X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=include%2Fvlc_demux.h;h=e7a39da157c48b290f7111d814864dbe14503581;hb=588723d7c65ccdb0fa5cc39b3cae132176637300;hp=1d706e40f4ec273ae4e3a88b4c6022f8dee71e61;hpb=fe087a38282e93addb25fa9598393e40ea233b09;p=vlc diff --git a/include/vlc_demux.h b/include/vlc_demux.h index 1d706e40f4..e7a39da157 100644 --- a/include/vlc_demux.h +++ b/include/vlc_demux.h @@ -1,7 +1,7 @@ /***************************************************************************** - * vlc_demux.h + * vlc_demux.h: Demuxer descriptor, queries and methods ***************************************************************************** - * Copyright (C) 1999-2004 the VideoLAN team + * Copyright (C) 1999-2005 the VideoLAN team * $Id$ * * Authors: Laurent Aimar @@ -18,12 +18,16 @@ * * 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. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ #ifndef _VLC_DEMUX_H #define _VLC_DEMUX_H 1 +#include +#include +#include + /** * \defgroup demux Demux * @{ @@ -45,7 +49,7 @@ struct demux_t stream_t *s; /* NULL in case of a access+demux in one */ /* es output */ - es_out_t *out; /* ou p_es_out */ + es_out_t *out; /* our p_es_out */ /* set by demuxer */ int (*pf_demux) ( demux_t * ); /* demux one frame only */ @@ -64,6 +68,16 @@ struct demux_t demux_sys_t *p_sys; }; + +/* demux_meta_t is returned by "meta reader" module to the demuxer */ +struct demux_meta_t +{ + vlc_meta_t *p_meta; /**< meta data */ + + int i_attachments; /**< number of attachments */ + input_attachment_t **attachments; /**< array of attachments */ +}; + enum demux_query_e { /* I. Common queries to access_demux and demux */ @@ -77,8 +91,8 @@ enum demux_query_e DEMUX_SET_TIME, /* arg1= int64_t res=can fail */ /* TITLE_INFO only if more than 1 title or 1 chapter */ - DEMUX_GET_TITLE_INFO, /* arg1=input_title_t*** arg2=int* can fail */ - + DEMUX_GET_TITLE_INFO, /* arg1=input_title_t*** arg2=int* + arg3=int*pi_title_offset(0), arg4=int*pi_seekpoint_offset(0) can fail */ /* TITLE/SEEKPOINT, only when TITLE_INFO succeed */ DEMUX_SET_TITLE, /* arg1= int can fail */ DEMUX_SET_SEEKPOINT, /* arg1= int can fail */ @@ -90,48 +104,140 @@ enum demux_query_e DEMUX_SET_GROUP, /* arg1= int can fail */ /* Ask the demux to demux until the given date at the next pf_demux call - * but not more (and not less, at the precision avaiable of course). + * but not more (and not less, at the precision available of course). * XXX: not mandatory (except for subtitle demux) but I will help a lot * for multi-input */ DEMUX_SET_NEXT_DEMUX_TIME, /* arg1= int64_t * can fail */ /* FPS for correct subtitles handling */ - DEMUX_GET_FPS, /* arg1= float * res=can fail */ + DEMUX_GET_FPS, /* arg1= double * res=can fail */ + /* Meta data */ DEMUX_GET_META, /* arg1= vlc_meta_t ** res=can fail */ + DEMUX_HAS_UNSUPPORTED_META, /* arg1= bool * res can fail */ + /* Attachments */ + DEMUX_GET_ATTACHMENTS, /* arg1=input_attachment_t***, int* res=can fail */ /* II. Specific access_demux queries */ - DEMUX_CAN_PAUSE, /* arg1= vlc_bool_t* cannot fail */ - DEMUX_CAN_CONTROL_PACE, /* arg1= vlc_bool_t* cannot fail */ + DEMUX_CAN_PAUSE, /* arg1= bool* can fail (assume false)*/ + DEMUX_SET_PAUSE_STATE, /* arg1= bool can fail */ + DEMUX_GET_PTS_DELAY, /* arg1= int64_t* cannot fail */ - DEMUX_SET_PAUSE_STATE, /* arg1= vlc_bool_t can fail */ + + /* DEMUX_CAN_CONTROL_PACE returns true (*pb_pace) if we can read the + * data at our pace */ + DEMUX_CAN_CONTROL_PACE, /* arg1= bool*pb_pace can fail (assume false) */ + + /* DEMUX_CAN_CONTROL_RATE is called only if DEMUX_CAN_CONTROL_PACE has returned false. + * *pb_rate should be true when the rate can be changed (using DEMUX_SET_RATE) + * *pb_ts_rescale should be true when the timestamps (pts/dts/pcr) have to be rescaled */ + DEMUX_CAN_CONTROL_RATE, /* arg1= bool*pb_rate arg2= bool*pb_ts_rescale can fail(assume false) */ + /* DEMUX_SET_RATE is called only if DEMUX_CAN_CONTROL_RATE has returned true. + * It should return the value really used in *pi_rate */ + DEMUX_SET_RATE, /* arg1= int*pi_rate can fail */ + + DEMUX_CAN_SEEK, /* arg1= bool* can fail (assume false)*/ }; -/* stream_t *s could be null and then it mean a access+demux in one */ -#define demux2_New( a, b, c, d, e, f,g ) __demux2_New(VLC_OBJECT(a),b,c,d,e,f,g) -VLC_EXPORT( demux_t *, __demux2_New, ( vlc_object_t *p_obj, char *psz_access, char *psz_demux, char *psz_path, stream_t *s, es_out_t *out, vlc_bool_t ) ); -VLC_EXPORT( void, demux2_Delete, ( demux_t * ) ); -VLC_EXPORT( int, demux2_vaControlHelper, ( stream_t *, int64_t i_start, int64_t i_end, int i_bitrate, int i_align, int i_query, va_list args ) ); +VLC_EXPORT( int, demux_vaControlHelper, ( stream_t *, int64_t i_start, int64_t i_end, int i_bitrate, int i_align, int i_query, va_list args ) ); + +/************************************************************************* + * Miscellaneous helpers for demuxers + *************************************************************************/ -static inline int demux2_Demux( demux_t *p_demux ) +static inline bool demux_IsPathExtension( demux_t *p_demux, const char *psz_extension ) { - return p_demux->pf_demux( p_demux ); + const char *psz_ext = strrchr ( p_demux->psz_path, '.' ); + if( !psz_ext || strcasecmp( psz_ext, psz_extension ) ) + return false; + return true; } -static inline int demux2_vaControl( demux_t *p_demux, int i_query, va_list args ) + +static inline bool demux_IsForced( demux_t *p_demux, const char *psz_name ) { - return p_demux->pf_control( p_demux, i_query, args ); + if( !p_demux->psz_demux || strcmp( p_demux->psz_demux, psz_name ) ) + return false; + return true; } -static inline int demux2_Control( demux_t *p_demux, int i_query, ... ) -{ - va_list args; - int i_result; - va_start( args, i_query ); - i_result = demux2_vaControl( p_demux, i_query, args ); - va_end( args ); - return i_result; -} +#define DEMUX_INIT_COMMON() do { \ + 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 ) ); } while(0) + +#define STANDARD_DEMUX_INIT_MSG( msg ) do { \ + DEMUX_INIT_COMMON(); \ + msg_Dbg( p_demux, msg ); } while(0) + +#define DEMUX_BY_EXTENSION( ext ) \ + demux_t *p_demux = (demux_t *)p_this; \ + if( !demux_IsPathExtension( p_demux, ext ) ) \ + return VLC_EGENERIC; \ + DEMUX_INIT_COMMON(); + +#define DEMUX_BY_EXTENSION_MSG( ext, msg ) \ + demux_t *p_demux = (demux_t *)p_this; \ + if( !demux_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( !demux_IsPathExtension( p_demux, ext ) && !demux_IsForced( p_demux, module ) ) \ + return VLC_EGENERIC; \ + DEMUX_INIT_COMMON(); + +#define DEMUX_BY_EXTENSION_OR_FORCED_MSG( ext, module, msg ) \ + demux_t *p_demux = (demux_t *)p_this; \ + if( !demux_IsPathExtension( p_demux, ext ) && !demux_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 POKE( peek, stuff, size ) (strncasecmp( (const 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_release( 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_release( location ); + /** * @} */