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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* sections.c: Section data handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: sections.c 1.1 2003/12/22 11:17:38 kls Exp $
*/
#include "sections.h"
#include <unistd.h>
#include "device.h"
// --- cFilterHandle----------------------------------------------------------
class cFilterHandle : public cListObject {
public:
cFilterData filterData;
int handle;
int used;
cFilterHandle(const cFilterData &FilterData);
};
cFilterHandle::cFilterHandle(const cFilterData &FilterData)
{
filterData = FilterData;
handle = -1;
used = 0;
}
// --- cSectionHandler -------------------------------------------------------
cSectionHandler::cSectionHandler(cDevice *Device)
:cThread("Section handler")
{
device = Device;
active = false;
source = 0;
transponder = 0;
statusCount = 0;
on = false;
Start();
}
cSectionHandler::~cSectionHandler()
{
active = false;
Cancel(3);
cFilter *fi;
while ((fi = filters.First()) != NULL)
Detach(fi);
}
void cSectionHandler::Add(const cFilterData *FilterData)
{
Lock();
statusCount++;
cFilterHandle *fh;
for (fh = filterHandles.First(); fh; fh = filterHandles.Next(fh)) {
if (fh->filterData.Is(FilterData->pid, FilterData->tid, FilterData->mask))
break;
}
if (!fh) {
fh = new cFilterHandle(*FilterData);
filterHandles.Add(fh);
fh->handle = device->OpenFilter(FilterData->pid, FilterData->tid, FilterData->mask);
}
fh->used++;
Unlock();
}
void cSectionHandler::Del(const cFilterData *FilterData)
{
Lock();
statusCount++;
cFilterHandle *fh;
for (fh = filterHandles.First(); fh; fh = filterHandles.Next(fh)) {
if (fh->filterData.Is(FilterData->pid, FilterData->tid, FilterData->mask)) {
if (--fh->used <= 0) {
close(fh->handle);
filterHandles.Del(fh);
break;
}
}
}
Unlock();
}
void cSectionHandler::Attach(cFilter *Filter)
{
Lock();
statusCount++;
filters.Add(Filter);
Filter->sectionHandler = this;
Filter->SetStatus(true);
Unlock();
}
void cSectionHandler::Detach(cFilter *Filter)
{
Lock();
statusCount++;
Filter->SetStatus(false);
Filter->sectionHandler = NULL;
filters.Del(Filter, false);
Unlock();
}
void cSectionHandler::SetSource(int Source, int Transponder)
{
source = Source;
transponder = Transponder;
}
void cSectionHandler::SetStatus(bool On)
{
if (on != On) {
Lock();
statusCount++;
for (cFilter *fi = filters.First(); fi; fi = filters.Next(fi)) {
fi->SetStatus(false);
if (On)
fi->SetStatus(true);
}
Unlock();
on = On;
}
}
void cSectionHandler::Action(void)
{
active = true;
while (active) {
Lock();
int NumFilters = filterHandles.Count();
pollfd pfd[NumFilters];
for (cFilterHandle *fh = filterHandles.First(); fh; fh = filterHandles.Next(fh)) {
int i = fh->Index();
pfd[i].fd = fh->handle;
pfd[i].events = POLLIN;
}
int oldStatusCount = statusCount;
Unlock();
if (poll(pfd, NumFilters, 1000) != 0) {
for (int i = 0; i < NumFilters; i++) {
if (pfd[i].revents & POLLIN) {
cFilterHandle *fh = NULL;
LOCK_THREAD;
if (statusCount != oldStatusCount)
break;
for (fh = filterHandles.First(); fh; fh = filterHandles.Next(fh)) {
if (pfd[i].fd == fh->handle)
break;
}
if (fh) {
// Read section data:
unsigned char buf[4096]; // max. allowed size for any EIT section
int r = safe_read(fh->handle, buf, sizeof(buf));
if (r > 3) { // minimum number of bytes necessary to get section length
int len = (((buf[1] & 0x0F) << 8) | (buf[2] & 0xFF)) + 3;
if (len == r) {
// Distribute data to all attached filters:
int pid = fh->filterData.pid;
int tid = buf[0];
for (cFilter *fi = filters.First(); fi; fi = filters.Next(fi)) {
if (fi->Matches(pid, tid))
fi->Process(pid, tid, buf, len);
}
}
else
dsyslog("read incomplete section - len = %d, r = %d", len, r);
}
}
}
}
}
}
}
|
