static public ffmpeg.net.AVFormatContext OpenInput(System.IO.Stream cStream, string sFormat)
{
net.AVFormatContext cRetVal = new net.AVFormatContext();
int nError = 0;
cRetVal._cStream = cStream;
//lock (helper._oSyncRootGlobal)
{
cRetVal._p = avformat_alloc_context();
cRetVal._st = (AVFormatContextInternal)Marshal.PtrToStructure(cRetVal._p, typeof(AVFormatContextInternal));
int nBufferSize = 32768;
cRetVal._pAVIOBuffer = av_malloc(nBufferSize + Constants.FF_INPUT_BUFFER_PADDING_SIZE);
cRetVal.fAVIOBufferRead = cRetVal.StreamRead;
cRetVal.fAVIOBufferSeek = cRetVal.StreamSeek;
cRetVal._st.pb = cRetVal._pAVIOContext = avio_alloc_context(cRetVal._pAVIOBuffer, nBufferSize, 0, NULL, Marshal.GetFunctionPointerForDelegate(cRetVal.fAVIOBufferRead), Marshal.GetFunctionPointerForDelegate(cRetVal.fAVIOBufferSeek), Marshal.GetFunctionPointerForDelegate(cRetVal.fAVIOBufferSeek));
Marshal.StructureToPtr(cRetVal._st, cRetVal._p, true);
IntPtr pFormat = NULL;
if (null != sFormat)
{
pFormat = av_find_input_format(sFormat);
}
if (0 != (nError = avformat_open_input(ref cRetVal._p, "buffer" + cStream.GetHashCode() + ".ts", pFormat, NULL)))
{
throw new Exception(helper.ErrorDescriptionGet(nError)); // Couldn't open file
}
}
cRetVal._bMarshalOutNeeds = true;
return(cRetVal);
}