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* [newlib-cygwin/cygwin-3_4-branch] Cygwin: dsp: Fix SNDCTL_DSP_{POST,SYNC} ioctl() behaviour.
@ 2023-02-25 8:59 Takashi Yano
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From: Takashi Yano @ 2023-02-25 8:59 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=77f324ae03547c82b724ef5a35bd72b2ecf09e61
commit 77f324ae03547c82b724ef5a35bd72b2ecf09e61
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Sat Feb 25 10:28:34 2023 +0900
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>
Diff:
---
winsup/cygwin/fhandler/dsp.cc | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/winsup/cygwin/fhandler/dsp.cc b/winsup/cygwin/fhandler/dsp.cc
index cfbf6bec7..db7b2550e 100644
--- a/winsup/cygwin/fhandler/dsp.cc
+++ b/winsup/cygwin/fhandler/dsp.cc
@@ -133,6 +133,8 @@ class fhandler_dev_dsp::Audio_out: public Audio
int freq_;
int bits_;
int channels_;
+
+ friend fhandler_dev_dsp;
};
static void CALLBACK waveIn_callback (HWAVEIN hWave, UINT msg,
@@ -1417,11 +1419,16 @@ fhandler_dev_dsp::_ioctl (unsigned int cmd, void *buf)
return 0;
CASE (SNDCTL_DSP_POST)
+ if (audio_out_)
+ audio_out_->sendcurrent (); // force out last block whatever size..
+ return 0;
+
CASE (SNDCTL_DSP_SYNC)
- // Stop audio out device
- close_audio_out ();
- // Stop audio in device
- close_audio_in ();
+ if (audio_out_)
+ {
+ audio_out_->sendcurrent (); // force out last block whatever size..
+ audio_out_->waitforallsent (); // block till finished..
+ }
return 0;
default:
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