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#include "sdr.h"
sdr_t* sdr_init()
{
sdr_t *sdr=NULL;
sdr = malloc( sizeof(sdr_t) );
if (sdr == NULL)
return NULL;
memset( sdr, 0, sizeof(sdr_t) );
return sdr;
}
//index of device in oter list
//return inner device list
int sdr_open_device( sdr_t *sdr, int dev_index )
{
int ret;
dongle_t *dng=NULL;
rtlsdr_dev_t *rtl=NULL;
//for now only one device will be supported
if (sdr == NULL)
return -1;
if (sdr->dongle != NULL)
return -1;
dng = malloc(sizeof(dongle_t));
memset(dng, 0, sizeof(dongle_t));
//set default values for dongle_t
DEF_DONGLE_VALUES(dng);
ret = hw_open( &rtl, (uint32_t)dev_index );
if ( ret < 0 )
{
printf("Cannot open device %02d\n", dev_index );
goto exit_dng_err;
}
ret = hw_reset_buffer( rtl );
if ( ret < 0 )
{
printf("Couldnt reset buffer\n");
goto exit_dng_err;
}
ret = hw_set_sample_rate( rtl, dng->rate );
if ( ret < 0 )
{
printf("Couldnt set sample rate to %d\n", dng->rate);
goto exit_dng_err;
}
ret = hw_set_center_freq( rtl, dng->freq );
if ( ret < 0 )
{
printf("Couldnt set frequency %d\n", dng->freq );
goto exit_dng_err;
}
ret = hw_set_tuner_gain_mode( rtl, dng->gain );
if ( ret < 0 )
{
printf("Cannot set autogain mode\n");
goto exit_dng_err;
}
ret = hw_set_agc_mode( rtl, 1 );
if ( ret < 0 )
{
printf("Cannot set agc mode\n");
goto exit_dng_err;
}
dng->dev_index = dev_index;
dng->dev = rtl;
sdr->dongle = dng;
return 0;
exit_dng_err:
free( dng );
return -1;
}
//associate audio device that going to be used
//int sdr_open_audio( sdr_t *sdr, int dev_index );//?should be just device from list or device name?
//get device structure from sdr manager by pluged device num
//dont try to free it muahaha
dongle_t* sdr_get_device_id( sdr_t *sdr, int dev_index)
{
dongle_t *dng=NULL;
if ( sdr == NULL )
return NULL;
if (sdr->dongle == NULL)
return NULL;
if (sdr->dongle->dev_index != dev_index)
{
printf("Cannot find device with such device ID\n");
return NULL;
}
return sdr->dongle;
}
//get index in list of devices of structure from outer device index
//? do we need?
//int sdr_get_dongle_idx( sdr_t *sdr, int idx );
//close device by internal list index
int sdr_close_device( sdr_t *sdr, int dev_index )
{
if ( sdr == NULL )
return -1;
if ( sdr->dongle == NULL )
{
return -1;
}
if ( sdr->dongle->dev == NULL )
return -1;
if ( sdr->dongle->dev_index != dev_index )
return -1;
hw_close( sdr->dongle->dev );
free( sdr->dongle->dev );
sdr->dongle->dev = NULL;
free( sdr->dongle );
sdr->dongle = NULL;
return 0;
}
//close sdr
//if there is opened audios then close
//if there is opened devices then close
int sdr_close( sdr_t *sdr )
{
if ( sdr != NULL )
{
if ( sdr->dongle != NULL )
{
if ( sdr->dongle->dev != NULL )
{
hw_close( sdr->dongle->dev );
free( sdr->dongle->dev );
sdr->dongle->dev = NULL;
}
free( sdr->dongle );
sdr->dongle = NULL;
}
free(sdr);
sdr = NULL;
return 0;
}
return -1;
}
//stop any action that associated with dongle
//not yet implemented
int dongle_stop( dongle_t *dongle )
{
return -1;
}
//int dongle_open( sdr_t *);
//set dongle frequency
int dongle_set_freq( dongle_t *dongle, uint32_t freq)
{
int ret = 0;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_set_center_freq( dongle->dev, freq );
if ( ret < 0 )
{
printf("Cannot set device frequency to %ud\n", freq);
return -1;
}
return 0;
}
//set gain
int dongle_set_gain( dongle_t *dongle, int gain)
{
int ret;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_set_tuner_gain_mode( dongle->dev, gain );
if ( ret < 0 )
{
printf("Cannot set tunner gain level %d\n", gain );
return -1;
}
return 0;
}
//set dongle sample rate
int dongle_set_sample_rate( dongle_t *dongle, uint32_t rate )
{
int ret;
if ( dongle == NULL )
{
return -1;
}
if ( dongle->dev == NULL )
return -1;
ret = hw_set_sample_rate( dongle->dev, rate );
if ( ret < 0 )
{
printf("Cannot set sample rate to %uMsps\n", rate);
return -1;
}
return 0;
}
int dongle_set_agc( dongle_t *dongle, int mode)
{
int ret;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
//need mode check things
ret = hw_set_agc_mode( dongle->dev, mode );
if ( ret < 0 )
{
printf("Cannot set agc gain mode\n");
return -1;
}
return 0;
}
uint32_t dongle_get_freq( dongle_t *dongle )
{
return dongle->freq;
}
int dongle_get_gain( dongle_t *dongle )
{
return dongle->gain;
}
uint32_t dongle_get_sample_rate( dongle_t *dongle )
{
return dongle->rate;
}
int dongle_read_samples( dongle_t *dongle, uint8_t *buf, int len )
{
int ret, read_num;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_read_sync( dongle->dev, buf, len, &read_num );
if ( ret < 0 )
{
printf("Couldnt read samples\n");
return -1;
}
return 0;
}
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