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Cygwin: dsp: Fix SNDCTL_DSP_{POST,SYNC} ioctl() behaviour. 

Previously, SNDCTL_DSP_POST and SNDCTL_DSP_SYNC were implemented
wrongly. Due to this issue, module-oss of pulseaudio generates
choppy sound when SNDCTL_DSP_POST is called. This patch fixes that.

Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
This commit is contained in:
Takashi Yano 2023-02-25 10:28:34 +09:00
parent e95a7a7955
commit 0ab22f0af9
1 changed files with 11 additions and 4 deletions
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15
winsup/cygwin/fhandler/dsp.cc
View File

@ -133,6 +133,8 @@ class fhandler_dev_dsp::Audio_out: public Audio
int freq_; int freq_;
int bits_; int bits_;
int channels_; int channels_;
friend fhandler_dev_dsp;
}; };
static void CALLBACK waveIn_callback (HWAVEIN hWave, UINT msg, static void CALLBACK waveIn_callback (HWAVEIN hWave, UINT msg,
@ -1429,11 +1431,16 @@ fhandler_dev_dsp::_ioctl (unsigned int cmd, void *buf)
return 0; return 0;
CASE (SNDCTL_DSP_POST) CASE (SNDCTL_DSP_POST)
if (audio_out_)
audio_out_->sendcurrent (); // force out last block whatever size..
return 0;
CASE (SNDCTL_DSP_SYNC) CASE (SNDCTL_DSP_SYNC)
// Stop audio out device if (audio_out_)
close_audio_out (); {
// Stop audio in device audio_out_->sendcurrent (); // force out last block whatever size..
close_audio_in (); audio_out_->waitforallsent (); // block till finished..
}
return 0; return 0;
default: default: