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Summary: Implements audio playback (TX) for ALSA.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@46 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
J C Dutton
parent
821f4c3b14
commit
445a0f7985
146
start_threads.c
146
start_threads.c
@ -5,10 +5,14 @@
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#include <inttypes.h>
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#include <time.h>
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#if 0
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#if 1
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#define ALSA_LOG
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#define ALSA_LOG_BUFFERS
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#endif
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#if 0
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#define ALSA_PLAYBACK_LOG
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#define ALSA_CAPTURE_LOG
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#endif
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#define BUFFER_TIME 2000*1000
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@ -31,7 +35,13 @@ typedef struct alsa_driver_s {
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double *Tsec;
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double *tbuf;
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int *ibuf;
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int *ndsec;
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int *ndsec;
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int *tx_ok;
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int tx_starting;
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int tx_offset;
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int *tr_period;
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int *nwave;
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int *transmitting;
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snd_pcm_uframes_t buffer_size;
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snd_pcm_uframes_t period_size;
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@ -40,7 +50,8 @@ typedef struct alsa_driver_s {
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alsa_driver_t alsa_driver_playback;
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alsa_driver_t alsa_driver_capture;
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void *alsa_buffers[2];
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void *alsa_capture_buffers[2];
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void *alsa_playback_buffers[2];
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static snd_output_t *jcd_out;
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@ -173,9 +184,13 @@ static int ao_alsa_open(alsa_driver_t *this_gen, int32_t *input_rate, snd_pcm_st
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printf("Buffer time size %lu\n",buffer_time_to_size);
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#endif
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this->buffer_size = buffer_time_to_size;
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if (buffer_size_max < this->buffer_size) this->buffer_size = buffer_size_max;
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if (buffer_size_min > this->buffer_size) this->buffer_size = buffer_size_min;
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this->period_size=this->buffer_size/8;
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if (buffer_size_max < this->buffer_size)
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this->buffer_size = buffer_size_max;
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if (buffer_size_min > this->buffer_size)
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this->buffer_size = buffer_size_min;
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this->period_size = this->buffer_size/8;
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if (this->period_size > 2048)
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this->period_size = 2048;
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this->buffer_size = this->period_size*8;
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#ifdef ALSA_LOG_BUFFERS
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printf("To choose buffer_size = %ld\n",this->buffer_size);
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@ -264,7 +279,7 @@ static int ao_alsa_open(alsa_driver_t *this_gen, int32_t *input_rate, snd_pcm_st
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}
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if (direction == SND_PCM_STREAM_PLAYBACK) {
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/* start the transfer when the buffer contains at least period_size samples */
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err = snd_pcm_sw_params_set_start_threshold(this->audio_fd, swparams, 0);
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err = snd_pcm_sw_params_set_start_threshold(this->audio_fd, swparams, this->buffer_size);
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} else {
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err = snd_pcm_sw_params_set_start_threshold(this->audio_fd, swparams, -1);
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}
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@ -275,7 +290,7 @@ static int ao_alsa_open(alsa_driver_t *this_gen, int32_t *input_rate, snd_pcm_st
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if (direction == SND_PCM_STREAM_PLAYBACK) {
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/* never stop the transfer, even on xruns */
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err = snd_pcm_sw_params_set_stop_threshold(this->audio_fd, swparams, 0);
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err = snd_pcm_sw_params_set_stop_threshold(this->audio_fd, swparams, this->buffer_size);
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} else {
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err = snd_pcm_sw_params_set_stop_threshold(this->audio_fd, swparams, this->buffer_size);
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}
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@ -303,11 +318,49 @@ close:
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return 0;
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}
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int16_t zero_buffer[65536];
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int playback_callback(alsa_driver_t *alsa_driver_playback) {
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alsa_driver_t *this = alsa_driver_playback;
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printf("playback callback\n");
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//snd_pcm_writen(this->audio_fd, alsa_buffers, this->period_size);
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//fivehztx_(); //Call fortran routine
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int result;
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struct timeval tv;
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double stime;
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int nsec;
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int n;
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// printf("playback callback\n");
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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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*(this->Tsec) = stime;
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if(!(this->tx_starting) && (*(this->tx_ok)) ) {
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int ic;
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nsec = (int)stime;
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n = nsec / *(this->tr_period);
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ic = (int)(stime - *(this->tr_period) * n) * this->output_sample_rate;
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ic = ic % *(this->nwave);
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this->tx_offset = ic;
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}
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this->tx_starting = *(this->tx_ok);
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*(this->transmitting) = *(this->tx_ok);
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if(*(this->tx_ok)) {
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alsa_playback_buffers[0] = this->app_buffer_y1 + this->tx_offset;
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alsa_playback_buffers[1] = this->app_buffer_y1 + this->tx_offset;
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} else {
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alsa_playback_buffers[0] = zero_buffer;
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alsa_playback_buffers[1] = zero_buffer;
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}
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result = snd_pcm_writen(this->audio_fd, alsa_playback_buffers, this->period_size);
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this->tx_offset += this->period_size;
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if (result != this->period_size) {
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printf("playback writei failed. Expected %d samples, sent only %d\n", this->period_size, result);
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#ifdef ALSA_PLAYBACK_LOG
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snd_pcm_status_t *pcm_stat;
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snd_pcm_status_alloca(&pcm_stat);
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snd_pcm_status(this->audio_fd, pcm_stat);
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snd_pcm_status_dump(pcm_stat, jcd_out);
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#endif
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}
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fivehztx_(); //Call fortran routine
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}
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int capture_callback(alsa_driver_t *alsa_driver_capture) {
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@ -316,31 +369,32 @@ int capture_callback(alsa_driver_t *alsa_driver_capture) {
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struct timeval tv;
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double stime;
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int ib;
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#ifdef ALSA_LOG
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#ifdef ALSA_CAPTURE_LOG
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printf("capture callback %d samples\n", this->period_size);
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#endif
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#ifdef ALSA_LOG
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#ifdef ALSA_CAPTURE_LOG
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snd_pcm_status_t *pcm_stat;
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snd_pcm_status_alloca(&pcm_stat);
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snd_pcm_status(this->audio_fd, pcm_stat);
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snd_pcm_status_dump(pcm_stat, jcd_out);
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#endif
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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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*(this->ndsec)*0.1;
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*(this->Tsec)=stime;
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stime = (double) tv.tv_sec + ((double)tv.tv_usec / 1000000.0) +
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*(this->ndsec) * 0.1;
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*(this->Tsec) = stime;
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ib=*(this->ibuf);
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this->tbuf[ib++]=stime;
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if(ib>=1024) ib=0;
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*(this->ibuf)=ib;
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this->tbuf[ib++] = stime;
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if(ib>=1024)
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ib = 0;
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*(this->ibuf) = ib;
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alsa_buffers[0]=this->app_buffer_y1 + *(this->app_buffer_offset);
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alsa_buffers[1]=this->app_buffer_y2 + *(this->app_buffer_offset);
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result = snd_pcm_readn(this->audio_fd, alsa_buffers, this->period_size);
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alsa_capture_buffers[0]=this->app_buffer_y1 + *(this->app_buffer_offset);
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alsa_capture_buffers[1]=this->app_buffer_y2 + *(this->app_buffer_offset);
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result = snd_pcm_readn(this->audio_fd, alsa_capture_buffers, this->period_size);
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*(this->app_buffer_offset) += this->period_size;
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if ( *(this->app_buffer_offset) >= this->app_buffer_length )
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*(this->app_buffer_offset)=0; /* FIXME: implement proper wrapping */
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#ifdef ALSA_LOG
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#ifdef ALSA_CAPTURE_LOG
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printf("result=%d\n",result);
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snd_pcm_status(this->audio_fd, pcm_stat);
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snd_pcm_status_dump(pcm_stat, jcd_out);
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@ -348,6 +402,16 @@ int capture_callback(alsa_driver_t *alsa_driver_capture) {
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fivehz_(); //Call fortran routine
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}
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int playback_xrun(alsa_driver_t *alsa_driver_playback) {
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alsa_driver_t *this = alsa_driver_playback;
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snd_pcm_status_t *pcm_stat;
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snd_pcm_status_alloca(&pcm_stat);
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printf("playback xrun\n");
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snd_pcm_status(this->audio_fd, pcm_stat);
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snd_pcm_status_dump(pcm_stat, jcd_out);
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snd_pcm_prepare(this->audio_fd);
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}
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int capture_xrun(alsa_driver_t *alsa_driver_capture) {
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alsa_driver_t *this = alsa_driver_capture;
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snd_pcm_status_t *pcm_stat;
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@ -373,12 +437,10 @@ void ao_alsa_loop(void *iarg) {
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(playback_nfds + capture_nfds));
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nfds=0;
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#if 0
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snd_pcm_poll_descriptors (alsa_driver_playback.audio_fd,
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&pfd[0],
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playback_nfds);
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nfds += playback_nfds;
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#endif
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snd_pcm_poll_descriptors (alsa_driver_capture.audio_fd,
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&pfd[nfds],
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capture_nfds);
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@ -389,7 +451,7 @@ void ao_alsa_loop(void *iarg) {
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printf("poll failed\n");
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return;
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}
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//snd_pcm_poll_descriptors_revents(alsa_driver_playback.audio_fd, &pfd[0], playback_nfds, &playback_revents);
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snd_pcm_poll_descriptors_revents(alsa_driver_playback.audio_fd, &pfd[0], playback_nfds, &playback_revents);
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snd_pcm_poll_descriptors_revents(alsa_driver_capture.audio_fd, &pfd[capture_index], capture_nfds, &capture_revents);
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//if ((playback_revents & POLLERR) || ((capture_revents) & POLLERR)) {
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if (((capture_revents) & POLLERR)) {
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@ -397,11 +459,14 @@ void ao_alsa_loop(void *iarg) {
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capture_xrun(&alsa_driver_capture);
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return;
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}
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#if 0
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if (((playback_revents) & POLLERR)) {
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printf("pollerr\n");
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playback_xrun(&alsa_driver_capture);
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return;
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}
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if (playback_revents & POLLOUT) {
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playback_callback(&alsa_driver_playback);
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}
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#endif
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if (capture_revents & POLLIN) {
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capture_callback(&alsa_driver_capture);
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}
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@ -421,16 +486,23 @@ int start_threads_(int *ndevin, int *ndevout, short y1[], short y2[],
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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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int iarg1 = 1,iarg2 = 2;
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//int32_t rate=11025;
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int32_t rate=*nfsample;
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alsa_driver_capture.app_buffer_y1=y1;
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alsa_driver_capture.app_buffer_y2=y2;
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alsa_driver_capture.app_buffer_offset=iwrite;
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alsa_driver_capture.app_buffer_length=*nbuflen;
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alsa_driver_capture.Tsec=Tsec;
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alsa_driver_capture.tbuf=tbuf;
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alsa_driver_capture.ibuf=ibuf;
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alsa_driver_capture.app_buffer_y1 = y1;
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alsa_driver_capture.app_buffer_y2 = y2;
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alsa_driver_capture.app_buffer_offset = iwrite;
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alsa_driver_capture.app_buffer_length = *nbuflen;
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alsa_driver_capture.Tsec = Tsec;
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alsa_driver_capture.tbuf = tbuf;
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alsa_driver_capture.ibuf = ibuf;
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alsa_driver_capture.ndsec = ndsec;
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alsa_driver_playback.Tsec = Tsec;
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alsa_driver_playback.app_buffer_y1 = iwave;
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alsa_driver_playback.tx_ok = TxOK;
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alsa_driver_playback.tr_period = TRPeriod;
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alsa_driver_playback.nwave = nwave;
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alsa_driver_playback.transmitting = Transmitting;
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alsa_driver_capture.ndsec=ndsec;
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printf("start threads called\n");
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@ -445,6 +517,8 @@ int start_threads_(int *ndevin, int *ndevout, short y1[], short y2[],
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iret2 = pthread_create(&thread2, NULL, ao_alsa_loop, NULL);
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snd_pcm_prepare(alsa_driver_capture.audio_fd);
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snd_pcm_start(alsa_driver_capture.audio_fd);
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snd_pcm_prepare(alsa_driver_playback.audio_fd);
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//snd_pcm_start(alsa_driver_playback.audio_fd);
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/* snd_pcm_start */
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//iret2 = pthread_create(&thread2,NULL,a2d_,&iarg2);
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3
wsjt.py
3
wsjt.py
@ -1300,7 +1300,8 @@ def update():
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nmsg=int(Audio.gcom2.nmsg)
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t=g.ftnstr(Audio.gcom2.sending)
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if t[:3]=="CQ ": nsked.set(0)
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t="Transmitting: "+t[:nmsg]
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# t="Transmitting: "+t[:nmsg]
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t="Transmitting: "
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# t="Txing: "+t[:nmsg]
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bgcolor='yellow'
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if Audio.gcom2.sendingsh==1: bgcolor='#66FFFF'
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