1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* IndexReader.cpp
*****************************************************************************
* Copyright (C) 2015 - VideoLAN and VLC authors
*
* This program 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 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "IndexReader.hpp"
#include "../mpd/Representation.h"
#include "../mpd/MPD.h"
using namespace adaptive::mp4;
using namespace dash::mp4;
using namespace dash::mpd;
IndexReader::IndexReader(vlc_object_t *obj)
: AtomsReader(obj)
{
}
bool IndexReader::parseIndex(block_t *p_block, BaseRepresentation *rep, uint64_t i_fileoffset)
{
if(!rep || !parseBlock(p_block))
return false;
MP4_Box_t *sidxbox = MP4_BoxGet(rootbox, "sidx");
if (sidxbox)
{
Representation::SplitPoint point;
std::vector<Representation::SplitPoint> splitlist;
MP4_Box_data_sidx_t *sidx = sidxbox->data.p_sidx;
/* sidx refers to offsets from end of sidx pos in the file + first offset */
point.offset = sidx->i_first_offset + i_fileoffset + sidxbox->i_pos + sidxbox->i_size;
point.time = 0;
if(!sidx->i_timescale)
return false;
for(uint16_t i=0; i<sidx->i_reference_count; i++)
{
splitlist.push_back(point);
point.offset += sidx->p_items[i].i_referenced_size;
point.duration = sidx->p_items[i].i_subsegment_duration;
point.time += point.duration;
}
rep->replaceAttribute(new TimescaleAttr(Timescale(sidx->i_timescale)));
rep->SplitUsingIndex(splitlist);
rep->getPlaylist()->debug();
}
return true;
}
|
