public static QuantMatrixExtension read(BitReader inn) { QuantMatrixExtension qme = new QuantMatrixExtension(); if (inn.read1Bit() != 0) { qme.intra_quantiser_matrix = readQMat(inn); } if (inn.read1Bit() != 0) { qme.non_intra_quantiser_matrix = readQMat(inn); } if (inn.read1Bit() != 0) { qme.chroma_intra_quantiser_matrix = readQMat(inn); } if (inn.read1Bit() != 0) { qme.chroma_non_intra_quantiser_matrix = readQMat(inn); } return(qme); }
public static void readExtension(MemoryStream bb, PictureHeader ph, SequenceHeader sh) { ph.m_hasExtensions = true; BitReader inb = new BitReader(bb); int extType = inb.readNBit(4); switch (extType) { case Quant_Matrix_Extension: ph.quantMatrixExtension = QuantMatrixExtension.read(inb); break; case Copyright_Extension: ph.copyrightExtension = CopyrightExtension.read(inb); break; case Picture_Display_Extension: ph.pictureDisplayExtension = PictureDisplayExtension.read(inb, sh.sequenceExtension, ph.pictureCodingExtension); break; case Picture_Coding_Extension: ph.pictureCodingExtension = PictureCodingExtension.read(inb); break; case Picture_Spatial_Scalable_Extension: ph.pictureSpatialScalableExtension = PictureSpatialScalableExtension.read(inb); break; case Picture_Temporal_Scalable_Extension: ph.pictureTemporalScalableExtension = PictureTemporalScalableExtension.read(inb); break; default: throw new Exception("Unsupported extension: " + extType); } }