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
|
/*
* $Id: streamer.c,v 1.21 2010/07/30 10:01:11 schmirl Exp $
*/
#include <vdr/ringbuffer.h>
#include <vdr/device.h>
#include <sys/types.h>
#include <unistd.h>
#include "server/streamer.h"
#include "server/suspend.h"
#include "server/setup.h"
#include "tools/socket.h"
#include "tools/select.h"
#include "common.h"
// --- cStreamdevBuffer -------------------------------------------------------
cStreamdevBuffer::cStreamdevBuffer(int Size, int Margin, bool Statistics, const char *Description):
cRingBufferLinear(Size, Margin, Statistics, Description)
{
}
// --- cStreamdevWriter -------------------------------------------------------
cStreamdevWriter::cStreamdevWriter(cTBSocket *Socket,
cStreamdevStreamer *Streamer):
cThread("streamdev-writer"),
m_Streamer(Streamer),
m_Socket(Socket)
{
}
cStreamdevWriter::~cStreamdevWriter()
{
Dprintf("destructing writer\n");
if (Running())
Cancel(3);
}
void cStreamdevWriter::Action(void)
{
cTBSelect sel;
Dprintf("Writer start\n");
int max = 0;
uchar *block = NULL;
int count, offset = 0;
int timeout = 0;
SetPriority(-3);
sel.Clear();
sel.Add(*m_Socket, true);
while (Running()) {
if (block == NULL) {
block = m_Streamer->Get(count);
offset = 0;
// still no data - are we done?
if (block == NULL && !m_Streamer->IsReceiving() && timeout++ > 20) {
esyslog("streamdev-server: streamer done - writer exiting");
break;
}
}
if (block != NULL) {
if (sel.Select(600) == -1) {
if (errno == ETIMEDOUT && timeout++ < 20)
continue; // still Running()?
esyslog("ERROR: streamdev-server: couldn't send data: %m");
break;
}
timeout = 0;
if (sel.CanWrite(*m_Socket)) {
int written;
int pkgsize = count;
// SOCK_DGRAM indicates multicast
if (m_Socket->Type() == SOCK_DGRAM) {
// don't fragment multicast packets
// max. payload on standard local ethernet is 1416 to 1456 bytes
// and some STBs expect complete TS packets
// so let's always limit to 7 * TS_SIZE = 1316
if (pkgsize > 7 * TS_SIZE)
pkgsize = 7 * TS_SIZE;
else
pkgsize -= pkgsize % TS_SIZE;
}
if ((written = m_Socket->Write(block + offset, pkgsize)) == -1) {
esyslog("ERROR: streamdev-server: couldn't send %d bytes: %m", pkgsize);
break;
}
// statistics
if (count > max)
max = count;
offset += written;
count -= written;
// less than one TS packet left:
// delete what we've written so far and get next chunk
if (count < TS_SIZE) {
m_Streamer->Del(offset);
block = NULL;
}
}
}
}
m_Socket->Close();
Dprintf("Max. Transmit Blocksize was: %d\n", max);
}
// --- cStreamdevStreamer -----------------------------------------------------
cStreamdevStreamer::cStreamdevStreamer(const char *Name, const cServerConnection *Connection):
cThread(Name),
m_Connection(Connection),
m_Writer(NULL),
m_SendBuffer(new cStreamdevBuffer(WRITERBUFSIZE, TS_SIZE * 2))
{
m_SendBuffer->SetTimeouts(100, 100);
}
cStreamdevStreamer::~cStreamdevStreamer()
{
Dprintf("Desctructing streamer\n");
delete m_SendBuffer;
}
void cStreamdevStreamer::Start(cTBSocket *Socket)
{
Dprintf("start writer\n");
m_Writer = new cStreamdevWriter(Socket, this);
m_Writer->Start();
if (!Active()) {
Dprintf("start streamer\n");
cThread::Start();
}
Attach();
}
void cStreamdevStreamer::Stop(void)
{
Detach();
if (Running()) {
Dprintf("stop streamer\n");
Cancel(3);
}
Dprintf("stop writer\n");
DELETENULL(m_Writer);
}
void cStreamdevStreamer::Action(void)
{
SetPriority(-3);
while (Running()) {
int got;
uchar *block = GetFromReceiver(got);
if (block) {
int count = Put(block, got);
if (count)
DelFromReceiver(count);
}
}
}
|
