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decoderbase.cpp
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decoderbase.cpp
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#include <unistd.h>
#include <math.h>
#include <algorithm>
using namespace std;
#include "mythconfig.h"
#include "mythplayer.h"
#include "remoteencoder.h"
#include "mythdbcon.h"
#include "mythlogging.h"
#include "decoderbase.h"
#include "programinfo.h"
#include "livetvchain.h"
#include "iso639.h"
#include "DVD/dvdringbuffer.h"
#include "Bluray/bdringbuffer.h"
#define LOC QString("Dec: ")
DecoderBase::DecoderBase(MythPlayer *parent, const ProgramInfo &pginfo)
: m_parent(parent), m_playbackinfo(new ProgramInfo(pginfo)),
m_audio(m_parent->GetAudio()), ringBuffer(NULL),
current_width(640), current_height(480),
current_aspect(1.33333), fps(29.97),
bitrate(4000),
framesPlayed(0), framesRead(0),
totalDuration(AVRationalInit(0)),
lastKey(0), keyframedist(-1), indexOffset(0),
trackTotalDuration(false),
ateof(kEofStateNone), exitafterdecoded(false), transcoding(false),
hasFullPositionMap(false), recordingHasPositionMap(false),
posmapStarted(false), positionMapType(MARK_UNSET),
m_positionMapLock(QMutex::Recursive),
dontSyncPositionMap(false),
seeksnap(UINT64_MAX), livetv(false), watchingrecording(false),
hasKeyFrameAdjustTable(false), lowbuffers(false),
getrawframes(false), getrawvideo(false),
errored(false), waitingForChange(false), readAdjust(0),
justAfterChange(false),
video_inverted(false),
decodeAllSubtitles(false),
// language preference
languagePreference(iso639_get_language_key_list())
{
ResetTracks();
tracks[kTrackTypeAudio].push_back(StreamInfo(0, 0, 0, 0, 0));
tracks[kTrackTypeCC608].push_back(StreamInfo(0, 0, 0, 1, 0));
tracks[kTrackTypeCC608].push_back(StreamInfo(0, 0, 2, 3, 0));
}
DecoderBase::~DecoderBase()
{
if (m_playbackinfo)
delete m_playbackinfo;
}
void DecoderBase::SetProgramInfo(const ProgramInfo &pginfo)
{
if (m_playbackinfo)
delete m_playbackinfo;
m_playbackinfo = new ProgramInfo(pginfo);
}
void DecoderBase::Reset(bool reset_video_data, bool seek_reset, bool reset_file)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Reset: Video %1, Seek %2, File %3")
.arg(reset_video_data).arg(seek_reset).arg(reset_file));
if (seek_reset)
{
SeekReset(0, 0, true, true);
}
if (reset_video_data)
{
ResetPosMap();
framesPlayed = 0;
framesRead = 0;
totalDuration = AVRationalInit(0);
dontSyncPositionMap = false;
}
if (reset_file)
{
waitingForChange = false;
SetEofState(kEofStateNone);
}
}
void DecoderBase::SeekReset(long long, uint, bool, bool)
{
readAdjust = 0;
}
void DecoderBase::SetWatchingRecording(bool mode)
{
bool wereWatchingRecording = watchingrecording;
// When we switch from WatchingRecording to WatchingPreRecorded,
// re-get the positionmap
posmapStarted = false;
watchingrecording = mode;
if (wereWatchingRecording && !watchingrecording)
SyncPositionMap();
}
bool DecoderBase::PosMapFromDb(void)
{
if (!m_playbackinfo)
return false;
// Overwrites current positionmap with entire contents of database
frm_pos_map_t posMap, durMap;
if (ringBuffer && ringBuffer->IsDVD())
{
long long totframes;
keyframedist = 15;
fps = ringBuffer->DVD()->GetFrameRate();
if (fps < 26 && fps > 24)
keyframedist = 12;
totframes = (long long)(ringBuffer->DVD()->GetTotalTimeOfTitle() * fps);
posMap[totframes] = ringBuffer->DVD()->GetTotalReadPosition();
}
else if (ringBuffer && ringBuffer->IsBD())
{
long long totframes;
keyframedist = 15;
fps = ringBuffer->BD()->GetFrameRate();
if (fps < 26 && fps > 24)
keyframedist = 12;
totframes = (long long)(ringBuffer->BD()->GetTotalTimeOfTitle() * fps);
posMap[totframes] = ringBuffer->BD()->GetTotalReadPosition();
#if 0
LOG(VB_PLAYBACK, LOG_DEBUG, LOC +
QString("%1 TotalTimeOfTitle() in ticks, %2 TotalReadPosition() "
"in bytes, %3 is fps")
.arg(ringBuffer->BD()->GetTotalTimeOfTitle())
.arg(ringBuffer->BD()->GetTotalReadPosition()).arg(fps));
#endif
}
else if ((positionMapType == MARK_UNSET) ||
(keyframedist == -1))
{
m_playbackinfo->QueryPositionMap(posMap, MARK_GOP_BYFRAME);
if (!posMap.empty())
{
positionMapType = MARK_GOP_BYFRAME;
if (keyframedist == -1)
keyframedist = 1;
}
else
{
m_playbackinfo->QueryPositionMap(posMap, MARK_GOP_START);
if (!posMap.empty())
{
positionMapType = MARK_GOP_START;
if (keyframedist == -1)
{
keyframedist = 15;
if (fps < 26 && fps > 24)
keyframedist = 12;
}
}
else
{
m_playbackinfo->QueryPositionMap(posMap, MARK_KEYFRAME);
if (!posMap.empty())
{
// keyframedist should be set in the fileheader so no
// need to try to determine it in this case
positionMapType = MARK_KEYFRAME;
}
}
}
}
else
{
m_playbackinfo->QueryPositionMap(posMap, positionMapType);
}
if (posMap.empty())
return false; // no position map in recording
m_playbackinfo->QueryPositionMap(durMap, MARK_DURATION_MS);
QMutexLocker locker(&m_positionMapLock);
m_positionMap.clear();
m_positionMap.reserve(posMap.size());
for (frm_pos_map_t::const_iterator it = posMap.begin();
it != posMap.end(); ++it)
{
PosMapEntry e = {it.key(), it.key() * keyframedist, *it};
m_positionMap.push_back(e);
}
if (!m_positionMap.empty() && !(ringBuffer && ringBuffer->IsDisc()))
indexOffset = m_positionMap[0].index;
if (!m_positionMap.empty())
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Position map filled from DB to: %1")
.arg(m_positionMap.back().index));
}
uint64_t last = 0;
for (frm_pos_map_t::const_iterator it = durMap.begin();
it != durMap.end(); ++it)
{
m_frameToDurMap[it.key()] = it.value();
m_durToFrameMap[it.value()] = it.key();
last = it.key();
}
if (!m_durToFrameMap.empty())
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Duration map filled from DB to: %1").arg(last));
}
return true;
}
/** \fn DecoderBase::PosMapFromEnc(void)
* \brief Queries encoder for position map data
* that has not been committed to the DB yet.
*
* PosMapFromDb(void) must be called first in order
* to set positionMapType and keyframedist correctly.
*
*/
bool DecoderBase::PosMapFromEnc(void)
{
if (!m_parent || keyframedist < 1)
return false;
unsigned long long start = 0;
{
QMutexLocker locker(&m_positionMapLock);
if (!m_positionMap.empty())
start = m_positionMap.back().index + 1;
}
frm_pos_map_t posMap, durMap;
if (!m_parent->PosMapFromEnc(start, posMap, durMap))
return false;
QMutexLocker locker(&m_positionMapLock);
// append this new position map to class's
m_positionMap.reserve(m_positionMap.size() + posMap.size());
uint64_t last_index = m_positionMap.back().index;
for (frm_pos_map_t::const_iterator it = posMap.begin();
it != posMap.end(); ++it)
{
if (it.key() <= last_index)
continue;
PosMapEntry e = {it.key(), it.key() * keyframedist, *it};
m_positionMap.push_back(e);
}
if (!m_positionMap.empty() && !(ringBuffer && ringBuffer->IsDisc()))
indexOffset = m_positionMap[0].index;
if (!m_positionMap.empty())
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Position map filled from Encoder to: %1")
.arg(m_positionMap.back().index));
}
bool isEmpty = m_frameToDurMap.empty();
if (!isEmpty)
{
frm_pos_map_t::const_iterator it = m_frameToDurMap.end();
--it;
last_index = it.key();
}
for (frm_pos_map_t::const_iterator it = durMap.begin();
it != durMap.end(); ++it)
{
if (!isEmpty && it.key() <= last_index)
continue; // we released the m_positionMapLock for a few ms...
m_frameToDurMap[it.key()] = it.value();
m_durToFrameMap[it.value()] = it.key();
}
if (!m_frameToDurMap.empty())
{
frm_pos_map_t::const_iterator it = m_frameToDurMap.end();
--it;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Duration map filled from Encoder to: %1").arg(it.key()));
}
return true;
}
unsigned long DecoderBase::GetPositionMapSize(void) const
{
QMutexLocker locker(&m_positionMapLock);
return (unsigned long) m_positionMap.size();
}
/** \fn DecoderBase::SyncPositionMap()
* \brief Updates the position map used for skipping frames.
*
* There are different sources for position maps,
* depending on where we are getting the stream from.
*
* positionmap sources:
* live tv:
* 1. remote encoder
* 2. stream parsing
* decide keyframedist based on samples from remote encoder
*
* watching recording:
* 1. initial fill from db
* 2. incremental from remote encoder, until it finishes recording
* 3. then db again (which should be the final time)
* 4. stream parsing
* decide keyframedist based on which table in db
*
* watching prerecorded:
* 1. initial fill from db is all that's needed
*/
bool DecoderBase::SyncPositionMap(void)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Resyncing position map. posmapStarted = %1"
" livetv(%2) watchingRec(%3)")
.arg((int) posmapStarted).arg(livetv).arg(watchingrecording));
if (dontSyncPositionMap)
return false;
unsigned long old_posmap_size = GetPositionMapSize();
unsigned long new_posmap_size = old_posmap_size;
if (livetv || watchingrecording)
{
if (!posmapStarted)
{
// starting up -- try first from database
PosMapFromDb();
new_posmap_size = GetPositionMapSize();
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SyncPositionMap watchingrecording, from DB: "
"%1 entries") .arg(new_posmap_size));
}
// always try to get more from encoder
if (!PosMapFromEnc())
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SyncPositionMap watchingrecording no entries "
"from encoder, try DB"));
PosMapFromDb(); // try again from db
}
new_posmap_size = GetPositionMapSize();
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SyncPositionMap watchingrecording total: %1 entries")
.arg(new_posmap_size));
}
else
{
// watching prerecorded ... just get from db
if (!posmapStarted)
{
PosMapFromDb();
new_posmap_size = GetPositionMapSize();
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SyncPositionMap prerecorded, from DB: %1 entries")
.arg(new_posmap_size));
}
}
bool ret_val = new_posmap_size > old_posmap_size;
if (ret_val && keyframedist > 0)
{
long long totframes = 0;
int length = 0;
if (ringBuffer && ringBuffer->IsDVD())
{
length = ringBuffer->DVD()->GetTotalTimeOfTitle();
QMutexLocker locker(&m_positionMapLock);
totframes = m_positionMap.back().index;
}
else if (ringBuffer && ringBuffer->IsBD())
{
length = ringBuffer->BD()->GetTotalTimeOfTitle();
QMutexLocker locker(&m_positionMapLock);
totframes = m_positionMap.back().index;
}
else
{
QMutexLocker locker(&m_positionMapLock);
totframes = m_positionMap.back().index * keyframedist;
if (fps)
length = (int)((totframes * 1.0) / fps);
}
m_parent->SetFileLength(length, totframes);
m_parent->SetKeyframeDistance(keyframedist);
posmapStarted = true;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("SyncPositionMap, new totframes: %1, new length: %2, "
"posMap size: %3")
.arg(totframes).arg(length).arg(new_posmap_size));
}
recordingHasPositionMap |= (0 != new_posmap_size);
{
QMutexLocker locker(&m_positionMapLock);
m_lastPositionMapUpdate = QDateTime::currentDateTime();
}
return ret_val;
}
// returns true iff found exactly
// searches position if search_pos, index otherwise
bool DecoderBase::FindPosition(long long desired_value, bool search_adjusted,
int &lower_bound, int &upper_bound)
{
QMutexLocker locker(&m_positionMapLock);
// Binary search
long long size = (long long) m_positionMap.size();
long long lower = -1;
long long upper = size;
if (!search_adjusted && keyframedist > 0)
desired_value /= keyframedist;
while (upper - 1 > lower)
{
long long i = (upper + lower) / 2;
long long value;
if (search_adjusted)
value = m_positionMap[i].adjFrame;
else
value = m_positionMap[i].index - indexOffset;
if (value == desired_value)
{
// found it
upper_bound = i;
lower_bound = i;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("FindPosition(%1, search%2 adjusted)")
.arg(desired_value).arg((search_adjusted) ? "" : " not") +
QString(" --> [%1:%2(%3)]")
.arg(i).arg(GetKey(m_positionMap[i]))
.arg(m_positionMap[i].pos));
return true;
}
else if (value > desired_value)
upper = i;
else
lower = i;
}
// Did not find it exactly -- return bounds
if (search_adjusted)
{
while (lower >= 0 && m_positionMap[lower].adjFrame > desired_value)
lower--;
while (upper < size && m_positionMap[upper].adjFrame < desired_value)
upper++;
}
else
{
while (lower >= 0 &&
(m_positionMap[lower].index - indexOffset) > desired_value)
lower--;
while (upper < size &&
(m_positionMap[upper].index - indexOffset) < desired_value)
upper++;
}
// keep in bounds
lower = max(lower, 0LL);
upper = min(upper, size - 1LL);
upper_bound = upper;
lower_bound = lower;
bool empty = m_positionMap.empty();
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("FindPosition(%1, search%3 adjusted)")
.arg(desired_value).arg((search_adjusted) ? "" : " not") +
QString(" --> \n\t\t\t[%1:%2(%3),%4:%5(%6)]")
.arg(lower_bound)
.arg(empty ? -1 : GetKey(m_positionMap[lower_bound]))
.arg(m_positionMap[lower_bound].pos)
.arg(upper_bound)
.arg(empty ? -1 : GetKey(m_positionMap[upper_bound]))
.arg(empty ? -1 : m_positionMap[upper_bound].pos));
return false;
}
uint64_t DecoderBase::SavePositionMapDelta(uint64_t first, uint64_t last)
{
MythTimer ttm, ctm, stm;
ttm.start();
QMutexLocker locker(&m_positionMapLock);
MarkTypes type = positionMapType;
uint64_t saved = 0;
if (!m_playbackinfo || (positionMapType == MARK_UNSET))
return saved;
ctm.start();
frm_pos_map_t posMap;
for (uint i = 0; i < m_positionMap.size(); i++)
{
if ((uint64_t)m_positionMap[i].index < first)
continue;
if ((uint64_t)m_positionMap[i].index > last)
break;
posMap[m_positionMap[i].index] = m_positionMap[i].pos;
saved++;
}
frm_pos_map_t durMap;
for (frm_pos_map_t::const_iterator it = m_frameToDurMap.begin();
it != m_frameToDurMap.end(); ++it)
{
if (it.key() < first)
continue;
if (it.key() > last)
break;
durMap[it.key()] = it.value();
}
locker.unlock();
stm.start();
m_playbackinfo->SavePositionMapDelta(posMap, type);
m_playbackinfo->SavePositionMapDelta(durMap, MARK_DURATION_MS);
#if 0
LOG(VB_GENERAL, LOG_DEBUG, LOC +
QString("Saving position map [%1,%2] w/%3 keyframes, "
"took (%4,%5,%6) ms")
.arg(first).arg(last).arg(saved)
.arg(ttm.elapsed())
.arg(ctm.elapsed()-stm.elapsed()).arg(stm.elapsed()));
#endif
return saved;
}
bool DecoderBase::DoRewind(long long desiredFrame, bool discardFrames)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("DoRewind(%1 (%2), %3 discard frames)")
.arg(desiredFrame).arg(framesPlayed)
.arg((discardFrames) ? "do" : "don't"));
if (!DoRewindSeek(desiredFrame))
return false;
framesPlayed = lastKey;
framesRead = lastKey;
// Do any Extra frame-by-frame seeking for exactseeks mode
// And flush pre-seek frame if we are allowed to and need to..
int normalframes = (uint64_t)(desiredFrame - (framesPlayed - 1)) > seeksnap
? desiredFrame - framesPlayed : 0;
normalframes = max(normalframes, 0);
SeekReset(lastKey, normalframes, true, discardFrames);
if (discardFrames || (ringBuffer && ringBuffer->IsDisc()))
m_parent->SetFramesPlayed(framesPlayed+1);
return true;
}
long long DecoderBase::GetKey(const PosMapEntry &e) const
{
long long kf = (ringBuffer && ringBuffer->IsDisc()) ?
1LL : keyframedist;
return (hasKeyFrameAdjustTable) ? e.adjFrame :(e.index - indexOffset) * kf;
}
bool DecoderBase::DoRewindSeek(long long desiredFrame)
{
ConditionallyUpdatePosMap(desiredFrame);
if (!GetPositionMapSize())
{
LOG(VB_GENERAL, LOG_ERR, LOC + "PosMap is empty, can't seek");
return false;
}
if (!ringBuffer)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "No ringBuffer yet, can't seek");
return false;
}
// Find keyframe <= desiredFrame, store in lastKey (frames)
int pre_idx, post_idx;
FindPosition(desiredFrame, hasKeyFrameAdjustTable, pre_idx, post_idx);
PosMapEntry e;
{
QMutexLocker locker(&m_positionMapLock);
PosMapEntry e_pre = m_positionMap[pre_idx];
PosMapEntry e_post = m_positionMap[post_idx];
int pos_idx = pre_idx;
e = e_pre;
if (((uint64_t) (GetKey(e_post) - desiredFrame)) <= seeksnap &&
framesPlayed - 1 > GetKey(e_post) &&
GetKey(e_post) - desiredFrame <= desiredFrame - GetKey(e_pre))
{
// Snap to the right if e_post is within snap distance and
// is at least as close a snap as e_pre. Take into
// account that if framesPlayed has already reached
// e_post, we should only snap to the left.
pos_idx = post_idx;
e = e_post;
}
lastKey = GetKey(e);
// ??? Don't rewind past the beginning of the file
while (e.pos < 0)
{
pos_idx++;
if (pos_idx >= (int)m_positionMap.size())
return false;
e = m_positionMap[pos_idx];
lastKey = GetKey(e);
}
}
ringBuffer->Seek(e.pos, SEEK_SET);
return true;
}
void DecoderBase::ResetPosMap(void)
{
QMutexLocker locker(&m_positionMapLock);
posmapStarted = false;
m_positionMap.clear();
}
long long DecoderBase::GetLastFrameInPosMap(void) const
{
long long last_frame = 0;
QMutexLocker locker(&m_positionMapLock);
if (!m_positionMap.empty())
last_frame = GetKey(m_positionMap.back());
return last_frame;
}
long long DecoderBase::ConditionallyUpdatePosMap(long long desiredFrame)
{
long long last_frame = GetLastFrameInPosMap();
if (desiredFrame < 0)
return last_frame;
// Resync keyframe map if we are trying to seek to a frame
// not yet equalled or exceeded in the seek map.
if (desiredFrame < last_frame)
return last_frame;
LOG(VB_PLAYBACK, LOG_INFO, LOC +
"ConditionallyUpdatePosMap: Not enough info in positionMap," +
QString("\n\t\t\twe need frame %1 but highest we have is %2.")
.arg(desiredFrame).arg(last_frame));
SyncPositionMap();
last_frame = GetLastFrameInPosMap();
if (desiredFrame > last_frame)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
"ConditionallyUpdatePosMap: Still not "
"enough info in positionMap after sync, " +
QString("\n\t\t\twe need frame %1 but highest we have "
"is %2. Will attempt to seek frame-by-frame")
.arg(desiredFrame).arg(last_frame));
}
return last_frame;
}
/** \fn DecoderBase::DoFastForward(long long, bool)
* \brief Skips ahead or rewinds to desiredFrame.
*
* If discardFrames is true and cached frames are released and playback
* continues at the desiredFrame, if it is not any interviening frames
* between the last frame already in the buffer and the desiredFrame are
* released, but none of the frames decoded at the time this is called
* are released.
*/
bool DecoderBase::DoFastForward(long long desiredFrame, bool discardFrames)
{
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("DoFastForward(%1 (%2), %3 discard frames)")
.arg(desiredFrame).arg(framesPlayed)
.arg((discardFrames) ? "do" : "don't"));
if (!ringBuffer)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "No ringBuffer yet, can't fast forward");
return false;
}
if (ringBuffer->IsDVD() &&
!ringBuffer->IsInDiscMenuOrStillFrame() &&
ringBuffer->DVD()->TitleTimeLeft() < 5)
{
return false;
}
// Rewind if we have already played the desiredFrame. The +1 is for
// MPEG4 NUV files, which need to decode an extra frame sometimes.
// This shouldn't effect how this works in general because this is
// only triggered on the first keyframe/frame skip when paused. At
// that point the decoding is more than one frame ahead of display.
if (desiredFrame+1 < framesPlayed)
return DoRewind(desiredFrame, discardFrames);
desiredFrame = max(desiredFrame, framesPlayed);
// Save rawframe state, for later restoration...
bool oldrawstate = getrawframes;
getrawframes = false;
ConditionallyUpdatePosMap(desiredFrame);
// Fetch last keyframe in position map
long long last_frame = GetLastFrameInPosMap();
// If the desiredFrame is past the end of the position map,
// do some frame-by-frame seeking until we get to it.
bool needflush = false;
if (desiredFrame > last_frame)
{
LOG(VB_GENERAL, LOG_NOTICE, LOC +
QString("DoFastForward(): desiredFrame(%1) > last_frame(%2)")
.arg(desiredFrame).arg(last_frame));
if (desiredFrame - last_frame > 32)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "DoFastForward(): "
"Desired frame is way past the end of the keyframe map!"
"\n\t\t\tSeeking to last keyframe instead.");
desiredFrame = last_frame;
}
needflush = true;
// Handle non-frame-by-frame seeking
DoFastForwardSeek(last_frame, needflush);
exitafterdecoded = true; // don't actualy get a frame
while ((desiredFrame > last_frame) && !ateof)
{
GetFrame(kDecodeNothing); // don't need to return frame...
SyncPositionMap();
last_frame = GetLastFrameInPosMap();
}
exitafterdecoded = false; // allow frames to be returned again
if (ateof)
{
// Re-enable rawframe state if it was enabled before FF
getrawframes = oldrawstate;
return false;
}
}
{
QMutexLocker locker(&m_positionMapLock);
if (m_positionMap.empty())
{
// Re-enable rawframe state if it was enabled before FF
getrawframes = oldrawstate;
return false;
}
}
// Handle non-frame-by-frame seeking
DoFastForwardSeek(desiredFrame, needflush);
// Do any Extra frame-by-frame seeking for exactseeks mode
// And flush pre-seek frame if we are allowed to and need to..
int normalframes = (uint64_t)(desiredFrame - (framesPlayed - 1)) > seeksnap
? desiredFrame - framesPlayed : 0;
normalframes = max(normalframes, 0);
SeekReset(lastKey, normalframes, needflush, discardFrames);
if (discardFrames)
m_parent->SetFramesPlayed(framesPlayed+1);
// Re-enable rawframe state if it was enabled before FF
getrawframes = oldrawstate;
return true;
}
/** \fn DecoderBase::DoFastForwardSeek(long long,bool&)
* \brief Seeks to the keyframe just before the desiredFrame if exact
* seeks is enabled, or the frame just after it if exact seeks
* is not enabled.
*
* The seek is not made if framesPlayed is greater than the keyframe
* this would jump too. This means that frame-by-frame seeking after
* a keyframe must be done elsewhere.
*
* If the seek is made the needflush parameter is set.
*
* \param desiredFrame frame we are attempting to seek to.
* \param needflush set to true if a seek is made.
*/
void DecoderBase::DoFastForwardSeek(long long desiredFrame, bool &needflush)
{
if (!ringBuffer)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"No ringBuffer yet, can't fast forward seek");
return;
}
int pre_idx, post_idx;
FindPosition(desiredFrame, hasKeyFrameAdjustTable, pre_idx, post_idx);
// if exactseeks, use keyframe <= desiredFrame
PosMapEntry e, e_pre, e_post;
{
QMutexLocker locker(&m_positionMapLock);
e_pre = m_positionMap[pre_idx];
e_post = m_positionMap[post_idx];
}
e = e_pre;
if (((uint64_t) (GetKey(e_post) - desiredFrame)) <= seeksnap &&
(framesPlayed - 1 >= GetKey(e_pre) ||
GetKey(e_post) - desiredFrame < desiredFrame - GetKey(e_pre)))
{
// Snap to the right if e_post is within snap distance and is
// a closer snap than e_pre. Take into account that if
// framesPlayed has already reached e_pre, we should only snap
// to the right.
e = e_post;
}
lastKey = GetKey(e);
if (framesPlayed < lastKey)
{
ringBuffer->Seek(e.pos, SEEK_SET);
needflush = true;
framesPlayed = lastKey;
framesRead = lastKey;
}
}
void DecoderBase::UpdateFramesPlayed(void)
{
m_parent->SetFramesPlayed(framesPlayed);
}
void DecoderBase::FileChanged(void)
{
ResetPosMap();
framesPlayed = 0;
framesRead = 0;
totalDuration = AVRationalInit(0);
waitingForChange = false;
justAfterChange = true;
m_parent->FileChangedCallback();
}
void DecoderBase::SetReadAdjust(long long adjust)
{
readAdjust = adjust;
}
void DecoderBase::SetWaitForChange(void)
{
waitingForChange = true;
}
bool DecoderBase::GetWaitForChange(void) const
{
return waitingForChange;
}
QStringList DecoderBase::GetTracks(uint type) const
{
QStringList list;
QMutexLocker locker(avcodeclock);
for (uint i = 0; i < tracks[type].size(); i++)
list += GetTrackDesc(type, i);
return list;
}
int DecoderBase::GetTrackLanguageIndex(uint type, uint trackNo) const
{
if (trackNo >= tracks[type].size())
return 0;
return tracks[type][trackNo].language_index;
}
QString DecoderBase::GetTrackDesc(uint type, uint trackNo) const
{
if (trackNo >= tracks[type].size())
return "";
QMutexLocker locker(avcodeclock);
QString type_msg = toString((TrackType)type);
int lang = tracks[type][trackNo].language;
int hnum = trackNo + 1;
if (kTrackTypeCC608 == type)
hnum = tracks[type][trackNo].stream_id;
if (!lang)
return type_msg + QString(" %1").arg(hnum);
else
{
QString lang_msg = iso639_key_toName(lang);
return type_msg + QString(" %1: %2").arg(hnum).arg(lang_msg);
}
}
int DecoderBase::SetTrack(uint type, int trackNo)
{
if (trackNo >= (int)tracks[type].size())
return false;
QMutexLocker locker(avcodeclock);
currentTrack[type] = max(-1, trackNo);
if (currentTrack[type] < 0)
selectedTrack[type].av_stream_index = -1;
else
{
wantedTrack[type] = tracks[type][currentTrack[type]];
selectedTrack[type] = tracks[type][currentTrack[type]];
}
return currentTrack[type];
}
StreamInfo DecoderBase::GetTrackInfo(uint type, uint trackNo) const
{
QMutexLocker locker(avcodeclock);
if (trackNo >= tracks[type].size())
{
StreamInfo si;
return si;
}
return tracks[type][trackNo];
}
bool DecoderBase::InsertTrack(uint type, const StreamInfo &info)
{
QMutexLocker locker(avcodeclock);
for (uint i = 0; i < tracks[type].size(); i++)
if (info.stream_id == tracks[type][i].stream_id)
return false;