![]() ![]() Interleaved readsīy careful choice of buffer sizes and pre-load amount, the AudioPlayWav objects attempt to ensure that only one SD card read is attempted on each audio engine update. However, the AudioPlayWav object is intended to work with other block sizes and samples rates - please raise an issue if you find a combination that doesn't work, and you think that it should. 3: insufficient memory to allocate buffer etc.įor the purposes of this documentation, it is assumed that the audio engine is compiled without changing the default audio block size (128 samples) or sample rate (44.1kHz), resulting in an update cycle of approximately 2.9ms.If an internal error occurs, for example during a call to play() or within the audio update loop interrupt, this function will return the most recent error code. The loops can be stopped by using count = 0 or calling loop(false) unsigned int loopCount(void) When lastSample is reached, it rewinds back to firstSample. If set to false later, the looping stops and the file plays to the end. If true, it repeats the whole file, endless. When not playing, the return from this function is undefined. Return the total length of the current sound clip,in milliseconds. While playing, return the current time offset, in milliseconds. Return true (non-zero) if paused, or false (zero) when playing or stopped. Return true (non-zero) if stopped, or false (zero) when playing or paused. Return true (non-zero) if playing, or false (zero) when stopped or paused. ![]() The file is closed and buffer memory returned to the heap. Stops playing, whether or not it is paused. Starts a paused object if the parameter is true, or pauses it if false. If autorewind is true, it does not stop and close the file - instead it sets the state to paused and sets the first sample as new position. Buffer memory is allocated when this function is called, with the amount dependent on the number of audio channels provided in the file. Plays the File object or named file setting the optional paused parameter to true allocates and pre-loads the buffer, but does not start playing. The object placed on the design area shows 8 outputs, of which 1, 2, 4, 6 or 8 will output audio data, depending on the number of channels provided in the file n channel 16 bit signed, unsigned or 16 bit big-endian signed RAWĪn updated index.html file is supplied which documents the key API calls provided by AudioPlayWav.n channel 8 bit signed, unsigned or u-law RAW.n channel u-law *.aifc (Apple, non ccitt).interleaved reads / writes: only one file access on each audio-cycle. ![]()
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