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
|
/*
* transfer.c: Transfer mode
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: transfer.c 1.2 2002/06/23 12:56:49 kls Exp $
*/
#include "transfer.h"
//XXX+ also used in recorder.c - find a better place???
// The size of the array used to buffer video data:
// (must be larger than MINVIDEODATA - see remux.h)
#define VIDEOBUFSIZE MEGABYTE(1)
// --- cTransfer -------------------------------------------------------------
cTransfer::cTransfer(int VPid, int APid1, int APid2, int DPid1, int DPid2)
:cReceiver(0, 0, 5, VPid, APid1, APid2, DPid1, DPid2)
{
ringBuffer = new cRingBufferLinear(VIDEOBUFSIZE, true);
remux = new cRemux(VPid, APid1, APid2, DPid1, DPid2);
gotBufferReserve = false;
active = false;
}
cTransfer::~cTransfer()
{
cReceiver::Detach();
cPlayer::Detach();
delete remux;
delete ringBuffer;
}
void cTransfer::Activate(bool On)
{
if (On) {
if (!active)
Start();
}
else if (active) {
active = false;
Cancel(3);
}
}
void cTransfer::Receive(uchar *Data, int Length)
{
int p = ringBuffer->Put(Data, Length);
if (p != Length && active)
esyslog("ERROR: ring buffer overflow (%d bytes dropped)", Length - p);
}
void cTransfer::Action(void)
{
dsyslog("transfer thread started (pid=%d)", getpid());
uchar b[MINVIDEODATA];
int r = 0;
active = true;
while (active) {
//XXX+ Maybe we need this to avoid "buffer empty" log messages from the driver.
//XXX+ But then again, it appears to play just fine without this...
/*
if (!gotBufferReserve) {
if (ringBuffer->Available() < 4 * MAXFRAMESIZE) {
usleep(100000); // allow the buffer to collect some reserve
continue;
}
else
gotBufferReserve = true;
}
*/
// Get data from the buffer:
int g = ringBuffer->Get(b + r, sizeof(b) - r);
if (g > 0)
r += g;
// Play the data:
if (r > 0) {
int Count = r, Result;
const uchar *p = remux->Process(b, Count, Result);
if (p) {
//XXX+ StripAudio???
while (Result > 0 && active) {
int w = PlayVideo(p, Result);
if (w > 0) {
p += w;
Result -= w;
}
else if (w < 0 && FATALERRNO) {
LOG_ERROR;
break;
}
}
}
if (Count > 0) {
r -= Count;
if (r > 0)
memmove(b, b + Count, r);
}
}
}
dsyslog("transfer thread ended (pid=%d)", getpid());
}
void cTransfer::SetAudioPid(int APid)
{
/*XXX+
Clear();
//XXX we may need to have access to the audio device, too, in order to clear it
CHECK(ioctl(toDevice, VIDEO_CLEAR_BUFFER));
gotBufferReserve = false;
remux.SetAudioPid(APid);
XXX*/
}
// --- cTransferControl ------------------------------------------------------
cTransferControl::cTransferControl(cDevice *ReceiverDevice, int VPid, int APid1, int APid2, int DPid1, int DPid2)
:cControl(transfer = new cTransfer(VPid, APid1, APid2, DPid1, DPid2), true)
{
ReceiverDevice->AttachReceiver(transfer);
}
cTransferControl::~cTransferControl()
{
delete transfer;
}
|
