Beispiel #1
0
OPENMPT_NAMESPACE_BEGIN


PNG::Bitmap *PNG::ReadPNG(FileReader &file)
//-----------------------------------------
{
	file.Rewind();
	if(!file.ReadMagic("\211PNG\r\n\032\n"))
	{
		return nullptr;
	}

	uint32_t width = 0;
	uint32_t height = 0;
	uint8_t bitDepth;
	uint8_t colorType;
	uint8_t compressionMethod;
	uint8_t filterMethod;
	uint8_t interlaceMethod;

	std::vector<uint8_t> dataIn;
	std::vector<Pixel> palette;

	while(file.AreBytesLeft())
	{
		uint32_t chunkLength = file.ReadUint32BE();
		char magic[4];
		file.ReadArray(magic);
		FileReader chunk = file.ReadChunk(chunkLength);
		file.Skip(4);	// CRC32
		if(!memcmp(magic, "IHDR", 4))
		{
			// Image header
			width = chunk.ReadUint32BE();
			height = chunk.ReadUint32BE();
			bitDepth = chunk.ReadUint8();
			colorType = chunk.ReadUint8();
			compressionMethod = chunk.ReadUint8();
			filterMethod = chunk.ReadUint8();
			interlaceMethod = chunk.ReadUint8();
			ASSERT(!filterMethod && !interlaceMethod);
		} else if(!memcmp(magic, "IDAT", 4))
		{
			// Data block(s)
			z_stream strm;
			strm.zalloc = Z_NULL;
			strm.zfree = Z_NULL;
			strm.opaque = Z_NULL;
			strm.avail_in = static_cast<uInt>(chunk.GetLength());
			strm.next_in = (Bytef *)(chunk.GetRawData());
			if(inflateInit2(&strm, 15) != Z_OK)
			{
				break;
			}
			int retVal;
			do
			{
				dataIn.resize(dataIn.size() + 4096);
				strm.avail_out = 4096;
				strm.next_out = (Bytef *)&dataIn[dataIn.size() - 4096];
				retVal = inflate(&strm, Z_NO_FLUSH);
			} while(retVal == Z_OK);
			inflateEnd(&strm);
		} else if(!memcmp(magic, "PLTE", 4))
		{
			// Palette for <= 8-bit images
			palette.resize(256);
			size_t numEntries = std::min<size_t>(256u, chunk.GetLength() / 3u);
			for(size_t i = 0; i < numEntries; i++)
			{
				uint8_t p[3];
				chunk.ReadArray(p);
				palette[i] = Pixel(p[0], p[1], p[2], 255);
			}
		}
	}

	// LUT for translating the color type into a number of color samples
	const uint32_t sampleTable[] =
	{
		1,	// 0: Grayscale
		0,
		3,	// 2: RGB
		1,	// 3: Palette bitmap
		2,	// 4: Grayscale + Alpha
		0,
		4	// 6: RGBA
	};
	const uint32_t bitsPerPixel = colorType < CountOf(sampleTable) ? sampleTable[colorType] * bitDepth : 0;

	if(!width || !height || !bitsPerPixel
		|| (colorType != 2  && colorType != 3 && colorType != 6) || bitDepth != 8	// Only RGB(A) and 8-bit palette PNGs for now.
		|| compressionMethod || interlaceMethod
		|| (colorType == 3 && palette.empty())
		|| dataIn.size() < (bitsPerPixel * width * height) / 8 + height)			// Enough data present?
	{
		return nullptr;
	}

	Bitmap *bitmap = new (std::nothrow) Bitmap(width, height);

	Pixel *pixelOut = bitmap->GetPixels();
	uint32_t x = 0, y = 0;
	size_t offset = 0;
	while(y < height)
	{
		if(x == 0)
		{
			filterMethod = dataIn[offset++];
			ASSERT(!filterMethod);
		}

		if(colorType == 6)
		{
			// RGBA
			pixelOut->r = dataIn[offset++];
			pixelOut->g = dataIn[offset++];
			pixelOut->b = dataIn[offset++];
			pixelOut->a = dataIn[offset++];
		} else if(colorType == 2)
		{
			// RGB
			pixelOut->r = dataIn[offset++];
			pixelOut->g = dataIn[offset++];
			pixelOut->b = dataIn[offset++];
			pixelOut->a = 255;
		} else if(colorType == 3)
		{
			// Palette
			*pixelOut = palette[dataIn[offset++]];
		}
		pixelOut++;
		x++;

		if(x == width)
		{
			y++;
			x = 0;
		}
	}

	return bitmap;
}
Beispiel #2
0
OPENMPT_NAMESPACE_BEGIN


#if MPT_COMPILER_GCC
#if MPT_GCC_AT_LEAST(4,6,0)
#pragma GCC diagnostic push
#endif
#pragma GCC diagnostic ignored "-Wswitch"
#elif MPT_COMPILER_CLANG
#pragma clang diagnostic push
#if MPT_CLANG_AT_LEAST(3,3,0)
#pragma clang diagnostic ignored "-Wswitch"
#else
#pragma clang diagnostic ignored "-Wswitch-enum"
#endif
#endif

// Read a sample from memory
size_t SampleIO::ReadSample(ModSample &sample, FileReader &file) const
//--------------------------------------------------------------------
{
	if(sample.nLength < 1 || !file.IsValid())
	{
		return 0;
	}

	LimitMax(sample.nLength, MAX_SAMPLE_LENGTH);

	const char * const sourceBuf = file.GetRawData();
	const FileReader::off_t fileSize = file.BytesLeft(), filePosition = file.GetPosition();
	FileReader::off_t bytesRead = 0;	// Amount of memory that has been read from file

	sample.uFlags.set(CHN_16BIT, GetBitDepth() >= 16);
	sample.uFlags.set(CHN_STEREO, GetChannelFormat() != mono);
	size_t sampleSize = sample.AllocateSample();	// Target sample size in bytes

	if(sampleSize == 0)
	{
		sample.nLength = 0;
		return 0;
	}

	ASSERT(sampleSize >= sample.GetSampleSizeInBytes());

	//////////////////////////////////////////////////////
	// 8-Bit / Mono / PCM
	if(GetBitDepth() == 8 && GetChannelFormat() == mono)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 8-Bit / Mono / Signed / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 8-Bit / Mono / Unsigned / PCM
			bytesRead = CopyMonoSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 8-Bit / Mono / Delta / PCM
		case MT2:
			bytesRead = CopyMonoSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
			break;
		case PCM7to8:		// 7 Bit stored as 8-Bit with highest bit unused / Mono / Signed / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt7>(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 8-Bit / Stereo Split / PCM
	else if(GetBitDepth() == 8 && GetChannelFormat() == stereoSplit)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 8-Bit / Stereo Split / Signed / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 8-Bit / Stereo Split / Unsigned / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 8-Bit / Stereo Split / Delta / PCM
		case MT2:
			bytesRead = CopyStereoSplitSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 8-Bit / Stereo Interleaved / PCM
	else if(GetBitDepth() == 8 && GetChannelFormat() == stereoInterleaved)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 8-Bit / Stereo Interleaved / Signed / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeInt8>(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 8-Bit / Stereo Interleaved / Unsigned / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeUint8>(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 8-Bit / Stereo Interleaved / Delta / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeInt8Delta>(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Mono / Little Endian / PCM
	else if(GetBitDepth() == 16 && GetChannelFormat() == mono && GetEndianness() == littleEndian)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 16-Bit / Stereo Interleaved / Signed / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 16-Bit / Stereo Interleaved / Unsigned / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 16-Bit / Stereo Interleaved / Delta / PCM
		case MT2:
			bytesRead = CopyMonoSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Mono / Big Endian / PCM
	else if(GetBitDepth() == 16 && GetChannelFormat() == mono && GetEndianness() == bigEndian)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 16-Bit / Mono / Signed / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt16<0, bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 16-Bit / Mono / Unsigned / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt16<0x8000u, bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 16-Bit / Mono / Delta / PCM
			bytesRead = CopyMonoSample<SC::DecodeInt16Delta<bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Stereo Split / Little Endian / PCM
	else if(GetBitDepth() == 16 && GetChannelFormat() == stereoSplit && GetEndianness() == littleEndian)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 16-Bit / Stereo Split / Signed / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 16-Bit / Stereo Split / Unsigned / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 16-Bit / Stereo Split / Delta / PCM
		case MT2:
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Stereo Split / Big Endian / PCM
	else if(GetBitDepth() == 16 && GetChannelFormat() == stereoSplit && GetEndianness() == bigEndian)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 16-Bit / Stereo Split / Signed / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0, bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 16-Bit / Stereo Split / Unsigned / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16<0x8000u, bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 16-Bit / Stereo Split / Delta / PCM
			bytesRead = CopyStereoSplitSample<SC::DecodeInt16Delta<bigEndian16> >(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Stereo Interleaved / Little Endian / PCM
	else if(GetBitDepth() == 16 && GetChannelFormat() == stereoInterleaved && GetEndianness() == littleEndian)
	{
		switch(GetEncoding())
		{
		case signedPCM:		// 16-Bit / Stereo Interleaved / Signed / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case unsignedPCM:	// 16-Bit / Stereo Interleaved / Unsigned / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16<0x8000u, littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		case deltaPCM:		// 16-Bit / Stereo Interleaved / Delta / PCM
			bytesRead = CopyStereoInterleavedSample<SC::DecodeInt16Delta<littleEndian16> >(sample, sourceBuf, fileSize);
			break;
		}
	}

	//////////////////////////////////////////////////////
	// 16-Bit / Stereo Interleaved / Big Endian / PCM
	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;
		}
	}

	//////////////////////////////////////////////////////
	// 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);
		}
	}

	//////////////////////////////////////////////////////
	// 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);
		}
	}

	//////////////////////////////////////////////////////
	// 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)
		{
			// 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)));
		}
	}

	//////////////////////////////////////////////////////
	// 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)
		{
			// 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)));
		}
	}

	//////////////////////////////////////////////////////
	// 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)
		{
			// Adjust sample volume so we do not affect relative volume of the sample. Normalizing is only done to increase precision.
			sample.nGlobalVol = Util::Round<uint16>(Clamp(sample.nGlobalVol * srcPeak, 1.0f, 64.0f));
		}
	}

	//////////////////////////////////////////////////////
	// 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)))
				);
		}
	}

	//////////////////////////////////////////////////////
	// Compressed samples
	if(*this == SampleIO(_8bit, mono, littleEndian, ADPCM))
	{
		// 4-Bit ADPCM data
		int8 compressionTable[16];	// ADPCM Compression LUT
		if(file.ReadArray(compressionTable))
		{
			size_t readLength = (sample.nLength + 1) / 2;
			LimitMax(readLength, file.BytesLeft());

			const uint8 *inBuf = reinterpret_cast<const uint8*>(sourceBuf) + sizeof(compressionTable);
			int8 *outBuf = static_cast<int8 *>(sample.pSample);
			int8 delta = 0;

			for(size_t i = readLength; i != 0; i--)
			{
				delta += compressionTable[*inBuf & 0x0F];
				*(outBuf++) = delta;
				delta += compressionTable[(*inBuf >> 4) & 0x0F];
				*(outBuf++) = delta;
				inBuf++;
			}
			bytesRead = sizeof(compressionTable) + readLength;
		}