Esempio n. 1
0
        public BaseAtom ReadAtom(IBoxContainer parentAtom)
        {
            BaseAtom atom       = null;
            uint     type       = 0;
            var      currentPos = MediaFile.Position;
            long     size       = MediaFile.Br.ReadUInt32();

            if (size == 0)
            {
                atom = new AtomNULL(this, type, size, currentPos)
                {
                    Parent = parentAtom
                };
                return(atom);
            }
            type = MediaFile.Br.ReadUInt32();
            if (size == 1)
            {
                size = MediaFile.Br.ReadInt64();
                if (size == 0)
                {
                    atom = new AtomNULL(this, type, size, currentPos)
                    {
                        Parent = parentAtom
                    };
                    return(atom);
                }
            }
            switch (type)
            {
            case FTYP:
                atom = new AtomFTYP(this, size, currentPos);
                break;

            case MOOV:
                atom = new AtomMOOV(this, type, size, currentPos);
                break;

            case MOOF:
                atom = new AtomMOOF(this, type, size, currentPos);
                break;

            case MVEX:
                atom = new AtomMVEX(this, type, size, currentPos);
                break;

            case MVHD:
                atom = new AtomMVHD(this, type, size, currentPos);
                break;

            case MFHD:
                atom = new AtomMFHD(this, type, size, currentPos);
                break;

            case TRAK:
                atom = new AtomTRAK(this, type, size, currentPos);
                break;

            case TRAF:
                atom = new AtomTRAF(this, type, size, currentPos);
                break;

            case TREX:
                atom = new AtomTREX(this, type, size, currentPos);
                break;

            case TRUN:
                atom = new AtomTRUN(this, type, size, currentPos);
                break;

            case TKHD:
                atom = new AtomTKHD(this, type, size, currentPos);
                break;

            case TFHD:
                atom = new AtomTFHD(this, type, size, currentPos);
                break;

            case MDIA:
                atom = new AtomMDIA(this, type, size, currentPos);
                break;

            case MDHD:
                atom = new AtomMdhd(this, type, size, currentPos);
                break;

            case HDLR:
                atom = new AtomHdlr(this, type, size, currentPos);
                break;

            case MINF:
                atom = new AtomMINF(this, type, size, currentPos);
                break;

            case SMHD:
                atom = new AtomSMHD(this, type, size, currentPos);
                break;

            case DINF:
                atom = new AtomDINF(this, type, size, currentPos);
                break;

            case STBL:
                atom = new AtomSTBL(this, type, size, currentPos);
                break;

            case VMHD:
                atom = new AtomVMHD(this, type, size, currentPos);
                break;

            case DREF:
                atom = new AtomDREF(this, type, size, currentPos);
                break;

            case STSD:
                atom = new AtomSTSD(this, type, size, currentPos);
                break;

            case STTS:
                atom = new AtomSTTS(this, type, size, currentPos);
                break;

            case STSC:
                atom = new AtomSTSC(this, type, size, currentPos);
                break;

            case STSZ:
                atom = new AtomSTSZ(this, type, size, currentPos);
                break;

            case STCO:
                atom = new AtomSTCO(this, type, size, currentPos);
                break;

            case CTTS:
                atom = new AtomCTTS(this, type, size, currentPos);
                break;

            case STSS:
                atom = new AtomSTSS(this, type, size, currentPos);
                break;

            case URL:
                atom = new AtomURL(this, type, size, currentPos);
                break;

            case MP4A:
                atom = new AtomMP4A(this, type, size, currentPos);
                break;

            case AVC1:
                atom = new AtomAVC1(this, type, size, currentPos);
                break;

            case ESDS:
                atom = new AtomESDS(this, type, size, currentPos);
                break;

            case AVCC:
                atom = new AtomAVCC(this, type, size, currentPos);
                break;

            case UDTA:
                atom = new AtomUDTA(this, type, size, currentPos);
                break;

            case WAVE:
                atom = new AtomWAVE(this, type, size, currentPos);
                break;

            case META:
                atom = new AtomMETA(this, type, size, currentPos);
                break;

            case NULL:
                atom = new AtomNULL(this, type, size, currentPos);
                break;

            case ILST:
                atom = new AtomILST(this, type, size, currentPos);
                break;

            case DATA:
                atom = new AtomDATA(this, type, size, currentPos);
                break;

            case CO64:
                atom = new AtomCO64(this, type, size, currentPos);
                break;

            case _COM:
            case NAME:
            case COVR:
            case AART:
            case _WRT:
            case _GRP:
            case _LYR:
            case _NAM:
            case _ART1:
            case _ART2:
            case _PRT:
            case _TOO:
            case _DAY:
            case _CMT:
            case _CPY:
            case _DES:
            case _ALB:
            case TRKN:
            case CPIL:
            case PGAP:
            case TMPO:
            case GNRE:
            case DISK:
            case _GEN:
            case DESC:
            case TVSH:
            case TVEN:
            case TVSN:
            case TVES:
                atom = new AtomMetaField(this, type, size, currentPos);
                break;

            default:
            {
                atom = new IgnoredAtom(this, type, size, currentPos);
                break;
            }
            }
            atom.Parent = parentAtom;
            atom.Read();
            if (currentPos + atom.Size != MediaFile.Position)
            {
                FATAL("atom start:{0};Atom Size:{1};currentPostion:{2}", currentPos, atom.Size, MediaFile.Position);
            }
            return(atom);
        }
Esempio n. 2
0
        private AtomTRAK CreateTrackBox(ITrack track, Movie movie, Dictionary <ITrack, int[]> chunks)
        {
            AtomTRAK trackBox = new AtomTRAK();
            var      tkhd     = new AtomTKHD
            {
                IsEnabled      = true,
                IsInMovie      = true,
                IsInPoster     = true,
                IsInPreview    = true,
                Matrix         = track.TrackMetaData.Matrix,
                AlternateGroup = track.TrackMetaData.Group,
                CreationTime   = track.CreationTime,
                Duration       = track.Edits?.Count > 0
                    ? (uint)(track.Edits.Sum(x => x.SegmentDuration) * track.TrackMetaData.Timescale)
                    : track.Duration * GetTimescale(movie) / track.TrackMetaData.Timescale,
                Width            = (uint)track.TrackMetaData.Width,
                Height           = (uint)track.TrackMetaData.Height,
                Layer            = track.TrackMetaData.Layer,
                ModificationTime = DateTime.Now.SecondsFrom1904(),
                TrackId          = track.TrackMetaData.TrackId, Volume = track.TrackMetaData.Volume
            };

            trackBox.AddAtom(tkhd);
            trackBox.AddAtom(CreateEdts(track, movie));

            AtomMDIA mdia = new AtomMDIA();

            trackBox.AddAtom(mdia);
            AtomMdhd mdhd = new AtomMdhd
            {
                CreationTime = track.TrackMetaData.CreationTime.SecondsFrom1904(),
                Duration     = track.Duration,
                TimeScale    = track.TrackMetaData.Timescale,
                Language     = track.TrackMetaData.Language
            };

            mdia.AddAtom(mdhd);
            AtomHdlr hdlr = new AtomHdlr();

            mdia.AddAtom(hdlr);
            hdlr.ComonentType = track.Handler;

            AtomMINF minf = new AtomMINF();

            switch (track.Handler)
            {
            case "vide":
                minf.AddAtom(new AtomVMHD());
                break;

            case "soun":
                minf.AddAtom(new AtomSMHD());
                break;

            case "text":
            case "sbtl":
                minf.AddAtom(new AtomNMHD());
                break;

            case "subt":
                minf.AddAtom(new AtomSTHD());
                break;

            case "hint":
                minf.AddAtom(new AtomHMHD());
                break;
            }

            // dinf: all these three boxes tell us is that the actual
            // data is in the current file and not somewhere external
            AtomDINF dinf = new AtomDINF();
            AtomDREF dref = new AtomDREF();
            AtomURL  url  = new AtomURL {
                Flags = 1
            };

            dref.AddAtom(url);
            minf.AddAtom(dinf);
            //

            var stbl = CreateStbl(track, movie, chunks);

            minf.AddAtom(stbl);
            mdia.AddAtom(minf);
            return(trackBox);
        }