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Work around presumable ALSA bug that treats the dir argument to

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snd_pcm_hw_params_set_periods_near() actually as > or < instead of >= and <=.
This commit is contained in:
Lennart Poettering 2008-09-09 00:04:50 +03:00
parent c7a77657ff
commit f4c2f00f78
1 changed files with 11 additions and 4 deletions
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7
src/modules/alsa-util.c
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@ -370,6 +370,12 @@ int pa_alsa_set_hw_params(
goto finish; goto finish;
if (_periods > 0) { if (_periods > 0) {
/* First we pass 0 as direction to get exactly what we asked
* for. That this is necessary is presumably a bug in ALSA */
dir = 0;
if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
dir = 1; dir = 1;
if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) { if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
dir = -1; dir = -1;
@ -377,6 +383,7 @@ int pa_alsa_set_hw_params(
goto finish; goto finish;
} }
} }
}
if (_period_size > 0) if (_period_size > 0)
if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0) if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)