Channel volume levels reading in real-time #921
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Hi, |
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Replies: 3 comments 3 replies
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Yes, this is possible, add the following event: void audio_process_i2s(int16_t* outBuff, uint16_t validSamples, uint8_t bitsPerSample, uint8_t channels, bool *continueI2S){
// your vu meter code here
*continueI2S = true;
}In most cases bitsPerSample will be 16, then the samples are in int16_t range available in outBuff (numSamples = validSamples * channels). |
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Thx for quick reply! In the meantime I found audio.getVUlevel() function. Can I use it? |
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Yes, you can regularly query getVUlevel(). A uint16_t is returned where MSB is the left channel and LSB is the right channel. (Values between 0...127) |
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Thank you! |
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Done :) |
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Congratulations, good work! |
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Yes, you can regularly query getVUlevel(). A uint16_t is returned where MSB is the left channel and LSB is the right channel. (Values between 0...127)
uint16_t vu = audio.getVUlevel();
uint8_t l = vu >> 8;
uint8_t r = vu & 0x00FF