* helpful to verify the information reported by drivers.
*/
-#include "../include/asoundlib.h"
+#include <stdio.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+#include <locale.h>
#include <math.h>
+#include "../include/asoundlib.h"
-static char *device = "hw:0,0";
-
+static char *command;
+static char *pcm_name = "hw:0";
snd_output_t *output = NULL;
+static void usage(char *command)
+{
+ printf("Usage: %s [OPTION]... \n"
+ "\n"
+ "-h, --help help\n"
+ "-c, --capture capture tstamps \n"
+ "-d, --delay add delay \n"
+ "-D, --device=NAME select PCM by name \n"
+ "-p, --playback playback tstamps \n"
+ "-t, --ts_type=TYPE Default(0),link(1),link_estimated(2),synchronized(3) \n"
+ , command);
+}
+
+
long long timestamp2ns(snd_htimestamp_t t)
{
long long nsec;
return nsec1 - nsec2;
}
-void gettimestamp(snd_pcm_t *handle, snd_htimestamp_t *timestamp,
- snd_htimestamp_t *trigger_timestamp,
- snd_htimestamp_t *audio_timestamp,
- snd_pcm_uframes_t *avail, snd_pcm_sframes_t *delay)
+void _gettimestamp(snd_pcm_t *handle, snd_htimestamp_t *timestamp,
+ snd_htimestamp_t *trigger_timestamp,
+ snd_htimestamp_t *audio_timestamp,
+ snd_pcm_audio_tstamp_config_t *audio_tstamp_config,
+ snd_pcm_audio_tstamp_report_t *audio_tstamp_report,
+ snd_pcm_uframes_t *avail, snd_pcm_sframes_t *delay)
{
int err;
snd_pcm_status_t *status;
snd_pcm_status_alloca(&status);
+
+ snd_pcm_status_set_audio_htstamp_config(status, audio_tstamp_config);
+
if ((err = snd_pcm_status(handle, status)) < 0) {
printf("Stream status error: %s\n", snd_strerror(err));
exit(0);
snd_pcm_status_get_trigger_htstamp(status, trigger_timestamp);
snd_pcm_status_get_htstamp(status, timestamp);
snd_pcm_status_get_audio_htstamp(status, audio_timestamp);
+ snd_pcm_status_get_audio_htstamp_report(status, audio_tstamp_report);
*avail = snd_pcm_status_get_avail(status);
*delay = snd_pcm_status_get_delay(status);
}
-#define PERIOD 6000
+#define TIMESTAMP_FREQ 8 /* Hz */
+#define SAMPLE_FREQ 48000
+#define PERIOD (SAMPLE_FREQ/TIMESTAMP_FREQ)
#define PCM_LINK /* sync start for playback and capture */
#define TRACK_CAPTURE /* dump capture timing info */
#define TRACK_PLAYBACK /* dump playback timing info */
-#define TRACK_SAMPLE_COUNTS /* show difference between sample counters and audiotimestamps returned by driver */
+/*#define TRACK_SAMPLE_COUNTS */ /* show difference between sample counters and audiotimestamps returned by driver */
#define PLAYBACK_BUFFERS 4
-#define TSTAMP_TYPE SND_PCM_TSTAMP_TYPE_MONOTONIC
+#define TSTAMP_TYPE SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW
-int main(void)
+int main(int argc, char *argv[])
{
- int err;
- unsigned int i;
- snd_pcm_t *handle_p = NULL;
- snd_pcm_t *handle_c = NULL;
- snd_pcm_sframes_t frames;
+ int c;
+ int err;
+ unsigned int i;
+ snd_pcm_t *handle_p = NULL;
+ snd_pcm_t *handle_c = NULL;
+ snd_pcm_sframes_t frames;
snd_htimestamp_t tstamp_c, tstamp_p;
snd_htimestamp_t trigger_tstamp_c, trigger_tstamp_p;
snd_htimestamp_t audio_tstamp_c, audio_tstamp_p;
snd_pcm_sframes_t delay_p, delay_c;
snd_pcm_uframes_t avail_p, avail_c;
- if ((err = snd_pcm_open(&handle_p, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
- printf("Playback open error: %s\n", snd_strerror(err));
- goto _exit;
- }
- if ((err = snd_pcm_set_params(handle_p,
- SND_PCM_FORMAT_S16,
- SND_PCM_ACCESS_RW_INTERLEAVED,
- 2,
- 48000,
- 0,
- 500000)) < 0) { /* 0.5sec */
- printf("Playback open error: %s\n", snd_strerror(err));
- goto _exit;
+ snd_pcm_audio_tstamp_config_t audio_tstamp_config_p;
+ snd_pcm_audio_tstamp_config_t audio_tstamp_config_c;
+ snd_pcm_audio_tstamp_report_t audio_tstamp_report_p;
+ snd_pcm_audio_tstamp_report_t audio_tstamp_report_c;
+
+ int option_index;
+ static const char short_options[] = "hcpdD:t:";
+
+ static const struct option long_options[] = {
+ {"capture", 0, 0, 'c'},
+ {"delay", 0, 0, 'd'},
+ {"device", required_argument, 0, 'D'},
+ {"help", no_argument, 0, 'h'},
+ {"playback", 0, 0, 'p'},
+ {"ts_type", required_argument, 0, 't'},
+ {0, 0, 0, 0}
+ };
+
+ int do_delay = 0;
+ int do_playback = 0;
+ int do_capture = 0;
+ int type = 0;
+
+ while ((c = getopt_long(argc, argv, short_options, long_options, &option_index)) != -1) {
+ switch (c) {
+ case 'h':
+ usage(command);
+ return 0;
+ case 'p':
+ do_playback = 1;
+ break;
+ case 'c':
+ do_capture = 1;
+ break;
+ case 'd':
+ do_delay = 1;
+ break;
+ case 'D':
+ pcm_name = optarg;
+ break;
+ case 't':
+ type = atoi(optarg);
+ break;
+ }
}
- snd_pcm_hw_params_alloca(&hwparams_p);
- /* get the current hwparams */
- err = snd_pcm_hw_params_current(handle_p, hwparams_p);
- if (err < 0) {
- printf("Unable to determine current hwparams_p: %s\n", snd_strerror(err));
- goto _exit;
- }
- if (snd_pcm_hw_params_supports_audio_wallclock_ts(hwparams_p))
- printf("Playback relies on audio wallclock timestamps\n");
- else
- printf("Playback relies on audio sample counter timestamps\n");
-
- snd_pcm_sw_params_alloca(&swparams_p);
- /* get the current swparams */
- err = snd_pcm_sw_params_current(handle_p, swparams_p);
- if (err < 0) {
- printf("Unable to determine current swparams_p: %s\n", snd_strerror(err));
- goto _exit;
- }
+ memset(&audio_tstamp_config_p, 0, sizeof(snd_pcm_audio_tstamp_config_t));
+ memset(&audio_tstamp_config_c, 0, sizeof(snd_pcm_audio_tstamp_config_t));
+ memset(&audio_tstamp_report_p, 0, sizeof(snd_pcm_audio_tstamp_report_t));
+ memset(&audio_tstamp_report_c, 0, sizeof(snd_pcm_audio_tstamp_report_t));
- /* enable tstamp */
- err = snd_pcm_sw_params_set_tstamp_mode(handle_p, swparams_p, SND_PCM_TSTAMP_ENABLE);
- if (err < 0) {
- printf("Unable to set tstamp mode : %s\n", snd_strerror(err));
- goto _exit;
- }
+ if (do_playback) {
+ if ((err = snd_pcm_open(&handle_p, pcm_name, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
+ printf("Playback open error: %s\n", snd_strerror(err));
+ goto _exit;
+ }
- err = snd_pcm_sw_params_set_tstamp_type(handle_p, swparams_p, TSTAMP_TYPE);
- if (err < 0) {
- printf("Unable to set tstamp type : %s\n", snd_strerror(err));
- goto _exit;
- }
+ if ((err = snd_pcm_set_params(handle_p,
+ SND_PCM_FORMAT_S16,
+ SND_PCM_ACCESS_RW_INTERLEAVED,
+ 2,
+ SAMPLE_FREQ,
+ 0,
+ 4*1000000/TIMESTAMP_FREQ)) < 0) {
+ printf("Playback open error: %s\n", snd_strerror(err));
+ goto _exit;
+ }
- /* write the sw parameters */
- err = snd_pcm_sw_params(handle_p, swparams_p);
- if (err < 0) {
- printf("Unable to set swparams_p : %s\n", snd_strerror(err));
- goto _exit;
- }
+ snd_pcm_hw_params_alloca(&hwparams_p);
+/* get the current hwparams */
+ err = snd_pcm_hw_params_current(handle_p, hwparams_p);
+ if (err < 0) {
+ printf("Unable to determine current hwparams_p: %s\n", snd_strerror(err));
+ goto _exit;
+ }
- if ((err = snd_pcm_open(&handle_c, device, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) {
- printf("Capture open error: %s\n", snd_strerror(err));
- goto _exit;
- }
- if ((err = snd_pcm_set_params(handle_c,
- SND_PCM_FORMAT_S16,
- SND_PCM_ACCESS_RW_INTERLEAVED,
- 2,
- 48000,
- 0,
- 500000)) < 0) { /* 0.5sec */
- printf("Capture open error: %s\n", snd_strerror(err));
- goto _exit;
- }
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 0))
+ printf("Playback supports audio compat timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 1))
+ printf("Playback supports audio default timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 2))
+ printf("Playback supports audio link timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 3))
+ printf("Playback supports audio link absolute timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 4))
+ printf("Playback supports audio link estimated timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_p, 5))
+ printf("Playback supports audio link synchronized timestamps\n");
+
+ snd_pcm_sw_params_alloca(&swparams_p);
+ /* get the current swparams */
+ err = snd_pcm_sw_params_current(handle_p, swparams_p);
+ if (err < 0) {
+ printf("Unable to determine current swparams_p: %s\n", snd_strerror(err));
+ goto _exit;
+ }
- snd_pcm_hw_params_alloca(&hwparams_c);
- /* get the current hwparams */
- err = snd_pcm_hw_params_current(handle_c, hwparams_c);
- if (err < 0) {
- printf("Unable to determine current hwparams_c: %s\n", snd_strerror(err));
- goto _exit;
- }
- if (snd_pcm_hw_params_supports_audio_wallclock_ts(hwparams_c))
- printf("Capture relies on audio wallclock timestamps\n");
- else
- printf("Capture relies on audio sample counter timestamps\n");
-
- snd_pcm_sw_params_alloca(&swparams_c);
- /* get the current swparams */
- err = snd_pcm_sw_params_current(handle_c, swparams_c);
- if (err < 0) {
- printf("Unable to determine current swparams_c: %s\n", snd_strerror(err));
- goto _exit;
- }
+ /* enable tstamp */
+ err = snd_pcm_sw_params_set_tstamp_mode(handle_p, swparams_p, SND_PCM_TSTAMP_ENABLE);
+ if (err < 0) {
+ printf("Unable to set tstamp mode : %s\n", snd_strerror(err));
+ goto _exit;
+ }
- /* enable tstamp */
- err = snd_pcm_sw_params_set_tstamp_mode(handle_c, swparams_c, SND_PCM_TSTAMP_ENABLE);
- if (err < 0) {
- printf("Unable to set tstamp mode : %s\n", snd_strerror(err));
- goto _exit;
- }
+ err = snd_pcm_sw_params_set_tstamp_type(handle_p, swparams_p, TSTAMP_TYPE);
+ if (err < 0) {
+ printf("Unable to set tstamp type : %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ /* write the sw parameters */
+ err = snd_pcm_sw_params(handle_p, swparams_p);
+ if (err < 0) {
+ printf("Unable to set swparams_p : %s\n", snd_strerror(err));
+ goto _exit;
+ }
- err = snd_pcm_sw_params_set_tstamp_type(handle_c, swparams_c, TSTAMP_TYPE);
- if (err < 0) {
- printf("Unable to set tstamp type : %s\n", snd_strerror(err));
- goto _exit;
}
- /* write the sw parameters */
- err = snd_pcm_sw_params(handle_c, swparams_c);
- if (err < 0) {
- printf("Unable to set swparams_c : %s\n", snd_strerror(err));
- goto _exit;
+ if (do_capture) {
+
+ if ((err = snd_pcm_open(&handle_c, pcm_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) {
+ printf("Capture open error: %s\n", snd_strerror(err));
+ goto _exit;
+ }
+ if ((err = snd_pcm_set_params(handle_c,
+ SND_PCM_FORMAT_S16,
+ SND_PCM_ACCESS_RW_INTERLEAVED,
+ 2,
+ SAMPLE_FREQ,
+ 0,
+ 4*1000000/TIMESTAMP_FREQ)) < 0) {
+ printf("Capture open error: %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ snd_pcm_hw_params_alloca(&hwparams_c);
+ /* get the current hwparams */
+ err = snd_pcm_hw_params_current(handle_c, hwparams_c);
+ if (err < 0) {
+ printf("Unable to determine current hwparams_c: %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 0))
+ printf("Capture supports audio compat timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 1))
+ printf("Capture supports audio default timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 2))
+ printf("Capture supports audio link timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 3))
+ printf("Capture supports audio link absolute timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 4))
+ printf("Capture supports audio link estimated timestamps\n");
+ if (snd_pcm_hw_params_supports_audio_ts_type(hwparams_c, 5))
+ printf("Capture supports audio link synchronized timestamps\n");
+
+ snd_pcm_sw_params_alloca(&swparams_c);
+ /* get the current swparams */
+ err = snd_pcm_sw_params_current(handle_c, swparams_c);
+ if (err < 0) {
+ printf("Unable to determine current swparams_c: %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ /* enable tstamp */
+ err = snd_pcm_sw_params_set_tstamp_mode(handle_c, swparams_c, SND_PCM_TSTAMP_ENABLE);
+ if (err < 0) {
+ printf("Unable to set tstamp mode : %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ err = snd_pcm_sw_params_set_tstamp_type(handle_c, swparams_c, TSTAMP_TYPE);
+ if (err < 0) {
+ printf("Unable to set tstamp type : %s\n", snd_strerror(err));
+ goto _exit;
+ }
+
+ /* write the sw parameters */
+ err = snd_pcm_sw_params(handle_c, swparams_c);
+ if (err < 0) {
+ printf("Unable to set swparams_c : %s\n", snd_strerror(err));
+ goto _exit;
+ }
}
+ if (do_playback && do_capture) {
#ifdef PCM_LINK
- if ((err = snd_pcm_link(handle_c, handle_p)) < 0) {
- printf("Streams link error: %s\n", snd_strerror(err));
- exit(0);
- }
+ if ((err = snd_pcm_link(handle_c, handle_p)) < 0) {
+ printf("Streams link error: %s\n", snd_strerror(err));
+ exit(0);
+ }
#endif
-
- i = PLAYBACK_BUFFERS;
- while (i--) {
- frames = snd_pcm_writei(handle_p, buffer_p, PERIOD);
- if (frames < 0) {
- printf("snd_pcm_writei failed: %s\n", snd_strerror(frames));
- goto _exit;
- }
- frame_count_p += frames;
}
- if (PLAYBACK_BUFFERS != 4)
- snd_pcm_start(handle_p);
+ if (do_playback) {
+ i = PLAYBACK_BUFFERS;
+ while (i--) {
+ frames = snd_pcm_writei(handle_p, buffer_p, PERIOD);
+ if (frames < 0) {
+ printf("snd_pcm_writei failed: %s\n", snd_strerror(frames));
+ goto _exit;
+ }
+ frame_count_p += frames;
+ }
+
+ if (PLAYBACK_BUFFERS != 4)
+ snd_pcm_start(handle_p);
+ }
+ if (do_capture) {
#ifndef PCM_LINK
- /* need to start capture explicitly */
- snd_pcm_start(handle_c);
+ /* need to start capture explicitly */
+ snd_pcm_start(handle_c);
+#else
+ if (!do_playback)
+ /* need to start capture explicitly */
+ snd_pcm_start(handle_c);
#endif
+ }
- while (1) {
-
- frames = snd_pcm_wait(handle_c, -1);
- if (frames < 0) {
- printf("snd_pcm_wait failed: %s\n", snd_strerror(frames));
- goto _exit;
- }
-
- frames = snd_pcm_readi(handle_c, buffer_c, PERIOD);
- if (frames < 0) {
- printf("snd_pcm_readi failed: %s\n", snd_strerror(frames));
- goto _exit;
- }
- frame_count_c += frames;
+ while (1) {
- frames = snd_pcm_writei(handle_p, buffer_p, PERIOD);
- if (frames < 0) {
- printf("snd_pcm_writei failed: %s\n", snd_strerror(frames));
- goto _exit;
- }
+ if (do_capture) {
- frame_count_p += frames;
+ frames = snd_pcm_wait(handle_c, -1);
+ if (frames < 0) {
+ printf("snd_pcm_wait failed: %s\n", snd_strerror(frames));
+ goto _exit;
+ }
-#if defined(TRACK_PLAYBACK)
- gettimestamp(handle_p, &tstamp_p, &trigger_tstamp_p, &audio_tstamp_p, &avail_p, &delay_p);
+ frames = snd_pcm_readi(handle_c, buffer_c, PERIOD);
+ if (frames < 0) {
+ printf("snd_pcm_readi failed: %s\n", snd_strerror(frames));
+ goto _exit;
+ }
+ frame_count_c += frames;
+#if defined(TRACK_CAPTURE)
+ audio_tstamp_config_c.type_requested = type;
+ audio_tstamp_config_c.report_delay = do_delay;
+ _gettimestamp(handle_c, &tstamp_c, &trigger_tstamp_c,
+ &audio_tstamp_c, &audio_tstamp_config_c, &audio_tstamp_report_c,
+ &avail_c, &delay_c);
#if defined(TRACK_SAMPLE_COUNTS)
- curr_count_p = frame_count_p - delay_p; /* written minus queued */
+ curr_count_c = frame_count_c + delay_c; /* read plus queued */
- printf("playback: curr_count %lli driver count %lli, delta %lli\n",
- (long long)curr_count_p * 1000000000LL / 48000 ,
- timestamp2ns(audio_tstamp_p),
- (long long)curr_count_p * 1000000000LL / 48000 - timestamp2ns(audio_tstamp_p)
- );
+
+ printf("capture: curr_count %lli driver count %lli, delta %lli\n",
+ (long long)curr_count_c * 1000000000LL / SAMPLE_FREQ ,
+ timestamp2ns(audio_tstamp_c),
+ (long long)curr_count_c * 1000000000LL / SAMPLE_FREQ - timestamp2ns(audio_tstamp_c)
+ );
#endif
- printf("playback: systime: %lli nsec, audio time %lli nsec, \tsystime delta %lli\n",
- timediff(tstamp_p, trigger_tstamp_p),
- timestamp2ns(audio_tstamp_p),
- timediff(tstamp_p, trigger_tstamp_p) - timestamp2ns(audio_tstamp_p)
- );
+ printf("\t capture: systime: %lli nsec, audio time %lli nsec, \tsystime delta %lli\n",
+ timediff(tstamp_c, trigger_tstamp_c),
+ timestamp2ns(audio_tstamp_c),
+ timediff(tstamp_c, trigger_tstamp_c) - timestamp2ns(audio_tstamp_c)
+ );
#endif
+ }
-#if defined(TRACK_CAPTURE)
- gettimestamp(handle_c, &tstamp_c, &trigger_tstamp_c, &audio_tstamp_c, &avail_c, &delay_c);
+ if (do_playback) {
+ frames = snd_pcm_writei(handle_p, buffer_p, PERIOD);
+ if (frames < 0) {
+ printf("snd_pcm_writei failed: %s\n", snd_strerror(frames));
+ goto _exit;
+ }
-#if defined(TRACK_SAMPLE_COUNTS)
- curr_count_c = frame_count_c + delay_c; /* read plus queued */
+ frame_count_p += frames;
+
+#if defined(TRACK_PLAYBACK)
+ audio_tstamp_config_p.type_requested = type;
+ audio_tstamp_config_p.report_delay = do_delay;
+ _gettimestamp(handle_p, &tstamp_p, &trigger_tstamp_p,
+ &audio_tstamp_p, &audio_tstamp_config_p, &audio_tstamp_report_p,
+ &avail_p, &delay_p);
- printf("capture: curr_count %lli driver count %lli, delta %lli\n",
- (long long)curr_count_c * 1000000000LL / 48000 ,
- timestamp2ns(audio_tstamp_c),
- (long long)curr_count_c * 1000000000LL / 48000 - timestamp2ns(audio_tstamp_c)
- );
+#if defined(TRACK_SAMPLE_COUNTS)
+ curr_count_p = frame_count_p - delay_p; /* written minus queued */
+
+ printf("playback: curr_count %lli driver count %lli, delta %lli\n",
+ (long long)curr_count_p * 1000000000LL / SAMPLE_FREQ ,
+ timestamp2ns(audio_tstamp_p),
+ (long long)curr_count_p * 1000000000LL / SAMPLE_FREQ - timestamp2ns(audio_tstamp_p)
+ );
#endif
- printf("\t capture: systime: %lli nsec, audio time %lli nsec, \tsystime delta %lli\n",
- timediff(tstamp_c, trigger_tstamp_c),
- timestamp2ns(audio_tstamp_c),
- timediff(tstamp_c, trigger_tstamp_c) - timestamp2ns(audio_tstamp_c)
- );
+ printf("playback: systime: %lli nsec, audio time %lli nsec, \tsystime delta %lli\n",
+ timediff(tstamp_p, trigger_tstamp_p),
+ timestamp2ns(audio_tstamp_p),
+ timediff(tstamp_p, trigger_tstamp_p) - timestamp2ns(audio_tstamp_p)
+ );
#endif
+ }
+
- }
+ } /* while(1) */
_exit:
if (handle_p)
git://git.alsa-project.org / alsa-lib.git / commitdiff