* fhandler_dsp.cc (fhandler_dev_dsp::ioctl): Add implementation

	for ioctl codes SNDCTL_DSP_CHANNELS and SNDCTL_DSP_GETCAPS.

1 files changed, 39 insertions, 0 deletions

diff --git a/winsup/cygwin/fhandler_dsp.cc b/winsup/cygwin/fhandler_dsp.cc
index b614ede73..d9ce7d7b4 100644
--- a/winsup/cygwin/fhandler_dsp.cc
+++ b/winsup/cygwin/fhandler_dsp.cc
@@ -1370,6 +1370,38 @@ fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr)
       }
       break;
 
+      CASE (SNDCTL_DSP_CHANNELS)
+      {
+	int nChannels = *intptr;
+
+	if (audio_out_)
+	  {	    
+	    RETURN_ERROR_WHEN_BUSY (audio_out_);
+	    audio_out_->stop ();
+	    if (audio_out_->query (audiofreq_, audiobits_, nChannels))
+	      audiochannels_ = nChannels;
+	    else
+	      {
+		*intptr = audiochannels_;
+		return -1;
+	      }
+	  }
+	if (audio_in_)
+	  {
+	    RETURN_ERROR_WHEN_BUSY (audio_in_);
+	    audio_in_->stop ();
+	    if (audio_in_->query (audiofreq_, audiobits_, nChannels))
+	      audiochannels_ = nChannels;
+	    else
+	      {
+		*intptr = audiochannels_;
+		return -1;
+	      }
+	  }
+	return 0;
+      }
+      break;
+
       CASE (SNDCTL_DSP_GETOSPACE)
       {
 	audio_buf_info *p = (audio_buf_info *) ptr;
@@ -1399,6 +1431,13 @@ fhandler_dev_dsp::ioctl (unsigned int cmd, void *ptr)
       }
       break;
 
+      CASE (SNDCTL_DSP_GETCAPS)
+      {
+	*intptr = DSP_CAP_BATCH | DSP_CAP_DUPLEX;
+	return 0;
+      }
+      break;
+
       CASE (SNDCTL_DSP_POST)
       CASE (SNDCTL_DSP_SYNC)
       {