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pcaudio.cpp
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pcaudio.cpp
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/*
Copyright (C) 2018 BrerDawg
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
//pcaudio.cpp
//v1.01 25-may-2015 //
#include "pcaudio.h"
extern bool my_verbose;
extern int audio_hardware_bits_max_integer;
extern int audio_hardware_bits_min_integer;
extern int lev_clip_flag;
extern int lev_clip_ch;
extern int lev_clip_polarity;
extern double lev_clip_val;
//linux code
#ifndef compile_for_windows
int audio_card_fd = -1; //sound device file descriptor
unsigned char *ac_bufout = 0; //data to line/spkr o/p (d/a)
unsigned char *ac_bufin = 0; //data from mic/line i/p (a/d)
unsigned int ac_uc_bufsize = 0;
gcthrd *ac_thrd1 = 0;
gcthrd *ac_thrd2 = 0;
void audio_card_thrd_start();
void audio_card_thrd_stop();
//bool ac_need_more_data; //set if we need more audio data
unsigned int max_fragments; //holds max number of fragments (from empty linux sound driver) before write() calls will block
#endif
//windows code
#ifdef compile_for_windows
HWAVEOUT hwo = 0;
HWAVEIN hwi = 0;
bool bIssueMoreBuffers;
bool bStillBuffersToPlay;
bool bStillBuffersToRec;
bool issue_more_buf_rec;
DWORD dwBufferSize;
WAVEHDR wh1; //one for each buffer
WAVEHDR wh2;
WAVEHDR wh3;
WAVEHDR wh4;
WAVEHDR wh33;
//char *RecordingWfex = 0; //a WAVEFORMATEX dynamically allocated buffer pointer
//DWORD dwBiggestWfex;//largest possible size of WAVEFORMATEX,depends on compression chosen
bool bStarted=0;
bool started_wave_in = 0;
//function prototypes
void CALLBACK MCICallbackWaveOut( HWAVEOUT hw, UINT uMsg,DWORD dwInstance,DWORD dwParam1,DWORD dwParam2 );
void CALLBACK MCICallbackWaveIn( HWAVEIN hw, UINT uMsg,DWORD dwInstance,DWORD dwParam1,DWORD dwParam2 );
unsigned int ac_awaiting_in_buffer = 0; //shows which buffer needs to be loaded in audio_card_prepare_in()
unsigned int ac_awaiting_out_buffer = 0; //shows which buffer needs to be loaded in audio_card_prepare_out()
#endif
int ac_whtnz_iFilter = 0;
bool ac_whtnz_bFilterOn =0;
double ac_two_pi = M_PI * 2.0;
unsigned int ac_srate;
unsigned int ac_bits;
unsigned int ac_double_bufsize;
unsigned int ac_data_count_to_write = 0; //size of data to be written
double ac_sample_time;
double ac_tone_freq1; //use for test signal generation
double ac_tone_theta1;
double ac_tsg_gain1;
double ac_tone_inc1;
double ac_VU0 = def_VU0; //an audio level of 1.0 gives this value to sound card d/a
double ac_gain_out_ch1; // 1.0 is unity
double ac_gain_out_ch2; // 1.0 is unity
unsigned int ac_opened_in_channels = 0;
unsigned int ac_opened_out_channels = 0;
char *cBuff1 = 0;//[ cnBufsize ];
char *cBuff2 = 0;//[ cnBufsize ];
char *cBuff3 = 0;//[ cnBufsize ];
char *cBuff4 = 0;//[ cnBufsize ];
char *cBuff33 = 0;//[ cnBufsize ];
flts *audiocard_outbuf0 = 0;
flts *audiocard_outbuf1 = 0;
flts *audiocard_inbuf0 = 0;
flts *audiocard_inbuf1 = 0;
//these vars are to capture missing outbuf loads, if set, it means a buf failed to be loaded before it was needed to be sent to audio card d/a
bool ac_missed_buf1 = 0; //if set this indicates at least one ch1 buf failed to be loaded before it was needed to be sent to audio card d/a
unsigned int ac_missed_buf_cnt1 = 0; //this holds a count of how many missed buf events have occurred for ch1
bool ac_loaded_buf1 = 0; //this is set by audio_card_prepare_out(..) for ch1, and reset by
bool ac_missed_buf2 = 0; //if set this indicates at least one ch2 buf failed to be loaded before it was needed to be sent to audio card d/a
unsigned int ac_missed_buf_cnt2 = 0; //this holds a count of how many missed buf events have occurred for ch1
bool ac_loaded_buf2 = 0; //this is set by audio_card_prepare_out(..) for ch1, and reset by
//for test signal injection - see audiocard_inject_test_sig(..)
int ac_test_sig_type = 0;//en_ac_test_sig_tone;// //en_ac_test_sig_whitenoise;
unsigned int ac_test_sig_freq = 400;
unsigned int ac_test_sig_level;
//int (*cb_user_process)( jack_nframes_t nframes, void *arg ); //windows callback to user for sample buffer loading
int (*cb_user_process_out)( unsigned int chn, unsigned int frames, void *arg ); //windows callback to user for sample buffer loading
int (*cb_user_process_in)( unsigned int chn, unsigned int frames, void *arg ); //windows callback to user for sample buffer loading
void *user_args;
//sets the o/p gain, 1.0 is unity
bool audio_card_set_out_gain( double ch1, double ch2 )
{
ac_gain_out_ch1 = ch1;
ac_gain_out_ch2 = ch2;
}
//sample_buf_size should be set to number of samples to process between callbacks e.g: like 4096
//bool audio_card_init( unsigned int srate, unsigned int channels, unsigned int bits, unsigned int sample_buf_size, int (*cb_user_process_in)( jack_nframes_t nframes, void *arg ), void* user_args_in )
bool audio_card_open_out( unsigned int srate, unsigned int channels, unsigned int bits, unsigned int sample_buf_size, int (*cb_user_process_out_i)( unsigned int chn, unsigned int frames, void *arg ), void* user_args_in )
{
ac_gain_out_ch1 = 1.0;
ac_gain_out_ch2 = 1.0;
if( cb_user_process_out_i == 0 )
{
if ( my_verbose ) printf( "audio_card_open_out() - no callback specified\n" );
return 0;
}
cb_user_process_out = cb_user_process_out_i; //set callback function
user_args = user_args_in;
ac_two_pi = M_PI * 2.0;
ac_srate = srate;
ac_opened_out_channels = channels;
ac_bits = bits;
ac_sample_time = 1.0 / (double)ac_srate;
ac_VU0 = def_VU0;
//linux code
#ifndef compile_for_windows
int arg; // argument for ioctl calls
if( audio_card_fd != -1 )
{
if ( my_verbose ) printf( "audio_card_open_out() - already opened\n" );
return 0;
}
string s1 = "/dev/dsp";
audio_card_fd = open( s1.c_str() , O_RDWR );
if( audio_card_fd < 0 )
{
if ( my_verbose ) printf("audio_card_open_out() - failed to open device: %s\n", s1.c_str() );
return 0;
}
arg = ac_bits;
int status;
status = ioctl( audio_card_fd, SOUND_PCM_WRITE_BITS, &arg );
if ( status == -1 )
{
if ( my_verbose ) printf( "audio_card_open_out() - SOUND_PCM_WRITE_BITS ioctl failed: %d\n", arg );
return 0;
}
if ( arg != ac_bits )
{
if ( my_verbose ) printf("audio_card_open_out() - Unable to set sample size: %d\n", arg );
return 0;
}
arg = ac_opened_out_channels;
status = ioctl( audio_card_fd, SOUND_PCM_WRITE_CHANNELS, &arg );
if ( status == -1 )
{
if ( my_verbose ) printf( "audio_card_open_out() - SOUND_PCM_WRITE_CHANNELS ioctl failed: %d\n", arg );
return 0;
}
if ( arg != ac_opened_out_channels )
{
if ( my_verbose ) printf("audio_card_open_out() - Unable to set channel count: %d\n", arg );
return 0;
}
arg = srate;
status = ioctl( audio_card_fd, SOUND_PCM_WRITE_RATE, &arg );
if ( status == -1 )
{
if ( my_verbose ) printf( "audio_card_open_out() - SOUND_PCM_WRITE_WRITE ioctl failed: %d\n", arg );
return 0;
}
if ( arg != srate )
{
if ( my_verbose ) printf("audio_card_open_out() - Unable to set samplerate: %d\n", arg );
return 0;
}
unsigned int fragmentsize;
audio_card_data_size_for_non_blocking_write( max_fragments, fragmentsize );
if ( my_verbose ) printf("audio_card_open_out() - fragment size: %d, max fragments: %d\n", fragmentsize, max_fragments );
ac_uc_bufsize = sample_buf_size * ac_opened_out_channels * ( ac_bits / 8 ); // e.g: 4096 x 2 channels * ( 16 bits / 8 )
ac_double_bufsize = sample_buf_size;
//sound card output buffers (to line/spk o/p)
ac_bufout = new unsigned char[ ac_uc_bufsize ];
for ( int i = 0; i < ac_uc_bufsize; i++ ) //clear char buf
{
ac_bufout[ i ] = 0;
}
audiocard_outbuf0 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_outbuf0[ i ] = 0;
}
if( ac_opened_out_channels >= 2 )
{
audiocard_outbuf1 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_outbuf1[ i ] = 0;
}
}
goto ok;
#endif
//windows code
#ifdef compile_for_windows
if( hwo )
{
if ( my_verbose ) printf( "audio_card_open_out() - already opened\n" );
return 0;
}
if( ac_opened_out_channels > 2 ) ac_opened_out_channels = 2;
MMRESULT mmres;
WAVEFORMATEX wfex;
//srate = 44100;
//channels = 2;
//bits = 16;
wfex.wFormatTag = WAVE_FORMAT_PCM;
wfex.nChannels = ac_opened_out_channels;
wfex.nSamplesPerSec = ac_srate;
wfex.wBitsPerSample = ac_bits;
wfex.nBlockAlign = wfex.nChannels * wfex.wBitsPerSample / 8; //e.g: 2 * 16 / 8 = 4
wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign; //e.g: 48000 * 4 = 192000
wfex.cbSize = 0;
dwBufferSize = sample_buf_size * ac_opened_out_channels * ( ac_bits / 8 ); // e.g: 4096 x 2 channels * ( 16 bits / 8 )
ac_double_bufsize = sample_buf_size;
cBuff1 = new char[ dwBufferSize ]; //for audio o/p to line/spkr
cBuff2 = new char[ dwBufferSize ];
cBuff3 = new char[ dwBufferSize ];
cBuff33 = new char[ dwBufferSize ];
for ( int i = 0; i < dwBufferSize; i++ ) //clear char buffers
{
cBuff1[ i ] = 0;
cBuff2[ i ] = 0;
cBuff3[ i ] = 0;
cBuff33[ i ] = 0;
}
audiocard_outbuf0 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_outbuf0[ i ] = 0;
}
if( ac_opened_out_channels >= 2 )
{
audiocard_outbuf1 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_outbuf1[ i ] = 0;
}
}
//printf( "audio_card_open() - cBuff1 size %d\n", dwBufferSize );
//printf( "audio_card_open() - audiocard_outbuf0 size %d\n", ac_double_bufsize );
//Sleep( 5000 );
//open wave out device
if( !hwo )
{
mmres = waveOutOpen( &hwo, WAVE_MAPPER, &wfex,(DWORD)MCICallbackWaveOut, 0, CALLBACK_FUNCTION | WAVE_ALLOWSYNC );
if( mmres != MMSYSERR_NOERROR )
{
printf( "audio_card_open_out() - waveOutOpen() error - mmres = %d\n", mmres );
goto fail;
}
}
printf("hwo: %x\n", hwo );
audio_card_make_test_signal_if_req(cBuff1, dwBufferSize); //will just fill buffer with zero if no test signal selected
wh1.lpData=(LPSTR) cBuff1;
wh1.dwBufferLength=dwBufferSize;
wh1.dwFlags=0;
wh1.dwLoops=0;
wh1.dwUser=0;
//advise windows of buffer1 details
mmres=waveOutPrepareHeader(hwo,&wh1,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
waveOutClose(hwo);
goto fail;
}
audio_card_make_test_signal_if_req(cBuff2, dwBufferSize); //will just fill buffer with zero if no test signal selected
wh2.lpData=(LPSTR) cBuff2;
wh2.dwBufferLength=dwBufferSize;
wh2.dwFlags=0;
wh2.dwLoops=0;
wh2.dwUser=0;
//advise windows of buffer2 details
mmres=waveOutPrepareHeader(hwo,&wh2,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
waveOutClose(hwo);
goto fail;
}
audio_card_make_test_signal_if_req(cBuff33, dwBufferSize); //will just fill buffer with zero if no test signal selected
wh33.lpData=(LPSTR) cBuff33;
wh33.dwBufferLength=dwBufferSize;
wh33.dwFlags=0;
wh33.dwLoops=0;
wh33.dwUser=0;
//advise windows of buffer3 details
mmres=waveOutPrepareHeader(hwo,&wh33,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
waveOutClose(hwo);
goto fail;
}
/*
MakeWhiteNoise(cBuff3, dwBufferSize); //will just fill buffer with zero if no test signal selected
wh3.lpData=(LPSTR) cBuff3;
wh3.dwBufferLength=dwBufferSize;
wh3.dwFlags=0;
wh3.dwLoops=0;
wh3.dwUser=0;
//advise windows of buffer3 details
mmres=waveOutPrepareHeader(hwo,&wh3,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
waveOutClose(hwo);
goto fail;
}
*/
bIssueMoreBuffers=1;
bStillBuffersToPlay=1;
bStarted = 1;
//add buffer 1 (wav playing buffer)
mmres=waveOutWrite(hwo,&wh1,sizeof(WAVEHDR));
if(mmres!=MMSYSERR_NOERROR)
{
printf( "audio_card_open_out() - waveOutWrite( wh1 ) error - mmres = %d\n", mmres );
goto fail;
}
//add buffer 2 (next wav playing buffer)
mmres=waveOutWrite(hwo,&wh2,sizeof(WAVEHDR));
if(mmres!=MMSYSERR_NOERROR)
{
printf( "audio_card_open_out() - waveOutWrite( wh2 ) error - mmres = %d\n", mmres );
goto fail;
}
//add buffer 3 (next wav playing buffer)
mmres=waveOutWrite(hwo,&wh33,sizeof(WAVEHDR));
if(mmres!=MMSYSERR_NOERROR)
{
printf( "audio_card_open_out() - waveOutWrite( wh3 ) error - mmres = %d\n", mmres );
goto fail;
}
goto ok;
fail:
if ( my_verbose ) printf( "audio_card_open_out() - failed\n" );
bIssueMoreBuffers = 0;
if( hwo ) waveOutClose( hwo );
hwo = 0;
return 0;
#endif
ok:
ac_missed_buf1 = 0;
ac_missed_buf2 = 0;
ac_missed_buf_cnt1 = 0;
ac_missed_buf_cnt2 = 0;
ac_loaded_buf1 = 0;
ac_loaded_buf2 = 0;
if ( my_verbose )
{
printf( "audio_card_open_out() - opened ok\n" );
printf( "audio_card_open_out() - srate: %d, channels: %d, bits: %d\n", ac_srate, ac_opened_out_channels, ac_bits );
printf( "audio_card_open_out() - framesize: %d\n", sample_buf_size );
}
//linux code
#ifndef compile_for_windows
audio_card_thrd_start();
#endif
return 1;
}
//sample_buf_size should be set to number of samples to process between callbacks e.g: like 4096
//bool audio_card_init( unsigned int srate, unsigned int channels, unsigned int bits, unsigned int sample_buf_size, int (*cb_user_process_in)( jack_nframes_t nframes, void *arg ), void* user_args_in )
bool audio_card_open_in( unsigned int srate, unsigned int channels, unsigned int bits, unsigned int sample_buf_size, int (*cb_user_process_in_i)( unsigned int chn, unsigned int frames, void *arg ), void* user_args_in )
{
if( cb_user_process_in_i == 0 )
{
if ( my_verbose ) printf( "audio_card_open_in() - no callback specified\n" );
return 0;
}
cb_user_process_in = cb_user_process_in_i; //set callback function
user_args = user_args_in;
ac_two_pi = M_PI * 2.0;
ac_srate = srate;
ac_opened_in_channels = channels;
ac_bits = bits;
ac_sample_time = 1.0 / (double)ac_srate;
ac_VU0 = def_VU0;
//linux code
#ifndef compile_for_windows
int arg; // argument for ioctl calls
if( audio_card_fd == -1 )
{
if ( my_verbose ) printf( "audio_card_open_in() - audio card not opened\n" );
return 0;
}
arg = srate;
int status = ioctl( audio_card_fd, SOUND_PCM_WRITE_RATE, &arg );
if ( status == -1 )
{
if ( my_verbose ) printf( "audio_card_open_in() - SOUND_PCM_WRITE_WRITE ioctl failed: %d\n", arg );
return 0;
}
if ( arg != srate )
{
if ( my_verbose ) printf("audio_card_open_in() - Unable to set samplerate: %d\n", arg );
return 0;
}
ac_uc_bufsize = sample_buf_size * ac_opened_out_channels * ( ac_bits / 8 ); // e.g: 4096 x 2 channels * ( 16 bits / 8 )
ac_double_bufsize = sample_buf_size;
//sound card input buffers (from mic/line i/p)
ac_bufin = new unsigned char[ ac_uc_bufsize ];
for ( int i = 0; i < ac_uc_bufsize; i++ ) //clear char buf
{
ac_bufin[ i ] = 0;
}
audiocard_inbuf0 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_inbuf0[ i ] = 0;
}
if( ac_opened_out_channels >= 2 )
{
audiocard_inbuf1 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_inbuf1[ i ] = 0;
}
}
goto ok;
#endif
//windows code
#ifdef compile_for_windows
if( hwi )
{
if ( my_verbose ) printf( "audio_card_open_in() - already opened\n" );
return 0;
}
if( ac_opened_out_channels > 2 ) ac_opened_out_channels = 2;
MMRESULT mmres;
//srate = 44100;
//channels = 2;
//bits = 16;
WAVEFORMATEX wfex_in;
wfex_in.wFormatTag = WAVE_FORMAT_PCM;
wfex_in.nChannels = ac_opened_in_channels;
wfex_in.nSamplesPerSec = ac_srate;
wfex_in.wBitsPerSample = ac_bits;
wfex_in.nBlockAlign = wfex_in.nChannels * wfex_in.wBitsPerSample / 8; //e.g: 2 * 16 / 8 = 4
wfex_in.nAvgBytesPerSec = wfex_in.nSamplesPerSec * wfex_in.nBlockAlign; //e.g: 48000 * 4 = 192000
wfex_in.cbSize = 0;
dwBufferSize = sample_buf_size * ac_opened_in_channels * ( ac_bits / 8 ); // e.g: 4096 x 2 channels * ( 16 bits / 8 )
ac_double_bufsize = sample_buf_size;
cBuff3 = new char[ dwBufferSize ]; //for audio i/p from mic/line i/p
cBuff4 = new char[ dwBufferSize ];
for ( int i = 0; i < dwBufferSize; i++ ) //clear char buffers
{
cBuff3[ i ] = 0;
cBuff4[ i ] = 0;
}
audiocard_inbuf0 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_inbuf0[ i ] = 0;
}
if( ac_opened_in_channels >= 2 )
{
audiocard_inbuf1 = new flts[ ac_double_bufsize ];
for ( int i = 0; i < ac_double_bufsize; i++ ) //clear flts buf
{
audiocard_inbuf1[ i ] = 0;
}
}
//printf( "audio_card_open() - cBuff1 size %d\n", dwBufferSize );
//printf( "audio_card_open() - audiocard_outbuf0 size %d\n", ac_double_bufsize );
//Sleep( 5000 );
//open wave input device
//find out how big the WAVEFORMATEX can be
//acmMetrics( 0, ACM_METRIC_MAX_SIZE_FORMAT, &dwBiggestWfex );
//allocate space for it
//RecordingWfex = new char[ dwBiggestWfex ];
//WAVEFORMATEX *wfex_in = (WAVEFORMATEX *) RecordingWfex;
issue_more_buf_rec = 1;
mmres = waveInOpen( &hwi, WAVE_MAPPER, &wfex_in, (DWORD)MCICallbackWaveIn, 0, CALLBACK_FUNCTION );
if( mmres != MMSYSERR_NOERROR )
{
printf( "audio_card_open() - waveInOpen() error - mmres = %d\n", mmres );
goto fail;
}
wh3.lpData=(LPSTR) cBuff3;
wh3.dwBufferLength=dwBufferSize;
wh3.dwFlags=0;
wh3.dwLoops=0;
wh3.dwBytesRecorded=0;
wh4.lpData=(LPSTR) cBuff4;
wh4.dwBufferLength=dwBufferSize;
wh4.dwFlags=0;
wh4.dwLoops=0;
wh4.dwBytesRecorded=0;
//prepare buffer1
mmres=waveInPrepareHeader(hwi,&wh3,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
// if(hwi) waveInClose(hwi);
// hwi = 0;
printf( "audio_card_open_in() - waveInPrepareHeader( wh3 ) error - mmres = %d\n", mmres );
goto fail;
goto fail;
}
//prepare buffer2
mmres=waveInPrepareHeader( hwi, &wh4,sizeof(WAVEHDR) );
if(mmres!=MMSYSERR_NOERROR)
{
waveInUnprepareHeader( hwi, &wh3, sizeof(WAVEHDR) );
// waveInClose(hwi);
// hwi = 0;
printf( "audio_card_open_in() - waveInPrepareHeader( wh4 ) error - mmres = %d\n", mmres );
goto fail;
}
//add where buffer is
mmres = waveInAddBuffer( hwi, &wh3, sizeof(WAVEHDR) );
if( mmres != MMSYSERR_NOERROR )
{
printf( "audio_card_open_in() - waveInAddBuffer( wh3 ) error - mmres = %d\n", mmres );
goto fail;
// waveInUnprepareHeader(hwi,&wh,sizeof(WAVEHDR) );
// waveInUnprepareHeader(hwi,&wh2,sizeof(WAVEHDR) );
// waveInUnprepareHeader(hwi,&wh3,sizeof(WAVEHDR) );
}
//add where buffer is
mmres = waveInAddBuffer( hwi, &wh4, sizeof(WAVEHDR) );
if( mmres != MMSYSERR_NOERROR )
{
printf( "audio_card_open_in() - waveInAddBuffer( wh4 ) error - mmres = %d\n", mmres );
goto fail;
// waveInUnprepareHeader(hwi,&wh,sizeof(WAVEHDR) );
// waveInUnprepareHeader(hwi,&wh2,sizeof(WAVEHDR) );
// waveInUnprepareHeader(hwi,&wh3,sizeof(WAVEHDR) );
}
started_wave_in = 1;
//start recording
mmres = waveInStart( hwi );
if( mmres != MMSYSERR_NOERROR )
{
printf( "audio_card_open_in() - error, mmres = %d\n", mmres );
goto fail;
}
goto ok;
fail:
if ( my_verbose ) printf( "audio_card_open_in() - failed\n" );
//if( RecordingWfex ) delete RecordingWfex;
issue_more_buf_rec = 0;
if( hwi ) waveInClose( hwi );
hwi = 0;
return 0;
#endif
ok:
if ( my_verbose )
{
printf( "audio_card_open_in() - opened ok\n" );
printf( "audio_card_open_in() - srate: %d, channels: %d, bits: %d\n", ac_srate, ac_opened_out_channels, ac_bits );
printf( "audio_card_open_in() - framesize: %d\n", sample_buf_size );
}
//linux code
//#ifndef compile_for_windows
//audio_card_thrd_start();
//#endif
return 1;
}
bool audio_card_close( )
{
mystr m1;
//linux code
#ifndef compile_for_windows
audio_card_thrd_stop();
if ( audio_card_fd != 0 )
{
close( audio_card_fd );
audio_card_fd = -1;
}
else{
if ( my_verbose ) printf( "audio_card_close() - not opened\n" );
}
if ( ac_bufout != 0 )
{
delete ac_bufout;
ac_bufout = 0;
}
#endif
//windows code
#ifdef compile_for_windows
bIssueMoreBuffers = 0;
issue_more_buf_rec = 0;
//Sleep( 1000 ); //this is to ensure all playing buffers a completed
m1.time_start( m1.ns_tim_start );
while ( 1 ) //wait till audio has stopped playing
{
if( ( !bStarted ) && ( !started_wave_in ) ) break;
double d = m1.time_passed( m1.ns_tim_start );
if( d > 2 )
{
if ( my_verbose ) printf( "audio_card_close() - timed out\n" );
break;
}
}
if( hwi ) waveInStop( hwi );
if( hwi ) waveInReset( hwi );
if( hwo == 0 )
{
if ( my_verbose ) printf( "audio_card_close() - hwo = 0, failed\n" );
}
else{
waveOutClose( hwo );
}
if( hwi == 0 )
{
if ( my_verbose ) printf( "audio_card_close() - hwi = 0, failed\n" );
}
else{