ErosQ (both): avoid clipping due to DC offset bandaid
Set the maximum volume on both hosted and native ports to -2 dB. Verified behavior here on native and by borkitall on irc for hosted. Change-Id: I3aebc2bb4b9294a4137a33694c83139c0d76099a
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@ -23,10 +23,16 @@
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#ifndef _EROS_QN_CODEC_H
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#define _EROS_QN_CODEC_H
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/*
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* Note: Maximum volume is set one step below unity in order to
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* avoid overflowing pcm samples due to our DC Offset.
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*
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* The DAC's output is hot enough this should not be an issue.
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*/
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#define PCM5102A_VOLUME_MIN -740
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#define PCM5102A_VOLUME_MAX 0
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#define PCM5102A_VOLUME_MAX -20
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/* a small DC offset appears to prevent play/pause clicking */
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/* a small DC offset prevents play/pause clicking due to the DAC auto-muting */
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#define PCM_DC_OFFSET_VALUE -1
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AUDIOHW_SETTING(VOLUME, "dB", 0, 2, PCM5102A_VOLUME_MIN/10, PCM5102A_VOLUME_MAX/10, 0)
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@ -3,9 +3,16 @@
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#define AUDIOHW_CAPS (LINEOUT_CAP)
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/* a small DC offset prevents play/pause clicking due to the DAC auto-muting */
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#define PCM_DC_OFFSET_VALUE -1
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AUDIOHW_SETTING(VOLUME, "dB", 0, 2, -74, 0, -40)
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/*
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* Note: Maximum volume is set one step below unity in order to
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* avoid overflowing pcm samples due to our DC Offset.
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*
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* The DAC's output is hot enough this should not be an issue.
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*/
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AUDIOHW_SETTING(VOLUME, "dB", 0, 2, -74, -2, -40)
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//#define AUDIOHW_NEEDS_INITIAL_UNMUTE
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