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232 lines
7.1 KiB
232 lines
7.1 KiB
/*****************************************************************************
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* common.h: common definitions
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* Collection of useful common types and macros definitions
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*****************************************************************************
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* Copyright (C) 1998, 1999, 2000 VideoLAN
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* $Id: common.h,v 1.50 2001/11/25 22:52:21 gbazin Exp $
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*
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* Authors: Samuel Hocevar <sam@via.ecp.fr>
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* Vincent Seguin <seguin@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* required headers:
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* config.h
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*****************************************************************************/
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/*****************************************************************************
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* Basic types definitions
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*****************************************************************************/
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#include "int_types.h"
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typedef u8 byte_t;
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/* Boolean type */
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#ifdef BOOLEAN_T_IN_SYS_TYPES_H
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# include <sys/types.h>
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#elif defined(BOOLEAN_T_IN_PTHREAD_H)
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# include <pthread.h>
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#elif defined(BOOLEAN_T_IN_CTHREADS_H)
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# include <cthreads.h>
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#else
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typedef int boolean_t;
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#endif
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#ifdef SYS_GNU
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# define _MACH_I386_BOOLEAN_H_
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#endif
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/* ptrdiff_t definition */
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# include <malloc.h>
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# ifndef _PTRDIFF_T
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# define _PTRDIFF_T
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/* Not portable in a 64-bit environment. */
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typedef int ptrdiff_t;
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# endif
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#endif
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/* Counter for statistics and profiling */
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typedef unsigned long count_t;
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/* DCT elements types */
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typedef s16 dctelem_t;
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/* Video buffer types */
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typedef u8 yuv_data_t;
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/*****************************************************************************
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* Classes declaration
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*****************************************************************************/
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/* Plugins */
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struct plugin_bank_s;
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struct plugin_info_s;
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typedef struct plugin_bank_s * p_plugin_bank_t;
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typedef struct plugin_info_s * p_plugin_info_t;
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/* Plugins */
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struct playlist_s;
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struct playlist_item_s;
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struct module_s;
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typedef struct playlist_s * p_playlist_t;
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typedef struct playlist_item_s * p_playlist_item_t;
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/* Interface */
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struct intf_thread_s;
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struct intf_sys_s;
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struct intf_console_s;
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struct intf_msg_s;
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struct intf_channel_s;
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typedef struct intf_thread_s * p_intf_thread_t;
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typedef struct intf_sys_s * p_intf_sys_t;
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typedef struct intf_console_s * p_intf_console_t;
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typedef struct intf_msg_s * p_intf_msg_t;
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typedef struct intf_channel_s * p_intf_channel_t;
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/* Input */
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struct input_thread_s;
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struct input_channel_s;
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struct input_cfg_s;
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typedef struct input_thread_s * p_input_thread_t;
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typedef struct input_channel_s * p_input_channel_t;
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typedef struct input_cfg_s * p_input_cfg_t;
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/* Audio */
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struct aout_thread_s;
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struct aout_sys_s;
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typedef struct aout_thread_s * p_aout_thread_t;
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typedef struct aout_sys_s * p_aout_sys_t;
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/* Video */
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struct vout_thread_s;
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struct vout_font_s;
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struct vout_sys_s;
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struct vdec_thread_s;
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struct vpar_thread_s;
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struct video_parser_s;
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typedef struct vout_thread_s * p_vout_thread_t;
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typedef struct vout_font_s * p_vout_font_t;
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typedef struct vout_sys_s * p_vout_sys_t;
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typedef struct vdec_thread_s * p_vdec_thread_t;
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typedef struct vpar_thread_s * p_vpar_thread_t;
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typedef struct video_parser_s * p_video_parser_t;
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/* Misc */
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struct macroblock_s;
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struct data_packet_s;
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struct es_descriptor_s;
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struct pgrm_descriptor_s;
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struct pes_packet_s;
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struct input_area_s;
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struct bit_stream_s;
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/* Decoders */
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struct decoder_config_s;
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struct decoder_fifo_s;
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/*****************************************************************************
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* Macros and inline functions
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*****************************************************************************/
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#ifdef NTOHL_IN_SYS_PARAM_H
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# include <sys/param.h>
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#elif defined(WIN32)
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# include "bytes_swap.h"
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#else
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# include <netinet/in.h>
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#endif
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/* CEIL: division with round to nearest greater integer */
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#define CEIL(n, d) ( ((n) / (d)) + ( ((n) % (d)) ? 1 : 0) )
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/* PAD: PAD(n, d) = CEIL(n ,d) * d */
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#define PAD(n, d) ( ((n) % (d)) ? ((((n) / (d)) + 1) * (d)) : (n) )
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/* MAX and MIN: self explanatory */
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#ifndef MAX
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# define MAX(a, b) ( ((a) > (b)) ? (a) : (b) )
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#endif
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#ifndef MIN
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# define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
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#endif
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/* MSB (big endian)/LSB (little endian) conversions - network order is always
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* MSB, and should be used for both network communications and files. Note that
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* byte orders other than little and big endians are not supported, but only
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* the VAX seems to have such exotic properties - note that these 'functions'
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* needs <netinet/in.h> or the local equivalent. */
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/* FIXME: hton64 should be declared as an extern inline function to avoid
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* border effects (see byteorder.h) */
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#if WORDS_BIGENDIAN
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# define hton16 htons
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# define hton32 htonl
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# define hton64(i) ( i )
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# define ntoh16 ntohs
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# define ntoh32 ntohl
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# define ntoh64(i) ( i )
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#else
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# define hton16 htons
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# define hton32 htonl
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# define hton64(i) ( ((u64)(htonl((i) & 0xffffffff)) << 32) | htonl(((i) >> 32) & 0xffffffff ) )
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# define ntoh16 ntohs
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# define ntoh32 ntohl
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# define ntoh64 hton64
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#endif
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/* Macros with automatic casts */
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#define U64_AT(p) ( ntoh64 ( *( (u64 *)(p) ) ) )
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#define U32_AT(p) ( ntoh32 ( *( (u32 *)(p) ) ) )
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#define U16_AT(p) ( ntoh16 ( *( (u16 *)(p) ) ) )
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/* Alignment of critical static data structures */
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#ifdef ATTRIBUTE_ALIGNED_MAX
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# define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
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#else
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# define ATTR_ALIGN(align)
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#endif
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/* Alignment of critical dynamic data structure */
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#ifdef HAVE_MEMALIGN
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/* Some systems have memalign() but no declaration for it */
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void * memalign( size_t align, size_t size );
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#else
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# ifdef HAVE_VALLOC
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/* That's like using a hammer to kill a fly, but eh... */
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# include <unistd.h>
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# define memalign(align,size) valloc(size)
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# else
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/* Assume malloc alignment is sufficient */
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# define memalign(align,size) malloc(size)
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# endif
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#endif
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#define I64C(x) x##LL
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/* The win32 specific stuff was getting really big so it has been moved */
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#if defined( WIN32 )
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# include "common_win32.h"
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#endif
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