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vlc/include/vlc_common.h

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/*****************************************************************************
* common.h: common definitions
* Collection of useful common types and macros definitions
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
* $Id: vlc_common.h,v 1.4 2002/06/02 13:38:03 gbazin Exp $
*
* Authors: Samuel Hocevar <sam@via.ecp.fr>
* Vincent Seguin <seguin@via.ecp.fr>
* Gildas Bazin <gbazin@netcourrier.com>
*
* 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.
*
* 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.
*****************************************************************************/
/*****************************************************************************
* Required system headers
*****************************************************************************/
#ifdef HAVE_STRING_H
# include <string.h> /* strerror() */
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
/*****************************************************************************
* Basic types definitions
*****************************************************************************/
#ifdef HAVE_STDINT_H
# include <stdint.h>
typedef uint8_t u8;
typedef int8_t s8;
typedef uint16_t u16;
typedef int16_t s16;
typedef uint32_t u32;
typedef int32_t s32;
typedef uint64_t u64;
typedef int64_t s64;
#else
typedef unsigned char u8;
typedef signed char s8;
typedef unsigned short u16;
typedef signed short s16;
typedef unsigned int u32;
typedef signed int s32;
# if defined( _MSC_VER ) || ( defined( WIN32 ) && !defined( __MINGW32__ ) )
typedef unsigned __int64 u64;
typedef signed __int64 s64;
# else
typedef unsigned long long u64;
typedef signed long long s64;
# endif
#endif
typedef u8 byte_t;
/* 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
#if defined( WIN32 )
typedef int ssize_t;
#endif
/* Counter for statistics and profiling */
typedef unsigned long count_t;
/* DCT elements types */
typedef s16 dctelem_t;
/* Video buffer types */
typedef u8 yuv_data_t;
/*****************************************************************************
* mtime_t: high precision date or time interval
*****************************************************************************
* Store an high precision date or time interval. The maximum precision is the
* micro-second, and a 64 bits integer is used to avoid any overflow (maximum
* time interval is then 292271 years, which should be long enough for any
* video). Date are stored as a time interval since a common date.
* Note that date and time intervals can be manipulated using regular
* arithmetic operators, and that no special functions are required.
*****************************************************************************/
typedef s64 mtime_t;
/*****************************************************************************
* Classes declaration
*****************************************************************************/
/* Messages */
VLC_DECLARE_STRUCT(msg_bank)
VLC_DECLARE_STRUCT(msg_subscription)
/* Playlist */
VLC_DECLARE_STRUCT(playlist)
VLC_DECLARE_STRUCT(playlist_item)
/* Modules */
VLC_DECLARE_STRUCT(module_bank)
VLC_DECLARE_STRUCT(module)
VLC_DECLARE_STRUCT(module_config)
VLC_DECLARE_STRUCT(module_symbols)
VLC_DECLARE_STRUCT(module_functions)
/* Interface */
VLC_DECLARE_STRUCT(intf_thread)
VLC_DECLARE_STRUCT(intf_sys)
VLC_DECLARE_STRUCT(intf_console)
VLC_DECLARE_STRUCT(intf_msg)
VLC_DECLARE_STRUCT(intf_channel)
/* Input */
VLC_DECLARE_STRUCT(input_thread)
VLC_DECLARE_STRUCT(input_channel)
VLC_DECLARE_STRUCT(input_cfg)
VLC_DECLARE_STRUCT(input_area)
VLC_DECLARE_STRUCT(input_buffers)
VLC_DECLARE_STRUCT(input_socket)
/* Audio */
VLC_DECLARE_STRUCT(aout_thread)
VLC_DECLARE_STRUCT(aout_sys)
VLC_DECLARE_STRUCT(aout_fifo)
/* Video */
VLC_DECLARE_STRUCT(vout_thread)
VLC_DECLARE_STRUCT(vout_font)
VLC_DECLARE_STRUCT(vout_sys)
VLC_DECLARE_STRUCT(chroma_sys)
VLC_DECLARE_STRUCT(picture)
VLC_DECLARE_STRUCT(picture_sys)
VLC_DECLARE_STRUCT(picture_heap)
VLC_DECLARE_STRUCT(subpicture)
VLC_DECLARE_STRUCT(subpicture_sys)
/* Decoders */
VLC_DECLARE_STRUCT(decoder_fifo)
/* Misc */
VLC_DECLARE_STRUCT(macroblock)
VLC_DECLARE_STRUCT(data_packet)
VLC_DECLARE_STRUCT(data_buffer)
VLC_DECLARE_STRUCT(downmix)
VLC_DECLARE_STRUCT(imdct)
VLC_DECLARE_STRUCT(complex)
VLC_DECLARE_STRUCT(dm_par)
VLC_DECLARE_STRUCT(es_descriptor)
VLC_DECLARE_STRUCT(pgrm_descriptor)
VLC_DECLARE_STRUCT(stream_descriptor)
VLC_DECLARE_STRUCT(stream_position)
VLC_DECLARE_STRUCT(stream_ctrl)
VLC_DECLARE_STRUCT(pes_packet)
VLC_DECLARE_STRUCT(bit_stream)
VLC_DECLARE_STRUCT(network_socket)
VLC_DECLARE_STRUCT(iso639_lang)
/*****************************************************************************
* Plug-in stuff
*****************************************************************************/
#ifndef __PLUGIN__
# define VLC_EXPORT( type, name, args ) type name args;
#else
# define VLC_EXPORT( type, name, args ) ;
extern module_symbols_t* p_symbols;
#endif
/*****************************************************************************
* OS-specific headers and thread types
*****************************************************************************/
#if defined( WIN32 )
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
#include "vlc_threads.h"
/*****************************************************************************
* Compiler-specific workarounds
*****************************************************************************/
#if defined( __BORLANDC__ )
# undef HAVE_VARIADIC_MACROS
#endif
/*****************************************************************************
* Common structure members
*****************************************************************************/
/* VLC_COMMON_MEMBERS : members common to all basic vlc objects */
#define VLC_COMMON_MEMBERS \
int i_object_id; \
int i_object_type; \
char *psz_object_type; \
char *psz_object_name; \
\
/* Thread properties, if any */ \
vlc_bool_t b_thread; \
int i_thread; \
vlc_thread_t thread_id; \
vlc_mutex_t thread_lock; \
vlc_cond_t thread_wait; \
\
volatile vlc_bool_t b_error; /* set by the object */ \
volatile vlc_bool_t b_die; /* set by the outside */ \
volatile vlc_bool_t b_dead; /* set by the object */ \
\
vlc_t * p_vlc; /* root of all evil */ \
\
volatile int i_refcount; \
vlc_object_t ** pp_parents; /* our parents */ \
volatile int i_parents; \
vlc_object_t ** pp_children; /* our children */ \
volatile int i_children; \
\
/* Just a reminder so that people don't cast garbage */ \
int be_sure_to_add_VLC_COMMON_MEMBERS_to_struct; \
/* The real vlc_object_t type. Yes, it's that simple :-) */
struct vlc_object_s
{
VLC_COMMON_MEMBERS
};
/* CAST_TO_VLC_OBJECT: attempt at doing a clever cast */
#define CAST_TO_VLC_OBJECT( x ) \
((vlc_object_t *)(x))+0*(x)->be_sure_to_add_VLC_COMMON_MEMBERS_to_struct
/*****************************************************************************
* Macros and inline functions
*****************************************************************************/
#ifdef NTOHL_IN_SYS_PARAM_H
# include <sys/param.h>
#elif defined(WIN32)
/* Swap bytes in 16 bit value. */
# define __bswap_constant_16(x) \
((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
# if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_16(x) \
(__extension__ \
({ register unsigned short int __v; \
if (__builtin_constant_p (x)) \
__v = __bswap_constant_16 (x); \
else \
__asm__ __volatile__ ("rorw $8, %w0" \
: "=r" (__v) \
: "0" ((unsigned short int) (x)) \
: "cc"); \
__v; }))
# else
/* This is better than nothing. */
# define __bswap_16(x) __bswap_constant_16 (x)
# endif
/* Swap bytes in 32 bit value. */
# define __bswap_constant_32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
# if defined __GNUC__ && __GNUC__ >= 2
/* To swap the bytes in a word the i486 processors and up provide the
`bswap' opcode. On i386 we have to use three instructions. */
# if !defined __i486__ && !defined __pentium__ && !defined __pentiumpro__
# define __bswap_32(x) \
(__extension__ \
({ register unsigned int __v; \
if (__builtin_constant_p (x)) \
__v = __bswap_constant_32 (x); \
else \
__asm__ __volatile__ ("rorw $8, %w0;" \
"rorl $16, %0;" \
"rorw $8, %w0" \
: "=r" (__v) \
: "0" ((unsigned int) (x)) \
: "cc"); \
__v; }))
# else
# define __bswap_32(x) \
(__extension__ \
({ register unsigned int __v; \
if (__builtin_constant_p (x)) \
__v = __bswap_constant_32 (x); \
else \
__asm__ __volatile__ ("bswap %0" \
: "=r" (__v) \
: "0" ((unsigned int) (x))); \
__v; }))
# endif
# else
# define __bswap_32(x) __bswap_constant_32 (x)
# endif
# if defined __GNUC__ && __GNUC__ >= 2
/* Swap bytes in 64 bit value. */
# define __bswap_constant_64(x) \
((((x) & 0xff00000000000000ull) >> 56) \
| (((x) & 0x00ff000000000000ull) >> 40) \
| (((x) & 0x0000ff0000000000ull) >> 24) \
| (((x) & 0x000000ff00000000ull) >> 8) \
| (((x) & 0x00000000ff000000ull) << 8) \
| (((x) & 0x0000000000ff0000ull) << 24) \
| (((x) & 0x000000000000ff00ull) << 40) \
| (((x) & 0x00000000000000ffull) << 56))
# define __bswap_64(x) \
(__extension__ \
({ union { __extension__ unsigned long long int __ll; \
unsigned long int __l[2]; } __w, __r; \
if (__builtin_constant_p (x)) \
__r.__ll = __bswap_constant_64 (x); \
else \
{ \
__w.__ll = (x); \
__r.__l[0] = __bswap_32 (__w.__l[1]); \
__r.__l[1] = __bswap_32 (__w.__l[0]); \
} \
__r.__ll; }))
# else
# define __bswap_64(i) \
(u64)((__bswap_32((i) & 0xffffffff) << 32) | \
__bswap_32(((i) >> 32) & 0xffffffff ))
# endif
#else /* NTOHL_IN_SYS_PARAM_H || WIN32 */
# include <netinet/in.h>
#endif /* NTOHL_IN_SYS_PARAM_H || WIN32 */
/* CEIL: division with round to nearest greater integer */
#define CEIL(n, d) ( ((n) / (d)) + ( ((n) % (d)) ? 1 : 0) )
/* PAD: PAD(n, d) = CEIL(n ,d) * d */
#define PAD(n, d) ( ((n) % (d)) ? ((((n) / (d)) + 1) * (d)) : (n) )
/* __MAX and __MIN: self explanatory */
#ifndef __MAX
# define __MAX(a, b) ( ((a) > (b)) ? (a) : (b) )
#endif
#ifndef __MIN
# define __MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
#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. */
#if !defined( WIN32 )
#if WORDS_BIGENDIAN
# define hton16 htons
# define hton32 htonl
# define hton64(i) ( i )
# define ntoh16 ntohs
# define ntoh32 ntohl
# define ntoh64(i) ( i )
#else
# define hton16 htons
# define hton32 htonl
static inline u64 __hton64( u64 i )
{
return ((u64)(htonl((i) & 0xffffffff)) << 32)
| htonl(((i) >> 32) & 0xffffffff );
}
# define hton64(i) __hton64( i )
# define ntoh16 ntohs
# define ntoh32 ntohl
# define ntoh64 hton64
#endif
#endif /* !defined( WIN32 ) */
/* Macros with automatic casts */
#define U64_AT(p) ( ntoh64 ( *( (u64 *)(p) ) ) )
#define U32_AT(p) ( ntoh32 ( *( (u32 *)(p) ) ) )
#define U16_AT(p) ( ntoh16 ( *( (u16 *)(p) ) ) )
/* Alignment of critical static data structures */
#ifdef ATTRIBUTE_ALIGNED_MAX
# define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
#else
# define ATTR_ALIGN(align)
#endif
/* Alignment of critical dynamic data structure
*
* Not all platforms support memalign so we provide a vlc_memalign wrapper
* void *vlc_memalign( size_t align, size_t size, void **pp_orig )
* *pp_orig is the pointer that has to be freed afterwards.
*/
#if 0
#ifdef HAVE_POSIX_MEMALIGN
# define vlc_memalign(align,size,pp_orig) \
( !posix_memalign( pp_orig, align, size ) ? *(pp_orig) : NULL )
#endif
#endif
#ifdef HAVE_MEMALIGN
/* Some systems have memalign() but no declaration for it */
void * memalign( size_t align, size_t size );
# define vlc_memalign(pp_orig,align,size) \
( *(pp_orig) = memalign( align, size ) )
#else /* We don't have any choice but to align manually */
# define vlc_memalign(pp_orig,align,size) \
(( *(pp_orig) = malloc( size + align - 1 )) \
? (void *)( (((unsigned long)*(pp_orig)) + (unsigned long)(align-1) ) \
& (~(unsigned long)(align-1)) ) \
: NULL )
#endif
#define I64C(x) x##LL
#if defined( WIN32 )
/* The ntoh* and hton* bytes swapping functions are provided by winsock
* but for conveniency and speed reasons it is better to implement them
* ourselves. ( several plugins use them and it is too much hassle to link
* winsock with each of them ;-)
*/
# ifdef WORDS_BIGENDIAN
# define ntoh32(x) (x)
# define ntoh16(x) (x)
# define ntoh64(x) (x)
# define hton32(x) (x)
# define hton16(x) (x)
# define hton64(x) (x)
# else
# define ntoh32(x) __bswap_32 (x)
# define ntoh16(x) __bswap_16 (x)
# define ntoh64(x) __bswap_32 (x)
# define hton32(x) __bswap_32 (x)
# define hton16(x) __bswap_16 (x)
# define hton64(x) __bswap_64 (x)
# endif
/* win32, cl and icl support */
# if defined( _MSC_VER ) || !defined( __MINGW32__ )
# define __attribute__(x)
# define __inline__ __inline
# define strncasecmp strnicmp
# define strcasecmp stricmp
# define S_IFBLK 0x3000 /* Block */
# define S_ISBLK(m) (0)
# define S_ISCHR(m) (0)
# define S_ISFIFO(m) (((m)&_S_IFMT) == _S_IFIFO)
# define S_ISREG(m) (((m)&_S_IFMT) == _S_IFREG)
# undef I64C
# define I64C(x) x##i64
# endif
/* several type definitions */
# if defined( __MINGW32__ )
# if !defined( _OFF_T_ )
typedef long long _off_t;
typedef _off_t off_t;
# define _OFF_T_
# else
# define off_t long long
# endif
# endif
# if defined( _MSC_VER )
# if !defined( _OFF_T_DEFINED )
typedef __int64 off_t;
# define _OFF_T_DEFINED
# else
# define off_t __int64
# endif
# endif
# if defined( __BORLANDC__ )
# undef off_t
# define off_t unsigned __int64
# endif
# ifndef O_NONBLOCK
# define O_NONBLOCK 0
# endif
# ifndef snprintf
# define snprintf _snprintf /* snprintf not defined in mingw32 (bug?) */
# endif
#endif
/*****************************************************************************
* CPU capabilities
*****************************************************************************/
#define CPU_CAPABILITY_NONE 0
#define CPU_CAPABILITY_486 (1<<0)
#define CPU_CAPABILITY_586 (1<<1)
#define CPU_CAPABILITY_PPRO (1<<2)
#define CPU_CAPABILITY_MMX (1<<3)
#define CPU_CAPABILITY_3DNOW (1<<4)
#define CPU_CAPABILITY_MMXEXT (1<<5)
#define CPU_CAPABILITY_SSE (1<<6)
#define CPU_CAPABILITY_ALTIVEC (1<<16)
#define CPU_CAPABILITY_FPU (1<<31)
/*****************************************************************************
* I18n stuff
*****************************************************************************/
#ifndef PACKAGE /* Borland C++ uses this ! */
#define PACKAGE VLC_PACKAGE
#endif
#define VERSION VLC_VERSION
#if defined( ENABLE_NLS ) && defined ( HAVE_GETTEXT ) && !defined( __BORLANDC__ ) && !defined( MODULE_NAME_IS_gnome )
# include <libintl.h>
# undef _
# define _(String) dgettext (PACKAGE, String)
# ifdef gettext_noop
# define N_(String) gettext_noop (String)
# else
# define N_(String) (String)
# endif
#elif !defined( MODULE_NAME_IS_gnome )
# define _(String) (String)
# define N_(String) (String)
#endif
/*****************************************************************************
* Plug-in stuff
*****************************************************************************/
#include "vlc_symbols.h"
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