//
// Retrieve a recors from disk and check it's CRC
//
void dvb_config_retrieve_from_disk( sys_config *cfg )
{
FILE *fp;
SysConfigRecord rd;
int success = -1;
dvb_config_create();
if((fp=fopen(dvb_config_get_path("datvexpress.cfg"),"r")) > 0)
{
size_t size = fread( &rd, 1, sizeof(SysConfigRecord), fp );
if( size == sizeof(SysConfigRecord))
{
// Check the CRC to make sure it is valid
unsigned long crc = dvb_crc32_calc((unsigned char*)&rd.cfg, sizeof(sys_config));
if( crc == rd.crc.crc )
{
memcpy( cfg, &rd.cfg, sizeof(sys_config));
success = 0;
}
}
//cfg->dvbs2_fmt.constellation = M_QPSK;
//cfg->dvb_mode = MODE_DVBS;
fclose(fp);
}
if( success != 0 )
{
loggerf("Using default Settings");
dvb_default_configuration( cfg );
dvb_config_save_to_disk( cfg );
}
}
void dvb_config_save_to_disk(sys_config *cfg)
{
FILE *fp;
SysConfigRecord record;
dvb_config_create();
if((fp=fopen(dvb_config_get_path("datvexpress.cfg"),"w"))>0)
{
// Create a CRC of the data and sve it along with the data
record.crc.crc = dvb_crc32_calc((unsigned char*)cfg, sizeof(sys_config));
// Copy the cfg into the disk record structure
memcpy( &record.cfg, cfg, sizeof(sys_config));
// Save
fwrite(&record,sizeof(SysConfigRecord), 1, fp );
fclose(fp);
}
else
{
loggerf("Cannot save configuration file (check owner)");
}
}
/*
void fft_2k_test( fftw_complex *out )
{
memset(fftw_in, 0, sizeof(fftw_complex)*M2KS);
int m = (M2KS/2)+32;//1704;
fftw_in[m].re = 0.7;
fftw_one( m_fftw_2k_plan, fftw_in, out );
return;
}
*/
void init_dvb_t_fft( void )
{
//
// Plans
//
#ifdef USE_AVFFT
m_avfft_2k_context = av_fft_init (11, 1);
m_avfft_4k_context = av_fft_init (12, 1);
m_avfft_8k_context = av_fft_init (13, 1);
m_avfft_16k_context = av_fft_init (14, 1);
m_fft_in = (fft_complex*)av_malloc(sizeof(fft_complex)*M16KS);
m_fft_out = (fft_complex*)av_malloc(sizeof(fft_complex)*M16KS);
#else
FILE *fp;
if((fp=fopen(dvb_config_get_path("fftw_wisdom"),"r"))!=NULL)
{
fftw_import_wisdom_from_file(fp);
m_fftw_2k_plan = fftw_create_plan(M2KS, FFTW_BACKWARD, FFTW_USE_WISDOM);
m_fftw_4k_plan = fftw_create_plan(M4KS, FFTW_BACKWARD, FFTW_USE_WISDOM);
m_fftw_8k_plan = fftw_create_plan(M8KS, FFTW_BACKWARD, FFTW_USE_WISDOM);
m_fftw_16k_plan = fftw_create_plan(M16KS, FFTW_BACKWARD, FFTW_USE_WISDOM);
fftw_import_wisdom_from_file(fp);
}
else
{
if((fp=fopen(dvb_config_get_path("fftw_wisdom"),"w"))!=NULL)
{
m_fftw_2k_plan = fftw_create_plan(M2KS, FFTW_BACKWARD, FFTW_MEASURE | FFTW_USE_WISDOM);
m_fftw_4k_plan = fftw_create_plan(M4KS, FFTW_BACKWARD, FFTW_MEASURE | FFTW_USE_WISDOM);
m_fftw_8k_plan = fftw_create_plan(M8KS, FFTW_BACKWARD, FFTW_MEASURE | FFTW_USE_WISDOM);
m_fftw_16k_plan = fftw_create_plan(M16KS, FFTW_BACKWARD, FFTW_MEASURE | FFTW_USE_WISDOM);
if(fp!=NULL) fftw_export_wisdom_to_file(fp);
}
}
m_fft_in = (fft_complex*)fftw_malloc(sizeof(fft_complex)*M16KS);
m_fft_out = (fft_complex*)fftw_malloc(sizeof(fft_complex)*M16KS);
#endif
if( m_format.tm == TM_2K)
{
m_N = M2KS;
switch( m_format.chan )
{
case CH_8M:
case CH_7M:
case CH_6M:
m_IR = 1;
break;
case CH_4M:
case CH_3M:
case CH_2M:
case CH_1M:
m_IR = 2;
break;
case CH_500K:
m_IR = 4;
break;
}
}
if( m_format.tm == TM_8K)
{
m_N = M8KS;
switch( m_format.chan )
{
case CH_8M:
case CH_7M:
case CH_6M:
m_IR = 1;
break;
case CH_4M:
case CH_3M:
case CH_2M:
case CH_1M:
m_IR = 2;
break;
}
}
create_correction_table( m_N, m_IR );
}
