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pacat: make pacat respond to cork/uncork events

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Pacat remembers the number of cork requests, and then cork/uncork the stream
accordingly.

With this change, it makes below test script work correctly:

	pacat -p --property=media.role="music" <long-sound> &
	sleep 2
	pacat -p --property=media.role="phone" <short-sound>
	wait

Initial idea by Lu Guanqun, but modified by Colin Guthrie (so blame
me if it's broken)
This commit is contained in:
Lu Guanqun 2011-08-23 14:18:22 +08:00 • committed by Colin Guthrie
parent c862c5caa4
commit cef16430d0
1 changed files with 20 additions and 0 deletions
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20
src/utils/pacat.c
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@ -91,6 +91,8 @@ static int32_t latency_msec = 0, process_time_msec = 0;
static pa_bool_t raw = TRUE;
static int file_format = -1;
static uint32_t cork_requests = 0;
/* A shortcut for terminating the application */
static void quit(int ret) {
pa_assert(mainloop_api);
@ -408,6 +410,24 @@ static void stream_event_callback(pa_stream *s, const char *name, pa_proplist *p
t = pa_proplist_to_string_sep(pl, ", ");
pa_log("Got event '%s', properties '%s'", name, t);
if (pa_streq(name, PA_STREAM_EVENT_REQUEST_CORK)) {
if (cork_requests == 0) {
pa_log(_("Cork request stack is empty: corking stream"));
pa_operation_unref(pa_stream_cork(s, 1, NULL, NULL));
}
cork_requests++;
} else if (pa_streq(name, PA_STREAM_EVENT_REQUEST_UNCORK)) {
if (cork_requests == 1) {
pa_log(_("Cork request stack is empty: uncorking stream"));
pa_operation_unref(pa_stream_cork(s, 0, NULL, NULL));
}
if (cork_requests == 0)
pa_log(_("Warning: Received more uncork requests than cork requests!"));
else
cork_requests--;
}
pa_xfree(t);
}