52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#pragma once
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#include <string>
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#include <fstream>
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#include <vector>
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#include <limits>
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#include <cstdint>
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#define WAV_INVALID_VAL 0xFFFFFFFFu
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// Structure for WAV chunk utilities
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struct WavChunk {
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std::string id;
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std::vector<uint8_t> data;
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};
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void write_wav_with_agbl_chunk(const std::string& output_path,
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std::vector<WavChunk>& chunks,
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uint32_t loop_end_value);
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class wav_file {
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public:
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wav_file(const std::string& path);
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~wav_file();
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void readData(size_t location, double *data, size_t len);
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private:
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std::ifstream ifs;
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std::streampos dataChunkPos;
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std::streampos dataChunkEndPos;
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size_t loadedChunk = WAV_INVALID_VAL;
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std::vector<double> loadBuffer;
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size_t loadBufferBlock = std::numeric_limits<size_t>::max();
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enum class format_type {
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u8, s16, s24, s32,
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f32, f64,
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} fmt;
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uint32_t fmt_size() const;
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public:
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uint32_t loopStart = 0; // samples
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uint32_t loopEnd = std::numeric_limits<uint32_t>::max(); // samples
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bool loopEnabled = false;
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double tuning = 0.0; // cents
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uint8_t midiKey = 60;
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uint32_t sampleRate;
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uint32_t numSamples = 0; // total number of samples in the file
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uint32_t agbPitch = 0; // optional: exact GBA pitch value from 'agbp' chunk (0 = not present)
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uint32_t agbLoopEnd = 0; // optional: exact loop end from 'agbl' chunk (0 = not present)
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std::vector<WavChunk> chunks; // raw chunks from the WAV file (for re-writing with modifications)
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};
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