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Read all data from the Timidity++ pipe

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For non-Windows systems, read() may be non-blocking and can return less than
the requested amount if the timidity process hasn't written enough audio yet.
This commit is contained in:
Chris Robinson 2017-09-01 18:54:35 -07:00 committed by Rachael Alexanderson
parent 67936a2630
commit 5b3fbfde6d
1 changed files with 20 additions and 6 deletions
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22
src/sound/mididevices/music_timiditypp_mididevice.cpp
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@ -672,7 +672,6 @@ bool TimidityPPMIDIDevice::FillStream(SoundStream *stream, void *buff, int len,
}
}
#else
ssize_t got;
fd_set rfds;
struct timeval tv;
@ -697,11 +696,26 @@ bool TimidityPPMIDIDevice::FillStream(SoundStream *stream, void *buff, int len,
}
// fprintf(stderr,"something\n");
got = read(song->WavePipe[0], (uint8_t *)buff, len);
if (got < len)
ssize_t got = 0;
do {
ssize_t r = read(song->WavePipe[0], (uint8_t*)buff+got, len-got);
if(r < 0)
{
memset((uint8_t *)buff+got, 0, len-got);
if(errno == EWOULDBLOCK || errno == EAGAIN)
{
FD_ZERO(&rfds);
FD_SET(song->WavePipe[0], &rfds);
tv.tv_sec = 0;
tv.tv_usec = 50;
select(1, &rfds, NULL, NULL, &tv);
continue;
}
break;
}
got += r;
} while(got < len);
if(got < len)
memset((uint8_t*)buff+got, 0, len-got);
#endif
return true;
}