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