From the manual of Sun Audio
http://docs.sun.com/app/docs/doc/816-5177/audio-7i?a=view
"
The audio_info_t structure may be initialized through the use of the
AUDIO_INITINFO macro. This macro sets all fields in the structure to
values that are ignored by the AUDIO_SETINFO command. For instance, the
following code switches the output port from the built-in speaker to the
headphone jack without modifying any other audio parameters:
audio_info_t info;
AUDIO_INITINFO(&info);
info.play.port = AUDIO_HEADPHONE;
err = ioctl(audio_fd, AUDIO_SETINFO, &info);
This technique eliminates problems associated with using a sequence of
AUDIO_GETINFO followed by AUDIO_SETINFO
"
So here is the patch .
please see the attachment.
Index: device/platform/unix/audSolaris.cpp
===================================================================
RCS file: /cvsroot/audio/device/platform/unix/audSolaris.cpp,v
retrieving revision 1.5.6.1
diff -u -r1.5.6.1 audSolaris.cpp
--- device/platform/unix/audSolaris.cpp 26 Oct 2006 19:35:59 -0000 1.5.6.1
+++ device/platform/unix/audSolaris.cpp 31 Oct 2008 09:48:28 -0000
@@ -427,15 +427,7 @@
{
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 configuration\n");
-#endif
- retCode = RA_AOE_NOTSUPPORTED;
- }
+ AUDIO_INITINFO(&stAudioInfo);
//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);
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