static int hb_jpeg_get_param( const HB_BYTE * buffer, HB_SIZE nBufferSize, int * piHeight, int * piWidth, int * piColorSpace, int * piBPC )
{
HB_SIZE nPos = 0;
HB_U16 tag;
HB_U16 height = 0;
HB_U16 width = 0;
HB_BYTE colorspace = 0;
HB_BYTE bpc = 0;
if( piHeight )
*piHeight = ( int ) height;
if( piWidth )
*piWidth = ( int ) width;
if( piColorSpace )
*piColorSpace = ( int ) colorspace;
if( piBPC )
*piBPC = ( int ) bpc;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
tag = HB_SWAP_UINT16( ( HB_U16 ) HB_GET_LE_UINT16( buffer + nPos ) ); nPos += 2;
/* SOI marker */
if( tag != 0xFFD8 )
return _JPEG_RET_INVALID;
for( ;; )
{
HB_U16 size;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
tag = HB_SWAP_UINT16( ( HB_U16 ) HB_GET_LE_UINT16( buffer + nPos ) ); nPos += 2;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
size = HB_SWAP_UINT16( ( HB_U16 ) HB_GET_LE_UINT16( buffer + nPos ) ); nPos += 2;
/* SOF markers */
if( tag == 0xFFC0 ||
tag == 0xFFC1 ||
tag == 0xFFC2 ||
tag == 0xFFC9 )
{
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
colorspace = *( buffer + nPos ); nPos += 1;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
height = HB_SWAP_UINT16( ( HB_U16 ) HB_GET_LE_UINT16( buffer + nPos ) ); nPos += 2;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
width = HB_SWAP_UINT16( ( HB_U16 ) HB_GET_LE_UINT16( buffer + nPos ) ); nPos += 2;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
bpc = *( buffer + nPos ); /* nPos += 1; */
break;
}
else if( ( tag | 0x00FF ) != 0xFFFF ) /* lost marker */
return _JPEG_RET_UNSUPPORTED;
nPos += size - 2;
if( nPos >= nBufferSize )
return _JPEG_RET_OVERRUN;
}
if( piHeight )
*piHeight = ( int ) height;
if( piWidth )
*piWidth = ( int ) width;
if( piBPC )
*piBPC = ( int ) bpc;
if( piColorSpace )
{
switch( colorspace )
{
case 1: *piColorSpace = _JPEG_CS_GRAY; break;
case 3: *piColorSpace = _JPEG_CS_RGB; break;
case 4: *piColorSpace = _JPEG_CS_CMYK; break;
}
}
return _JPEG_RET_OK;
}
int main( void )
{
char buf[ 16 ];
int n, i, l, f, iRet = 0;
printf( "\nStandard C types:\n" );
printf( "\t sizeof(void*)=%d\n", ( int ) sizeof( void * ) );
printf( "\t sizeof(char)=%d\n", ( int ) sizeof( char ) );
printf( "\t sizeof(short int)=%d\n", ( int ) sizeof( short int ) );
printf( "\t sizeof(int)=%d\n", ( int ) sizeof( int ) );
printf( "\t sizeof(long int)=%d\n", ( int ) sizeof( long int ) );
#if defined( HB_OS_WIN ) && ! defined( __GNUC__ )
printf( "\t sizeof(__int64)=%d\n", ( int ) sizeof( __int64 ) );
#else
printf( "\tsizeof(long long int)=%d\n", ( int ) sizeof( long long int ) );
#endif
printf( "\t sizeof(float)=%d\n", ( int ) sizeof( float ) );
printf( "\t sizeof(double)=%d\n", ( int ) sizeof( double ) );
printf( "\t sizeof(long double)=%d\n", ( int ) sizeof( long double ) );
printf( "\nHarbour types:\n" );
printf( "\t sizeof(HB_BYTE)=%d %s\n", ( int ) sizeof( HB_BYTE ), sizeof( HB_BYTE ) == 1 ? "OK" : "BAD" );
printf( "\t sizeof(HB_SHORT)=%d %s\n", ( int ) sizeof( HB_SHORT ), sizeof( HB_SHORT ) == 2 ? "OK" : "BAD" );
printf( "\t sizeof(HB_UINT)=%d %s\n", ( int ) sizeof( HB_UINT ), sizeof( HB_UINT ) == 4 || sizeof( HB_UINT ) == 8 ? "OK" : "BAD" );
printf( "\t sizeof(HB_LONG)=%d %s\n", ( int ) sizeof( HB_LONG ), sizeof( HB_LONG ) == 4 || sizeof( HB_LONG ) == 8 ? "OK" : "BAD" );
printf( "\tsizeof(HB_LONGLONG)=%d %s\n", ( int ) sizeof( HB_LONGLONG ), sizeof( HB_LONGLONG ) == 8 ? "OK" : "BAD" );
printf( "\t sizeof(double)=%d %s\n", ( int ) sizeof( double ), sizeof( double ) == 8 ? "OK" : "BAD" );
if( sizeof( HB_BYTE ) != 1 ||
sizeof( HB_SHORT ) != 2 ||
( sizeof( HB_LONG ) != 4 && sizeof( HB_LONG ) != 8 ) ||
sizeof( HB_LONGLONG ) != 8 ||
sizeof( double ) != 8 )
iRet = 1;
n = 0x31323334;
memcpy( buf, &n, sizeof( n ) );
buf[ sizeof( n ) ] = '\0';
i = atoi( buf );
#if defined( HB_PDP_ENDIAN )
l = 2143;
#elif defined( HB_BIG_ENDIAN )
l = 1234;
#else
l = 4321;
#endif
printf( "\nn=0x%x -> \"%s\" (%s endian) %s\n", n, buf,
i == 1234 ? "big" :
i == 2143 ? "pdp" :
i == 4321 ? "little" : "unknown",
i == l ? "OK" : "BAD" );
if( i != l )
iRet = 1;
buf[ 0 ] = 0x12;
buf[ 1 ] = 0x34;
buf[ 2 ] = 0x56;
buf[ 3 ] = 0x78;
buf[ 4 ] = 0x65;
i = ( HB_GET_BE_UINT32( buf ) == 0x12345678L &&
HB_GET_LE_UINT32( buf ) == 0x78563412L );
if( ! i )
iRet = 1;
printf( "byte order translation: %s\n", i ? "OK" : "BAD" );
for( l = 0; l < 4; l++ )
{
n = HB_GET_BE_UINT16( &buf[ l ] );
f = n == ( buf[ l ] * 256 + buf[ l + 1 ] ) ? 1 : 0;
if( ! f )
iRet = 1;
printf( "HB_GET_BE_UINT16(%x,%x) = %x -> %s\n", buf[ l ], buf[ l + 1 ], n,
f ? "OK" : "BAD" );
n = HB_GET_LE_UINT16( &buf[ l ] );
f = n == ( buf[ l ] + 256 * buf[ l + 1 ] ) ? 1 : 0;
if( ! f )
iRet = 1;
printf( "HB_GET_LE_UINT16(%x,%x) = %x -> %s\n", buf[ l ], buf[ l + 1 ], n,
f ? "OK" : "BAD" );
}
n = ( char ) 255;
printf( "n=%d -> (char) type is %ssigned\n", n, n < 0 ? "" : "un" );
if( iRet )
printf( "\nHarbour cannot be compiled !!!\n" );
else
printf( "\nBasic test is correct, try to compile Harbour.\n" );
return iRet;
}
