vdr 2.6.7
transfer.c
Go to the documentation of this file.
1/*
2 * transfer.c: Transfer mode
3 *
4 * See the main source file 'vdr.c' for copyright information and
5 * how to reach the author.
6 *
7 * $Id: transfer.c 5.1 2022/12/05 14:45:51 kls Exp $
8 */
9
10#include "transfer.h"
11
12// --- cTransfer -------------------------------------------------------------
13
16{
20}
21
27
29{
30 if (On) {
32 int Index = 0;
33 while (uchar *pmt = patPmtGenerator.GetPmt(Index))
34 PlayTs(pmt, TS_SIZE);
35 }
36 else
38}
39
40#define MAXRETRIES 20 // max. number of retries for a single TS packet
41#define RETRYWAIT 5 // time (in ms) between two retries
42#define ERRORDELTA 60 // seconds before reporting lost TS packets again
43
44void cTransfer::Receive(const uchar *Data, int Length)
45{
46 if (cPlayer::IsAttached()) {
47 // Transfer Mode means "live tv", so there's no point in doing any additional
48 // buffering here. The TS packets *must* get through here! However, every
49 // now and then there may be conditions where the packet just can't be
50 // handled when offered the first time, so that's why we try several times:
51 for (int i = 0; i < MAXRETRIES; i++) {
52 if (PlayTs(Data, Length) > 0)
53 return;
55 }
58 if (time(NULL) - lastErrorReport > ERRORDELTA) {
59 esyslog("ERROR: %d TS packet(s) not accepted in Transfer Mode", numLostPackets);
61 lastErrorReport = time(NULL);
62 }
63 }
64}
65
66// --- cTransferControl ------------------------------------------------------
67
69
78
static void SleepMs(int TimeoutMs)
Creates a cCondWait object and uses it to sleep for TimeoutMs milliseconds, immediately giving up the...
Definition thread.c:72
void SetPlayer(cPlayer *Player)
Definition player.h:110
bool AttachReceiver(cReceiver *Receiver)
Attaches the given receiver to this device.
Definition device.c:1802
uchar * GetPmt(int &Index)
Returns a pointer to the Index'th TS packet of the PMT section.
Definition remux.c:600
void SetChannel(const cChannel *Channel)
Sets the Channel for which the PAT/PMT shall be generated.
Definition remux.c:585
uchar * GetPat(void)
Returns a pointer to the PAT section, which consists of exactly one TS packet.
Definition remux.c:594
void Detach(void)
Definition player.c:34
int PlayTs(const uchar *Data, int Length, bool VideoOnly=false)
Definition player.h:47
bool IsAttached(void)
Definition player.h:54
void DeviceClear(void)
Definition player.h:31
void Detach(void)
Definition receiver.c:125
static cDevice * ReceiverDevice(void)
Definition transfer.h:38
cTransfer * transfer
Definition transfer.h:32
static cDevice * receiverDevice
Definition transfer.h:33
cTransferControl(cDevice *ReceiverDevice, const cChannel *Channel)
Definition transfer.c:70
virtual void Receive(const uchar *Data, int Length)
This function is called from the cDevice we are attached to, and delivers one TS packet from the set ...
Definition transfer.c:44
time_t lastErrorReport
Definition transfer.h:19
virtual ~cTransfer()
Definition transfer.c:22
cTransfer(const cChannel *Channel)
Definition transfer.c:14
virtual void Activate(bool On)
This function is called just before the cReceiver gets attached to (On == true) and right after it ge...
Definition transfer.c:28
int numLostPackets
Definition transfer.h:20
cPatPmtGenerator patPmtGenerator
Definition transfer.h:21
#define TRANSFERPRIORITY
Definition config.h:46
#define TS_SIZE
Definition remux.h:34
unsigned char uchar
Definition tools.h:31
#define esyslog(a...)
Definition tools.h:35
#define MAXRETRIES
Definition transfer.c:40
#define RETRYWAIT
Definition transfer.c:41
#define ERRORDELTA
Definition transfer.c:42