diff options
Diffstat (limited to 'bat/bat.c')
| -rw-r--r-- | bat/bat.c | 36 |
1 files changed, 36 insertions, 0 deletions
@@ -40,6 +40,7 @@ #ifdef HAVE_LIBFFTW3 #include "analyze.h" #endif +#include "latencytest.h" static int get_duration(struct bat *bat) { @@ -299,6 +300,7 @@ _("Usage: alsabat [-options]...\n" " --saveplay=# file that storing playback content, for debug\n" " --local internal loop, set to bypass pcm hardware devices\n" " --standalone standalone mode, to bypass analysis\n" +" --roundtriplatency round trip latency mode\n" )); fprintf(bat->log, _("Recognized sample formats are: ")); fprintf(bat->log, _("U8 S16_LE S24_3LE S32_LE\n")); @@ -328,6 +330,7 @@ static void set_defaults(struct bat *bat) bat->local = false; bat->buffer_size = 0; bat->period_size = 0; + bat->roundtriplatency = false; #ifdef HAVE_LIBTINYALSA bat->channels = 2; bat->playback.fct = &playback_tinyalsa; @@ -355,6 +358,7 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[]) {"saveplay", 1, 0, OPT_SAVEPLAY}, {"local", 0, 0, OPT_LOCAL}, {"standalone", 0, 0, OPT_STANDALONE}, + {"roundtriplatency", 0, 0, OPT_ROUNDTRIPLATENCY}, {0, 0, 0, 0} }; @@ -376,6 +380,9 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[]) case OPT_STANDALONE: bat->standalone = true; break; + case OPT_ROUNDTRIPLATENCY: + bat->roundtriplatency = true; + break; case 'D': if (bat->playback.device == NULL) bat->playback.device = optarg; @@ -616,6 +623,35 @@ int main(int argc, char *argv[]) if (err < 0) goto out; + /* round trip latency test thread */ + if (bat.roundtriplatency) { + while (1) { + fprintf(bat.log, + _("\nStart round trip latency\n")); + roundtrip_latency_init(&bat); + test_loopback(&bat); + + if (bat.latency.xrun_error == false) + break; + else { + /* Xrun error in playback or capture, + increase period size and try again */ + bat.period_size += bat.rate / 1000; + bat.buffer_size = + bat.period_size * DIV_BUFFERSIZE; + + /* terminate the test if period_size is + large enough */ + if (bat.period_size > bat.rate * 0.2) + break; + } + + /* Waiting 500ms and start the next round */ + usleep(CAPTURE_DELAY * 1000); + } + goto out; + } + /* single line playback thread: playback only, no capture */ if (bat.playback.mode == MODE_SINGLE) { test_playback(&bat); |