vdr/dvbplayer.c
Klaus Schmidinger 084e16c057 Version 1.7.4
- Removed the '#define FE_CAN_2ND_GEN_MODULATION', since it was wrong and the
  flag is now in the driver, anyway.
- The full-featured DVB cards are now given the TS data directly for replay
  (thanks to Oliver Endriss for enhancing the av7110 driver to make it replay
  TS data). The patch from ftp://ftp.cadsoft.de/vdr/Developer/av7110_ts_replay__1.diff
  implements this change in the driver.
  The patch av7110_v4ldvb_api5_audiobuf_test_1.diff mentioned in version 1.7.2
  is still necessary to avoid audio and video glitches on some channels.
- Added a typecast in cUnbufferedFile::Write() to avoid an error message when
  compiling on 64 bit systems.
- Added some missing 'const' statements to cBitmap (thanks to Andreas Regel).
- Fixed returning complete PES packets in cTsToPes::GetPes() (thanks to Reinhard
  Nissl).
- Added a missing Detach() in cTransfer::Activate() (thanks to Marco Schlüßler).
- Added clearing the TS buffers in cDevice::Detach() (thanks to Marco Schlüßler).
- Fixed incrementing the continuity counter in cPatPmtGenerator::GetPmt() (thanks
  to Johann Friedrichs).
- Fixed removing deleted recordings in case there is a problem. Once a recording
  caused a problem with removing, no others were removed any more and an ongoing
  recording could fill up the disk and cause other recordings to be deleted
  automatically (reported by Reinhard Nissl).
- Added "DEFINES += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
  to Make.config.template (thanks to Johann Friedrichs for pointing this out).
  Plugin authors should add this line to their Makefile or Make.config if they use
  file access functions that need special versions for 64 bit offsets.
- The new command line option -i can be used to set an "instance id", which will
  be used to distinguish recordings of the same broadcast made by different instances
  of VDR (suggested by Frank Schmirler). This replaces the use of the "resume id"
  that was introduced in version 1.7.3.
- Added checking mutexCurrentAudioTrack to cDevice::PlayTs() (thanks to Reinhard
  Nissl for pointing this out).
- Fixed handling the pointer field in cPatPmtParser::ParsePmt() (thanks to Frank
  Schmirler - sorry I swapped two lines when adopting the original patch).
- Checking the remaining packet length after processing the pointer field in
  cPatPmtParser::ParsePat() and cPatPmtParser::ParsePmt() (suggested by Frank
  Schmirler).
- Checking the pointer field in cPatPmtParser::ParsePmt() only in 'payload start'
  packets (suggested by Frank Schmirler).
- Changed cPatPmtGenerator to make sure the PMT pid doesn't collide with any of
  the actual pids of the channel.
- Fixed cDevice::PlayTsAudio() and made cDevice::PlayTsVideo() return 0 if
  PlayVideo() didn't play anything.
- Added an 'int' typecast to calculations involving FramesPerSecond() to avoid
  compiler warnings (reported by Winfried Koehler).
- Fixed detecting frames for pure audio recordings.
- Fixed editing PES recordings. The frame type in the index.vdr file generated for
  the edited PES recording is set to 1 for I-frames and 2 for all others (P- and
  B-frames). The exact frame type doesn't matter for VDR, it only needs to know if
  it's an I-frame or not.
- The PAT/PMT is now only processed if its version changes (reported by Reinhard
  Nissl).
- Fixed handling the maximum video file size (reported by Udo Richter).
- Improved fast-forward/-rewind for audio recordings. The actual data is now sent
  to the output device, so that it can be replayed and thus cause the proper delay.
  For pure audio recordings the audio is no longer muted in fast-forward/-rewind
  mode, so that some orientation regarding the position within the recording is
  possible. There may still be some offset in the replay position displayed by the
  progress indicator when switching from fast-forward/-rewind to play mode, as well
  as in the current position during normal play mode. This is due to the various
  buffers between the player and the output device and will be addressed later.
  Note the new function cDevice::IsPlayingVideo(), which is used to inform the
  player whether there is video data in the currently replayed stream. If a derived
  cDevice class reimplements PlayTs() or PlayPes(), it also needs to make sure this
  new function works as expected.
2009-01-25 13:13:00 +01:00

847 lines
23 KiB
C

/*
* dvbplayer.c: The DVB player
*
* 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 $
*/
#include "dvbplayer.h"
#include <math.h>
#include <stdlib.h>
#include "recording.h"
#include "remux.h"
#include "ringbuffer.h"
#include "thread.h"
#include "tools.h"
// --- cBackTrace ------------------------------------------------------------
#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
class cBackTrace {
private:
int index[BACKTRACE_ENTRIES];
int length[BACKTRACE_ENTRIES];
int pos, num;
public:
cBackTrace(void);
void Clear(void);
void Add(int Index, int Length);
int Get(bool Forward);
};
cBackTrace::cBackTrace(void)
{
Clear();
}
void cBackTrace::Clear(void)
{
pos = num = 0;
}
void cBackTrace::Add(int Index, int Length)
{
index[pos] = Index;
length[pos] = Length;
if (++pos >= BACKTRACE_ENTRIES)
pos = 0;
if (num < BACKTRACE_ENTRIES)
num++;
}
int cBackTrace::Get(bool Forward)
{
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;
}
// --- cNonBlockingFileReader ------------------------------------------------
class cNonBlockingFileReader : public cThread {
private:
cUnbufferedFile *f;
uchar *buffer;
int wanted;
int length;
bool hasData;
cCondWait newSet;
cCondVar newDataCond;
cMutex newDataMutex;
protected:
void Action(void);
public:
cNonBlockingFileReader(void);
~cNonBlockingFileReader();
void Clear(void);
int Read(cUnbufferedFile *File, uchar *Buffer, int Length);
bool Reading(void) { return buffer; }
bool WaitForDataMs(int msToWait);
};
cNonBlockingFileReader::cNonBlockingFileReader(void)
:cThread("non blocking file reader")
{
f = NULL;
buffer = NULL;
wanted = length = 0;
hasData = false;
Start();
}
cNonBlockingFileReader::~cNonBlockingFileReader()
{
newSet.Signal();
Cancel(3);
free(buffer);
}
void cNonBlockingFileReader::Clear(void)
{
Lock();
f = NULL;
free(buffer);
buffer = NULL;
wanted = length = 0;
hasData = false;
Unlock();
newSet.Signal();
}
int cNonBlockingFileReader::Read(cUnbufferedFile *File, uchar *Buffer, int Length)
{
if (hasData && buffer) {
if (buffer != Buffer) {
esyslog("ERROR: cNonBlockingFileReader::Read() called with different buffer!");
errno = EINVAL;
return -1;
}
buffer = NULL;
return length;
}
if (!buffer) {
f = File;
buffer = Buffer;
wanted = Length;
length = 0;
hasData = false;
newSet.Signal();
}
errno = EAGAIN;
return -1;
}
void cNonBlockingFileReader::Action(void)
{
while (Running()) {
Lock();
if (!hasData && f && buffer) {
int r = f->Read(buffer + length, wanted - length);
if (r >= 0) {
length += r;
if (!r || length == wanted) { // r == 0 means EOF
cMutexLock NewDataLock(&newDataMutex);
hasData = true;
newDataCond.Broadcast();
}
}
else if (r < 0 && FATALERRNO) {
LOG_ERROR;
length = r; // this will forward the error status to the caller
hasData = true;
}
}
Unlock();
newSet.Wait(1000);
}
}
bool cNonBlockingFileReader::WaitForDataMs(int msToWait)
{
cMutexLock NewDataLock(&newDataMutex);
if (hasData)
return true;
return newDataCond.TimedWait(newDataMutex, msToWait);
}
// --- cDvbPlayer ------------------------------------------------------------
#define PLAYERBUFSIZE MEGABYTE(1)
// The number of seconds to back up when resuming an interrupted replay session:
#define RESUMEBACKUP 10
class cDvbPlayer : public cPlayer, cThread {
private:
enum ePlayModes { pmPlay, pmPause, pmSlow, pmFast, pmStill };
enum ePlayDirs { pdForward, pdBackward };
static int Speeds[];
cNonBlockingFileReader *nonBlockingFileReader;
cRingBufferFrame *ringBuffer;
cBackTrace *backTrace;
cFileName *fileName;
cIndexFile *index;
cUnbufferedFile *replayFile;
double framesPerSecond;
bool isPesRecording;
bool eof;
bool firstPacket;
ePlayModes playMode;
ePlayDirs playDir;
int trickSpeed;
int readIndex, writeIndex;
cFrame *readFrame;
cFrame *playFrame;
void TrickSpeed(int Increment);
void Empty(void);
bool NextFile(uchar FileNumber = 0, int FileOffset = -1);
int Resume(void);
bool Save(void);
protected:
virtual void Activate(bool On);
virtual void Action(void);
public:
cDvbPlayer(const char *FileName);
virtual ~cDvbPlayer();
bool Active(void) { return cThread::Running(); }
void Pause(void);
void Play(void);
void Forward(void);
void Backward(void);
int SkipFrames(int Frames);
void SkipSeconds(int Seconds);
void Goto(int Position, bool Still = false);
virtual double FramesPerSecond(void) { return framesPerSecond; }
virtual bool GetIndex(int &Current, int &Total, bool SnapToIFrame = false);
virtual bool GetReplayMode(bool &Play, bool &Forward, int &Speed);
};
#define MAX_VIDEO_SLOWMOTION 63 // max. arg to pass to VIDEO_SLOWMOTION // TODO is this value correct?
#define NORMAL_SPEED 4 // the index of the '1' entry in the following array
#define MAX_SPEEDS 3 // the offset of the maximum speed from normal speed in either direction
#define SPEED_MULT 12 // the speed multiplier
int cDvbPlayer::Speeds[] = { 0, -2, -4, -8, 1, 2, 4, 12, 0 };
cDvbPlayer::cDvbPlayer(const char *FileName)
:cThread("dvbplayer")
{
nonBlockingFileReader = NULL;
ringBuffer = NULL;
backTrace = NULL;
index = NULL;
cRecording Recording(FileName);
framesPerSecond = Recording.FramesPerSecond();
isPesRecording = Recording.IsPesRecording();
eof = false;
firstPacket = true;
playMode = pmPlay;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
readIndex = writeIndex = -1;
readFrame = NULL;
playFrame = NULL;
isyslog("replay %s", FileName);
fileName = new cFileName(FileName, false, false, isPesRecording);
replayFile = fileName->Open();
if (!replayFile)
return;
ringBuffer = new cRingBufferFrame(PLAYERBUFSIZE);
// Create the index file:
index = new cIndexFile(FileName, false, isPesRecording);
if (!index)
esyslog("ERROR: can't allocate index");
else if (!index->Ok()) {
delete index;
index = NULL;
}
backTrace = new cBackTrace;
}
cDvbPlayer::~cDvbPlayer()
{
Detach();
Save();
delete readFrame; // might not have been stored in the buffer in Action()
delete index;
delete fileName;
delete backTrace;
delete ringBuffer;
}
void cDvbPlayer::TrickSpeed(int Increment)
{
int nts = trickSpeed + Increment;
if (Speeds[nts] == 1) {
trickSpeed = nts;
if (playMode == pmFast)
Play();
else
Pause();
}
else if (Speeds[nts]) {
trickSpeed = nts;
int Mult = (playMode == pmSlow && playDir == pdForward) ? 1 : SPEED_MULT;
int sp = (Speeds[nts] > 0) ? Mult / Speeds[nts] : -Speeds[nts] * Mult;
if (sp > MAX_VIDEO_SLOWMOTION)
sp = MAX_VIDEO_SLOWMOTION;
DeviceTrickSpeed(sp);
}
}
void cDvbPlayer::Empty(void)
{
LOCK_THREAD;
if (nonBlockingFileReader)
nonBlockingFileReader->Clear();
if ((readIndex = backTrace->Get(playDir == pdForward)) < 0)
readIndex = writeIndex;
delete readFrame; // might not have been stored in the buffer in Action()
readFrame = NULL;
playFrame = NULL;
ringBuffer->Clear();
backTrace->Clear();
DeviceClear();
firstPacket = true;
}
bool cDvbPlayer::NextFile(uchar FileNumber, int FileOffset)
{
if (FileNumber > 0)
replayFile = fileName->SetOffset(FileNumber, FileOffset);
else if (replayFile && eof)
replayFile = fileName->NextFile();
eof = false;
return replayFile != NULL;
}
int cDvbPlayer::Resume(void)
{
if (index) {
int Index = index->GetResume();
if (Index >= 0) {
uint16_t FileNumber;
off_t FileOffset;
if (index->Get(Index, &FileNumber, &FileOffset) && NextFile(FileNumber, FileOffset))
return Index;
}
}
return -1;
}
bool cDvbPlayer::Save(void)
{
if (index) {
int Index = writeIndex;
if (Index >= 0) {
Index -= int(round(RESUMEBACKUP * framesPerSecond));
if (Index > 0)
Index = index->GetNextIFrame(Index, false);
else
Index = 0;
if (Index >= 0)
return index->StoreResume(Index);
}
}
return false;
}
void cDvbPlayer::Activate(bool On)
{
if (On) {
if (replayFile)
Start();
}
else
Cancel(9);
}
void cDvbPlayer::Action(void)
{
uchar *b = NULL;
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;
while (Running() && (NextFile() || readIndex >= 0 || ringBuffer->Available() || !DeviceFlush(100))) {
if (Sleep) {
if (WaitingForData)
nonBlockingFileReader->WaitForDataMs(3); // this keeps the CPU load low, but reacts immediately on new data
else
cCondWait::SleepMs(3); // this keeps the CPU load low
Sleep = false;
}
cPoller Poller;
if (DevicePoll(Poller, 100)) {
LOCK_THREAD;
// Read the next frame from the file:
if (playMode != pmStill && playMode != pmPause) {
if (!readFrame && (replayFile || readIndex >= 0)) {
if (!nonBlockingFileReader->Reading()) {
if (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
uint16_t FileNumber;
off_t FileOffset;
bool TimeShiftMode = index->IsStillRecording();
int Index = -1;
if (DeviceHasIBPTrickSpeed() && playDir == pdForward) {
if (index->Get(readIndex + 1, &FileNumber, &FileOffset, NULL, &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);
}
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;
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 if (index) {
uint16_t FileNumber;
off_t FileOffset;
readIndex++;
if (!(index->Get(readIndex, &FileNumber, &FileOffset, NULL, &Length) && NextFile(FileNumber, FileOffset))) {
readIndex = -1;
eof = true;
continue;
}
}
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;
}
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;
}
}
// Store the frame in the buffer:
if (readFrame) {
if (ringBuffer->Put(readFrame))
readFrame = NULL;
}
}
else
Sleep = true;
// 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 (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 && DeviceIsPlayingVideo());
else
w = PlayTs(p, TS_SIZE, playMode != pmPlay && DeviceIsPlayingVideo());
if (w > 0) {
p += w;
pc -= w;
}
else if (w < 0 && FATALERRNO) {
LOG_ERROR;
break;
}
}
if (pc <= 0) {
writeIndex = playFrame->Index();
backTrace->Add(playFrame->Index(), playFrame->Count());
ringBuffer->Drop(playFrame);
playFrame = NULL;
p = NULL;
}
}
else
Sleep = true;
}
}
cNonBlockingFileReader *nbfr = nonBlockingFileReader;
nonBlockingFileReader = NULL;
delete nbfr;
}
void cDvbPlayer::Pause(void)
{
if (playMode == pmPause || playMode == pmStill)
Play();
else {
LOCK_THREAD;
if (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
if (!(DeviceHasIBPTrickSpeed() && playDir == pdForward))
Empty();
}
DeviceFreeze();
playMode = pmPause;
}
}
void cDvbPlayer::Play(void)
{
if (playMode != pmPlay) {
LOCK_THREAD;
if (playMode == pmStill || playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
if (!(DeviceHasIBPTrickSpeed() && playDir == pdForward))
Empty();
}
DevicePlay();
playMode = pmPlay;
playDir = pdForward;
}
}
void cDvbPlayer::Forward(void)
{
if (index) {
switch (playMode) {
case pmFast:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdForward ? 1 : -1);
break;
}
else if (playDir == pdForward) {
Play();
break;
}
// run into pmPlay
case pmPlay: {
LOCK_THREAD;
if (!(DeviceHasIBPTrickSpeed() && playDir == pdForward))
Empty();
if (DeviceIsPlayingVideo())
DeviceMute();
playMode = pmFast;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
}
break;
case pmSlow:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdForward ? -1 : 1);
break;
}
else if (playDir == pdForward) {
Pause();
break;
}
// run into pmPause
case pmStill:
case pmPause:
DeviceMute();
playMode = pmSlow;
playDir = pdForward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
break;
}
}
}
void cDvbPlayer::Backward(void)
{
if (index) {
switch (playMode) {
case pmFast:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdBackward ? 1 : -1);
break;
}
else if (playDir == pdBackward) {
Play();
break;
}
// run into pmPlay
case pmPlay: {
LOCK_THREAD;
Empty();
if (DeviceIsPlayingVideo())
DeviceMute();
playMode = pmFast;
playDir = pdBackward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
}
break;
case pmSlow:
if (Setup.MultiSpeedMode) {
TrickSpeed(playDir == pdBackward ? -1 : 1);
break;
}
else if (playDir == pdBackward) {
Pause();
break;
}
// run into pmPause
case pmStill:
case pmPause: {
LOCK_THREAD;
Empty();
DeviceMute();
playMode = pmSlow;
playDir = pdBackward;
trickSpeed = NORMAL_SPEED;
TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
}
break;
}
}
}
int cDvbPlayer::SkipFrames(int Frames)
{
if (index && Frames) {
int Current, Total;
GetIndex(Current, Total, true);
int OldCurrent = Current;
// As GetNextIFrame() increments/decrements at least once, the
// destination frame (= Current + Frames) must be adjusted by
// -1/+1 respectively.
Current = index->GetNextIFrame(Current + Frames + (Frames > 0 ? -1 : 1), Frames > 0);
return Current >= 0 ? Current : OldCurrent;
}
return -1;
}
void cDvbPlayer::SkipSeconds(int Seconds)
{
if (index && Seconds) {
LOCK_THREAD;
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!
}
Play();
}
}
void cDvbPlayer::Goto(int Index, bool Still)
{
if (index) {
LOCK_THREAD;
Empty();
if (++Index <= 0)
Index = 1; // not '0', to allow GetNextIFrame() below to work!
uint16_t FileNumber;
off_t FileOffset;
int Length;
Index = index->GetNextIFrame(Index, false, &FileNumber, &FileOffset, &Length);
if (Index >= 0 && NextFile(FileNumber, FileOffset) && Still) {
uchar b[MAXFRAMESIZE];
int r = ReadFrame(replayFile, b, Length, sizeof(b));
if (r > 0) {
if (playMode == pmPause)
DevicePlay();
DeviceStillPicture(b, r);
}
playMode = pmStill;
}
readIndex = writeIndex = 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;
}
}
Total = index->Last();
return true;
}
Current = Total = -1;
return false;
}
bool cDvbPlayer::GetReplayMode(bool &Play, bool &Forward, int &Speed)
{
Play = (playMode == pmPlay || playMode == pmFast);
Forward = (playDir == pdForward);
if (playMode == pmFast || playMode == pmSlow)
Speed = Setup.MultiSpeedMode ? abs(trickSpeed - NORMAL_SPEED) : 0;
else
Speed = -1;
return true;
}
// --- cDvbPlayerControl -----------------------------------------------------
cDvbPlayerControl::cDvbPlayerControl(const char *FileName)
:cControl(player = new cDvbPlayer(FileName))
{
}
cDvbPlayerControl::~cDvbPlayerControl()
{
Stop();
}
bool cDvbPlayerControl::Active(void)
{
return player && player->Active();
}
void cDvbPlayerControl::Stop(void)
{
delete player;
player = NULL;
}
void cDvbPlayerControl::Pause(void)
{
if (player)
player->Pause();
}
void cDvbPlayerControl::Play(void)
{
if (player)
player->Play();
}
void cDvbPlayerControl::Forward(void)
{
if (player)
player->Forward();
}
void cDvbPlayerControl::Backward(void)
{
if (player)
player->Backward();
}
void cDvbPlayerControl::SkipSeconds(int Seconds)
{
if (player)
player->SkipSeconds(Seconds);
}
int cDvbPlayerControl::SkipFrames(int Frames)
{
if (player)
return player->SkipFrames(Frames);
return -1;
}
bool cDvbPlayerControl::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
if (player) {
player->GetIndex(Current, Total, SnapToIFrame);
return true;
}
return false;
}
bool cDvbPlayerControl::GetReplayMode(bool &Play, bool &Forward, int &Speed)
{
return player && player->GetReplayMode(Play, Forward, Speed);
}
void cDvbPlayerControl::Goto(int Position, bool Still)
{
if (player)
player->Goto(Position, Still);
}