private ZErrorCode Deflate(ZFlushCode flushCode)
{
ZErrorCode errC;
try
{
errC = _zlibStream.Deflate(flushCode);
}
catch (Exception cause)
{
throw new ZLibException(SR.ZLibErrorDLLLoadError, cause);
}
switch (errC)
{
case ZErrorCode.Ok:
case ZErrorCode.StreamEnd:
return(errC);
case ZErrorCode.BufError:
return(errC); // This is a recoverable error
case ZErrorCode.StreamError:
throw new ZLibException(SR.ZLibErrorInconsistentStream, "deflate", (int)errC, _zlibStream.GetErrorMessage());
default:
throw new ZLibException(SR.ZLibErrorUnexpected, "deflate", (int)errC, _zlibStream.GetErrorMessage());
}
}
private unsafe ZErrorCode ReadDeflateOutput(IntPtr buffer, int count, ZFlushCode flushCode, out int bytesRead)
{
lock (_syncLock)
{
_zlibStream.NextOut = buffer;
_zlibStream.AvailOut = (uint)count;
ZErrorCode errC = Deflate(flushCode);
bytesRead = count - (int)_zlibStream.AvailOut;
return(errC);
}
}
private unsafe ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead)
{
lock (SyncLock)
{
fixed(byte *bufPtr = outputBuffer)
{
_zlibStream.NextOut = (IntPtr)bufPtr;
_zlibStream.AvailOut = (uint)outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int)_zlibStream.AvailOut;
return(errC);
}
}
}
private ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead)
{
lock (syncLock) {
GCHandle outputBufferHndl = GCHandle.Alloc(outputBuffer, GCHandleType.Pinned);
try {
_zlibStream.NextOut = outputBufferHndl.AddrOfPinnedObject();
_zlibStream.AvailOut = (uint)outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int)_zlibStream.AvailOut;
return(errC);
} finally {
outputBufferHndl.Free();
}
}
}
private ZErrorCode Deflate(ZFlushCode flushCode)
{
ZErrorCode errC;
try
{
errC = _zlibStream.Deflate(flushCode);
}
catch (Exception cause)
{
throw new ZLibException(SR.ZLibErrorDLLLoadError, cause);
}
switch (errC)
{
case ZErrorCode.Ok:
case ZErrorCode.StreamEnd:
return errC;
case ZErrorCode.BufError:
return errC; // This is a recoverable error
case ZErrorCode.StreamError:
throw new ZLibException(SR.ZLibErrorInconsistentStream, "deflate", (int)errC, _zlibStream.GetErrorMessage());
default:
throw new ZLibException(SR.ZLibErrorUnexpected, "deflate", (int)errC, _zlibStream.GetErrorMessage());
}
}
private unsafe ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead)
{
lock (_syncLock)
{
fixed (byte* bufPtr = outputBuffer)
{
_zlibStream.NextOut = (IntPtr)bufPtr;
_zlibStream.AvailOut = (uint)outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int)_zlibStream.AvailOut;
return errC;
}
}
}
private ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead) {
lock (syncLock) {
GCHandle outputBufferHndl = GCHandle.Alloc(outputBuffer, GCHandleType.Pinned);
try {
_zlibStream.NextOut = outputBufferHndl.AddrOfPinnedObject();
_zlibStream.AvailOut = (uint) outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int) _zlibStream.AvailOut;
return errC;
} finally {
outputBufferHndl.Free();
}
}
}