bool decompress(Codec& codec)
{
cout << "Decompressing with " << codec.getName() << " (multiple times)..." << endl;
decompressedBuffer = new char[originalSize];
Timer timer;
const int repeatCount = 50;
double decompressionTime = FLT_MAX;
for (int i = 0; i < repeatCount; ++i)
{
timer.reset();
bool ok = codec.decompress();
double currentDecompressionTime = timer.query();
if (!ok)
{
cout << "ERROR: Could not decompress" << endl;
return false;
}
decompressionTime = min(decompressionTime, currentDecompressionTime);
}
double mbps = static_cast<double>(originalSize) / MEGABYTE / decompressionTime;
cout << "Decompression speed: " << mbps << " MB/s" << endl;
return true;
}
bool compress(Codec& codec)
{
cout << "Compressing with " << codec.getName() << "..." << endl;
compressedBufferSize = codec.getMaxCompressedSize();
compressedBuffer = new char[compressedBufferSize];
Timer timer;
bool ok = codec.compress();
double compressionTime = timer.query();
if (!ok)
{
cout << "ERROR: Could not compress" << endl;
return false;
}
double mbps = static_cast<double>(originalSize) / MEGABYTE / compressionTime;
double compressionRatio = static_cast<double>(compressedSize) / static_cast<double>(originalSize) * 100.0;
cout << "Compressed in " << compressionTime << " s, " << mbps << " MB/s" << endl;
cout << "Compressed size: " << static_cast<double>(compressedSize) / MEGABYTE << " MB (" << compressedSize / KILOBYTE << " KB)" << endl;
cout << "Compression ratio: " << compressionRatio << "%" << endl;
return true;
}
