internal static byte[] StreamToBuffer (Stream assemblyStream)
{
byte [] buffer;
using (assemblyStream) {
// avoid extra step for MemoryStream (but not any stream that inherits from it)
if (assemblyStream.GetType () == MemoryStreamType)
return (assemblyStream as MemoryStream).ToArray ();
// it's normally bad to depend on Stream.Length since some stream (e.g. NetworkStream)
// don't implement them. However it is safe in this case (i.e. SL2 depends on Length too)
buffer = new byte [assemblyStream.Length];
int length = buffer.Length;
int offset = 0;
while (length > 0) {
int read = assemblyStream.Read (buffer, offset, length);
if (read == 0)
break;
length -= read;
offset += read;
}
}
return buffer;
}
internal static bool IsFileStream(Stream stream)
{
if (FileStreamType.Value == null)
{
return false;
}
var type = stream.GetType();
return type == FileStreamType.Value || type.GetTypeInfo().IsSubclassOf(FileStreamType.Value);
}
public static void CreateDiskImage(System.IO.Stream s, FATFormatInfo fi)
{
if (s.GetType() == typeof(System.IO.FileStream))
{
CreateDiskImage((System.IO.FileStream)s, fi);
return;
}
s.SetLength(0);
FileCompression.WriteZeros(s, 0, (long)fi.TotalSectors * 512);
FormatDiskImage(s, fi, false);
}
/// <summary>
/// Returns the stream as an array.
/// </summary>
public byte[] ToArray()
{
if (Stream.GetType() == typeof(FileStream))
{
Stream.Position = 0;
byte[] buffer = new byte[Stream.Length];
Stream.Read(buffer, 0, buffer.Length);
return(buffer);
}
return(((MemoryStream)Stream).ToArray());
}
public AviWriter(System.IO.Stream outputAvi, string fourCC, int width, int height, float fps)
{
// RIFFファイルは、RIFFヘッダーとその後ろに続く 0個以上のリストとチャンクで構成されている。
// RIFFヘッダーは、'RIFF'のFOURCC、4バイトのデータサイズ、データを識別するFOURCC、データから構成されている。
// リストは、'LIST'のFOURCC、4バイトのデータサイズ、データを識別するFOURCC、データから構成されている。
// チャンクは、データを識別するFOURCC、4バイトのデータサイズ、データから構成されている。
// チャンクデータを識別するFOURCCは、2桁のストリーム番号とその後に続く2文字コード(dc=ビデオ，wb=音声，tx=字幕など)で構成されている。
// AVIファイルは、'AVI 'のFOURCCと、2つの必須のLISTチャンク('hdrl''movi')、オプションのインデックスチャンクから構成されるRIFFファイルである。
var riffFile = new RiffFile(outputAvi, "AVI ");
// hdrlリストを仮のフレーム数で作成
var hdrlList = riffFile.CreateList("hdrl");
WriteHdrlList(hdrlList, fourCC, width, height, fps, 0);
hdrlList.Close();
// moviリストを作成し、OnAddImageごとにデータチャンクを追加
var idx1List = new List <Idx1Entry>();
var moviList = riffFile.CreateList("movi");
this.OnAddImage += (data, keyFrame) =>
{
var idx1 = WriteMoviList(moviList, "00dc", data);
idx1.KeyFrame = keyFrame;
idx1List.Add(idx1);
};
// ファイルをクローズ
this.OnClose += () =>
{
// moviリストを閉じる
moviList.Close();
// idx1チャンクを作成
WriteIdx1Chunk(riffFile, idx1List);
// hdrlListを正しいフレーム数で上書き
var offset = hdrlList.Offset;
riffFile.BaseStream.Seek(offset, System.IO.SeekOrigin.Begin); // hdrlリストの先頭まで戻る
riffFile.BaseStream.Seek(12, System.IO.SeekOrigin.Current); // hdrlリストのヘッダ分飛ばす
WriteHdrlList(riffFile, fourCC, width, height, fps, idx1List.Count); // hdrlリストのデータを正しいフレーム数で上書き
riffFile.BaseStream.Seek(0, System.IO.SeekOrigin.End); // 元の場所に戻る
// ファイルをクローズ
riffFile.Close();
if (outputAvi.GetType() == typeof(MemoryStream))
{
finishedData = ((MemoryStream)outputAvi).ToArray();
}
outputAvi.Dispose();
};
}
public Stream()
{
var pitch = 12;
var height = 2;
var size = pitch * height;
SurfaceStream = FormatterServices.GetUninitializedObject(typeof(SurfaceStream)) as SurfaceStream;
var fieldPtr = SurfaceStream.GetType().GetField("_ptr", BindingFlags.Instance | BindingFlags.NonPublic);
var fieldLength = SurfaceStream.GetType().GetField("_length", BindingFlags.Instance | BindingFlags.NonPublic);
var fieldSurface = SurfaceStream.GetType().GetField("_surface", BindingFlags.Instance | BindingFlags.NonPublic);
var handle = new ObjectHandle();
var data = Marshal.AllocHGlobal(size);
for (var i = 0; i < size; ++i)
{
Marshal.WriteByte(data, i, 0);
}
fieldPtr.SetValue(SurfaceStream, data);
fieldLength.SetValue(SurfaceStream, size);
fieldSurface.SetValue(SurfaceStream, handle);
}
public static void WriteZeros(System.IO.Stream s, long begin, long end)
{
if (s.GetType() == typeof(System.IO.FileStream))
{
WriteZeros((System.IO.FileStream)s, begin, end);
}
else
{
for (long t = begin; t < end; t += 512)
{
s.Write(sector, 0, (int)Math.Min(512, end - t));
}
s.Position = end;
}
}
private static bool OverridesBeginMethod(Stream stream, string methodName)
{
// Get all of the methods on the underlying stream
var methods = stream.GetType().GetMethods(BindingFlags.Public | BindingFlags.Instance);
// If any of the methods have the desired name and are defined on the base Stream
// Type, then the method was not overridden. If none of them were defined on the
// base Stream, then it must have been overridden.
foreach (var method in methods)
{
if (method.DeclaringType == typeof(Stream) &&
method.Name == methodName)
{
return(false);
}
}
return(true);
}
public static MemoryStream ToMemoryStream(this System.IO.Stream stream)
{
if (stream.GetType() == typeof(MemoryStream))
{
return((MemoryStream)stream);
}
MemoryStream memoryStream = new MemoryStream();
byte[] buffer = new byte[4096];
int numBytesRead;
while ((numBytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
{
memoryStream.Write(buffer, 0, numBytesRead);
}
return(memoryStream);
}
public override System.IO.Stream ChainStream(System.IO.Stream stream)
{
Stream ret;
if (FirstPhase && stream.GetType().Name == "SoapExtensionStream")
{
ret = base.ChainStream(stream);
}
else if (!FirstPhase && oldStream == null)
{
ret = base.ChainStream(stream);
}
else
{
oldStream = stream;
newStream = new MemoryStream();
ret = newStream;
}
FirstPhase = false;
return(ret);
}
public BinaryReader(Stream input, Encoding encoding, bool leaveOpen)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (encoding == null)
{
throw new ArgumentNullException(nameof(encoding));
}
if (!input.CanRead)
{
throw new ArgumentException(SR.Argument_StreamNotReadable);
}
_stream = input;
_decoder = encoding.GetDecoder();
_maxCharsSize = encoding.GetMaxCharCount(MaxCharBytesSize);
int minBufferSize = encoding.GetMaxByteCount(1); // max bytes per one char
if (minBufferSize < 16)
{
minBufferSize = 16;
}
_buffer = new byte[minBufferSize];
// _charBuffer and _charBytes will be left null.
// For Encodings that always use 2 bytes per char (or more),
// special case them here to make Read() & Peek() faster.
_2BytesPerChar = encoding is UnicodeEncoding;
// check if BinaryReader is based on MemoryStream, and keep this for it's life
// we cannot use "as" operator, since derived classes are not allowed
_isMemoryStream = (_stream.GetType() == typeof(MemoryStream));
_leaveOpen = leaveOpen;
Debug.Assert(_decoder != null, "[BinaryReader.ctor]_decoder!=null");
}
public BinaryReader(Stream input, Encoding encoding, bool leaveOpen)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
if (encoding == null)
{
throw new ArgumentNullException("encoding");
}
if (!input.CanRead)
{
throw new ArgumentException(Environment.GetResourceString("Argument_StreamNotReadable"));
}
Contract.EndContractBlock();
m_stream = input;
m_decoder = encoding.GetDecoder();
m_maxCharsSize = encoding.GetMaxCharCount(MaxCharBytesSize);
int minBufferSize = encoding.GetMaxByteCount(1); // max bytes per one char
if (minBufferSize < 16)
{
minBufferSize = 16;
}
m_buffer = new byte[minBufferSize];
// m_charBuffer and m_charBytes will be left null.
// For Encodings that always use 2 bytes per char (or more),
// special case them here to make Read() & Peek() faster.
m_2BytesPerChar = encoding is UnicodeEncoding;
// check if BinaryReader is based on MemoryStream, and keep this for it's life
// we cannot use "as" operator, since derived classes are not allowed
m_isMemoryStream = (m_stream.GetType() == typeof(MemoryStream));
m_leaveOpen = leaveOpen;
Contract.Assert(m_decoder != null, "[BinaryReader.ctor]m_decoder!=null");
}
public BinaryReader(Stream input, Encoding encoding, bool leaveOpen)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (encoding == null)
{
throw new ArgumentNullException(nameof(encoding));
}
if (!input.CanRead)
{
throw new ArgumentException(SR.Argument_StreamNotReadable);
}
_stream = input;
_decoder = encoding.GetDecoder();
_maxCharsSize = encoding.GetMaxCharCount(MaxCharBytesSize);
int minBufferSize = encoding.GetMaxByteCount(1); // max bytes per one char
if (minBufferSize < 16)
{
minBufferSize = 16;
}
_buffer = new byte[minBufferSize];
// _charBuffer and _charBytes will be left null.
// For Encodings that always use 2 bytes per char (or more),
// special case them here to make Read() & Peek() faster.
_2BytesPerChar = encoding is UnicodeEncoding;
// check if BinaryReader is based on MemoryStream, and keep this for it's life
// we cannot use "as" operator, since derived classes are not allowed
_isMemoryStream = (_stream.GetType() == typeof(MemoryStream));
_leaveOpen = leaveOpen;
Debug.Assert(_decoder != null, "[BinaryReader.ctor]_decoder!=null");
}
// GetSubStream returns a 'copy' of the InputStream with Position set to 0.
static Stream GetSubStream (Stream stream)
{
#if !TARGET_JVM
if (stream is IntPtrStream)
return new IntPtrStream (stream);
#endif
if (stream is MemoryStream) {
MemoryStream other = (MemoryStream) stream;
return new MemoryStream (other.GetBuffer (), 0, (int) other.Length, false, true);
}
if (stream is TempFileStream) {
((TempFileStream) stream).SavePosition ();
return stream;
}
throw new NotSupportedException ("The stream is " + stream.GetType ());
}
