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alsa-time-test: Make constants for channels and rate

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Hard-coding constants on several places is bad coding practice.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
This commit is contained in:
David Henningsson 2014-09-10 14:52:01 +02:00
parent c9e8c0703f
commit f8aa823998
1 changed files with 9 additions and 6 deletions
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15
src/tests/alsa-time-test.c
View file

@ -10,6 +10,9 @@
#include <alsa/asoundlib.h> #include <alsa/asoundlib.h>
#define SAMPLE_RATE 44100
#define CHANNELS 2
static uint64_t timespec_us(const struct timespec *ts) { static uint64_t timespec_us(const struct timespec *ts) {
return return
ts->tv_sec * 1000000LLU + ts->tv_sec * 1000000LLU +
@ -23,9 +26,9 @@ int main(int argc, char *argv[]) {
snd_pcm_sw_params_t *swparams; snd_pcm_sw_params_t *swparams;
snd_pcm_status_t *status; snd_pcm_status_t *status;
snd_pcm_t *pcm; snd_pcm_t *pcm;
unsigned rate = 44100; unsigned rate = SAMPLE_RATE;
unsigned periods = 2; unsigned periods = 2;
snd_pcm_uframes_t boundary, buffer_size = 44100/10; /* 100s */ snd_pcm_uframes_t boundary, buffer_size = SAMPLE_RATE/10; /* 100s */
int dir = 1; int dir = 1;
int fillrate; int fillrate;
struct timespec start, last_timestamp = { 0, 0 }; struct timespec start, last_timestamp = { 0, 0 };
@ -58,7 +61,7 @@ int main(int argc, char *argv[]) {
cap = argc > 2 ? atoi(argv[2]) : 0; cap = argc > 2 ? atoi(argv[2]) : 0;
fillrate = argc > 3 ? atoi(argv[3]) : 1; fillrate = argc > 3 ? atoi(argv[3]) : 1;
samples = calloc(fillrate, 2*sizeof(uint16_t)); samples = calloc(fillrate, CHANNELS*sizeof(uint16_t));
assert(samples); assert(samples);
if (cap == 0) if (cap == 0)
@ -82,7 +85,7 @@ int main(int argc, char *argv[]) {
r = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rate, NULL); r = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rate, NULL);
assert(r == 0); assert(r == 0);
r = snd_pcm_hw_params_set_channels(pcm, hwparams, 2); r = snd_pcm_hw_params_set_channels(pcm, hwparams, CHANNELS);
assert(r == 0); assert(r == 0);
r = snd_pcm_hw_params_set_periods_integer(pcm, hwparams); r = snd_pcm_hw_params_set_periods_integer(pcm, hwparams);
@ -216,9 +219,9 @@ int main(int argc, char *argv[]) {
timestamp_us = timespec_us(&timestamp); timestamp_us = timespec_us(&timestamp);
if (cap == 0) if (cap == 0)
pos = (unsigned long long) ((sample_count - handled - delay) * 1000000LU / 44100); pos = (unsigned long long) ((sample_count - handled - delay) * 1000000LU / SAMPLE_RATE);
else else
pos = (unsigned long long) ((sample_count - handled + delay) * 1000000LU / 44100); pos = (unsigned long long) ((sample_count - handled + delay) * 1000000LU / SAMPLE_RATE);
if (count++ % 50 == 0) if (count++ % 50 == 0)
printf("Elapsed\tCPU\tALSA\tPos\tSamples\tavail\tdelay\trevents\thandled\tstate\n"); printf("Elapsed\tCPU\tALSA\tPos\tSamples\tavail\tdelay\trevents\thandled\tstate\n");