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added some more ASIO sample formats (not yet all implemented!), support for sound card conversion buffer to support sound card frame sizes which are different from the predefined ones

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This commit is contained in:
Volker Fischer 2010-02-03 19:27:48 +00:00
parent f06f38dc75
commit 75b1994257
7 changed files with 694 additions and 264 deletions
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289
src/buffer.cpp
View file

@ -29,15 +29,173 @@
/* Implementation *************************************************************/ /* Implementation *************************************************************/
// Buffer base class -----------------------------------------------------------
// explicit instantiation of the template used in this software (required to
// have the implementation in the cpp file and not in the header file)
template class CBufferBase<uint8_t>; // for network buffer
template class CBufferBase<int16_t>; // for sound card conversion buffer
template<class TData>
void CBufferBase<TData>::Init ( const int iNewMemSize )
{
// store total memory size value
iMemSize = iNewMemSize;
// allocate memory for actual data buffer
vecMemory.Init ( iNewMemSize );
// init buffer pointers and buffer state (empty buffer)
iGetPos = 0;
iPutPos = 0;
eBufState = CBufferBase<TData>::BS_EMPTY;
}
template<class TData>
bool CBufferBase<TData>::Put ( const CVector<TData>& vecData,
const int iInSize )
{
// copy new data in internal buffer
int iCurPos = 0;
if ( iPutPos + iInSize > iMemSize )
{
// remaining space size for second block
const int iRemSpace = iPutPos + iInSize - iMemSize;
// data must be written in two steps because of wrap around
while ( iPutPos < iMemSize )
{
vecMemory[iPutPos++] = vecData[iCurPos++];
}
for ( iPutPos = 0; iPutPos < iRemSpace; iPutPos++ )
{
vecMemory[iPutPos] = vecData[iCurPos++];
}
}
else
{
// data can be written in one step
const int iEnd = iPutPos + iInSize;
while ( iPutPos < iEnd )
{
vecMemory[iPutPos++] = vecData[iCurPos++];
}
}
// set buffer state flag
if ( iPutPos == iGetPos )
{
eBufState = CBufferBase<TData>::BS_FULL;
}
else
{
eBufState = CBufferBase<TData>::BS_OK;
}
return true; // no error check in base class, alyways return ok
}
template<class TData>
bool CBufferBase<TData>::Get ( CVector<TData>& vecData )
{
// get size of data to be get from the buffer
const int iInSize = vecData.Size();
// copy data from internal buffer in output buffer
int iCurPos = 0;
if ( iGetPos + iInSize > iMemSize )
{
// remaining data size for second block
const int iRemData = iGetPos + iInSize - iMemSize;
// data must be read in two steps because of wrap around
while ( iGetPos < iMemSize )
{
vecData[iCurPos++] = vecMemory[iGetPos++];
}
for ( iGetPos = 0; iGetPos < iRemData; iGetPos++ )
{
vecData[iCurPos++] = vecMemory[iGetPos];
}
}
else
{
// data can be read in one step
const int iEnd = iGetPos + iInSize;
while ( iGetPos < iEnd )
{
vecData[iCurPos++] = vecMemory[iGetPos++];
}
}
// set buffer state flag
if ( iPutPos == iGetPos )
{
eBufState = CBufferBase<TData>::BS_EMPTY;
}
else
{
eBufState = CBufferBase<TData>::BS_OK;
}
return true; // no error check in base class, alyways return ok
}
template<class TData>
int CBufferBase<TData>::GetAvailSpace() const
{
// calculate available space in buffer
int iAvSpace = iGetPos - iPutPos;
// check for special case and wrap around
if ( iAvSpace < 0 )
{
iAvSpace += iMemSize; // wrap around
}
else
{
if ( ( iAvSpace == 0 ) && ( eBufState == BS_EMPTY ) )
{
iAvSpace = iMemSize;
}
}
return iAvSpace;
}
template<class TData>
int CBufferBase<TData>::GetAvailData() const
{
// calculate available data in buffer
int iAvData = iPutPos - iGetPos;
// check for special case and wrap around
if ( iAvData < 0 )
{
iAvData += iMemSize; // wrap around
}
else
{
if ( ( iAvData == 0 ) && ( eBufState == BS_FULL ) )
{
iAvData = iMemSize;
}
}
return iAvData;
}
// Network buffer (jitter buffer) ----------------------------------------------
void CNetBuf::Init ( const int iNewBlockSize, void CNetBuf::Init ( const int iNewBlockSize,
const int iNewNumBlocks ) const int iNewNumBlocks )
{ {
// total size -> size of one block times number of blocks // store block size value
iBlockSize = iNewBlockSize; iBlockSize = iNewBlockSize;
iMemSize = iNewBlockSize * iNewNumBlocks;
// allocate and clear memory for actual data buffer // total size -> size of one block times number of blocks
vecbyMemory.Init ( iMemSize ); CBufferBase<uint8_t>::Init ( iNewBlockSize * iNewNumBlocks );
// use the "get" flag to make sure the buffer is cleared // use the "get" flag to make sure the buffer is cleared
Clear ( CT_GET ); Clear ( CT_GET );
@ -68,43 +226,8 @@ bool CNetBuf::Put ( const CVector<uint8_t>& vecbyData,
} }
} }
// copy new data in internal buffer // copy new data in internal buffer (implemented in base class)
int iCurPos = 0; CBufferBase<uint8_t>::Put ( vecbyData, iInSize );
if ( iPutPos + iInSize > iMemSize )
{
// remaining space size for second block
const int iRemSpace = iPutPos + iInSize - iMemSize;
// data must be written in two steps because of wrap around
while ( iPutPos < iMemSize )
{
vecbyMemory[iPutPos++] = vecbyData[iCurPos++];
}
for ( iPutPos = 0; iPutPos < iRemSpace; iPutPos++ )
{
vecbyMemory[iPutPos] = vecbyData[iCurPos++];
}
}
else
{
// data can be written in one step
const int iEnd = iPutPos + iInSize;
while ( iPutPos < iEnd )
{
vecbyMemory[iPutPos++] = vecbyData[iCurPos++];
}
}
// set buffer state flag
if ( iPutPos == iGetPos )
{
eBufState = CNetBuf::BS_FULL;
}
else
{
eBufState = CNetBuf::BS_OK;
}
// update statistic // update statistic
ErrorRateStatistic.Update ( !bPutOK ); ErrorRateStatistic.Update ( !bPutOK );
@ -152,43 +275,9 @@ bool CNetBuf::Get ( CVector<uint8_t>& vecbyData )
} }
} }
// copy data from internal buffer in output buffer // copy data from internal buffer in output buffer (implemented in base
int iCurPos = 0; // class)
if ( iGetPos + iInSize > iMemSize ) CBufferBase<uint8_t>::Get ( vecbyData );
{
// remaining data size for second block
const int iRemData = iGetPos + iInSize - iMemSize;
// data must be read in two steps because of wrap around
while ( iGetPos < iMemSize )
{
vecbyData[iCurPos++] = vecbyMemory[iGetPos++];
}
for ( iGetPos = 0; iGetPos < iRemData; iGetPos++ )
{
vecbyData[iCurPos++] = vecbyMemory[iGetPos];
}
}
else
{
// data can be read in one step
const int iEnd = iGetPos + iInSize;
while ( iGetPos < iEnd )
{
vecbyData[iCurPos++] = vecbyMemory[iGetPos++];
}
}
// set buffer state flag
if ( iPutPos == iGetPos )
{
eBufState = CNetBuf::BS_EMPTY;
}
else
{
eBufState = CNetBuf::BS_OK;
}
// update statistic // update statistic
ErrorRateStatistic.Update ( !bGetOK ); ErrorRateStatistic.Update ( !bGetOK );
@ -196,48 +285,6 @@ bool CNetBuf::Get ( CVector<uint8_t>& vecbyData )
return bGetOK; return bGetOK;
} }
int CNetBuf::GetAvailSpace() const
{
// calculate available space in buffer
int iAvSpace = iGetPos - iPutPos;
// check for special case and wrap around
if ( iAvSpace < 0 )
{
iAvSpace += iMemSize; // wrap around
}
else
{
if ( ( iAvSpace == 0 ) && ( eBufState == BS_EMPTY ) )
{
iAvSpace = iMemSize;
}
}
return iAvSpace;
}
int CNetBuf::GetAvailData() const
{
// calculate available data in buffer
int iAvData = iPutPos - iGetPos;
// check for special case and wrap around
if ( iAvData < 0 )
{
iAvData += iMemSize; // wrap around
}
else
{
if ( ( iAvData == 0 ) && ( eBufState == BS_FULL ) )
{
iAvData = iMemSize;
}
}
return iAvData;
}
void CNetBuf::Clear ( const EClearType eClearType ) void CNetBuf::Clear ( const EClearType eClearType )
{ {
// Define the number of blocks bound for the "random offset" (1) algorithm. // Define the number of blocks bound for the "random offset" (1) algorithm.
@ -301,7 +348,7 @@ void CNetBuf::Clear ( const EClearType eClearType )
if ( eClearType == CT_GET ) if ( eClearType == CT_GET )
{ {
// clear buffer since we had a buffer underrun // clear buffer since we had a buffer underrun
vecbyMemory.Reset ( 0 ); vecMemory.Reset ( 0 );
// reset buffer pointers so that they are at maximum distance after // reset buffer pointers so that they are at maximum distance after
// the get operation (assign new fill level value to the get pointer) // the get operation (assign new fill level value to the get pointer)

41
src/buffer.h
View file

@ -36,13 +36,32 @@
/* Classes ********************************************************************/ /* Classes ********************************************************************/
// Network buffer (jitter buffer) ---------------------------------------------- // Buffer base class -----------------------------------------------------------
class CNetBuf template<class TData> class CBufferBase
{ {
public: public:
CNetBuf() {} virtual void Init ( const int iNewMemSize );
virtual ~CNetBuf() {}
virtual bool Put ( const CVector<TData>& vecData, const int iInSize );
virtual bool Get ( CVector<TData>& vecData );
virtual int GetAvailSpace() const;
virtual int GetAvailData() const;
protected:
enum EBufState { BS_OK, BS_FULL, BS_EMPTY };
CVector<TData> vecMemory;
int iMemSize;
int iGetPos, iPutPos;
EBufState eBufState;
};
// Network buffer (jitter buffer) ----------------------------------------------
class CNetBuf : public CBufferBase<uint8_t>
{
public:
void Init ( const int iNewBlockSize, const int iNewNumBlocks ); void Init ( const int iNewBlockSize, const int iNewNumBlocks );
int GetSize() { return iMemSize / iBlockSize; } int GetSize() { return iMemSize / iBlockSize; }
@ -52,18 +71,12 @@ public:
double GetErrorRate() { return ErrorRateStatistic.GetAverage(); } double GetErrorRate() { return ErrorRateStatistic.GetAverage(); }
protected: protected:
enum EBufState { BS_OK, BS_FULL, BS_EMPTY };
enum EClearType { CT_PUT, CT_GET }; enum EClearType { CT_PUT, CT_GET };
void Clear ( const EClearType eClearType );
int GetAvailSpace() const;
int GetAvailData() const;
CVector<uint8_t> vecbyMemory; void Clear ( const EClearType eClearType );
int iMemSize;
int iBlockSize; int iBlockSize;
int iNumInvalidElements; int iNumInvalidElements;
int iGetPos, iPutPos;
EBufState eBufState;
// statistic // statistic
CErrorRate ErrorRateStatistic; CErrorRate ErrorRateStatistic;
@ -71,11 +84,13 @@ protected:
// Conversion buffer (very simple buffer) -------------------------------------- // Conversion buffer (very simple buffer) --------------------------------------
// For this very simple buffer no wrap around mechanism is implemented. We
// assume here, that the applied buffers are an integer fraction of the total
// buffer size.
template<class TData> class CConvBuf template<class TData> class CConvBuf
{ {
public: public:
CConvBuf() { Init ( 0 ); } CConvBuf() { Init ( 0 ); }
virtual ~CConvBuf() {}
void Init ( const int iNewMemSize ) void Init ( const int iNewMemSize )
{ {

201
src/client.cpp
View file

@ -8,16 +8,16 @@
* *
* This program is free software; you can redistribute it and/or modify it under * 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 * 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 * Foundation; either version 2 of the License, or (at your option) any later
* version. * version.
* *
* This program is distributed in the hope that it will be useful, but WITHOUT * 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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. * details.
* *
* You should have received a copy of the GNU General Public License along with * 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., * this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* *
\******************************************************************************/ \******************************************************************************/
@ -43,7 +43,9 @@ CClient::CClient ( const quint16 iPortNumber ) :
bFraSiFactDefSupported ( false ), bFraSiFactDefSupported ( false ),
bFraSiFactSafeSupported ( false ), bFraSiFactSafeSupported ( false ),
iCeltNumCodedBytes ( CELT_NUM_BYTES_NORMAL_QUALITY ), iCeltNumCodedBytes ( CELT_NUM_BYTES_NORMAL_QUALITY ),
bCeltDoHighQuality ( false ) bCeltDoHighQuality ( false ),
bSndCrdConversionBufferRequired ( false ),
iSndCardMonoBlockSizeSamConvBuff ( 0 )
{ {
// init audio endocder/decoder (mono) // init audio endocder/decoder (mono)
CeltMode = celt_mode_create ( CeltMode = celt_mode_create (
@ -189,22 +191,12 @@ void CClient::SetSndCrdPrefFrameSizeFactor ( const int iNewFactor )
iSndCrdPrefFrameSizeFactor = iNewFactor; iSndCrdPrefFrameSizeFactor = iNewFactor;
// init with new block size index parameter // init with new block size index parameter
const bool bInitWasOk = Init(); Init();
if ( bWasRunning ) if ( bWasRunning )
{ {
if ( bInitWasOk ) // restart client
{ Sound.Start();
// init was ok, restart client
Sound.Start();
}
else
{
// init was not successful, do not restart client and
// inform main window of the stopped client
Stop();
emit Stopped();
}
} }
} }
} }
@ -245,22 +237,12 @@ QString CClient::SetSndCrdDev ( const int iNewDev )
// init again because the sound card actual buffer size might // init again because the sound card actual buffer size might
// be changed on new device // be changed on new device
const bool bInitWasOk = Init(); Init();
if ( bWasRunning ) if ( bWasRunning )
{ {
if ( bInitWasOk ) // restart client
{ Sound.Start();
// init was ok, restart client
Sound.Start();
}
else
{
// init was not successful, do not restart client and
// inform main window of the stopped client
Stop();
emit Stopped();
}
} }
return strReturn; return strReturn;
@ -279,52 +261,19 @@ void CClient::OnSndCrdReinitRequest()
// reinit the driver (we use the currently selected driver) and // reinit the driver (we use the currently selected driver) and
// init client object, too // init client object, too
Sound.SetDev ( Sound.GetDev() ); Sound.SetDev ( Sound.GetDev() );
const bool bInitWasOk = Init(); Init();
if ( bWasRunning ) if ( bWasRunning )
{ {
if ( bInitWasOk ) // restart client
{ Sound.Start();
// init was ok, restart client
Sound.Start();
}
else
{
// init was not successful, do not restart client and
// inform main window of the stopped client
Stop();
emit Stopped();
}
} }
} }
void CClient::Start() void CClient::Start()
{ {
// init object // init object
if ( !Init() ) Init() ;
{
const QString strError = "The current sound card frame size of <b>" +
QString().setNum ( iMonoBlockSizeSam ) + " samples</b> is not supported "
"by this software. Please open your "
#ifdef _WIN32
"ASIO "
#else
"JACK "
#endif
"configuration panel and use one of the following frame sizes: <b>" +
QString().setNum ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_PREFERRED ) + ", " +
QString().setNum ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_DEFAULT ) + ", or " +
QString().setNum ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_SAFE ) +
" samples</b>."
#ifdef _WIN32
"<br><br>To open the ASIO configuration panel, you can open the Settings "
"Dialog in the llcon software (using the menu) and click on the \"ASIO "
"Setup\" button."
#endif
;
throw CGenErr ( strError );
}
// enable channel // enable channel
Channel.SetEnable ( true ); Channel.SetEnable ( true );
@ -367,16 +316,7 @@ void CClient::Stop()
PostWinMessage ( MS_RESET_ALL, 0 ); PostWinMessage ( MS_RESET_ALL, 0 );
} }
void CClient::AudioCallback ( CVector<int16_t>& psData, void* arg ) void CClient::Init()
{
// get the pointer to the object
CClient* pMyClientObj = reinterpret_cast<CClient*> ( arg );
// process audio data
pMyClientObj->ProcessAudioData ( psData );
}
bool CClient::Init()
{ {
// check if possible frame size factors are supported // check if possible frame size factors are supported
const int iFraSizePreffered = const int iFraSizePreffered =
@ -402,16 +342,60 @@ bool CClient::Init()
iSndCrdPrefFrameSizeFactor * SYSTEM_FRAME_SIZE_SAMPLES; iSndCrdPrefFrameSizeFactor * SYSTEM_FRAME_SIZE_SAMPLES;
// get actual sound card buffer size using preferred size // get actual sound card buffer size using preferred size
iMonoBlockSizeSam = Sound.Init ( iPrefMonoFrameSize ); iMonoBlockSizeSam = Sound.Init ( iPrefMonoFrameSize );
// Calculate the current sound card frame size factor. In case
// the current mono block size is not a multiple of the system
// frame size, we have to use a sound card conversion buffer.
if ( ( iMonoBlockSizeSam == ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_PREFERRED ) ) ||
( iMonoBlockSizeSam == ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_DEFAULT ) ) ||
( iMonoBlockSizeSam == ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_SAFE ) ) )
{
// regular case: one of our predefined buffer sizes is available
iSndCrdFrameSizeFactor = iMonoBlockSizeSam / SYSTEM_FRAME_SIZE_SAMPLES;
// no sound card conversion buffer required
iSndCardMonoBlockSizeSamConvBuff = 0; // this is important!
bSndCrdConversionBufferRequired = false;
}
else
{
// An unsupported sound card buffer size is currently used -> we have
// to use a conversion buffer. Per definition we use the smallest buffer
// size as llcon frame size
// store actual sound card buffer size (stereo)
iSndCardMonoBlockSizeSamConvBuff = iMonoBlockSizeSam;
const int iSndCardStereoBlockSizeSamConvBuff = 2 * iMonoBlockSizeSam;
// overwrite block size by smallest supported llcon buffer size
iSndCrdFrameSizeFactor = FRAME_SIZE_FACTOR_PREFERRED;
iMonoBlockSizeSam =
SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_PREFERRED;
iStereoBlockSizeSam = 2 * iMonoBlockSizeSam;
// inits for conversion buffer (the size of the conversion buffer must
// be the sum of input/output sizes which is the worst case fill level)
const int iConBufSize =
iStereoBlockSizeSam + iSndCardStereoBlockSizeSamConvBuff;
SndCrdConversionBufferIn.Init ( iConBufSize );
SndCrdConversionBufferOut.Init ( iConBufSize );
vecDataConvBuf.Init ( iStereoBlockSizeSam );
// the output conversion buffer must be filled with the inner
// block size for initialization (this is the latency which is
// introduced by the conversion buffer) to avoid buffer underruns
const CVector<int16_t> vZeros ( iStereoBlockSizeSam, 0 );
SndCrdConversionBufferOut.Put ( vZeros, vZeros.Size() );
bSndCrdConversionBufferRequired = true;
}
// calculate stereo (two channels) buffer size
iStereoBlockSizeSam = 2 * iMonoBlockSizeSam; iStereoBlockSizeSam = 2 * iMonoBlockSizeSam;
// TEST (we assume here that "iMonoBlockSizeSam" is divisible by
// "SYSTEM_FRAME_SIZE_SAMPLES")
// calculate actual frame size factor
iSndCrdFrameSizeFactor = max ( 1, iMonoBlockSizeSam / SYSTEM_FRAME_SIZE_SAMPLES );
vecsAudioSndCrdMono.Init ( iMonoBlockSizeSam ); vecsAudioSndCrdMono.Init ( iMonoBlockSizeSam );
vecsAudioSndCrdStereo.Init ( iStereoBlockSizeSam ); vecsAudioSndCrdStereo.Init ( iStereoBlockSizeSam );
vecdAudioStereo.Init ( iStereoBlockSizeSam ); vecdAudioStereo.Init ( iStereoBlockSizeSam );
@ -443,21 +427,49 @@ iSndCrdFrameSizeFactor = max ( 1, iMonoBlockSizeSam / SYSTEM_FRAME_SIZE_SAMPLES
// set the channel network properties // set the channel network properties
Channel.SetNetwFrameSizeAndFact ( iCeltNumCodedBytes, Channel.SetNetwFrameSizeAndFact ( iCeltNumCodedBytes,
iSndCrdFrameSizeFactor ); iSndCrdFrameSizeFactor );
}
// check sound card buffer sizes, if not supported, return error flag void CClient::AudioCallback ( CVector<int16_t>& psData, void* arg )
if ( ( iMonoBlockSizeSam != ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_PREFERRED ) ) && {
( iMonoBlockSizeSam != ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_DEFAULT ) ) && // get the pointer to the object
( iMonoBlockSizeSam != ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_SAFE ) ) ) CClient* pMyClientObj = reinterpret_cast<CClient*> ( arg );
// process audio data
pMyClientObj->ProcessSndCrdAudioData ( psData );
}
void CClient::ProcessSndCrdAudioData ( CVector<int16_t>& vecsStereoSndCrd )
{
// check if a conversion buffer is required or not
if ( bSndCrdConversionBufferRequired )
{ {
return false; // init was not successful // add new sound card block in conversion buffer
SndCrdConversionBufferIn.Put ( vecsStereoSndCrd, vecsStereoSndCrd.Size() );
// process all available blocks of data
while ( SndCrdConversionBufferIn.GetAvailData() >= iStereoBlockSizeSam )
{
// get one block of data for processing
SndCrdConversionBufferIn.Get ( vecDataConvBuf );
// process audio data
ProcessAudioDataIntern ( vecDataConvBuf );
SndCrdConversionBufferOut.Put ( vecDataConvBuf, vecDataConvBuf.Size() );
}
// get processed sound card block out of the conversion buffer
SndCrdConversionBufferOut.Get ( vecsStereoSndCrd );
} }
else else
{ {
return true; // ok // regular case: no conversion buffer required
// process audio data
ProcessAudioDataIntern ( vecsStereoSndCrd );
} }
} }
void CClient::ProcessAudioData ( CVector<int16_t>& vecsStereoSndCrd ) void CClient::ProcessAudioDataIntern ( CVector<int16_t>& vecsStereoSndCrd )
{ {
int i, j; int i, j;
@ -628,7 +640,8 @@ void CClient::UpdateSocketBufferSize()
// calculate current buffer setting // calculate current buffer setting
const double dAudioBufferDurationMs = const double dAudioBufferDurationMs =
iMonoBlockSizeSam * 1000 / SYSTEM_SAMPLE_RATE; ( iMonoBlockSizeSam + iSndCardMonoBlockSizeSamConvBuff ) *
1000 / SYSTEM_SAMPLE_RATE;
// jitter introduced in the server by the timer implementation // jitter introduced in the server by the timer implementation
const double dServerJitterMs = 0.666666; // ms const double dServerJitterMs = 0.666666; // ms

32
src/client.h
View file

@ -36,6 +36,7 @@
#include "socket.h" #include "socket.h"
#include "channel.h" #include "channel.h"
#include "util.h" #include "util.h"
#include "buffer.h"
#ifdef _WIN32 #ifdef _WIN32
# include "../windows/sound.h" # include "../windows/sound.h"
#else #else
@ -113,7 +114,7 @@ public:
// set the new socket size (number of frames) // set the new socket size (number of frames)
if ( !Channel.SetSockBufNumFrames ( iNumBlocks ) ) if ( !Channel.SetSockBufNumFrames ( iNumBlocks ) )
{ {
// if setting of socket buffer size was successful, // if setting of socket buffer size was successful,
// tell the server that size has changed // tell the server that size has changed
Channel.CreateJitBufMes ( iNumBlocks ); Channel.CreateJitBufMes ( iNumBlocks );
} }
@ -134,7 +135,20 @@ public:
void SetSndCrdPrefFrameSizeFactor ( const int iNewFactor ); void SetSndCrdPrefFrameSizeFactor ( const int iNewFactor );
int GetSndCrdPrefFrameSizeFactor() int GetSndCrdPrefFrameSizeFactor()
{ return iSndCrdPrefFrameSizeFactor; } { return iSndCrdPrefFrameSizeFactor; }
int GetSndCrdActualMonoBlSize() { return iMonoBlockSizeSam; }
int GetSndCrdActualMonoBlSize()
{
// the actual sound card mono block size depends on whether a
// sound card conversion buffer is used or not
if ( bSndCrdConversionBufferRequired )
{
return iSndCardMonoBlockSizeSamConvBuff;
}
else
{
return iMonoBlockSizeSam;
}
}
bool GetFraSiFactPrefSupported() { return bFraSiFactPrefSupported; } bool GetFraSiFactPrefSupported() { return bFraSiFactPrefSupported; }
bool GetFraSiFactDefSupported() { return bFraSiFactDefSupported; } bool GetFraSiFactDefSupported() { return bFraSiFactDefSupported; }
@ -153,7 +167,6 @@ public:
CChannel* GetChannel() { return &Channel; } CChannel* GetChannel() { return &Channel; }
// settings // settings
CVector<QString> vstrIPAddress; CVector<QString> vstrIPAddress;
QString strName; QString strName;
@ -162,8 +175,9 @@ protected:
// callback function must be static, otherwise it does not work // callback function must be static, otherwise it does not work
static void AudioCallback ( CVector<short>& psData, void* arg ); static void AudioCallback ( CVector<short>& psData, void* arg );
bool Init(); void Init();
void ProcessAudioData ( CVector<short>& vecsStereoSndCrd ); void ProcessSndCrdAudioData ( CVector<short>& vecsStereoSndCrd );
void ProcessAudioDataIntern ( CVector<short>& vecsStereoSndCrd );
void UpdateSocketBufferSize(); void UpdateSocketBufferSize();
// only one channel is needed for client application // only one channel is needed for client application
@ -192,6 +206,12 @@ protected:
int iSndCrdPrefFrameSizeFactor; int iSndCrdPrefFrameSizeFactor;
int iSndCrdFrameSizeFactor; int iSndCrdFrameSizeFactor;
bool bSndCrdConversionBufferRequired;
int iSndCardMonoBlockSizeSamConvBuff;
CBufferBase<int16_t> SndCrdConversionBufferIn;
CBufferBase<int16_t> SndCrdConversionBufferOut;
CVector<int16_t> vecDataConvBuf;
bool bFraSiFactPrefSupported; bool bFraSiFactPrefSupported;
bool bFraSiFactDefSupported; bool bFraSiFactDefSupported;
bool bFraSiFactSafeSupported; bool bFraSiFactSafeSupported;
@ -200,7 +220,7 @@ protected:
int iStereoBlockSizeSam; int iStereoBlockSizeSam;
bool bOpenChatOnNewMessage; bool bOpenChatOnNewMessage;
EGUIDesign eGUIDesign; EGUIDesign eGUIDesign;
CVector<int16_t> vecsAudioSndCrdMono; CVector<int16_t> vecsAudioSndCrdMono;
CVector<int16_t> vecsAudioSndCrdStereo; CVector<int16_t> vecsAudioSndCrdStereo;

14
src/global.h
View file

@ -145,17 +145,21 @@
#elif HAVE_INTTYPES_H #elif HAVE_INTTYPES_H
# include <inttypes.h> # include <inttypes.h>
#elif defined ( _WIN32 ) #elif defined ( _WIN32 )
typedef __int64 int64_t;
typedef __int32 int32_t; typedef __int32 int32_t;
typedef __int16 int16_t; typedef __int16 int16_t;
typedef unsigned __int64 uint64_t;
typedef unsigned __int32 uint32_t; typedef unsigned __int32 uint32_t;
typedef unsigned __int16 uint16_t; typedef unsigned __int16 uint16_t;
typedef unsigned __int8 uint8_t; typedef unsigned __int8 uint8_t;
#else #else
typedef int int32_t; typedef long int int64_t;
typedef short int16_t; typedef int int32_t;
typedef unsigned int uint32_t; typedef short int16_t;
typedef unsigned short uint16_t; typedef unsigned long int uint64_t;
typedef unsigned char uint8_t; typedef unsigned int uint32_t;
typedef unsigned short uint16_t;
typedef unsigned char uint8_t;
#endif #endif

376
windows/sound.cpp
View file

@ -46,7 +46,7 @@ ASIOCallbacks asioCallbacks;
int iASIOBufferSizeMono; int iASIOBufferSizeMono;
int iASIOBufferSizeStereo; int iASIOBufferSizeStereo;
CVector<short> vecsTmpAudioSndCrdStereo; CVector<int16_t> vecsTmpAudioSndCrdStereo;
QMutex ASIOMutex; QMutex ASIOMutex;
@ -275,14 +275,28 @@ QString CSound::CheckDeviceCapabilities()
} }
ASIOGetChannelInfo ( &channelInfos[i] ); ASIOGetChannelInfo ( &channelInfos[i] );
// only 16/24/32 LSB is supported // check supported sample formats
if ( ( channelInfos[i].type != ASIOSTInt16LSB ) && if ( ( channelInfos[i].type != ASIOSTInt16LSB ) &&
( channelInfos[i].type != ASIOSTInt24LSB ) && ( channelInfos[i].type != ASIOSTInt24LSB ) &&
( channelInfos[i].type != ASIOSTInt32LSB ) ) ( channelInfos[i].type != ASIOSTInt32LSB ) &&
( channelInfos[i].type != ASIOSTFloat32LSB ) &&
( channelInfos[i].type != ASIOSTFloat64LSB ) &&
( channelInfos[i].type != ASIOSTInt32LSB16 ) &&
( channelInfos[i].type != ASIOSTInt32LSB18 ) &&
( channelInfos[i].type != ASIOSTInt32LSB20 ) &&
( channelInfos[i].type != ASIOSTInt32LSB24 ) &&
( channelInfos[i].type != ASIOSTInt16MSB ) &&
( channelInfos[i].type != ASIOSTInt24MSB ) &&
( channelInfos[i].type != ASIOSTInt32MSB ) &&
( channelInfos[i].type != ASIOSTFloat32MSB ) &&
( channelInfos[i].type != ASIOSTFloat64MSB ) &&
( channelInfos[i].type != ASIOSTInt32MSB16 ) &&
( channelInfos[i].type != ASIOSTInt32MSB18 ) &&
( channelInfos[i].type != ASIOSTInt32MSB20 ) &&
( channelInfos[i].type != ASIOSTInt32MSB24 ) )
{ {
// return error string // return error string
return tr ( "Required audio sample format not " return tr ( "Required audio sample format not available." );
"available (16/24/32 bit LSB)." );
} }
} }
@ -428,7 +442,7 @@ void CSound::Stop()
CSoundBase::Stop(); CSoundBase::Stop();
} }
CSound::CSound ( void (*fpNewCallback) ( CVector<short>& psData, void* arg ), void* arg ) : CSound::CSound ( void (*fpNewCallback) ( CVector<int16_t>& psData, void* arg ), void* arg ) :
CSoundBase ( true, fpNewCallback, arg ) CSoundBase ( true, fpNewCallback, arg )
{ {
int i; int i;
@ -496,9 +510,9 @@ CSound::~CSound()
} }
// ASIO callbacks ------------------------------------------------------------- // ASIO callbacks -------------------------------------------------------------
ASIOTime* CSound::bufferSwitchTimeInfo ( ASIOTime *timeInfo, ASIOTime* CSound::bufferSwitchTimeInfo ( ASIOTime* timeInfo,
long index, long index,
ASIOBool processNow ) ASIOBool processNow )
{ {
bufferSwitch ( index, processNow ); bufferSwitch ( index, processNow );
return 0L; return 0L;
@ -521,37 +535,153 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
switch ( channelInfos[i].type ) switch ( channelInfos[i].type )
{ {
case ASIOSTInt16LSB: case ASIOSTInt16LSB:
// no type conversion required, just copy operation
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] = vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
( (short*) bufferInfos[i].buffers[index] )[iCurSample]; static_cast<int16_t*> ( bufferInfos[i].buffers[index] )[iCurSample];
} }
break; break;
case ASIOSTInt24LSB: case ASIOSTInt24LSB:
// NOT YET TESTED
// not yet tested, horrible things might happen with the following code ;-)
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
// convert current sample in 16 bit format
int iCurSam = 0; int iCurSam = 0;
memcpy ( &iCurSam, ( (char*) bufferInfos[i].buffers[index] ) + iCurSample * 3, 3 ); memcpy ( &iCurSam, ( (char*) bufferInfos[i].buffers[index] ) + iCurSample * 3, 3 );
iCurSam >>= 8; iCurSam >>= 8;
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] = vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<short> ( iCurSam ); static_cast<int16_t> ( iCurSam );
} }
break; break;
case ASIOSTInt32LSB: case ASIOSTInt32LSB:
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
// convert to 16 bit
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] = vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
(((int*) bufferInfos[i].buffers[index])[iCurSample] >> 16); static_cast<int16_t> ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] >> 16 );
} }
break; break;
case ASIOSTFloat32LSB: // IEEE 754 32 bit float, as found on Intel x86 architecture
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( static_cast<float*> (
bufferInfos[i].buffers[index] )[iCurSample] * _MAXSHORT );
}
break;
case ASIOSTFloat64LSB: // IEEE 754 64 bit double float, as found on Intel x86 architecture
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( static_cast<double*> (
bufferInfos[i].buffers[index] )[iCurSample] * _MAXSHORT );
}
break;
case ASIOSTInt32LSB16: // 32 bit data with 16 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] & 0xFFFF );
}
break;
case ASIOSTInt32LSB18: // 32 bit data with 18 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] & 0x3FFFF ) >> 2 );
}
break;
case ASIOSTInt32LSB20: // 32 bit data with 20 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] & 0xFFFFF ) >> 4 );
}
break;
case ASIOSTInt32LSB24: // 32 bit data with 24 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] & 0xFFFFFF ) >> 8 );
}
break;
case ASIOSTInt16MSB:
// NOT YET TESTED
// flip bits
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
Flip16Bits ( ( static_cast<int16_t*> (
bufferInfos[i].buffers[index] ) )[iCurSample] );
}
break;
case ASIOSTInt24MSB:
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB:
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// flip bits and convert to 16 bit
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] =
static_cast<int16_t> ( Flip32Bits ( static_cast<int32_t*> (
bufferInfos[i].buffers[index] )[iCurSample] ) >> 16 );
}
break;
case ASIOSTFloat32MSB: // IEEE 754 32 bit float, as found on Intel x86 architecture
// NOT YET TESTED
// TODO
break;
case ASIOSTFloat64MSB: // IEEE 754 64 bit double float, as found on Intel x86 architecture
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB16: // 32 bit data with 16 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB18: // 32 bit data with 18 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB20: // 32 bit data with 20 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB24: // 32 bit data with 24 bit alignment
// NOT YET TESTED
// TODO
break;
} }
} }
} }
@ -570,21 +700,22 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
switch ( channelInfos[i].type ) switch ( channelInfos[i].type )
{ {
case ASIOSTInt16LSB: case ASIOSTInt16LSB:
// no type conversion required, just copy operation
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
( (short*) bufferInfos[i].buffers[index] )[iCurSample] = static_cast<int16_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum]; vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum];
} }
break; break;
case ASIOSTInt24LSB: case ASIOSTInt24LSB:
// NOT YET TESTED
// not yet tested, horrible things might happen with the following code ;-)
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
// convert current sample in 24 bit format // convert current sample in 24 bit format
int iCurSam = static_cast<int> ( vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] ); int32_t iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
iCurSam <<= 8; iCurSam <<= 8;
memcpy ( ( (char*) bufferInfos[i].buffers[index] ) + iCurSample * 3, &iCurSam, 3 ); memcpy ( ( (char*) bufferInfos[i].buffers[index] ) + iCurSample * 3, &iCurSam, 3 );
@ -592,13 +723,151 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
break; break;
case ASIOSTInt32LSB: case ASIOSTInt32LSB:
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ ) for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{ {
// convert to 32 bit // convert to 32 bit
int iCurSam = static_cast<int> ( vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] ); const int32_t iCurSam = static_cast<int32_t> (
( (int*) bufferInfos[i].buffers[index] )[iCurSample] = ( iCurSam << 16 ); vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
( iCurSam << 16 );
} }
break; break;
case ASIOSTFloat32LSB: // IEEE 754 32 bit float, as found on Intel x86 architecture
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
const float fCurSam = static_cast<float> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<float*> ( bufferInfos[i].buffers[index] )[iCurSample] =
fCurSam / _MAXSHORT;
}
break;
case ASIOSTFloat64LSB: // IEEE 754 64 bit double float, as found on Intel x86 architecture
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
const double fCurSam = static_cast<double> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<double*> ( bufferInfos[i].buffers[index] )[iCurSample] =
fCurSam / _MAXSHORT;
}
break;
case ASIOSTInt32LSB16: // 32 bit data with 16 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// convert to 32 bit
const int32_t iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
iCurSam;
}
break;
case ASIOSTInt32LSB18: // 32 bit data with 18 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// convert to 32 bit
const int32_t iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
( iCurSam << 2 );
}
break;
case ASIOSTInt32LSB20: // 32 bit data with 20 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// convert to 32 bit
const int32_t iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
( iCurSam << 4 );
}
break;
case ASIOSTInt32LSB24: // 32 bit data with 24 bit alignment
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// convert to 32 bit
const int32_t iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
( iCurSam << 8 );
}
break;
case ASIOSTInt16MSB:
// NOT YET TESTED
// flip bits
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
( (int16_t*) bufferInfos[i].buffers[index] )[iCurSample] =
Flip16Bits ( vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
}
break;
case ASIOSTInt24MSB:
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB:
// NOT YET TESTED
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// convert to 32 bit and flip bits
int iCurSam = static_cast<int32_t> (
vecsTmpAudioSndCrdStereo[2 * iCurSample + bufferInfos[i].channelNum] );
static_cast<int32_t*> ( bufferInfos[i].buffers[index] )[iCurSample] =
Flip32Bits ( iCurSam << 16 );
}
break;
case ASIOSTFloat32MSB: // IEEE 754 32 bit float, as found on Intel x86 architecture
// NOT YET TESTED
// TODO
break;
case ASIOSTFloat64MSB: // IEEE 754 64 bit double float, as found on Intel x86 architecture
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB16: // 32 bit data with 16 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB18: // 32 bit data with 18 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB20: // 32 bit data with 20 bit alignment
// NOT YET TESTED
// TODO
break;
case ASIOSTInt32MSB24: // 32 bit data with 24 bit alignment
// NOT YET TESTED
// TODO
break;
} }
} }
} }
@ -613,7 +882,10 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
ASIOMutex.unlock(); ASIOMutex.unlock();
} }
long CSound::asioMessages ( long selector, long value, void* message, double* opt ) long CSound::asioMessages ( long selector,
long value,
void* message,
double* opt )
{ {
long ret = 0; long ret = 0;
switch ( selector ) switch ( selector )
@ -632,3 +904,57 @@ long CSound::asioMessages ( long selector, long value, void* message, double* op
} }
return ret; return ret;
} }
int16_t CSound::Flip16Bits ( const int16_t iIn )
{
uint16_t iMask = ( 1 << 15 );
int16_t iOut = 0;
for ( unsigned int i = 0; i < 16; i++ )
{
// copy current bit to correct position
iOut |= ( iIn & iMask ) ? 1 : 0;
// shift out value and mask by one bit
iOut <<= 1;
iMask >>= 1;
}
return iOut;
}
int32_t CSound::Flip32Bits ( const int32_t iIn )
{
uint32_t iMask = ( static_cast<uint32_t> ( 1 ) << 31 );
int32_t iOut = 0;
for ( unsigned int i = 0; i < 32; i++ )
{
// copy current bit to correct position
iOut |= ( iIn & iMask ) ? 1 : 0;
// shift out value and mask by one bit
iOut <<= 1;
iMask >>= 1;
}
return iOut;
}
int64_t CSound::Flip64Bits ( const int64_t iIn )
{
uint64_t iMask = ( static_cast<uint64_t> ( 1 ) << 63 );
int64_t iOut = 0;
for ( unsigned int i = 0; i < 64; i++ )
{
// copy current bit to correct position
iOut |= ( iIn & iMask ) ? 1 : 0;
// shift out value and mask by one bit
iOut <<= 1;
iMask >>= 1;
}
return iOut;
}

5
windows/sound.h
View file

@ -75,6 +75,11 @@ protected:
int GetActualBufferSize ( const int iDesiredBufferSizeMono ); int GetActualBufferSize ( const int iDesiredBufferSizeMono );
QString CheckDeviceCapabilities(); QString CheckDeviceCapabilities();
// utility functions
static int16_t Flip16Bits ( const int16_t iIn );
static int32_t Flip32Bits ( const int32_t iIn );
static int64_t Flip64Bits ( const int64_t iIn );
// audio hardware buffer info // audio hardware buffer info
struct sHWBufferInfo struct sHWBufferInfo
{ {