Extract WavReader to own file and move it to FileFormats
This commit is contained in:
reaperrr
@@ -82,168 +82,4 @@ namespace OpenRA.Mods.Common.AudioLoaders
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});
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}
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}
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public class WavReader
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{
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public int FileSize;
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public string Format;
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public int FmtChunkSize;
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public int AudioFormat;
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public int Channels;
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public int SampleRate;
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public int ByteRate;
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public int BlockAlign;
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public int BitsPerSample;
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public int UncompressedSize;
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public int DataSize;
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public byte[] RawOutput;
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public enum WaveType { Pcm = 0x1, ImaAdpcm = 0x11 }
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public static WaveType Type { get; private set; }
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public bool LoadSound(Stream s)
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{
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var type = s.ReadASCII(4);
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if (type != "RIFF")
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return false;
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FileSize = s.ReadInt32();
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Format = s.ReadASCII(4);
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if (Format != "WAVE")
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return false;
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while (s.Position < s.Length)
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{
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if ((s.Position & 1) == 1)
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s.ReadByte(); // Alignment
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type = s.ReadASCII(4);
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switch (type)
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{
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case "fmt ":
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FmtChunkSize = s.ReadInt32();
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AudioFormat = s.ReadInt16();
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Type = (WaveType)AudioFormat;
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if (!Enum.IsDefined(typeof(WaveType), Type))
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throw new NotSupportedException("Compression type {0} is not supported.".F(AudioFormat));
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Channels = s.ReadInt16();
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SampleRate = s.ReadInt32();
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ByteRate = s.ReadInt32();
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BlockAlign = s.ReadInt16();
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BitsPerSample = s.ReadInt16();
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s.ReadBytes(FmtChunkSize - 16);
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break;
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case "fact":
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var chunkSize = s.ReadInt32();
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UncompressedSize = s.ReadInt32();
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s.ReadBytes(chunkSize - 4);
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break;
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case "data":
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DataSize = s.ReadInt32();
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RawOutput = s.ReadBytes(DataSize);
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break;
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default:
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var unknownChunkSize = s.ReadInt32();
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s.ReadBytes(unknownChunkSize);
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break;
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}
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}
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if (Type == WaveType.ImaAdpcm)
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{
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RawOutput = DecodeImaAdpcmData();
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BitsPerSample = 16;
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}
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return true;
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}
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public static float WaveLength(Stream s)
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{
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s.Position = 12;
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var fmt = s.ReadASCII(4);
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if (fmt != "fmt ")
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return 0;
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s.Position = 22;
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var channels = s.ReadInt16();
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var sampleRate = s.ReadInt32();
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s.Position = 34;
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var bitsPerSample = s.ReadInt16();
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var length = s.Length * 8;
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return length / (channels * sampleRate * bitsPerSample);
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}
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public byte[] DecodeImaAdpcmData()
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{
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var s = new MemoryStream(RawOutput);
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var numBlocks = DataSize / BlockAlign;
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var blockDataSize = BlockAlign - (Channels * 4);
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var outputSize = UncompressedSize * Channels * 2;
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var outOffset = 0;
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var output = new byte[outputSize];
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var predictor = new int[Channels];
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var index = new int[Channels];
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// Decode each block of IMA ADPCM data in RawOutput
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for (var block = 0; block < numBlocks; block++)
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{
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// Each block starts with a initial state per-channel
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for (var c = 0; c < Channels; c++)
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{
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predictor[c] = s.ReadInt16();
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index[c] = s.ReadUInt8();
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/* unknown/reserved */ s.ReadUInt8();
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// Output first sample from input
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output[outOffset++] = (byte)predictor[c];
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output[outOffset++] = (byte)(predictor[c] >> 8);
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if (outOffset >= outputSize)
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return output;
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}
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// Decode and output remaining data in this block
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var blockOffset = 0;
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while (blockOffset < blockDataSize)
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{
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for (var c = 0; c < Channels; c++)
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{
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// Decode 4 bytes (to 16 bytes of output) per channel
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var chunk = s.ReadBytes(4);
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var decoded = ImaAdpcmReader.LoadImaAdpcmSound(chunk, ref index[c], ref predictor[c]);
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// Interleave output, one sample per channel
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var outOffsetChannel = outOffset + (2 * c);
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for (var i = 0; i < decoded.Length; i += 2)
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{
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var outOffsetSample = outOffsetChannel + i;
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if (outOffsetSample >= outputSize)
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return output;
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output[outOffsetSample] = decoded[i];
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output[outOffsetSample + 1] = decoded[i + 1];
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outOffsetChannel += 2 * (Channels - 1);
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}
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blockOffset += 4;
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}
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outOffset += 16 * Channels;
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}
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}
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return output;
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}
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}
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}
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180
OpenRA.Mods.Common/FileFormats/WavReader.cs
Normal file
180
OpenRA.Mods.Common/FileFormats/WavReader.cs
Normal file
@@ -0,0 +1,180 @@
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#region Copyright & License Information
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/*
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* Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.IO;
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namespace OpenRA.Mods.Common.FileFormats
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{
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public class WavReader
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{
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public int FileSize;
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public string Format;
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public int FmtChunkSize;
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public int AudioFormat;
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public int Channels;
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public int SampleRate;
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public int ByteRate;
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public int BlockAlign;
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public int BitsPerSample;
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public int UncompressedSize;
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public int DataSize;
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public byte[] RawOutput;
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public enum WaveType { Pcm = 0x1, ImaAdpcm = 0x11 }
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public static WaveType Type { get; private set; }
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public bool LoadSound(Stream s)
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{
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var type = s.ReadASCII(4);
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if (type != "RIFF")
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return false;
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FileSize = s.ReadInt32();
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Format = s.ReadASCII(4);
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if (Format != "WAVE")
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return false;
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while (s.Position < s.Length)
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{
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if ((s.Position & 1) == 1)
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s.ReadByte(); // Alignment
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type = s.ReadASCII(4);
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switch (type)
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{
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case "fmt ":
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FmtChunkSize = s.ReadInt32();
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AudioFormat = s.ReadInt16();
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Type = (WaveType)AudioFormat;
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if (!Enum.IsDefined(typeof(WaveType), Type))
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throw new NotSupportedException("Compression type {0} is not supported.".F(AudioFormat));
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Channels = s.ReadInt16();
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SampleRate = s.ReadInt32();
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ByteRate = s.ReadInt32();
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BlockAlign = s.ReadInt16();
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BitsPerSample = s.ReadInt16();
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s.ReadBytes(FmtChunkSize - 16);
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break;
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case "fact":
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var chunkSize = s.ReadInt32();
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UncompressedSize = s.ReadInt32();
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s.ReadBytes(chunkSize - 4);
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break;
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case "data":
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DataSize = s.ReadInt32();
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RawOutput = s.ReadBytes(DataSize);
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break;
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default:
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var unknownChunkSize = s.ReadInt32();
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s.ReadBytes(unknownChunkSize);
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break;
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}
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}
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if (Type == WaveType.ImaAdpcm)
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{
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RawOutput = DecodeImaAdpcmData();
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BitsPerSample = 16;
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}
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return true;
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}
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public static float WaveLength(Stream s)
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{
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s.Position = 12;
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var fmt = s.ReadASCII(4);
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if (fmt != "fmt ")
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return 0;
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s.Position = 22;
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var channels = s.ReadInt16();
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var sampleRate = s.ReadInt32();
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s.Position = 34;
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var bitsPerSample = s.ReadInt16();
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var length = s.Length * 8;
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return length / (channels * sampleRate * bitsPerSample);
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}
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public byte[] DecodeImaAdpcmData()
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{
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var s = new MemoryStream(RawOutput);
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var numBlocks = DataSize / BlockAlign;
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var blockDataSize = BlockAlign - (Channels * 4);
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var outputSize = UncompressedSize * Channels * 2;
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var outOffset = 0;
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var output = new byte[outputSize];
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var predictor = new int[Channels];
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var index = new int[Channels];
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// Decode each block of IMA ADPCM data in RawOutput
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for (var block = 0; block < numBlocks; block++)
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{
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// Each block starts with a initial state per-channel
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for (var c = 0; c < Channels; c++)
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{
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predictor[c] = s.ReadInt16();
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index[c] = s.ReadUInt8();
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/* unknown/reserved */ s.ReadUInt8();
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// Output first sample from input
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output[outOffset++] = (byte)predictor[c];
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output[outOffset++] = (byte)(predictor[c] >> 8);
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if (outOffset >= outputSize)
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return output;
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}
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// Decode and output remaining data in this block
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var blockOffset = 0;
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while (blockOffset < blockDataSize)
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{
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for (var c = 0; c < Channels; c++)
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{
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// Decode 4 bytes (to 16 bytes of output) per channel
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var chunk = s.ReadBytes(4);
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var decoded = ImaAdpcmReader.LoadImaAdpcmSound(chunk, ref index[c], ref predictor[c]);
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// Interleave output, one sample per channel
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var outOffsetChannel = outOffset + (2 * c);
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for (var i = 0; i < decoded.Length; i += 2)
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{
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var outOffsetSample = outOffsetChannel + i;
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if (outOffsetSample >= outputSize)
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return output;
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output[outOffsetSample] = decoded[i];
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output[outOffsetSample + 1] = decoded[i + 1];
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outOffsetChannel += 2 * (Channels - 1);
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}
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blockOffset += 4;
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}
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outOffset += 16 * Channels;
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}
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}
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return output;
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}
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}
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}
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@@ -729,6 +729,7 @@
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<Compile Include="Traits\Render\WithIdleAnimation.cs" />
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<Compile Include="FileFormats\AudReader.cs" />
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<Compile Include="FileFormats\ImaAdpcmReader.cs" />
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<Compile Include="FileFormats\WavReader.cs" />
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<Compile Include="FileFormats\VqaReader.cs" />
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<Compile Include="FileFormats\LCWCompression.cs" />
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<Compile Include="FileFormats\XORDeltaCompression.cs" />
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