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alsa: fall back to 32 bit samples if 24 is not supported

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Some sound chips/drivers (e.g. Intel HDA) don't support 24 bit
samples, they want to get 32 bit instead.  Now that MPD's PCM library
supports 32 bit, add a 32 bit fallback when 24 bit is not supported.
This commit is contained in:
Max Kellermann 2009-03-02 16:41:38 +01:00
parent a5a15beac2
commit 72176db429
1 changed files with 8 additions and 0 deletions
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8
src/output/alsa_plugin.c
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@ -255,6 +255,14 @@ configure_hw:
}
err = snd_pcm_hw_params_set_format(ad->pcm, hwparams, bitformat);
if (err == -EINVAL && audio_format->bits == 24) {
/* fall back to 32 bit, let pcm_convert.c do the conversion */
err = snd_pcm_hw_params_set_format(ad->pcm, hwparams,
SND_PCM_FORMAT_S32);
if (err == 0)
audio_format->bits = 32;
}
if (err == -EINVAL && audio_format->bits != 16) {
/* fall back to 16 bit, let pcm_convert.c do the conversion */
err = snd_pcm_hw_params_set_format(ad->pcm, hwparams,