void cTransfer::Action(void)
{
int PollTimeouts = 0;
uchar *p = NULL;
int Result = 0;
while (Running()) {
int Count;
uchar *b = ringBuffer->Get(Count);
if (b) {
if (ringBuffer->Available() > TRANSFERBUFSIZE * 9 / 10) {
// If the buffer runs full, we have no chance of ever catching up
// since the data comes in at the same rate as it goes out (it's "live").
// So let's clear the buffer instead of suffering from permanent
// overflows.
dsyslog("clearing transfer buffer to avoid overflows");
DeviceClear();
ringBuffer->Clear();
remux->Clear();
PlayPes(NULL, 0);
p = NULL;
continue;
}
Count = remux->Put(b, Count);
if (Count)
ringBuffer->Del(Count);
}
if (!p)
p = remux->Get(Result);
if (p) {
cPoller Poller;
if (DevicePoll(Poller, 100)) {
PollTimeouts = 0;
int w = PlayPes(p, Result);
if (w > 0) {
p += w;
Result -= w;
remux->Del(w);
if (Result <= 0)
p = NULL;
}
else if (w < 0 && FATALERRNO)
LOG_ERROR;
}
else {
PollTimeouts++;
if (PollTimeouts == POLLTIMEOUTS_BEFORE_DEVICECLEAR) {
dsyslog("clearing device because of consecutive poll timeouts");
DeviceClear();
ringBuffer->Clear();
remux->Clear();
PlayPes(NULL, 0);
p = NULL;
}
}
}
}
}
void cDvbPlayer::Action(void)
{
uchar *p = NULL;
int pc = 0;
readIndex = Resume();
if (readIndex >= 0)
isyslog("resuming replay at index %d (%s)", readIndex, *IndexToHMSF(readIndex, true, framesPerSecond));
nonBlockingFileReader = new cNonBlockingFileReader;
int Length = 0;
bool Sleep = false;
bool WaitingForData = false;
time_t StuckAtEof = 0;
uint32_t LastStc = 0;
int LastReadIFrame = -1;
int SwitchToPlayFrame = 0;
if (pauseLive)
Goto(0, true);
while (Running()) {
if (WaitingForData)
nonBlockingFileReader->WaitForDataMs(3); // this keeps the CPU load low, but reacts immediately on new data
else if (Sleep) {
cPoller Poller;
DevicePoll(Poller, 10);
Sleep = false;
if (playMode == pmStill || playMode == pmPause)
cCondWait::SleepMs(3);
}
{
LOCK_THREAD;
// Read the next frame from the file:
if (playMode != pmStill && playMode != pmPause) {
if (!readFrame && (replayFile || readIndex >= 0)) {
if (!nonBlockingFileReader->Reading()) {
if (!SwitchToPlayFrame && (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward))) {
uint16_t FileNumber;
off_t FileOffset;
bool TimeShiftMode = index->IsStillRecording();
int Index = -1;
readIndependent = false;
if (DeviceHasIBPTrickSpeed() && playDir == pdForward) {
if (index->Get(readIndex + 1, &FileNumber, &FileOffset, &readIndependent, &Length))
Index = readIndex + 1;
}
else {
int d = int(round(0.4 * framesPerSecond));
if (playDir != pdForward)
d = -d;
int NewIndex = readIndex + d;
if (NewIndex <= 0 && readIndex > 0)
NewIndex = 1; // make sure the very first frame is delivered
NewIndex = index->GetNextIFrame(NewIndex, playDir == pdForward, &FileNumber, &FileOffset, &Length);
if (NewIndex < 0 && TimeShiftMode && playDir == pdForward)
SwitchToPlayFrame = readIndex;
Index = NewIndex;
readIndependent = true;
}
if (Index >= 0) {
readIndex = Index;
if (!NextFile(FileNumber, FileOffset))
continue;
}
else if (!(TimeShiftMode && playDir == pdForward))
eof = true;
}
else if (index) {
uint16_t FileNumber;
off_t FileOffset;
if (index->Get(readIndex + 1, &FileNumber, &FileOffset, &readIndependent, &Length) && NextFile(FileNumber, FileOffset))
readIndex++;
else
eof = true;
}
else // allows replay even if the index file is missing
Length = MAXFRAMESIZE;
if (Length == -1)
Length = MAXFRAMESIZE; // this means we read up to EOF (see cIndex)
else if (Length > MAXFRAMESIZE) {
esyslog("ERROR: frame larger than buffer (%d > %d)", Length, MAXFRAMESIZE);
Length = MAXFRAMESIZE;
}
if (!eof)
nonBlockingFileReader->Request(replayFile, Length);
}
if (!eof) {
uchar *b = NULL;
int r = nonBlockingFileReader->Result(&b);
if (r > 0) {
WaitingForData = false;
uint32_t Pts = 0;
if (readIndependent) {
Pts = isPesRecording ? PesGetPts(b) : TsGetPts(b, r);
LastReadIFrame = readIndex;
}
readFrame = new cFrame(b, -r, ftUnknown, readIndex, Pts); // hands over b to the ringBuffer
}
else if (r < 0) {
if (errno == EAGAIN)
WaitingForData = true;
else if (FATALERRNO) {
LOG_ERROR;
break;
}
}
else
eof = true;
}
}
// Store the frame in the buffer:
if (readFrame) {
if (ringBuffer->Put(readFrame))
readFrame = NULL;
else
Sleep = true;
}
}
else
Sleep = true;
if (dropFrame) {
if (!eof || (playDir != pdForward && dropFrame->Index() > 0) || (playDir == pdForward && dropFrame->Index() < readIndex)) {
ringBuffer->Drop(dropFrame); // the very first and last frame are continously repeated to flush data through the device
dropFrame = NULL;
}
}
// Get the next frame from the buffer:
if (!playFrame) {
playFrame = ringBuffer->Get();
p = NULL;
pc = 0;
}
// Play the frame:
if (playFrame) {
if (!p) {
p = playFrame->Data();
pc = playFrame->Count();
if (p) {
if (playFrame->Index() >= 0 && playFrame->Pts() != 0)
ptsIndex.Put(playFrame->Pts(), playFrame->Index());
if (firstPacket) {
if (isPesRecording) {
PlayPes(NULL, 0);
cRemux::SetBrokenLink(p, pc);
}
else
PlayTs(NULL, 0);
firstPacket = false;
}
}
}
if (p) {
int w;
if (isPesRecording)
w = PlayPes(p, pc, playMode != pmPlay && !(playMode == pmSlow && playDir == pdForward) && DeviceIsPlayingVideo());
else
w = PlayTs(p, pc, playMode != pmPlay && !(playMode == pmSlow && playDir == pdForward) && DeviceIsPlayingVideo());
if (w > 0) {
p += w;
pc -= w;
}
else if (w < 0 && FATALERRNO)
LOG_ERROR;
else
Sleep = true;
}
if (pc <= 0) {
dropFrame = playFrame;
playFrame = NULL;
p = NULL;
}
}
else
Sleep = true;
// Handle hitting begin/end of recording:
if (eof || SwitchToPlayFrame) {
bool SwitchToPlay = false;
uint32_t Stc = DeviceGetSTC();
if (Stc != LastStc)
StuckAtEof = 0;
else if (!StuckAtEof)
StuckAtEof = time(NULL);
else if (time(NULL) - StuckAtEof > MAXSTUCKATEOF) {
if (playDir == pdForward)
break; // automatically stop at end of recording
SwitchToPlay = true;
}
LastStc = Stc;
int Index = ptsIndex.FindIndex(Stc);
if (playDir == pdForward && !SwitchToPlayFrame) {
if (Index >= LastReadIFrame)
break; // automatically stop at end of recording
}
else if (Index <= 0 || SwitchToPlayFrame && Index >= SwitchToPlayFrame)
SwitchToPlay = true;
if (SwitchToPlay) {
if (!SwitchToPlayFrame)
Empty();
DevicePlay();
playMode = pmPlay;
playDir = pdForward;
SwitchToPlayFrame = 0;
}
}
}
}
cNonBlockingFileReader *nbfr = nonBlockingFileReader;
nonBlockingFileReader = NULL;
delete nbfr;
}