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631 lines
20 KiB
631 lines
20 KiB
/*
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* Copyright (C) 2001 Rich Wareham <richwareham@users.sourceforge.net>
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*
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* This file is part of libdvdnav, a DVD navigation library.
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*
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* libdvdnav is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libdvdnav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* $Id: dvdnav.h,v 1.15 2005/10/14 21:02:16 miguelfreitas Exp $
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*
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*/
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/*
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* This is the main header file applications should include if they want
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* to access dvdnav functionality.
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*/
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#ifndef DVDNAV_H_INCLUDED
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#define DVDNAV_H_INCLUDED
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "common.h"
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# include "dvdnav_events.h"
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# include "dvd_types.h"
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/*********************************************************************
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* dvdnav data types *
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*********************************************************************/
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/*
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* Opaque data-type can be viewed as a 'DVD handle'. You should get
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* a pointer to a dvdnav_t from the dvdnav_open() function.
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* Never call free() on the pointer, you have to give it back with
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* dvdnav_close().
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*/
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typedef struct dvdnav_s dvdnav_t;
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/* tqStatus as reported by most of libdvdnav's functions */
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typedef int32_t dvdnav_status_t;
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/*
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* Unless otherwise stated, all functions return DVDNAV_STATUS_OK if
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* they succeeded, otherwise DVDNAV_STATUS_ERR is returned and the error may
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* be obtained by calling dvdnav_err_to_string().
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*/
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#define DVDNAV_STATUS_ERR 0
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#define DVDNAV_STATUS_OK 1
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/*********************************************************************
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* initialisation & housekeeping functions *
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*********************************************************************/
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/*
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* These functions allow you to open a DVD device and associate it
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* with a dvdnav_t.
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*/
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/*
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* Attempts to open the DVD drive at the specified path and pre-cache
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* the CSS-keys. libdvdread is used to access the DVD, so any source
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* supported by libdvdread can be given with "path". Currently,
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* libdvdread can access: DVD drives, DVD image files, DVD file-by-file
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* copies.
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*
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* The resulting dvdnav_t handle will be written to *dest.
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*/
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dvdnav_status_t dvdnav_open(dvdnav_t **dest, const char *path,dvd_reader_t *dvd);
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/*
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* Closes a dvdnav_t previously opened with dvdnav_open(), freeing any
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* memory associated with it.
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*/
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dvdnav_status_t dvdnav_close(dvdnav_t *self);
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/*
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* Resets the DVD virtual machine and cache buffers.
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*/
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dvdnav_status_t dvdnav_reset(dvdnav_t *self);
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/*
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* Fills a pointer with a value pointing to a string describing
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* the path associated with an open dvdnav_t. It assigns *path to NULL
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* on error.
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*/
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dvdnav_status_t dvdnav_path(dvdnav_t *self, const char **path);
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/*
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* Returns a human-readable string describing the last error.
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*/
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const char* dvdnav_err_to_string(dvdnav_t *self);
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/* converts a dvd_time_t to PTS ticks */
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int64_t dvdnav_convert_time(dvd_time_t *time);
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/*********************************************************************
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* changing and reading DVD player characteristics *
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*********************************************************************/
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/*
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* These functions allow you to manipulate the various global characteristics
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* of the DVD playback engine.
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*/
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/*
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* Sets the region tqmask (bit 0 set implies region 1, bit 1 set implies
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* region 2, etc) of the virtual machine. Generally you will only need to set
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* this if you are playing RCE discs which query the virtual machine as to its
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* region setting.
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*
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* This has _nothing_ to do with the region setting of the DVD drive.
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*/
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dvdnav_status_t dvdnav_set_region_tqmask(dvdnav_t *self, int32_t region_tqmask);
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/*
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* Returns the region tqmask (bit 0 set implies region 1, bit 1 set implies
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* region 2, etc) of the virtual machine.
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*
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* This has _nothing_ to do with the region setting of the DVD drive.
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*/
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dvdnav_status_t dvdnav_get_region_tqmask(dvdnav_t *self, int32_t *region_tqmask);
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/*
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* Specify whether read-ahead caching should be used. You may not want this if your
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* decoding engine does its own buffering.
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*
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* The default read-ahead cache does not use an additional thread for the reading
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* (see read_cache.c for a threaded cache, but note that this code is currently
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* unmaintained). It prebuffers on VOBU level by reading ahead several buffers
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* on every read request. The speed of this prebuffering has been optimized to
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* also work on slow DVD drives.
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*
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* If in addition you want to prevent memcpy's to improve performance, have a look
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* at dvdnav_get_next_cache_block().
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*/
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dvdnav_status_t dvdnav_set_readahead_flag(dvdnav_t *self, int32_t read_ahead_flag);
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/*
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* Query whether read-ahead caching/buffering will be used.
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*/
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dvdnav_status_t dvdnav_get_readahead_flag(dvdnav_t *self, int32_t *read_ahead_flag);
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/*
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* Specify whether the positioning works PGC or PG based.
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* Programs (PGs) on DVDs are similar to Chapters and a program chain (PGC)
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* usually covers a whole feature. This affects the behaviour of the
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* functions dvdnav_get_position() and dvdnav_sector_search(). See there.
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* Default is PG based positioning.
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*/
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dvdnav_status_t dvdnav_set_PGC_positioning_flag(dvdnav_t *self, int32_t pgc_based_flag);
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/*
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* Query whether positioning is PG or PGC based.
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*/
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dvdnav_status_t dvdnav_get_PGC_positioning_flag(dvdnav_t *self, int32_t *pgc_based_flag);
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/*********************************************************************
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* reading data *
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*********************************************************************/
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/*
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* These functions are used to poll the playback enginge and actually get data
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* off the DVD.
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*/
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/*
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* Attempts to get the next block off the DVD and copies it into the buffer 'buf'.
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* If there is any special actions that may need to be performed, the value
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* pointed to by 'event' gets set accordingly.
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*
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* If 'event' is DVDNAV_BLOCK_OK then 'buf' is filled with the next block
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* (note that means it has to be at /least/ 2048 bytes big). 'len' is
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* then set to 2048.
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*
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* Otherwise, buf is filled with an appropriate event structure and
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* len is set to the length of that structure.
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*
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* See the dvdnav_events.h header for information on the various events.
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*/
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dvdnav_status_t dvdnav_get_next_block(dvdnav_t *self, uint8_t *buf,
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int32_t *event, int32_t *len);
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/*
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* This basically does the same as dvdnav_get_next_block. The only difference is
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* that it avoids a memcopy, when the requested block was found in the cache.
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* I such a case (cache hit) this function will return a different pointer than
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* the one handed in, pointing directly into the relevant block in the cache.
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* Those pointers must _never_ be freed but instead returned to the library via
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* dvdnav_free_cache_block().
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*/
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dvdnav_status_t dvdnav_get_next_cache_block(dvdnav_t *self, uint8_t **buf,
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int32_t *event, int32_t *len);
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/*
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* All buffers which came from the internal cache (when dvdnav_get_next_cache_block()
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* returned a buffer different from the one handed in) have to be freed with this
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* function. Although handing in other buffers not from the cache doesn't cause any harm.
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*/
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dvdnav_status_t dvdnav_free_cache_block(dvdnav_t *self, unsigned char *buf);
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/*
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* If we are currently in a still-frame this function skips it.
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*
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* See also the DVDNAV_STILL_FRAME event.
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*/
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dvdnav_status_t dvdnav_still_skip(dvdnav_t *self);
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/*
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* If we are currently in WAIT state, that is: the application is required to
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* wait for its fifos to become empty, calling this signals libdvdnav that this
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* is achieved and that it can continue.
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*
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* See also the DVDNAV_WAIT event.
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*/
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dvdnav_status_t dvdnav_wait_skip(dvdnav_t *self);
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/*
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* Returns the still time from the currently playing cell.
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* The still time is given in seconds with 0xff meaning an indefinite still.
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*
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* This function can be used to detect still frames before they are reached.
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* Some players might need this to prepare for a frame to be shown for a
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* longer time than usual.
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*/
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uint32_t dvdnav_get_next_still_flag(dvdnav_t *self);
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/*
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* Stops playback. The next event obtained with one of the get_next_block
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* functions will be a DVDNAV_STOP event.
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*
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* It is not required to call this before dvdnav_close().
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*/
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dvdnav_status_t dvdnav_stop(dvdnav_t *self);
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/*********************************************************************
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* title/part navigation *
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*********************************************************************/
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/*
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* Returns the number of titles on the disk.
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*/
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dvdnav_status_t dvdnav_get_number_of_titles(dvdnav_t *self, int32_t *titles);
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/*
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* Returns the number of parts within the given title.
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*/
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dvdnav_status_t dvdnav_get_number_of_parts(dvdnav_t *self, int32_t title, int32_t *parts);
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/*
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* Plays the specified title of the DVD from its beginning (that is: part 1).
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*/
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dvdnav_status_t dvdnav_title_play(dvdnav_t *self, int32_t title);
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/*
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* Plays the specified title, starting from the specified part.
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*/
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dvdnav_status_t dvdnav_part_play(dvdnav_t *self, int32_t title, int32_t part);
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/*
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* Play the specified amount of parts of the specified title of
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* the DVD then STOP.
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*
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* Currently unimplemented!
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*/
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dvdnav_status_t dvdnav_part_play_auto_stop(dvdnav_t *self, int32_t title,
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int32_t part, int32_t parts_to_play);
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/*
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* Play the specified title starting from the specified time.
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*
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* Currently unimplemented!
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*/
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dvdnav_status_t dvdnav_time_play(dvdnav_t *self, int32_t title,
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uint64_t time);
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/*
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* Stop playing the current position and jump to the specified menu.
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*
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* See also DVDMenuID_t from libdvdread
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*/
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dvdnav_status_t dvdnav_menu_call(dvdnav_t *self, DVDMenuID_t menu);
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/*
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* Return the title number and part currently being played.
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* A title of 0 indicates, we are in a menu. In this case, part
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* is set to the current menu's ID.
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*/
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dvdnav_status_t dvdnav_current_title_info(dvdnav_t *self, int32_t *title,
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int32_t *part);
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/*
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* Return the current position (in blocks) within the current
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* title and the length (in blocks) of said title.
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*
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* Current implementation is wrong and likely to behave unpredictably!
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* Use is discouraged!
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*/
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dvdnav_status_t dvdnav_get_position_in_title(dvdnav_t *self,
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uint32_t *pos,
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uint32_t *len);
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/*
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* This function is only available for compatibility reasons.
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*
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* Stop playing the current position and start playback of the current title
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* from the specified part.
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*/
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dvdnav_status_t dvdnav_part_search(dvdnav_t *self, int32_t part);
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/*********************************************************************
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* program chain/program navigation *
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*********************************************************************/
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/*
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* Stop playing the current position and start playback from the last
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* VOBU boundary before the given sector. The sector number is not
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* meant to be an absolute physical DVD sector, but a relative sector
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* in the current program. This function cannot leave the current
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* program and will fail, if asked to do so.
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*
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* If program chain based positioning is enabled
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* (see dvdnav_set_PGC_positioning_flag()), this will seek to the relative
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* sector inside the current program chain.
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*
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* 'origin' can be one of SEEK_SET, SEEK_CUR, SEEK_END as defined in
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* fcntl.h.
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*/
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dvdnav_status_t dvdnav_sector_search(dvdnav_t *self,
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uint64_t offset, int32_t origin);
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/*
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* Stop playing the current position and start playback of the title
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* from the specified timecode.
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*
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* Currently unimplemented!
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*/
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dvdnav_status_t dvdnav_time_search(dvdnav_t *self,
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uint64_t time);
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/*
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* Stop playing current position and play the "GoUp"-program chain.
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* (which generally leads to the title menu or a higer-level menu).
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*/
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dvdnav_status_t dvdnav_go_up(dvdnav_t *self);
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/*
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* Stop playing the current position and start playback at the
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* previous program (if it exists).
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*/
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dvdnav_status_t dvdnav_prev_pg_search(dvdnav_t *self);
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/*
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* Stop playing the current position and start playback at the
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* first program.
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*/
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dvdnav_status_t dvdnav_top_pg_search(dvdnav_t *self);
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/*
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* Stop playing the current position and start playback at the
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* next program (if it exists).
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*/
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dvdnav_status_t dvdnav_next_pg_search(dvdnav_t *self);
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/*
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* Return the current position (in blocks) within the current
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* program and the length (in blocks) of current program.
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*
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* If program chain based positioning is enabled
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* (see dvdnav_set_PGC_positioning_flag()), this will return the
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* relative position in and the length of the current program chain.
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*/
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dvdnav_status_t dvdnav_get_position(dvdnav_t *self, uint32_t *pos,
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uint32_t *len);
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/*********************************************************************
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* menu highlights *
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*********************************************************************/
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/*
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* Most functions related to highlights take a NAV PCI packet as a parameter.
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* While you can get the such a packet from libdvdnav, for players with internal
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* FIFOs, this will result in errors, because due to the FIFO length, libdvdnav will
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* be ahead in the stream compared to what the user is seeing on screen.
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* Therefore, player applications who have a NAV packet available, which is
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* better in sync with the actual playback should always pass this one to these
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* functions.
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*/
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/*
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* Get the currently highlighted button
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* number (1..36) or 0 if no button is highlighted.
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*/
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dvdnav_status_t dvdnav_get_current_highlight(dvdnav_t *self, int32_t *button);
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/*
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* Returns the Presentation Control Information (PCI) structure associated
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* with the current position.
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*
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* Read the general notes above.
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* See also libdvdreads nav_types.h for definition of pci_t.
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*/
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pci_t* dvdnav_get_current_nav_pci(dvdnav_t *self);
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/*
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* Returns the DSI (data search information) structure associated
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* with the current position.
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*
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* Read the general notes above.
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* See also libdvdreads nav_types.h for definition of dsi_t.
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*/
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dsi_t* dvdnav_get_current_nav_dsi(dvdnav_t *self);
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/*
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* Get the area associated with a certain button.
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*/
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dvdnav_status_t dvdnav_get_highlight_area(pci_t *nav_pci , int32_t button, int32_t mode,
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dvdnav_highlight_area_t *highlight);
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/*
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* Move button highlight around as suggested by function name (e.g. with arrow keys).
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*/
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dvdnav_status_t dvdnav_upper_button_select(dvdnav_t *self, pci_t *pci);
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dvdnav_status_t dvdnav_lower_button_select(dvdnav_t *self, pci_t *pci);
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dvdnav_status_t dvdnav_right_button_select(dvdnav_t *self, pci_t *pci);
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dvdnav_status_t dvdnav_left_button_select(dvdnav_t *self, pci_t *pci);
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/*
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* Activate ("press") the currently highlighted button.
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*/
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dvdnav_status_t dvdnav_button_activate(dvdnav_t *self, pci_t *pci);
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/*
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* Highlight a specific button.
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*/
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dvdnav_status_t dvdnav_button_select(dvdnav_t *self, pci_t *pci, int32_t button);
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/*
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* Activate ("press") specified button.
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*/
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dvdnav_status_t dvdnav_button_select_and_activate(dvdnav_t *self, pci_t *pci, int32_t button);
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/*
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* Activate (press) a button and execute specified command.
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*/
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dvdnav_status_t dvdnav_button_activate_cmd(dvdnav_t *self, int32_t button, vm_cmd_t *cmd);
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/*
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* Select button at specified video frame coordinates.
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*/
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dvdnav_status_t dvdnav_mouse_select(dvdnav_t *self, pci_t *pci, int32_t x, int32_t y);
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/*
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* Activate ("press") button at specified video frame coordinates.
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*/
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dvdnav_status_t dvdnav_mouse_activate(dvdnav_t *self, pci_t *pci, int32_t x, int32_t y);
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/*********************************************************************
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* languages *
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*********************************************************************/
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/*
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* The language codes expected by these functions are two character
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* codes as defined in ISO639.
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*/
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/*
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* Set which menu language we should use per default.
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*/
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dvdnav_status_t dvdnav_menu_language_select(dvdnav_t *self,
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char *code);
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/*
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* Set which audio language we should use per default.
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*/
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dvdnav_status_t dvdnav_audio_language_select(dvdnav_t *self,
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char *code);
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/*
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* Set which spu language we should use per default.
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*/
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dvdnav_status_t dvdnav_spu_language_select(dvdnav_t *self,
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char *code);
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/*********************************************************************
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* obtaining stream attributes *
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*********************************************************************/
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/*
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* Return a string describing the title of the DVD.
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* This is an ID string encoded on the disc by the author. In many cases
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* this is a descriptive string such as `THE_MATRIX' but sometimes is sigularly
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* uninformative such as `PDVD-011421'. Some DVD authors even forget to set this,
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* so you may also read the default of the authoring software they used, like
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* `DVDVolume'.
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*/
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dvdnav_status_t dvdnav_get_title_string(dvdnav_t *self, const char **title_str);
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/*
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* Get video aspect code.
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* The aspect code does only change on VTS boundaries.
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* See the DVDNAV_VTS_CHANGE event.
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*
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* 0 -- 4:3, 2 -- 16:9
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*/
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uint8_t dvdnav_get_video_aspect(dvdnav_t *self);
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/*
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* Get video scaling permissions.
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* The scaling permission does only change on VTS boundaries.
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* See the DVDNAV_VTS_CHANGE event.
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*
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* bit0 set = deny letterboxing, bit1 set = deny pan&scan
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|
*/
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uint8_t dvdnav_get_video_scale_permission(dvdnav_t *self);
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|
|
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/*
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* Converts a *logical* audio stream id into language code
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* (returns 0xffff if no such stream).
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|
*/
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uint16_t dvdnav_audio_stream_to_lang(dvdnav_t *self, uint8_t stream);
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|
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/*
|
|
* Converts a *logical* subpicture stream id into country code
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|
* (returns 0xffff if no such stream).
|
|
*/
|
|
uint16_t dvdnav_spu_stream_to_lang(dvdnav_t *self, uint8_t stream);
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/*
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* Converts a *physical* (MPEG) audio stream id into a logical stream number.
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|
*/
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|
int8_t dvdnav_get_audio_logical_stream(dvdnav_t *self, uint8_t audio_num);
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|
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/*
|
|
* Converts a *physical* (MPEG) subpicture stream id into a logical stream number.
|
|
*/
|
|
int8_t dvdnav_get_spu_logical_stream(dvdnav_t *self, uint8_t subp_num);
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|
|
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/*
|
|
* Get active audio stream.
|
|
*/
|
|
int8_t dvdnav_get_active_audio_stream(dvdnav_t *self);
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|
|
|
/*
|
|
* Get active spu stream.
|
|
*/
|
|
int8_t dvdnav_get_active_spu_stream(dvdnav_t *self);
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|
|
|
|
|
/*********************************************************************
|
|
* multiple angles *
|
|
*********************************************************************/
|
|
|
|
/*
|
|
* The libdvdnav library abstracts away the difference between seamless and
|
|
* non-seamless angles. From the point of view of the programmer you just set the
|
|
* angle number and all is well in the world. You will always see only the
|
|
* selected angle coming from the get_next_block functions.
|
|
*
|
|
* Note:
|
|
* It is quite possible that some tremendously strange DVD feature might change the
|
|
* angle number from under you. Generally you should always view the results from
|
|
* dvdnav_get_angle_info() as definitive only up to the next time you call
|
|
* dvdnav_get_next_block().
|
|
*/
|
|
|
|
/*
|
|
* Sets the current angle. If you try to follow a non existant angle
|
|
* the call fails.
|
|
*/
|
|
dvdnav_status_t dvdnav_angle_change(dvdnav_t *self, int32_t angle);
|
|
|
|
/*
|
|
* Returns the current angle and number of angles present.
|
|
*/
|
|
dvdnav_status_t dvdnav_get_angle_info(dvdnav_t *self, int32_t *current_angle,
|
|
int32_t *number_of_angles);
|
|
|
|
/*********************************************************************
|
|
* domain queries *
|
|
*********************************************************************/
|
|
|
|
/*
|
|
* Are we in the First Play domain?
|
|
*/
|
|
int8_t dvdnav_is_domain_fp(dvdnav_t *self);
|
|
|
|
/*
|
|
* Are we in the Video management Menu domain?
|
|
*/
|
|
int8_t dvdnav_is_domain_vmgm(dvdnav_t *self);
|
|
|
|
/*
|
|
* Are we in the Video Title Menu domain?
|
|
*/
|
|
int8_t dvdnav_is_domain_vtsm(dvdnav_t *self);
|
|
|
|
/*
|
|
* Are we in the Video Title Set domain?
|
|
*/
|
|
int8_t dvdnav_is_domain_vts(dvdnav_t *self);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* DVDNAV_H_INCLUDED */
|