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C++ AP4_TrakAtom::GetChild方法代码示例

本文整理汇总了C++中AP4_TrakAtom::GetChild方法的典型用法代码示例。如果您正苦于以下问题:C++ AP4_TrakAtom::GetChild方法的具体用法?C++ AP4_TrakAtom::GetChild怎么用?C++ AP4_TrakAtom::GetChild使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在AP4_TrakAtom的用法示例。


在下文中一共展示了AP4_TrakAtom::GetChild方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: PrintUsageAndExit


//.........这里部分代码省略.........
        if (track == NULL) {
            fprintf(stderr, "--video option specified, but no video track found\n");
            return 1;
        }
        Options.track_filter = track->GetId();
    } else if (Options.track_id) {
        AP4_Track* track = movie->GetTrack(Options.track_id);
        if (track == NULL) {
            fprintf(stderr, "--track-id option specified, but no such track found\n");
            return 1;
        }
        Options.track_filter = track->GetId();
    }
    
    // save the init segment
    AP4_ByteStream* output = NULL;
    result = AP4_FileByteStream::Create(Options.init_segment_name, AP4_FileByteStream::STREAM_MODE_WRITE, output);
    if (AP4_FAILED(result)) {
        fprintf(stderr, "ERROR: cannot open output file (%d)\n", result);
        return 1;
    }
    AP4_FtypAtom* ftyp = file->GetFileType(); 
    if (ftyp) {
        result = ftyp->Write(*output);
        if (AP4_FAILED(result)) {
            fprintf(stderr, "ERROR: cannot write ftyp segment (%d)\n", result);
            return 1;
        }
    }
    if (Options.track_filter) {
        AP4_MoovAtom* moov = movie->GetMoovAtom();
        
        // only keep the 'trak' atom that we need
        AP4_List<AP4_Atom>::Item* child = moov->GetChildren().FirstItem();
        while (child) {
            AP4_Atom* atom = child->GetData();
            child = child->GetNext();
            if (atom->GetType() == AP4_ATOM_TYPE_TRAK) {
                AP4_TrakAtom* trak = (AP4_TrakAtom*)atom;
                AP4_TkhdAtom* tkhd = (AP4_TkhdAtom*)trak->GetChild(AP4_ATOM_TYPE_TKHD);
                if (tkhd && tkhd->GetTrackId() != Options.track_filter) {
                    atom->Detach();
                    delete atom;
                }
            }
        }

        // only keep the 'trex' atom that we need
        AP4_ContainerAtom* mvex = AP4_DYNAMIC_CAST(AP4_ContainerAtom, moov->GetChild(AP4_ATOM_TYPE_MVEX));
        if (mvex) {
            child = mvex->GetChildren().FirstItem();
            while (child) {
                AP4_Atom* atom = child->GetData();
                child = child->GetNext();
                if (atom->GetType() == AP4_ATOM_TYPE_TREX) {
                    AP4_TrexAtom* trex = AP4_DYNAMIC_CAST(AP4_TrexAtom, atom);
                    if (trex && trex->GetTrackId() != Options.track_filter) {
                        atom->Detach();
                        delete atom;
                    }
                }
            }
        }
    }
    result = movie->GetMoovAtom()->Write(*output);
    if (AP4_FAILED(result)) {
开发者ID:garybruckheimer,项目名称:raypackSuite,代码行数:67,代码来源:Mp4Split.cpp


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