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author | Lennart Poettering <lennart@poettering.net> | 2004-09-16 00:05:56 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2004-09-16 00:05:56 +0000 |
commit | f9e2058820c2a51994708ad11d1ed8e09b12b8b1 (patch) | |
tree | 5277545f0b8b9534590d20c32d0d3e1acc2a9982 /polyp/module-alsa-source.c | |
parent | f5d47a293aa32a8273ef02c597cb263527726465 (diff) |
add input latency measurement
add GETOSPACE support to module-oss
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@205 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'polyp/module-alsa-source.c')
-rw-r--r-- | polyp/module-alsa-source.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/polyp/module-alsa-source.c b/polyp/module-alsa-source.c index cf828eb0..41a17691 100644 --- a/polyp/module-alsa-source.c +++ b/polyp/module-alsa-source.c @@ -143,6 +143,20 @@ static void io_callback(struct pa_mainloop_api*a, struct pa_io_event *e, int fd, do_read(u); } +static pa_usec_t source_get_latency_cb(struct pa_source *s) { + struct userdata *u = s->userdata; + snd_pcm_sframes_t frames; + assert(s && u && u->source); + + if (snd_pcm_delay(u->pcm_handle, &frames) < 0) { + pa_log(__FILE__": failed to get delay\n"); + s->get_latency = NULL; + return 0; + } + + return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec); +} + int pa__init(struct pa_core *c, struct pa_module*m) { struct pa_modargs *ma = NULL; int ret = -1; @@ -191,6 +205,7 @@ int pa__init(struct pa_core *c, struct pa_module*m) { assert(u->source); u->source->userdata = u; + u->source->get_latency = source_get_latency_cb; pa_source_set_owner(u->source, m); u->source->description = pa_sprintf_malloc("Advanced Linux Sound Architecture PCM on '%s'", dev); |