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// This file is part of the 64k demo project.
// Experimental MP3 sample decoding (non-STRIP_ALL only).
// Entire API unavailable when STRIP_ALL is defined (compile error on use).
#pragma once
#include <cstddef>
#include <cstdint>
#if !defined(STRIP_ALL)
// Opaque MP3 decoder. Create with mp3_open(), destroy with mp3_close().
// Output format: mono f32 PCM at 32 kHz (matches synth sample rate).
// |data| passed to mp3_open() must remain valid for the decoder's lifetime
// (embedded asset byte arrays satisfy this automatically).
struct Mp3Decoder;
// Open an in-memory MP3 blob for range decoding.
// Returns nullptr on error.
Mp3Decoder* mp3_open(const uint8_t* data, size_t size);
// Seek to |start_frame| and decode up to |num_frames| f32 mono samples into
// |out|. Returns the number of frames actually decoded (may be < num_frames at
// end of stream).
int mp3_decode_range(Mp3Decoder* dec, int start_frame, int num_frames,
float* out);
// Read up to |num_frames| f32 mono samples sequentially from current position.
// Returns frames decoded (< num_frames means end of stream).
int mp3_decode(Mp3Decoder* dec, int num_frames, float* out);
// Release the decoder.
void mp3_close(Mp3Decoder* dec);
#endif // !STRIP_ALL
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