audSolaris.cpp
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上传日期:2007-06-06
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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 ***** */
- #include "audSolaris.h"
- #include "ihxpckts.h"
- #include "hxstrutl.h"
- #include <unistd.h>
- #include <fcntl.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <sys/ioctl.h>
- #include <sys/stropts.h> //for I_FLUSH
- #include <stdio.h>
- //------------------------------------------
- // Ctors and Dtors.
- //------------------------------------------
- CAudioOutSolaris::CAudioOutSolaris() :
- CAudioOutUNIX(),
- m_nDevID(NO_FILE_DESCRIPTOR),
- m_nMixerID(NO_FILE_DESCRIPTOR),
- m_nBlockDivisions(2)
- {
- };
- CAudioOutSolaris::~CAudioOutSolaris()
- {
- //The mixer may be used without the audio device. Make sure
- //it gets closed here.
- _CloseMixer();
- };
- //-------------------------------------------------------
- // These Device Specific methods must be implemented
- // by the platform specific sub-classes.
- //-------------------------------------------------------
- INT16 CAudioOutSolaris::_Imp_GetAudioFd(void)
- {
- return m_nDevID;
- }
- //Devic specific method to set the audio device characteristics. Sample rate,
- //bits-per-sample, etc.
- //Method *must* set member vars. m_unSampleRate and m_unNumChannels.
- HX_RESULT CAudioOutSolaris::_SetDeviceConfig( const HXAudioFormat* pFormat )
- {
- HX_RESULT retCode = RA_AOE_NOERR;
- audio_info stAudioinfo;
-
- if( m_nDevID < 0 )
- {
- retCode = RA_AOE_DEVNOTOPEN;
- }
- else
- {
- AUDIO_INITINFO( &stAudioinfo );
- stAudioinfo.play.sample_rate = pFormat->ulSamplesPerSec;
- stAudioinfo.record.sample_rate = pFormat->ulSamplesPerSec;
- stAudioinfo.play.channels = pFormat->uChannels;
- stAudioinfo.record.channels = pFormat->uChannels;
- stAudioinfo.play.precision = pFormat->uBitsPerSample;
- stAudioinfo.record.precision = pFormat->uBitsPerSample;
- stAudioinfo.play.encoding = AUDIO_ENCODING_LINEAR;
- stAudioinfo.record.encoding = AUDIO_ENCODING_LINEAR;
- // stAudioinfo.play.buffer_size = m_ulBytesPerGran;
- //Now set the new config.
- if( ::ioctl(m_nDevID, AUDIO_SETINFO, &stAudioinfo) < 0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "Error setting audio confign");
- #endif
- retCode = RA_AOE_GENERAL;
- }
- else
- {
- //Set member vars from CAudioOutUNIX.
- m_wBlockSize = m_ulBytesPerGran;
- m_unNumChannels = pFormat->uChannels;
- m_uSampFrameSize = pFormat->uBitsPerSample / 8;
- m_unSampleRate = pFormat->ulSamplesPerSec;
- //XXXgfw Is there a size? Doesn't look like it.
- //XXXgfw Lets just pick one that looks good.
- m_ulDeviceBufferSize = 1<<16;
- }
-
- AUDIO_INITINFO(&stAudioinfo);
- if( ::ioctl(m_nDevID, AUDIO_GETINFO, &stAudioinfo) < 0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris: Can't get audio configuration.n");
- #endif
- retCode = RA_AOE_GENERAL;
- }
- else
- {
- HX_ASSERT( stAudioinfo.play.sample_rate == m_unSampleRate );
- HX_ASSERT( stAudioinfo.play.channels == m_unNumChannels );
- HX_ASSERT( stAudioinfo.play.precision == m_uSampFrameSize*8 );
- HX_ASSERT( stAudioinfo.play.encoding == AUDIO_ENCODING_LINEAR );
- // HX_ASSERT( stAudioinfo.play.buffer_size == m_ulBytesPerGran );
- }
- }
- //XXXgfw
- // fprintf( stderr, "channels: %d FrameSize: %d SampleRate: %d BuffSize: %d BlockSize: %dn",
- // m_unNumChannels, m_uSampFrameSize, m_unSampleRate, m_ulDeviceBufferSize, m_wBlockSize);
- m_wLastError = retCode;
- return m_wLastError;
- }
- ULONG32 CAudioOutSolaris::_WriteWithEOF(UCHAR* buffer, ULONG32 ulBuffLength )
- {
- HX_ASSERT( ulBuffLength != 0 );
-
- ULONG32 lCount = ::write( m_nDevID, buffer, ulBuffLength);
- if( lCount > 0 )
- {
- //We wrote at least one byte. Write an EOF marker.
- char szEOF[1]; /* Flawfinder: ignore */
- if( ::write( m_nDevID, szEOF, 0) < 0 )
- {
- //Some sort of error. This is going to throw off our
- //ability to report the number of bytes played. We could
- //keep track of how many times this happens and then just
- //force a restart of the playback or something.
- HX_ASSERT( "_WriteWithEOF: Failed to write EOF" == NULL );
- }
- }
- else
- {
- HX_ASSERT( "_WriteWithEOF: Can't write to device." == NULL );
- }
- return lCount;
- }
- //Device specific method to write bytes out to the audiodevice and return a
- //count of bytes written.
- HX_RESULT CAudioOutSolaris::_WriteBytes( UCHAR* buffer, ULONG32 ulBuffLength, LONG32& lCount )
- {
- HX_ASSERT( ulBuffLength==m_wBlockSize);
-
- HX_RESULT retCode = RA_AOE_NOERR;
- if( m_nDevID < 0 )
- {
- retCode = RA_AOE_DEVNOTOPEN;
- }
- else if( ulBuffLength > 0 ) //Ignore all zero length writes. They screw up eof count.
- {
- //Try to increase resolution by splitting the write. ulBuffLength is
- //always even.
- HX_ASSERT( (m_wBlockSize%m_nBlockDivisions) == 0 );
-
- int i=0;
- int nChunkSize = m_wBlockSize/m_nBlockDivisions;
-
- for( i=0 ; i< m_nBlockDivisions ; i++ )
- {
- lCount = _WriteWithEOF( buffer+i*nChunkSize, nChunkSize );
- if( lCount < 0 )
- break;
- }
-
- if( lCount < 0 )
- {
- //Error occurred.
- if( errno == EAGAIN )
- retCode = RA_AOE_NOERR;
- if( errno == EINTR )
- retCode = RA_AOE_DEVBUSY;
- }
- else
- {
- lCount = m_wBlockSize/m_nBlockDivisions*i;
- }
- }
-
-
- return retCode;
- }
- //Device specific methods to open/close the mixer and audio devices.
- HX_RESULT CAudioOutSolaris::_OpenAudio()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
- //Check the environmental variable to let user overide default device.
- char *pszOverrideName = getenv( "AUDIO" ); /* Flawfinder: ignore */
- char szDevName[MAX_DEV_NAME+1]; /* Flawfinder: ignore */
-
- // Use defaults if no environment variable is set.
- if ( pszOverrideName && strlen(pszOverrideName)>0 )
- {
- SafeStrCpy( szDevName, pszOverrideName, MAX_DEV_NAME );
- }
- else
- {
- pszOverrideName = getenv( "AUDIODEV" ); /* Flawfinder: ignore */
- if ( pszOverrideName && strlen(pszOverrideName)>0 )
- {
- SafeStrCpy( szDevName, pszOverrideName, MAX_DEV_NAME );
- }
- else
- {
- SafeStrCpy( szDevName, "/dev/audio", MAX_DEV_NAME);
- }
- }
- szDevName[MAX_DEV_NAME]=' ';
-
- // Open the audio device if it isn't already open
- if ( m_nDevID < 0 )
- {
- //We open in non block mode first, just to test wether or not
- //someone has the audio device. After that we must reopen it
- //so that our writes always block.
- m_nDevID = ::open( szDevName, O_WRONLY | O_EXCL | O_NONBLOCK );
- if( m_nDevID >= 0 )
- {
- //XXXgfw Yeah, I know, why don't I just use ioctl(....,FIONBIO, ...);
- //or fcntl? because it doesn't work!
- close(m_nDevID);
- m_nDevID = ::open( szDevName, O_WRONLY | O_EXCL);
- }
-
- }
-
- if ( m_nDevID < 0 )
- {
- //Error opening device.
- retCode = RA_AOE_BADOPEN;
- }
- m_wLastError = retCode;
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_CloseAudio()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
-
- if( m_nDevID >= 0 )
- {
- ::close( m_nDevID );
- m_nDevID = NO_FILE_DESCRIPTOR;
- }
- else
- {
- retCode = RA_AOE_DEVNOTOPEN;
- }
- m_wLastError = retCode;
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_OpenMixer()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
- if(!m_bMixerPresent)
- {
- //Let user override default device with environ variable.
- char *pszOverrideName = getenv( "MIXER" ); /* Flawfinder: ignore */
- char szDevCtlName[MAX_DEV_NAME]; /* Flawfinder: ignore */
-
- if (pszOverrideName && strlen(pszOverrideName)>0 )
- {
- SafeStrCpy( szDevCtlName , pszOverrideName, MAX_DEV_NAME );
- }
- else
- {
- SafeStrCpy( szDevCtlName, "/dev/audioctl", MAX_DEV_NAME); // default for volume
- }
-
- m_nMixerID = ::open( szDevCtlName, O_RDWR );
-
- if (m_nMixerID > 0)
- {
- m_bMixerPresent = 1;
- _Imp_GetVolume();
- }
- else
- {
- m_nMixerID = NO_FILE_DESCRIPTOR;
- m_bMixerPresent = 0;
- }
- }
- m_wLastError = retCode;
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_CloseMixer()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
- if( m_nMixerID >= 0 )
- {
- ::close( m_nMixerID );
- m_nMixerID = NO_FILE_DESCRIPTOR;
- }
-
- m_wLastError = retCode;
- return m_wLastError;
- }
- //Device specific method to reset device and return it to a state that it
- //can accept new sample rates, num channels, etc.
- HX_RESULT CAudioOutSolaris::_Reset()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
-
- if ( m_nDevID < 0 )
- {
- retCode = RA_AOE_DEVNOTOPEN;
- }
- else if( ::ioctl(m_nDevID, I_FLUSH, FLUSHW) == -1 )
- {
- retCode = RA_AOE_GENERAL;
- }
- //Now, m_ulTotalWritten is going to go to Zero in CAudioOutUNIX.
- //So, we must reset the EOF marker.
- audio_info stAudioInfo;
- AUDIO_INITINFO( &stAudioInfo );
-
- //Fill in the structure with current settings.
- if (::ioctl(m_nDevID, AUDIO_GETINFO, &stAudioInfo) < 0)
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris: Just trying to reset EOF in _Reset.n");
- #endif
- }
- //Just change the gain setting. Must map incoming [0,100]-->[0,255]
- stAudioInfo.play.eof = 0;
- stAudioInfo.play.samples = 0;
- //Now store the new settings.
- if( ::ioctl(m_nMixerID, AUDIO_SETINFO, &stAudioInfo)<0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris: just trying to reset EOFn");
- #endif
- }
- m_wLastError = retCode;
- return m_wLastError;
- }
- //Device specific method to get/set the devices current volume.
- UINT16 CAudioOutSolaris::_GetVolume() const
- {
- UINT16 unVolume = 0;
- audio_info stAudioInfo;
-
- if (::ioctl( m_nMixerID, AUDIO_GETINFO, &stAudioInfo) < 0)
- {
- //What to do here? Should we close the mixer and pretend
- //we don't have one anymore?
- unVolume = m_uCurVolume;
- }
- else
- {
- //Map device specific volume levels to [0,100].
- unVolume = (UINT16) (((float)(stAudioInfo.play.gain-AUDIO_MIN_GAIN))*100.0 / (float)(AUDIO_MAX_GAIN-AUDIO_MIN_GAIN) + 0.5);
-
- }
- return unVolume;
- }
- HX_RESULT CAudioOutSolaris::_SetVolume(UINT16 unVolume)
- {
- HX_RESULT retCode = RA_AOE_NOERR;
- audio_info stAudioInfo;
- //Fill in the structure with current settings.
- if (::ioctl(m_nMixerID, AUDIO_GETINFO, &stAudioInfo) < 0)
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris: Can't get the audio configurationn");
- #endif
- retCode = RA_AOE_NOTSUPPORTED;
- }
- //Just change the gain setting. Must map incoming [0,100]-->[0,255]
- stAudioInfo.play.gain = (UINT16)((float)unVolume/100.0 *(float)(AUDIO_MAX_GAIN-AUDIO_MIN_GAIN) + AUDIO_MIN_GAIN + 0.5);
- //Now store the new settings.
- if( ::ioctl(m_nMixerID, AUDIO_SETINFO, &stAudioInfo)<0 )
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris: Can't set the audio configuration.n");
- #endif
- retCode = RA_AOE_NOTSUPPORTED;
- }
-
- m_wLastError = retCode;
- return m_wLastError;
- }
- //Device specific method to drain a device. This should play the remaining
- //bytes in the devices buffer and then return.
- HX_RESULT CAudioOutSolaris::_Drain()
- {
- HX_RESULT retCode = RA_AOE_NOERR;
-
- if ( m_nDevID < 0 )
- {
- retCode = RA_AOE_DEVNOTOPEN;
- }
- //XXXgfw We don't use _Drain anywhere right now. The problem
- //XXXgfw is that drain will block the proc until the buffers
- //XXXgfw are all drained. We don't want that. Just let it
- //XXXgfw play.
- // else if( ::ioctl (m_nDevID, AUDIO_DRAIN, 0) == -1 )
- // {
- // retCode = RA_AOE_GENERAL;
- // }
- m_wLastError = retCode;
- return m_wLastError;
- }
- UINT64 CAudioOutSolaris::_GetBytesActualyPlayed(void) const
- {
- UINT64 ulTheAnswer = 0;
- audio_info stAudioInfo;
- //Fill in the structure with current settings.
- AUDIO_INITINFO( &stAudioInfo );
- if (::ioctl(m_nDevID, AUDIO_GETINFO, &stAudioInfo) < 0)
- {
- #ifdef _DEBUG
- fprintf( stderr, "CAudioOutSolaris::_GetBytesActualyPlayed: Failure.n");
- #endif
- HX_ASSERT( "_GetBytesActualyPlayed: Error reading audio device"==NULL );
- ulTheAnswer = 0;
- }
- if( stAudioInfo.play.error )
- {
- //Underflow has occured.
- HX_ASSERT( "_GetBytesActualyPlayed: underflow in audio device"==NULL);
- }
-
- //We *always* right full blocks to the device. Well, in the
- //case of solaris, we don't use the rewind mechinism of CAudioOutUNIX
- //so this is true.
- ulTheAnswer = stAudioInfo.play.eof*m_wBlockSize/m_nBlockDivisions;
- //XXXgfw It would be so cool of we could count on the samples field.
- // ulTheAnswer = (ULONG32)stAudioInfo.play.samples*m_unNumChannels*m_uSampFrameSize;
- // fprintf( stderr, "m_ulTotalWritten: %lu Bytesplayed:%lu eof: %d samples: %d n",
- // m_ulTotalWritten, ulTheAnswer, stAudioInfo.play.eof, stAudioInfo.play.samples );
-
- return ulTheAnswer;
- }
- HX_RESULT CAudioOutSolaris::_GetRoomOnDevice(ULONG32& ulBytes) const
- {
- HX_RESULT retCode = RA_AOE_NOERR;
-
- ulBytes = m_ulDeviceBufferSize-(m_ulTotalWritten-_GetBytesActualyPlayed());
- m_wLastError = retCode;
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_CheckFormat( const HXAudioFormat* pFormat )
- {
- m_wLastError = RA_AOE_NOERR;
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_CheckSampleRate( ULONG32 ulSampleRate )
- {
- m_wLastError = RA_AOE_NOERR;
- //XXXgfw For now, just assume that it is supported.
-
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_Pause()
- {
- audio_info_t stAudioInfo;
- m_wLastError = HXR_OK;
- AUDIO_INITINFO(&stAudioInfo);
- stAudioInfo.play.pause = 1;
- if( ::ioctl(m_nDevID, AUDIO_SETINFO, &stAudioInfo) < 0 )
- {
- m_wLastError = RA_AOE_NOTSUPPORTED;
- }
- return m_wLastError;
- }
- HX_RESULT CAudioOutSolaris::_Resume()
- {
- audio_info_t stAudioInfo;
- m_wLastError = HXR_OK;
- AUDIO_INITINFO(&stAudioInfo);
- stAudioInfo.play.pause = 0;
- if( ::ioctl(m_nDevID, AUDIO_SETINFO, &stAudioInfo) < 0 )
- {
- m_wLastError = RA_AOE_NOTSUPPORTED;
- }
- return m_wLastError;
- }
- BOOL CAudioOutSolaris::_IsSelectable() const
- {
- return FALSE;
- }
- BOOL CAudioOutSolaris::_HardwarePauseSupported() const
- {
- return TRUE;
- }
-