* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
-#ifndef _VLC_DEMUX_H
-#define _VLC_DEMUX_H 1
+#ifndef VLC_DEMUX_H
+#define VLC_DEMUX_H 1
+
+/**
+ * \file
+ * This files defines functions and structures used by demux objects in vlc
+ */
+
+#include <vlc_es.h>
+#include <vlc_stream.h>
+#include <vlc_es_out.h>
/**
* \defgroup demux Demux
/* eg informative but needed (we can have access+demux) */
char *psz_access;
char *psz_demux;
- char *psz_path;
+ char *psz_location;
+ char *psz_file;
/* input stream */
stream_t *s; /* NULL in case of a access+demux in one */
int i_seekpoint; /* idem, start from 0 */
} info;
demux_sys_t *p_sys;
+
+ /* Weak link to parent input */
+ input_thread_t *p_input;
};
+
+/* demux_meta_t is returned by "meta reader" module to the demuxer */
+typedef struct demux_meta_t
+{
+ VLC_COMMON_MEMBERS
+ demux_t *p_demux; /** FIXME: use stream_t instead? */
+ input_item_t *p_item; /***< the input item that is being read */
+
+ vlc_meta_t *p_meta; /**< meta data */
+
+ int i_attachments; /**< number of attachments */
+ input_attachment_t **attachments; /**< array of attachments */
+} demux_meta_t;
+
enum demux_query_e
{
/* I. Common queries to access_demux and demux */
/* POSITION double between 0.0 and 1.0 */
DEMUX_GET_POSITION, /* arg1= double * res= */
- DEMUX_SET_POSITION, /* arg1= double res=can fail */
+ DEMUX_SET_POSITION, /* arg1= double arg2= bool b_precise res=can fail */
/* LENGTH/TIME in microsecond, 0 if unknown */
DEMUX_GET_LENGTH, /* arg1= int64_t * res= */
DEMUX_GET_TIME, /* arg1= int64_t * res= */
- DEMUX_SET_TIME, /* arg1= int64_t res=can fail */
+ DEMUX_SET_TIME, /* arg1= int64_t arg2= bool b_precise 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 */
* reading everything (you should not use this to call es_out_Control)
* if you don't know what to do with it, just IGNORE it, it is safe(r)
* -1 means all group, 0 default group (first es added) */
- DEMUX_SET_GROUP, /* arg1= int can fail */
+ DEMUX_SET_GROUP, /* arg1= int, arg2=const vlc_list_t * 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 */
+
+ /* RECORD you are ensured that it is never called twice with the same state
+ * you should accept it only if the stream can be recorded without
+ * any modification or header addition. */
+ DEMUX_CAN_RECORD, /* arg1=bool* res=can fail(assume false) */
+ DEMUX_SET_RECORD_STATE, /* arg1=bool 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 */
+ /* PAUSE you are ensured that it is never called twice with the same state */
+ DEMUX_CAN_PAUSE = 0x1000, /* 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 */
-};
-/* 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 ) );
+ /* 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) */
-static inline int demux2_Demux( demux_t *p_demux )
-{
- return p_demux->pf_demux( p_demux );
-}
-static inline int demux2_vaControl( demux_t *p_demux, int i_query, va_list args )
-{
- return p_demux->pf_control( p_demux, i_query, args );
-}
-static inline int demux2_Control( demux_t *p_demux, int i_query, ... )
-{
- va_list args;
- int i_result;
+ /* 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 */
- va_start( args, i_query );
- i_result = demux2_vaControl( p_demux, i_query, args );
- va_end( args );
- return i_result;
-}
+ DEMUX_CAN_SEEK, /* arg1= bool* can fail (assume false)*/
+};
+
+VLC_EXPORT( int, demux_vaControlHelper, ( stream_t *, int64_t i_start, int64_t i_end, int64_t i_bitrate, int i_align, int i_query, va_list args ) );
/*************************************************************************
* Miscellaneous helpers for demuxers
*************************************************************************/
-static inline vlc_bool_t isExtension( demux_t *p_demux, char *psz_requested )
+LIBVLC_USED
+static inline bool demux_IsPathExtension( demux_t *p_demux, const char *psz_extension )
{
- char *psz_ext;
- psz_ext = strrchr ( p_demux->psz_path, '.' );
- if( !psz_ext || strcmp( psz_ext, psz_requested ) )
- return VLC_FALSE;
- return VLC_TRUE;
+ if( !p_demux->psz_file )
+ return false;
+
+ const char *psz_ext = strrchr ( p_demux->psz_file, '.' );
+ if( !psz_ext || strcasecmp( psz_ext, psz_extension ) )
+ return false;
+ return true;
}
-static inline vlc_bool_t isDemux( demux_t *p_demux, char *psz_requested )
+
+LIBVLC_USED
+static inline bool demux_IsForced( demux_t *p_demux, const char *psz_name )
{
- if( !p_demux->psz_demux || strcmp( p_demux->psz_demux, psz_requested ) )
- return VLC_FALSE;
- return VLC_TRUE;
+ if( !p_demux->psz_demux || strcmp( p_demux->psz_demux, psz_name ) )
+ return false;
+ return true;
}
-#define STANDARD_DEMUX_INIT \
- p_demux->pf_control = Control; \
- p_demux->pf_demux = Demux; \
- MALLOC_ERR( p_demux->p_sys, 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 ); \
- msg_Dbg( p_demux, msg ); \
-
-#define DEMUX_BY_EXTENSION( ext ) \
- demux_t *p_demux = (demux_t *)p_this; \
- if( !isExtension( 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( !isExtension( 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( !isExtension( p_demux, ext ) && !isDemux( 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( !isExtension( p_demux, ext ) && !isDemux( 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 CREATE_PACKETIZER( a,b,c,d ) \
- p_sys->p_packetizer = vlc_object_create( p_demux, VLC_OBJECT_DECODER ); \
- p_sys->p_packetizer->pf_decode_audio = 0; \
- p_sys->p_packetizer->pf_decode_video = 0; \
- p_sys->p_packetizer->pf_decode_sub = 0; \
- p_sys->p_packetizer->pf_packetize = 0; \
- es_format_Init( &p_sys->p_packetizer->fmt_in, AUDIO_ES, \
- VLC_FOURCC( a, b, c, d ) );
-
-/* BEWARE ! This can lead to memory leaks ! */
-#define LOAD_PACKETIZER_OR_FAIL( msg ) \
- p_sys->p_packetizer->p_module = \
- module_Need( p_sys->p_packetizer, "packetizer", NULL, 0 ); \
- \
- if( p_sys->p_packetizer->p_module == NULL ) \
- { \
- vlc_object_destroy( p_sys->p_packetizer ); \
- msg_Err( p_demux, "cannot find packetizer for " # msg ); \
- free( p_sys ); \
- return VLC_EGENERIC; \
- }
+/**
+ * This function will create a packetizer suitable for a demuxer that parses
+ * elementary stream.
+ *
+ * The provided es_format_t will be cleaned on error or by
+ * demux_PacketizerDestroy.
+ */
+VLC_EXPORT( decoder_t *,demux_PacketizerNew, ( demux_t *p_demux, es_format_t *p_fmt, const char *psz_msg ) LIBVLC_USED );
+
+/**
+ * This function will destroy a packetizer create by demux_PacketizerNew.
+ */
+VLC_EXPORT( void, demux_PacketizerDestroy, ( decoder_t *p_packetizer ) );
+
+/**
+ * This function will return the parent input of this demux.
+ * It is retained. Can return NULL.
+ */
+VLC_EXPORT( input_thread_t *, demux_GetParentInput, ( demux_t *p_demux ) LIBVLC_USED );
+
+/* */
+#define DEMUX_INIT_COMMON() do { \
+ p_demux->pf_control = Control; \
+ p_demux->pf_demux = Demux; \
+ p_demux->p_sys = calloc( 1, sizeof( demux_sys_t ) ); \
+ if( !p_demux->p_sys ) return VLC_ENOMEM;\
+ } while(0)
/**
* @}
projects / vlc / blobdiff