size_t wxStreamBuffer::Read(void *buffer, size_t size)
{
wxASSERT_MSG( buffer, _T("Warning: Null pointer is about to be used") );
/* Clear buffer first */
memset(buffer, 0x00, size);
// lasterror is reset before all new IO calls
if ( m_stream )
m_stream->Reset();
size_t readBytes;
if ( !HasBuffer() )
{
wxInputStream *inStream = GetInputStream();
wxCHECK_MSG( inStream, 0, _T("should have a stream in wxStreamBuffer") );
readBytes = inStream->OnSysRead(buffer, size);
}
else // we have a buffer, use it
{
size_t orig_size = size;
while ( size > 0 )
{
size_t left = GetDataLeft();
// if the requested number of bytes if greater than the buffer
// size, read data in chunks
if ( size > left )
{
GetFromBuffer(buffer, left);
size -= left;
buffer = (char *)buffer + left;
if ( !FillBuffer() )
{
SetError(wxSTREAM_EOF);
break;
}
}
else // otherwise just do it in one gulp
{
GetFromBuffer(buffer, size);
size = 0;
}
}
readBytes = orig_size - size;
}
if ( m_stream )
m_stream->m_lastcount = readBytes;
return readBytes;
}
void Poglos(void)
{
int value = (iChannel0RightIn + iChannel0LeftIn) / 2;
Buffor[Buffor_Pozycja] = value;
iChannel0LeftOut = value / 2 + GetFromBuffer(6000) / 4 + GetFromBuffer(5000) / 8 + GetFromBuffer(4000) / 8;
iChannel0RightOut = iChannel0LeftOut;
Buffor_Pozycja = (Buffor_Pozycja + 1) % BUFFOR_SIZE;
}
char wxStreamBuffer::GetChar()
{
wxInputStream *inStream = GetInputStream();
wxCHECK_MSG( inStream, 0, _T("should have a stream in wxStreamBuffer") );
char c;
if ( !HasBuffer() )
{
inStream->OnSysRead(&c, sizeof(c));
}
else
{
if ( !GetDataLeft() )
{
SetError(wxSTREAM_READ_ERROR);
c = 0;
}
else
{
GetFromBuffer(&c, sizeof(c));
m_stream->m_lastcount = 1;
}
}
return c;
}
void Echo(void)
{
int value = (iChannel0RightIn + iChannel0LeftIn) / 2;
Buffor[Buffor_Pozycja] = value;
iChannel0LeftOut = value / 2 + GetFromBuffer(1) / 4;
iChannel0RightOut = iChannel0LeftOut;
Buffor_Pozycja = (Buffor_Pozycja + 1) % BUFFOR_SIZE;
}
static void
k_read(char *buff, int size)
{
int i=0;
_Cli();
while( !BufferIsEmpty() && i< size ) {
buff[i] = GetFromBuffer() ;
i++;
}
_Sti();
}
char wxStreamBuffer::Peek()
{
wxCHECK_MSG( m_stream && HasBuffer(), 0,
_T("should have the stream and the buffer in wxStreamBuffer") );
if ( !GetDataLeft() )
{
SetError(wxSTREAM_READ_ERROR);
return 0;
}
char c;
GetFromBuffer(&c, sizeof(c));
m_buffer_pos--;
return c;
}
