Buffered WAV file recording and playback #483
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Original branch is slightly polluted with unrelated fixes
Also omit alignment of user-generated audio buffer, doesn't seem to be needed
…nnym0u5e/Audio into feature/buffered-SD-for-PR
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Extremely exciting!!! |
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yay! |
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I tested this in two different situations today:
And both worked wonderfully. Neither of them could reliably play long wav files without intermittent glitches with the normal sd wav file player but with this it works a charm :) |
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Oh and heads up: The AudioBuffer class clashes with the AudioBuffer in the codecs library. https://github.com/FrankBoesing/Arduino-Teensy-Codec-lib/blob/master/audiobuffer.h |
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I'll let Paul adjudicate that one. I'm fairly sure he won't be pulling Frank's library, (a) because there's no PR, and (b) because it's GPL, not MIT-licensed. |
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As discussed on forum thread https://forum.pjrc.com/index.php?threads/yet-another-file-player-and-recorder.70963/ Seems to be pretty stable now, so I've added a couple of extra examples and submitted this PR.
Provides 1-, 2-, 4-, 6- and 8- channel playback and recording of WAV files from/to any filesystem, while not interfering with the sketch's ability to access files - all accesses are done via EventResponder so not from within the interrupt handler, which has a tendency to cause all sorts of mayhem.
With reasonably-sized buffers in heap or PSRAM the resilience to other system activities seems pretty good, and playback / recording of multiple files is possible.
Several examples are provided (maybe too many, or too complex?); documentation has been updated.