/// <summary> /// Parse an PCS packet which contains width/height info /// </summary> /// <param name="segment">object containing info about the current segment</param> /// <param name="pic">SubPicture object containing info about the current caption</param> /// <param name="msg">reference to message string</param> /// <param name="buffer">Raw data buffer, starting right after segment</param> private static void ParsePcs(SupSegment segment, BluRaySupPicture pic, string[] msg, byte[] buffer) { if (segment.Size >= 4) { pic.Width = BigEndianInt16(buffer, 0); // video_width pic.Height = BigEndianInt16(buffer, 2); // video_height int type = buffer[4]; // hi nibble: frame_rate, lo nibble: reserved int num = BigEndianInt16(buffer, 5); // composition_number // skipped: // 8bit composition_state: 0x00: normal, 0x40: acquisition point // 0x80: epoch start, 0xC0: epoch continue, 6bit reserved // 8bit palette_update_flag (0x80), 7bit reserved int palId = buffer[9]; // 8bit palette_id_ref int coNum = buffer[10]; // 8bit number_of_composition_objects (0..2) if (coNum > 0) { // composition_object: int objId = BigEndianInt16(buffer, 11); // 16bit object_id_ref msg[0] = "palID: " + palId + ", objID: " + objId; if (pic.ImageObjects == null) { pic.ImageObjects = new List <ImageObject>(); } ImageObject imgObj; if (objId >= pic.ImageObjects.Count) { imgObj = new ImageObject(); pic.ImageObjects.Add(imgObj); } else { imgObj = pic.GetImageObject(objId); } imgObj.PaletteId = palId; pic.ObjectId = objId; // skipped: 8bit window_id_ref if (segment.Size >= 0x13) { pic.FramesPerSecondType = type; // object_cropped_flag: 0x80, forced_on_flag = 0x040, 6bit reserved int forcedCropped = buffer[14]; pic.CompositionNumber = num; pic.IsForced = ((forcedCropped & 0x40) == 0x40); imgObj.XOffset = BigEndianInt16(buffer, 15); // composition_object_horizontal_position imgObj.YOffset = BigEndianInt16(buffer, 17); // composition_object_vertical_position // if (object_cropped_flag==1) // 16bit object_cropping_horizontal_position // 16bit object_cropping_vertical_position // 16bit object_cropping_width // object_cropping_height } } } }
/// <summary> /// parse an ODS packet which contain the image data /// </summary> /// <param name="buffer">raw byte date, starting right after segment</param> /// <param name="segment">object containing info about the current segment</param> /// <param name="pic">SubPicture object containing info about the current caption</param> /// <param name="msg">reference to message string</param> /// <returns>true if this is a valid new object (neither invalid nor a fragment)</returns> private static bool ParseOds(byte[] buffer, SupSegment segment, BluRaySupPicture pic, string[] msg) { ImageObjectFragment info; int objId = BigEndianInt16(buffer, 0); // 16bit object_id int objVer = buffer[2]; // 16bit object_id nikse - index 2 or 1??? int objSeq = buffer[3]; // 8bit first_in_sequence (0x80), // last_in_sequence (0x40), 6bits reserved bool first = (objSeq & 0x80) == 0x80; bool last = (objSeq & 0x40) == 0x40; if (pic.ImageObjects == null) { pic.ImageObjects = new List <ImageObject>(); } ImageObject imgObj; if (objId >= pic.ImageObjects.Count) { imgObj = new ImageObject(); pic.ImageObjects.Add(imgObj); } else { imgObj = pic.GetImageObject(objId); } if (imgObj.Fragments == null || first) { // 8bit object_version_number // skipped: // 24bit object_data_length - full RLE buffer length (including 4 bytes size info) int width = BigEndianInt16(buffer, 7); // object_width int height = BigEndianInt16(buffer, 9); // object_height if (width <= pic.Width && height <= pic.Height) { imgObj.Fragments = new List <ImageObjectFragment>(); info = new ImageObjectFragment(); info.ImagePacketSize = segment.Size - 11; // Image packet size (image bytes) info.ImageBuffer = new byte[info.ImagePacketSize]; Buffer.BlockCopy(buffer, 11, info.ImageBuffer, 0, info.ImagePacketSize); imgObj.Fragments.Add(info); imgObj.BufferSize = info.ImagePacketSize; imgObj.Height = height; imgObj.Width = width; msg[0] = "ID: " + objId + ", update: " + objVer + ", seq: " + (first ? "first" : "") + ((first && last) ? "/" : "") + (last ? "" + "last" : ""); return(true); } System.Diagnostics.Debug.Print("Invalid image size - ignored"); return(false); } // object_data_fragment // skipped: // 16bit object_id // 8bit object_version_number // 8bit first_in_sequence (0x80), last_in_sequence (0x40), 6bits reserved info = new ImageObjectFragment(); info.ImagePacketSize = segment.Size - 4; info.ImageBuffer = new byte[info.ImagePacketSize]; Buffer.BlockCopy(buffer, 4, info.ImageBuffer, 0, info.ImagePacketSize); imgObj.Fragments.Add(info); imgObj.BufferSize += info.ImagePacketSize; // total size (may contain several packets) msg[0] = "ID: " + objId + ", update: " + objVer + ", seq: " + (first ? "first" : "") + ((first && last) ? "/" : "") + (last ? "" + "last" : ""); return(false); }