sint32 AVIReadTunnelStream::BeginStreaming(VDPosition lStart, VDPosition lEnd, long lRate) {
LONG lStart32 = (LONG)lStart;
LONG lEnd32 = (LONG)lEnd;
if (lStart32 != lStart)
lStart32 = lStart < 0 ? (LONG)0x80000000 : (LONG)0x7FFFFFFF;
if (lEnd32 != lEnd)
lEnd32 = lEnd < 0 ? (LONG)0x80000000 : (LONG)0x7FFFFFFF;
return AVIStreamBeginStreaming(pas, lStart32, lEnd32, lRate);
}
bool CCamAvi::Initialize (char* filename)
{
long hr;
AVISTREAMINFO info;
m_init=false;
m_pos=0;
AVIFileInit ();
hr=AVIFileOpen (&m_paf, filename, OF_READ, NULL);
if (hr!=0) return false;
hr=AVIFileGetStream (m_paf, &m_pas, streamtypeVIDEO, 0);
if (hr!=0) return false;
hr= AVIStreamInfo (m_pas, &info, sizeof (info));
if (hr!=0) return false;
hr=sizeof (m_bi);
hr= AVIStreamReadFormat (m_pas, 0, &m_bi, &hr);
if (hr!=0) return false;
if (m_bi.bmiHeader.biCompression!=0)
{
// find decompressor
m_hic=ICOpen (ICTYPE_VIDEO, info.fccHandler ,ICMODE_DECOMPRESS);
if (m_hic==0) return false;
}
m_data=new unsigned char[m_bi.bmiHeader.biSizeImage];
AVISTREAMINFO a;
AVIStreamInfo (m_pas, &a, sizeof (a));
m_length=a.dwLength;
hr=AVIStreamBeginStreaming (m_pas, 0, 100, 1000);
m_init=true;
m_FrameRate = (double)a.dwRate / a.dwScale;
m_pos=AVIStreamStart (m_pas);
m_data=new BYTE[m_bi.bmiHeader.biSizeImage];
if (m_bi.bmiHeader.biCompression!=0)
{
hr=ICDecompressGetFormat (m_hic, &m_bi, &m_bi_out);
}
else m_bi_out=m_bi;
m_frame.Create (m_bi_out.bmiHeader.biWidth, m_bi_out.bmiHeader.biHeight, m_bi_out.bmiHeader.biBitCount);
return true;
}