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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.
96 lines
2.7 KiB
C++
96 lines
2.7 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 "Audio/AudioCommon.hpp"
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#include "Audio/Endpoint.hpp"
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#include "DecoderWorker.hpp"
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#include <memory>
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#include <vector>
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#include <tags_fetcher/TagsFetcher.hpp>
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namespace audio
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{
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namespace channel
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{
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inline constexpr auto monoSound = 1;
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inline constexpr auto stereoSound = 2;
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} // namespace channel
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class Decoder : public Source
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{
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public:
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static constexpr auto fileDeletedRetCode = -1;
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explicit Decoder(const std::string &path);
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virtual ~Decoder();
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virtual auto decode(std::uint32_t samplesToRead, std::int16_t *pcmData) -> std::int32_t = 0;
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// Range 0 - 1
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virtual auto setPosition(float pos) -> void = 0;
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// Rewind to first audio sample
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virtual auto rewind() -> void = 0;
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[[nodiscard]] auto getSampleRate() const noexcept -> std::uint32_t
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{
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return sampleRate;
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}
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[[nodiscard]] auto getChannelCount() const noexcept -> std::uint32_t
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{
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return channelCount;
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}
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[[nodiscard]] auto getCurrentPosition() const noexcept -> float
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{
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return position;
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}
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auto onDataReceive() -> void override;
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auto enableInput() -> void override;
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auto disableInput() -> void override;
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auto getSourceFormat() -> AudioFormat override;
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auto getSupportedFormats() -> std::vector<AudioFormat> override;
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auto getTraits() const -> Endpoint::Traits override;
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auto startDecodingWorker(const DecoderWorker::EndOfFileCallback &endOfFileCallback,
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const DecoderWorker::FileDeletedCallback &fileDeletedCallback) -> void;
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auto stopDecodingWorker() -> void;
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// Factory method
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static auto Create(const std::string &path) -> std::unique_ptr<Decoder>;
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protected:
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[[nodiscard]] virtual auto getBitWidth() -> unsigned int
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{
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return bitsPerSample;
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}
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virtual auto fetchTags() -> std::unique_ptr<tags::fetcher::Tags>;
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static constexpr Endpoint::Traits decoderCaps = {.usesDMA = false};
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std::uint32_t sampleRate = 0;
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std::uint32_t channelCount = 0;
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std::uint32_t bitsPerSample;
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float position = 0;
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std::FILE *fd = nullptr;
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std::unique_ptr<char[]> streamBuffer;
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std::uint32_t fileSize = 0;
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std::string filePath;
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std::unique_ptr<tags::fetcher::Tags> tags;
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bool isInitialized = false;
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// Decoding worker
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std::unique_ptr<DecoderWorker> audioWorker;
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};
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} // namespace audio
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