1SND_PCM_HW_CONSTRAIN(9) PCM API SND_PCM_HW_CONSTRAIN(9)
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6 snd_pcm_hw_constraint_msbits - add a hw constraint msbits rule
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9 int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime * runtime,
10 unsigned int cond, unsigned int width,
11 unsigned int msbits);
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14 runtime
15 PCM runtime instance
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17 cond
18 condition bits
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20 width
21 sample bits width
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23 msbits
24 msbits width
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27 This constraint will set the number of most significant bits (msbits)
28 if a sample format with the specified width has been select. If width
29 is set to 0 the msbits will be set for any sample format with a width
30 larger than the specified msbits.
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33 Zero if successful, or a negative error code on failure.
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36Kernel Hackers Manual 2.6. June 2019 SND_PCM_HW_CONSTRAIN(9)