mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-10-31 04:50:34 -04:00
ecbba95ca8
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@268 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
307 lines
8.0 KiB
C
307 lines
8.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <inttypes.h>
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#include <time.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <sys/soundcard.h>
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#include <string.h>
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#define AUDIOBUFSIZE 4096
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#define FRAMESPERBUFFER 1024
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#define TIMEOUT 1000L /* select time out for audio device */
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/* XXX probably safer to use a local buffer due to the wsjt threaded nature. */
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static char rcv_buf[AUDIOBUFSIZE];
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static char tx_buf[AUDIOBUFSIZE];
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#define MAXDSPNAME 16
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extern void decode1_(int *iarg);
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void oss_loop(int *iarg);
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/*
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* local state data referencing some gcom common fortran variables as well
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*/
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static struct audio_data {
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int fd_in; /* Audio fd in; used only locally in this function */
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int fd_out; /* Audio fd out; used only locally in this function */
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double *Tsec; /* Present time SoundIn,SoundOut */
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double *tbuf; /* Tsec at time of input callback SoundIn */
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int *iwrite; /* Write pointer to Rx ring buffer SoundIn */
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int *ibuf; /* Most recent input buffer# SoundIn */
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int *TxOK; /* OK to transmit? SoundIn */
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int *ndebug; /* Write debugging info? GUI */
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int *ndsec; /* Dsec in units of 0.1 s GUI */
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int *Transmitting; /* Actually transmitting? SoundOut */
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int *nwave; /* Number of samples in iwave SoundIn */
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int *nmode; /* Which WSJT mode? GUI */
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int *trperiod; /* Tx or Rx period in seconds GUI */
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int nbuflen;
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int nfs;
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int16_t *y1; /* Ring buffer for audio channel 0 SoundIn */
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int16_t *y2; /* Ring buffer for audio channel 1 SoundIn */
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short *iwave;
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}data;
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/*
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* start_threads()
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* inputs - ndevin device number for input
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* - ndevout device number for output
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* - y1 short int array for channel 0
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* - y2 short int array for channel 1
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* - nmax
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* - iwrite
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* - iwave
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* - nwave
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* - rate
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* - NSPB
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* - TRPeriod
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* - TxOK
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* - ndebug debug output or not?
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* - Transmitting
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* - Tsec
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* - ngo
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* - nmode
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* - tbuf
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* - ibuf
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* - ndsec
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* output - ?
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* side effects - Called from audio_init.f90 to start audio decode and
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* OSS thread.
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*/
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int
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start_threads_(int *ndevin, int *ndevout, short y1[], short y2[],
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int *nbuflen, int *iwrite, short iwave[],
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int *nwave, int *nfsample, int *nsamperbuf,
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int *TRPeriod, int *TxOK, int *ndebug,
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int *Transmitting, double *Tsec, int *ngo, int *nmode,
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double tbuf[], int *ibuf, int *ndsec,
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char *PttPort, char *devin_name, char *devout_name)
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{
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pthread_t thread1,thread2;
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int iret1,iret2;
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int iarg1 = 1,iarg2 = 2;
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int32_t rate=*nfsample;
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int samplesize;
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int format;
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int channels;
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double dnfs;
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int i;
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char *p;
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/* Remove space if present */
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p = strchr(devin_name, ' ');
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if(p != NULL)
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*p = '\0';
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p = strchr(devout_name, ' ');
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if(p != NULL)
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*p = '\0';
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data.fd_in = open(devin_name, O_RDONLY, 0);
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if(data.fd_in < 0) {
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fprintf(stderr, "Cannot open %s for input.\n", devin_name);
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return (-1);
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}
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if (*devout_name == '\0') {
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close(data.fd_in);
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data.fd_in = open(devin_name, O_RDWR, 0);
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if(data.fd_in < 0) {
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fprintf(stderr, "Cannot open %s for input.\n", devin_name);
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return (-1);
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}
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data.fd_out = data.fd_in;
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if(ioctl(data.fd_in, SNDCTL_DSP_SETDUPLEX, 0) < 0) {
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fprintf(stderr, "Cannot use %s for full duplex.\n", devin_name);
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return(-1);
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}
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} else {
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data.fd_out = open(devout_name, O_WRONLY, 0);
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if(data.fd_out < 0) {
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fprintf(stderr, "Cannot open %s for output.\n", devout_name);
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return (-1);
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}
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}
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data.Tsec = Tsec;
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data.tbuf = tbuf;
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data.iwrite = iwrite;
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data.ibuf = ibuf;
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data.TxOK = TxOK;
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data.ndebug = ndebug;
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data.ndsec = ndsec;
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data.Transmitting = Transmitting;
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data.y1 = y1;
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data.y2 = y2;
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data.nbuflen = *nbuflen;
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data.nmode = nmode;
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data.nwave = nwave;
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data.iwave = iwave;
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data.nfs = *nfsample;
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data.trperiod = TRPeriod;
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dnfs=(double)*nfsample;
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channels = 2;
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if(ioctl (data.fd_in, SNDCTL_DSP_CHANNELS, &channels) == -1) {
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fprintf (stderr, "Unable to set 2 channels for input.\n");
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return (-1);
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}
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if(channels != 2) {
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fprintf (stderr, "Unable to set 2 channels.\n");
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return (-1);
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}
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format = AFMT_S16_NE;
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if(ioctl (data.fd_in, SNDCTL_DSP_SETFMT, &format) == -1) {
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fprintf (stderr, "Unable to set format for input.\n");
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return (-1);
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}
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if(ioctl (data.fd_in, SNDCTL_DSP_SPEED, &rate) == -1) {
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fprintf (stderr, "Unable to set rate for input\n");
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return (-1);
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}
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printf("Audio OSS streams running normally.\n");
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printf("******************************************************************\n");
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printf("Opened %s for input.\n", devin_name);
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if (*devout_name != '\0')
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printf("Opened %s for output.\n", devout_name);
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else
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printf("Opened %s for output.\n", devin_name);
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printf("Rate set = %d\n", rate);
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// printf("start_threads: creating thread for oss_loop\n");
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iret1 = pthread_create(&thread1, NULL,
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(void *(*)(void *))oss_loop, &iarg1);
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// printf("start_threads: creating thread for decode1_\n");
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iret2 = pthread_create(&thread2, NULL,
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(void *(*)(void *))decode1_,&iarg2);
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}
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/*
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* oss_loop
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*
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* inputs - int pointer NOT USED
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* output - none
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* side effects -
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*/
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void
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oss_loop(int *iarg)
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{
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fd_set readfds, writefds;
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int nfds = 0;
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struct timeval timeout = {0, 0};
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struct timeval tv;
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int nread;
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unsigned int i;
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static int n=0;
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static int n2=0;
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static int ia=0;
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static int ib=0;
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static int ic=0;
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static int16_t *in;
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static int16_t *wptr;
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static int TxOKz=0;
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static int ncall=0;
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static int nsec=0;
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static double stime;
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for (;;) {
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FD_ZERO(&readfds );
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FD_ZERO(&writefds );
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FD_SET(data.fd_in, &readfds);
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FD_SET(data.fd_out, &writefds);
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timeout.tv_usec = TIMEOUT;
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if(select(FD_SETSIZE, &readfds, &writefds, NULL, &timeout) > 0) {
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if(FD_ISSET(data.fd_in, &readfds)) {
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nread = read (data.fd_in, rcv_buf, AUDIOBUFSIZE);
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if(nread <= 0) {
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fprintf(stderr, "Read error %d\n", nread);
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return;
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}
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if(nread == AUDIOBUFSIZE) {
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/* Get System time */
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gettimeofday(&tv, NULL);
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stime = (double) tv.tv_sec + ((double)tv.tv_usec / 1000000.0) +
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*(data.ndsec) * 0.1;
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*(data.Tsec) = stime;
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ncall++;
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/* increment buffer pointers only if data available */
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ia=*(data.iwrite);
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ib=*(data.ibuf);
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data.tbuf[ib-1] = stime; /* convert to c index to store */
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ib++;
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if(ib>FRAMESPERBUFFER)
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ib=1;
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*(data.ibuf) = ib;
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in = (int16_t *)rcv_buf; /* XXX */
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for(i=0; i<FRAMESPERBUFFER; i++) {
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data.y1[ia] = (*in++);
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data.y2[ia] = (*in++);
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ia++;
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}
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if(ia >= data.nbuflen)
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ia=0; //Wrap buffer pointer if necessary
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*(data.iwrite) = ia; /* Save buffer pointer */
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fivehz_(); /* Call fortran routine */
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}
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}
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if(FD_ISSET(data.fd_in, &writefds)) {
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/* Get System time */
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gettimeofday(&tv, NULL);
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stime = (double) tv.tv_sec + ((double)tv.tv_usec / 1000000.0) +
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*(data.ndsec) * 0.1;
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*(data.Tsec) = stime;
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if(*(data.TxOK) && (!TxOKz)) {
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nsec = (int)stime;
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n = nsec / *(data.trperiod);
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ic = (int)(stime - *(data.trperiod) * n) * data.nfs;
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ic = ic % *(data.nwave);
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}
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TxOKz = *(data.TxOK);
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*(data.Transmitting) = *(data.TxOK);
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wptr = (int16_t *)tx_buf; /* XXX */
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if(*(data.TxOK)) {
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for(i=0 ; i<FRAMESPERBUFFER; i++) {
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n2 = data.iwave[ic];
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addnoise_(&n2);
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*wptr++ = n2; /* left */
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*wptr++ = n2; /* right */
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ic++;
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if(ic >= *(data.nwave)) {
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ic = ic % *(data.nwave); /* Wrap buffer pointer if necessary */
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if(*(data.nmode) == 2)
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*(data.TxOK) = 0;
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}
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}
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} else {
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memset(tx_buf, 0, AUDIOBUFSIZE);
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}
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if(write(data.fd_out, tx_buf, AUDIOBUFSIZE) < 0) {
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fprintf(stderr, "Can't write to soundcard.\n");
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return;
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}
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fivehztx_(); /* Call fortran routine */
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}
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}
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}
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}
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