Change volume or loudness for ESP32 A2DP sink

[espgtxs]

I'm working on a A2DP sink application modified from A2DP example, but the defult volume is too loud, even I turn down the volume on iphone to minimum level.

How to config the volume in bluedroid of esp-idf ?

Change these lines are useless.

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1. btc_rc_vb.rc_volume = MAX_VOLUME; //btc_avrc.c line 161

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1. UINT8_TO_BE_STREAM(p_data, (AVRC_MAX_VOLUME & p_cmd->volume)); //avrc_bld_ct.c line 86

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[espgtxs]

i have changed filter bank. seems solve that problem

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1. #define MUL_16S_16S(_x, _y) ((_x)/16 * (_y))

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[espgtxs]

synthesis-8-generated.c line48


#define MUL_16S_16S(_x, _y) ((_x)/32 * (_y))