Exemple #1
0
        /// <summary>
        /// Read - read in the SampleTableBox from the input MP4 file.
        /// Sub-boxes can come in in any order.
        /// </summary>
        /// <param name="reader">BoxReader</param>
        public override void Read(BoxReader reader)
        {
            using (new SizeChecker(this, reader)) {
                base.Read(reader);

                while (reader.BaseStream.Position < (long)(this.Size + this.Offset))
                {
                    long pos  = reader.BaseStream.Position;
                    Box  test = new Box(BoxTypes.Any);
                    test.Read(reader);
                    reader.BaseStream.Position = pos;

                    if (test.Type == BoxTypes.TimeToSample)
                    {
                        this.DecodingTimeToSampleBox = new DecodingTimeToSampleBox(this);
                        DecodingTimeToSampleBox.Read(reader);
                    }

                    else if (test.Type == BoxTypes.CompositionOffset)
                    {
                        this.CompositionTimeToSample = new CompositionTimeToSample(this);
                        CompositionTimeToSample.Read(reader);
                    }

                    else if (test.Type == BoxTypes.SampleDescription)
                    {
                        this.SampleDescriptionsBox = new SampleDescriptionsBox(this);
                        SampleDescriptionsBox.Read(reader);
                    }

                    else if (test.Type == BoxTypes.SampleToChunk)
                    {
                        this.SampleToChunkBox = new SampleToChunkBox(this);
                        SampleToChunkBox.Read(reader);
                    }

                    else if (test.Type == BoxTypes.SampleSize)
                    {
                        this.SampleSizeBox = new SampleSizeBox(this);
                        SampleSizeBox.Read(reader);
                    }

                    else if (test.Type == BoxTypes.ChunkOffset) // FIXME: this can be a "co64" box
                    {
                        this.ChunkOffSetBox = new ChunkOffSetBox(this);
                        ChunkOffSetBox.Read(reader);
                    }

                    else if (test.Type == BoxTypes.SyncSampleMap)
                    {
                        this.SyncSampleMapBox = new SyncSampleMapBox();
                        SyncSampleMapBox.Read(reader);
                    }

                    else
                    {
                        reader.BaseStream.Position = (long)(test.Size + test.Offset); // skip unknown box
                        Debug.WriteLine(string.Format("Unknown box type {0} in SampleTableBox (stbl), skipped", test.Type.ToString()));
                    }
                } // end of while

                if (SampleToChunkBox != null)
                {
                    SampleToChunkBox.CheckIntegrityOfChunkData();
                }
            }
        }