private void ReceiveThreadEntry()
{
try
{
OnFrameReceivedCallback callback = new OnFrameReceivedCallback(OnFrameReceived);
byte[] readBuffer = new byte[maxBufferReadSize];
int isJpegStartFound = -1;
int actualData = 0;
int bufferOffset = 0;
int savedOffset = 0;
//Парсер http-ответа
var fileCount = 1;
while (true)
{
int readen = ReadFromInet(readBuffer, actualData, maxBufferReadSize);
if (readen > 0)
{
File.AppendAllText($@"Files\read.txt", $@"try read {maxBufferReadSize - actualData} from {actualData} of max {maxBufferReadSize} {Environment.NewLine}");
actualData += readen;
File.AppendAllText($@"Files\read.txt", $@"read {readen} - actualData - {actualData} bufferOffset - {bufferOffset} {Environment.NewLine}");
if (actualData - savedOffset > maxBufferlogSize)
{
byte[] readed = new byte[maxBufferlogSize];
Array.Copy(readBuffer, savedOffset, readed, 0, maxBufferlogSize);
File.WriteAllBytes($@"Files\Streams\1Stream{fileCount}.txt", readed);
++fileCount;
savedOffset += maxBufferlogSize;
}
if (actualData >= maxBufferReadSize)
{
actualData -= bufferOffset;
File.AppendAllText($@"Files\read.txt", $@"ovf actualData - {actualData} bufferOffset - {bufferOffset} {Environment.NewLine}");
//Application.Current.Dispatcher.BeginInvoke(callback, new object[] { readed, true });
Array.Copy(readBuffer, bufferOffset, readBuffer, 0, actualData);
bufferOffset = 0;
File.AppendAllText($@"Files\read.txt", $@"ovf new actualData - {actualData} bufferOffset - {bufferOffset} {Environment.NewLine}");
}
}
if (isJpegStartFound == -1)
{
for (; bufferOffset + 6 <= actualData; bufferOffset++)
{
if (
readBuffer[bufferOffset] == '\r' &&
readBuffer[bufferOffset + 1] == '\n' &&
readBuffer[bufferOffset + 2] == '\r' /*0xFF*/ &&
readBuffer[bufferOffset + 3] == '\n' /*0xD8*/)
{
isJpegStartFound = bufferOffset;
break;
}
else if (readBuffer[bufferOffset] == 0x49 && /*I*/
readBuffer[bufferOffset + 1] == 0x2D && /*-*/
readBuffer[bufferOffset + 2] == 0x66 && /*f*/
readBuffer[bufferOffset + 3] == 0x72 && /*r*/
readBuffer[bufferOffset + 4] == 0x61 && /*a*/
readBuffer[bufferOffset + 5] == 0x6D && /*m*/
readBuffer[bufferOffset + 6] == 0x65) /*e*/
{
isIFrame = true;
}
}
}
else
{
for (; bufferOffset + 3 <= actualData; bufferOffset++)
{
if (
readBuffer[bufferOffset] == 0x2D && /*-*/
readBuffer[bufferOffset + 1] == 0x2D && /*-*/
readBuffer[bufferOffset + 2] == 0x6D && /*m*/
readBuffer[bufferOffset + 3] == 0x79) /*y*/
{
int frameSize = bufferOffset - isJpegStartFound;
if (frameSize > 0)
{
byte[] frame = new byte[frameSize];
Array.Copy(readBuffer, isJpegStartFound, frame, 0, frameSize);
Application.Current.Dispatcher.BeginInvoke(callback, new object[] { frame, isIFrame ? true : false });
isIFrame = false;
}
isJpegStartFound = -1;
bufferOffset++;
break;
}
else if (
readBuffer[bufferOffset] == '\r' &&
readBuffer[bufferOffset + 1] == '\n' &&
readBuffer[bufferOffset + 2] == '\r' /*0xFF*/ &&
readBuffer[bufferOffset + 3] == '\n' /*0xD8*/)
{
isJpegStartFound = bufferOffset;
}
}
}
}
}
catch (ThreadAbortException ex)
{
MessageBox.Show(ex.ToString());
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void WorkerThreadEntry()
{
try
{
OnFrameReceivedCallback callback = new OnFrameReceivedCallback(OnFrameReceived);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream streamResponse = webResponse.GetResponseStream();
int maxBufferSize = 32 * 1024 * 1024;
byte[] readBuffer = new byte[maxBufferSize];
int isJpegStartFound = -1;
int actualData = 0;
int bufferOffset = 0;
//Парсер http-ответа
while (true)
{
int readen = streamResponse.Read(readBuffer, actualData, maxBufferSize - actualData);
if (readen == 0)
{
return;
}
actualData += readen;
if (actualData == maxBufferSize)
{
actualData -= bufferOffset;
Array.Copy(readBuffer, bufferOffset, readBuffer, 0, actualData);
bufferOffset = 0;
}
if (isJpegStartFound == -1)
{
for (; bufferOffset + 2 < actualData; bufferOffset++)
{
if (readBuffer[bufferOffset] == '\r' && readBuffer[bufferOffset + 1] == '\n' && readBuffer[bufferOffset + 2] == 0xFF && readBuffer[bufferOffset + 3] == 0xD8)
{
isJpegStartFound = bufferOffset;
break;
}
}
}
else
{
for (; bufferOffset + 1 < actualData; bufferOffset++)
{
if (readBuffer[bufferOffset] == 0xFF && readBuffer[bufferOffset + 1] == 0xD9)
{
int frameSize = bufferOffset - isJpegStartFound + 2;
byte[] frame = new byte[frameSize];
Array.Copy(readBuffer, isJpegStartFound, frame, 0, frameSize);
Application.Current.Dispatcher.BeginInvoke(callback, new object[] { frame });
isJpegStartFound = -1;
bufferOffset++;
break;
}
else if (readBuffer[bufferOffset] == 0xFF && readBuffer[bufferOffset + 1] == 0xD8)
{
isJpegStartFound = bufferOffset;
}
}
}
}
}
catch (ThreadAbortException)
{
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
