1031 lines
35 KiB
C++
1031 lines
35 KiB
C++
/*
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* SampleIO.cpp
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* ------------
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* Purpose: Central code for reading and writing samples. Create your SampleIO object and have a go at the ReadSample and WriteSample functions!
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* Notes : Not all combinations of possible sample format combinations are implemented, especially for WriteSample.
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* Using the existing generic functions, it should be quite easy to extend the code, though.
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* Authors: Olivier Lapicque
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* OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "Loaders.h"
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#include "SampleIO.h"
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#include "openmpt/soundbase/SampleDecode.hpp"
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#include "SampleCopy.h"
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#include "SampleNormalize.h"
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#include "ModSampleCopy.h"
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#include "ITCompression.h"
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#ifndef MODPLUG_NO_FILESAVE
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#include "../common/mptFileIO.h"
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#include "mpt/io/base.hpp"
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#include "mpt/io/io.hpp"
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#include "mpt/io/io_stdstream.hpp"
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#include "mpt/io_write/buffer.hpp"
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#endif
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#include "BitReader.h"
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OPENMPT_NAMESPACE_BEGIN
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// Read a sample from memory
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size_t SampleIO::ReadSample(ModSample &sample, FileReader &file) const
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{
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if(!file.IsValid())
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{
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return 0;
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}
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LimitMax(sample.nLength, MAX_SAMPLE_LENGTH);
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FileReader::off_t bytesRead = 0; // Amount of memory that has been read from file
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FileReader::off_t filePosition = file.GetPosition();
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const std::byte * sourceBuf = nullptr;
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FileReader::PinnedView restrictedSampleDataView;
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FileReader::off_t fileSize = 0;
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if(UsesFileReaderForDecoding())
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{
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sourceBuf = nullptr;
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fileSize = file.BytesLeft();
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} else if(!IsVariableLengthEncoded())
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{
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restrictedSampleDataView = file.GetPinnedView(CalculateEncodedSize(sample.nLength));
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sourceBuf = restrictedSampleDataView.data();
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fileSize = restrictedSampleDataView.size();
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if(sourceBuf == nullptr)
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return 0;
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} else
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{
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MPT_ASSERT_NOTREACHED();
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}
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if(!IsVariableLengthEncoded() && sample.nLength > 0x40000)
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{
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// Limit sample length to available bytes in file to avoid excessive memory allocation.
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// However, for ProTracker MODs we need to support samples exceeding the end of file
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// (see the comment about MOD.shorttune2 in Load_mod.cpp), so as a semi-arbitrary threshold,
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// we do not apply this limit to samples shorter than 256K.
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size_t maxLength = fileSize - std::min(GetEncodedHeaderSize(), fileSize);
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uint8 bps = GetEncodedBitsPerSample();
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if(bps % 8u != 0)
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{
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MPT_ASSERT(GetEncoding() == ADPCM && bps == 4);
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if(Util::MaxValueOfType(maxLength) / 2u >= maxLength)
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maxLength *= 2;
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else
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maxLength = Util::MaxValueOfType(maxLength);
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} else
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{
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size_t encodedBytesPerSample = GetNumChannels() * GetEncodedBitsPerSample() / 8u;
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// Check if we can round up without overflowing
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if(Util::MaxValueOfType(maxLength) - maxLength >= (encodedBytesPerSample - 1u))
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maxLength += encodedBytesPerSample - 1u;
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else
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maxLength = Util::MaxValueOfType(maxLength);
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maxLength /= encodedBytesPerSample;
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}
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LimitMax(sample.nLength, mpt::saturate_cast<SmpLength>(maxLength));
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} else if(GetEncoding() == IT214 || GetEncoding() == IT215 || GetEncoding() == MDL || GetEncoding() == DMF)
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{
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// In the best case, IT compression represents each sample point as a single bit.
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// In practice, there is of course the two-byte header per compressed block and the initial bit width change.
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// As a result, if we have a file length of n, we know that the sample can be at most n*8 sample points long.
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// For DMF, there are at least two bits per sample, and for MDL at least 5 (so both are worse than IT).
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size_t maxLength = fileSize;
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uint8 maxSamplesPerByte = 8 / GetNumChannels();
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if(Util::MaxValueOfType(maxLength) / maxSamplesPerByte >= maxLength)
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maxLength *= maxSamplesPerByte;
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else
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maxLength = Util::MaxValueOfType(maxLength);
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LimitMax(sample.nLength, mpt::saturate_cast<SmpLength>(maxLength));
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} else if(GetEncoding() == AMS)
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{
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if(fileSize <= 9)
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return 0;
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file.Skip(4); // Target sample size (we already know this)
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SmpLength maxLength = std::min(file.ReadUint32LE(), mpt::saturate_cast<uint32>(fileSize));
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file.SkipBack(8);
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// In the best case, every byte triplet can decode to 255 bytes, which is a ratio of exactly 1:85
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if(Util::MaxValueOfType(maxLength) / 85 >= maxLength)
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maxLength *= 85;
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else
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maxLength = Util::MaxValueOfType(maxLength);
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LimitMax(sample.nLength, maxLength / (m_bitdepth / 8u));
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}
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if(sample.nLength < 1)
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{
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return 0;
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}
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sample.uFlags.set(CHN_16BIT, GetBitDepth() >= 16);
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sample.uFlags.set(CHN_STEREO, GetChannelFormat() != mono);
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size_t sampleSize = sample.AllocateSample(); // Target sample size in bytes
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if(sampleSize == 0)
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{
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sample.nLength = 0;
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return 0;
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}
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MPT_ASSERT(sampleSize >= sample.GetSampleSizeInBytes());
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//////////////////////////////////////////////////////
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// Compressed samples
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if(*this == SampleIO(_8bit, mono, littleEndian, ADPCM))
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{
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// 4-Bit ADPCM data
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int8 compressionTable[16]; // ADPCM Compression LUT
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if(file.ReadArray(compressionTable))
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{
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size_t readLength = (sample.nLength + 1) / 2;
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LimitMax(readLength, file.BytesLeft());
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const uint8 *inBuf = mpt::byte_cast<const uint8*>(sourceBuf) + sizeof(compressionTable);
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int8 *outBuf = sample.sample8();
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int8 delta = 0;
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for(size_t i = readLength; i != 0; i--)
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{
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delta += compressionTable[*inBuf & 0x0F];
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*(outBuf++) = delta;
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delta += compressionTable[(*inBuf >> 4) & 0x0F];
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*(outBuf++) = delta;
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inBuf++;
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}
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bytesRead = sizeof(compressionTable) + readLength;
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}
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} else if(GetEncoding() == IT214 || GetEncoding() == IT215)
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{
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// IT 2.14 / 2.15 compressed samples
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ITDecompression(file, sample, GetEncoding() == IT215);
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bytesRead = file.GetPosition() - filePosition;
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} else if(GetEncoding() == AMS && GetChannelFormat() == mono)
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{
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// AMS compressed samples
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file.Skip(4); // Target sample size (we already know this)
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uint32 sourceSize = file.ReadUint32LE();
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int8 packCharacter = file.ReadUint8();
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bytesRead += 9;
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FileReader::PinnedView packedDataView = file.ReadPinnedView(sourceSize);
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LimitMax(sourceSize, mpt::saturate_cast<uint32>(packedDataView.size()));
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bytesRead += sourceSize;
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AMSUnpack(reinterpret_cast<const int8 *>(packedDataView.data()), packedDataView.size(), sample.samplev(), sample.GetSampleSizeInBytes(), packCharacter);
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if(sample.uFlags[CHN_16BIT] && !mpt::endian_is_little())
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{
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auto p = sample.sample16();
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for(SmpLength length = sample.nLength; length != 0; length--, p++)
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{
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*p = mpt::bit_cast<int16le>(*p);
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}
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}
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} else if(GetEncoding() == PTM8Dto16 && GetChannelFormat() == mono && GetBitDepth() == 16)
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{
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// PTM 8-Bit delta to 16-Bit sample
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bytesRead = CopyMonoSample<SC::DecodeInt16Delta8>(sample, sourceBuf, fileSize);
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} else if(GetEncoding() == MDL && GetChannelFormat() == mono && GetBitDepth() <= 16)
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{
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// Huffman MDL compressed samples
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if(file.CanRead(8) && (fileSize = file.ReadUint32LE()) >= 4)
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{
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BitReader chunk = file.ReadChunk(fileSize);
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bytesRead = chunk.GetLength() + 4;
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uint8 dlt = 0, lowbyte = 0;
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const bool is16bit = GetBitDepth() == 16;
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try
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{
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for(SmpLength j = 0; j < sample.nLength; j++)
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{
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uint8 hibyte;
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if(is16bit)
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{
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lowbyte = static_cast<uint8>(chunk.ReadBits(8));
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}
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bool sign = chunk.ReadBits(1) != 0;
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if(chunk.ReadBits(1))
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{
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hibyte = static_cast<uint8>(chunk.ReadBits(3));
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} else
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{
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hibyte = 8;
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while(!chunk.ReadBits(1))
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{
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hibyte += 0x10;
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}
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hibyte += static_cast<uint8>(chunk.ReadBits(4));
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}
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if(sign)
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{
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hibyte = ~hibyte;
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}
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dlt += hibyte;
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if(!is16bit)
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{
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sample.sample8()[j] = dlt;
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} else
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{
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sample.sample16()[j] = lowbyte | (dlt << 8);
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}
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}
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} catch(const BitReader::eof &)
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{
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// Data is not sufficient to decode the whole sample
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//AddToLog(LogWarning, "Truncated MDL sample block");
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}
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}
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} else if(GetEncoding() == DMF && GetChannelFormat() == mono && GetBitDepth() <= 16)
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{
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// DMF Huffman compression
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if(fileSize > 4)
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{
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bytesRead = DMFUnpack(file, mpt::byte_cast<uint8 *>(sample.sampleb()), sample.GetSampleSizeInBytes());
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}
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} else if((GetEncoding() == uLaw || GetEncoding() == aLaw) && GetBitDepth() == 16 && (GetChannelFormat() == mono || GetChannelFormat() == stereoInterleaved))
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{
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SmpLength readLength = sample.nLength * GetNumChannels();
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LimitMax(readLength, mpt::saturate_cast<SmpLength>(fileSize));
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bytesRead = readLength;
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const std::byte *inBuf = sourceBuf;
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int16 *outBuf = sample.sample16();
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if(GetEncoding() == uLaw)
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{
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SC::DecodeInt16uLaw conv;
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while(readLength--)
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{
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*(outBuf++) = conv(inBuf++);
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}
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} else
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{
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SC::DecodeInt16ALaw conv;
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while(readLength--)
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{
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*(outBuf++) = conv(inBuf++);
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}
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}
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}
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/////////////////////////
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// Uncompressed samples
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//////////////////////////////////////////////////////
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// 8-Bit / Mono / PCM
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else if(GetBitDepth() == 8 && GetChannelFormat() == mono)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 8-Bit / Mono / Signed / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 8-Bit / Mono / Unsigned / PCM
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bytesRead = CopyMonoSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 8-Bit / Mono / Delta / PCM
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case MT2:
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bytesRead = CopyMonoSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
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}
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}
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//////////////////////////////////////////////////////
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// 8-Bit / Stereo Split / PCM
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else if(GetBitDepth() == 8 && GetChannelFormat() == stereoSplit)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 8-Bit / Stereo Split / Signed / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 8-Bit / Stereo Split / Unsigned / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 8-Bit / Stereo Split / Delta / PCM
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case MT2: // same as deltaPCM, but right channel is stored as a difference from the left channel
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bytesRead = CopyStereoSplitSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
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if(GetEncoding() == MT2)
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{
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for(int8 *p = sample.sample8(), *pEnd = p + sample.nLength * 2; p < pEnd; p += 2)
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{
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p[1] = static_cast<int8>(static_cast<uint8>(p[0]) + static_cast<uint8>(p[1]));
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}
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}
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
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}
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}
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//////////////////////////////////////////////////////
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// 8-Bit / Stereo Interleaved / PCM
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else if(GetBitDepth() == 8 && GetChannelFormat() == stereoInterleaved)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 8-Bit / Stereo Interleaved / Signed / PCM
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bytesRead = CopyStereoInterleavedSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 8-Bit / Stereo Interleaved / Unsigned / PCM
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bytesRead = CopyStereoInterleavedSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 8-Bit / Stereo Interleaved / Delta / PCM
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bytesRead = CopyStereoInterleavedSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
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}
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}
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//////////////////////////////////////////////////////
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// 16-Bit / Mono / Little Endian / PCM
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else if(GetBitDepth() == 16 && GetChannelFormat() == mono && GetEndianness() == littleEndian)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 16-Bit / Stereo Interleaved / Signed / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 16-Bit / Stereo Interleaved / Unsigned / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 16-Bit / Stereo Interleaved / Delta / PCM
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case MT2:
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bytesRead = CopyMonoSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
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}
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}
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//////////////////////////////////////////////////////
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// 16-Bit / Mono / Big Endian / PCM
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else if(GetBitDepth() == 16 && GetChannelFormat() == mono && GetEndianness() == bigEndian)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 16-Bit / Mono / Signed / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt16<0, bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 16-Bit / Mono / Unsigned / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt16<0x8000u, bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 16-Bit / Mono / Delta / PCM
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bytesRead = CopyMonoSample<SC::DecodeInt16Delta<bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
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}
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}
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//////////////////////////////////////////////////////
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// 16-Bit / Stereo Split / Little Endian / PCM
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else if(GetBitDepth() == 16 && GetChannelFormat() == stereoSplit && GetEndianness() == littleEndian)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 16-Bit / Stereo Split / Signed / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 16-Bit / Stereo Split / Unsigned / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 16-Bit / Stereo Split / Delta / PCM
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case MT2: // same as deltaPCM, but right channel is stored as a difference from the left channel
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
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if(GetEncoding() == MT2)
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{
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for(int16 *p = sample.sample16(), *pEnd = p + sample.nLength * 2; p < pEnd; p += 2)
|
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{
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p[1] = static_cast<int16>(static_cast<uint16>(p[0]) + static_cast<uint16>(p[1]));
|
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}
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}
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
|
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}
|
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}
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|
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//////////////////////////////////////////////////////
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// 16-Bit / Stereo Split / Big Endian / PCM
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else if(GetBitDepth() == 16 && GetChannelFormat() == stereoSplit && GetEndianness() == bigEndian)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 16-Bit / Stereo Split / Signed / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0, bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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case unsignedPCM: // 16-Bit / Stereo Split / Unsigned / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0x8000u, bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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case deltaPCM: // 16-Bit / Stereo Split / Delta / PCM
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bytesRead = CopyStereoSplitSample<SC::DecodeInt16Delta<bigEndian16> >(sample, sourceBuf, fileSize);
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break;
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default:
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MPT_ASSERT_NOTREACHED();
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break;
|
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}
|
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}
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|
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//////////////////////////////////////////////////////
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// 16-Bit / Stereo Interleaved / Little Endian / PCM
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else if(GetBitDepth() == 16 && GetChannelFormat() == stereoInterleaved && GetEndianness() == littleEndian)
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{
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switch(GetEncoding())
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{
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case signedPCM: // 16-Bit / Stereo Interleaved / Signed / PCM
|
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bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
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break;
|
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case unsignedPCM: // 16-Bit / Stereo Interleaved / Unsigned / PCM
|
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bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
|
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break;
|
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case deltaPCM: // 16-Bit / Stereo Interleaved / Delta / PCM
|
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bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
|
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break;
|
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default:
|
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MPT_ASSERT_NOTREACHED();
|
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break;
|
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}
|
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}
|
|
|
|
//////////////////////////////////////////////////////
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// 16-Bit / Stereo Interleaved / Big Endian / PCM
|
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else if(GetBitDepth() == 16 && GetChannelFormat() == stereoInterleaved && GetEndianness() == bigEndian)
|
|
{
|
|
switch(GetEncoding())
|
|
{
|
|
case signedPCM: // 16-Bit / Stereo Interleaved / Signed / PCM
|
|
bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0, bigEndian16> >(sample, sourceBuf, fileSize);
|
|
break;
|
|
case unsignedPCM: // 16-Bit / Stereo Interleaved / Unsigned / PCM
|
|
bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0x8000u, bigEndian16> >(sample, sourceBuf, fileSize);
|
|
break;
|
|
case deltaPCM: // 16-Bit / Stereo Interleaved / Delta / PCM
|
|
bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16Delta<bigEndian16> >(sample, sourceBuf, fileSize);
|
|
break;
|
|
default:
|
|
MPT_ASSERT_NOTREACHED();
|
|
break;
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 24-Bit / Signed / Mono / PCM
|
|
else if(GetBitDepth() == 24 && GetChannelFormat() == mono && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, littleEndian24> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, bigEndian24> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 24-Bit / Signed / Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 24 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, littleEndian24> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, bigEndian24> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Signed / Mono / PCM
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == mono && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, littleEndian32> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, bigEndian32> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Signed / Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, littleEndian32> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, bigEndian32> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 64-Bit / Signed / Mono / PCM
|
|
else if(GetBitDepth() == 64 && GetChannelFormat() == mono && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int64>, SC::DecodeInt64<0, littleEndian64> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, int64>, SC::DecodeInt64<0, bigEndian64> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 64-Bit / Signed / Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 64 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int64>, SC::DecodeInt64<0, littleEndian64> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, int64>, SC::DecodeInt64<0, bigEndian64> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Mono / PCM
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == mono && GetEncoding() == floatPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeFloat32<littleEndian32> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeFloat32<bigEndian32> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == stereoInterleaved && GetEncoding() == floatPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeFloat32<littleEndian32> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeFloat32<bigEndian32> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 64-Bit / Float / Mono / PCM
|
|
else if(GetBitDepth() == 64 && GetChannelFormat() == mono && GetEncoding() == floatPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, float64>, SC::DecodeFloat64<littleEndian64> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample<SC::ConversionChain<SC::Convert<int16, float64>, SC::DecodeFloat64<bigEndian64> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 64-Bit / Float / Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 64 && GetChannelFormat() == stereoInterleaved && GetEncoding() == floatPCM)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, float64>, SC::DecodeFloat64<littleEndian64> > >(sample, sourceBuf, fileSize);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample<SC::ConversionChain<SC::Convert<int16, float64>, SC::DecodeFloat64<bigEndian64> > >(sample, sourceBuf, fileSize);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 24-Bit / Signed / Mono, Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 24 && (GetChannelFormat() == mono || GetChannelFormat() == stereoInterleaved) && GetEncoding() == signedPCMnormalize)
|
|
{
|
|
// Normalize to 16-Bit
|
|
uint32 srcPeak = uint32(1)<<31;
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, littleEndian24> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
} else
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, bigEndian24> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
}
|
|
if(bytesRead && srcPeak != uint32(1)<<31)
|
|
{
|
|
// Adjust sample volume so we do not affect relative volume of the sample. Normalizing is only done to increase precision.
|
|
sample.nGlobalVol = static_cast<uint16>(Clamp(Util::muldivr_unsigned(sample.nGlobalVol, srcPeak, uint32(1)<<31), uint32(1), uint32(64)));
|
|
sample.uFlags.set(SMP_MODIFIED);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Signed / Mono, Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 32 && (GetChannelFormat() == mono || GetChannelFormat() == stereoInterleaved) && GetEncoding() == signedPCMnormalize)
|
|
{
|
|
// Normalize to 16-Bit
|
|
uint32 srcPeak = uint32(1)<<31;
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, littleEndian32> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
} else
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, bigEndian32> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
}
|
|
if(bytesRead && srcPeak != uint32(1)<<31)
|
|
{
|
|
// Adjust sample volume so we do not affect relative volume of the sample. Normalizing is only done to increase precision.
|
|
sample.nGlobalVol = static_cast<uint16>(Clamp(Util::muldivr_unsigned(sample.nGlobalVol, srcPeak, uint32(1)<<31), uint32(1), uint32(64)));
|
|
sample.uFlags.set(SMP_MODIFIED);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Mono, Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 32 && (GetChannelFormat() == mono || GetChannelFormat() == stereoInterleaved) && GetEncoding() == floatPCMnormalize)
|
|
{
|
|
// Normalize to 16-Bit
|
|
float32 srcPeak = 1.0f;
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, float32>, SC::DecodeFloat32<littleEndian32> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
} else
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, float32>, SC::DecodeFloat32<bigEndian32> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
}
|
|
if(bytesRead && srcPeak != 1.0f)
|
|
{
|
|
// Adjust sample volume so we do not affect relative volume of the sample. Normalizing is only done to increase precision.
|
|
sample.nGlobalVol = mpt::saturate_round<uint16>(Clamp(sample.nGlobalVol * srcPeak, 1.0f, 64.0f));
|
|
sample.uFlags.set(SMP_MODIFIED);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 64-Bit / Float / Mono, Stereo Interleaved / PCM
|
|
else if(GetBitDepth() == 64 && (GetChannelFormat() == mono || GetChannelFormat() == stereoInterleaved) && GetEncoding() == floatPCMnormalize)
|
|
{
|
|
// Normalize to 16-Bit
|
|
float64 srcPeak = 1.0;
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, float64>, SC::DecodeFloat64<littleEndian64> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
} else
|
|
{
|
|
bytesRead = CopyAndNormalizeSample<SC::NormalizationChain<SC::Convert<int16, float64>, SC::DecodeFloat64<bigEndian64> > >(sample, sourceBuf, fileSize, &srcPeak);
|
|
}
|
|
if(bytesRead && srcPeak != 1.0)
|
|
{
|
|
// Adjust sample volume so we do not affect relative volume of the sample. Normalizing is only done to increase precision.
|
|
sample.nGlobalVol = mpt::saturate_round<uint16>(Clamp(sample.nGlobalVol * srcPeak, 1.0, 64.0));
|
|
sample.uFlags.set(SMP_MODIFIED);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Mono / PCM / full scale 2^15
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == mono && GetEncoding() == floatPCM15)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<littleEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<littleEndian32>(1.0f / static_cast<float>(1<<15)))
|
|
);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<bigEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<bigEndian32>(1.0f / static_cast<float>(1<<15)))
|
|
);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Stereo Interleaved / PCM / full scale 2^15
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == stereoInterleaved && GetEncoding() == floatPCM15)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<littleEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<littleEndian32>(1.0f / static_cast<float>(1<<15)))
|
|
);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<bigEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<bigEndian32>(1.0f / static_cast<float>(1<<15)))
|
|
);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Stereo Interleaved / PCM / full scale 2^23
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == mono && GetEncoding() == floatPCM23)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyMonoSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<littleEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<littleEndian32>(1.0f / static_cast<float>(1<<23)))
|
|
);
|
|
} else
|
|
{
|
|
bytesRead = CopyMonoSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<bigEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<bigEndian32>(1.0f / static_cast<float>(1<<23)))
|
|
);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////
|
|
// 32-Bit / Float / Stereo Interleaved / PCM / full scale 2^23
|
|
else if(GetBitDepth() == 32 && GetChannelFormat() == stereoInterleaved && GetEncoding() == floatPCM23)
|
|
{
|
|
if(GetEndianness() == littleEndian)
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<littleEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<littleEndian32>(1.0f / static_cast<float>(1<<23)))
|
|
);
|
|
} else
|
|
{
|
|
bytesRead = CopyStereoInterleavedSample
|
|
(sample, sourceBuf, fileSize,
|
|
SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeScaledFloat32<bigEndian32> >
|
|
(SC::Convert<int16, float32>(), SC::DecodeScaledFloat32<bigEndian32>(1.0f / static_cast<float>(1<<23)))
|
|
);
|
|
}
|
|
}
|
|
|
|
////////////////
|
|
// Unsupported
|
|
else
|
|
{
|
|
MPT_ASSERT_NOTREACHED();
|
|
}
|
|
|
|
MPT_ASSERT(filePosition + bytesRead <= file.GetLength());
|
|
file.Seek(filePosition + bytesRead);
|
|
return bytesRead;
|
|
}
|
|
|
|
|
|
#ifndef MODPLUG_NO_FILESAVE
|
|
|
|
|
|
// Write a sample to file
|
|
size_t SampleIO::WriteSample(std::ostream &f, const ModSample &sample, SmpLength maxSamples) const
|
|
{
|
|
if(sample.uFlags[CHN_ADLIB])
|
|
{
|
|
mpt::IO::Write(f, sample.adlib);
|
|
return sizeof(sample.adlib);
|
|
}
|
|
if(!sample.HasSampleData())
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
std::array<std::byte, mpt::IO::BUFFERSIZE_TINY> writeBuffer;
|
|
mpt::IO::WriteBuffer<std::ostream> fb{f, mpt::as_span(writeBuffer)};
|
|
|
|
SmpLength numSamples = sample.nLength;
|
|
|
|
if(maxSamples && numSamples > maxSamples)
|
|
{
|
|
numSamples = maxSamples;
|
|
}
|
|
|
|
std::size_t len = CalculateEncodedSize(numSamples);
|
|
|
|
if(GetBitDepth() == 16 && GetChannelFormat() == mono && GetEndianness() == littleEndian &&
|
|
(GetEncoding() == signedPCM || GetEncoding() == unsignedPCM || GetEncoding() == deltaPCM))
|
|
{
|
|
// 16-bit little-endian mono samples
|
|
MPT_ASSERT(len == numSamples * 2);
|
|
const int16 *const pSample16 = sample.sample16();
|
|
const int16 *p = pSample16;
|
|
int s_old = 0;
|
|
const int s_ofs = (GetEncoding() == unsignedPCM) ? 0x8000 : 0;
|
|
for(SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
int s_new = *p;
|
|
p++;
|
|
if(sample.uFlags[CHN_STEREO])
|
|
{
|
|
// Downmix stereo
|
|
s_new = (s_new + (*p) + 1) / 2;
|
|
p++;
|
|
}
|
|
if(GetEncoding() == deltaPCM)
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_le(static_cast<int16>(s_new - s_old)));
|
|
s_old = s_new;
|
|
} else
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_le(static_cast<int16>(s_new + s_ofs)));
|
|
}
|
|
}
|
|
}
|
|
|
|
else if(GetBitDepth() == 8 && GetChannelFormat() == stereoSplit &&
|
|
(GetEncoding() == signedPCM || GetEncoding() == unsignedPCM || GetEncoding() == deltaPCM))
|
|
{
|
|
// 8-bit Stereo samples (not interleaved)
|
|
MPT_ASSERT(len == numSamples * 2);
|
|
const int8 *const pSample8 = sample.sample8();
|
|
const int s_ofs = (GetEncoding() == unsignedPCM) ? 0x80 : 0;
|
|
for (uint32 iCh=0; iCh<2; iCh++)
|
|
{
|
|
const int8 *p = pSample8 + iCh;
|
|
int s_old = 0;
|
|
for (SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
int s_new = *p;
|
|
p += 2;
|
|
if (GetEncoding() == deltaPCM)
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new - s_old));
|
|
s_old = s_new;
|
|
} else
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new + s_ofs));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else if(GetBitDepth() == 16 && GetChannelFormat() == stereoSplit && GetEndianness() == littleEndian &&
|
|
(GetEncoding() == signedPCM || GetEncoding() == unsignedPCM || GetEncoding() == deltaPCM))
|
|
{
|
|
// 16-bit little-endian Stereo samples (not interleaved)
|
|
MPT_ASSERT(len == numSamples * 4);
|
|
const int16 *const pSample16 = sample.sample16();
|
|
const int s_ofs = (GetEncoding() == unsignedPCM) ? 0x8000 : 0;
|
|
for (uint32 iCh=0; iCh<2; iCh++)
|
|
{
|
|
const int16 *p = pSample16 + iCh;
|
|
int s_old = 0;
|
|
for (SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
int s_new = *p;
|
|
p += 2;
|
|
if (GetEncoding() == deltaPCM)
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_le(static_cast<int16>(s_new - s_old)));
|
|
s_old = s_new;
|
|
} else
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_le(static_cast<int16>(s_new + s_ofs)));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else if(GetBitDepth() == 8 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM)
|
|
{
|
|
// Stereo signed interleaved
|
|
MPT_ASSERT(len == numSamples * 2);
|
|
const int8 *const pSample8 = sample.sample8();
|
|
mpt::IO::WriteRaw(f, reinterpret_cast<const std::byte*>(pSample8), len);
|
|
}
|
|
|
|
else if(GetBitDepth() == 16 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM && GetEndianness() == littleEndian)
|
|
{
|
|
// Stereo signed interleaved
|
|
MPT_ASSERT(len == numSamples * 4);
|
|
const int16 *const pSample16 = sample.sample16();
|
|
const int16 *p = pSample16;
|
|
for(SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_le(p[0]));
|
|
mpt::IO::Write(fb, mpt::as_le(p[1]));
|
|
p += 2;
|
|
}
|
|
}
|
|
|
|
else if(GetBitDepth() == 16 && GetChannelFormat() == stereoInterleaved && GetEncoding() == signedPCM && GetEndianness() == bigEndian)
|
|
{
|
|
// Stereo signed interleaved
|
|
MPT_ASSERT(len == numSamples * 4);
|
|
const int16 *const pSample16 = sample.sample16();
|
|
const int16 *p = pSample16;
|
|
for(SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
mpt::IO::Write(fb, mpt::as_be(p[0]));
|
|
mpt::IO::Write(fb, mpt::as_be(p[1]));
|
|
p += 2;
|
|
}
|
|
}
|
|
|
|
else if(GetBitDepth() == 8 && GetChannelFormat() == stereoInterleaved && GetEncoding() == unsignedPCM)
|
|
{
|
|
// Stereo unsigned interleaved
|
|
MPT_ASSERT(len == numSamples * 2);
|
|
const int8 *const pSample8 = sample.sample8();
|
|
for(SmpLength j = 0; j < numSamples * 2; j++)
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(static_cast<uint8>(pSample8[j]) + 0x80));
|
|
}
|
|
}
|
|
|
|
else if(GetEncoding() == IT214 || GetEncoding() == IT215)
|
|
{
|
|
// IT2.14-encoded samples
|
|
ITCompression its(sample, GetEncoding() == IT215, &f, numSamples);
|
|
len = its.GetCompressedSize();
|
|
}
|
|
|
|
// Default: assume 8-bit PCM data
|
|
else
|
|
{
|
|
MPT_ASSERT(GetBitDepth() == 8);
|
|
MPT_ASSERT(len == numSamples);
|
|
if(sample.uFlags[CHN_16BIT])
|
|
{
|
|
const int16 *p = sample.sample16();
|
|
int s_old = 0;
|
|
const int s_ofs = (GetEncoding() == unsignedPCM) ? 0x80 : 0;
|
|
for(SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
int s_new = mpt::rshift_signed(*p, 8);
|
|
p++;
|
|
if(sample.uFlags[CHN_STEREO])
|
|
{
|
|
s_new = (s_new + mpt::rshift_signed(*p, 8) + 1) / 2;
|
|
p++;
|
|
}
|
|
if(GetEncoding() == deltaPCM)
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new - s_old));
|
|
s_old = s_new;
|
|
} else
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new + s_ofs));
|
|
}
|
|
}
|
|
} else
|
|
{
|
|
const int8 *const pSample8 = sample.sample8();
|
|
const int8 *p = pSample8;
|
|
int s_old = 0;
|
|
const int s_ofs = (GetEncoding() == unsignedPCM) ? 0x80 : 0;
|
|
for(SmpLength j = 0; j < numSamples; j++)
|
|
{
|
|
int s_new = *p;
|
|
p++;
|
|
if(sample.uFlags[CHN_STEREO])
|
|
{
|
|
s_new = (s_new + (static_cast<int>(*p)) + 1) / 2;
|
|
p++;
|
|
}
|
|
if(GetEncoding() == deltaPCM)
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new - s_old));
|
|
s_old = s_new;
|
|
} else
|
|
{
|
|
mpt::IO::Write(fb, static_cast<int8>(s_new + s_ofs));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
|
|
#endif // MODPLUG_NO_FILESAVE
|
|
|
|
|
|
OPENMPT_NAMESPACE_END
|