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fix in Linux audio interface

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This commit is contained in:
Volker Fischer 2009-02-16 20:11:35 +00:00
parent 347befce8d
commit 1c77e542aa
1 changed files with 14 additions and 10 deletions
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24
linux/sound.cpp
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@ -105,7 +105,7 @@ bool CSound::Read ( CVector<short>& psData )
{
ret = snd_pcm_prepare ( rhandle );
if (ret < 0)
if ( ret < 0 )
{
qDebug ( "Can't recover from suspend, prepare failed: %s", snd_strerror ( ret ) );
}
@ -156,7 +156,7 @@ void CSound::InitPlayback ( const bool bNewBlocking )
// playback device (either "hw:0,0" or "plughw:0,0")
if ( err = snd_pcm_open ( &phandle, "hw:0,0",
SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK ) != 0 )
SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK ) != 0 )
{
qDebug ( "open error: %s", snd_strerror ( err ) );
}
@ -212,7 +212,7 @@ bool CSound::Write ( CVector<short>& psData )
}
else if ( ret == -EAGAIN )
{
if ( ( ret = snd_pcm_wait ( phandle, 1 ) ) < 0 )
if ( ( ret = snd_pcm_wait ( phandle, 1000 ) ) < 0 )
{
qDebug ( "poll failed (%s)", snd_strerror ( ret ) );
break;
@ -221,12 +221,12 @@ bool CSound::Write ( CVector<short>& psData )
}
else if ( ret == -ESTRPIPE )
{
qDebug("wstrpipe");
qDebug ( "wstrpipe" );
// wait until the suspend flag is released
while ( (ret = snd_pcm_resume ( phandle ) ) == -EAGAIN )
while ( ( ret = snd_pcm_resume ( phandle ) ) == -EAGAIN )
{
sleep(1);
sleep ( 1 );
}
if ( ret < 0 )
@ -247,8 +247,11 @@ bool CSound::Write ( CVector<short>& psData )
break; // skip one period
}
size -= ret;
start += ret;
if ( ret > 0 )
{
size -= ret;
start += ret;
}
}
return false;
@ -310,7 +313,7 @@ bool CSound::SetHWParams ( snd_pcm_t* handle, const int iBufferSizeIn,
// restrict a configuration space to contain only one channels count:
// set the count of channels (usually stereo, 2 channels)
if ( err = snd_pcm_hw_params_set_channels(handle, hwparams, NUM_IN_OUT_CHANNELS ) < 0 )
if ( err = snd_pcm_hw_params_set_channels ( handle, hwparams, NUM_IN_OUT_CHANNELS ) < 0 )
{
qDebug ( "Channels count (%i) not available s: %s", NUM_IN_OUT_CHANNELS, snd_strerror ( err ) );
return true;
@ -356,7 +359,8 @@ bool CSound::SetHWParams ( snd_pcm_t* handle, const int iBufferSizeIn,
// check period and buffer size
snd_pcm_uframes_t buffer_size;
if ( err = snd_pcm_hw_params_get_buffer_size(hwparams, &buffer_size ) < 0 ) {
if ( err = snd_pcm_hw_params_get_buffer_size(hwparams, &buffer_size ) < 0 )
{
qDebug ( "Unable to get buffer size for playback: %s\n", snd_strerror ( err ) );
}
qDebug ( "buffer size: %d (desired: %d)", (int) buffer_size, iBufferSizeIn * iNumPeriodBlocks );