PierMesh
/
direwolf
mirror of https://github.com/wb2osz/direwolf.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

build under OSS

This commit is contained in:
Andrew 2017-01-15 20:37:10 -08:00
parent 99e7095f17
commit 7463853757
2 changed files with 99 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
audio_ptt.c
View File

@ -35,6 +35,13 @@
#include <limits.h>
#include <math.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#if USE_ALSA
#include <alsa/asoundlib.h>
@ -147,15 +154,97 @@ static void * ptt_thread (void *arg)
}
free (pnData);
} else {
dw_printf("Failed to configure ALSA device. PTT tone will not be enabled.\n");
}
snd_pcm_close (handle);
} else {
dw_printf("Failed to open ALSA device. PTT tone will not be enabled.\n");
}
#else
int oss_audio_device_fd;
oss_audio_device_fd = open (save_audio_config_p->adev[a].adevice_out, O_WRONLY);
if (oss_audio_device_fd != -1) {
if (oss_audio_device_fd >= 0) {
int devcaps;
int num_channels;
int samples_per_sec;
int bits_per_sample;
int err;
num_channels = save_audio_config_p->adev[a].num_channels;
err = ioctl (oss_audio_device_fd, SNDCTL_DSP_CHANNELS, &num_channels);
if (err != -1) {
samples_per_sec = save_audio_config_p->adev[a].samples_per_sec;
err = ioctl (oss_audio_device_fd, SNDCTL_DSP_SPEED, &samples_per_sec);
}
if (err != -1) {
bits_per_sample = save_audio_config_p->adev[a].bits_per_sample;
err = ioctl (oss_audio_device_fd, SNDCTL_DSP_SETFMT, &bits_per_sample);
}
if (err != -1) {
err = ioctl (oss_audio_device_fd, SNDCTL_DSP_GETCAPS, &devcaps);
}
if (err != -1) {
short* pnData;
short sample;
int nBufferLength;
int nSamples;
int written;
int i;
int j;
nSamples = samples_per_sec / 5;
nBufferLength = num_channels * nSamples * sizeof(short);
pnData = (short*)malloc (nBufferLength);
for (i = 0; i < nSamples; i++) {
sample = (short)( (double)SHRT_MAX * sin( ( (double)i * freq / (double)samples_per_sec ) * 2.0 * M_PI ) );
for (j = 0; j < num_channels; j++) {
if (channel == ADEVFIRSTCHAN( a ) + j) {
pnData[i*num_channels + j] = sample;
} else {
pnData[i*num_channels + j] = 0;
}
}
}
while (1) {
pthread_mutex_lock (&save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_mutex);
ptt_audio_state_t ptt_state = save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_state;
pthread_mutex_unlock (&save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_mutex);
if (ptt_state == PTT_AUDIO_STATE_STOP) {
ioctl (oss_audio_device_fd, SNDCTL_DSP_RESET, NULL);
pthread_mutex_lock (&save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_mutex);
pthread_cond_wait (&save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_condition, &save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_mutex);
ptt_state = save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_state;
pthread_mutex_unlock (&save_audio_config_p->achan[ch].octrl[OCTYPE_PTT].ptt_mutex);
}
if (ptt_state == PTT_AUDIO_STATE_START) {
written = write (oss_audio_device_fd, pnData, nBufferLength);
}
else if (ptt_state == PTT_AUDIO_STATE_CLOSE) {
ioctl (oss_audio_device_fd, SNDCTL_DSP_RESET, NULL);
break;
}
}
free (pnData);
} else {
dw_printf("Failed to configure OSS device. PTT tone will not be enabled.\n");
}
close (oss_audio_device_fd);
} else {
dw_printf("Failed to open OSS device. PTT tone will not be enabled.\n");
}
#endif
}