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https://github.com/mudita/MuditaOS.git
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36b0228de2
* Fix of the issue that seeking in large MP3 file would cause OOM error when creating MP3 indexes. This caused OS crash when looping large MP3 file in Relaxation. * Minor cleanups.
51 lines
2.0 KiB
C++
51 lines
2.0 KiB
C++
// Copyright (c) 2017-2025, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/blob/master/LICENSE.md
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#pragma once
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#include "Decoder.hpp"
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#include <src/dr_wav.h>
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namespace audio
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{
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class DecoderWAV : public Decoder
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{
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public:
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explicit DecoderWAV(const std::string &filePath);
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~DecoderWAV() override;
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auto decode(std::uint32_t samplesToRead, std::int16_t *pcmData) -> std::int32_t override;
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auto setPosition(float pos) -> void override;
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auto rewind() -> void override;
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private:
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std::unique_ptr<drwav> wav;
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// Callback for when data needs to be read from the client.
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//
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// pUserData [in] The user data that was passed to drwav_open() and family.
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// pBufferOut [out] The output buffer.
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// bytesToRead [in] The number of bytes to read.
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//
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// Returns the number of bytes actually read.
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//
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// A return value of less than bytesToRead indicates the end of the stream. Do _not_ return from this callback
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// until either the entire bytesToRead is filled or you have reached the end of the stream.
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static auto drwavRead(void *pUserData, void *pBufferOut, std::size_t bytesToRead) -> std::size_t;
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// Callback for when data needs to be seeked.
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//
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// pUserData [in] The user data that was passed to drwav_init() and family.
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// offset [in] The number of bytes to move, relative to the origin. Will never be negative.
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// origin [in] The origin of the seek - the current position or the start of the stream.
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//
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// Returns whether the seek was successful.
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//
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// The offset will never be negative. Whether it is relative to the beginning or current position is
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// determined by the "origin" parameter which will be either drwav_seek_origin_start or
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// drwav_seek_origin_current.
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static auto drwavSeek(void *pUserData, int offset, drwav_seek_origin origin) -> drwav_bool32;
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};
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} // namespace audio
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