audaix.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- /*******************************************************************
- * audaix.cpp
- *
- * CLASS: CAudioOutAIX
- *
- * DESCRIPTION: AIX & UMS specific audio class implementation
- *
- *******************************************************************/
- #include <signal.h> // for getenv()
- #include <stdio.h>
- #include <stdlib.h> // for getenv()
- #include <math.h>
- #include <sys/types.h>
- #include <stropts.h> // for I_FLUSH ioctl
- #include <sys/conf.h>
- #include <sys/stat.h>
- #include <sys/file.h>
- #include <sys/ioctl.h>
- #include <sys/errno.h>
- #include <fcntl.h>
- #include <unistd.h>
- #include <errno.h>
- #include <string.h>
- #include <sys/audio.h>
- #include "hxcom.h"
- #include "hxresult.h"
- #include "hxengin.h"
- #include "ihxpckts.h" // for IHXBuffer
- #include "hxslist.h"
- #include "timeval.h"
- #include "audaix.h"
- #include "hxaudses.h"
- #include "hxtick.h"
- #include "chxpckts.h"
- #include "debug.h"
- #include "hxstrutl.h"
- #include <UMSBAUDDevice.xh>
- #include <UMSAudioDevice.xh>
- #include <UMSAudioTypes.xh>
- struct IHXCallback; // forward declaration needed for callback.
- // One and ONLY one of the following must be uncommented. They determine the
- // strategy used to determine the elaped time. The first is the preferred.
- #define AIX_TIME_BYTES_WRITTEN // function of bytes written vrs bytes in buffer.
- //**********************************************************************
- // constants.
- //
- // in UMS, balance is really an initial pan setting.
- // -100 = hard left, 0 is centered, 100 = hard right
- static const LONG32 lDefaultBalance = 0;
- static const LONG32 lDefaultVolume = 50; // UMS range is 0..100
- static LONG32 zlCurrentVolume = 50; // UMS range is 0..100
- // this is sufficient for PCI devices, for microchannel devices, set the
- // envar AUDIODEV to "/dev/maud0".
- static const char * szDefaultPortFilename = "/dev/paud0";
- static const char * moduleName = "CAudioOutAIX";
- // this will point to the SOM environment needed by the UMS subsystem
- static Environment* gpSomEnvironment = NULL;
- // static local routines, used to translate UMS message code to RMA types.
- static const char * getUMSAudioDeviceError( UMSAudioDevice_ReturnCode );
- static audio_error UMSErrorCodeToRACode( UMSAudioDevice_ReturnCode );
- CAudioOutAIX::CAudioOutAIX()
- : mixm_wID( -1 ),
- m_wState( RA_AOS_CLOSED ),
- m_wLastError( RA_AOE_NOERR ),
- m_bMixerPresent(FALSE),
- m_wBlockSize(0),
- m_ulLastNumBytes (0),
- m_ulBytesRemaining(0),
- m_ulTotalWritten(0),
- m_bFirstWrite (TRUE),
- m_pPlaybackCountCBTime(NULL),
- m_PendingCallbackID (0),
- m_bCallbackPending(FALSE),
- m_paused(FALSE),
- m_pWriteList(NULL),
- m_lLeftGain(100),
- m_lRightGain(100)
- {
-
- // set up UMS environment.
- gpSomEnvironment = somGetGlobalEnvironment();
- HX_ASSERT( gpSomEnvironment );
- m_pAudioDevice = new UMSBAUDDevice();
-
- // Get AUDIODEV environment var to find audio device of choice
- char *adev = (char*)getenv("AUDIODEV"); /* Flawfinder: ignore */
- char *mdev = (char*)getenv("MIXERDEV"); /* Flawfinder: ignore */
- // Use defaults if no environment variable is set.
- m_DevName[26] = NULL;
- m_DevCtlName[26] = NULL;
- if (adev && strlen(adev) > 0)
- SafeStrCpy(m_DevName, adev, 26);
- else
- SafeStrCpy(m_DevName, szDefaultPortFilename, 26);
- m_pPlaybackCountCBTime = new Timeval;
- if (mdev && strlen(mdev) > 0)
- SafeStrCpy(m_DevCtlName, mdev, 26);
- else
- SafeStrCpy(m_DevCtlName, szDefaultPortFilename, 26);
-
- m_pWriteList = new CHXSimpleList();
- // now configure our device.
- m_pAudioDevice->set_audio_format_type ( gpSomEnvironment, "PCM" );
- m_pAudioDevice->set_number_format ( gpSomEnvironment,
- "TWOS_COMPLEMENT" );
- m_pAudioDevice->set_byte_order ( gpSomEnvironment, "MSB" );
- m_pAudioDevice->set_time_format ( gpSomEnvironment,
- UMSAudioTypes_Msecs );
-
- m_pAudioDevice->set_balance ( gpSomEnvironment, lDefaultBalance );
- m_pAudioDevice->set_volume ( gpSomEnvironment, zlCurrentVolume );
- m_pAudioDevice->enable_output ( gpSomEnvironment, "LINE_OUT",
- &m_lLeftGain, &m_lRightGain );
- }
- CAudioOutAIX::~CAudioOutAIX()
- {
- if ( m_wState != RA_AOS_CLOSED )
- {
- _Imp_Close();
- m_wState = RA_AOS_CLOSED;
- }
-
- mixm_wID = -1;
- m_wState = RA_AOS_CLOSED;
- m_wLastError = RA_AOE_NOERR;
- m_bMixerPresent = FALSE;
- m_wBlockSize = 0;
- m_ulLastNumBytes = 0;
- m_ulBytesRemaining = 0;
- m_ulTotalWritten = 0;
-
- if (m_pScheduler)
- m_pScheduler->Release();
-
- m_PendingCallbackID = 0;
- m_bCallbackPending = TRUE;
-
- while(!m_pWriteList->IsEmpty())
- {
- IHXBuffer* pBuffer = (IHXBuffer*)m_pWriteList->RemoveHead();
- HX_RELEASE(pBuffer);
- }
- HX_DELETE(m_pWriteList);
-
- delete m_pAudioDevice;
- }
- /*
- * I do not open /dev/mixer to control volume, the volume is scaled
- * by the UMS device.
- * The device's volume has a range of 0..100.
- */
- UINT16 CAudioOutAIX::_Imp_GetVolume()
- {
- long volume;
- m_pAudioDevice->get_volume( gpSomEnvironment, &volume );
- return zlCurrentVolume;
- return (UINT16)volume;
- }
- HX_RESULT CAudioOutAIX::_Imp_SetVolume( const UINT16 uVolume )
- {
- m_pAudioDevice->set_volume( gpSomEnvironment, (long)uVolume );
- zlCurrentVolume = uVolume;
- return RA_AOE_NOERR;
- }
- /*
- * All UMS audio devices support volume.
- */
- BOOL CAudioOutAIX::_Imp_SupportsVolume()
- {
- return TRUE;
- }
- HX_RESULT CAudioOutAIX:: _Imp_Open( const HXAudioFormat* pFormatSupplied )
- {
- if( pFormatSupplied != NULL )
- m_pAudioFormat = pFormatSupplied;
-
- HX_ASSERT( m_pAudioFormat != NULL );
-
- // Get the core scheduler interface; Use this to schedule polling
- // the audio device for number of bytes played.
- if ( m_pContext )
- {
- m_pContext->QueryInterface(IID_IHXScheduler, (void**) &m_pScheduler );
- }
- // Check state. Could already be opened.
- if ( m_wState == RA_AOS_OPEN_PAUSED ||
- m_wState == RA_AOS_OPEN_PLAYING ||
- m_wState == RA_AOS_OPENING )
- return RA_AOE_NOERR;
-
- m_ulBlocksProcessed = 0;
- UMSAudioDevice_ReturnCode retCode =
- m_pAudioDevice->open( gpSomEnvironment, m_DevName, "PLAY", 0 );
-
- if( retCode != UMSAudioDevice_Success )
- {
- return HXR_FAILED;
- }
-
- m_wBlockSize = m_ulBytesPerGran; //m_pAudioFormat->uMaxBlockSize;
- m_uSampFrameSize = m_pAudioFormat->uBitsPerSample / 8;
-
- // Set device state
- m_wState = RA_AOS_OPENING;
-
- // Configure the audio device.
- AUDIOERROR iVal = SetDeviceConfig( m_pAudioFormat );
-
- return RA_AOE_NOERR;
- }
- HX_RESULT CAudioOutAIX::_Imp_Close()
- {
- m_wState = RA_AOS_CLOSED;
-
- // this will force the player to play all remaining data. If passed TRUE,
- // the call will block until finished playing. Do we want to call this?
- // m_pAudioDevice->play_remaining_data( gpSomEnvironment, TRUE );
- _Imp_Write(NULL);
-
- m_pAudioDevice->stop( gpSomEnvironment );
- m_pAudioDevice->close( gpSomEnvironment );
-
- // Remove callback from scheduler
- if (m_bCallbackPending)
- {
- m_pScheduler->Remove(m_PendingCallbackID);
- m_bCallbackPending = FALSE;
- }
-
- return RA_AOE_NOERR;
- }
- HX_RESULT CAudioOutAIX::_Imp_Write( const HXAudioData* pAudioOutHdr )
- {
- IHXBuffer* pBuffer = NULL;
- UCHAR* pData = NULL;
- UMSAudioTypes_Buffer adBuffer;
- UINT32* pTimeStamp = NULL;
-
- if ( m_bFirstWrite && pAudioOutHdr)
- {
- /* Initialize the playback callback time. */
- HXTimeval lTime = m_pScheduler->GetCurrentSchedulerTime();
- m_pPlaybackCountCBTime->tv_sec = lTime.tv_sec;
- m_pPlaybackCountCBTime->tv_usec = lTime.tv_usec;
- m_bFirstWrite = FALSE;
- ReschedPlaybackCheck();
- }
- if (pAudioOutHdr)
- {
- ++m_ulBlocksProcessed ;
-
- DPRINTF(D_INFO, ("_Imp_Write: buf len in milli-seconds: %lun",
- ((ULONG32) (( 1000.0
- / (m_num_channels * m_uSampFrameSize * m_sample_rate))
- * pAudioOutHdr->pData->GetSize()))));
- }
-
- // If we are paused, just add the block to the end of the WriteList.
- if (m_paused)
- {
- if (!pAudioOutHdr)
- return m_wLastError = RA_AOE_NOERR;
-
- IHXBuffer* pNewBuffer = new CHXBuffer();
- pNewBuffer->Set(pAudioOutHdr->pData->GetBuffer(),
- pAudioOutHdr->pData->GetSize());
- pNewBuffer->AddRef();
- m_pWriteList->AddTail(pNewBuffer);
-
- return RA_AOE_NOERR;
- }
-
- BOOL bWroteSomething;
- do {
- bWroteSomething = FALSE;
- if(m_pWriteList->GetCount() <= 0)
- {
- if(!pAudioOutHdr)
- return RA_AOE_NOERR;
-
- pData = (UCHAR*)pAudioOutHdr->pData->GetBuffer();
- adBuffer._length = pAudioOutHdr->pData->GetSize();
- }
- else
- {
- if (pAudioOutHdr)
- {
- IHXBuffer* pNewBuffer = new CHXBuffer();
- pNewBuffer->AddRef();
- pNewBuffer->Set(pAudioOutHdr->pData->GetBuffer(),
- pAudioOutHdr->pData->GetSize());
- m_pWriteList->AddTail(pNewBuffer);
- }
- pBuffer = (IHXBuffer*)m_pWriteList->RemoveHead();
- HX_ASSERT(pBuffer);
- pData = pBuffer->GetBuffer();
- adBuffer._length = pBuffer->GetSize();
- }
-
- // Write audio data to device.
- long count = 0;
- int wrote;
-
- adBuffer._buffer = pData;
- adBuffer._maximum = adBuffer._length;
-
- int nBytesPerSample = (m_bits_per_sample/8)* m_num_channels;
- long lSamplesToWrite = adBuffer._length / nBytesPerSample;
- long lSamplesWritten =0;
-
- int transferredCount = adBuffer._length;
- m_wLastError = RA_AOE_NOERR; // less work this way.
- UMSAudioDevice_ReturnCode retCode =
- m_pAudioDevice->write( gpSomEnvironment,
- &adBuffer,
- lSamplesToWrite,
- &lSamplesWritten );
- switch(retCode)
- {
- case UMSAudioDevice_Success :
- {
- int nBytesWritten = lSamplesWritten * nBytesPerSample;
- m_ulTotalWritten += nBytesWritten;
-
- HX_ASSERT(lSamplesWritten <= lSamplesToWrite);
- if( lSamplesWritten == lSamplesToWrite )
- {
- bWroteSomething = TRUE;
- }
- else
- {
- /* requeue the balance. */
- long lSamplesToRequeue = lSamplesToWrite - lSamplesWritten;
- IHXBuffer* pNewBuffer = new CHXBuffer();
- pNewBuffer->AddRef();
- pNewBuffer->Set( adBuffer._buffer + nBytesWritten,
- adBuffer._length - nBytesWritten );
- m_pWriteList->AddHead(pNewBuffer);
- }
- }
- break;
-
- case UMSAudioDevice_DeviceError : // indicates EWOULDBLOCK
- case UMSAudioDevice_Preempted :
- case UMSAudioDevice_Interrupted :
- {
- // just requeue the data
- IHXBuffer* pNewBuffer = new CHXBuffer();
- pNewBuffer->AddRef();
- pNewBuffer->Set( adBuffer._buffer, adBuffer._length );
- m_pWriteList->AddHead(pNewBuffer);
- break;
- }
-
- default : // failure!
- HX_ASSERT(FALSE);
- m_wLastError = UMSErrorCodeToRACode( retCode );
- }
-
- INT32 newRefCount = 0;
- if( pBuffer )
- newRefCount = pBuffer->Release();
- HX_ASSERT(newRefCount == 0);
- pBuffer = NULL;
- pAudioOutHdr = NULL; // don't add the same buffer again...
- } while (bWroteSomething);
-
- return m_wLastError;
- }
- // Seek() is never called.
- HX_RESULT CAudioOutAIX::_Imp_Seek(ULONG32 ulSeekTime)
- {
- return HXR_OK;
- }
- HX_RESULT CAudioOutAIX::_Imp_Pause()
- {
- m_paused = TRUE;
-
- return RA_AOE_NOERR;
- }
- HX_RESULT CAudioOutAIX::_Imp_Resume()
- {
- m_paused = FALSE;
- return RA_AOE_NOERR;
- }
- /////////////////////////////////////////////////////////////////////////
- // Imp_Reset()
- // Reset the device. It is important to note that this call results
- // from a seek, so we must act accordingly.
- //
- HX_RESULT CAudioOutAIX::_Imp_Reset()
- {
- _Imp_Close();
- _Imp_Open(NULL);
- while(!m_pWriteList->IsEmpty())
- {
- IHXBuffer* pBuffer = (IHXBuffer*)m_pWriteList->RemoveHead();
- HX_RELEASE(pBuffer);
- }
- HX_ASSERT( m_pWriteList->IsEmpty() );
- // these are vital! If they are not set this way, playback after a seek
- // will just stop after a few frames.
- m_bPaused = FALSE;
- m_bFirstWrite = TRUE;
- // and these are fairly obvious, but necessary after a seek. It should be
- // noted here that the audio timeline after a seek is relative to the
- // internal timeline of the core scheduler; all our playback is based from
- // our start.
- m_ulTotalWritten =0;
- m_ulCurrentTime = 0;
-
- return RA_AOE_NOERR;
- }
- // this will force the player to play all remaining data. The call
- // will block until finished playing - if this is not what is desired,
- // change the second parameter of the call to FALSE.
- HX_RESULT CAudioOutAIX::_Imp_Drain()
- {
- // -pjg need to drain the WriteList also.
- // this will force the player to play all remaining data. If passed TRUE,
- // the call will block until finished playing.
- while(!m_pWriteList->IsEmpty())
- {
- IHXBuffer* pBuffer = (IHXBuffer*)m_pWriteList->RemoveHead();
- HX_RELEASE(pBuffer);
- }
- m_pAudioDevice->play_remaining_data( gpSomEnvironment, TRUE );
-
- return RA_AOE_NOERR;
- }
- AUDIOERROR CAudioOutAIX::SetDeviceConfig( const HXAudioFormat* pFormat )
- {
- m_pAudioDevice->set_sample_rate ( gpSomEnvironment,
- pFormat->ulSamplesPerSec,
- &m_oSamples );
- m_pAudioDevice->set_number_of_channels ( gpSomEnvironment,
- pFormat->uChannels );
- m_pAudioDevice->set_bits_per_sample ( gpSomEnvironment,
- pFormat->uBitsPerSample );
- m_pAudioDevice->set_audio_format_type ( gpSomEnvironment, "PCM" );
- m_pAudioDevice->set_number_format ( gpSomEnvironment,
- "TWOS_COMPLEMENT" );
- m_pAudioDevice->set_byte_order ( gpSomEnvironment, "MSB" );
- m_pAudioDevice->set_time_format ( gpSomEnvironment,
- UMSAudioTypes_Msecs );
-
- m_pAudioDevice->set_balance ( gpSomEnvironment, lDefaultBalance );
- m_pAudioDevice->set_volume ( gpSomEnvironment, zlCurrentVolume );
- m_pAudioDevice->enable_output ( gpSomEnvironment, "LINE_OUT",
- &m_lLeftGain, &m_lRightGain );
-
- m_pAudioDevice->initialize ( gpSomEnvironment );
-
- m_pAudioDevice->start ( gpSomEnvironment );
-
- m_num_channels = pFormat->uChannels;
- m_sample_rate = pFormat->ulSamplesPerSec;
- m_bits_per_sample = pFormat->uBitsPerSample;
-
- return RA_AOE_NOERR;
- }
- HX_RESULT CAudioOutAIX::_Imp_CheckFormat( const HXAudioFormat* pFormat )
- {
- // Check for valid format inputs.
- if ( pFormat->uChannels != 1 && pFormat->uChannels != 2 )
- {
- return HXR_FAIL;
- }
- if ( pFormat->uBitsPerSample != 8 && pFormat->uBitsPerSample != 16 )
- {
- return HXR_FAIL;
- }
-
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * CAudioOutAIX::_Imp_GetCurrentTime
- * Purpose:
- * Get the current time from the audio device.
- * We added this to support the clock available in the
- * Window's audio driver.
- *
- * Current time is simply a function of the total number of
- * bytes written to the device minus the number still in
- * the device queue. This is expressed as playbackbytes.
- *
- * Ported to Aix 4.3.1 by fhutchinson, Jan 1999.
- *
- * The minitimer below is a simple timer employed to avoid excessive
- * calls to the UMS audio driver to get the current time, the rationale
- * being that a gettimeofday call and a little arithmetic is less expensive
- * than a call to the driver. The threshold value is the number of
- * microseconds (1/1,000,000 sec) that must pass before the time goes off.
- */
- #include <string.h> // for strerror()
- HX_RESULT CAudioOutAIX::_Imp_GetCurrentTime( ULONG32& ulCurrentTime )
- {
- long lBytesPerSample = m_bits_per_sample/8;
- long lBytesStillInDeviceBuffer;
- ulCurrentTime = m_ulCurrentTime;
- UMSAudioDevice_ReturnCode retCode;
-
- // set the device to return the amount of data still in the device buffer as a
- // number of bytes
- retCode = m_pAudioDevice->set_time_format( gpSomEnvironment, UMSAudioTypes_Bytes );
- if( retCode != UMSAudioDevice_Success )
- {
- m_wLastError = UMSErrorCodeToRACode( retCode );
- return (m_wLastError = UMSErrorCodeToRACode( retCode ) );
- }
-
- retCode = m_pAudioDevice->write_buff_used( gpSomEnvironment, &lBytesStillInDeviceBuffer );
- if( retCode != UMSAudioDevice_Success )
- {
- // almost certainly because the device is not opened.
- return (m_wLastError = UMSErrorCodeToRACode( retCode ) );
- }
-
- long lBytesPlayed = m_ulTotalWritten - lBytesStillInDeviceBuffer;
-
- m_ulCurrentTime = ulCurrentTime =
- ( (lBytesPlayed /lBytesPerSample) /
- (float)m_sample_rate * 1000 / m_num_channels );
-
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * CAudioOutAIX::_Imp_GetAudioFd
- * Purpose: Intended to return the file descriptor of the device.
- * However, UMS is not file descriptor-based, so we
- * return a -1, generally accepted as a closed device fd.
- */
- INT16 CAudioOutAIX::_Imp_GetAudioFd()
- {
- return -1;
- }
- /************************************************************************
- * Method:
- * CAudioOutAIX::DoTimeSyncs
- * Purpose:
- * Manual time syncs! Fork!
- */
- void CAudioOutAIX::DoTimeSyncs()
- {
- ReschedPlaybackCheck();
- OnTimeSync(); // XXXDMB // hxaudev.cpp::CHXAudioDevice::OnTimeSync()
-
- return;
- }
- /************************************************************************
- * Method:
- * CAudioOutAIX::ReschedPlaybackCheck()
- * Purpose:
- * Reschedule playback callback.
- */
- HX_RESULT CAudioOutAIX::ReschedPlaybackCheck()
- {
- HX_RESULT theErr = HXR_OK;
-
- if (m_bCallbackPending)
- return theErr;
- *m_pPlaybackCountCBTime += (int) (m_ulGranularity*1000) / 2;
- // Put this back in the scheduler.
- HXPlaybackCountCb* pCallback = 0;
- pCallback = new HXPlaybackCountCb(TRUE);
- if (pCallback)
- {
- pCallback->m_pAudioDeviceObject = this;
- m_bCallbackPending = TRUE;
- m_PendingCallbackID =
- m_pScheduler->AbsoluteEnter(pCallback,*((HXTimeval*)m_pPlaybackCountCBTime)) ;
- }
- else
- theErr = HXR_OUTOFMEMORY; // but ignored, why?
-
- return theErr;
- }
- UINT16 CAudioOutAIX::_NumberOfBlocksRemainingToPlay(void)
- {
- ULONG32 ulCurTime = 0;
- GetCurrentAudioTime(ulCurTime);
-
- UINT32 bytesBuffered = 0;
- LISTPOSITION i = m_pWriteList->GetHeadPosition();
-
- while (i)
- {
- bytesBuffered += ((IHXBuffer *)m_pWriteList->GetAt(i)) -> GetSize();
- m_pWriteList->GetNext(i);
- }
- m_pAudioDevice->set_time_format( gpSomEnvironment, UMSAudioTypes_Bytes );
- long lBytesStillInDeviceBuffer;
- UINT32 tries = 100;
- UMSAudioDevice_ReturnCode retCode;
- while (--tries &&
- (m_pAudioDevice->write_buff_used( gpSomEnvironment, &lBytesStillInDeviceBuffer )) != UMSAudioDevice_Success);
- if (!tries)
- {
- HX_ASSERT(FALSE);
- // don't know what to do!
- }
- UINT16 blocks =
- (bytesBuffered + lBytesStillInDeviceBuffer) / m_wBlockSize + 1;
- //UINT16 blocks = (int) (((double)bytesBuffered + lBytesStillInDeviceBuffer) /
- // m_ulBytesPerGran) + 1;
- return blocks;
- }
- // CAudioOutAIX::HXPlaybackCountCb
- CAudioOutAIX::HXPlaybackCountCb::HXPlaybackCountCb(BOOL timed)
- : m_lRefCount (0),
- m_pAudioDeviceObject (0),
- m_timed(timed)
- {
- }
- CAudioOutAIX::HXPlaybackCountCb::~HXPlaybackCountCb()
- {
- }
- /*
- * IUnknown methods
- */
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- // Purpose:
- // Implement this to export the interfaces supported by your
- // object.
- //
- STDMETHODIMP CAudioOutAIX::HXPlaybackCountCb::QueryInterface(REFIID riid, void** ppvObj)
- {
- if (IsEqualIID(riid, IID_IHXCallback))
- {
- AddRef();
- *ppvObj = (IHXCallback*)this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IUnknown))
- {
- AddRef();
- *ppvObj = this;
- return HXR_OK;
- }
-
- *ppvObj = NULL;
- return HXR_NOINTERFACE;
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::AddRef
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) CAudioOutAIX::HXPlaybackCountCb::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) CAudioOutAIX::HXPlaybackCountCb::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- /*
- * IHXPlaybackCountCb methods
- */
- STDMETHODIMP CAudioOutAIX::HXPlaybackCountCb::Func(void)
- {
- if (m_pAudioDeviceObject)
- {
- if(!m_timed)
- {
- m_pAudioDeviceObject->_Imp_Write(NULL);
- }
- else
- {
- m_pAudioDeviceObject->_Imp_Write(NULL);
- m_pAudioDeviceObject->m_bCallbackPending = FALSE;
- m_pAudioDeviceObject->DoTimeSyncs();
- }
- }
- return HXR_OK;
- }
- //
- // getUMSAudioDeviceError()
- //
- // returns the string description of the given UMS error code
- //
- static const char * getUMSAudioDeviceError( UMSAudioDevice_ReturnCode code )
- {
- switch( code )
- {
- case UMSAudioDevice_Success : return "Success";
- case UMSAudioDevice_InvalidParam : return "Invalid parameter";
- case UMSAudioDevice_MemoryError : return "Success";
- case UMSAudioDevice_DeviceNotAvail : return "Device is not available";
- case UMSAudioDevice_Preempted : return "Preempted";
- case UMSAudioDevice_Interrupted : return "Inerrupted";
- case UMSAudioDevice_DeviceError : return "Device error";
-
- // make sure this is last before default case.
- case UMSAudioDevice_Failure : return "undescribed error";
- default : break;
-
- }
- return "Unknown error";
- }
- //
- // UMSErrorCodeToRACode()
- //
- // Converts the UMS return code to a best-guess RMA return code equivalent.
- //
- audio_error UMSErrorCodeToRACode( UMSAudioDevice_ReturnCode retCode )
- {
- switch( retCode )
- {
- case UMSAudioDevice_Success : return RA_AOE_NOERR;
- case UMSAudioDevice_InvalidParam : return RA_AOE_INVALPARAM;
- case UMSAudioDevice_DeviceNotAvail : return RA_AOE_BADDEVICEID;
- case UMSAudioDevice_NoDevice : return RA_AOE_BADDEVICEID;
- case UMSAudioDevice_IncompatibleSettings : return RA_AOE_BADFORMAT ;
- case UMSAudioDevice_NotOpen : return RA_AOE_DEVNOTOPEN ;
- case UMSAudioDevice_NotReady : return RA_AOE_DEVBUSY ;
- case UMSAudioDevice_SettingsChanged : return RA_AOE_BADFORMAT ;
- // this is a stretch...
- case UMSAudioDevice_DeviceError : return RA_AOE_BADWRITE ;
- case UMSAudioDevice_NotSupported : return RA_AOE_NOTSUPPORTED ;
- // and these we will classify under general for now.
- case UMSAudioDevice_Interrupted : ;
- case UMSAudioDevice_Preempted : ;
- case UMSAudioDevice_MemoryError : ;
- case UMSAudioDevice_Failure : ;
- case UMSAudioDevice_UnderRun : ;
- case UMSAudioDevice_OverRun : ;
- default : break;
- }
- return RA_AOE_GENERAL;
- }