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pipe-sink: set correct latency

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The old pa_sink_set_fixed_latency() call didn't take into account that
other places use pa_frame_align() on the pa_pipe_buf() result, so the
configured latency could be sometimes slightly too high.

Adding a buffer_size variable in userdata makes it a bit easier to keep
all places that deal with the buffer size in sync.
This commit is contained in:
Tanu Kaskinen 2016-08-13 01:12:31 +03:00
parent df92274787
commit b6777d7f09
1 changed files with 6 additions and 3 deletions
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9
src/modules/module-pipe-sink.c
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@ -75,6 +75,7 @@ struct userdata {
char *filename;
int fd;
size_t buffer_size;
pa_memchunk memchunk;
@ -123,7 +124,7 @@ static int process_render(struct userdata *u) {
pa_assert(u);
if (u->memchunk.length <= 0)
pa_sink_render(u->sink, pa_frame_align(pa_pipe_buf(u->fd), &u->sink->sample_spec), &u->memchunk);
pa_sink_render(u->sink, u->buffer_size, &u->memchunk);
pa_assert(u->memchunk.length > 0);
@ -306,8 +307,10 @@ int pa__init(pa_module *m) {
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
pa_sink_set_max_request(u->sink, pa_frame_align(pa_pipe_buf(u->fd), &u->sink->sample_spec));
pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(pa_pipe_buf(u->fd), &u->sink->sample_spec));
u->buffer_size = pa_frame_align(pa_pipe_buf(u->fd), &u->sink->sample_spec);
pa_sink_set_max_request(u->sink, u->buffer_size);
pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->buffer_size, &u->sink->sample_spec));
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);