I got buffer underruns when moving sinks for a "live" stream. Flag "adjust_latency" will decrease the latency each time when I move the sink and can cause buffer underrun. http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-June/010146.html Is it OK to set a minimum total latency (300ms) for a "live" (phone) playback stream, considering that a BT headset sink has a fixed latency of 128ms? Thanks Amanda diff --git a/pulseaudio-0.9.22/src/pulsecore/protocol-native.c b/pulseaudio-0.9.22/src/pulsecore/protocol-native.c index 4952ee4..570a0c7 100755 --- a/pulseaudio-0.9.22/src/pulsecore/protocol-native.c +++ b/pulseaudio-0.9.22/src/pulsecore/protocol-native.c @@ -856,6 +856,8 @@ static int playback_stream_process_msg(pa_msgobject *o, int code, void*userdata, } /* Called from main context */ +#define MIN_PHONE_TOTAL_LATENCY_USEC 300000 + static void fix_playback_buffer_attr(playback_stream *s) { size_t frame_size, max_prebuf; pa_usec_t orig_tlength_usec, tlength_usec, orig_minreq_usec, minreq_usec, sink_usec; @@ -933,6 +935,13 @@ static void fix_playback_buffer_attr(playback_stream *s) { * able to fulfill it and give the application also minreq * time to fill it up again for the next request Makes 2 times * minreq in plus.. */ + const char *role; + + role = pa_proplist_gets(s->sink_input->proplist, PA_PROP_MEDIA_ROLE); + if(role && pa_streq("phone", role)) { + if(tlength_usec < MIN_PHONE_TOTAL_LATENCY_USEC) + tlength_usec = MIN_PHONE_TOTAL_LATENCY_USEC; + } if (tlength_usec > minreq_usec*2) sink_usec = (tlength_usec - minreq_usec*2)/2; -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20110613/2e277249/attachment.htm>
