+#define STANDARD_DEMUX_INIT \
+ p_demux->pf_control = Control; \
+ p_demux->pf_demux = Demux; \
+ MALLOC_ERR( p_demux->p_sys, demux_sys_t ); \
+ memset( p_demux->p_sys, 0, sizeof( demux_sys_t ) );
+
+#define STANDARD_DEMUX_INIT_MSG( msg ) \
+ p_demux->pf_control = Control; \
+ p_demux->pf_demux = Demux; \
+ MALLOC_ERR( p_demux->p_sys, demux_sys_t ); \
+ memset( p_demux->p_sys, 0, sizeof( demux_sys_t ) ); \
+ msg_Dbg( p_demux, msg ); \
+
+#define DEMUX_BY_EXTENSION( ext ) \
+ demux_t *p_demux = (demux_t *)p_this; \
+ if( !demux2_IsPathExtension( p_demux, ext ) ) \
+ return VLC_EGENERIC; \
+ STANDARD_DEMUX_INIT;
+
+#define DEMUX_BY_EXTENSION_MSG( ext, msg ) \
+ demux_t *p_demux = (demux_t *)p_this; \
+ if( !demux2_IsPathExtension( p_demux, ext ) ) \
+ return VLC_EGENERIC; \
+ STANDARD_DEMUX_INIT_MSG( msg );
+
+#define DEMUX_BY_EXTENSION_OR_FORCED( ext, module ) \
+ demux_t *p_demux = (demux_t *)p_this; \
+ if( !demux2_IsPathExtension( p_demux, ext ) && !demux2_IsForced( p_demux, module ) ) \
+ return VLC_EGENERIC; \
+ STANDARD_DEMUX_INIT;
+
+#define DEMUX_BY_EXTENSION_OR_FORCED_MSG( ext, module, msg ) \
+ demux_t *p_demux = (demux_t *)p_this; \
+ if( !demux2_IsPathExtension( p_demux, ext ) && !demux2_IsForced( p_demux, module ) ) \
+ return VLC_EGENERIC; \
+ STANDARD_DEMUX_INIT_MSG( msg );
+
+#define CHECK_PEEK( zepeek, size ) \
+ if( stream_Peek( p_demux->s , &zepeek, size ) < size ){ \
+ msg_Dbg( p_demux, "not enough data" ); return VLC_EGENERIC; }
+
+#define CHECK_PEEK_GOTO( zepeek, size ) \
+ if( stream_Peek( p_demux->s , &zepeek, size ) < size ) { \
+ msg_Dbg( p_demux, "not enough data" ); goto error; }
+
+#define CHECK_DISCARD_PEEK( size ) { uint8_t *p_peek; \
+ if( stream_Peek( p_demux->s , &p_peek, size ) < size ) return VLC_EGENERIC;}
+
+#define POKE( peek, stuff, size ) (strncasecmp( (char *)peek, stuff, size )==0)
+
+#define COMMON_INIT_PACKETIZER( location ) \
+ location = vlc_object_create( p_demux, VLC_OBJECT_PACKETIZER ); \
+ location->pf_decode_audio = 0; \
+ location->pf_decode_video = 0; \
+ location->pf_decode_sub = 0; \
+ location->pf_packetize = 0; \
+
+#define INIT_APACKETIZER( location, a,b,c,d ) \
+ COMMON_INIT_PACKETIZER(location ); \
+ es_format_Init( &location->fmt_in, AUDIO_ES, \
+ VLC_FOURCC( a, b, c, d ) );
+
+#define INIT_VPACKETIZER( location, a,b,c,d ) \
+ COMMON_INIT_PACKETIZER(location ); \
+ es_format_Init( &location->fmt_in, VIDEO_ES, \
+ VLC_FOURCC( a, b, c, d ) );
+
+/* BEWARE ! This can lead to memory leaks ! */
+#define LOAD_PACKETIZER_OR_FAIL( location, msg ) \
+ location->p_module = \
+ module_Need( location, "packetizer", NULL, 0 ); \
+ if( location->p_module == NULL ) \
+ { \
+ vlc_object_destroy( location ); \
+ msg_Err( p_demux, "cannot find packetizer for " # msg ); \
+ free( p_sys ); \
+ return VLC_EGENERIC; \
+ }
+
+#define DESTROY_PACKETIZER( location ) \
+ if( location->p_module ) module_Unneed( location, location->p_module ); \
+ vlc_object_destroy( location );
+