If some event caused some larger playback hickup the fine-grained timer
adjust isn't able to recover. Use a buffer overruns as indicator for
that. Reset timer adjust logic in case we detected one.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id:
20180622111200.30561-5-kraxel@redhat.com
int64_t to_transfer = audio_MIN(wpos - rpos, avail);
+ if (wpos - rpos == B_SIZE) {
+ /* drop buffer, reset timer adjust */
+ st->rpos = 0;
+ st->wpos = 0;
+ st->buft_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ trace_hda_audio_overrun(st->node->name);
+ return;
+ }
+
hda_timer_sync_adjust(st, (wpos - rpos) - to_transfer - (B_SIZE >> 1));
while (to_transfer) {
hda_audio_running(const char *stream, int nr, bool running) "st %s, nr %d, run %d"
hda_audio_format(const char *stream, int chan, const char *fmt, int freq) "st %s, %d x %s @ %d Hz"
hda_audio_adjust(const char *stream, int pos) "st %s, pos %d"
+hda_audio_overrun(const char *stream) "st %s"