mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-08-24 15:16:36 -04:00
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@176 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
394 lines
9.9 KiB
C
394 lines
9.9 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 <jack/types.h>
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#include <jack/jack.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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char rcv_buf[AUDIOBUFSIZE]; /* XXX grab one from upper app later --db */
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char tx_buf[AUDIOBUFSIZE]; /* XXX grab one from upper app later --db */
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/*
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* Lots of pieces stolen directly from jack simple_client.c
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*/
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jack_port_t *input_port;
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jack_port_t *output_port;
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jack_client_t *client;
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void jack_read(void);
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void jack_write(void);
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/* a simple state machine for this client */
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volatile enum {
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Init,
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Run,
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Exit
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} client_state = Init;
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extern void decode1_(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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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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* The process callback for this JACK application is called in a
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* special realtime thread once for each audio cycle.
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*
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* This client follows a simple rule: when the JACK transport is
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* running, copy the input port to the output. When it stops, exit.
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*/
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int
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process (jack_nframes_t nframes, void *arg)
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{
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jack_default_audio_sample_t *in, *out;
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jack_transport_state_t ts = jack_transport_query(client, NULL);
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int i;
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if (ts == JackTransportRolling) {
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if (client_state == Init)
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client_state = Run;
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in = jack_port_get_buffer (input_port, nframes);
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/* First hack */
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if (nframes != 0) {
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memcpy (rcv_buf, in, nframes);
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jack_read();
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}
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#if 0
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out = jack_port_get_buffer (output_port, nframes);
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memcpy (out, in,
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sizeof (jack_default_audio_sample_t) * nframes);
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#endif
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} else if (ts == JackTransportStopped) {
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if (client_state == Run)
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client_state = Exit;
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}
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return 0;
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}
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/**
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* JACK calls this shutdown_callback if the server ever shuts down or
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* decides to disconnect the client.
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*/
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void
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jack_shutdown (void *arg)
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{
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return;
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}
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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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{
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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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double dnfs;
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const char **ports;
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const char *client_name;
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jack_options_t options = JackNullOption;
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jack_status_t status;
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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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/* open a client connection to the JACK server */
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client = jack_client_open ("wsjt", options, &status, NULL);
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if (client == NULL) {
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fprintf (stderr, "jack_client_open() failed, "
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"status = 0x%2.0x\n", status);
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if (status & JackServerFailed) {
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fprintf (stderr, "Unable to connect to JACK server\n");
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}
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return(-1);
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}
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if (status & JackServerStarted) {
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fprintf (stderr, "JACK server started\n");
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}
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if (status & JackNameNotUnique) {
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client_name = jack_get_client_name(client);
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fprintf (stderr, "unique name `%s' assigned\n", client_name);
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}
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/* tell the JACK server to call `process()' whenever
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* there is work to be done.
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*/
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jack_set_process_callback (client, process, 0);
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/* tell the JACK server to call `jack_shutdown()' if
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* it ever shuts down, either entirely, or if it
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* just decides to stop calling us.
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*/
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jack_on_shutdown (client, jack_shutdown, 0);
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/* display the current sample rate.
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*/
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printf ("engine sample rate: %" PRIu32 "\n",
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jack_get_sample_rate (client));
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/* create two ports */
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input_port = jack_port_register (client, "input",
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JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsInput, 0);
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output_port = jack_port_register (client, "output",
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JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsOutput, 0);
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if ((input_port == NULL) || (output_port == NULL)) {
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fprintf(stderr, "no more JACK ports available\n");
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/* ZZZ close jack above */
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return(-1);
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}
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/* Tell the JACK server that we are ready to roll. Our
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* process() callback will start running now.
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*/
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if (jack_activate (client)) {
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fprintf (stderr, "cannot activate client");
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/* ZZZ close jack above */
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return(-1);
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}
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/* Connect the ports. You can't do this before the client is
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* activated, because we can't make connections to clients
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* that aren't running. Note the confusing (but necessary)
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* orientation of the driver backend ports: playback ports are
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* "input" to the backend, and capture ports are "output" from
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* it.
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*/
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ports = jack_get_ports (client, NULL, NULL,
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JackPortIsPhysical|JackPortIsOutput);
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if (ports == NULL) {
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fprintf(stderr, "no physical capture ports\n");
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/* ZZZ close jack above */
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return(-1);
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}
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if (jack_connect (client, ports[0], jack_port_name (input_port))) {
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fprintf (stderr, "cannot connect input ports\n");
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}
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free (ports);
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ports = jack_get_ports (client, NULL, NULL,
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JackPortIsPhysical|JackPortIsInput);
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if (ports == NULL) {
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fprintf(stderr, "no physical playback ports\n");
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/* ZZZ close jack above */
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return(-1);
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}
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if (jack_connect (client, jack_port_name (output_port), ports[0])) {
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fprintf (stderr, "cannot connect output ports\n");
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}
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free (ports);
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printf("Audio jack streams running normally.\n");
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printf("******************************************************************\n");
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printf("start_threads: creating thread for decode1\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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/* keep running until the transport stops */
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#if 0
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jack_client_close (client);
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#endif
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return(0);
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}
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/*
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* jack_read
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*
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* inputs - none
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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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jack_read(void)
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{
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struct timeval tv;
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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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/* 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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void
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jack_write(void)
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{
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int i;
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static int n=0;
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static int ic=0;
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struct timeval tv;
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static int n2=0;
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static int16_t *wptr;
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static int TxOKz=0;
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static int nsec=0;
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static double stime;
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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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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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