Dooho Yi
c839359313
+ i tried so eagerly to achieve somewhat stability. yet, to be frustrated. + nothing gained. wanna go back. + but just wanna leave some trace.
66 lines
2.7 KiB
C++
66 lines
2.7 KiB
C++
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef play_sd_wav_h_
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#define play_sd_wav_h_
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#include "Arduino.h"
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#include "AudioStream.h"
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#include "SdFat.h"
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class AudioPlaySdWav : public AudioStream
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{
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public:
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AudioPlaySdWav(void) : AudioStream(0, NULL), block_left(NULL), block_right(NULL) { begin(); }
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void begin(void);
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bool play(const char *filename);
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void stop(void);
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bool isPlaying(void);
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uint32_t positionMillis(void);
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uint32_t lengthMillis(void);
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virtual void update(void);
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private:
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FsFile wavfile;
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bool consume(uint32_t size);
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bool parse_format(void);
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uint32_t header[10]; // temporary storage of wav header data
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uint32_t data_length; // number of bytes remaining in current section
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uint32_t total_length; // number of audio data bytes in file
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uint32_t bytes2millis;
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audio_block_t *block_left;
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audio_block_t *block_right;
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uint16_t block_offset; // how much data is in block_left & block_right
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uint8_t buffer[512]; // buffer one block of data
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uint16_t buffer_offset; // where we're at consuming "buffer"
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uint16_t buffer_length; // how much data is in "buffer" (512 until last read)
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uint8_t header_offset; // number of bytes in header[]
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uint8_t state;
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uint8_t state_play;
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uint8_t leftover_bytes;
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};
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#endif
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