260 lines
8.0 KiB
C++
260 lines
8.0 KiB
C++
// Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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//
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// This sample application demonstrates how to use the matroska parser
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// library, which allows clients to handle a matroska format file.
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#include "mkvreader.hpp"
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#include "mkvparser.hpp"
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static const wchar_t* utf8towcs(const char* str)
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{
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if (str == NULL)
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return NULL;
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//TODO: this probably requires that the locale be
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//configured somehow:
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const size_t size = mbstowcs(NULL, str, 0);
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if (size == 0)
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return NULL;
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wchar_t* const val = new wchar_t[size+1];
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mbstowcs(val, str, size);
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val[size] = L'\0';
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return val;
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}
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int main(int argc, char* argv[])
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{
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if (argc == 1)
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{
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printf("\t\t\tMkv Parser Sample Application\n");
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printf("\t\t\tUsage: \n");
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printf("\t\t\t ./sample [input file] \n");
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printf("\t\t\t ./sample sample.mkv \n");
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return -1;
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}
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using namespace mkvparser;
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MkvReader reader;
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if (reader.Open(argv[1]))
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{
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printf("\n Filename is invalid or error while opening.\n");
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return -1;
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}
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int maj, min, build, rev;
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GetVersion(maj, min, build, rev);
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printf("\t\t libmkv verison: %d.%d.%d.%d\n", maj, min, build, rev);
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long long pos = 0;
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EBMLHeader ebmlHeader;
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ebmlHeader.Parse(&reader, pos);
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printf("\t\t\t EBML Header\n");
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printf("\t\tEBML Version\t\t: %lld\n", ebmlHeader.m_version);
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printf("\t\tEBML MaxIDLength\t: %lld\n", ebmlHeader.m_maxIdLength);
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printf("\t\tEBML MaxSizeLength\t: %lld\n", ebmlHeader.m_maxSizeLength);
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printf("\t\tDoc Type\t\t: %s\n", ebmlHeader.m_docType);
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printf("\t\tPos\t\t\t: %lld\n", pos);
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mkvparser::Segment* pSegment;
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long long ret = mkvparser::Segment::CreateInstance(&reader, pos, pSegment);
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if (ret)
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{
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printf("\n Segment::CreateInstance() failed.");
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return -1;
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}
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ret = pSegment->Load();
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if (ret < 0)
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{
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printf("\n Segment::Load() failed.");
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return -1;
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}
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const SegmentInfo* const pSegmentInfo = pSegment->GetInfo();
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const long long timeCodeScale = pSegmentInfo->GetTimeCodeScale();
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const long long duration_ns = pSegmentInfo->GetDuration();
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const char* const pTitle_ = pSegmentInfo->GetTitleAsUTF8();
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const wchar_t* const pTitle = utf8towcs(pTitle_);
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const char* const pMuxingApp_ = pSegmentInfo->GetMuxingAppAsUTF8();
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const wchar_t* const pMuxingApp = utf8towcs(pMuxingApp_);
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const char* const pWritingApp_ = pSegmentInfo->GetWritingAppAsUTF8();
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const wchar_t* const pWritingApp = utf8towcs(pWritingApp_);
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printf("\n");
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printf("\t\t\t Segment Info\n");
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printf("\t\tTimeCodeScale\t\t: %lld \n", timeCodeScale);
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printf("\t\tDuration\t\t: %lld\n", duration_ns);
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const double duration_sec = double(duration_ns) / 1000000000;
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printf("\t\tDuration(secs)\t\t: %7.3f\n", duration_sec);
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if (pTitle == NULL)
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printf("\t\tTrack Name\t\t: NULL\n");
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else
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printf("\t\tTrack Name\t\t: %ls\n", pTitle);
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if (pMuxingApp == NULL)
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printf("\t\tMuxing App\t\t: NULL\n");
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else
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printf("\t\tMuxing App\t\t: %ls\n", pMuxingApp);
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if (pWritingApp == NULL)
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printf("\t\tWriting App\t\t: NULL\n");
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else
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printf("\t\tWriting App\t\t: %ls\n", pWritingApp);
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// pos of segment payload
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printf("\t\tPosition(Segment)\t: %lld\n", pSegment->m_start);
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// size of segment payload
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printf("\t\tSize(Segment)\t\t: %lld\n", pSegment->m_size);
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mkvparser::Tracks* const pTracks = pSegment->GetTracks();
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unsigned long i = 0;
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const unsigned long j = pTracks->GetTracksCount();
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enum { VIDEO_TRACK = 1, AUDIO_TRACK = 2 };
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printf("\n\t\t\t Track Info\n");
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while (i != j)
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{
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const Track* const pTrack = pTracks->GetTrackByIndex(i++);
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if (pTrack == NULL)
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continue;
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const long long trackType_ = pTrack->GetType();
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unsigned long trackType = static_cast<unsigned long>(trackType_);
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unsigned long trackNumber = pTrack->GetNumber();
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const wchar_t* const pTrackName = utf8towcs(pTrack->GetNameAsUTF8());
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printf("\t\tTrack Type\t\t: %ld\n", trackType);
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printf("\t\tTrack Number\t\t: %ld\n", trackNumber);
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if (pTrackName == NULL)
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printf("\t\tTrack Name\t\t: NULL\n");
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else
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printf("\t\tTrack Name\t\t: %ls \n", pTrackName);
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const char* const pCodecId = pTrack->GetCodecId();
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if (pCodecId == NULL)
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printf("\t\tCodec Id\t\t: NULL\n");
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else
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printf("\t\tCodec Id\t\t: %s\n", pCodecId);
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const char* const pCodecName_ = pTrack->GetCodecNameAsUTF8();
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const wchar_t* const pCodecName = utf8towcs(pCodecName_);
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if (pCodecName == NULL)
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printf("\t\tCodec Name\t\t: NULL\n");
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else
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printf("\t\tCodec Name\t\t: %ls\n", pCodecName);
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if (trackType == VIDEO_TRACK)
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{
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const VideoTrack* const pVideoTrack =
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static_cast<const VideoTrack*>(pTrack);
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const long long width = pVideoTrack->GetWidth();
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printf("\t\tVideo Width\t\t: %lld\n", width);
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const long long height = pVideoTrack->GetHeight();
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printf("\t\tVideo Height\t\t: %lld\n", height);
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const double rate = pVideoTrack->GetFrameRate();
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printf("\t\tVideo Rate\t\t: %f\n",rate);
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}
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if (trackType == AUDIO_TRACK)
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{
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const AudioTrack* const pAudioTrack =
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static_cast<const AudioTrack*>(pTrack);
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const long long channels = pAudioTrack->GetChannels();
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printf("\t\tAudio Channels\t\t: %lld\n", channels);
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const long long bitDepth = pAudioTrack->GetBitDepth();
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printf("\t\tAudio BitDepth\t\t: %lld\n", bitDepth);
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const double sampleRate = pAudioTrack->GetSamplingRate();
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printf("\t\tAddio Sample Rate\t: %.3f\n", sampleRate);
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}
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}
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printf("\n\n\t\t\t Cluster Info\n");
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const unsigned long clusterCount = pSegment->GetCount();
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printf("\t\tCluster Count\t: %ld\n\n", clusterCount);
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if (clusterCount == 0)
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{
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printf("\t\tSegment has no clusters.\n");
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delete pSegment;
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return -1;
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}
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mkvparser::Cluster* pCluster = pSegment->GetFirst();
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while ((pCluster != NULL) && !pCluster->EOS())
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{
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const long long timeCode = pCluster->GetTimeCode();
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printf("\t\tCluster Time Code\t: %lld\n", timeCode);
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const long long time_ns = pCluster->GetTime();
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printf("\t\tCluster Time (ns)\t: %lld\n", time_ns);
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const BlockEntry* pBlockEntry = pCluster->GetFirst();
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while ((pBlockEntry != NULL) && !pBlockEntry->EOS())
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{
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const Block* const pBlock = pBlockEntry->GetBlock();
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const unsigned long trackNum = pBlock->GetTrackNumber();
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const Track* const pTrack = pTracks->GetTrackByNumber(trackNum);
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const long long trackType = pTrack->GetType();
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const long size = pBlock->GetSize();
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const long long time_ns = pBlock->GetTime(pCluster);
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printf("\t\t\tBlock\t\t:%s,%15ld,%s,%15lld\n",
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(trackType == VIDEO_TRACK) ? "V" : "A",
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size,
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pBlock->IsKey() ? "I" : "P",
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time_ns);
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pBlockEntry = pCluster->GetNext(pBlockEntry);
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}
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pCluster = pSegment->GetNext(pCluster);
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}
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delete pSegment;
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return 0;
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}
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