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null-sink: Change block size to 50 msec when norewinds is set

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playing sound through null sink takes almost 2 seconds at first time
playback when norewinds is set. Because block_usec is set 2 seconds at
initializing time. The value will be changed 50 msec after calling
update_request_latency callback.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/406>
This commit is contained in:
Jaechul Lee 2020-11-06 10:52:33 +09:00 • committed by PulseAudio Marge Bot
parent 0fc54f9e7a
commit 1e7adb4fdb
1 changed files with 9 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/modules/module-null-sink.c
View file

@ -57,8 +57,8 @@ PA_MODULE_USAGE(
"norewinds=<disable rewinds>");
#define DEFAULT_SINK_NAME "null"
#define BLOCK_USEC (PA_USEC_PER_SEC * 2)
#define NOREWINDS_MAX_LATENCY_USEC (50*PA_USEC_PER_MSEC)
#define BLOCK_USEC (2 * PA_USEC_PER_SEC)
#define BLOCK_USEC_NOREWINDS (50 * PA_USEC_PER_MSEC)
struct userdata {
pa_core *core;
@ -318,6 +318,7 @@ int pa__init(pa_module*m) {
u->core = m->core;
u->module = m;
u->rtpoll = pa_rtpoll_new();
u->block_usec = BLOCK_USEC;
if (pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll) < 0) {
pa_log("pa_thread_mq_init() failed.");
@ -381,13 +382,15 @@ int pa__init(pa_module*m) {
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
u->block_usec = BLOCK_USEC;
nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
if(pa_modargs_get_value_boolean(ma, "norewinds", &u->norewinds) < 0){
pa_log("Invalid argument, norewinds expects a boolean value.");
}
if (u->norewinds)
u->block_usec = BLOCK_USEC_NOREWINDS;
nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
if(u->norewinds){
pa_sink_set_max_rewind(u->sink, 0);
} else {
@ -401,11 +404,7 @@ int pa__init(pa_module*m) {
goto fail;
}
if(u->norewinds){
pa_sink_set_latency_range(u->sink, 0, NOREWINDS_MAX_LATENCY_USEC);
} else {
pa_sink_set_latency_range(u->sink, 0, BLOCK_USEC);
}
pa_sink_set_latency_range(u->sink, 0, u->block_usec);
pa_sink_put(u->sink);