[streaming] named pipe in Windows

[montez]

Hi,

we have an Apollo MPEG-2 encoder that only has windows driver.
So we implemented a windows named pipe into vls code.

Apollo writes in the pipe (e.g. \\.\pipe\vls) and
vls (compiled for windows using msys+mingw) reads it and streams to 
network.

We had success !!! :-)   :-) :-)

It is enough to configure the input.cfg

BEGIN "1"    Name     = "mytest"
 FileName = "\\.\pipe\vls"
 Type     = "Mpeg1-PS"
END


In file.h we added:

private:
 HANDLE m_hHd;     // <----- new !!!

The main changes in vls source code were made in file.cpp:

#ifdef _WIN32
#include <windows.h>
#endif

...
...
...

void C_File::Open(const C_String& strMode, int iPermissions)
{
#ifdef _WIN32
 char *strPipeName;

 if((strPipeName = strstr(m_strPath.GetString(),"\\\\.\\pipe\\")) != NULL)
 {
   #define BUFFER_IN_LEN    1000
   #define BUFFER_OUT_LEN 1000

   if ( (m_hHd = CreateNamedPipe(
         strPipeName;,
         PIPE_ACCESS_INBOUND,
         PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
         1,                                 BUFFER_OUT_LEN,
         BUFFER_IN_LEN,
         30000,                     // time-out
         NULL
       )) == INVALID_HANDLE_VALUE )
   {
     printf("Error creating pipe\n" );
   }

   printf("Waiting client to connect with %s (buffer in=%d out=%d\n",
           strPipeName;, BUFFER_IN_LEN, BUFFER_OUT_LEN );

   if( ConnectNamedPipe( m_hHd, NULL ) == FALSE )
     printf("Error connecting pipe\n" );
   return;
 }
 else
#endif
    m_hFd = fopen(m_strPath.GetString(), strMode.GetString());

...
...
...

int C_File::Read(byte* pBuff, int iSize)
{
 ASSERT(pBuff);
 ASSERT(iSize > 0);

 int iRc = 0;

#ifdef _WIN32
 if(m_hHd) // pipe?
 {
   DWORD cbRead;

   do
   {
     if( !ReadFile( m_hHd, pBuff + iRc, iSize - iRc, &cbRead, NULL) )
     {
        printf("Error reading pipe\n");
        return FILE_EOF;
     }

     iRc += cbRead;

     if(iRc < iSize)
        Sleep(0);

   } while(iRc < iSize);
 }
 else
#endif
 {
   ASSERT(m_hFd );      // Make sure that the file has been opened
   iRc = fread(pBuff, sizeof(byte), iSize, m_hFd);
 }

...
...
...

int C_File::Seek(s64 iOffset, int iStartPos)
{
 int iRc;

#ifdef _WIN32
 if(m_hHd) // pipe?
   iRc = 0;
 else
#endif
 {
   ASSERT(m_hFd);
   iRc = fseek(m_hFd, iOffset, iStartPos);
 }

...
...
...

I hope the report of our experience helps somebody.

              Carlos Montez



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.videolan.org/pipermail/streaming/attachments/20030207/9ac60b04/attachment.htm