mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-03 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

pacat: allow configuration of latency in msec

Browse source
This commit is contained in:
Lennart Poettering 2010-01-15 01:25:21 +01:00 • committed by Colin Guthrie
parent 544fa0b7db
commit fb55798a3e
2 changed files with 119 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

48
src/utils/pacat.c
View file

@ -45,6 +45,7 @@
#include <pulsecore/core-util.h>
#include <pulsecore/log.h>
#include <pulsecore/sndfile-util.h>
#include <pulsecore/core-util.h>
#define TIME_EVENT_USEC 50000
@ -86,6 +87,7 @@ static sf_count_t (*writef_function)(SNDFILE *_sndfile, const void *ptr, sf_coun
static pa_stream_flags_t flags = 0;
static size_t latency = 0, process_time = 0;
static int32_t latency_msec = 0, process_time_msec = 0;
static pa_bool_t raw = TRUE;
static int file_format = -1;
@ -434,19 +436,25 @@ static void context_state_callback(pa_context *c, void *userdata) {
buffer_attr.maxlength = (uint32_t) -1;
buffer_attr.prebuf = (uint32_t) -1;
if (latency > 0) {
buffer_attr.fragsize = buffer_attr.tlength = (uint32_t) latency;
buffer_attr.minreq = (uint32_t) process_time;
if (latency_msec > 0) {
buffer_attr.fragsize = buffer_attr.tlength = pa_usec_to_bytes(latency_msec * PA_USEC_PER_MSEC, &sample_spec);
flags |= PA_STREAM_ADJUST_LATENCY;
} else {
buffer_attr.tlength = (uint32_t) -1;
} else if (latency > 0) {
buffer_attr.fragsize = buffer_attr.tlength = (uint32_t) latency;
flags |= PA_STREAM_ADJUST_LATENCY;
} else
buffer_attr.fragsize = buffer_attr.tlength = (uint32_t) -1;
if (process_time_msec > 0) {
buffer_attr.minreq = pa_usec_to_bytes(process_time_msec * PA_USEC_PER_MSEC, &sample_spec);
} else if (process_time > 0)
buffer_attr.minreq = (uint32_t) process_time;
else
buffer_attr.minreq = (uint32_t) -1;
buffer_attr.fragsize = (uint32_t) -1;
}
if (mode == PLAYBACK) {
pa_cvolume cv;
if (pa_stream_connect_playback(stream, device, latency > 0 ? &buffer_attr : NULL, flags, volume_is_set ? pa_cvolume_set(&cv, sample_spec.channels, volume) : NULL, NULL) < 0) {
if (pa_stream_connect_playback(stream, device, &buffer_attr, flags, volume_is_set ? pa_cvolume_set(&cv, sample_spec.channels, volume) : NULL, NULL) < 0) {
pa_log(_("pa_stream_connect_playback() failed: %s"), pa_strerror(pa_context_errno(c)));
goto fail;
}
@ -634,9 +642,11 @@ static void help(const char *argv0) {
" --no-remap Map channels by index instead of name.\n"
" --latency=BYTES Request the specified latency in bytes.\n"
" --process-time=BYTES Request the specified process time per request in bytes.\n"
" --latency-msec=MSEC Request the specified latency in msec.\n"
" --process-time-msec=MSEC Request the specified process time per request in msec.\n"
" --property=PROPERTY=VALUE Set the specified property to the specified value.\n"
" --raw Record/play raw PCM data.\n"
" --file-format=FFORMAT Record/play formatted PCM data.\n"
" --file-format[=FFORMAT] Record/play formatted PCM data.\n"
" --list-file-formats List available file formats.\n")
, argv0);
}
@ -659,7 +669,9 @@ enum {
ARG_RAW,
ARG_PROPERTY,
ARG_FILE_FORMAT,
ARG_LIST_FILE_FORMATS
ARG_LIST_FILE_FORMATS,
ARG_LATENCY_MSEC,
ARG_PROCESS_TIME_MSEC
};
int main(int argc, char *argv[]) {
@ -695,6 +707,8 @@ int main(int argc, char *argv[]) {
{"raw", 0, NULL, ARG_RAW},
{"file-format", 2, NULL, ARG_FILE_FORMAT},
{"list-file-formats", 0, NULL, ARG_LIST_FILE_FORMATS},
{"latency-msec", 1, NULL, ARG_LATENCY_MSEC},
{"process-time-msec", 1, NULL, ARG_PROCESS_TIME_MSEC},
{NULL, 0, NULL, 0}
};
@ -854,6 +868,20 @@ int main(int argc, char *argv[]) {
}
break;
case ARG_LATENCY_MSEC:
if (((latency_msec = (int32_t) atoi(optarg))) <= 0) {
pa_log(_("Invalid latency specification '%s'"), optarg);
goto quit;
}
break;
case ARG_PROCESS_TIME_MSEC:
if (((process_time_msec = (int32_t) atoi(optarg))) <= 0) {
pa_log(_("Invalid process time specification '%s'"), optarg);
goto quit;
}
break;
case ARG_PROPERTY: {
char *t;