Seeking position in an MP3 file? #1899
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Problem DescriptionApologies if the information is available somewhere here, but I cannot find anything... I was looking at the player-sd-audiokit example and the underlying AudioSourcesSTD.h and I am still not sure: is it possible to seek a specific position in an MP3 file or to rewind/fast forward the file a specific number of seconds? Device DescriptionESP32 Audio Kit v.2.2 A436 Sketchplayer-sd-audiokit.inoOther Steps to ReproduceNo response What is your development environmentNo response I have checked existing issues, discussions and online documentation
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Replies: 2 comments 4 replies
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Please follow the instructions given in the Readme and don't file your questions as errors! The first question is not really related to my framework: of cause you can change the actual file position with the corresponding file api using seek() and position(). For the second question I refer to my answer above: you just need to translate the seconds to bytes. You can determine the bytesPerSecond() with the help of the MeasuringStream. Please note that with the AudioPlayer this class can't be used in a chain, so you need to update the processed bytes (with setProcessedBytes()) after calling copy(); ps. there is no such thing as a AudioSourcesSTD |
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Hello @pschatzmann, Is possible apply a specific bytes to be copy in player using player.copy(bytes_to_be_copy) then bytes_to_be_copy wold be bytes about 10%, 20%, 30% etc, the total of playing file, and so it can do a fast avance. |
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I answer to me. It's not possible. Could you implement in player object a fast forward, rewind? |
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Apologies for the misposting! I will look into the methods you describe. |
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I am not sure where you have the AudioSourcesSTD.h from ? The AudioPlayer class has a getter method which provides the actual Stream. For file based implementations this is the actual file! When using AudioSourcesSD the file class is File, so you can do Use Google to find the Arduino File API... |
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Ok. I have the last version of the AudioTools library. I try it that you say. |
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Please follow the instructions given in the Readme and don't file your questions as errors!
The first question is not really related to my framework: of cause you can change the actual file position with the corresponding file api using seek() and position().
For the second question I refer to my answer above: you just need to translate the seconds to bytes. You can determine the bytesPerSecond() with the help of the MeasuringStream. Please note that with the AudioPlayer this class can't be used in a chain, so you need to update the processed bytes (with setProcessedBytes()) after calling copy();
ps. there is no such thing as a AudioSourcesSTD