vlc_input.h
资源名称:vlc-1.0.5.zip [点击查看]
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上传日期:2020-07-06
资源大小:29949k
文件大小:20k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * vlc_input.h: Core input structures
- *****************************************************************************
- * Copyright (C) 1999-2006 the VideoLAN team
- * $Id: 06f6fc2bf33010d1c238bf601cb5171e897766f5 $
- *
- * Authors: Christophe Massiot <massiot@via.ecp.fr>
- * Laurent Aimar <fenrir@via.ecp.fr>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /* __ is need because conflict with <vlc/input.h> */
- #ifndef VLC__INPUT_H
- #define VLC__INPUT_H 1
- /**
- * file
- * This file defines functions, structures and enums for input objects in vlc
- */
- #include <vlc_es.h>
- #include <vlc_meta.h>
- #include <vlc_epg.h>
- #include <vlc_events.h>
- #include <vlc_input_item.h>
- #include <string.h>
- /*****************************************************************************
- * Meta data helpers
- *****************************************************************************/
- static inline void vlc_audio_replay_gain_MergeFromMeta( audio_replay_gain_t *p_dst,
- const vlc_meta_t *p_meta )
- {
- char * psz_value;
- if( !p_meta )
- return;
- if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_GAIN" )) ||
- (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_RADIO" )) )
- {
- p_dst->pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true;
- p_dst->pf_gain[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
- }
- else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_PEAK" )) ||
- (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_PEAK" )) )
- {
- p_dst->pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true;
- p_dst->pf_peak[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
- }
- else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_GAIN" )) ||
- (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_AUDIOPHILE" )) )
- {
- p_dst->pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true;
- p_dst->pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
- }
- else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_PEAK" )) )
- {
- p_dst->pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true;
- p_dst->pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
- }
- }
- /*****************************************************************************
- * Seek point: (generalisation of chapters)
- *****************************************************************************/
- struct seekpoint_t
- {
- int64_t i_byte_offset;
- int64_t i_time_offset;
- char *psz_name;
- int i_level;
- };
- static inline seekpoint_t *vlc_seekpoint_New( void )
- {
- seekpoint_t *point = (seekpoint_t*)malloc( sizeof( seekpoint_t ) );
- point->i_byte_offset =
- point->i_time_offset = -1;
- point->i_level = 0;
- point->psz_name = NULL;
- return point;
- }
- static inline void vlc_seekpoint_Delete( seekpoint_t *point )
- {
- if( !point ) return;
- free( point->psz_name );
- free( point );
- }
- static inline seekpoint_t *vlc_seekpoint_Duplicate( seekpoint_t *src )
- {
- seekpoint_t *point = vlc_seekpoint_New();
- if( src->psz_name ) point->psz_name = strdup( src->psz_name );
- point->i_time_offset = src->i_time_offset;
- point->i_byte_offset = src->i_byte_offset;
- return point;
- }
- /*****************************************************************************
- * Title:
- *****************************************************************************/
- typedef struct
- {
- char *psz_name;
- bool b_menu; /* Is it a menu or a normal entry */
- int64_t i_length; /* Length(microsecond) if known, else 0 */
- int64_t i_size; /* Size (bytes) if known, else 0 */
- /* Title seekpoint */
- int i_seekpoint;
- seekpoint_t **seekpoint;
- } input_title_t;
- static inline input_title_t *vlc_input_title_New(void)
- {
- input_title_t *t = (input_title_t*)malloc( sizeof( input_title_t ) );
- t->psz_name = NULL;
- t->b_menu = false;
- t->i_length = 0;
- t->i_size = 0;
- t->i_seekpoint = 0;
- t->seekpoint = NULL;
- return t;
- }
- static inline void vlc_input_title_Delete( input_title_t *t )
- {
- int i;
- if( t == NULL )
- return;
- free( t->psz_name );
- for( i = 0; i < t->i_seekpoint; i++ )
- {
- free( t->seekpoint[i]->psz_name );
- free( t->seekpoint[i] );
- }
- free( t->seekpoint );
- free( t );
- }
- static inline input_title_t *vlc_input_title_Duplicate( input_title_t *t )
- {
- input_title_t *dup = vlc_input_title_New( );
- int i;
- if( t->psz_name ) dup->psz_name = strdup( t->psz_name );
- dup->b_menu = t->b_menu;
- dup->i_length = t->i_length;
- dup->i_size = t->i_size;
- dup->i_seekpoint = t->i_seekpoint;
- if( t->i_seekpoint > 0 )
- {
- dup->seekpoint = (seekpoint_t**)calloc( t->i_seekpoint,
- sizeof(seekpoint_t*) );
- for( i = 0; i < t->i_seekpoint; i++ )
- {
- dup->seekpoint[i] = vlc_seekpoint_Duplicate( t->seekpoint[i] );
- }
- }
- return dup;
- }
- /*****************************************************************************
- * Attachments
- *****************************************************************************/
- struct input_attachment_t
- {
- char *psz_name;
- char *psz_mime;
- char *psz_description;
- int i_data;
- void *p_data;
- };
- static inline input_attachment_t *vlc_input_attachment_New( const char *psz_name,
- const char *psz_mime,
- const char *psz_description,
- const void *p_data,
- int i_data )
- {
- input_attachment_t *a =
- (input_attachment_t*)malloc( sizeof(input_attachment_t) );
- if( !a )
- return NULL;
- a->psz_name = strdup( psz_name ? psz_name : "" );
- a->psz_mime = strdup( psz_mime ? psz_mime : "" );
- a->psz_description = strdup( psz_description ? psz_description : "" );
- a->i_data = i_data;
- a->p_data = NULL;
- if( i_data > 0 )
- {
- a->p_data = malloc( i_data );
- if( a->p_data && p_data )
- memcpy( a->p_data, p_data, i_data );
- }
- return a;
- }
- static inline input_attachment_t *vlc_input_attachment_Duplicate( const input_attachment_t *a )
- {
- return vlc_input_attachment_New( a->psz_name, a->psz_mime, a->psz_description,
- a->p_data, a->i_data );
- }
- static inline void vlc_input_attachment_Delete( input_attachment_t *a )
- {
- if( !a )
- return;
- free( a->psz_name );
- free( a->psz_mime );
- free( a->psz_description );
- free( a->p_data );
- free( a );
- }
- /*****************************************************************************
- * input defines/constants.
- *****************************************************************************/
- /* i_update field of access_t/demux_t */
- #define INPUT_UPDATE_NONE 0x0000
- #define INPUT_UPDATE_SIZE 0x0001
- #define INPUT_UPDATE_TITLE 0x0010
- #define INPUT_UPDATE_SEEKPOINT 0x0020
- #define INPUT_UPDATE_META 0x0040
- #define INPUT_UPDATE_SIGNAL 0x0080
- /**
- * This defines private core storage for an input.
- */
- typedef struct input_thread_private_t input_thread_private_t;
- /**
- * This defines an opaque input resource handler.
- */
- typedef struct input_resource_t input_resource_t;
- /**
- * Main structure representing an input thread. This structure is mostly
- * private. The only public fields are READ-ONLY. You must use the helpers
- * to modify them
- */
- struct input_thread_t
- {
- VLC_COMMON_MEMBERS;
- bool b_eof;
- bool b_preparsing;
- bool b_dead;
- /* All other data is input_thread is PRIVATE. You can't access it
- * outside of src/input */
- input_thread_private_t *p;
- };
- /**
- * Record prefix string.
- * TODO make it configurable.
- */
- #define INPUT_RECORD_PREFIX "vlc-record-%Y-%m-%d-%Hh%Mm%Ss-$ N-$ p"
- /*****************************************************************************
- * Input events and variables
- *****************************************************************************/
- /**
- * defgroup inputvariable Input variables
- *
- * The input provides multiples variable you can write to and/or read from.
- *
- * TODO complete the documentation.
- * The read only variables are:
- * - "length"
- * - "can-seek" (if you can seek, it doesn't say if 'bar display' has be shown
- * or not, for that check position != 0.0)
- * - "can-pause"
- * - "can-rate"
- * - "can-rewind"
- * - "can-record" (if a stream can be recorded while playing)
- * - "teletext-es" (list of id from the spu tracks (spu-es) that are teletext, the
- * variable value being the one currently selected, -1 if no teletext)
- * - "signal-quality"
- * - "signal-strength"
- * - "program-scrambled" (if the current program is scrambled)
- * - "cache" (level of data cached [0 .. 1])
- *
- * The read-write variables are:
- * - state (see input_state_e)
- * - rate, rate-slower, rate-faster
- * - position, position-offset
- * - time, time-offset
- * - title, next-title, prev-title
- * - chapter, next-chapter, next-chapter-prev
- * - program, audio-es, video-es, spu-es
- * - audio-delay, spu-delay
- * - bookmark (bookmark list)
- * - record
- * - frame-next
- * - navigation (list of "title %2i")
- * - "title %2i"
- *
- * The variable used for event is
- * - intf-event (see input_event_type_e)
- */
- /**
- * Input state
- *
- * This enum is used by the variable "state"
- */
- typedef enum input_state_e
- {
- INIT_S = 0,
- OPENING_S,
- PLAYING_S,
- PAUSE_S,
- END_S,
- ERROR_S,
- } input_state_e;
- /**
- * Input rate.
- *
- * It is an integer used by the variable "rate" in the
- * range [INPUT_RATE_MIN, INPUT_RATE_MAX] the default value
- * being INPUT_RATE_DEFAULT.
- *
- * A value lower than INPUT_RATE_DEFAULT plays faster.
- * A value higher than INPUT_RATE_DEFAULT plays slower.
- */
- /**
- * Default rate value
- */
- #define INPUT_RATE_DEFAULT 1000
- /**
- * Minimal rate value
- */
- #define INPUT_RATE_MIN 32 /* Up to 32/1 */
- /**
- * Maximal rate value
- */
- #define INPUT_RATE_MAX 32000 /* Up to 1/32 */
- /**
- * Input events
- *
- * You can catch input event by adding a callback on the variable "intf-event".
- * This variable is an integer that will hold a input_event_type_e value.
- */
- typedef enum input_event_type_e
- {
- /* "state" has changed */
- INPUT_EVENT_STATE,
- /* b_dead is true */
- INPUT_EVENT_DEAD,
- /* a *user* abort has been requested */
- INPUT_EVENT_ABORT,
- /* "rate" has changed */
- INPUT_EVENT_RATE,
- /* At least one of "position" or "time" or "length" has changed */
- INPUT_EVENT_TIMES,
- /* A title has been added or removed or selected.
- * It imply that chapter has changed (not chapter event is sent) */
- INPUT_EVENT_TITLE,
- /* A chapter has been added or removed or selected. */
- INPUT_EVENT_CHAPTER,
- /* A program ("program") has been added or removed or selected,
- * or "program-scrambled" has changed.*/
- INPUT_EVENT_PROGRAM,
- /* A ES has been added or removed or selected */
- INPUT_EVENT_ES,
- /* "teletext-es" has changed */
- INPUT_EVENT_TELETEXT,
- /* "record" has changed */
- INPUT_EVENT_RECORD,
- /* input_item_t media has changed */
- INPUT_EVENT_ITEM_META,
- /* input_item_t info has changed */
- INPUT_EVENT_ITEM_INFO,
- /* input_item_t name has changed */
- INPUT_EVENT_ITEM_NAME,
- /* Input statistics have been updated */
- INPUT_EVENT_STATISTICS,
- /* At least one of "signal-quality" or "signal-strength" has changed */
- INPUT_EVENT_SIGNAL,
- /* "audio-delay" has changed */
- INPUT_EVENT_AUDIO_DELAY,
- /* "spu-delay" has changed */
- INPUT_EVENT_SUBTITLE_DELAY,
- /* "bookmark" has changed */
- INPUT_EVENT_BOOKMARK,
- /* cache" has changed */
- INPUT_EVENT_CACHE,
- /* A aout_instance_t object has been created/deleted by *the input* */
- INPUT_EVENT_AOUT,
- /* A vout_thread_t object has been created/deleted by *the input* */
- INPUT_EVENT_VOUT,
- } input_event_type_e;
- /**
- * Input queries
- */
- enum input_query_e
- {
- /* input variable "position" */
- INPUT_GET_POSITION, /* arg1= double * res= */
- INPUT_SET_POSITION, /* arg1= double res=can fail */
- /* input variable "length" */
- INPUT_GET_LENGTH, /* arg1= int64_t * res=can fail */
- /* input variable "time" */
- INPUT_GET_TIME, /* arg1= int64_t * res= */
- INPUT_SET_TIME, /* arg1= int64_t res=can fail */
- /* input variable "rate" (1 is DEFAULT_RATE) */
- INPUT_GET_RATE, /* arg1= int * res= */
- INPUT_SET_RATE, /* arg1= int res=can fail */
- /* input variable "state" */
- INPUT_GET_STATE, /* arg1= int * res= */
- INPUT_SET_STATE, /* arg1= int res=can fail */
- /* input variable "audio-delay" and "sub-delay" */
- INPUT_GET_AUDIO_DELAY, /* arg1 = int* res=can fail */
- INPUT_SET_AUDIO_DELAY, /* arg1 = int res=can fail */
- INPUT_GET_SPU_DELAY, /* arg1 = int* res=can fail */
- INPUT_SET_SPU_DELAY, /* arg1 = int res=can fail */
- /* Meta datas */
- INPUT_ADD_INFO, /* arg1= char* arg2= char* arg3=... res=can fail */
- INPUT_GET_INFO, /* arg1= char* arg2= char* arg3= char** res=can fail */
- INPUT_DEL_INFO, /* arg1= char* arg2= char* res=can fail */
- INPUT_SET_NAME, /* arg1= char* res=can fail */
- /* Input config options */
- INPUT_ADD_OPTION, /* arg1= char * arg2= char * res=can fail*/
- /* Input properties */
- INPUT_GET_VIDEO_FPS, /* arg1= double * res=can fail */
- /* bookmarks */
- INPUT_GET_BOOKMARK, /* arg1= seekpoint_t * res=can fail */
- INPUT_GET_BOOKMARKS, /* arg1= seekpoint_t *** arg2= int * res=can fail */
- INPUT_CLEAR_BOOKMARKS, /* res=can fail */
- INPUT_ADD_BOOKMARK, /* arg1= seekpoint_t * res=can fail */
- INPUT_CHANGE_BOOKMARK, /* arg1= seekpoint_t * arg2= int * res=can fail */
- INPUT_DEL_BOOKMARK, /* arg1= seekpoint_t * res=can fail */
- INPUT_SET_BOOKMARK, /* arg1= int res=can fail */
- /* Attachments */
- INPUT_GET_ATTACHMENTS, /* arg1=input_attachment_t***, arg2=int* res=can fail */
- INPUT_GET_ATTACHMENT, /* arg1=input_attachment_t**, arg2=char* res=can fail */
- /* On the fly input slave */
- INPUT_ADD_SLAVE, /* arg1= const char * */
- INPUT_ADD_SUBTITLE, /* arg1= const char *, arg2=bool b_check_extension */
- /* On the fly record while playing */
- INPUT_SET_RECORD_STATE, /* arg1=bool res=can fail */
- INPUT_GET_RECORD_STATE, /* arg1=bool* res=can fail */
- /* ES */
- INPUT_RESTART_ES, /* arg1=int (-AUDIO/VIDEO/SPU_ES for the whole category) */
- /* Input ressources
- * XXX You must call vlc_object_release as soon as possible */
- INPUT_GET_AOUT, /* arg1=aout_instance_t ** res=can fail */
- INPUT_GET_VOUTS, /* arg1=vout_thread_t ***, int * res=can fail */
- };
- /** @}*/
- /*****************************************************************************
- * Prototypes
- *****************************************************************************/
- #define input_Create(a,b,c,d) __input_Create(VLC_OBJECT(a),b,c,d)
- VLC_EXPORT( input_thread_t *, __input_Create, ( vlc_object_t *p_parent, input_item_t *, const char *psz_log, input_resource_t * ) );
- #define input_CreateAndStart(a,b,c) __input_CreateAndStart(VLC_OBJECT(a),b,c)
- VLC_EXPORT( input_thread_t *, __input_CreateAndStart, ( vlc_object_t *p_parent, input_item_t *, const char *psz_log ) );
- VLC_EXPORT( int, input_Start, ( input_thread_t * ) );
- VLC_EXPORT( void, input_Stop, ( input_thread_t *, bool b_abort ) );
- #define input_Read(a,b,c) __input_Read(VLC_OBJECT(a),b, c)
- VLC_EXPORT( int, __input_Read, ( vlc_object_t *, input_item_t *, bool ) );
- VLC_EXPORT( int, input_vaControl,( input_thread_t *, int i_query, va_list ) );
- VLC_EXPORT( int, input_Control, ( input_thread_t *, int i_query, ... ) );
- /**
- * Get the input item for an input thread
- *
- * You have to keep a reference to the input or to the input_item_t until
- * you do not need it anymore.
- */
- VLC_EXPORT( input_item_t*, input_GetItem, ( input_thread_t * ) );
- /**
- * It will return the current state of the input.
- * Provided for convenience.
- */
- static inline input_state_e input_GetState( input_thread_t * p_input )
- {
- input_state_e state = INIT_S;
- input_Control( p_input, INPUT_GET_STATE, &state );
- return state;
- }
- /**
- * It will add a new subtitle source to the input.
- * Provided for convenience.
- */
- static inline int input_AddSubtitle( input_thread_t *p_input, const char *psz_url, bool b_check_extension )
- {
- return input_Control( p_input, INPUT_ADD_SUBTITLE, psz_url, b_check_extension );
- }
- /**
- * Return one of the video output (if any). If possible, you should use
- * INPUT_GET_VOUTS directly and process _all_ video outputs instead.
- * @param p_input an input thread from which to get a video output
- * @return NULL on error, or a video output thread pointer (which needs to be
- * released with vlc_object_release()).
- */
- static inline vout_thread_t *input_GetVout( input_thread_t *p_input )
- {
- vout_thread_t **pp_vout, *p_vout;
- unsigned i_vout;
- if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
- return NULL;
- for( unsigned i = 1; i < i_vout; i++ )
- vlc_object_release( (vlc_object_t *)(pp_vout[i]) );
- p_vout = (i_vout >= 1) ? pp_vout[0] : NULL;
- free( pp_vout );
- return p_vout;
- }
- /**
- * Return the audio output (if any) associated with an input.
- * @param p_input an input thread
- * @return NULL on error, or the audio output (which needs to be
- * released with vlc_object_release()).
- */
- static inline aout_instance_t *input_GetAout( input_thread_t *p_input )
- {
- aout_instance_t *p_aout;
- return input_Control( p_input, INPUT_GET_AOUT, &p_aout ) ? NULL : p_aout;
- }
- /* */
- typedef struct input_clock_t input_clock_t;
- VLC_EXPORT( decoder_t *, input_DecoderNew, ( input_thread_t *, es_format_t *, input_clock_t *, sout_instance_t * ) );
- VLC_EXPORT( void, input_DecoderDelete, ( decoder_t * ) );
- VLC_EXPORT( void, input_DecoderDecode,( decoder_t *, block_t *, bool b_do_pace ) );
- /**
- * This function allows to split a MRL into access, demux and path part.
- *
- * You should not write into access and demux string as they may not point into
- * the provided buffer.
- * The buffer provided by psz_dup will be modified.
- */
- VLC_EXPORT( void, input_SplitMRL, ( const char **ppsz_access, const char **ppsz_demux, char **ppsz_path, char *psz_dup ) );
- /**
- * This function creates a sane filename path.
- */
- VLC_EXPORT( char *, input_CreateFilename, ( vlc_object_t *, const char *psz_path, const char *psz_prefix, const char *psz_extension ) );
- #endif