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6 Commits
libwebm-1.
...
libwebm-1.
| Author | SHA1 | Date | |
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093b78faf2 | ||
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ed90de0d52 | ||
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a01e568293 | ||
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d7ce23a019 | ||
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acf7ddb273 | ||
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fc12207e15 |
179
mkvparser.cpp
179
mkvparser.cpp
@@ -10,6 +10,7 @@
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#include <cassert>
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#include <cstring>
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#include <new>
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#include <climits>
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//#include <windows.h>
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//#include "odbgstream.hpp"
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//using std::endl;
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@@ -24,7 +25,7 @@ void mkvparser::GetVersion(int& major, int& minor, int& build, int& revision)
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major = 1;
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minor = 0;
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build = 0;
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revision = 4;
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revision = 5;
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}
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@@ -2033,6 +2034,50 @@ bool Cues::FindNext(
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#endif
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const CuePoint* Cues::GetFirst() const
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{
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LoadCuePoint(); //init cues
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const size_t count = m_count + m_preload_count;
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if (count == 0) //weird
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return NULL;
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CuePoint* const* const pp = m_cue_points;
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assert(pp);
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CuePoint* const pCP = pp[0];
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assert(pCP);
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assert(pCP->GetTimeCode() >= 0);
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return pCP;
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}
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const CuePoint* Cues::GetLast() const
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{
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LoadCuePoint(); //init cues
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const size_t count = m_count + m_preload_count;
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if (count == 0) //weird
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return NULL;
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const size_t index = count - 1;
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CuePoint* const* const pp = m_cue_points;
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assert(pp);
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CuePoint* const pCP = pp[index];
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assert(pCP);
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pCP->Load(m_pSegment->m_pReader);
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assert(pCP->GetTimeCode() >= 0);
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return pCP;
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}
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const CuePoint* Cues::GetNext(const CuePoint* pCurr) const
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{
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if (pCurr == NULL)
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@@ -2304,8 +2349,8 @@ void CuePoint::TrackPosition::Parse(
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}
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assert(m_pos >= 0);
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//assert(m_track > 0);
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//assert(m_block > 0);
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assert(m_track > 0);
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assert(m_block > 0);
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}
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@@ -2672,11 +2717,21 @@ const BlockEntry* Segment::Seek(
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assert(lo > i);
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assert(lo <= j);
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Cluster* const pCluster = *--lo;
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assert(pCluster);
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assert(pCluster->GetTime() <= time_ns);
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while (lo > i)
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{
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Cluster* const pCluster = *--lo;
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assert(pCluster);
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assert(pCluster->GetTime() <= time_ns);
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return pCluster->GetEntry(pTrack);
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const BlockEntry* const pBE = pCluster->GetEntry(pTrack);
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if ((pBE != 0) && !pBE->EOS())
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return pBE;
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//landed on empty cluster (no entries)
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}
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return pTrack->GetEOS(); //weird
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}
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assert(pTrack->GetType() == 1); //video
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@@ -2717,17 +2772,16 @@ const BlockEntry* Segment::Seek(
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{
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const BlockEntry* const pBlockEntry = pCluster->GetEntry(pTrack);
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assert(pBlockEntry);
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if (!pBlockEntry->EOS()) //found a keyframe
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if ((pBlockEntry != 0) && !pBlockEntry->EOS()) //found a keyframe
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{
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const Block* const pBlock = pBlockEntry->GetBlock();
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assert(pBlock);
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//TODO: this isn't necessarily the keyframe we want,
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//NOTE: this isn't necessarily the keyframe we want,
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//since there might another keyframe on this same
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//cluster with a greater timecode that but that is
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//still less than the requested time. For now we
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//cluster with a greater timecode, that is still
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//less than the requested time. For now we
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//simply return the first keyframe we find.
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if (pBlock->GetTime(pCluster) <= time_ns)
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@@ -2744,9 +2798,8 @@ const BlockEntry* Segment::Seek(
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assert(pCluster->GetTime() <= time_ns);
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const BlockEntry* const pBlockEntry = pCluster->GetMaxKey(pVideo);
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assert(pBlockEntry);
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if (!pBlockEntry->EOS())
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if ((pBlockEntry != 0) && !pBlockEntry->EOS())
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return pBlockEntry;
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}
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@@ -2827,7 +2880,7 @@ SegmentInfo::SegmentInfo(Segment* pSegment, long long start, long long size_) :
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const long long stop = start + size_;
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m_timecodeScale = 1000000;
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m_duration = 0;
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m_duration = -1;
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while (pos < stop)
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{
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@@ -2843,8 +2896,9 @@ SegmentInfo::SegmentInfo(Segment* pSegment, long long start, long long size_) :
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else if (Match(pReader, pos, 0x1741, m_pWritingAppAsUTF8)) //[57][41]
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assert(m_pWritingAppAsUTF8);
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else if (Match(pReader, pos, 0x3BA9, m_pTitleAsUTF8)) //[7B][A9]
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else if (Match(pReader, pos, 0x3BA9, m_pTitleAsUTF8)) //[7B][A9]
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assert(m_pTitleAsUTF8);
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else
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{
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long len;
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@@ -2898,7 +2952,9 @@ long long SegmentInfo::GetTimeCodeScale() const
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long long SegmentInfo::GetDuration() const
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{
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assert(m_duration >= 0);
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if (m_duration < 0)
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return -1;
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assert(m_timecodeScale >= 1);
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const double dd = double(m_duration) * double(m_timecodeScale);
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@@ -2944,6 +3000,7 @@ Track::Info::Info():
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codecPrivate(NULL),
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codecPrivateSize(0),
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codecNameAsUTF8(NULL)
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//lacing(false)
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{
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}
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@@ -3003,6 +3060,12 @@ const unsigned char* Track::GetCodecPrivate(size_t& size) const
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}
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bool Track::GetLacing() const
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{
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return m_info.lacing;
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}
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long Track::GetFirst(const BlockEntry*& pBlockEntry) const
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{
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Cluster* pCluster = m_pSegment->GetFirst();
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@@ -3406,7 +3469,13 @@ Tracks::Tracks(Segment* pSegment, long long start, long long size_) :
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//pos now desinates start of element
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if (id == 0x2E) //TrackEntry ID
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ParseTrackEntry(pos, size1, *m_trackEntriesEnd++);
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{
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Track*& pTrack = *m_trackEntriesEnd;
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ParseTrackEntry(pos, size1, pTrack);
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if (pTrack)
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++m_trackEntriesEnd;
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}
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pos += size1; //consume payload
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assert(pos <= stop);
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@@ -3441,6 +3510,8 @@ void Tracks::ParseTrackEntry(
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Track::Settings audioSettings;
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audioSettings.start = -1;
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long long lacing = 1; //default is true
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while (pos < stop)
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{
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#ifdef _DEBUG
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@@ -3459,6 +3530,8 @@ void Tracks::ParseTrackEntry(
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assert(i.nameAsUTF8);
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else if (Match(pReader, pos, 0x06, i.codecId))
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;
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else if (Match(pReader, pos, 0x1C, lacing))
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assert(lacing <= 1);
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else if (Match(pReader,
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pos,
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0x23A2,
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@@ -3505,6 +3578,8 @@ void Tracks::ParseTrackEntry(
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//and that it is unique among all tracks.
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assert(i.number > 0);
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i.lacing = (lacing > 0) ? true : false;
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//TODO: vet settings, to ensure that video settings (0x60)
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//were specified when type = 1, and that audio settings (0x61)
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//were specified when type = 2.
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@@ -3899,6 +3974,19 @@ long long Cluster::GetFirstTime()
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}
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long long Cluster::GetLastTime()
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{
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const BlockEntry* const pEntry = GetLast();
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if (pEntry == NULL) //empty cluster
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return GetTime();
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const Block* const pBlock = pEntry->GetBlock();
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assert(pBlock);
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return pBlock->GetTime(this);
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}
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void Cluster::ParseBlockGroup(long long start, long long size, size_t index)
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{
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@@ -3931,11 +4019,12 @@ void Cluster::ParseSimpleBlock(long long start, long long size, size_t index)
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const BlockEntry* Cluster::GetFirst()
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{
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//TODO: handle empty cluster
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LoadBlockEntries();
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assert(m_entries);
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assert(m_entriesCount >= 1);
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//assert(m_entries);
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//assert(m_entriesCount >= 1);
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if ((m_entries == NULL) || (m_entriesCount == 0))
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return NULL;
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const BlockEntry* const pFirst = m_entries[0];
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assert(pFirst);
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@@ -3946,11 +4035,12 @@ const BlockEntry* Cluster::GetFirst()
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const BlockEntry* Cluster::GetLast()
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{
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//TODO: handle empty cluster
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LoadBlockEntries();
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assert(m_entries);
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assert(m_entriesCount >= 1);
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//assert(m_entries);
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//assert(m_entriesCount >= 1);
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if ((m_entries == NULL) || (m_entriesCount == 0))
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return NULL;
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const size_t idx = m_entriesCount - 1;
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@@ -3989,6 +4079,9 @@ const BlockEntry* Cluster::GetEntry(const Track* pTrack)
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LoadBlockEntries();
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if ((m_entries == NULL) || (m_entriesCount == 0))
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return NULL;
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BlockEntry** i = m_entries;
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assert(i);
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@@ -4057,6 +4150,11 @@ Cluster::GetEntry(
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while (i != j)
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{
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#ifdef _DEBUG
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const ptrdiff_t idx = i - m_entries;
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idx;
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#endif
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const BlockEntry* const pEntry = *i++;
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assert(pEntry);
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assert(!pEntry->EOS());
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@@ -4110,7 +4208,7 @@ const BlockEntry* Cluster::GetMaxKey(const VideoTrack* pTrack)
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return pTrack->GetEOS();
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LoadBlockEntries();
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assert(m_entries);
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//assert(m_entries);
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BlockEntry** i = m_entries + m_entriesCount;
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BlockEntry** const j = m_entries;
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@@ -4182,10 +4280,10 @@ const Block* SimpleBlock::GetBlock() const
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}
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bool SimpleBlock::IsBFrame() const
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{
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return false;
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}
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//bool SimpleBlock::IsBFrame() const
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//{
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// return false;
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//}
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BlockGroup::BlockGroup(
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@@ -4321,10 +4419,10 @@ short BlockGroup::GetNextTimeCode() const
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}
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bool BlockGroup::IsBFrame() const
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{
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return (m_nextTimeCode > 0);
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}
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//bool BlockGroup::IsBFrame() const
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//{
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// return (m_nextTimeCode > 0);
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//}
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@@ -4352,14 +4450,21 @@ Block::Block(long long start, long long size_, IMkvReader* pReader) :
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const long hr = pReader->Read(pos, 1, &m_flags);
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assert(hr == 0L);
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const int invisible = int(m_flags & 0x08);
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invisible;
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assert(!invisible);
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const int lacing = int(m_flags & 0x06);
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lacing;
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assert(!lacing);
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++pos;
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assert(pos <= stop);
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m_frameOff = pos;
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const long long frame_size = stop - pos;
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assert(frame_size <= 2147483647L);
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assert(frame_size <= LONG_MAX);
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m_frameSize = static_cast<long>(frame_size);
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}
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@@ -105,7 +105,7 @@ public:
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virtual Cluster* GetCluster() const = 0;
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virtual size_t GetIndex() const = 0;
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virtual const Block* GetBlock() const = 0;
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virtual bool IsBFrame() const = 0;
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//virtual bool IsBFrame() const = 0;
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protected:
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BlockEntry();
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@@ -125,7 +125,7 @@ public:
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Cluster* GetCluster() const;
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size_t GetIndex() const;
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const Block* GetBlock() const;
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bool IsBFrame() const;
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//bool IsBFrame() const;
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protected:
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Cluster* const m_pCluster;
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@@ -148,7 +148,7 @@ public:
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Cluster* GetCluster() const;
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size_t GetIndex() const;
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const Block* GetBlock() const;
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bool IsBFrame() const;
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//bool IsBFrame() const;
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short GetPrevTimeCode() const; //relative to block's time
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short GetNextTimeCode() const; //as above
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@@ -192,6 +192,7 @@ public:
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const char* GetCodecNameAsUTF8() const;
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const char* GetCodecId() const;
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const unsigned char* GetCodecPrivate(size_t&) const;
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bool GetLacing() const;
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const BlockEntry* GetEOS() const;
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@@ -211,7 +212,9 @@ public:
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unsigned char* codecPrivate;
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size_t codecPrivateSize;
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char* codecNameAsUTF8;
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bool lacing;
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Settings settings;
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Info();
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void Clear();
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};
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@@ -403,6 +406,9 @@ public:
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const CuePoint::TrackPosition*&) const;
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#endif
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const CuePoint* GetFirst() const;
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const CuePoint* GetLast() const;
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const CuePoint* GetNext(const CuePoint*) const;
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const BlockEntry* GetBlock(
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@@ -429,7 +435,6 @@ class Cluster
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public:
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Segment* const m_pSegment;
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long m_index;
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public:
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static Cluster* Parse(Segment*, long, long long off);
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@@ -442,6 +447,7 @@ public:
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long long GetTimeCode(); //absolute, but not scaled
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long long GetTime(); //absolute, and scaled (nanosecond units)
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long long GetFirstTime(); //time (ns) of first (earliest) block
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long long GetLastTime(); //time (ns) of last (latest) block
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const BlockEntry* GetFirst();
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const BlockEntry* GetLast();
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@@ -456,6 +462,8 @@ protected:
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Cluster(Segment*, long, long long off);
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public:
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//TODO: these should all be private, with public selector functions
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long m_index;
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long long m_pos;
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long long m_size;
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Reference in New Issue
Block a user