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https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-11 22:17:17 +03:00
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include "AudioChunk.h"
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std::vector<uint8_t> audioAESIV({0x72, 0xe0, 0x67, 0xfb, 0xdd, 0xcb, 0xcf, 0x77, 0xeb, 0xe8, 0xbc, 0x64, 0x3f, 0x63, 0x0d, 0x93});
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AudioChunk::AudioChunk(uint16_t seqId, std::vector<uint8_t> &audioKey, uint32_t startPosition, uint32_t predictedEndPosition)
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{
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this->crypto = std::make_unique<Crypto>();
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this->seqId = seqId;
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this->audioKey = audioKey;
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this->startPosition = startPosition;
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this->endPosition = predictedEndPosition;
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this->decryptedData = std::vector<uint8_t>();
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this->isHeaderFileSizeLoadedSemaphore = std::make_unique<WrappedSemaphore>(5);
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this->isLoadedSemaphore = std::make_unique<WrappedSemaphore>(5);
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}
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AudioChunk::~AudioChunk()
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{
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}
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void AudioChunk::appendData(const std::vector<uint8_t> &data)
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{
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//if (this == nullptr) return;
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this->decryptedData.insert(this->decryptedData.end(), data.begin(), data.end());
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}
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void AudioChunk::decrypt()
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{
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// calculate the IV for right position
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auto calculatedIV = this->getIVSum(startPosition / 16);
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crypto->aesCTRXcrypt(this->audioKey, calculatedIV, decryptedData);
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this->startPosition = this->endPosition - this->decryptedData.size();
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this->isLoaded = true;
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}
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// Basically just big num addition
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std::vector<uint8_t> AudioChunk::getIVSum(uint32_t n)
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{
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return bigNumAdd(audioAESIV, n);
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}
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