* Collection of useful common types and macros definitions
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
- * $Id: common.h,v 1.22 2001/01/09 21:03:47 sam Exp $
+ * $Id: common.h,v 1.25 2001/01/18 05:13:22 sam Exp $
*
* Authors: Samuel Hocevar <sam@via.ecp.fr>
* Vincent Seguin <seguin@via.ecp.fr>
/* Counter for statistics and profiling */
typedef unsigned long count_t;
+/* DCT elements types */
+#ifndef VDEC_DFT
+typedef short dctelem_t;
+#else
+typedef int dctelem_t;
+#endif
+
/*****************************************************************************
* Classes declaration
*****************************************************************************/
typedef struct vpar_thread_s * p_vpar_thread_t;
typedef struct video_parser_s * p_video_parser_t;
+/* Misc */
+struct macroblock_s;
+
/*****************************************************************************
* Macros and inline functions
*****************************************************************************/
#define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
#endif
+/*
+ * This is stolen from the livid source who stole it from the kernel
+ */
+
+#if defined(SYS_BEOS)
+# define swab32(x) B_BENDIAN_TO_HOST_INT32(x)
+#else
+# ifdef WORDS_BIG_ENDIAN
+# define swab32(x) (x)
+# else
+# if defined (HAVE_X86_BSWAP)
+static __inline__ const u32 __i386_swab32( u32 x )
+{
+ __asm__("bswap %0" : "=r" (x) : "0" (x));
+ return x;
+}
+# define swab32(x) __i386_swab32(x)
+# else
+# define swab32(x) \
+ ( ( (u32)(((u8*)&x)[0]) << 24 ) | ( (u32)(((u8*)&x)[1]) << 16 ) |\
+ ( (u32)(((u8*)&x)[2]) << 8 ) | ( (u32)(((u8*)&x)[3])) )
+# endif
+# endif
+#endif
+
/* MSB (big endian)/LSB (little endian) conversions - network order is always
* MSB, and should be used for both network communications and files. Note that
* byte orders other than little and big endians are not supported, but only
#endif
/* Macros with automatic casts */
-#define U32_AT(p) ( ntohl ( *( (u32 *)(p) ) ) )
+#define U32_AT(p) ( swab32 ( *( (u32 *)(p) ) ) )
#define U16_AT(p) ( ntohs ( *( (u16 *)(p) ) ) )
+