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PulseAudio: pass the latency test

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This commit is contained in:
Andrew Kelley 2015-11-01 12:39:21 -07:00
parent 8e30053962
commit 2633b1bd60
2 changed files with 8 additions and 7 deletions
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9
src/pulseaudio.cpp
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@ -699,9 +699,8 @@ static int outstream_open_pa(SoundIoPrivate *si, SoundIoOutStreamPrivate *os) {
ospa->buffer_attr.tlength = buffer_length; ospa->buffer_attr.tlength = buffer_length;
} }
pa_stream_flags_t flags = (pa_stream_flags_t)(PA_STREAM_START_CORKED|PA_STREAM_AUTO_TIMING_UPDATE); pa_stream_flags_t flags = (pa_stream_flags_t)(PA_STREAM_START_CORKED | PA_STREAM_AUTO_TIMING_UPDATE |
if (outstream->software_latency > 0.0) PA_STREAM_INTERPOLATE_TIMING);
flags = (pa_stream_flags_t) (flags | PA_STREAM_ADJUST_LATENCY);
int err = pa_stream_connect_playback(ospa->stream, int err = pa_stream_connect_playback(ospa->stream,
outstream->device->id, &ospa->buffer_attr, outstream->device->id, &ospa->buffer_attr,
@ -938,9 +937,7 @@ static int instream_start_pa(SoundIoPrivate *si, SoundIoInStreamPrivate *is) {
SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio; SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
pa_threaded_mainloop_lock(sipa->main_loop); pa_threaded_mainloop_lock(sipa->main_loop);
pa_stream_flags_t flags = PA_STREAM_AUTO_TIMING_UPDATE; pa_stream_flags_t flags = (pa_stream_flags_t)(PA_STREAM_AUTO_TIMING_UPDATE | PA_STREAM_INTERPOLATE_TIMING);
if (instream->software_latency > 0.0)
flags = (pa_stream_flags_t) (flags|PA_STREAM_ADJUST_LATENCY);
int err = pa_stream_connect_record(ispa->stream, int err = pa_stream_connect_record(ispa->stream,
instream->device->id, instream->device->id,

6
test/latency.cpp
View file

@ -16,7 +16,7 @@
#include <math.h> #include <math.h>
static int usage(char *exe) { static int usage(char *exe) {
fprintf(stderr, "Usage: %s [--backend dummy|alsa|pulseaudio|jack|coreaudio|wasapi]\n", exe); fprintf(stderr, "Usage: %s [--backend dummy|alsa|pulseaudio|jack|coreaudio|wasapi] [--latency seconds]\n", exe);
return 1; return 1;
} }
@ -129,6 +129,7 @@ static void underflow_callback(struct SoundIoOutStream *outstream) {
int main(int argc, char **argv) { int main(int argc, char **argv) {
char *exe = argv[0]; char *exe = argv[0];
enum SoundIoBackend backend = SoundIoBackendNone; enum SoundIoBackend backend = SoundIoBackendNone;
double software_latency = 0.0;
for (int i = 1; i < argc; i += 1) { for (int i = 1; i < argc; i += 1) {
char *arg = argv[i]; char *arg = argv[i];
if (arg[0] == '-' && arg[1] == '-') { if (arg[0] == '-' && arg[1] == '-') {
@ -152,6 +153,8 @@ int main(int argc, char **argv) {
fprintf(stderr, "Invalid backend: %s\n", argv[i]); fprintf(stderr, "Invalid backend: %s\n", argv[i]);
return 1; return 1;
} }
} else if (strcmp(arg, "--latency") == 0) {
software_latency = atof(argv[i]);
} else { } else {
return usage(exe); return usage(exe);
} }
@ -186,6 +189,7 @@ int main(int argc, char **argv) {
outstream->format = SoundIoFormatFloat32NE; outstream->format = SoundIoFormatFloat32NE;
outstream->write_callback = write_callback; outstream->write_callback = write_callback;
outstream->underflow_callback = underflow_callback; outstream->underflow_callback = underflow_callback;
outstream->software_latency = software_latency;
if (soundio_device_supports_format(device, SoundIoFormatFloat32NE)) { if (soundio_device_supports_format(device, SoundIoFormatFloat32NE)) {
outstream->format = SoundIoFormatFloat32NE; outstream->format = SoundIoFormatFloat32NE;