mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-10-29 05:40:23 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

tests: Make loopback latency test more accurate

Browse source 
This makes sure that we always take the timing at the point when we
write out the pulse, making the overall latency measurement more
accurate.
This commit is contained in:
Arun Raghavan 2013-05-27 14:27:42 +05:30
parent e001cc1424
commit c6df40a539
1 changed files with 9 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

13
src/tests/lo-latency-test.c
View file

@ -54,12 +54,17 @@ static void nop_free_cb(void *p) {
static void write_cb(pa_stream *s, size_t nbytes, void *userdata) { static void write_cb(pa_stream *s, size_t nbytes, void *userdata) {
pa_lo_test_context *ctx = (pa_lo_test_context *) userdata; pa_lo_test_context *ctx = (pa_lo_test_context *) userdata;
static int ppos = 0; static int ppos = 0;
int r, nsamp = nbytes / ctx->fs; int r, nsamp;
/* Get the real requested bytes since the last write might have been
* incomplete if it caused a wrap around */
nbytes = pa_stream_writable_size(s);
nsamp = nbytes / ctx->fs;
if (ppos + nsamp > N_OUT) { if (ppos + nsamp > N_OUT) {
r = pa_stream_write(s, &out[ppos][0], (N_OUT - ppos) * ctx->fs, nop_free_cb, 0, PA_SEEK_RELATIVE); /* Wrap-around, write to end and exit. Next iteration will fill up the
nbytes -= (N_OUT - ppos) * ctx->fs; * rest */
ppos = 0; nbytes = (N_OUT - ppos) * ctx->fs;
} }
if (ppos == 0) if (ppos == 0)