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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#include "m3u8Parser.h"
#include <pcrecpp.h>
cM3u8Parser::cM3u8Parser()
{
Init();
}
cM3u8Parser::cM3u8Parser(std::istream& m3u8)
{
Init();
Parse(m3u8);
}
void cM3u8Parser::Init()
{
TargetDuration = -1;
MediaSequence = -1;
MasterPlaylist = false;
AllowCache = true;
}
bool cM3u8Parser::Parse(std::istream& m3u8)
{
bool ok = true;
bool nextLineIsMedia = false;
int lineNo = 0;
// prepare regex
pcrecpp::RE re("#(EXT[^:\\n]+)(?::[^\\n]+)");
pcrecpp::RE reVal("(?::([^\\n]+))");
std::string line;
playListItem pItem;
pItem.bandwidth = -1;
pItem.file = "";
pItem.length = -1;
pItem.programId = -1;
while (std::getline(m3u8, line)) {
if(lineNo == 0 && "#EXTM3U" == line ) {
// Invalid File
ok = false;
continue;
}
if( re.FullMatch(line) ) {
string var;
//string value;
re.PartialMatch(line, &var);
if("EXT-X-TARGETDURATION" == var) {
int value;
reVal.PartialMatch(line, &value);
TargetDuration = value;
} else if ("EXT-X-ALLOW-CACHE" == var) {
string value;
reVal.PartialMatch(line, &value);
AllowCache = "YES" == value;
} else if ("EXT-X-MEDIA-SEQUENCE" == var) {
int value;
reVal.PartialMatch(line, &value);
MediaSequence = value;
} else if ("EXT-X-STREAM-INF" == var) {
MasterPlaylist = true;
nextLineIsMedia = true;
int bandw;
pcrecpp::RE reBand("BANDWIDTH=(\\d+)");
if(reBand.PartialMatch(line, &bandw)) {
pItem.bandwidth = bandw;
}
int id;
pcrecpp::RE reId("PROGRAM-ID=(\\d+)");
if(reId.PartialMatch(line, &id)) {
pItem.programId = id;
}
} else if ("EXTINF" == var) {
MasterPlaylist = false;
int value;
pcrecpp::RE reInt("(?:#EXTINF:([\\d]+))");
if( reInt.PartialMatch(line, &value)) {
nextLineIsMedia = true;
pItem.length = value;
}
}
}
// possible mediafile
else {
if(nextLineIsMedia) {
nextLineIsMedia = false;
pItem.file = line;
pItem.size = 0;
vPlaylistItems.push_back(pItem);
}
}
lineNo++;
}
return ok;
}
/*
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=4000000
session/731d4143-c05d-47ed-afa8-37913402630a/8/index.m3u8
*/
/*
#EXTM3U
#EXT-X-TARGETDURATION:3
#EXT-X-ALLOW-CACHE:NO
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:3, nodesc
00000.ts
#EXTINF:3, nodesc
00001.ts
...
#EXTINF:2, nodesc
01935.ts
#EXT-X-ENDLIST
*/
|
