40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
#ifndef MP3_DECODER_TASK_H
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#define MP3_DECODER_TASK_H
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#include <cstdint>
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#include "config.h"
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#include "pcm_audio_interface.h"
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#include "sd_reader_task.h"
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#include "gpio_rp2040.h"
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#include "task.h"
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#include "mad.h"
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class mp3_decoder_task : public task
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{
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public:
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mp3_decoder_task(pcm_audio_interface & pcm_if, sd_reader_task & sd);
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void run() override;
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void reset();
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uint16_t get_position(unsigned long fsize,int max_pos);
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uint32_t get_total_seconds();
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private:
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static enum mad_flow input (void *data, struct mad_stream *stream);
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static enum mad_flow header(void *data, struct mad_header const *);
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static enum mad_flow output(void *data, mad_header const *header, mad_pcm *pcm);
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static enum mad_flow error (void *data, mad_stream *stream, mad_frame *frame);
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static int16_t scale (mad_fixed_t sample);
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pcm_audio_interface & _pcm_if;
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sd_reader_task & _sd_reader;
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mad_decoder _decoder{};
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gpio_rp2040_pin _led;
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uint8_t _mp3_buf[MP3_BUF_SIZE]{};
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uint32_t _pcm_rate;
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mad_timer_t _timer;
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unsigned long _bitrate;
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unsigned long _total_time;
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};
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#endif // MP3_DECODER_TASK_H
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