65 lines
No EOL
2.3 KiB
C++
65 lines
No EOL
2.3 KiB
C++
#pragma once
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#include "StereoBuffer.h"
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#include "Defaults.h"
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#include <sndfile.hh>
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#include <filesystem>
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#include <optional>
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#include <string_view>
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#include <absl/container/flat_hash_map.h>
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#include <map>
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namespace sfz
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{
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class FilePool
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{
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public:
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FilePool() = default;
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void setRootDirectory(const std::filesystem::path& directory)
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{
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rootDirectory = directory;
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}
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struct FileInformation
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{
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uint32_t end { Default::sampleEndRange.getEnd() };
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uint32_t loopBegin { Default::loopRange.getStart() };
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uint32_t loopEnd { Default::loopRange.getEnd() };
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std::shared_ptr<StereoBuffer<float>> preloadedData;
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};
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std::optional<FileInformation> getFileInformation(std::string_view filename)
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{
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std::filesystem::path file { rootDirectory / filename };
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if (!std::filesystem::exists(file))
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return {};
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SndfileHandle sndFile ( reinterpret_cast<const char*>(file.c_str()) );
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FileInformation returnedValue;
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returnedValue.end = static_cast<uint32_t>(sndFile.frames());
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SF_INSTRUMENT instrumentInfo;
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sndFile.command(SFC_GET_INSTRUMENT, &instrumentInfo, sizeof(instrumentInfo));
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if (instrumentInfo.loop_count == 1)
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{
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returnedValue.loopBegin = instrumentInfo.loops[0].start;
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returnedValue.loopEnd = instrumentInfo.loops[0].end;
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}
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auto preloadedSize = std::min(returnedValue.end, static_cast<uint32_t>(config::preloadSize));
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returnedValue.preloadedData = std::make_shared<StereoBuffer<float>>(preloadedSize);
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sndFile.readf(tempReadBuffer.data(), preloadedSize);
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returnedValue.preloadedData->readInterleaved<SIMDConfig::supported>(tempReadBuffer.data(), preloadedSize);
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preloadedData[filename] = returnedValue.preloadedData;
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// char buffer [2048] ;
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// sndFile.command(SFC_GET_LOG_INFO, buffer, sizeof(buffer)) ;
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// DBG(buffer);
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return returnedValue;
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}
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size_t getNumPreloadedSamples() { return preloadedData.size(); }
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private:
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std::filesystem::path rootDirectory;
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Buffer<float> tempReadBuffer { config::preloadSize * 2 };
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// std::map<std::string_view, std::shared_ptr<StereoBuffer<float>>> preloadedData;
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absl::flat_hash_map<std::string_view, std::shared_ptr<StereoBuffer<float>>> preloadedData;
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};
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static inline FilePool filePool;
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} |