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vlc/include/vlc_common.h
Sam Hocevar 77c667f409 * ALL: libvlc now compiles and run under WinCE. I haven't ported any modules 
yet so there's little that can be tested, but threads work at least.
  * ./src/extras/libc.c: renamed strndup.c to libc.c because a few other
    libc functions were added (strcasecmp, atof, getenv...).
2002-11-10 23:41:54 +00:00

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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 1.36 2002/11/10 23:41:53 sam 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 vlc headers
*****************************************************************************/
#if defined( __BORLANDC__ )
# undef PACKAGE
#endif
#include "config.h"
#if defined( __BORLANDC__ )
# undef HAVE_VARIADIC_MACROS
# undef HAVE_STDINT_H
#endif
#include "vlc_config.h"
#include "modules_inner.h"
/*****************************************************************************
* 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
*****************************************************************************/
#if defined( HAVE_STDINT_H )
# include <stdint.h>
#elif defined( HAVE_INTTYPES_H )
# include <inttypes.h>
#elif defined( SYS_CYGWIN )
# include <sys/types.h>
/* Cygwin only defines half of these... */
typedef u_int8_t uint8_t;
typedef u_int16_t uint16_t;
typedef u_int32_t uint32_t;
typedef u_int64_t uint64_t;
#else
/* Fallback types (very x86-centric, sorry) */
typedef unsigned char uint8_t;
typedef signed char int8_t;
typedef unsigned short uint16_t;
typedef signed short int16_t;
typedef unsigned int uint32_t;
typedef signed int int32_t;
# if defined( _MSC_VER ) || ( defined( WIN32 ) && !defined( __MINGW32__ ) )
typedef unsigned __int64 uint64_t;
typedef signed __int64 int64_t;
# else
typedef unsigned long long uint64_t;
typedef signed long long int64_t;
# endif
#endif
typedef uint8_t 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 int16_t dctelem_t;
/* Video buffer types */
typedef uint8_t yuv_data_t;
/* Audio volume */
typedef uint16_t audio_volume_t;
/*****************************************************************************
* Old types definitions
*****************************************************************************
* We still provide these types because most of the VLC code uses them
* instead of the C9x types. They should be removed when the transition is
* complete (probably in 10 years).
*****************************************************************************/
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;
/*****************************************************************************
* mtime_t: high precision date or time interval
*****************************************************************************
* Store a high precision date or time interval. The maximum precision is the
* microsecond, and a 64 bits integer is used to avoid overflows (maximum
* time interval is then 292271 years, which should be long enough for any
* video). Dates are stored as microseconds since a common date (usually the
* epoch). Note that date and time intervals can be manipulated using regular
* arithmetic operators, and that no special functions are required.
*****************************************************************************/
typedef int64_t mtime_t;
/*****************************************************************************
* The vlc_fourcc_t type.
*****************************************************************************
* See http://www.webartz.com/fourcc/ for a very detailed list.
*****************************************************************************/
typedef uint32_t vlc_fourcc_t;
#ifdef WORDS_BIGENDIAN
# define VLC_FOURCC( a, b, c, d ) \
( ((uint32_t)d) | ( ((uint32_t)c) << 8 ) \
| ( ((uint32_t)b) << 16 ) | ( ((uint32_t)a) << 24 ) )
# define VLC_TWOCC( a, b ) \
( (uint16_t)(b) | ( (uint16_t)(a) << 8 ) )
#else
# define VLC_FOURCC( a, b, c, d ) \
( ((uint32_t)a) | ( ((uint32_t)b) << 8 ) \
| ( ((uint32_t)c) << 16 ) | ( ((uint32_t)d) << 24 ) )
# define VLC_TWOCC( a, b ) \
( (uint16_t)(a) | ( (uint16_t)(b) << 8 ) )
#endif
/*****************************************************************************
* Classes declaration
*****************************************************************************/
/* Internal types */
typedef struct libvlc_t libvlc_t;
typedef struct vlc_t vlc_t;
typedef struct vlc_list_t vlc_list_t;
typedef struct vlc_object_t vlc_object_t;
typedef struct variable_t variable_t;
/* Messages */
typedef struct msg_bank_t msg_bank_t;
typedef struct msg_subscription_t msg_subscription_t;
/* Playlist */
typedef struct playlist_t playlist_t;
typedef struct playlist_item_t playlist_item_t;
/* Modules */
typedef struct module_bank_t module_bank_t;
typedef struct module_t module_t;
typedef struct module_config_t module_config_t;
typedef struct module_symbols_t module_symbols_t;
/* Interface */
typedef struct intf_thread_t intf_thread_t;
typedef struct intf_sys_t intf_sys_t;
typedef struct intf_console_t intf_console_t;
typedef struct intf_msg_t intf_msg_t;
typedef struct intf_channel_t intf_channel_t;
/* Input */
typedef struct input_thread_t input_thread_t;
typedef struct input_channel_t input_channel_t;
typedef struct input_area_t input_area_t;
typedef struct input_buffers_t input_buffers_t;
typedef struct input_socket_t input_socket_t;
typedef struct input_info_t input_info_t;
typedef struct input_info_category_t input_info_category_t;
typedef struct access_sys_t access_sys_t;
typedef struct demux_sys_t demux_sys_t;
typedef struct es_descriptor_t es_descriptor_t;
typedef struct es_sys_t es_sys_t;
typedef struct pgrm_descriptor_t pgrm_descriptor_t;
typedef struct pgrm_sys_t pgrm_sys_t;
typedef struct stream_descriptor_t stream_descriptor_t;
typedef struct stream_sys_t stream_sys_t;
/* Audio */
typedef struct aout_instance_t aout_instance_t;
typedef struct aout_sys_t aout_sys_t;
typedef struct aout_fifo_t aout_fifo_t;
typedef struct aout_input_t aout_input_t;
typedef struct aout_buffer_t aout_buffer_t;
typedef struct audio_sample_format_t audio_sample_format_t;
typedef struct audio_date_t audio_date_t;
/* Video */
typedef struct vout_thread_t vout_thread_t;
typedef struct vout_font_t vout_font_t;
typedef struct vout_sys_t vout_sys_t;
typedef struct chroma_sys_t chroma_sys_t;
typedef struct picture_t picture_t;
typedef struct picture_sys_t picture_sys_t;
typedef struct picture_heap_t picture_heap_t;
typedef struct subpicture_t subpicture_t;
typedef struct subpicture_sys_t subpicture_sys_t;
/* Stream output */
typedef struct sout_instance_t sout_instance_t;
typedef struct sout_fifo_t sout_fifo_t;
/* Decoders */
typedef struct decoder_fifo_t decoder_fifo_t;
/* Misc */
typedef struct data_packet_t data_packet_t;
typedef struct data_buffer_t data_buffer_t;
typedef struct stream_position_t stream_position_t;
typedef struct stream_ctrl_t stream_ctrl_t;
typedef struct pes_packet_t pes_packet_t;
typedef struct bit_stream_t bit_stream_t;
typedef struct network_socket_t network_socket_t;
typedef struct iso639_lang_t iso639_lang_t;
/*****************************************************************************
* Variable callbacks
*****************************************************************************/
typedef int ( * vlc_callback_t ) ( vlc_object_t *, /* variable's object */
char const *, /* variable name */
vlc_value_t, /* old value */
vlc_value_t, /* new value */
void * ); /* callback data */
/*****************************************************************************
* Plug-in stuff
*****************************************************************************/
#ifndef __PLUGIN__
# define VLC_EXPORT( type, name, args ) type name args
#else
# define VLC_EXPORT( type, name, args ) struct _u_n_u_s_e_d_
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"
/*****************************************************************************
* 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; \
vlc_thread_t thread_id; \
\
/* Object access lock */ \
vlc_mutex_t object_lock; \
vlc_cond_t object_wait; \
\
/* Object properties */ \
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 */ \
volatile vlc_bool_t b_attached; /* set by the object */ \
\
/* Object variables */ \
vlc_mutex_t var_lock; \
int i_vars; \
variable_t * p_vars; \
\
/* Stuff related to the libvlc structure */ \
libvlc_t * p_libvlc; /* root of all evil */ \
vlc_t * p_vlc; /* (root of all evil) - 1 */ \
\
volatile int i_refcount; /* usage count */ \
vlc_object_t * p_parent; /* our parent */ \
vlc_object_t ** pp_children; /* our children */ \
volatile int i_children; \
\
/* Private data */ \
void * p_private; \
\
/* Just a reminder so that people don't cast garbage */ \
int be_sure_to_add_VLC_COMMON_MEMBERS_to_struct; \
/* VLC_OBJECT: attempt at doing a clever cast */
#define 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) /* 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
/* Dynamic array handling: realloc array, move data, increment position */
#define INSERT_ELEM( p_ar, i_oldsize, i_pos, elem ) \
do \
{ \
if( i_oldsize ) \
{ \
(p_ar) = realloc( p_ar, ((i_oldsize) + 1) * sizeof( *(p_ar) ) ); \
} \
else \
{ \
(p_ar) = malloc( ((i_oldsize) + 1) * sizeof( *(p_ar) ) ); \
} \
memmove( (p_ar) + (i_pos) + 1, \
(p_ar) + (i_pos), \
((i_oldsize) - (i_pos)) * sizeof( *(p_ar) ) ); \
(p_ar)[i_pos] = elem; \
(i_oldsize)++; \
} \
while( 0 )
#define REMOVE_ELEM( p_ar, i_oldsize, i_pos ) \
do \
{ \
memmove( (p_ar) + (i_pos), \
(p_ar) + (i_pos) + 1, \
((i_oldsize) - (i_pos) - 1) * sizeof( *(p_ar) ) ); \
if( i_oldsize > 1 ) \
{ \
(p_ar) = realloc( p_ar, ((i_oldsize) - 1) * sizeof( *(p_ar) ) ); \
} \
else \
{ \
free( p_ar ); \
(p_ar) = NULL; \
} \
(i_oldsize)--; \
} \
while( 0 )
/* 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. */
static inline uint16_t U16_AT( void * _p )
{
uint8_t * p = (uint8_t *)_p;
return ( ((uint16_t)p[0] << 8) | p[1] );
}
static inline uint32_t U32_AT( void * _p )
{
uint8_t * p = (uint8_t *)_p;
return ( ((uint32_t)p[0] << 24) | ((uint32_t)p[1] << 16)
| ((uint32_t)p[2] << 8) | p[3] );
}
static inline uint64_t U64_AT( void * _p )
{
uint8_t * p = (uint8_t *)_p;
return ( ((uint64_t)p[0] << 56) | ((uint64_t)p[1] << 48)
| ((uint64_t)p[2] << 40) | ((uint64_t)p[3] << 32)
| ((uint64_t)p[4] << 24) | ((uint64_t)p[5] << 16)
| ((uint64_t)p[6] << 8) | p[7] );
}
#if WORDS_BIGENDIAN
# define hton16(i) ( i )
# define hton32(i) ( i )
# define hton64(i) ( i )
# define ntoh16(i) ( i )
# define ntoh32(i) ( i )
# define ntoh64(i) ( i )
#else
# define hton16(i) U16_AT(&i)
# define hton32(i) U32_AT(&i)
# define hton64(i) U64_AT(&i)
# define ntoh16(i) U16_AT(&i)
# define ntoh32(i) U32_AT(&i)
# define ntoh64(i) U64_AT(&i)
#endif
/* 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
/* strdup/strndup (defined in src/extras/libc.c) */
#ifndef HAVE_STRDUP
char * strdup( const char *s );
#endif
#ifndef HAVE_STRNDUP
char * strndup( const char *s, size_t n );
#endif
/* atof (defined in src/extras/libc.c) */
#ifndef HAVE_ATOF
double atof( const char *nptr );
#endif
/* getenv - always returns NULL */
#ifndef HAVE_GETENV
char *getenv( const char *name );
#endif
/* strncasecmp/strcasecmp (defined in src/extras/libc.c) */
#ifndef HAVE_STRCASECMP
# ifdef HAVE_STRICMP
# define strcasecmp stricmp
# else
int strcasecmp( const char *s1, const char *s2 );
# endif
#endif
#ifndef HAVE_STRNCASECMP
# ifdef HAVE_STRNICMP
# define strncasecmp strnicmp
# else
int strncasecmp( const char *s1, const char *s2, size_t n );
# endif
#endif
/* Format type specifiers for 64 bits numbers */
#if !defined(WIN32)
# define I64Fd "%lld"
# define I64Fi "%lli"
# define I64Fo "%llo"
# define I64Fu "%llu"
# define I64Fx "%llx"
# define I64FX "%llX"
#else
# define I64Fd "%I64d"
# define I64Fi "%I64i"
# define I64Fo "%I64o"
# define I64Fu "%I64u"
# define I64Fx "%I64x"
# define I64FX "%I64X"
#endif /* defined(WIN32) */
/* 64 bits integer constant suffix */
#if !defined(WIN32)
# define I64C(x) x##LL
#else
# define I64C(x) x##i64
#endif /* defined(WIN32) */
#ifdef WIN32
/* win32, cl and icl support */
# if defined( _MSC_VER ) || !defined( __MINGW32__ )
# define __attribute__(x)
# define __inline__ __inline
# 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)
# 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
/* These two are not defined in mingw32 (bug?) */
# ifndef snprintf
# define snprintf _snprintf
# endif
# ifndef vsnprintf
# define vsnprintf _vsnprintf
# endif
#endif
/* lseek (defined in src/extras/libc.c) */
#ifndef HAVE_ATOF
off_t lseek( int fildes, off_t offset, int whence );
#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
*****************************************************************************/
#if defined( ENABLE_NLS ) \
&& ( defined(HAVE_GETTEXT) || defined(HAVE_INCLUDED_GETTEXT) )
# 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( NEED_GNOMESUPPORT_H )
# define _(String) (String)
# define N_(String) (String)
#endif
/*****************************************************************************
* Additional vlc stuff
*****************************************************************************/
#include "vlc_symbols.h"
#include "os_specific.h"
#include "vlc_messages.h"
#include "variables.h"
#include "vlc_objects.h"
#include "vlc_threads_funcs.h"
#include "mtime.h"
#include "modules.h"
#include "main.h"
#include "configuration.h"
#if defined( __BORLANDC__ )
# undef PACKAGE
# define PACKAGE
#endif
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