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-rw-r--r--dvbplayer.c271
1 files changed, 154 insertions, 117 deletions
diff --git a/dvbplayer.c b/dvbplayer.c
index 6e00440..9de0fca 100644
--- a/dvbplayer.c
+++ b/dvbplayer.c
@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
- * $Id: dvbplayer.c 2.3 2009/01/25 11:11:39 kls Exp $
+ * $Id: dvbplayer.c 2.11 2009/04/05 13:04:33 kls Exp $
*/
#include "dvbplayer.h"
@@ -16,59 +16,69 @@
#include "thread.h"
#include "tools.h"
-// --- cBackTrace ------------------------------------------------------------
+// --- cPtsIndex -------------------------------------------------------------
-#define AVG_FRAME_SIZE 15000 // an assumption about the average frame size
-#define DVB_BUF_SIZE (256 * 1024) // an assumption about the dvb firmware buffer size
-#define BACKTRACE_ENTRIES (DVB_BUF_SIZE / AVG_FRAME_SIZE + 20) // how many entries are needed to backtrace buffer contents
+#define PTSINDEX_ENTRIES 500
-class cBackTrace {
+class cPtsIndex {
private:
- int index[BACKTRACE_ENTRIES];
- int length[BACKTRACE_ENTRIES];
- int pos, num;
+ struct tPtsIndex {
+ uint32_t pts; // no need for 33 bit - some devices don't even supply the msb
+ int index;
+ };
+ tPtsIndex pi[PTSINDEX_ENTRIES];
+ int w, r;
+ int lastFound;
+ cMutex mutex;
public:
- cBackTrace(void);
+ cPtsIndex(void);
void Clear(void);
- void Add(int Index, int Length);
- int Get(bool Forward);
+ void Put(uint32_t Pts, int Index);
+ int FindIndex(uint32_t Pts);
};
-cBackTrace::cBackTrace(void)
+cPtsIndex::cPtsIndex(void)
{
+ lastFound = 0;
Clear();
}
-void cBackTrace::Clear(void)
+void cPtsIndex::Clear(void)
{
- pos = num = 0;
+ cMutexLock MutexLock(&mutex);
+ w = r = 0;
}
-void cBackTrace::Add(int Index, int Length)
+void cPtsIndex::Put(uint32_t Pts, int Index)
{
- index[pos] = Index;
- length[pos] = Length;
- if (++pos >= BACKTRACE_ENTRIES)
- pos = 0;
- if (num < BACKTRACE_ENTRIES)
- num++;
+ cMutexLock MutexLock(&mutex);
+ pi[w].pts = Pts;
+ pi[w].index = Index;
+ w = (w + 1) % PTSINDEX_ENTRIES;
+ if (w == r)
+ r = (r + 1) % PTSINDEX_ENTRIES;
}
-int cBackTrace::Get(bool Forward)
+int cPtsIndex::FindIndex(uint32_t Pts)
{
- int p = pos;
- int n = num;
- int l = DVB_BUF_SIZE + (Forward ? 0 : 256 * 1024); //XXX (256 * 1024) == DVB_BUF_SIZE ???
- int i = -1;
-
- while (n && l > 0) {
- if (--p < 0)
- p = BACKTRACE_ENTRIES - 1;
- i = index[p] - 1;
- l -= length[p];
- n--;
- }
- return i;
+ cMutexLock MutexLock(&mutex);
+ if (w == r)
+ return lastFound; // list is empty, let's not jump way off the last known position
+ uint32_t Delta = 0xFFFFFFFF;
+ int Index = -1;
+ for (int i = w; i != r; ) {
+ if (--i < 0)
+ i = PTSINDEX_ENTRIES - 1;
+ uint32_t d = pi[i].pts < Pts ? Pts - pi[i].pts : pi[i].pts - Pts;
+ if (d > 0x7FFFFFFF)
+ d = 0xFFFFFFFF - d; // handle rollover
+ if (d < Delta) {
+ Delta = d;
+ Index = pi[i].index;
+ }
+ }
+ lastFound = Index;
+ return Index;
}
// --- cNonBlockingFileReader ------------------------------------------------
@@ -183,8 +193,8 @@ bool cNonBlockingFileReader::WaitForDataMs(int msToWait)
#define PLAYERBUFSIZE MEGABYTE(1)
-// The number of seconds to back up when resuming an interrupted replay session:
-#define RESUMEBACKUP 10
+#define RESUMEBACKUP 10 // number of seconds to back up when resuming an interrupted replay session
+#define MAXSTUCKATEOF 3 // max. number of seconds to wait in case the device doesn't play the last frame
class cDvbPlayer : public cPlayer, cThread {
private:
@@ -193,7 +203,7 @@ private:
static int Speeds[];
cNonBlockingFileReader *nonBlockingFileReader;
cRingBufferFrame *ringBuffer;
- cBackTrace *backTrace;
+ cPtsIndex ptsIndex;
cFileName *fileName;
cIndexFile *index;
cUnbufferedFile *replayFile;
@@ -204,12 +214,13 @@ private:
ePlayModes playMode;
ePlayDirs playDir;
int trickSpeed;
- int readIndex, writeIndex;
+ int readIndex;
+ bool readIndependent;
cFrame *readFrame;
cFrame *playFrame;
void TrickSpeed(int Increment);
void Empty(void);
- bool NextFile(uchar FileNumber = 0, int FileOffset = -1);
+ bool NextFile(uint16_t FileNumber = 0, off_t FileOffset = -1);
int Resume(void);
bool Save(void);
protected:
@@ -242,7 +253,6 @@ cDvbPlayer::cDvbPlayer(const char *FileName)
{
nonBlockingFileReader = NULL;
ringBuffer = NULL;
- backTrace = NULL;
index = NULL;
cRecording Recording(FileName);
framesPerSecond = Recording.FramesPerSecond();
@@ -252,7 +262,8 @@ cDvbPlayer::cDvbPlayer(const char *FileName)
playMode = pmPlay;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
- readIndex = writeIndex = -1;
+ readIndex = -1;
+ readIndependent = false;
readFrame = NULL;
playFrame = NULL;
isyslog("replay %s", FileName);
@@ -269,17 +280,15 @@ cDvbPlayer::cDvbPlayer(const char *FileName)
delete index;
index = NULL;
}
- backTrace = new cBackTrace;
}
cDvbPlayer::~cDvbPlayer()
{
- Detach();
Save();
+ Detach();
delete readFrame; // might not have been stored in the buffer in Action()
delete index;
delete fileName;
- delete backTrace;
delete ringBuffer;
}
@@ -308,18 +317,18 @@ void cDvbPlayer::Empty(void)
LOCK_THREAD;
if (nonBlockingFileReader)
nonBlockingFileReader->Clear();
- if ((readIndex = backTrace->Get(playDir == pdForward)) < 0)
- readIndex = writeIndex;
+ if (!firstPacket) // don't set the readIndex twice if Empty() is called more than once
+ readIndex = ptsIndex.FindIndex(DeviceGetSTC());
delete readFrame; // might not have been stored in the buffer in Action()
readFrame = NULL;
playFrame = NULL;
ringBuffer->Clear();
- backTrace->Clear();
+ ptsIndex.Clear();
DeviceClear();
firstPacket = true;
}
-bool cDvbPlayer::NextFile(uchar FileNumber, int FileOffset)
+bool cDvbPlayer::NextFile(uint16_t FileNumber, off_t FileOffset)
{
if (FileNumber > 0)
replayFile = fileName->SetOffset(FileNumber, FileOffset);
@@ -346,7 +355,7 @@ int cDvbPlayer::Resume(void)
bool cDvbPlayer::Save(void)
{
if (index) {
- int Index = writeIndex;
+ int Index = ptsIndex.FindIndex(DeviceGetSTC());
if (Index >= 0) {
Index -= int(round(RESUMEBACKUP * framesPerSecond));
if (Index > 0)
@@ -384,8 +393,12 @@ void cDvbPlayer::Action(void)
int Length = 0;
bool Sleep = false;
bool WaitingForData = false;
+ time_t StuckAtEof = 0;
+ uint32_t LastStc = 0;
+ int LastReadIFrame = -1;
+ int SwitchToPlayFrame = 0;
- while (Running() && (NextFile() || readIndex >= 0 || ringBuffer->Available() || !DeviceFlush(100))) {
+ while (Running() && (NextFile() || readIndex >= 0 || ringBuffer->Available())) {
if (Sleep) {
if (WaitingForData)
nonBlockingFileReader->WaitForDataMs(3); // this keeps the CPU load low, but reacts immediately on new data
@@ -403,60 +416,47 @@ void cDvbPlayer::Action(void)
if (playMode != pmStill && playMode != pmPause) {
if (!readFrame && (replayFile || readIndex >= 0)) {
if (!nonBlockingFileReader->Reading()) {
- if (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
+ 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, NULL, &Length))
+ 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;
- Index = index->GetNextIFrame(readIndex + d, playDir == pdForward, &FileNumber, &FileOffset, &Length, TimeShiftMode);
+ 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, TimeShiftMode);
+ if (NewIndex < 0 && TimeShiftMode && playDir == pdForward)
+ SwitchToPlayFrame = Index;
+ Index = NewIndex;
+ readIndependent = true;
}
if (Index >= 0) {
- if (!NextFile(FileNumber, FileOffset)) {
- readIndex = Index;
- continue;
- }
- }
- else {
- if (!TimeShiftMode && playDir == pdForward) {
- // hit end of recording: signal end of file but don't change playMode
- readIndex = -1;
- eof = true;
+ readIndex = Index;
+ if (!NextFile(FileNumber, FileOffset))
continue;
- }
- // hit begin of recording: wait for device buffers to drain
- // before changing play mode:
- if (!DeviceFlush(100))
- continue;
- // can't call Play() here, because those functions may only be
- // called from the foreground thread - and we also don't need
- // to empty the buffer here
- DevicePlay();
- playMode = pmPlay;
- playDir = pdForward;
- continue;
}
- readIndex = Index;
+ else
+ eof = true;
}
else if (index) {
uint16_t FileNumber;
off_t FileOffset;
- readIndex++;
- if (!(index->Get(readIndex, &FileNumber, &FileOffset, NULL, &Length) && NextFile(FileNumber, FileOffset))) {
- readIndex = -1;
+ if (index->Get(readIndex + 1, &FileNumber, &FileOffset, &readIndependent, &Length) && NextFile(FileNumber, FileOffset))
+ readIndex++;
+ else
eof = true;
- continue;
- }
}
else // allows replay even if the index file is missing
- Length = MAXFRAMESIZE;
+ Length = MAXFRAMESIZE / TS_SIZE * TS_SIZE;// FIXME: use a linear ringbuffer in this case, and fix cDevice::PlayPes()
if (Length == -1)
Length = MAXFRAMESIZE; // this means we read up to EOF (see cIndex)
else if (Length > MAXFRAMESIZE) {
@@ -465,19 +465,26 @@ void cDvbPlayer::Action(void)
}
b = MALLOC(uchar, Length);
}
- int r = nonBlockingFileReader->Read(replayFile, b, Length);
- if (r > 0) {
- WaitingForData = false;
- readFrame = new cFrame(b, -r, ftUnknown, readIndex); // hands over b to the ringBuffer
- b = NULL;
- }
- else if (r == 0)
- eof = true;
- else if (r < 0 && errno == EAGAIN)
- WaitingForData = true;
- else if (r < 0 && FATALERRNO) {
- LOG_ERROR;
- break;
+ if (!eof) {
+ int r = nonBlockingFileReader->Read(replayFile, b, Length);
+ 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
+ b = NULL;
+ }
+ else if (r == 0)
+ eof = true;
+ else if (r < 0 && errno == EAGAIN)
+ WaitingForData = true;
+ else if (r < 0 && FATALERRNO) {
+ LOG_ERROR;
+ break;
+ }
}
}
@@ -506,6 +513,8 @@ void cDvbPlayer::Action(void)
p = playFrame->Data();
pc = playFrame->Count();
if (p) {
+ if (playFrame->Index() >= 0)
+ ptsIndex.Put(playFrame->Pts(), playFrame->Index());
if (firstPacket) {
if (isPesRecording) {
PlayPes(NULL, 0);
@@ -520,28 +529,57 @@ void cDvbPlayer::Action(void)
if (p) {
int w;
if (isPesRecording)
- w = PlayPes(p, pc, playMode != pmPlay && DeviceIsPlayingVideo());
+ w = PlayPes(p, pc, playMode != pmPlay && !(playMode == pmSlow && playDir == pdForward) && DeviceIsPlayingVideo());
else
- w = PlayTs(p, TS_SIZE, playMode != pmPlay && DeviceIsPlayingVideo());
+ w = PlayTs(p, pc, playMode != pmPlay && !(playMode == pmSlow && playDir == pdForward) && DeviceIsPlayingVideo());
if (w > 0) {
p += w;
pc -= w;
}
- else if (w < 0 && FATALERRNO) {
+ else if (w < 0 && FATALERRNO)
LOG_ERROR;
- break;
- }
}
if (pc <= 0) {
- writeIndex = playFrame->Index();
- backTrace->Add(playFrame->Index(), playFrame->Count());
- ringBuffer->Drop(playFrame);
+ if (!eof || (playDir != pdForward && playFrame->Index() > 0) || (playDir == pdForward && playFrame->Index() < readIndex))
+ ringBuffer->Drop(playFrame); // the very first and last frame are continously repeated to flush data through the device
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;
+ }
+ }
}
}
@@ -614,6 +652,7 @@ void cDvbPlayer::Forward(void)
Pause();
break;
}
+ Empty();
// run into pmPause
case pmStill:
case pmPause:
@@ -661,6 +700,7 @@ void cDvbPlayer::Backward(void)
Pause();
break;
}
+ Empty();
// run into pmPause
case pmStill:
case pmPause: {
@@ -696,14 +736,14 @@ void cDvbPlayer::SkipSeconds(int Seconds)
{
if (index && Seconds) {
LOCK_THREAD;
+ int Index = ptsIndex.FindIndex(DeviceGetSTC());
Empty();
- int Index = writeIndex;
if (Index >= 0) {
Index = max(Index + SecondsToFrames(Seconds, framesPerSecond), 0);
if (Index > 0)
Index = index->GetNextIFrame(Index, false, NULL, NULL, NULL, true);
if (Index >= 0)
- readIndex = writeIndex = Index - 1; // Action() will first increment it!
+ readIndex = Index - 1; // Action() will first increment it!
}
Play();
}
@@ -727,25 +767,22 @@ void cDvbPlayer::Goto(int Index, bool Still)
if (playMode == pmPause)
DevicePlay();
DeviceStillPicture(b, r);
+ ptsIndex.Put(isPesRecording ? PesGetPts(b) : TsGetPts(b, r), Index);
}
playMode = pmStill;
}
- readIndex = writeIndex = Index;
+ readIndex = Index;
}
}
bool cDvbPlayer::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
if (index) {
- if (playMode == pmStill)
- Current = max(readIndex, 0);
- else {
- Current = max(writeIndex, 0);
- if (SnapToIFrame) {
- int i1 = index->GetNextIFrame(Current + 1, false);
- int i2 = index->GetNextIFrame(Current, true);
- Current = (abs(Current - i1) <= abs(Current - i2)) ? i1 : i2;
- }
+ Current = ptsIndex.FindIndex(DeviceGetSTC());
+ if (SnapToIFrame) {
+ int i1 = index->GetNextIFrame(Current + 1, false);
+ int i2 = index->GetNextIFrame(Current, true);
+ Current = (abs(Current - i1) <= abs(Current - i2)) ? i1 : i2;
}
Total = index->Last();
return true;
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-24 22:14:09 +0000