Current File : //data/old/usr/local/include/gpac/term_info.h
/*
* GPAC - Multimedia Framework C SDK
*
* Authors: Jean Le Feuvre
* Copyright (c) Telecom ParisTech 2000-2012
* All rights reserved
*
* This file is part of GPAC / Stream Management sub-project
*
* GPAC is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* GPAC 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _GF_TERM_INFO_H_
#define _GF_TERM_INFO_H_
#ifdef __cplusplus
extern "C" {
#endif
/*!
* \file <gpac/term_info.h>
* \brief GPAC media object browsing of the player.
*/
/*!
*\addtogroup terminfo_grp Terminal Info
*\ingroup playback_grp
*\brief GPAC media object browsing of the player.
*
*This section documents how a user can get information on running media object in the player.
* @{
*/
/*
OD Browsing API - YOU MUST INCLUDE <gpac/terminal.h> before
(this has been separated from terminal.h to limit dependency of core to mpeg4_odf.h header)
ALL ITEMS ARE READ-ONLY AND SHALL NOT BE MODIFIED
*/
#include <gpac/mpeg4_odf.h>
#include <gpac/terminal.h>
/*returns top-level OD of the presentation*/
GF_ObjectManager *gf_term_get_root_object(GF_Terminal *term);
/*returns number of sub-ODs in the current root. scene_od must be an inline OD*/
u32 gf_term_get_object_count(GF_Terminal *term, GF_ObjectManager *scene_od);
/*returns indexed (0-based) OD manager in the scene*/
GF_ObjectManager *gf_term_get_object(GF_Terminal *term, GF_ObjectManager *scene_od, u32 index);
/*return values:
0: regular media object, not inline
1: root scene
2: inline scene
3: externProto library
*/
u32 gf_term_object_subscene_type(GF_Terminal *term, GF_ObjectManager *odm);
/*select given object when stream selection is available*/
void gf_term_select_object(GF_Terminal *term, GF_ObjectManager *odm);
/*select service by given ID for multiplexed services (MPEG-2 TS)*/
void gf_term_select_service(GF_Terminal *term, GF_ObjectManager *odm, u32 service_id);
/*sets addon on or off (only one addon possible for now). When OFF , the associated service is shut down*/
void gf_term_toggle_addons(GF_Terminal *term, Bool show_addons);
typedef struct
{
GF_ObjectDescriptor *od;
Double duration;
Double current_time;
/*0: stopped, 1: playing, 2: paused, 3: not setup, 4; setup failed.*/
u32 status;
/*if set, the PL flags are valid*/
Bool has_profiles;
Bool inline_pl;
u8 OD_pl;
u8 scene_pl;
u8 audio_pl;
u8 visual_pl;
u8 graphics_pl;
Bool raw_media;
Bool generated_scene;
/*name of module handling the service service */
const char *service_handler;
/*name of service*/
const char *service_url;
/*set if the service is owned by this object*/
Bool owns_service;
/*stream buffer:
-2: stream is not playing
-1: stream has no buffering
>=0: amount of media data present in buffer, in ms
*/
s32 buffer;
u32 min_buffer, max_buffer;
/*number of AUs in DB (cumulated on all input channels)*/
u32 db_unit_count;
/*number of CUs in composition memory (if any) and CM capacity*/
u16 cb_unit_count, cb_max_count;
/*inidciate that thye composition memory is bypassed for this decoder (video only) */
Bool direct_video_memory;
/*clock drift in ms of object clock: this is the delay set by the audio renderer to keep AV in sync*/
s32 clock_drift;
/*codec name*/
const char *codec_name;
/*object type - match streamType (cf constants.h)*/
u32 od_type;
/*audio properties*/
u32 sample_rate, bits_per_sample, num_channels;
/*video properties (w & h also used for scene codecs)*/
u32 width, height, pixelFormat, par;
/*average birate over last second and max bitrate over one second at decoder input - expressed in bits per sec*/
u32 avg_bitrate, instant_bitrate, max_bitrate;
u32 nb_dec_frames, nb_dropped;
u32 first_frame_time, last_frame_time;
u64 total_dec_time, irap_total_dec_time;
u32 max_dec_time, irap_max_dec_time;
u32 au_duration;
u32 nb_iraps;
s32 ntp_diff;
/*set if ISMACryp present on the object - will need refinement for IPMPX...
0: not protected - 1: protected and OK - 2: protected and DRM failed*/
u32 protection;
u32 lang;
const char *lang_code;
/*name of media if not defined in OD framework*/
const char *media_url;
} GF_MediaInfo;
/*fills the GF_MediaInfo structure describing the OD manager*/
GF_Err gf_term_get_object_info(GF_Terminal *term, GF_ObjectManager *odm, GF_MediaInfo *info);
/*gets current downloads info for the service - only use if ODM owns thesrevice, returns 0 otherwise.
@d_enum: in/out current enum - shall start to 0, incremented at each call. fct returns 0 if no more
downloads
@server: server name
@path: file/data location on server
@bytes_done, @total_bytes: file info. total_bytes may be 0 (eg http streaming)
@bytes_per_sec: guess what
*/
Bool gf_term_get_download_info(GF_Terminal *term, GF_ObjectManager *odm, u32 *d_enum, const char **server, const char **path, u32 *bytes_done, u32 *total_bytes, u32 *bytes_per_sec);
/*same principles as above , struct __netcom is defined in service.h*/
typedef struct __netstatcom NetStatCommand;
Bool gf_term_get_channel_net_info(GF_Terminal *term, GF_ObjectManager *odm, u32 *d_enum, u32 *chid, NetStatCommand *netcom, GF_Err *ret_code);
/*same principles as above , struct __netinfo is defined in service.h*/
typedef struct __netinfocom NetInfoCommand;
GF_Err gf_term_get_service_info(GF_Terminal *term, GF_ObjectManager *odm, NetInfoCommand *netcom);
/*retrieves world info of the scene @od belongs to.
If @odm is or points to an inlined OD the world info of the inlined content is retrieved
If @odm is NULL the world info of the main scene is retrieved
returns NULL if no WorldInfo available
returns world title if available
@descriptions: any textual descriptions is stored here
strings are not allocated
*/
const char *gf_term_get_world_info(GF_Terminal *term, GF_ObjectManager *scene_od, GF_List *descriptions);
/*dumps scene graph in specified file, in BT or XMT format
@rad_name: file radical (NULL for stdout) - if not NULL MUST BE GF_MAX_PATH length
@filename [out]: if not null, returns the complete filename (rad + ext); MUST BE FREED BY THE CALLER
if @skip_proto is set proto declarations are not dumped
If @odm is or points to an inlined OD the inlined scene is dumped
If @odm is NULL the main scene is dumped
*/
GF_Err gf_term_dump_scene(GF_Terminal *term, char *rad_name, char **filename, Bool xml_dump, Bool skip_proto, GF_ObjectManager *odm);
/*! @} */
#ifdef __cplusplus
}
#endif
#endif /*_GF_TERM_INFO_H_*/
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