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https://github.com/alsa-project/alsa-lib.git
synced 2025-10-29 05:40:25 -04:00
Added verbose flag
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parent
77a9f73984
commit
2f1a2513dc
1 changed files with 12 additions and 2 deletions
14
test/pcm.c
14
test/pcm.c
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@ -19,6 +19,7 @@ unsigned int channels = 1; /* count of channels */
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unsigned int buffer_time = 500000; /* ring buffer length in us */
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unsigned int period_time = 100000; /* period time in us */
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double freq = 440; /* sinusoidal wave frequency in Hz */
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int verbose = 0; /* verbose flag */
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snd_pcm_sframes_t buffer_size;
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snd_pcm_sframes_t period_size;
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@ -148,7 +149,8 @@ static int set_swparams(snd_pcm_t *handle, snd_pcm_sw_params_t *swparams)
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printf("Unable to determine current swparams for playback: %s\n", snd_strerror(err));
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return err;
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}
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/* start the transfer when the buffer is almost full */
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/* start the transfer when the buffer is almost full: */
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/* (buffer_size / avail_min) * avail_min */
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err = snd_pcm_sw_params_set_start_threshold(handle, swparams, (buffer_size / period_size) * period_size);
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if (err < 0) {
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printf("Unable to set start threshold mode for playback: %s\n", snd_strerror(err));
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@ -698,6 +700,7 @@ static void help(void)
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"-b,--buffer ring buffer size in us\n"
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"-p,--period period size in us\n"
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"-m,--method transfer method\n"
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"-v,--verbose show the PCM setup parameters\n"
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"\n");
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printf("Recognized sample formats are:");
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for (k = 0; k < SND_PCM_FORMAT_LAST; ++(unsigned long) k) {
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@ -724,6 +727,7 @@ int main(int argc, char *argv[])
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{"buffer", 1, NULL, 'b'},
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{"period", 1, NULL, 'p'},
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{"method", 1, NULL, 'm'},
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{"verbose", 1, NULL, 'v'},
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{NULL, 0, NULL, 0},
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};
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snd_pcm_t *handle;
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@ -741,7 +745,7 @@ int main(int argc, char *argv[])
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morehelp = 0;
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while (1) {
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int c;
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if ((c = getopt_long(argc, argv, "hD:r:c:f:b:p:m:", long_option, NULL)) < 0)
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if ((c = getopt_long(argc, argv, "hD:r:c:f:b:p:m:v", long_option, NULL)) < 0)
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break;
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switch (c) {
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case 'h':
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@ -782,6 +786,9 @@ int main(int argc, char *argv[])
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if (transfer_methods[method].name == NULL)
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method = 0;
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break;
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case 'v':
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verbose = 1;
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break;
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}
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}
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@ -815,6 +822,9 @@ int main(int argc, char *argv[])
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exit(EXIT_FAILURE);
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}
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if (verbose > 0)
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snd_pcm_dump(handle, output);
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samples = malloc((period_size * channels * snd_pcm_format_width(format)) / 8);
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if (samples == NULL) {
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printf("No enough memory\n");
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