* Collection of useful common types and macros definitions
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
+ * $Id: common.h,v 1.25 2001/01/18 05:13:22 sam Exp $
*
- * Authors:
+ * Authors: Samuel Hocevar <sam@via.ecp.fr>
+ * Vincent Seguin <seguin@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
typedef u8 byte_t;
/* Boolean type */
+#ifdef BOOLEAN_T_IN_SYS_TYPES_H
+# include <sys/types.h>
+#else
typedef int boolean_t;
+#endif
#ifdef SYS_GNU
-#define _MACH_I386_BOOLEAN_H_
+# define _MACH_I386_BOOLEAN_H_
+#endif
+
+/* ptrdiff_t definition */
+#ifdef HAVE_STDDEF_H
+# include <stddef.h>
+#else
+# include <malloc.h>
+# ifndef _PTRDIFF_T
+# define _PTRDIFF_T
+/* Not portable in a 64-bit environment. */
+typedef int ptrdiff_t;
+# endif
#endif
/* 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
*****************************************************************************/
+/* Plugins */
+struct plugin_bank_s;
+struct plugin_info_s;
+
+typedef struct plugin_bank_s * p_plugin_bank_t;
+typedef struct plugin_info_s * p_plugin_info_t;
+
+/* Playlist */
+struct playlist_s;
+
+typedef struct playlist_s * p_playlist_t;
+
/* Interface */
struct intf_thread_s;
struct intf_sys_s;
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
*****************************************************************************/
+#ifdef NTOHL_IN_SYS_PARAM_H
+# include <sys/param.h>
+#else
+# include <netinet/in.h>
+#endif
+
/* CEIL: division with round to nearest greater integer */
#define CEIL(n, d) ( ((n) / (d)) + ( ((n) % (d)) ? 1 : 0) )
#define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
#endif
-/* MSB (big endian)/LSB (little endian) convertions - network order is always
+/*
+ * 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
* the VAX seems to have such exotic properties - note that these 'functions'
* needs <netinet/in.h> or the local equivalent. */
-/* FIXME??: hton64 should be declared as an extern inline function to avoid border
- * effects (see byteorder.h) */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+/* FIXME: hton64 should be declared as an extern inline function to avoid
+ * border effects (see byteorder.h) */
+#if WORDS_BIGENDIAN
#define hton16 htons
#define hton32 htonl
-#define hton64(i) ( ((u64)(htonl((i) & 0xffffffff)) << 32) | htonl(((i) >> 32) & 0xffffffff ) )
+#define hton64(i) ( i )
#define ntoh16 ntohs
#define ntoh32 ntohl
-#define ntoh64 hton64
-#elif __BYTE_ORDER == __BIG_ENDIAN
+#define ntoh64(i) ( i )
+#else
#define hton16 htons
#define hton32 htonl
-#define hton64(i) ( i )
+#define hton64(i) ( ((u64)(htonl((i) & 0xffffffff)) << 32) | htonl(((i) >> 32) & 0xffffffff ) )
#define ntoh16 ntohs
#define ntoh32 ntohl
-#define ntoh64(i) ( i )
-#else
-/* XXX??: cause a compilation error */
+#define ntoh64 hton64
#endif
-/* Macros used by input to access the TS buffer */
-#define U32_AT(p) ( ntohl ( *( (u32 *)(p) ) ) )
+/* Macros with automatic casts */
+#define U32_AT(p) ( swab32 ( *( (u32 *)(p) ) ) )
#define U16_AT(p) ( ntohs ( *( (u16 *)(p) ) ) )
+
projects / vlc / blobdiff