本文整理汇总了C++中IDirectSoundBuffer::Restore方法的典型用法代码示例。如果您正苦于以下问题：C++ IDirectSoundBuffer::Restore方法的具体用法？C++ IDirectSoundBuffer::Restore怎么用？C++ IDirectSoundBuffer::Restore使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IDirectSoundBuffer的用法示例。
在下文中一共展示了IDirectSoundBuffer::Restore方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
void SoundLibrary3dDirectSound::SetChannelVolume( int _channel, float _volume )
{
DirectSoundChannel *channel;
if (_channel == m_musicChannelId)
channel = m_musicChannel;
else channel = &m_channels[_channel];
if (!NearlyEquals(_volume, channel->m_volume) || m_forceVolumeUpdate )
{
AppDebugAssert(_volume >= 0.0f && _volume <= 10.0f);
channel->m_volume = _volume;
// long calculatedVolume = expf(10.0f - _volume);
// calculatedVolume += m_masterVolume;
// calculatedVolume *= -1.0f;
float calculatedVolume = -(5.0f - _volume * 0.5f);
calculatedVolume *= 1000.0f;
calculatedVolume += m_masterVolume;
if( calculatedVolume < -10000.0f ) calculatedVolume = -10000.0f;
if( calculatedVolume > 0.0f ) calculatedVolume = 0.0f;
IDirectSoundBuffer *buffer = channel->m_bufferInterface;
int errCode = buffer->SetVolume( calculatedVolume );
if (errCode == DSERR_BUFFERLOST)
buffer->Restore();
else
SOUNDASSERT( errCode, "Direct sound couldn't set buffer volume" );
}
}示例2: Stream
void DirectSoundStreamer::Stream( void const *pSamples )
{
// Verify buffer availability
DWORD play, write;
if( FAILED( m_pDirectSoundBuffer->GetCurrentPosition( &play, &write ) ) )
return;
if( write < play )
write += DWORD( m_physical );
std::size_t begin( m_begin );
if( begin < play )
begin += m_physical;
if( begin < write )
begin = std::size_t( write );
std::size_t end( begin + m_stream );
if( play + m_virtual < end )
return;
begin %= m_physical;
// Copy samples to buffer
void *ps[ 2 ];
DWORD sizes[ 2 ];
HRESULT hResult( m_pDirectSoundBuffer->Lock( DWORD( begin ), DWORD( m_stream ), &ps[ 0 ], &sizes[ 0 ], &ps[ 1 ], &sizes[ 1 ], 0 ) );
if( FAILED( hResult ) )
{
if( hResult != DSERR_BUFFERLOST )
return;
m_pDirectSoundBuffer->Restore();
if( FAILED( m_pDirectSoundBuffer->Lock( DWORD( begin ), DWORD( m_stream ), &ps[ 0 ], &sizes[ 0 ], &ps[ 1 ], &sizes[ 1 ], 0 ) ) )
return;
}
using std::memcpy;
memcpy( ps[ 0 ], pSamples, std::size_t( sizes[ 0 ] ) );
if( ps[ 1 ] )
memcpy( ps[ 1 ], static_cast< char const * >( pSamples ) + sizes[ 0 ], std::size_t( sizes[ 1 ] ) );
m_pDirectSoundBuffer->Unlock( ps[ 0 ], sizes[ 0 ], ps[ 1 ], sizes[ 1 ] );
// Select next buffer
m_begin = end % m_physical;
}