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https://github.com/alsa-project/alsa-utils
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alsabat: add buffer size and period size settings
Add buffer size and period size settings in alsabat. With -E and -B options, alsabat performs the test with specified buffer size and period size Signed-off-by: Zhang Vivian <vivian.zhang@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
vivian,zhang
Takashi Iwai
parent
569f2c116e
commit
9e196efda4
4 changed files with 94 additions and 32 deletions
47
bat/alsa.c
47
bat/alsa.c
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@ -74,6 +74,8 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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snd_pcm_format_t format;
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unsigned int buffer_time = 0;
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unsigned int period_time = 0;
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snd_pcm_uframes_t buffer_size = 0;
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snd_pcm_uframes_t period_size = 0;
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unsigned int rate;
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int err;
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const char *device_name = snd_pcm_name(sndpcm->handle);
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@ -145,9 +147,40 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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return -EINVAL;
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}
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if (bat->buffer_size > 0 && bat->period_size == 0)
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bat->period_size = bat->buffer_size / DIV_BUFFERTIME;
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if (bat->buffer_size > 0) {
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buffer_size = bat->buffer_size;
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period_size = bat->period_size;
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fprintf(bat->log, _("Set period size: %d buffer size: %d\n"),
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(int) period_size, (int) buffer_size);
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err = snd_pcm_hw_params_set_buffer_size_near(sndpcm->handle,
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params, &buffer_size);
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if (err < 0) {
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fprintf(bat->err, _("Set parameter to device error: "));
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fprintf(bat->err, _("buffer size: %d %s: %s(%d)\n"),
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(int) buffer_size,
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device_name, snd_strerror(err), err);
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return err;
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}
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err = snd_pcm_hw_params_set_period_size_near(sndpcm->handle,
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params, &period_size, 0);
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if (err < 0) {
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fprintf(bat->err, _("Set parameter to device error: "));
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fprintf(bat->err, _("period size: %d %s: %s(%d)\n"),
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(int) period_size,
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device_name, snd_strerror(err), err);
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return err;
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}
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} else {
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if (snd_pcm_hw_params_get_buffer_time_max(params,
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&buffer_time, 0) < 0) {
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fprintf(bat->err, _("Get parameter from device error: "));
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fprintf(bat->err,
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_("Get parameter from device error: "));
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fprintf(bat->err, _("buffer time: %d %s: %s(%d)\n"),
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buffer_time,
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device_name, snd_strerror(err), err);
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@ -160,8 +193,8 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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period_time = buffer_time / DIV_BUFFERTIME;
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/* Set buffer time and period time */
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err = snd_pcm_hw_params_set_buffer_time_near(sndpcm->handle, params,
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&buffer_time, 0);
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err = snd_pcm_hw_params_set_buffer_time_near(sndpcm->handle,
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params, &buffer_time, 0);
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if (err < 0) {
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fprintf(bat->err, _("Set parameter to device error: "));
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fprintf(bat->err, _("buffer time: %d %s: %s(%d)\n"),
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@ -170,8 +203,8 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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return err;
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}
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err = snd_pcm_hw_params_set_period_time_near(sndpcm->handle, params,
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&period_time, 0);
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err = snd_pcm_hw_params_set_period_time_near(sndpcm->handle,
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params, &period_time, 0);
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if (err < 0) {
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fprintf(bat->err, _("Set parameter to device error: "));
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fprintf(bat->err, _("period time: %d %s: %s(%d)\n"),
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@ -179,6 +212,7 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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device_name, snd_strerror(err), err);
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return err;
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}
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}
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/* Write the parameters to the driver */
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if (snd_pcm_hw_params(sndpcm->handle, params) < 0) {
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@ -214,6 +248,9 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
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return -EINVAL;
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}
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fprintf(bat->log, _("Get period size: %d buffer size: %d\n"),
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(int) sndpcm->period_size, (int) sndpcm->buffer_size);
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err = snd_pcm_format_physical_width(format);
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if (err < 0) {
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fprintf(bat->err, _("Invalid parameters: "));
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18
bat/bat.c
18
bat/bat.c
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@ -292,6 +292,8 @@ _("Usage: alsabat [-options]...\n"
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" -k parameter for frequency detecting threshold\n"
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" -F target frequency\n"
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" -p total number of periods to play/capture\n"
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" -B buffer size in frames\n"
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" -E period size in frames\n"
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" --log=# file that both stdout and strerr redirecting to\n"
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" --file=# file for playback\n"
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" --saveplay=# file that storing playback content, for debug\n"
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@ -324,6 +326,8 @@ static void set_defaults(struct bat *bat)
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bat->capture.device = NULL;
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bat->buf = NULL;
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bat->local = false;
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bat->buffer_size = 0;
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bat->period_size = 0;
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#ifdef HAVE_LIBTINYALSA
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bat->channels = 2;
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bat->playback.fct = &playback_tinyalsa;
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@ -342,8 +346,8 @@ static void set_defaults(struct bat *bat)
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static void parse_arguments(struct bat *bat, int argc, char *argv[])
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{
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int c, option_index;
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static const char short_options[] = "D:P:C:f:n:F:c:r:s:k:p:lth";
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int c, option_index, err;
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static const char short_options[] = "D:P:C:f:n:F:c:r:s:k:p:B:E:lth";
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static const struct option long_options[] = {
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{"help", 0, 0, 'h'},
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{"log", 1, 0, OPT_LOG},
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@ -414,6 +418,16 @@ static void parse_arguments(struct bat *bat, int argc, char *argv[])
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bat->periods_total = atoi(optarg);
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bat->period_is_limited = true;
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break;
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case 'B':
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err = atoi(optarg);
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bat->buffer_size = err >= MIN_BUFFERSIZE
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&& err < MAX_BUFFERSIZE ? err : 0;
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break;
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case 'E':
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err = atoi(optarg);
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bat->period_size = err >= MIN_PERIODSIZE
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&& err < MAX_PERIODSIZE ? err : 0;
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break;
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case 'h':
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default:
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usage(bat);
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@ -46,6 +46,12 @@
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#define DIV_BUFFERTIME 8
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/* margin to avoid sign inversion when generate sine wav */
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#define RANGE_FACTOR 0.95
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#define MAX_BUFFERSIZE 200000
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#define MIN_BUFFERSIZE 32
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#define MAX_PERIODSIZE 200000
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#define MIN_PERIODSIZE 32
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/* default period size for tinyalsa */
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#define TINYALSA_PERIODSIZE 1024
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#define EBATBASE 1000
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#define ENOPEAK (EBATBASE + 1)
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@ -152,6 +158,8 @@ struct bat {
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int frame_size; /* size of frame */
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int sample_size; /* size of sample */
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enum _bat_pcm_format format; /* PCM format */
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int buffer_size; /* buffer size in frames */
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int period_size; /* period size in frames */
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float sigma_k; /* threshold for peak detection */
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float target_freq[MAX_CHANNELS];
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@ -57,7 +57,10 @@ static int init_config(struct bat *bat, struct pcm_config *config)
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{
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config->channels = bat->channels;
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config->rate = bat->rate;
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config->period_size = 1024;
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if (bat->period_size > 0)
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config->period_size = bat->period_size;
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else
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config->period_size = TINYALSA_PERIODSIZE;
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config->period_count = 4;
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config->start_threshold = 0;
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config->stop_threshold = 0;
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