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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi all:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>></span><span lang=EN-US>After modified, the stuck issue was gone. I want to ask you guys, if this is a good idea or a bad one. If bad, do you have any other solutions?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>></span><span lang=EN-US>PS: I haven’t looked deep into the logic of calculate_freesize loop. So maybe there is a better way to break the loop which I have not found.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I trace the code and found something more!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>static gint<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>gst_directsound_sink_write (GstAudioSink * asink, gpointer data, guint length)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>{<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> ……<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> calculate_freesize:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:9.0pt'><span lang=EN-US>……<o:p></o:p></span></p><p class=MsoNormal style='text-indent:9.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> hRes = IDirectSoundBuffer_GetCurrentPosition (dsoundsink->pDSBSecondary,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> &dwCurrentPlayCursor, NULL);<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> hRes =<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> IDirectSoundBuffer_GetStatus (dsoundsink->pDSBSecondary, &dwStatus);<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> if (SUCCEEDED (hRes) && (dwStatus & DSBSTATUS_PLAYING))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> goto calculate_freesize;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> else {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> dsoundsink->first_buffer_after_reset = FALSE;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> GST_DSOUND_UNLOCK (dsoundsink);<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> return 0;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal style='text-indent:10.5pt'><span lang=EN-US>…… <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>If usb earphone was plugged out, IDirectSoundBuffer_GetCurrentPosition return some error code, which will be overwrote by IDirectSoundBuffer_GetStatus. So the hRes seemed success every time.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Treat the return values respectively, and the problem was soloved.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>--<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Yongjian<o:p></o:p></span></p></div></body></html>