoffsetfreq - span/2);
int end = FreqToBinIdx(RXoffsetfreq + span/2);
// bin position of RX signal at 0.2-2.8kHz above RXoffsetfreq
int qsostart = FreqToBinIdx(RXoffsetfreq + 200);
int qsoend = FreqToBinIdx(RXoffsetfreq + 2800);
for(int i=0; i<len; i+=4)
{
// convert Pluto samples to fftw3 complex samples
int16_t xi = data[i+1];
xi <<= 8;
xi += data[i];
int16_t xq = data[i+3];
xq <<= 8;
xq += data[i+2];
din[din_idx][0] = (double)xi;
din[din_idx][1] = (double)xq;
din_idx++;
if(din_idx >= FFT_LENGTH)
{
din_idx = 0;
// if fftspeed > 0 then ignore every n fft line
// this helps to run this software on slow SBCs
static int fdel = 0;
if(fdel++ < fftspeed) continue;
fdel = 0;
// the fft input buffer is full, now lets execute the fft
fftw_execute(plan);
// the FFT delivers FFT_LENGTH values (44800 bins)
// but we only use the first half of them, which is the full range with the
// requested resolution of 25 Hz per bin (22400 bins)
int numbins = FFT_LENGTH; // 22400 (22400*25=560k)
// the FFT generates the upper half folloed by the lower half
// the tuned freq is in the center
// range centerfreq(,750) - 560k/2 to +560k/2
// is ,470 ... 1,030
float bin[numbins];
int binidx = 0;
// lower half
for(int i=numbins/2; i<numbins; i++)
{
real = cpout[i][0];
imag = cpout[i][1];
// calc magnitude
double v = sqrt((real * real) + (imag * imag));
// convert to dB scale
if(v <=0) v=0.01;
bin[binidx] = log(v);
bin[binidx] *= 1000;
if(bin[binidx] > 32768) printf("reduce multiplicator %f\n",bin[binidx]);
binidx++;
}
// upper half
for(int i=0; i<numbins/2; i++)
{
real = cpout[i][0];
imag = cpout[i][1];
// calc magnitude
double v = sqrt((real * real) + (imag * imag));
// convert to dB scale
if(v <=0) v=0.01;
bin[binidx] = log(v);
bin[binidx] *= 1000;
if(bin[binidx] > 32768) printf("reduce multiplicator %f\n",bin[binidx]);
binidx++;
}
// bins are in the range 0..32767 (16 bit)
// ======== noise level ==========
// measure the noise level on freq: ,475 to ,490 MHz, just below the lower beacon
// ,470 is index 0, steps 25 Hz
// ,475 is index 200 and ,490 is index 800
// so we calc the mid value if this range
float gval = 0;
float maxgval = 0;
int gstart = FreqToBinIdx(485000 - 470000);
int gend = FreqToBinIdx(495000 - 470000);
// mean noise level
for(int g=gstart; g<gend; g++)
gval += bin[g];
gval /= (gend-gstart);
// max noise level
for(int g=gstart; g<gend; g++)
if(bin[g] > maxgval) maxgval = bin[g];
// bring down a little, looks nicer
gval = gval * 100 / 99;
// and make the mid value over 10 values
#define GMIDLEN 10
static float gmid[GMIDLEN];
static int gmididx = 0;
gmid[gmididx] = gval;
if(++gmididx >= GMIDLEN) gmididx = 0;
float gvalmid = 0;
for(int g=0; g<GMIDLEN; g++)
gvalmid += gmid[g];
gvalmid /= GMIDLEN;
uint32_t gvalmid_u = (uint32_t)gvalmid;
uint32_t gvalmax_u = (uint32_t)maxgval;
// ======== beacon level ==========
// measure the max beacon level of BPSK beacon
// max of 749 - 751
float mval = 0;
int mstart = FreqToBinIdx(749000 - 470000);
int mend = FreqToBinIdx(751000 - 470000);
for(int m=mstart; m<mend; m++)
if(bin[m] > mval) mval = bin[m];
// and make the mid value over 10 values
#define MMIDLEN 10
static float mmid[MMIDLEN];
static int mmididx = 0;
mmid[mmididx] = mval;
if(++mmididx >= MMIDLEN) mmididx = 0;
float mvalmid = 0;
for(int m=0; m<MMIDLEN; m++)
mvalmid += mmid[m];
mvalmid /= MMIDLEN;
uint32_t mvalmid_u = (uint32_t)mvalmid;
// ======== QSO: measure max audio level 0-3kHz ==========
float qmval = 0;
for(int m=qsostart; m<qsoend; m++)
if(bin[m] > qmval) qmval = bin[m];
uint32_t qmvalmid_u = (uint32_t)qmval; //qmvalmid;
// ======= QSO level above noise max level =======
float qdlev = qmval - (maxgval + gvalmid)/2;
// and make the mean value
#define DIFFMIDLEN 50
static float diffmid[DIFFMIDLEN];
static int diffmididx = 0;
diffmid[diffmididx] = qdlev;
if(++diffmididx >= DIFFMIDLEN) diffmididx = 0;
float diffvalmid = 0;
for(int m=0; m<DIFFMIDLEN; m++)
diffvalmid += diffmid[m];
diffvalmid /= DIFFMIDLEN;
uint32_t diffvalmid_u = (uint32_t)diffvalmid;
uint8_t levels[22];
levels[0] = 5;
levels[1] = gvalmid_u >> 24;
levels[2] = gvalmid_u >> 16;
levels[3] = gvalmid_u >> 8;
levels[4] = gvalmid_u & 0xff;
levels[5] = mvalmid_u >> 24;
levels[6] = mvalmid_u >> 16;
levels[7] = mvalmid_u >> 8;
levels[8] = mvalmid_u & 0xff;
levels[9] = qmvalmid_u >> 24;
levels[10] = qmvalmid_u >> 16;
levels[11] = qmvalmid_u >> 8;
levels[12] = qmvalmid_u & 0xff;
levels[13] = gvalmax_u >> 24;
levels[14] = gvalmax_u >> 16;
levels[15] = gvalmax_u >> 8;
levels[16] = gvalmax_u & 0xff;
levels[17] = diffvalmid_u >> 24;
levels[18] = diffvalmid_u >> 16;
levels[19] = diffvalmid_u >> 8;
levels[20] = diffvalmid_u & 0xff;
levels[21] = ptt;
sendUDP(gui_ip, GUI_UDPPORT, levels, 22);
// ======== BIG Waterfall ========
// the big waterfall has a screen resulution of 1120 pixel
// FFT_RESOLUTION=25 Hz/bin
// the FFT delivers 1,12MS/s / 25 / 2 = 22400 values
// so the BIG WF resolution is 22400 / 1120 = 20
static const int bigres = numbins / 1120;
static const int midlen = 15;
static uint32_t bigmid[midlen][FFT_LENGTH];
static int bmididx = 0;
int didx = 0;
for(int i=0; i<numbins; i+=bigres)
{
float max = 0;
for(int j=0; j<bigres; j++)
{
float fbin = bin[i+j];
if(fbin > max) max = fbin;
}
bigmid[bmididx][didx++] = (uint32_t)max;
if(max > 32768) printf("16bit overflow %f\n",max);
}
uint8_t bigline[1 + 2 * (numbins/bigres)];
uint8_t biglineraw[1 + 2 * (numbins/bigres)];
int bigidx = 0;
bigline[bigidx] = 0; // ID for big spectrum
biglineraw[bigidx] = 2; // ID for big waterfall
bigidx++;
for(int i=0; i<(numbins/bigres); i++)
{
uint32_t uv = 0;
for(int j=0; j<midlen; j++)
uv += bigmid[j][i];
uv /= midlen;
if((bmididx+1) >= (int)sizeof(biglineraw))
printf("+++++++++++++++++++++++ %d %d\n",bmididx, numbins/bigres);
biglineraw[bigidx] = bigmid[bmididx][i] >> 8;
biglineraw[bigidx+1] = bigmid[bmididx][i] & 0xff;
bigline[bigidx] = uv >> 8;
bigline[bigidx+1] = uv & 0xff;
bigidx+=2;
}
if(++bmididx >= midlen) bmididx = 0;
// send the big fft bins to the GUI
// raw values, no mid val, for waterfall
sendUDP(gui_ip, GUI_UDPPORT, biglineraw, bigidx);
// send the big fft bins to the GUI
// mid vals for spectrum
sendUDP(gui_ip, GUI_UDPPORT, bigline, bigidx);
// ======== SMALL Waterfall ========
// the small waterfall is a piece of some kHz around the mid RX frequency "RXoffsetfreq"
// RXoffsetfreq is in kHz above the left margin which is 750-280= 470k
// the bin-index of RXoffsetfreq is: RXoffsetfreq/10
static const int small_midlen = 15;
static uint32_t smallmid[small_midlen][FFT_LENGTH];
static int smididx = 0;
for(int i=start; i<end; i++)
{
if(i>=0 && i<FFT_LENGTH)
smallmid[smididx][i] = (uint32_t)bin[i];
}
uint8_t smallline[1+(end-start)*2];
uint8_t smalllineraw[1+(end-start)*2];
int smallidx = 0;
smallline[smallidx] = 1; // ID for small waterfall
smalllineraw[smallidx] = 3; // ID for small waterfall
smallidx++;
for(int i=start; i<end; i++)
{
uint32_t uv = 0;
if(i>=0 && i<FFT_LENGTH)
{
for(int j=0; j<small_midlen; j++)
uv = uv + smallmid[j][i]+smallmid[j][i-1]+smallmid[j][i+1];
uv /= (small_midlen*3);
if((smallidx+1) >= (int)sizeof(smalllineraw)) printf("*********************** %d %d %d\n",smallidx, start,end);
smalllineraw[smallidx] = smallmid[smididx][i] >> 8;
smalllineraw[smallidx+1] = smallmid[smididx][i] & 0xff;
smallline[smallidx] = uv >> 8;
smallline[smallidx+1] = uv & 0xff;
}
else
{
smalllineraw[smallidx] = 0;
smalllineraw[smallidx+1] = 0;
smallline[smallidx] = 0;
smallline[smallidx+1] = 0;
}
smallidx += 2;
}
if(++smididx >= small_midlen) smididx = 0;
findSignal((uint16_t *)smallline,smallidx/2);
// send the small fft bins to the GUI
sendUDP(gui_ip, GUI_UDPPORT, smalllineraw, smallidx);
// send the small fft bins to the GUI
sendUDP(gui_ip, GUI_UDPPORT, smallline, smallidx);
}
}
}
#define SRCHANZ 20
int srch[SRCHANZ];
int srchpos = 0;
void findSignal(uint16_t *p16, int anz)
{
// measure frequency of a signal within +/-4kHz of the RXfrequency
int st12 = (14000-6000)*1120/28000; // -4kHz
int en12 = (14000+6000)*1120/28000; // +4kHz
uint32_t mv16=0;
// measure mean value over 28 kHz
for(int i=0; i<anz; i++)
mv16 += p16[i];
mv16 /= anz;
// filter out the signal
uint16_t vt=100, vb=96; // level factors to filter
int filtval = 0;
int filtanz = 0;
for(int i=st12+1; i<en12-1; i++)
{
if( p16[i-1] > (mv16*vt/vb) &&
p16[i] > (mv16*vt/vb) &&
p16[i+1] > (mv16*vt/vb))
{
filtval += i;
filtanz++;
}
}
// calculate the mid frequency of the signal
if(filtanz > 0)
{
filtval /= filtanz;
int freq = filtval * 25 - 14000;
srch[srchpos] = freq;
if(++srchpos >= SRCHANZ) srchpos = 0;
// calculate a mean value of the found frequency
int srchmid = 0;
for(int i=0; i<SRCHANZ; i++)
srchmid += srch[i];
srchmid /= SRCHANZ;
if(srchpos == 0)
{
int korrfact = 1350 - srchmid;
//printf("%d, corr by: %d\n",srchmid,korrfact);
// send correction value to GUI
uint8_t cf[5];
cf[0] = 9;
cf[1] = korrfact >> 24;
cf[2] = korrfact >> 16;
cf[3] = korrfact >> 8;
cf[4] = korrfact & 0xff;
sendUDP(gui_ip, GUI_UDPPORT, cf, 5);
}
}
}

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35
fftcfg Normal file
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(fftw-3.3.8 fftw_wisdom #x3c273403 #x192df114 #x4d08727c #xe98e9b9d
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x35500318 #xa2053218 #x9432ec0f #x87073922)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x7f68e9fa #x7bad3d01 #x98dafd20 #xcdb6b7ce)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x3c7290dd #x1d739c0c #xa05436a1 #xf127d781)
(fftw_codelet_t1fv_7_avx 0 #x11bdd #x11bdd #x0 #x8730deaa #xb4423bfd #xf2c34131 #x945d59f7)
(fftw_codelet_n1fv_25_avx 0 #x11bdd #x11bdd #x0 #x10c82991 #xd13397bb #x911f3bcd #x9a0aac9d)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x73f2196a #xb7039b28 #x543344bd #xc5d57c2e)
(fftw_codelet_t1fuv_7_avx 0 #x11bdd #x11bdd #x0 #x91a3d5b1 #x71a7404e #x48b7e1ae #x9d253d8e)
(fftw_codelet_n1fv_14_avx 0 #x11bdd #x11bdd #x0 #xe6cf6c3f #xd07b6475 #x8d35d10b #xa15f720d)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x00e91bf9 #x18dbc270 #x1de439e6 #x1a48325e)
(fftw_codelet_t1fv_7_avx 0 #x11bdd #x11bdd #x0 #x94b1535d #x464eb909 #xbb1d6ae9 #xc97b824a)
(fftw_codelet_n1fv_25_avx 0 #x11bdd #x11bdd #x0 #x2aa7ed75 #xa9e5dff5 #x81285df6 #xe9ac14fa)
(fftw_codelet_t2fv_10_avx 0 #x11bdd #x11bdd #x0 #xb76f3788 #x7be6dae5 #xc3f94ec6 #x648cbd8e)
(fftw_codelet_t1fuv_10_avx 0 #x11bdd #x11bdd #x0 #x03171678 #xebaa405d #x03f48716 #x4140fb61)
(fftw_codelet_t2fv_10_avx 0 #x11bdd #x11bdd #x0 #x766ce6ab #x100d658e #xc75adcb3 #xfefbee0c)
(fftw_codelet_t3fv_16_avx 1 #x11bdd #x11bdd #x0 #x9dc31525 #xa7b2f94b #xac1cc9df #xaaa77f45)
(fftw_codelet_t1fv_64_avx 1 #x11bdd #x11bdd #x0 #x3550de6a #x2d8f363f #x24a26c56 #x1e578d59)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x9a6f97a3 #xd526ccb4 #xf3f9e9a6 #x810686ae)
(fftw_codelet_t1fv_32_avx 1 #x11bdd #x11bdd #x0 #x8048e739 #x6d9eef36 #x57776ea1 #x73b49435)
(fftw_codelet_t1fv_32_avx 1 #x11bdd #x11bdd #x0 #x27f49072 #x8acb2efd #xd50279ca #x457292fa)
(fftw_codelet_t1fv_7_avx 0 #x11bdd #x11bdd #x0 #xd9f832de #xb911c57e #xb0878a3f #x59d43138)
(fftw_codelet_t2fv_16_avx 1 #x11bdd #x11bdd #x0 #xd4d39737 #x36e690cf #x36d4c10c #x64f4ef7c)
(fftw_codelet_t2fv_10_avx 0 #x11bdd #x11bdd #x0 #x2c0ddf29 #x02d7f1b0 #x1f788f28 #x1c6eca0e)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x2ffc6c7e #x04642ea9 #xd059ca7e #xc3bf3501)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #xcd395e7b #x704347eb #x93fba7b1 #x1f8e8683)
(fftw_dft_thr_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x6f619c66 #xb9dcd1c8 #xc74e9a5c #x82ce38a4)
(fftw_codelet_n1fv_20_avx 0 #x11bdd #x11bdd #x0 #x3db87a70 #x7c5108ec #x2580e3b5 #xbf99f2dd)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x7f000442 #x58e4dd05 #xa3b6bd4b #x8e39c722)
(fftw_codelet_t1fuv_10_avx 0 #x11bdd #x11bdd #x0 #xccaa18a4 #x0ad043df #x96b3e0fb #xa29ecc39)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #xf66ff4c6 #x77e7b389 #x4a1777f4 #xa9d87b9f)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #xad5917a6 #xc3718057 #x519be636 #x6e895acb)
(fftw_codelet_t1fv_5_avx 0 #x11bdd #x11bdd #x0 #x28df877c #xf3587663 #x562a5896 #x1c47bd8e)
(fftw_dft_vrank_geq1_register 0 #x11bdd #x11bdd #x0 #x12559e03 #x58c96dec #x2a4ced70 #xb7d49335)
(fftw_codelet_n1fv_20_avx 0 #x11bdd #x11bdd #x0 #x936acb7d #xd96def60 #x5c99c8f9 #xa8f5af47)
)

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#!/bin/bash
echo "==== complete install QO100 Transceiver ===="
echo "full update, upgrade and installation"
set -e
cd ~
echo "update system by running apt-get update"
sudo apt-get update
echo "install git"
sudo apt-get install git -y
cd ~/QO100_Transceiver/scripts
./prepare_ubuntu_pluto
cd ~/QO100_Transceiver/scripts
./makeall
echo "==== Installation: OK ===="
cd ~/QO100_Transceiver/Release
echo "==== Start the Transceiver in the folder QO100_Transceiver/Release ===="
echo "==== by entering ./startQO100trx ===="

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/*
* Raspberry PI / Zero AddOn Board specially for Ham Radio Applications
* ====================================================================
* Author: DJ0ABR
*
* (c) DJ0ABR
* www.dj0abr.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
kmhelper.cpp
===========
useful functions
*
*/
#include "../qo100trx.h"
#include <pwd.h>
int keeprunning = 1; // set to 0 at program end to exit all processes
char configfile[512] = {0};
// check if it is already running
int isRunning(char *prgname)
{
int num = 0;
char s[256];
sprintf(s,"ps -e | grep %s",prgname);
FILE *fp = popen(s,"r");
if(fp)
{
// gets the output of the system command
while (fgets(s, sizeof(s)-1, fp) != NULL)
{
if(strstr(s,prgname) && !strstr(s,"grep"))
{
if(++num == 2)
{
printf("%s is already running, do not start twice !\n",prgname);
pclose(fp);
return 1;
}
}
}
pclose(fp);
}
return 0;
}
void (*sigfunc)();
// signal handler
void sighandler(int signum)
{
//printf("\n\nprogram stopped by signal\n");
(*sigfunc)();
}
void install_signal_handler(void (*signalfunction)())
{
sigfunc = signalfunction;
// signal handler, mainly used if the user presses Ctrl-C
struct sigaction sigact;
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGABRT, &sigact, NULL); // assert() error
//sigaction(SIGSEGV, &sigact, NULL);
// switch off signal 13 (broken pipe)
// instead handle the return value of the write or send function
signal(SIGPIPE, SIG_IGN);
}
void getParameters(int argc, char *argv[])
{
int opt;
while ((opt = getopt(argc, argv, "c:")) != -1)
{
switch (opt)
{
case 'c':
// specify config file name
if(optarg && strlen(optarg) > 2 && strlen(optarg) < (sizeof(configfile)-1))
{
strcpy(configfile,optarg);
}
else
{
printf("invalid Config File Parameter [-c Configfilename]: %s\n", optarg);
exit(0);
}
break;
}
}
}
// run external program and return it's output
char *runProgram(char *parameter, int maxlen)
{
//printf("run:<%s>\n",parameter);
FILE *fp = popen(parameter,"r");
if(fp)
{
*parameter = 0;
while (fgets(parameter+strlen(parameter), maxlen-1-strlen(parameter), fp) != NULL)
{
//printf("returns:<%s>\n", parameter);
}
pclose(fp);
return parameter;
}
else
printf("ERROR: cannot run: %s\n",parameter);
return NULL;
}
void showbitstring(char* title, uint8_t* data, int totallen, int anz)
{
printf("%s. len %d: ", title, totallen);
for (int i = 0; i < anz; i++)
printf("%01X ", data[i]);
printf("\n");
}
void showbytestring(char *title, uint8_t *data, int totallen, int anz)
{
printf("%s. len % 4d: ",title, totallen);
for(int i=0; i<anz; i++)
printf("%02X ",data[i]);
printf("\n");
}
void showbytestring16(char *title, uint16_t *data, int anz)
{
printf("%s. len %d: ",title,anz);
for(int i=0; i<anz; i++)
printf("%04X ",data[i]);
printf("\n");
}
void showbytestring32(char* title, uint32_t* data, int anz)
{
printf("%s. len %d: ", title, anz);
for (int i = 0; i < anz; i++)
printf("%08X ", data[i]);
printf("\n");
}
void showbytestringf(char* title, float* data, int totallen, int anz)
{
printf("%s. len %d: ", title, totallen);
for (int i = 0; i < anz; i++)
printf("%7.4f ", data[i]);
printf("\n");
}
// get own IP adress
char* ownIP()
{
static char ip[20] = { 0 };
struct ifaddrs* ifaddr, * ifa;
int s;
char host[NI_MAXHOST];
if (getifaddrs(&ifaddr) == -1)
{
printf("cannot read own IP address, getifaddrs faield. Check Networking\n");
return ip;
}
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next)
{
if (ifa->ifa_addr == NULL)
continue;
s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if (ifa->ifa_addr->sa_family == AF_INET)
{
if (s != 0)
{
printf("getnameinfo() failed: %s\n", gai_strerror(s));
printf("cannot read own IP address, getnameinfo failed: %s. Check Networking\n", gai_strerror(s));
break;
}
if (strncmp(host, "127", 3) != 0)
{
strcpy(ip, host);
break;
}
}
}
freeifaddrs(ifaddr);
return ip;
}
char* cleanStr(char *s)
{
if(s[0] > ' ')
{
// remove trailing crlf
for(size_t j=0; j<strlen(s); j++)
if(s[j] == '\n' || s[j] == '\r') s[j] = 0;
return s; // nothing to do
}
for(size_t i=0; i<strlen(s); i++)
{
if(s[i] >= '0')
{
// i is on first character
memmove(s,s+i,strlen(s)-i);
s[strlen(s)-i] = 0;
// remove trailing crlf
for(size_t j=0; j<strlen(s); j++)
if(s[j] == 'n' || s[j] == '\r') s[j] = 0;
return s;
}
}
return NULL; // no text found in string
}
char *getword(char *s, int idx)
{
if(idx == 0)
{
for(size_t i=0; i<strlen(s); i++)
{
if(s[i] < '0')
{
s[i] = 0;
return s;
}
}
return NULL;
}
for(size_t j=0; j<strlen(s); j++)
{
if(s[j] > ' ')
{
char *start = s+j;
for(size_t k=0; k<strlen(start); k++)
{
if(start[k] == ' ' || start[k] == '\r' || start[k] == '\n')
{
start[k] = 0;
return start;
}
}
return start;
}
}
return NULL;
}
// read the value of an element from the config file
// Format:
// # ... comment
// ElementName-space-ElementValue
// the returned value is a static string and must be copied somewhere else
// before this function can be called again
char *getConfigElement(char *elemname)
{
if(strlen(configfile) < 2) return NULL;
static char s[501];
int found = 0;
char fn[1024];
if(strlen(configfile) > 512)
{
printf("config file path+name too long: %s\n",configfile);
exit(0);
}
strcpy(fn,configfile);
if(fn[0] == '~')
{
struct passwd *pw = getpwuid(getuid());
const char *homedir = pw->pw_dir;
sprintf(fn,"%s%s",homedir,configfile+1);
}
//printf("read Configuration file %s\n",fn);
FILE *fr = fopen(fn,"rb");
if(!fr)
{
printf("!!! Configuration file %s not found !!!\n",fn);
exit(0);
}
while(1)
{
if(fgets(s,500,fr) == NULL) break;
// remove leading SPC or TAB
if(cleanStr(s) == 0) continue;
// check if its a comment
if(s[0] == '#') continue;
// get word on index
char *p = getword(s,0);
if(!p) break;
if(strcmp(p, elemname) == 0)
{
char val[500];
if(*(s+strlen(p)+1) == 0) continue;
p = getword(s+strlen(p)+1,1);
if(!p) break;
// replace , with .
char *pkomma = strchr(p,',');
if(pkomma) *pkomma = '.';
strcpy(val,p);
strcpy(s,val);
found = 1;
break;
}
}
fclose(fr);
if(found == 0) return NULL;
return s;
}
void getConfigElement_double(char *elemname, double *pv, double multiplier)
{
char *p = getConfigElement(elemname);
if(p) *pv = atof(p) * multiplier;
}
void getConfigElement_longlong(char *elemname, long long *pv, double multiplier)
{
char *p = getConfigElement(elemname);
if(p) *pv = (long long)(atof(p) * multiplier);
}
void getConfigElement_int(char *elemname, int *pv, double multiplier)
{
char *p = getConfigElement(elemname);
if(p) *pv = (int)(atof(p) * multiplier);
}
float measure_samplerate(int id, int samp, int prt)
{
static unsigned long lastus[10];
static unsigned long samples[10];
static int f[10];
static int cnt[10];
static int first=1;
if(first)
{
first = 0;
for(int i=0; i<10; i++)
{
f[i] = 1;
cnt[i] = 0;
}
}
// measure sample rate
struct timeval tv;
gettimeofday(&tv, NULL);
if(f[id])
{
f[id] = 0;
lastus[id] = tv.tv_sec * 1000000 + tv.tv_usec;
samples[id] = samp;
}
samples[id] += samp;
unsigned long tnow = tv.tv_sec * 1000000 + tv.tv_usec;
float sr = 0;
if(++(cnt[id]) >= prt)
{
cnt[id] = 0;
sr = (samples[id]*1e6)/(tnow - lastus[id]);
printf("%d: %.6f\n",id,sr/1e6);
}
return sr;
}
int measure_maxval(double v, int anz)
{
static double max = - 99999999;
static int cnt = 0;
v = fabs(v);
if(v > max)
{
max = v;
//printf("maxval: %f\n",max);
}
if(++cnt >= anz)
{
printf("maxval: %f\n",max);
max = - 99999999;
cnt = 0;
return 1;
}
return 0;
}

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <signal.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <ifaddrs.h>
#include <netdb.h>
int isRunning(char *prgname);
void install_signal_handler(void (*signalfunction)());
void showbitstring(char* title, uint8_t* data, int totallen, int anz);
void showbytestring(char *title, uint8_t *data, int totallen, int anz);
void showbytestring16(char *title, uint16_t *data, int anz);
void showbytestring32(char* title, uint32_t* data, int anz);
void showbytestringf(char* title, float* data, int totallen, int anz);
char* ownIP();
char *getConfigElement(char *elemname);
void getConfigElement_double(char *elemname, double *pv, double multiplier);
void getConfigElement_longlong(char *elemname, long long *pv, double multiplier);
void getConfigElement_int(char *elemname, int *pv, double multiplier);
float measure_samplerate(int id, int samp, int prt);
int measure_maxval(double v, int anz);
char *runProgram(char *parameter, int maxlen);
extern int keeprunning;

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/*
* Raspberry PI / Zero AddOn Board specially for Ham Radio Applications
* ====================================================================
* Author: DJ0ABR
*
* (c) DJ0ABR
* www.dj0abr.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* universal thread safe fifo, used by many drivers and applications
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <pthread.h>
#include "kmfifo.h"
FIFOOBJ fifo[MAXFIFOS];
int fifonum = 0;
#define LOCK(id) pthread_mutex_lock(&fifo[id].crit_sec)
#define UNLOCK(id) pthread_mutex_unlock(&fifo[id].crit_sec)
// creates a new fifo
// maxelem_num ... max. number of elements in fifo
// maxelem_len ... max. length of one element (shorter elements are allowed)
// returns: ID of a fifo object, to be used for fifo functions
int create_fifo(int maxelem_num, int maxelem_len)
{
// create the fifo memory and init variables
fifo[fifonum].fifomem = malloc(maxelem_num * maxelem_len);
fifo[fifonum].plen = (int *)malloc(maxelem_num * sizeof(int));
fifo[fifonum].maxelemlen =maxelem_len;
fifo[fifonum].maxelem = maxelem_num;
fifo[fifonum].rdidx = 0;
fifo[fifonum].wridx = 0;
pthread_mutex_init(&fifo[fifonum].crit_sec, NULL);
int id = fifonum;
fifonum++;
return id;
}
void destroy_fifos()
{
for(int i=0; i<fifonum; i++)
{
free(fifo[fifonum].fifomem);
free(fifo[fifonum].plen);
if (&fifo[fifonum].crit_sec != NULL) pthread_mutex_destroy(&fifo[fifonum].crit_sec);
}
}
// write into the fifo
// ignore data if the fifo is full
void write_fifo(int id, uint8_t *pdata, int len)
{
FIFOOBJ *pfo = &fifo[id];
if(len > pfo->maxelemlen)
{
printf("element too long\n");
return;
}
LOCK(id);
if (((pfo->wridx + 1) % pfo->maxelem) == pfo->rdidx)
{
printf("cannot WRITE fifo %d full\n",id);
UNLOCK(id);
return;
}
// insert length of new data
*(pfo->plen) = len; // real length of the element
// insert new data
void *dst = (void *)((uint8_t *)pfo->fifomem + pfo->wridx * pfo->maxelemlen);
memcpy(dst, pdata, len);
if(++pfo->wridx >= pfo->maxelem) pfo->wridx = 0;
UNLOCK(id);
}
// read from the fifo
// return: number of bytes read
int read_fifo(int id, uint8_t* pdata, int maxlen)
{
FIFOOBJ *pfo = &fifo[id];
LOCK(id);
if(pfo->rdidx == pfo->wridx)
{
// Fifo empty, no data available
//printf("read: no data\n");
UNLOCK(id);
return 0;
}
// read length
int len = *pfo->plen; // length of an element
if (len > maxlen)
{
printf("read_fifo: %d, pdata too small. Need:%d has:%d\n", id, len, maxlen);
return 0; // pdata too small
}
// read data
void *src = (void *)((uint8_t *)pfo->fifomem + pfo->rdidx * pfo->maxelemlen);
memcpy(pdata, src, len);
if (++pfo->rdidx >= pfo->maxelem) pfo->rdidx = 0;
UNLOCK(id);
return len;
}
void fifo_clear(int id)
{
fifo[id].wridx = fifo[id].rdidx = 0;
}
int fifo_freespace(int id)
{
int freebuf = 0;
LOCK(id);
int elemInFifo = (fifo[id].wridx + fifo[id].maxelem - fifo[id].rdidx) % fifo[id].maxelem;
freebuf = fifo[id].maxelem - elemInFifo;
UNLOCK(id);
return freebuf;
}
int fifo_dataavail(int id)
{
LOCK(id);
if (fifo[id].rdidx == fifo[id].wridx)
{
// Fifo empty, no data available
UNLOCK(id);
return 0;
}
UNLOCK(id);
return 1;
}
int fifo_usedspace(int id)
{
int us = fifo[id].maxelem - fifo_freespace(id);
return us;
}

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// max number of fifo, just a high number, never really used
#define MAXFIFOS 200
typedef struct _FIFOOBJ_ {
int maxelem;
int maxelemlen;
int rdidx;
int wridx;
void *fifomem;
int *plen; // real length of an element
pthread_mutex_t crit_sec;
} FIFOOBJ;
int create_fifo(int elem_num, int elem_len);
void destroy_fifos();
void write_fifo(int id, uint8_t *pdata, int len);
int read_fifo(int id, uint8_t* pdata, int maxlen);
void fifo_clear(int id);
int fifo_freespace(int id);
int fifo_dataavail(int id);
int fifo_usedspace(int id);

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/*
* Linux multithreaded timer
* =========================
* Author: DJ0ABR
*
* (c) DJ0ABR
* www.dj0abr.de
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Repeatable Timer for various needs
* ==================================
*
*/
#include "kmtimer.h"
/*
usage:
// this function is called every time_in_ms milliseconds
void timerhandler_function(void)
{
// called every time_in_ms
}
// start a new timer
int timernum = start_timer(time_in_ms, &timerhandler_function);
stop_timer(timernum);
*/
typedef struct _TIMERDEF_ {
int to_ms; // timeout value in ms
timer_t timerid;
void(*timer_func_handler_pntr)(void); // this user supplied function is called on timeout
struct itimerspec in, out;
} TIMERDEF;
#define MAXTIMERS 20
TIMERDEF timers[MAXTIMERS];
int timernum = 0;
// callback function. The timer number is in val.sival_int
void sighler (union sigval val)
{
int tnum = val.sival_int;
timers[tnum].timer_func_handler_pntr();
}
int start_timer(int mSec, void(*timer_func_handler)(void))
{
timers[timernum].timer_func_handler_pntr = timer_func_handler;
timers[timernum].to_ms = mSec;
pthread_attr_t attr;
pthread_attr_init( &attr );
struct sched_param parm;
parm.sched_priority = 255;
pthread_attr_setschedparam(&attr, &parm);
struct sigevent sig;
sig.sigev_notify = SIGEV_THREAD;
sig.sigev_notify_function = sighler;
sig.sigev_value.sival_int = timernum;
sig.sigev_notify_attributes = &attr;
int ret = timer_create(CLOCK_REALTIME, &sig, &(timers[timernum].timerid));
if (ret == 0)
{
timers[timernum].in.it_value.tv_sec = mSec / 1000;
timers[timernum].in.it_value.tv_nsec = (mSec % 1000) * 1000000;
timers[timernum].in.it_interval.tv_sec = mSec / 1000;
timers[timernum].in.it_interval.tv_nsec = (mSec % 1000) * 1000000;
ret = timer_settime(timers[timernum].timerid, 0, &timers[timernum].in, &timers[timernum].out);
if(ret == -1)
{
printf("timer_settime() failed with %d\n", errno);
return -1;
}
}
else
{
printf("timer_create() failed with %d\n", errno);
return -1;
}
int r = timernum;
timernum++;
return r;
}
void stop_timer(int timer)
{
timer_delete(timers[timer].timerid);
}

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#include <time.h>
#include <stdio.h>
#include <signal.h>
#include <pthread.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
int start_timer(int mSec, void(*timer_func_handler)(void));
void stop_timer(int timer);
void sleep_ms(int ms);

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/*
this is an extract from kmclib (see github, dj0abr repos)
it works on raspberry pi only
* Raspberry PI / Zero AddOn Board specially for Ham Radio Applications
* ====================================================================
* Author: DJ0ABR
*
* (c) DJ0ABR
* www.dj0abr.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
encoder.cpp
===========
function to handle rotary encoder
Usage:
======
initialize and assign ports to the encoders
-------------------------------------------
up to 3 encoders are supported, If not used, then assign port nunmber -1
init_rotencoder(int portA1, int portB1, int portA2, int portB2, int portA3, int portB3)
see gpio.h _INPUTS_ for valid port numbers
read encoder:
-------------
int getEncSteps(int idx)
idx ... encoder number 0,1 or 2
returns the number of steps since last read
*
*/
#include "../qo100trx.h"
int init_gpio();
int getPort(char *port);
#define NUM_OF_ENCODERS 2
pthread_mutex_t rotenc_crit_sec;
#define LOCK pthread_mutex_lock(&(rotenc_crit_sec))
#define UNLOCK pthread_mutex_unlock(&(rotenc_crit_sec))
void *rotencproc(void *);
char portA[NUM_OF_ENCODERS][3] = {"fa","va"};
char portB[NUM_OF_ENCODERS][3] = {"fb","vb"};
int encsteps[NUM_OF_ENCODERS];
pthread_t rotenc_tid;
// port numbers see gpio.h _INPORTS_
// -1 if not used
void init_rotencoder()
{
// use the rotary encoder on a raspberry board only
// RASPI is passed to the Makefile as: make RASPI='-DRASPI'
#ifndef RASPI
return;
#endif
if(init_gpio() == -1) return;
memset(&encsteps, 0, sizeof(int)*NUM_OF_ENCODERS);
int pret = pthread_create(&rotenc_tid,NULL,rotencproc, NULL);
if(pret)
{
printf("rotenc process NOT started\n");
exit(0);
}
}
int getEncSteps(int idx)
{
int v;
LOCK;
v = encsteps[idx];
encsteps[idx] = 0;
UNLOCK;
return v;
}
void *rotencproc(void *pdata)
{
pthread_detach(pthread_self());
printf("rotenc process started\n");
int aval[NUM_OF_ENCODERS];
int bval[NUM_OF_ENCODERS];
int oldaval[NUM_OF_ENCODERS]={0,0};
while(keeprunning)
{
for(int i=0; i<NUM_OF_ENCODERS; i++)
{
aval[i] = getPort(portA[i]);
bval[i] = getPort(portB[i]);
if(aval[i]==1 && oldaval[i]==0)
{
// falling edge of port A
int dir = -1;
if(bval[i] == 1) dir = 1;
LOCK;
encsteps[i] += dir;
UNLOCK;
}
oldaval[i] = aval[i];
}
usleep(100);
}
printf("exit rotenc thread\n");
pthread_exit(NULL);
}
// 0=RX, 1=TX, 2=just released, 3=just pressed
int test_ptt_gpio()
{
#ifndef RASPI
return -1;
#endif
static int gold = -1;
int ret = 0;
int ptt = getPort("p");
if(gold != -1)
{
if(ptt == 0)
{
// PTT is pressed
if(gold == 0) ret = 1;
else ret = 3;
}
else
{
// PTT is released
if(gold == 0) ret = 2;
else ret = 0;
}
}
gold = ptt;
return ret;
}
// 0=unmuted, 1=muted, 2=just unmuted, 3=just muted
int test_mute_gpio()
{
#ifndef RASPI
return -1;
#endif
static int gold = -1;
int ret = 0;
int mute = getPort("m");
if(gold != -1)
{
if(mute == 0)
{
// mute is pressed
if(gold == 0) ret = 1;
else ret = 3;
}
else
{
// mute is released
if(gold == 0) ret = 2;
else ret = 0;
}
}
gold = mute;
return ret;
}
/* ============= Linux GPIO interface =============
requires packages: gpiod libgpiod-dev
command line interface see:
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/tree/README
C-Functions see: /usr/include/gpiod.h
connect rotary encoders to these pins:
frequency-encoder A ... GPIO17 (Pin11)
frequency-encoder B ... GPIO27 (Pin13)
volume -encoder A ... GPIO4 (Pin 7)
volume -encoder B ... GPIO22 (Pin15)
PTT input ... GPIO18 (Pin12)
Mute ... GPIO23 (Pin16)
PTT output ... GPIO24 (Pin18)
*/
#include <gpiod.h>
struct gpiod_chip *chip = NULL;
struct gpiod_line *fa = NULL;
struct gpiod_line *fb = NULL, *va = NULL, *vb = NULL, *gptt = NULL, *gmute = NULL, *pttout = NULL;
int init_gpio()
{
int ret;
chip= gpiod_chip_open("/dev/gpiochip0");
if(!chip)
{
printf("cannot open GPIO chip\n");
return -1;
}
//fa= gpiod_chip_get_info(chip,17);
if (!fa) {
printf("cannot access GPIO17\n");
gpiod_chip_close(chip);
return -1;
}
//fb= gpiod_chip_get_line(chip,27);
if (!fb) {
printf("cannot access GPIO27\n");
gpiod_chip_close(chip);
return -1;
}
//va= gpiod_chip_get_line(chip,4);
if (!va) {
printf("cannot access GPIO4\n");
gpiod_chip_close(chip);
return -1;
}
//vb= gpiod_chip_get_line(chip,22);
if (!vb) {
printf("cannot access GPIO22\n");
gpiod_chip_close(chip);
return -1;
}
//gptt = gpiod_chip_get_line(chip,18);
if (!gptt) {
printf("cannot access GPIO18\n");
gpiod_chip_close(chip);
return -1;
}
//gmute = gpiod_chip_get_line(chip,23);
if (!gmute) {
printf("cannot access GPIO23\n");
gpiod_chip_close(chip);
return -1;
}
//pttout = gpiod_chip_get_line(chip,24);
if (!pttout) {
printf("cannot access GPIO24\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_get_fd(fa, "huhu");
if (ret) {
printf("cannot init GPIO17 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_input(fb, "huhu");
if (ret) {
printf("cannot init GPIO27 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_input(va, "huhu");
if (ret) {
printf("cannot init GPIO4 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_input(vb, "huhu");
if (ret) {
printf("cannot init GPIO22 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_input(gptt, "huhu");
if (ret) {
printf("cannot init GPIO18 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_input(gmute, "huhu");
if (ret) {
printf("cannot init GPIO23 for input\n");
gpiod_chip_close(chip);
return -1;
}
//ret = gpiod_line_request_get_fd(pttout, "huhu", 0);
if (ret) {
printf("cannot init GPIO24 for output\n");
gpiod_chip_close(chip);
return -1;
}
printf("GPIOs initialized\n");
return 0;
}
void close_gpio()
{
/* if(fa) gpiod_line_request(fa);
if(fb) gpiod_line_request(fb);
if(va) gpiod_line_request(va);
if(vb) gpiod_line_request(vb);
if(gptt) gpiod_line_request(gptt);
if(gmute) gpiod_line_request(gmute);
*/
if(chip) gpiod_chip_close(chip);
}
// get status of physical port
int getPort(char *port)
{
#ifndef RASPI
return 0;
#endif
if(port[0] == 'f')
{
//if(port[1] == 'a') return gpiod_line_value(fa);
//return gpiod_line_value(fb);
}
if(port[0] == 'v')
{
//if(port[1] == 'a') return gpiod_line_value(va);
//return gpiod_line_value(vb);
}
//if(port[0] == 'p')
//return gpiod_line_value(gptt);
//if(port[0] == 'm')
//return gpiod_line_value(gmute);
return 0;
}
void setPort(char *port, int value)
{
#ifndef RASPI
return;
#endif
if(port[0] == 'p')
{
//gpiod_line_value(pttout,value);
}
}

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void init_rotencoder();
void close_gpio();
int getEncSteps(int idx);
int test_ptt_gpio();
int test_mute_gpio();
void setPort(char *port, int value);
int getPort(char *port);

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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
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The licenses for most software and other practical works are designed
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When we speak of free software, we are referring to freedom, not
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# Make file for libkmaudio
# make clean ... clean up intermediate files
# make ... generate libkmaudio as executable for testing purposes
# and also creates the static library libkmaudio.a to be linked with another program
# when linking to another program also include "-lliquid -lsoundio" to your linker
CXXFLAGS = -Wall -O3 -std=c++0x -Wno-write-strings -Wno-narrowing
LDFLAGS = -lliquid -lsoundio
OBJM = libkmaudio.o
OBJ = libkmaudio_fifo.o libkmaudio_getDevices.o libkmaudio_getDevices_Linux.o libkmaudio_init.o libkmaudio_init_linux.o libkmaudio_interface.o libkmaudio_capture_linux.o libkmaudio_playback_linux.o libkmaudio_resampler.o
default: $(OBJ) $(OBJM)
g++ $(CXXFLAGS) -o libkmaudio $(OBJ) $(OBJM) $(LDFLAGS)
ar rcs libkmaudio.a $(OBJ)
clean:
rm -f *.o libkmaudio.a
-rm -rf ./Release/*
-rmdir Release
-rm -rf ./Debug/*
-rmdir Debug

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# libkmaudio
## very simple to use audio library for Linux and Windows
I was looking for an audio soultion working on both, Linux and Windows.
It was impossible to find a reliable open source solution.
If you have no problem using a commercial closed source library, then I recommend "bass"
which worked nicely for me, but I need open source to fulfil the requirements of GPL V3.
## My solution:
**portaudio:** works fine under Windows. Does not work under Linux because it does not support
pulseaudio and takes all these cryptical Alsa device names.
**libsoundio:** works well under Linux and supports pulseaudio, uses excellent device names.
But has problems under Windows, distortions and stuttering, so not usable on Windows.
So I wrote this library which uses portaudio for windows and libsoundio for Linux putting
all in a very simple to use library.
## highlights
* a capture or playback stream can be opened for every soundcard available in the computer simultaneously
* each stream gets its own fifo. So we do not have to work with streams, we just put our samples into a fifo or read samples from a fifo.
* Except the soundcard name we do not need to know anything about sound, all is done by this library.
* the library is thread safe and can be used in multithreading environments
## Restrictions
this library was written to be used with SDR receivers/transmitters or for signal analysis purposes. Therefore it supports 1 channel and two sample rates (44100 and 48000).
However, the 1-channel limit is just the fifo. So if someone needs stereo, adjust the routines to write both channels to the fifo.
## Windows
compatible with Visual Studio. All required Windows-Shared Libraries are included and must be copied to the path of the executable file.
## Linux
run "make" to compile the library. The shared libraries (supplied for PC 64bit or ARM 64 bit) must be copied to the folder where Linux searches for shared libraries on your computer. To find this folder you can use this command:
*find /usr -name libc.so | head -1*
## Documentation
There are only very few functions needed. They are described in libkmaudio.h
## Example
An example how to init the sound system, record from microphone and play back to loadspeaker can be found in libkmaudio.cpp. For use in another project simply remove main().

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/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of libsoundio, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#ifndef SOUNDIO_ENDIAN_H
#define SOUNDIO_ENDIAN_H
#if defined(__BIG_ENDIAN__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__ARMEB__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__THUMBEB__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__AARCH64EB__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(_MIPSEB)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__MIPSEB)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__MIPSEB__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(_BIG_ENDIAN)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__sparc)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__sparc__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(_POWER)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__powerpc__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__ppc__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__hpux)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__hppa)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(_POWER)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__s390__)
#define SOUNDIO_OS_BIG_ENDIAN
#elif defined(__LITTLE_ENDIAN__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__ARMEL__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__THUMBEL__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__AARCH64EL__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_MIPSEL)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__MIPSEL)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__MIPSEL__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_LITTLE_ENDIAN)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__i386__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__alpha__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__ia64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__ia64__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_M_IX86)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_M_IA64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_M_ALPHA)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__amd64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__amd64__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_M_AMD64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__x86_64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__x86_64__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(_M_X64)
#define SOUNDIO_OS_LITTLE_ENDIAN
#elif defined(__bfin__)
#define SOUNDIO_OS_LITTLE_ENDIAN
#else
#error unable to detect endianness
#endif
#endif

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
* Usage Example: see main() in this file
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio.cpp ... main() for test purposes only
* usually this library is linked to another program, in this case
* comment-out #define LIBTEST
*
*/
#include "libkmaudio.h"
int kmaudio_getDeviceList_test();
int keeprunning = 1;
/*
* main()
* for testing purposes only
* for library generation comment out: LIBTEST
*/
#define LIBTEST
#ifdef LIBTEST
int main()
{
// initialize sound system
// must be called once after program start
// if called during program run, this will reset the sound system, so better don't do it
kmaudio_init();
// read list of devices
// call as often as needed
// if a user pluggs-in an USB device on the fly then the running stream may
// be redirected by the OS. In this case closing/opening the stream
// may be required.
kmaudio_getDeviceList();
// start capture and/or playback streams
// Parameter: the device name and the sample rate (44100 or 48000 are supported)
// these function return the fifo-index, which is used to access the data in the
// coresponding fifo
int capidx = kmaudio_startCapture((char *)"Line 2 (Virtual Audio Cable)", 48000);
int pbidx = kmaudio_startPlayback((char *)"Line 2 (Virtual Audio Cable)", 48000);
float f[1100];
while (1)
{
// make a loop: record from Mic and play to Speaker
int done = 0;
// read samples from the capture fifo
int anz = kmaudio_readsamples(capidx, f, 1000, 1.0f, 0);
if (anz > 0)
{
// if samples are available, send them to playback fifo
//printf("write %d samples from %d to %d\n", anz, capidx, pbidx);
kmaudio_playsamples(pbidx, f, anz,1.0f);
done = 1;
}
}
// free resources. This will never happen in this example
// but should be done in the final program
kmaudio_close();
return 0;
}
#endif // LIBTEST

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#pragma once
#ifdef WIN32
// ignore senseless warnings invented by M$ to confuse developers
#pragma warning( disable : 4091 )
#pragma warning( disable : 4003 )
#endif
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <wchar.h>
#ifdef WIN32
#include "Winsock2.h"
#include "io.h"
#include <Windows.h>
#include <iostream>
#include <process.h>
#include <Tlhelp32.h>
#include <winbase.h>
#include <Shlobj.h>
#define _USE_MATH_DEFINES
#include <math.h>
#include "portaudio.h"
#include "pa_win_wasapi.h"
#pragma comment(lib, "portaudio_x86.lib")
#pragma comment(lib, "libliquid.lib")
#else
#include <sys/socket.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <sys/file.h>
#include <pthread.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <pwd.h>
#include <math.h>
#include "soundio.h"
#endif
#include "liquid.h"
/*
* Sample usage:
* init sound system
* 1. kmaudio_init();
* 2. kmaudio_getDeviceList();
*
* start a capture and a playback stream
* 3. kmaudio_startCapture() using a device name returned by io_getAudioDevicelist()
* 4. kmaudio_startPlayback() using a device name returned by io_getAudioDevicelist()
*
* now everything runs in the background, no more need for the user program
* to handle sound specific data
* now we can read/write sound samples as needed by our application
* as an example: get sound from microphone and send to speaker
* process in a loop:
* 5. kmaudio_readsamples()
* 6. kmaudio_playsamples()
*
* for a working example see main(), you will need to
* replace the device names with the names in your computer
*/
/*
* initialize the audio library, create required processes
* call only once when your application starts
* returns: 0 = OK, -1 = error
*/
int kmaudio_init();
/*
* closes and frees all resources
* call only when the application exits
*/
void kmaudio_close();
/*
* read a list of all available audio devices into devlist
* the list can then be read by calling io_getAudioDevicelist()
* call any time to find new plugged in/out devices
* returns: 0=OK, -1 if error
*/
int kmaudio_getDeviceList();
/*
* starts a capturing stream from devname with samprate
* returns: id of the capture stream or -1 = error
*/
int kmaudio_startCapture(char* devname, int samprate);
/*
* starts a playback stream to devname with samprate
* returns: id of the playback stream or -1 = error
*/
int kmaudio_startPlayback(char* devname, int samprate);
/*
* plays len samples from psamp to device id
* returns: 0=ok, -1=error
* id ... device id returned by kmaudio_startPlayback
* psamp ... float array of length len with the audio data (mono)
* len ... number of float values in psamp
* volume ... 0.0f..2.0f will be multiplied with the output sample
*/
int kmaudio_playsamples(int id, float* psamp, int len, float volume);
/*
* reads len samples from device id into psamp
* returns: 0=ok, -1=error
* id ... device id returned by kmaudio_startCapture
* psamp ... float array of length len getting the audio data (mono)
* len ... number of float values to write into psamp
* volume ... 0.0f..2.0f will be multiplied with the input sample
* wait ... 1=wait for data, 0=return if not enough data available (in this case psamp will return 0,0,0...)
*/
int kmaudio_readsamples(int id, float* psamp, int len, float volume, int wait);
/*
* reads the names of detected sound devices
* *len...length of the returned string
* returns: pointer to device string
* Format of the device string:
* first byte = 3 ... ID of this string, followed by pure text:
* Active status of the following device "0" or "1"
* Name of playback devices, followed by ~
* separator ^
* Active status of the following device "0" or "1"
* Name of capture devices, followed by ~
* these names are used for calls to kmaudio_startCapture and kmaudio_startPlayback
* to select the device
*/
uint8_t* io_getAudioDevicelist(int* len);
/*
* returns the max level (within 1 second) of this stream in % (0..100)
* if the level >= 100 the signal will get clipped and distorted
*/
uint8_t kmaudio_maxlevel(int id);
/*
* closes a stream which was started by
* kmaudio_startCapture or kmaudio_startPlayback
* id ... stream ID which was returned by kmaudio_startCapture or kmaudio_startPlayback
*/
void close_stream(int id);
/*
* handle the FIFO which is used to buffer audio data
* pipenum ... stream ID which was returned by kmaudio_startCapture or kmaudio_startPlayback
* IMPORTANT: this information MUST be used to synchonize the data flow into
* the fifo. The speed is always defined by the audio sample rate
* by checking the fifo an application knows when it has to put more audio samples
* into the fifo
*/
// returns number of remaining elements (audio 16 bit short values)
int io_fifo_freespace(int pipenum);
// returns number of used elements (audio 16 bit short values)
int io_fifo_usedspace(int pipenum);
// like before, but returns a number between 0 and 100 %
int io_fifo_usedpercent(int pipenum);
// clear the fifo
void io_fifo_clear(int pipenum);
// -------- functions for internal use only --------
#define MAXDEVICES 200
#define MAXDEVNAMELENGTH 150
typedef struct _DEVLIST_ {
int index = 0; // index to this list
int active = 0; // 1=device valid, 0=possibly disconencted
char name[MAXDEVNAMELENGTH] = { 0 };// real name
int in_out = 0; // 0=capture device, 1=playback device, 2=both
int supports_44100 = 0; // 1 if supported
int supports_48000 = 0; // 1 if supported
int requested_samprate = 0; // sample rate requested by caller
int real_samprate = 0; // real sample rate of the device
int working = 0; // 0=not running, 1=initialized and working
#ifdef WIN32 // Windows using portaudio
int devnum = -1; // port audio device number
PaStreamParameters inputParameters;
PaStreamParameters outputParameters;
PaStream* capStream = NULL;
PaStream* pbStream = NULL;
#else // Linux using libsoundio
struct SoundIoDevice* io_pb_device = NULL;
struct SoundIoDevice* io_cap_device = NULL;
struct SoundIoInStream* instream = NULL;
struct SoundIoOutStream* outstream = NULL;
int stereo_mono = 2; // 1=mono, 2=stereo
char id[1000] = { 0 };
#endif
} DEVLIST;
int searchDevice(char* devname, int io);
void measure_speed_bps(int len);
void sleep_ms(int ms);
void io_write_fifo(int pipenum, float sample);
void io_write_fifo_short(int pipenum, int16_t sample);
void io_fifo_clear(int pipenum);
void init_pipes();
int io_read_fifo_num(int pipenum, float* data, int num);
int io_read_fifo(int pipenum, float* data);
int getRealSamprate(int idx);
int io_fifo_elems_avail(int pipenum);
void sleep_ms(int ms);
void io_buildAudioDevString();
void resampler_create(int devidx);
float* resample(int id, float* psamp, int len, int* pnewlen);
uint64_t getms();
void init_maxarray();
void kmaudio_detectDropouts(int id);
int io_read_fifo_num_short(int pipenum, int16_t* data, int num);
void close_capture_stream(int idx);
void close_playback_stream(int idx);
extern DEVLIST devlist[MAXDEVICES];
extern int devanz;
extern int keeprunning;
#ifndef WIN32 // Linux
int kmaudio_init_linux();
void kmaudio_close_linux();
char* getDevID(char* devname, int io, int* pidx);
extern struct SoundIo* soundio;
#endif // ndef WIN32

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<Filter>Quelldateien</Filter>
</ClCompile>
<ClCompile Include="libkmaudio_capture_linux.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
<ClCompile Include="libkmaudio_playback_linux.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
<ClCompile Include="libkmaudio_resampler.cpp">
<Filter>Quelldateien</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="libkmaudio.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="pa_win_wasapi.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="pa_win_waveformat.h">
<Filter>Headerdateien</Filter>
</ClInclude>
<ClInclude Include="soundio.h">
<Filter>Headerdateien</Filter>
</ClInclude>
</ItemGroup>
</Project>

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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup />
</Project>

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_capture.cpp ...
* starts a portaudio capture stream and a callback routine. Writes the
* received audio samples into the fifo (Windows only)
*/
#include "libkmaudio.h"
#define FRAMES_PER_BUFFER 512
int recordCallback(const void* inputBuffer, void* outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void* userData);
void close_capture_stream(int idx)
{
if (devlist[idx].capStream != NULL)
{
Pa_CloseStream(devlist[idx].capStream);
devlist[idx].capStream = NULL;
}
}
int kmaudio_startCapture(char* devname, int samprate)
{
printf("Start request for CAP stream:%s\n", devname);
if (devname == NULL || strlen(devname) < 3) // no devices defined yet
{
printf("no capture devices specified\n");
return -1;
}
int idx = searchDevice(devname, 0);
if (idx == -1)
{
printf("Device:<%s> not found\n", devname);
return -1;
}
devlist[idx].working = 0;
close_capture_stream(idx);
printf("Starting CAP stream:%s [%d]\n", devname, idx);
io_fifo_clear(idx);
devlist[idx].requested_samprate = samprate;
if(getRealSamprate(idx) == -1)
{
printf("Samplerate %d not supported by device:<%s>\n", samprate, devname);
return -1;
}
if (devlist[idx].requested_samprate != devlist[idx].real_samprate)
resampler_create(idx);
struct PaWasapiStreamInfo wasapiInfo;
memset(&wasapiInfo, 0, sizeof(PaWasapiStreamInfo));
wasapiInfo.size = sizeof(PaWasapiStreamInfo);
wasapiInfo.hostApiType = paWASAPI;
wasapiInfo.version = 1;
wasapiInfo.flags = (paWinWasapiExclusive | paWinWasapiThreadPriority);
wasapiInfo.threadPriority = eThreadPriorityProAudio;
devlist[idx].inputParameters.hostApiSpecificStreamInfo = (&wasapiInfo);
int e = Pa_IsFormatSupported(&devlist[idx].inputParameters, NULL, (double)devlist[idx].real_samprate);
printf("err:%d device:%d PAdev:%d samprate: %f\n", e,idx, devlist[idx].devnum,(double)devlist[idx].real_samprate);
devlist[idx].index = idx;
int err = Pa_OpenStream(
&devlist[idx].capStream,
&devlist[idx].inputParameters,
NULL,
(double)devlist[idx].real_samprate,
FRAMES_PER_BUFFER,
paClipOff,
recordCallback,
&(devlist[idx].index));
if (err != paNoError)
{
printf("cannot open capture stream for device:<%s> %d\n", devname,err);
return -1;
}
err = Pa_StartStream(devlist[idx].capStream);
if (err != paNoError)
{
printf("cannot start capture stream for device:<%s>\n", devname);
return -1;
}
printf("Capture started sucessfully\n");
devlist[idx].working = 1;
return idx;
}
int recordCallback( const void* inputBuffer,
void* outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void* userData)
{
const int16_t* rptr = (const int16_t*)inputBuffer;
int devidx = *((int *)userData);
int chans = devlist[devidx].inputParameters.channelCount;
//printf("%ld captured %d frames. Flag: %X\n", (long)rptr,framesPerBuffer, statusFlags);
//measure_speed_bps(framesPerBuffer);
//printf("%d %d\n", chans, rptr[0]);
for (unsigned int i = 0; i < framesPerBuffer; i++)
io_write_fifo_short(devidx, rptr[i * chans]);
// Prevent unused variable warnings
(void)outputBuffer;
(void)timeInfo;
(void)statusFlags;
if(keeprunning == 1)
return paContinue;
return paComplete;
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_capture.cpp ...
* starts a libsoundio capture stream and a callback routine. Writes the
* received audio samples into the fifo (Linux only)
*/
#ifndef WIN32
#include "libkmaudio.h"
char* getDevID(char* devname, int io, int *pidx)
{
for (int i = 0; i < devanz; i++)
{
//printf("%s: %d %d\n", devlist[i].name, io, devlist[i].in_out);
if (!strcmp(devname, devlist[i].name) && io == devlist[i].in_out)
{
*pidx = i;
return devlist[i].id;
}
}
return NULL;
}
int min_int(int a, int b)
{
return (a < b) ? a : b;
}
void read_callback(struct SoundIoInStream* instream, int frame_count_min, int frame_count_max)
{
int err;
if (instream == NULL || soundio == NULL) return;
//printf("cap: %d %d\n", frame_count_min, frame_count_max);
//int chans = instream->layout.channel_count;
//printf("cap:%d\n", instream->sample_rate);
int idx = *((int *)(instream->userdata));
struct SoundIoChannelArea* areas;
// samples are in areas.ptr
int frames_left = frame_count_max; // take all
while (keeprunning)
{
int frame_count = frames_left;
if ((err = soundio_instream_begin_read(instream, &areas, &frame_count)))
{
fprintf(stderr, "begin read error: %s", soundio_strerror(err));
return;
}
if (!frame_count)
break;
//printf("write %d samples to fifo %d. Channels:%d\n", frame_count, idx, instream->layout.channel_count);
for (int frame = 0; frame < frame_count; frame += 1)
{
for (int ch = 0; ch < instream->layout.channel_count; ch += 1)
{
float frxdata;
memcpy(&frxdata, areas[ch].ptr, instream->bytes_per_sample);
areas[ch].ptr += areas[ch].step;
if (ch == 0)
{
io_write_fifo(idx, frxdata);
}
}
}
//measure_speed_bps(frame_count);
if ((err = soundio_instream_end_read(instream)))
{
printf("end read error: %s", soundio_strerror(err));
return;
}
frames_left -= frame_count;
if (frames_left <= 0)
break;
}
}
void overflow_callback(struct SoundIoInStream* instream)
{
static int count = 0;
printf("overflow %d\n", ++count);
}
void close_capture_stream(int idx)
{
if (devlist[idx].instream != NULL)
{
soundio_instream_destroy(devlist[idx].instream);
devlist[idx].instream = NULL;
}
}
int kmaudio_startCapture(char* devname, int samprate)
{
printf("Start request for CAP stream:%s\n", devname);
if (devname == NULL || strlen(devname) < 3) // no devices defined yet
{
printf("no capture devices specified\n");
return -1;
}
int idx = 0; // index into devlist
char* capdevid = getDevID(devname, 0, &idx);
if (capdevid == NULL)
{
printf("CAP: Device ID not found\n");
return -1;
}
// if an old stream is open, close it
close_capture_stream(idx);
printf("Starting CAP stream:%s [%d]\n", devname, idx);
io_fifo_clear(idx);
devlist[idx].working = 0;
// define the capture device
soundio_flush_events(soundio);
for (int i = 0; i < soundio_input_device_count(soundio); i++)
{
devlist[idx].io_cap_device = NULL;
struct SoundIoDevice* device = soundio_get_input_device(soundio, i);
if (strcmp(device->id, capdevid) == 0)
{
devlist[idx].io_cap_device = device;
break;
}
soundio_device_unref(device);
}
if (!devlist[idx].io_cap_device)
{
printf("Invalid device id: %s\n", capdevid);
return -1;
}
if (devlist[idx].io_cap_device->probe_error)
{
printf("Unable to probe device: %s\n", soundio_strerror(devlist[idx].io_cap_device->probe_error));
return -1;
}
// create capture callback
devlist[idx].instream = soundio_instream_create(devlist[idx].io_cap_device);
if (!devlist[idx].instream) {
printf("capture: out of memory\n");
return -1;
}
devlist[idx].requested_samprate = samprate;
if (getRealSamprate(idx) == -1)
{
printf("Samplerate %d not supported by device:<%s>\n", samprate, devname);
return -1;
}
if (devlist[idx].requested_samprate != devlist[idx].real_samprate)
resampler_create(idx);
devlist[idx].instream->format = SoundIoFormatFloat32NE;
devlist[idx].instream->sample_rate = devlist[idx].real_samprate;
devlist[idx].instream->software_latency = 0.1f;
devlist[idx].instream->read_callback = read_callback;
devlist[idx].instream->overflow_callback = overflow_callback;
devlist[idx].instream->userdata = &(devlist[idx].index);
int err = 0;
if ((err = soundio_instream_open(devlist[idx].instream))) {
printf("unable to open input stream: %d: %s", err, soundio_strerror(err));
return -1;
}
if ((err = soundio_instream_start(devlist[idx].instream))) {
printf("unable to start input device: %s", soundio_strerror(err));
return -1;
}
printf("selected CAPTURE device:\nname:%s\nid :%s\n", devlist[idx].name, capdevid);
printf("physical capture rate:%d, requested capture rate:%d\n", devlist[idx].real_samprate, devlist[idx].requested_samprate);
printf("format: %s\n\n", soundio_format_string(devlist[idx].instream->format));
devlist[idx].working = 1;
return idx;
}
#endif // #ifndef WIN32

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_fifo.cpp ... thread safe FIFOs, used to interface the
* audio callback routines to the other program
*
*/
#include "libkmaudio.h"
#define NUM_OF_PIPES 20
#ifdef WIN32
CRITICAL_SECTION audio_crit_sec[NUM_OF_PIPES];
#define LOCK(pn) EnterCriticalSection(&(audio_crit_sec[pn]))
void UNLOCK(int pn)
{
if (&(audio_crit_sec[pn]) != NULL)
LeaveCriticalSection(&(audio_crit_sec[pn]));
}
#else
pthread_mutex_t audio_crit_sec[NUM_OF_PIPES];
#define LOCK(pn) pthread_mutex_lock(&(audio_crit_sec[pn]))
#define UNLOCK(pn) pthread_mutex_unlock(&(audio_crit_sec[pn]))
#endif
#define AUDIO_FIFOFLEN 48000
int io_wridx[NUM_OF_PIPES];
int io_rdidx[NUM_OF_PIPES];
int16_t io_buffer[NUM_OF_PIPES][AUDIO_FIFOFLEN];
void init_pipes()
{
// init pipes only once
static int f = 1;
if (f)
{
f = 0;
for (int i = 0; i < NUM_OF_PIPES; i++)
{
#ifdef WIN32
if (&(audio_crit_sec[i]) != NULL) DeleteCriticalSection(&(audio_crit_sec[i]));
InitializeCriticalSection(&(audio_crit_sec[i]));
#else
if (&(audio_crit_sec[i]) != NULL) pthread_mutex_destroy(&(audio_crit_sec[i]));
pthread_mutex_init(&(audio_crit_sec[i]), NULL);
#endif
}
}
for (int i = 0; i < NUM_OF_PIPES; i++)
io_fifo_clear(i);
}
// write one sample into the fifo
// ignore data if the fifo is full
void io_write_fifo(int pipenum, float sample)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return;
LOCK(pipenum);
if (((io_wridx[pipenum] + 1) % AUDIO_FIFOFLEN) == io_rdidx[pipenum])
{
//printf("cannot float WRITE fifo %d full\n",pipenum);
UNLOCK(pipenum);
return;
}
io_buffer[pipenum][io_wridx[pipenum]] = (int16_t)(sample * 32768.0f);
if (++io_wridx[pipenum] >= AUDIO_FIFOFLEN) io_wridx[pipenum] = 0;
UNLOCK(pipenum);
}
void io_write_fifo_short(int pipenum, int16_t sample)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return;
LOCK(pipenum);
if (((io_wridx[pipenum] + 1) % AUDIO_FIFOFLEN) == io_rdidx[pipenum])
{
//printf("cannot short WRITE fifo %d full\n", pipenum);
UNLOCK(pipenum);
return;
}
io_buffer[pipenum][io_wridx[pipenum]] = sample;
if (++io_wridx[pipenum] >= AUDIO_FIFOFLEN) io_wridx[pipenum] = 0;
UNLOCK(pipenum);
}
int io_read_fifo(int pipenum, float* data)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return 0;
LOCK(pipenum);
if (io_rdidx[pipenum] == io_wridx[pipenum])
{
// Fifo empty, no data available
UNLOCK(pipenum);
return 0;
}
int16_t id = io_buffer[pipenum][io_rdidx[pipenum]];
if (++io_rdidx[pipenum] >= AUDIO_FIFOFLEN) io_rdidx[pipenum] = 0;
UNLOCK(pipenum);
*data = (float)id / 32768;
return 1;
}
// read num elements
// if num elems not avail, return all what fifo has stored
int io_read_fifo_num(int pipenum, float* data, int num)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return 0;
LOCK(pipenum);
int elemInFifo = (io_wridx[pipenum] + AUDIO_FIFOFLEN - io_rdidx[pipenum]) % AUDIO_FIFOFLEN;
elemInFifo -= 1;
/*if (num > elemInFifo)
{
// Fifo not enough data available
//printf("only %d elements available\n", elemInFifo);
UNLOCK(pipenum);
return 0;
}*/
if (num > elemInFifo) num = elemInFifo;
int16_t id;
for (int i = 0; i < num; i++)
{
id = io_buffer[pipenum][io_rdidx[pipenum]];
*data++ = (float)id / 32768;
if (++io_rdidx[pipenum] >= AUDIO_FIFOFLEN) io_rdidx[pipenum] = 0;
}
UNLOCK(pipenum);
return num;
}
int io_read_fifo_num_short(int pipenum, int16_t* data, int num)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return 0;
LOCK(pipenum);
int elemInFifo = (io_wridx[pipenum] + AUDIO_FIFOFLEN - io_rdidx[pipenum]) % AUDIO_FIFOFLEN;
elemInFifo -= 1;
/*if (num > elemInFifo)
{
// Fifo not enough data available
//printf("only %d elements available\n", elemInFifo);
UNLOCK(pipenum);
return 0;
}*/
if (num > elemInFifo) num = elemInFifo;
for (int i = 0; i < num; i++)
{
*data++ = io_buffer[pipenum][io_rdidx[pipenum]];
if (++io_rdidx[pipenum] >= AUDIO_FIFOFLEN) io_rdidx[pipenum] = 0;
}
UNLOCK(pipenum);
return num;
}
void io_fifo_clear(int pipenum)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return;
io_wridx[pipenum] = io_rdidx[pipenum] = 0;
}
int io_fifo_freespace(int pipenum)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return 0;
int freebuf = 0;
LOCK(pipenum);
int elemInFifo = (io_wridx[pipenum] + AUDIO_FIFOFLEN - io_rdidx[pipenum]) % AUDIO_FIFOFLEN;
freebuf = AUDIO_FIFOFLEN - elemInFifo -1;
UNLOCK(pipenum);
return freebuf;
}
int io_fifo_elems_avail(int pipenum)
{
if (pipenum < 0 || pipenum >= NUM_OF_PIPES) return 0;
int elems = 0;
LOCK(pipenum);
elems = (io_wridx[pipenum] + AUDIO_FIFOFLEN - io_rdidx[pipenum]) % AUDIO_FIFOFLEN;
UNLOCK(pipenum);
elems -= 10;
return elems;
}
int io_fifo_usedspace(int pipenum)
{
return AUDIO_FIFOFLEN - io_fifo_freespace(pipenum);
}
int io_fifo_usedpercent(int pipenum)
{
int used = AUDIO_FIFOFLEN - io_fifo_freespace(pipenum);
int percent = (used * 100) / AUDIO_FIFOFLEN;
//printf("idx:%d used:%d size:%d percent:%d\n", pipenum, used, AUDIO_FIFOFLEN, percent);
return percent;
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_getDevices.cpp
* read audio device list via portaudio (which is only used for Windows)
* prepare a device name string which can be read by another program
* in order to present the devices to use user for selection
*
*/
#include "libkmaudio.h"
void io_buildAudioDevString();
// number of detected devices, updated after a call to kmaudio_getDeviceList()
int devanz = 0;
// devlist contains all information for all detected devices
// the list is filled by a call to kmaudio_getDeviceList()
DEVLIST devlist[MAXDEVICES];
double latency = 0.2; // WASAPI latency in seconds
#ifdef WIN32
/*static double standardSampleRates[] = {
8000.0, 9600.0, 11025.0, 12000.0, 16000.0,
22050.0, 24000.0, 32000.0, 44100.0, 48000.0,
88200.0, 96000.0, 192000.0, -1 };*/
static double standardSampleRates[] = {44100.0, 48000.0, -1};
int getDevlistIndex(const char* name, int ichans, int ochans)
{
for (int i = 0; i < devanz; i++)
{
// check if already exists
if (!strcmp(devlist[i].name, name) &&
devlist[i].inputParameters.channelCount == ichans &&
devlist[i].outputParameters.channelCount == ochans)
return i;
}
int newidx = devanz;
devanz++;
//printf("New Dev:%s Idx:%d\n", name, newidx);
return newidx;
}
int kmaudio_getDeviceList()
{
int numDevices = Pa_GetDeviceCount();
if (numDevices < 0)
{
printf("ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices);
return -1;
}
//printf("%d Devices found\n", numDevices);
for (int i = 0; i < devanz; i++)
devlist[i].active = 0;
int didx;
for (int i = 0; i < numDevices; i++)
{
const PaDeviceInfo* deviceInfo = Pa_GetDeviceInfo(i);
const PaHostApiInfo *ai = Pa_GetHostApiInfo(deviceInfo->hostApi);
// Windows: use WASAPI devices only
if (strstr(ai->name, "WASAPI") != NULL)
{
didx = getDevlistIndex(deviceInfo->name, deviceInfo->maxInputChannels, deviceInfo->maxOutputChannels);
devlist[didx].devnum = i;
snprintf(devlist[didx].name, MAXDEVNAMELENGTH - 1, "%s", deviceInfo->name);
//printf("------%s-------\n", deviceInfo->name);
devlist[didx].inputParameters.device = i;
devlist[didx].inputParameters.channelCount = deviceInfo->maxInputChannels;
devlist[didx].inputParameters.sampleFormat = paInt16;
devlist[didx].inputParameters.suggestedLatency = latency;
devlist[didx].inputParameters.hostApiSpecificStreamInfo = NULL;
devlist[didx].outputParameters.device = i;
devlist[didx].outputParameters.channelCount = deviceInfo->maxOutputChannels;
devlist[didx].outputParameters.sampleFormat = paInt16;
devlist[didx].outputParameters.suggestedLatency = latency;
devlist[didx].outputParameters.hostApiSpecificStreamInfo = NULL;
if (devlist[didx].inputParameters.channelCount > 0 && devlist[devanz].outputParameters.channelCount > 0)
devlist[didx].in_out = 2;
else if (devlist[didx].inputParameters.channelCount > 0)
devlist[didx].in_out = 0;
else if (devlist[didx].outputParameters.channelCount > 0)
devlist[didx].in_out = 1;
devlist[didx].index = didx;
devlist[didx].active = 1;
for (int j = 0; standardSampleRates[j] > 0; j++)
{
PaError err = 0;
//if (devlist[didx].inputParameters.channelCount > 0 && devlist[didx].outputParameters.channelCount > 0)
// err = Pa_IsFormatSupported(&devlist[didx].inputParameters, &devlist[didx].outputParameters, standardSampleRates[j]);
if (devlist[didx].inputParameters.channelCount > 0)
err = Pa_IsFormatSupported(&devlist[didx].inputParameters, NULL, standardSampleRates[j]);
if (devlist[didx].outputParameters.channelCount > 0)
err = Pa_IsFormatSupported(NULL, &devlist[didx].outputParameters, standardSampleRates[j]);
// portaudio cannot detect if a device was removed, instead it delivers errors
if (err == paInvalidDevice)
devlist[didx].active = 0;
else if (err == paFormatIsSupported)
{
if (j == 0) devlist[didx].supports_44100 = 1;
if (j == 1) devlist[didx].supports_48000 = 1;
}
}
}
}
io_buildAudioDevString();
// close stream if a device does not exist any more
for (int i = 0; i < devanz; i++)
{
if (devlist[i].active == 0)
{
if (devlist[i].capStream != NULL)
{
printf("capture device %s disconnected, stop stream\n", devlist[i].name);
Pa_CloseStream(devlist[i].capStream);
devlist[i].capStream = NULL;
devlist[i].working = 0;
}
if (devlist[i].pbStream != NULL)
{
printf("playback device %s disconnected, stop stream\n", devlist[i].name);
Pa_CloseStream(devlist[i].pbStream);
devlist[i].pbStream = NULL;
devlist[i].working = 0;
}
}
}
static int csum = 0;
int sum = 0;
uint8_t* p = (uint8_t*)&(devlist[0].index);
for (int i = 0; i < (int)sizeof(devlist); i++)
sum += *p++;
if (csum != sum)
{
csum = sum;
printf("Windows Devices found:\n");
for (int i = 0; i < devanz; i++)
{
printf("Portaudio ID: %d\n", devlist[i].index);
printf("Name: %s\n", devlist[i].name);
printf("Cap/PB: %d\n", devlist[i].in_out);
printf("Channels: i:%d o:%d\n", devlist[i].inputParameters.channelCount, devlist[i].outputParameters.channelCount);
printf("SR 44100: %d\n", devlist[i].supports_44100);
printf("SR 48000: %d\n", devlist[i].supports_48000);
printf("is active: %s\n", devlist[i].active ? "yes" : "no");
}
}
return 0;
}
#endif //WIN32
// find a device in devlist
// returns: list index or -1 if error
int searchDevice(char* devname, int io)
{
for (int i = 0; i < devanz; i++)
{
if (strcmp(devname, devlist[i].name) == 0 && (devlist[i].in_out == io || devlist[i].in_out == 2))
return i;
}
return -1;
}
// choose physical, real sample rate for a device
// returns: 0=ok, -1=error: no sample rate supported
int getRealSamprate(int idx)
{
if (devlist[idx].requested_samprate == 44100)
{
if (devlist[idx].supports_44100) devlist[idx].real_samprate = 44100;
else if (devlist[idx].supports_48000) devlist[idx].real_samprate = 48000;
else return -1;
}
else if (devlist[idx].requested_samprate == 48000)
{
if (devlist[idx].supports_48000) devlist[idx].real_samprate = 48000;
else if (devlist[idx].supports_44100) devlist[idx].real_samprate = 44100;
else return -1;
}
else
{
if (devlist[idx].supports_48000) devlist[idx].real_samprate = 48000;
else if (devlist[idx].supports_44100) devlist[idx].real_samprate = 44100;
else return -1;
}
return 0;
}
// build string of audio device name, to be sent to application as response to Broadcast search
// starting with PB devices, sperarator ^, capture devices
// separator between devices: ~
#define MAXDEVSTRLEN (MAXDEVICES * (MAXDEVNAMELENGTH + 2) + 10)
uint8_t io_devstring[MAXDEVSTRLEN];
void io_buildAudioDevString()
{
memset(io_devstring, 0, sizeof(io_devstring));
io_devstring[0] = ' '; // placeholder for other data
io_devstring[1] = ' ';
io_devstring[2] = ' ';
io_devstring[3] = ' ';
io_devstring[4] = ' ';
// playback devices
for (int i = 0; i < devanz; i++)
{
if (devlist[i].active == 0) continue;
if (strlen((char *)io_devstring) > MAXDEVSTRLEN)
{
printf("io_devstring too small:%d / %d. Serious error, abort program\n", MAXDEVSTRLEN, (int)strlen((char*)io_devstring));
exit(0);
}
if (devlist[i].in_out == 1)
{
strcat((char*)io_devstring, devlist[i].name);
strcat((char*)io_devstring, "~"); // audio device separator
}
}
strcat((char*)(io_devstring + 1), "^"); // PB, CAP separator
// capture devices
for (int i = 0; i < devanz; i++)
{
if (devlist[i].active == 0) continue;
if (strlen((char*)io_devstring) > MAXDEVSTRLEN)
{
printf("io_devstring too small:%d / %d. Serious error, abort program\n", MAXDEVSTRLEN, (int)strlen((char*)io_devstring));
exit(0);
}
if (devlist[i].in_out == 0)
{
strcat((char*)io_devstring, devlist[i].name);
strcat((char*)io_devstring, "~"); // audio device separator
}
}
//printf("<%s>\n", (char *)io_devstring);
}
uint8_t* io_getAudioDevicelist(int* len)
{
*len = strlen((char*)(io_devstring + 1)) + 1;
return io_devstring;
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_getDevices_linux.cpp
* like libkmaudio_getDevices.cpp, but uses libsoundio under Linux
* to get the device list. Portaudio does not work under Linux because
* it does not support pulseaudio. Therefore the linux functions
* use libsoundio
*
*/
#ifndef WIN32 // Linux
#include "libkmaudio.h"
int scan_devices();
int kmaudio_getDeviceList()
{
if (soundio == NULL)
{
printf("kmaudio_getDeviceList: soundio not initialized\n");
return -1;
}
soundio_flush_events(soundio); // to get actual data
if (scan_devices() == -1) // read devices
{
printf("cannot read audio devices\n");
return -1;
}
io_buildAudioDevString();
// close stream if a device does not exist any more
for (int i = 0; i < devanz; i++)
{
if (devlist[i].active == 0)
{
if (devlist[i].instream != NULL)
{
printf("capture device %s disconnected, stop stream\n", devlist[i].name);
soundio_instream_destroy(devlist[i].instream);
devlist[i].instream = NULL;
devlist[i].working = 0;
}
if (devlist[i].outstream != NULL)
{
printf("playback device %s disconnected, stop stream\n", devlist[i].name);
soundio_outstream_destroy(devlist[i].outstream);
devlist[i].outstream = NULL;
devlist[i].working = 0;
}
}
}
static int csum = 0;
int sum = 0;
uint8_t *p = (uint8_t *)&(devlist[0].index);
for (int i = 0; i < (int)sizeof(devlist); i++)
sum += *p++;
if (csum != sum)
{
csum = sum;
/*printf("====== Linux Devices found: ======\n");
for (int i = 0; i < devanz; i++)
{
printf("Index: %d\n", devlist[i].index);
printf("Name: %s\n", devlist[i].name);
printf("ID: %s\n", devlist[i].id);
printf("Cap/PB: %d\n", devlist[i].in_out);
printf("Channels: %d\n", devlist[i].stereo_mono);
printf("SR 44100: %d\n", devlist[i].supports_44100);
printf("SR 48000: %d\n", devlist[i].supports_48000);
printf("is active: %s\n", devlist[i].active ? "yes" : "no");
printf("--------------------------------------\n");
}*/
}
return 0;
}
static void get_channel_layout(const struct SoundIoChannelLayout *layout)
{
if (layout->name)
{
if (strstr(layout->name, "ereo"))
devlist[devanz].stereo_mono = 2;
if (strstr(layout->name, "ono"))
devlist[devanz].stereo_mono = 1;
}
}
int getDeviceParameters(int idx, struct SoundIoDevice *device)
{
strncpy(devlist[idx].id, device->id, sizeof(devlist[0].id) - 1);
devlist[idx].id[sizeof(devlist[0].id) - 1] = 0;
strncpy(devlist[idx].name, device->name, sizeof(devlist[0].name) - 1);
devlist[idx].name[sizeof(devlist[0].name) - 1] = 0;
for (int i = 0; i < device->layout_count; i++)
get_channel_layout(&device->layouts[i]);
int min = 999999, max = 0;
for (int i = 0; i < device->sample_rate_count; i++)
{
struct SoundIoSampleRateRange *range = &device->sample_rates[i];
if (range->min < min)
min = range->min;
if (range->max > max)
max = range->max;
}
if (min <= 44100)
devlist[idx].supports_44100 = 1;
if (max >= 48000)
devlist[idx].supports_48000 = 1;
if (devlist[idx].supports_44100 == 0 && devlist[idx].supports_48000 == 0)
return 0;
return 1;
}
int getDevlistIndex(char *name, char *id)
{
/* !!! Achtung: das hier filtert Devices raus die auf PB und CAP gleiche Daten haben !!!
noch nach PB und CAP unterscheiden
for (int i = 0; i < devanz; i++)
{
// check if already exists
if (!strcmp(devlist[i].id, id) && !strcmp(devlist[i].name, name))
return i;
}*/
int newidx = devanz;
devanz++;
//printf("New Dev:%s Idx:%d\n", name, newidx);
return newidx;
}
int scan_devices()
{
for (int i = 0; i < devanz; i++)
devlist[i].active = 0;
int didx;
for (int i = 0; i < soundio_input_device_count(soundio); i++)
{
struct SoundIoDevice *device = soundio_get_input_device(soundio, i);
if (device == NULL)
continue;
if (strstr(device->name, "onitor"))
continue;
if (device->probe_error)
continue;
didx = getDevlistIndex(device->name, device->id);
if (getDeviceParameters(didx, device) == 1)
{
printf("%d %d %d ====CAP: name:<%s>\n", i, devanz, didx, device->name);
devlist[didx].in_out = 0;
devlist[didx].index = didx;
devlist[didx].active = 1;
}
else
{
*devlist[didx].name = 0;
*devlist[didx].id = 0;
}
soundio_device_unref(device);
}
for (int i = 0; i < soundio_output_device_count(soundio); i++)
{
struct SoundIoDevice *device = soundio_get_output_device(soundio, i);
if (device == NULL)
continue;
if (strstr(device->name, "onitor"))
continue;
if (device->probe_error)
continue;
didx = getDevlistIndex(device->name, device->id);
if (getDeviceParameters(didx, device) == 1)
{
printf("%d %d %d ====PB : name:<%s>\n", i, devanz, didx, device->name);
devlist[didx].in_out = 1;
devlist[didx].index = didx;
devlist[didx].active = 1;
}
else
{
*devlist[didx].name = 0;
*devlist[didx].id = 0;
}
soundio_device_unref(device);
}
return 0;
}
#endif // ifndef WIN32

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_init.cpp ... initialize portaudio (Windows only)
*
*/
#include "libkmaudio.h"
void kmaudio_close();
int kmaudio_init()
{
kmaudio_close();
sleep_ms(100);
printf("libkmaudio_init\n");
init_pipes(); // init fifo
init_maxarray(); // init array for maxlevel measurement
#ifdef WIN32
int err = Pa_Initialize();
if (err != paNoError)
{
printf("ERROR: Pa_Initialize returned 0x%x\n", err);
return -1;
}
printf("PortAudio version: 0x%08X\n", Pa_GetVersion());
#else
return kmaudio_init_linux();
#endif
return 0;
}
void kmaudio_close()
{
printf("libkmaudio_close\n");
#ifdef WIN32
for (int i = 0; i < devanz; i++)
{
if (devlist[i].capStream != NULL)
{
Pa_CloseStream(devlist[i].capStream);
devlist[i].capStream = NULL;
}
if (devlist[i].pbStream != NULL)
{
Pa_CloseStream(devlist[i].pbStream);
devlist[i].pbStream = NULL;
}
}
Pa_Terminate();
#else
kmaudio_close_linux();
#endif
}
// diagonstic routines for development
#define MAXSPDARR 10
int spdarr[MAXSPDARR];
int spdarrbps[MAXSPDARR];
#ifdef _LINUX_
uint64_t getms()
{
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t at = tv.tv_sec * 1000000 + tv.tv_usec;
at = at / 1000;
return at;
}
#endif
#ifdef WIN32
uint64_t getms()
{
// get time in 100ns resolution
FILETIME ft_now;
GetSystemTimeAsFileTime(&ft_now);
// convert to full 64 bit time
uint64_t ll_now = (uint64_t)ft_now.dwLowDateTime + ((uint64_t)(ft_now.dwHighDateTime) << 32LL);
// convert to Milliseconds
ll_now /= (10 * 1000); // still needs 64 bit integer
return ll_now;
}
#else
uint64_t getms()
{
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t at = tv.tv_sec * 1000000 + tv.tv_usec;
at = at / 1000;
return at;
}
#endif
void measure_speed_bps(int len)
{
static uint64_t lasttim = 0;
static int elems = 0;
uint64_t tim = getms();
int timespan = (int)(tim - lasttim);
if (timespan < 0)
{
lasttim = tim;
return;
}
elems += len;
if (timespan < 1000) return;
double dspd = elems;
dspd = dspd * 1e3 / timespan;
int speed = (int)dspd;
// here we have number of elements after 1s
printf(" ======================= %d bit/s\n", speed);
elems = 0;
lasttim = tim;
}
void sleep_ms(int ms)
{
#ifdef WIN32
Sleep(ms);
#else
usleep(ms * 1000);
#endif
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_init_linux.cpp ... initialize libsoundio (Linux only)
*
*/
#include "libkmaudio.h"
struct SoundIo* soundio = NULL;
#ifndef WIN32 // Linux
int kmaudio_init_linux()
{
int err;
// prepare and connect to libsoundio
soundio = soundio_create();
if (!soundio) {
printf("soundio_create: out of memory\n");
return -1;
}
if ((err = soundio_connect(soundio))) {
printf("soundio_connect: %s\n", soundio_strerror(err));
return -1;
}
printf("linux libkmaudio_init finished\n");
return 0;
}
void kmaudio_close_linux()
{
for (int i = 0; i < devanz; i++)
{
if (devlist[i].instream) soundio_instream_destroy(devlist[i].instream);
devlist[i].instream = NULL;
if (devlist[i].outstream) soundio_outstream_destroy(devlist[i].outstream);
devlist[i].outstream = NULL;
if (devlist[i].io_pb_device) soundio_device_unref(devlist[i].io_pb_device);
devlist[i].io_pb_device = NULL;
if (devlist[i].io_cap_device) soundio_device_unref(devlist[i].io_cap_device);
devlist[i].io_cap_device = NULL;
}
if (soundio) soundio_destroy(soundio);
soundio = NULL;
}
#endif // ndef WIN32

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#include "libkmaudio.h"
void getMax(int id, float fv);
void close_stream(int id)
{
#ifdef WIN32
if (devlist[id].capStream != NULL)
close_capture_stream(id);
if (devlist[id].pbStream != NULL)
close_playback_stream(id);
#else
if (devlist[id].instream != NULL)
close_capture_stream(id);
if (devlist[id].outstream != NULL)
close_playback_stream(id);
#endif
}
/*
* reads len samples from device id into psamp
* returns: number of values written to psamp , -1=error
* id ... device id returned by kmaudio_startCapture
* psamp ... float array of length len getting the audio data (mono)
* len ... number of float values to write into psamp
* volume ... 0.0f..2.0f will be multiplied with the input sample
* wait ... 1=wait for data, 0=return if not enough data available (in this case psamp will return 0,0,0...)
*
* if resampling is required the number of returned samples may differ from the number of requested samples
* it can be larger, so the buffer psamp should be larger than "len" by factor 1.1
*/
int kmaudio_readsamples(int id, float* psamp, int len, float volume, int wait)
{
int e = io_fifo_elems_avail(id);
if (e < len) return 0;
if (devlist[id].requested_samprate == devlist[id].real_samprate)
{
// data rate is ok, take samples as is
int nl = io_read_fifo_num(id, psamp, len);
for (int i = 0; i < nl; i++)
{
psamp[i] *= volume;
getMax(id, psamp[i]);
//kmaudio_detectDropouts(id);
}
return nl;
}
// resampling is required
int num = io_read_fifo_num(id, psamp, len);
if (num == 0) return 0;
int newlen = 0;
float *f = resample(id, psamp, len, &newlen);
for (int i = 0; i < newlen; i++)
{
psamp[i] = f[i] * volume;
getMax(id, psamp[i]);
}
return newlen;
}
/*
* plays len samples from psamp to device id
* returns: 0=ok, -1=error
* id ... device id returned by kmaudio_startPlayback
* psamp ... float array of length len with the audio data (mono)
* len ... number of float values in psamp
* volume ... 0.0f..2.0f will be multiplied with the output sample
*/
int kmaudio_playsamples(int id, float* psamp, int len, float volume)
{
// check if resampling is required
//printf("%d %d len:%d\n", devlist[id].requested_samprate , devlist[id].real_samprate,len);
/* Diagnostic: print buffer usage
static int xxx=0;
if(++xxx >= 10000)
{
xxx = 0;
printf("Pluto->sndcard fifo usage: %d\n",io_fifo_usedspace(id));
}*/
if (devlist[id].requested_samprate == devlist[id].real_samprate)
{
// sampling rate is ok, just play samples
for (int i = 0; i < len; i++)
{
io_write_fifo(id, psamp[i] * volume);
getMax(id, psamp[i] * volume);
}
return 0;
}
// resampling is required
int newlen = 0;
float *f = resample(id, psamp, len, &newlen);
for (int i = 0; i < newlen; i++)
{
io_write_fifo(id, f[i] * volume);
getMax(id, f[i] * volume);
}
return 0;
}
#define MCHECK 48000 // abt. 1s of samples
float farr[MAXDEVICES][MCHECK];
int farridx[MAXDEVICES];
void init_maxarray()
{
// initialize arrays
for (int md = 0; md < MAXDEVICES; md++)
{
farridx[md] = 0;
for (int i = 0; i < MCHECK; i++)
farr[md][i] = 0;
}
}
void getMax(int id, float fv)
{
// put value into array
farr[id][farridx[id]] = fv;
if (++farridx[id] == MCHECK)
farridx[id] = 0;
}
/*
* returns the max level (within 1 second) of this stream in % (0..100)
* if the level >= 100 the signal will get clipped and distorted
*/
uint8_t kmaudio_maxlevel(int id)
{
float max = 0;
for (int i = 0; i < MCHECK; i++)
if (farr[id][i] > max) max = farr[id][i];
return (uint8_t)(max * 100);
}
void kmaudio_detectDropouts(int id)
{
int stat = 0;
int drlen = 0;
for (int i = 0; i < MCHECK; i++)
{
switch (stat)
{
case 0: // search beginning of dropout
if (farr[id][i] == 0.0f)
stat = 1;
break;
case 1: // count length of dropout
if (farr[id][i] == 0.0f) drlen++;
else
{
// end of dropout
if (drlen > 0)
{
printf("Dropout len:%d\n", drlen);
}
drlen = 0;
stat = 0;
}
break;
}
}
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_playback.cpp ...
* starts a portaudio playback stream and a callback routine. Plays the
* audio samples coming via the fifo (Windows only)
*/
#include "libkmaudio.h"
#define FRAMES_PER_BUFFER 512
int playCallback(const void* inputBuffer,
void* outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void* userData);
void close_playback_stream(int idx)
{
if (devlist[idx].pbStream != NULL)
{
Pa_CloseStream(devlist[idx].pbStream);
devlist[idx].pbStream = NULL;
}
}
int kmaudio_startPlayback(char* devname, int samprate)
{
printf("Start request for PB stream:%s\n", devname);
if (devname == NULL || strlen(devname) < 3) // no devices defined yet
{
printf("no PB devices specified\n");
return -1;
}
int idx = searchDevice(devname, 1);
if (idx == -1)
{
printf("Playback Device:<%s> not found\n", devname);
return -1;
}
devlist[idx].working = 0;
close_playback_stream(idx);
printf("Starting PB stream:%s [%d]\n", devname, idx);
io_fifo_clear(idx);
devlist[idx].requested_samprate = samprate;
if (getRealSamprate(idx) == -1)
{
printf("Samplerate %d not supported by device:<%s>\n", samprate, devname);
return -1;
}
if (devlist[idx].requested_samprate != devlist[idx].real_samprate)
resampler_create(idx);
struct PaWasapiStreamInfo wasapiInfo;
memset(&wasapiInfo, 0, sizeof(PaWasapiStreamInfo));
wasapiInfo.size = sizeof(PaWasapiStreamInfo);
wasapiInfo.hostApiType = paWASAPI;
wasapiInfo.version = 1;
wasapiInfo.flags = (paWinWasapiExclusive | paWinWasapiThreadPriority);
wasapiInfo.threadPriority = eThreadPriorityProAudio;
devlist[idx].outputParameters.hostApiSpecificStreamInfo = (&wasapiInfo);
PaError e = Pa_IsFormatSupported(&devlist[idx].outputParameters, NULL, (double)devlist[idx].real_samprate);
printf("Playback : err:%d device:%d PAdev:%d samprate: %f chans:%d\n", e, idx, devlist[idx].devnum, (double)devlist[idx].real_samprate, devlist[idx].outputParameters.channelCount);
devlist[idx].index = idx;
int err = Pa_OpenStream(
&devlist[idx].pbStream,
NULL,
&devlist[idx].outputParameters,
(double)devlist[idx].real_samprate,
FRAMES_PER_BUFFER,
paClipOff,
playCallback,
&(devlist[idx].index));
if (err != paNoError)
{
printf("cannot open playback stream for device:<%s> %d\n", devname, err);
return -1;
}
err = Pa_StartStream(devlist[idx].pbStream);
if (err != paNoError)
{
printf("cannot start playback stream for device:<%s>\n", devname);
return -1;
}
printf("Playback started sucessfully\n");
devlist[idx].working = 1;
return idx;
}
int playCallback( const void* inputBuffer,
void* outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void* userData)
{
int16_t* rptr = (int16_t*)outputBuffer;
int devidx = *((int*)userData);
int chans = devlist[devidx].outputParameters.channelCount;
//measure_speed_bps(framesPerBuffer);
int16_t f[FRAMES_PER_BUFFER];
memset(f, 0, sizeof(int16_t) * FRAMES_PER_BUFFER);
unsigned int num = io_read_fifo_num_short(devidx, f, framesPerBuffer);
if (num < framesPerBuffer)
{
//printf("got %d from fifo, requested %d\n", num, framesPerBuffer);
}
int av = io_fifo_elems_avail(devidx);
for (unsigned int i = 0; i < framesPerBuffer; i++)
{
if (chans == 1) rptr[i] = f[i];
else
{
rptr[i * 2] = f[i];
rptr[i * 2 + 1] = f[i];
}
}
// Prevent unused variable warnings
(void)inputBuffer;
(void)timeInfo;
(void)statusFlags;
if (keeprunning == 1)
return paContinue;
return paComplete;
}

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_playback.cpp ...
* starts a libsoundio playback stream and a callback routine. Plays the
* audio samples coming via the fifo (Linux only)
*/
#ifndef WIN32
#include "libkmaudio.h"
// #define SINEWAVETEST
#ifdef SINEWAVETEST
static const double PI = 3.14159265358979323846264338328;
static double seconds_offset = 0.0;
#endif
void write_sample_float32ne(char* ptr, double sample)
{
float* buf = (float*)ptr;
*buf = (float)sample;
}
static void write_callback(struct SoundIoOutStream* outstream, int frame_count_min, int frame_count_max)
{
if (outstream == NULL || soundio == NULL) return;
//printf("pb: %d %d\n", frame_count_min, frame_count_max);
//printf("pb :%d\n", outstream->sample_rate);
int idx = *((int*)(outstream->userdata));
#ifdef SINEWAVETEST
double float_sample_rate = outstream->sample_rate;
double seconds_per_frame = 1.0 / float_sample_rate;
double pitch = 440.0;
double radians_per_second = pitch * 2.0 * PI;
#endif
struct SoundIoChannelArea* areas;
int err;
int frames_left = 4800;
if (frame_count_max < frames_left)
frames_left = frame_count_max;
for (;;) {
int frame_count = frames_left;
if ((err = soundio_outstream_begin_write(outstream, &areas, &frame_count))) {
fprintf(stderr, "write_callback unrecoverable soundio_outstream_begin_write error: %s\n", soundio_strerror(err));
return;
}
if (!frame_count)
break;
//printf("ck: %d read from fifo:%d\n", frame_count,idx);
if (frame_count >= 10000)
{
printf("frame count >= 1000: %d\n", frame_count);
exit(0);
}
float f[10000];
memset(f, 0, sizeof(float) * frame_count);
if (io_fifo_elems_avail(idx) >= frame_count)
{
// if fifo does not have enough data, don't take any
// this gives the fifo a chance to fill up a bit
io_read_fifo_num(idx, f, frame_count);
}
//measure_speed_bps(frame_count);
const struct SoundIoChannelLayout* layout = &outstream->layout;
for (int frame = 0; frame < frame_count; frame += 1)
{
#ifdef SINEWAVETEST
double sample = sin((seconds_offset + frame * seconds_per_frame) * radians_per_second);
#endif
for (int channel = 0; channel < layout->channel_count; channel += 1)
{
float ftx = f[frame];
//getTXMax(f[frame]);
#ifdef SINEWAVETEST
write_sample_float32ne(areas[channel].ptr, sample); // sine wave test tone
#endif
write_sample_float32ne(areas[channel].ptr, ftx);
areas[channel].ptr += areas[channel].step;
}
}
#ifdef SINEWAVETEST
seconds_offset = fmod(seconds_offset + seconds_per_frame * frame_count, 1.0);
#endif
if ((err = soundio_outstream_end_write(outstream))) {
if (err == SoundIoErrorUnderflow)
return;
fprintf(stderr, "unrecoverable stream error: %s\n", soundio_strerror(err));
return;
}
frames_left -= frame_count;
if (frames_left <= 0)
break;
}
}
void underflow_callback(struct SoundIoOutStream* outstream)
{
static int count = 0;
printf("audio output underflow %d\n", count++);
}
void close_playback_stream(int idx)
{
if (devlist[idx].outstream != NULL)
{
soundio_outstream_destroy(devlist[idx].outstream);
devlist[idx].outstream = NULL;
}
}
int kmaudio_startPlayback(char* devname, int samprate)
{
printf("Start request for PB stream:%s\n", devname);
if (devname == NULL || strlen(devname) < 3) // no devices defined yet
{
printf("no PB devices specified\n");
return -1;
}
int idx = 0; // index into devlist
char* pbdevid = getDevID(devname, 1, &idx);
if (pbdevid == NULL)
{
printf("PB: Device ID not found\n");
return -1;
}
close_playback_stream(idx);
printf("Starting PB stream:%s [%d]\n", devname, idx);
io_fifo_clear(idx);
devlist[idx].working = 0;
// define the capture device
soundio_flush_events(soundio);
for (int i = 0; i < soundio_output_device_count(soundio); i++)
{
devlist[idx].io_pb_device = NULL;
struct SoundIoDevice* device = soundio_get_output_device(soundio, i);
if (strcmp(device->id, pbdevid) == 0)
{
devlist[idx].io_pb_device = device;
break;
}
soundio_device_unref(device);
}
if (!devlist[idx].io_pb_device)
{
printf("Invalid device id: %s\n", pbdevid);
return -1;
}
if (devlist[idx].io_pb_device->probe_error)
{
printf("Unable to probe device: %s\n", soundio_strerror(devlist[idx].io_pb_device->probe_error));
return -1;
}
// create playback callback
devlist[idx].outstream = soundio_outstream_create(devlist[idx].io_pb_device);
if (!devlist[idx].outstream) {
printf("soundio_outstream_create: out of memory\n");
return 0;
}
devlist[idx].requested_samprate = samprate;
if (getRealSamprate(idx) == -1)
{
printf("Samplerate %d not supported by device:<%s>\n", samprate, devname);
return -1;
}
//printf("requested SR:%d, real SR:%d\n",devlist[idx].requested_samprate, devlist[idx].real_samprate);
if (devlist[idx].requested_samprate != devlist[idx].real_samprate)
resampler_create(idx);
devlist[idx].outstream->format = SoundIoFormatFloat32NE;
devlist[idx].outstream->sample_rate = devlist[idx].real_samprate;
devlist[idx].outstream->software_latency = 0.1f;
devlist[idx].outstream->write_callback = write_callback;
devlist[idx].outstream->underflow_callback = underflow_callback;
devlist[idx].outstream->userdata = &(devlist[idx].index);
int err = 0;
if ((err = soundio_outstream_open(devlist[idx].outstream))) {
printf("unable to open output stream: %s", soundio_strerror(err));
return -1;
}
if ((err = soundio_outstream_start(devlist[idx].outstream))) {
printf("unable to start output device: %s", soundio_strerror(err));
return -1;
}
printf("selected PLAYBACK device:\nname:%s\nid :%s\n", devname, pbdevid);
printf("physical playback rate:%d, requested capture rate:%d\n", devlist[idx].real_samprate, devlist[idx].requested_samprate);
printf("format: %s\n\n", soundio_format_string(devlist[idx].outstream->format));
devlist[idx].working = 1;
return idx;
}
#endif // ndef WIN32

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/*
* Audio Library for Linux and Windows
* ===================================
* Author: DJ0ABR
*
* Author: Kurt Moraw, Ham radio: DJ0ABR, github: dj0abr
* License: GPL-3
*
* compilation:
* Windows ... Visual Studio
* Linux ... make
*
* Documentation see: libkmaudio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* libkmaudio_resampler.cpp ... converts audio streams
* between 44100 and 48000 samples/s in both directions
* uses the libliquid library
*/
#include "libkmaudio.h"
#define MAXRLEN 10000
resamp_crcf q[MAXDEVICES];
float fresamp[MAXDEVICES][MAXRLEN];
unsigned int h_len = 13; // filter semi-length (filter delay)
float r = 0.9f; // resampling rate (output/input)
float bw = 0.45f; // resampling filter bandwidth
float slsl = 60.0f; // resampling filter sidelobe suppression level
unsigned int npfb = 32; // number of filters in bank (timing resolution)
void resampler_create(int devidx)
{
static int f = 1;
if(f)
{
f = 0;
for (int i = 0; i < MAXDEVICES; i++)
q[i] = NULL;
}
printf("create resampler %d real %d req %d\n", devidx, devlist[devidx].real_samprate, devlist[devidx].requested_samprate);
if (q[devidx] != NULL) resamp_crcf_destroy(q[devidx]);
int src_rate = 0;
int dst_rate = 0;
if (devlist[devidx].in_out == 0)
{
// capture device:
src_rate = devlist[devidx].real_samprate;
dst_rate = devlist[devidx].requested_samprate;
}
else
{
// playback device:
src_rate = devlist[devidx].requested_samprate;
dst_rate = devlist[devidx].real_samprate;
}
r = (float)dst_rate / (float)src_rate;
//printf("%f %f %f\n", r, (float)dst_rate, (float)src_rate);
q[devidx] = resamp_crcf_create(r, h_len, bw, slsl, npfb);
}
float* resample(int id, float*psamp, int len, int *pnewlen)
{
int didx = 0;
for (int i = 0; i < len; i++)
{
unsigned int num_written = 0;
liquid_float_complex in;
liquid_float_complex out[10];
in.real = psamp[i];
in.imag = 0;
resamp_crcf_execute(q[id], in, out, &num_written);
for (unsigned int r = 0; r < num_written; r++)
{
if (didx < MAXRLEN)
fresamp[id][didx++] = out[r].real;
else
printf("MAXRLEN too small\n");
}
}
*pnewlen = didx;
return fresamp[id];
}

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#ifndef PA_WIN_WASAPI_H
#define PA_WIN_WASAPI_H
/*
* $Id: $
* PortAudio Portable Real-Time Audio Library
* DirectSound specific extensions
*
* Copyright (c) 1999-2007 Ross Bencina and Phil Burk
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief WASAPI-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#include "pa_win_waveformat.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* Setup flags */
typedef enum PaWasapiFlags
{
/* puts WASAPI into exclusive mode */
paWinWasapiExclusive = (1 << 0),
/* allows to skip internal PA processing completely */
paWinWasapiRedirectHostProcessor = (1 << 1),
/* assigns custom channel mask */
paWinWasapiUseChannelMask = (1 << 2),
/* selects non-Event driven method of data read/write
Note: WASAPI Event driven core is capable of 2ms latency!!!, but Polling
method can only provide 15-20ms latency. */
paWinWasapiPolling = (1 << 3),
/* forces custom thread priority setting, must be used if PaWasapiStreamInfo::threadPriority
is set to a custom value */
paWinWasapiThreadPriority = (1 << 4)
}
PaWasapiFlags;
#define paWinWasapiExclusive (paWinWasapiExclusive)
#define paWinWasapiRedirectHostProcessor (paWinWasapiRedirectHostProcessor)
#define paWinWasapiUseChannelMask (paWinWasapiUseChannelMask)
#define paWinWasapiPolling (paWinWasapiPolling)
#define paWinWasapiThreadPriority (paWinWasapiThreadPriority)
/* Host processor. Allows to skip internal PA processing completely.
You must set paWinWasapiRedirectHostProcessor flag to PaWasapiStreamInfo::flags member
in order to have host processor redirected to your callback.
Use with caution! inputFrames and outputFrames depend solely on final device setup.
To query maximal values of inputFrames/outputFrames use PaWasapi_GetFramesPerHostBuffer.
*/
typedef void (*PaWasapiHostProcessorCallback) (void *inputBuffer, long inputFrames,
void *outputBuffer, long outputFrames,
void *userData);
/* Device role. */
typedef enum PaWasapiDeviceRole
{
eRoleRemoteNetworkDevice = 0,
eRoleSpeakers,
eRoleLineLevel,
eRoleHeadphones,
eRoleMicrophone,
eRoleHeadset,
eRoleHandset,
eRoleUnknownDigitalPassthrough,
eRoleSPDIF,
eRoleHDMI,
eRoleUnknownFormFactor
}
PaWasapiDeviceRole;
/* Jack connection type. */
typedef enum PaWasapiJackConnectionType
{
eJackConnTypeUnknown,
eJackConnType3Point5mm,
eJackConnTypeQuarter,
eJackConnTypeAtapiInternal,
eJackConnTypeRCA,
eJackConnTypeOptical,
eJackConnTypeOtherDigital,
eJackConnTypeOtherAnalog,
eJackConnTypeMultichannelAnalogDIN,
eJackConnTypeXlrProfessional,
eJackConnTypeRJ11Modem,
eJackConnTypeCombination
}
PaWasapiJackConnectionType;
/* Jack geometric location. */
typedef enum PaWasapiJackGeoLocation
{
eJackGeoLocUnk = 0,
eJackGeoLocRear = 0x1, /* matches EPcxGeoLocation::eGeoLocRear */
eJackGeoLocFront,
eJackGeoLocLeft,
eJackGeoLocRight,
eJackGeoLocTop,
eJackGeoLocBottom,
eJackGeoLocRearPanel,
eJackGeoLocRiser,
eJackGeoLocInsideMobileLid,
eJackGeoLocDrivebay,
eJackGeoLocHDMI,
eJackGeoLocOutsideMobileLid,
eJackGeoLocATAPI,
eJackGeoLocReserved5,
eJackGeoLocReserved6,
}
PaWasapiJackGeoLocation;
/* Jack general location. */
typedef enum PaWasapiJackGenLocation
{
eJackGenLocPrimaryBox = 0,
eJackGenLocInternal,
eJackGenLocSeparate,
eJackGenLocOther
}
PaWasapiJackGenLocation;
/* Jack's type of port. */
typedef enum PaWasapiJackPortConnection
{
eJackPortConnJack = 0,
eJackPortConnIntegratedDevice,
eJackPortConnBothIntegratedAndJack,
eJackPortConnUnknown
}
PaWasapiJackPortConnection;
/* Thread priority. */
typedef enum PaWasapiThreadPriority
{
eThreadPriorityNone = 0,
eThreadPriorityAudio, //!< Default for Shared mode.
eThreadPriorityCapture,
eThreadPriorityDistribution,
eThreadPriorityGames,
eThreadPriorityPlayback,
eThreadPriorityProAudio, //!< Default for Exclusive mode.
eThreadPriorityWindowManager
}
PaWasapiThreadPriority;
/* Stream descriptor. */
typedef struct PaWasapiJackDescription
{
unsigned long channelMapping;
unsigned long color; /* derived from macro: #define RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16))) */
PaWasapiJackConnectionType connectionType;
PaWasapiJackGeoLocation geoLocation;
PaWasapiJackGenLocation genLocation;
PaWasapiJackPortConnection portConnection;
unsigned int isConnected;
}
PaWasapiJackDescription;
/** Stream category.
Note:
- values are equal to WASAPI AUDIO_STREAM_CATEGORY enum
- supported since Windows 8.0, noop on earler versions
- values 1,2 are deprecated on Windows 10 and not included into enumeration
@version Available as of 19.6.0
*/
typedef enum PaWasapiStreamCategory
{
eAudioCategoryOther = 0,
eAudioCategoryCommunications = 3,
eAudioCategoryAlerts = 4,
eAudioCategorySoundEffects = 5,
eAudioCategoryGameEffects = 6,
eAudioCategoryGameMedia = 7,
eAudioCategoryGameChat = 8,
eAudioCategorySpeech = 9,
eAudioCategoryMovie = 10,
eAudioCategoryMedia = 11
}
PaWasapiStreamCategory;
/** Stream option.
Note:
- values are equal to WASAPI AUDCLNT_STREAMOPTIONS enum
- supported since Windows 8.1, noop on earler versions
@version Available as of 19.6.0
*/
typedef enum PaWasapiStreamOption
{
eStreamOptionNone = 0, //!< default
eStreamOptionRaw = 1, //!< bypass WASAPI Audio Engine DSP effects, supported since Windows 8.1
eStreamOptionMatchFormat = 2 //!< force WASAPI Audio Engine into a stream format, supported since Windows 10
}
PaWasapiStreamOption;
/* Stream descriptor. */
typedef struct PaWasapiStreamInfo
{
unsigned long size; /**< sizeof(PaWasapiStreamInfo) */
PaHostApiTypeId hostApiType; /**< paWASAPI */
unsigned long version; /**< 1 */
unsigned long flags; /**< collection of PaWasapiFlags */
/** Support for WAVEFORMATEXTENSIBLE channel masks. If flags contains
paWinWasapiUseChannelMask this allows you to specify which speakers
to address in a multichannel stream. Constants for channelMask
are specified in pa_win_waveformat.h. Will be used only if
paWinWasapiUseChannelMask flag is specified.
*/
PaWinWaveFormatChannelMask channelMask;
/** Delivers raw data to callback obtained from GetBuffer() methods skipping
internal PortAudio processing inventory completely. userData parameter will
be the same that was passed to Pa_OpenStream method. Will be used only if
paWinWasapiRedirectHostProcessor flag is specified.
*/
PaWasapiHostProcessorCallback hostProcessorOutput;
PaWasapiHostProcessorCallback hostProcessorInput;
/** Specifies thread priority explicitly. Will be used only if paWinWasapiThreadPriority flag
is specified.
Please note, if Input/Output streams are opened simultaniously (Full-Duplex mode)
you shall specify same value for threadPriority or othervise one of the values will be used
to setup thread priority.
*/
PaWasapiThreadPriority threadPriority;
/** Stream category.
@see PaWasapiStreamCategory
@version Available as of 19.6.0
*/
PaWasapiStreamCategory streamCategory;
/** Stream option.
@see PaWasapiStreamOption
@version Available as of 19.6.0
*/
PaWasapiStreamOption streamOption;
}
PaWasapiStreamInfo;
/** Returns default sound format for device. Format is represented by PaWinWaveFormat or
WAVEFORMATEXTENSIBLE structure.
@param pFormat Pointer to PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure.
@param nFormatSize Size of PaWinWaveFormat or WAVEFORMATEXTENSIBLE structure in bytes.
@param nDevice Device index.
@return Non-negative value indicating the number of bytes copied into format decriptor
or, a PaErrorCode (which are always negative) if PortAudio is not initialized
or an error is encountered.
*/
int PaWasapi_GetDeviceDefaultFormat( void *pFormat, unsigned int nFormatSize, PaDeviceIndex nDevice );
/** Returns device role (PaWasapiDeviceRole enum).
@param nDevice device index.
@return Non-negative value indicating device role or, a PaErrorCode (which are always negative)
if PortAudio is not initialized or an error is encountered.
*/
int/*PaWasapiDeviceRole*/ PaWasapi_GetDeviceRole( PaDeviceIndex nDevice );
/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
which makes calls to Pa_WriteStream/Pa_ReadStream.
@param hTask Handle to pointer to priority task. Must be used with PaWasapi_RevertThreadPriority
method to revert thread priority to initial state.
@param nPriorityClass Id of thread priority of PaWasapiThreadPriority type. Specifying
eThreadPriorityNone does nothing.
@return Error code indicating success or failure.
@see PaWasapi_RevertThreadPriority
*/
PaError PaWasapi_ThreadPriorityBoost( void **hTask, PaWasapiThreadPriority nPriorityClass );
/** Boost thread priority of calling thread (MMCSS). Use it for Blocking Interface only for thread
which makes calls to Pa_WriteStream/Pa_ReadStream.
@param hTask Task handle obtained by PaWasapi_BoostThreadPriority method.
@return Error code indicating success or failure.
@see PaWasapi_BoostThreadPriority
*/
PaError PaWasapi_ThreadPriorityRevert( void *hTask );
/** Get number of frames per host buffer. This is maximal value of frames of WASAPI buffer which
can be locked for operations. Use this method as helper to findout maximal values of
inputFrames/outputFrames of PaWasapiHostProcessorCallback.
@param pStream Pointer to PaStream to query.
@param nInput Pointer to variable to receive number of input frames. Can be NULL.
@param nOutput Pointer to variable to receive number of output frames. Can be NULL.
@return Error code indicating success or failure.
@see PaWasapiHostProcessorCallback
*/
PaError PaWasapi_GetFramesPerHostBuffer( PaStream *pStream, unsigned int *nInput, unsigned int *nOutput );
/** Get number of jacks associated with a WASAPI device. Use this method to determine if
there are any jacks associated with the provided WASAPI device. Not all audio devices
will support this capability. This is valid for both input and output devices.
@param nDevice device index.
@param jcount Number of jacks is returned in this variable
@return Error code indicating success or failure
@see PaWasapi_GetJackDescription
*/
PaError PaWasapi_GetJackCount(PaDeviceIndex nDevice, int *jcount);
/** Get the jack description associated with a WASAPI device and jack number
Before this function is called, use PaWasapi_GetJackCount to determine the
number of jacks associated with device. If jcount is greater than zero, then
each jack from 0 to jcount can be queried with this function to get the jack
description.
@param nDevice device index.
@param jindex Which jack to return information
@param KSJACK_DESCRIPTION This structure filled in on success.
@return Error code indicating success or failure
@see PaWasapi_GetJackCount
*/
PaError PaWasapi_GetJackDescription(PaDeviceIndex nDevice, int jindex, PaWasapiJackDescription *pJackDescription);
/*
IMPORTANT:
WASAPI is implemented for Callback and Blocking interfaces. It supports Shared and Exclusive
share modes.
Exclusive Mode:
Exclusive mode allows to deliver audio data directly to hardware bypassing
software mixing.
Exclusive mode is specified by 'paWinWasapiExclusive' flag.
Callback Interface:
Provides best audio quality with low latency. Callback interface is implemented in
two versions:
1) Event-Driven:
This is the most powerful WASAPI implementation which provides glitch-free
audio at around 3ms latency in Exclusive mode. Lowest possible latency for this mode is
3 ms for HD Audio class audio chips. For the Shared mode latency can not be
lower than 20 ms.
2) Poll-Driven:
Polling is another 2-nd method to operate with WASAPI. It is less efficient than Event-Driven
and provides latency at around 10-13ms. Polling must be used to overcome a system bug
under Windows Vista x64 when application is WOW64(32-bit) and Event-Driven method simply
times out (event handle is never signalled on buffer completion). Please note, such WOW64 bug
does not exist in Vista x86 or Windows 7.
Polling can be setup by speciying 'paWinWasapiPolling' flag. Our WASAPI implementation detects
WOW64 bug and sets 'paWinWasapiPolling' automatically.
Thread priority:
Normally thread priority is set automatically and does not require modification. Although
if user wants some tweaking thread priority can be modified by setting 'paWinWasapiThreadPriority'
flag and specifying 'PaWasapiStreamInfo::threadPriority' with value from PaWasapiThreadPriority
enum.
Blocking Interface:
Blocking interface is implemented but due to above described Poll-Driven method can not
deliver lowest possible latency. Specifying too low latency in Shared mode will result in
distorted audio although Exclusive mode adds stability.
Pa_IsFormatSupported:
To check format with correct Share Mode (Exclusive/Shared) you must supply
PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of
PaStreamParameters::hostApiSpecificStreamInfo structure.
Pa_OpenStream:
To set desired Share Mode (Exclusive/Shared) you must supply
PaWasapiStreamInfo with flags paWinWasapiExclusive set through member of
PaStreamParameters::hostApiSpecificStreamInfo structure.
*/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WASAPI_H */

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#ifndef PA_WIN_WAVEFORMAT_H
#define PA_WIN_WAVEFORMAT_H
/*
* PortAudio Portable Real-Time Audio Library
* Windows WAVEFORMAT* data structure utilities
* portaudio.h should be included before this file.
*
* Copyright (c) 2007 Ross Bencina
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version. It is also
* requested that these non-binding requests be included along with the
* license above.
*/
/** @file
@ingroup public_header
@brief Windows specific PortAudio API extension and utilities header file.
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
The following #defines for speaker channel masks are the same
as those in ksmedia.h, except with PAWIN_ prepended, KSAUDIO_ removed
in some cases, and casts to PaWinWaveFormatChannelMask added.
*/
typedef unsigned long PaWinWaveFormatChannelMask;
/* Speaker Positions: */
#define PAWIN_SPEAKER_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1)
#define PAWIN_SPEAKER_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x2)
#define PAWIN_SPEAKER_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x4)
#define PAWIN_SPEAKER_LOW_FREQUENCY ((PaWinWaveFormatChannelMask)0x8)
#define PAWIN_SPEAKER_BACK_LEFT ((PaWinWaveFormatChannelMask)0x10)
#define PAWIN_SPEAKER_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20)
#define PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER ((PaWinWaveFormatChannelMask)0x40)
#define PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER ((PaWinWaveFormatChannelMask)0x80)
#define PAWIN_SPEAKER_BACK_CENTER ((PaWinWaveFormatChannelMask)0x100)
#define PAWIN_SPEAKER_SIDE_LEFT ((PaWinWaveFormatChannelMask)0x200)
#define PAWIN_SPEAKER_SIDE_RIGHT ((PaWinWaveFormatChannelMask)0x400)
#define PAWIN_SPEAKER_TOP_CENTER ((PaWinWaveFormatChannelMask)0x800)
#define PAWIN_SPEAKER_TOP_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1000)
#define PAWIN_SPEAKER_TOP_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x2000)
#define PAWIN_SPEAKER_TOP_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x4000)
#define PAWIN_SPEAKER_TOP_BACK_LEFT ((PaWinWaveFormatChannelMask)0x8000)
#define PAWIN_SPEAKER_TOP_BACK_CENTER ((PaWinWaveFormatChannelMask)0x10000)
#define PAWIN_SPEAKER_TOP_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20000)
/* Bit mask locations reserved for future use */
#define PAWIN_SPEAKER_RESERVED ((PaWinWaveFormatChannelMask)0x7FFC0000)
/* Used to specify that any possible permutation of speaker configurations */
#define PAWIN_SPEAKER_ALL ((PaWinWaveFormatChannelMask)0x80000000)
/* DirectSound Speaker Config */
#define PAWIN_SPEAKER_DIRECTOUT 0
#define PAWIN_SPEAKER_MONO (PAWIN_SPEAKER_FRONT_CENTER)
#define PAWIN_SPEAKER_STEREO (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT)
#define PAWIN_SPEAKER_QUAD (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
#define PAWIN_SPEAKER_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_BACK_CENTER)
#define PAWIN_SPEAKER_5POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
#define PAWIN_SPEAKER_7POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER | PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER)
#define PAWIN_SPEAKER_5POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
#define PAWIN_SPEAKER_7POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
/*
According to the Microsoft documentation:
The following are obsolete 5.1 and 7.1 settings (they lack side speakers). Note this means
that the default 5.1 and 7.1 settings (KSAUDIO_SPEAKER_5POINT1 and KSAUDIO_SPEAKER_7POINT1 are
similarly obsolete but are unchanged for compatibility reasons).
*/
#define PAWIN_SPEAKER_5POINT1_BACK PAWIN_SPEAKER_5POINT1
#define PAWIN_SPEAKER_7POINT1_WIDE PAWIN_SPEAKER_7POINT1
/* DVD Speaker Positions */
#define PAWIN_SPEAKER_GROUND_FRONT_LEFT PAWIN_SPEAKER_FRONT_LEFT
#define PAWIN_SPEAKER_GROUND_FRONT_CENTER PAWIN_SPEAKER_FRONT_CENTER
#define PAWIN_SPEAKER_GROUND_FRONT_RIGHT PAWIN_SPEAKER_FRONT_RIGHT
#define PAWIN_SPEAKER_GROUND_REAR_LEFT PAWIN_SPEAKER_BACK_LEFT
#define PAWIN_SPEAKER_GROUND_REAR_RIGHT PAWIN_SPEAKER_BACK_RIGHT
#define PAWIN_SPEAKER_TOP_MIDDLE PAWIN_SPEAKER_TOP_CENTER
#define PAWIN_SPEAKER_SUPER_WOOFER PAWIN_SPEAKER_LOW_FREQUENCY
/*
PaWinWaveFormat is defined here to provide compatibility with
compilation environments which don't have headers defining
WAVEFORMATEXTENSIBLE (e.g. older versions of MSVC, Borland C++ etc.
The fields for WAVEFORMATEX and WAVEFORMATEXTENSIBLE are declared as an
unsigned char array here to avoid clients who include this file having
a dependency on windows.h and mmsystem.h, and also to to avoid having
to write separate packing pragmas for each compiler.
*/
#define PAWIN_SIZEOF_WAVEFORMATEX 18
#define PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE (PAWIN_SIZEOF_WAVEFORMATEX + 22)
typedef struct{
unsigned char fields[ PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE ];
unsigned long extraLongForAlignment; /* ensure that compiler aligns struct to DWORD */
} PaWinWaveFormat;
/*
WAVEFORMATEXTENSIBLE fields:
union {
WORD wValidBitsPerSample;
WORD wSamplesPerBlock;
WORD wReserved;
} Samples;
DWORD dwChannelMask;
GUID SubFormat;
*/
#define PAWIN_INDEXOF_WVALIDBITSPERSAMPLE (PAWIN_SIZEOF_WAVEFORMATEX+0)
#define PAWIN_INDEXOF_DWCHANNELMASK (PAWIN_SIZEOF_WAVEFORMATEX+2)
#define PAWIN_INDEXOF_SUBFORMAT (PAWIN_SIZEOF_WAVEFORMATEX+6)
/*
Valid values to pass for the waveFormatTag PaWin_InitializeWaveFormatEx and
PaWin_InitializeWaveFormatExtensible functions below. These must match
the standard Windows WAVE_FORMAT_* values.
*/
#define PAWIN_WAVE_FORMAT_PCM (1)
#define PAWIN_WAVE_FORMAT_IEEE_FLOAT (3)
#define PAWIN_WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092)
#define PAWIN_WAVE_FORMAT_WMA_SPDIF (0x0164)
/*
returns PAWIN_WAVE_FORMAT_PCM or PAWIN_WAVE_FORMAT_IEEE_FLOAT
depending on the sampleFormat parameter.
*/
int PaWin_SampleFormatToLinearWaveFormatTag( PaSampleFormat sampleFormat );
/*
Use the following two functions to initialize the waveformat structure.
*/
void PaWin_InitializeWaveFormatEx( PaWinWaveFormat *waveFormat,
int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate );
void PaWin_InitializeWaveFormatExtensible( PaWinWaveFormat *waveFormat,
int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate,
PaWinWaveFormatChannelMask channelMask );
/* Map a channel count to a speaker channel mask */
PaWinWaveFormatChannelMask PaWin_DefaultChannelMask( int numChannels );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WAVEFORMAT_H */

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