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latency test - Added -B and -E options

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This commit is contained in:
Jaroslav Kysela 2005-03-25 08:53:48 +00:00
parent e64cab565e
commit 1ac50201b0
1 changed files with 36 additions and 13 deletions
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49
test/latency.c
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@ -42,6 +42,8 @@ char *cdevice = "hw:0,0";
snd_pcm_format_t format = SND_PCM_FORMAT_S16_LE; snd_pcm_format_t format = SND_PCM_FORMAT_S16_LE;
int rate = 22050; int rate = 22050;
int channels = 2; int channels = 2;
int buffer_size = 0; /* auto */
int period_size = 0; /* auto */
int latency_min = 32; /* in frames / 2 */ int latency_min = 32; /* in frames / 2 */
int latency_max = 2048; /* in frames / 2 */ int latency_max = 2048; /* in frames / 2 */
int loop_sec = 30; /* seconds */ int loop_sec = 30; /* seconds */
@ -86,7 +88,7 @@ int setparams_stream(snd_pcm_t *handle,
printf("Rate %iHz not available for %s: %s\n", rate, id, snd_strerror(err)); printf("Rate %iHz not available for %s: %s\n", rate, id, snd_strerror(err));
return err; return err;
} }
if (rrate != rate) { if ((int)rrate != rate) {
printf("Rate doesn't match (requested %iHz, get %iHz)\n", rate, err); printf("Rate doesn't match (requested %iHz, get %iHz)\n", rate, err);
return -EINVAL; return -EINVAL;
} }
@ -109,7 +111,10 @@ int setparams_bufsize(snd_pcm_t *handle,
printf("Unable to set buffer size %li for %s: %s\n", bufsize * 2, id, snd_strerror(err)); printf("Unable to set buffer size %li for %s: %s\n", bufsize * 2, id, snd_strerror(err));
return err; return err;
} }
periodsize /= 2; if (period_size > 0)
periodsize = period_size;
else
periodsize /= 2;
err = snd_pcm_hw_params_set_period_size_near(handle, params, &periodsize, 0); err = snd_pcm_hw_params_set_period_size_near(handle, params, &periodsize, 0);
if (err < 0) { if (err < 0) {
printf("Unable to set period size %li for %s: %s\n", periodsize, id, snd_strerror(err)); printf("Unable to set period size %li for %s: %s\n", periodsize, id, snd_strerror(err));
@ -194,7 +199,7 @@ int setparams(snd_pcm_t *phandle, snd_pcm_t *chandle, int *bufsize)
snd_pcm_hw_params_t *pt_params, *ct_params; /* templates with rate, format and channels */ snd_pcm_hw_params_t *pt_params, *ct_params; /* templates with rate, format and channels */
snd_pcm_hw_params_t *p_params, *c_params; snd_pcm_hw_params_t *p_params, *c_params;
snd_pcm_sw_params_t *p_swparams, *c_swparams; snd_pcm_sw_params_t *p_swparams, *c_swparams;
snd_pcm_uframes_t size, p_size, c_size, p_psize, c_psize; snd_pcm_uframes_t p_size, c_size, p_psize, c_psize;
unsigned int p_time, c_time; unsigned int p_time, c_time;
snd_pcm_hw_params_alloca(&p_params); snd_pcm_hw_params_alloca(&p_params);
@ -212,12 +217,20 @@ int setparams(snd_pcm_t *phandle, snd_pcm_t *chandle, int *bufsize)
exit(0); exit(0);
} }
if (buffer_size > 0) {
*bufsize = buffer_size;
goto __set_it;
}
__again: __again:
if (buffer_size > 0)
return -1;
if (last_bufsize == *bufsize) if (last_bufsize == *bufsize)
*bufsize += 4; *bufsize += 4;
last_bufsize = *bufsize; last_bufsize = *bufsize;
if (*bufsize > latency_max) if (*bufsize > latency_max)
return -1; return -1;
__set_it:
if ((err = setparams_bufsize(phandle, p_params, pt_params, *bufsize, "playback")) < 0) { if ((err = setparams_bufsize(phandle, p_params, pt_params, *bufsize, "playback")) < 0) {
printf("Unable to set sw parameters for playback stream: %s\n", snd_strerror(err)); printf("Unable to set sw parameters for playback stream: %s\n", snd_strerror(err));
exit(0); exit(0);
@ -227,22 +240,20 @@ int setparams(snd_pcm_t *phandle, snd_pcm_t *chandle, int *bufsize)
exit(0); exit(0);
} }
snd_pcm_hw_params_get_period_size(p_params, &size, NULL); snd_pcm_hw_params_get_period_size(p_params, &p_psize, NULL);
if (size > *bufsize) if (p_psize > (unsigned int)*bufsize)
*bufsize = size; *bufsize = p_psize;
snd_pcm_hw_params_get_period_size(c_params, &size, NULL); snd_pcm_hw_params_get_period_size(c_params, &c_psize, NULL);
if (size > *bufsize) if (c_psize > (unsigned int)*bufsize)
*bufsize = size; *bufsize = c_psize;
snd_pcm_hw_params_get_period_time(p_params, &p_time, NULL); snd_pcm_hw_params_get_period_time(p_params, &p_time, NULL);
snd_pcm_hw_params_get_period_time(c_params, &c_time, NULL); snd_pcm_hw_params_get_period_time(c_params, &c_time, NULL);
if (p_time != c_time) if (p_time != c_time)
goto __again; goto __again;
snd_pcm_hw_params_get_period_size(p_params, &p_psize, NULL);
snd_pcm_hw_params_get_buffer_size(p_params, &p_size); snd_pcm_hw_params_get_buffer_size(p_params, &p_size);
if (p_psize * 2 < p_size) if (p_psize * 2 < p_size)
goto __again; goto __again;
snd_pcm_hw_params_get_period_size(c_params, &c_psize, NULL);
snd_pcm_hw_params_get_buffer_size(c_params, &c_size); snd_pcm_hw_params_get_buffer_size(c_params, &c_size);
if (c_psize * 2 < c_size) if (c_psize * 2 < c_size)
goto __again; goto __again;
@ -352,7 +363,7 @@ long readbuf(snd_pcm_t *handle, char *buf, long len, size_t *frames, size_t *max
} while (r == -EAGAIN); } while (r == -EAGAIN);
if (r > 0) { if (r > 0) {
*frames += r; *frames += r;
if (*max < r) if ((long)*max < r)
*max = r; *max = r;
} }
// printf("read = %li\n", r); // printf("read = %li\n", r);
@ -364,7 +375,7 @@ long readbuf(snd_pcm_t *handle, char *buf, long len, size_t *frames, size_t *max
buf += r * frame_bytes; buf += r * frame_bytes;
len -= r; len -= r;
*frames += r; *frames += r;
if (*max < r) if ((long)*max < r)
*max = r; *max = r;
} }
// printf("r = %li, len = %li\n", r, len); // printf("r = %li, len = %li\n", r, len);
@ -450,6 +461,8 @@ void help(void)
"-f,--format sample format\n" "-f,--format sample format\n"
"-c,--channels channels\n" "-c,--channels channels\n"
"-r,--rate rate\n" "-r,--rate rate\n"
"-B,--buffer buffer size in frames\n"
"-E,--period period size in frames\n"
"-s,--seconds duration of test in seconds\n" "-s,--seconds duration of test in seconds\n"
"-b,--block block mode\n" "-b,--block block mode\n"
"-t,--time maximal tick time in us\n" "-t,--time maximal tick time in us\n"
@ -485,6 +498,8 @@ int main(int argc, char *argv[])
{"format", 1, NULL, 'f'}, {"format", 1, NULL, 'f'},
{"channels", 1, NULL, 'c'}, {"channels", 1, NULL, 'c'},
{"rate", 1, NULL, 'r'}, {"rate", 1, NULL, 'r'},
{"buffer", 1, NULL, 'B'},
{"period", 1, NULL, 'E'},
{"seconds", 1, NULL, 's'}, {"seconds", 1, NULL, 's'},
{"block", 0, NULL, 'b'}, {"block", 0, NULL, 'b'},
{"time", 1, NULL, 't'}, {"time", 1, NULL, 't'},
@ -540,6 +555,14 @@ int main(int argc, char *argv[])
err = atoi(optarg); err = atoi(optarg);
rate = err >= 4000 && err < 200000 ? err : 44100; rate = err >= 4000 && err < 200000 ? err : 44100;
break; break;
case 'B':
err = atoi(optarg);
buffer_size = err >= 32 && err < 200000 ? err : 0;
break;
case 'E':
err = atoi(optarg);
period_size = err >= 32 && err < 200000 ? err : 0;
break;
case 's': case 's':
err = atoi(optarg); err = atoi(optarg);
loop_sec = err >= 1 && err <= 100000 ? err : 30; loop_sec = err >= 1 && err <= 100000 ? err : 30;