| 0,0 → 1,99 |
|---|
| /* |
| AVRcamVIEW: A PC application to test out the functionallity of the |
| AVRcam real-time image processing engine. |
| Copyright (C) 2004 Brent A. Taylor |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public |
| License along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| For more information on the AVRcamVIEW, please contact: |
| |
| taylorba@comcast.net |
| |
| or go to www.jrobot.net for more details regarding the system. |
| */ |
| |
| package avr.io; |
| |
| import java.io.*; |
| |
| public class AVRInputStream extends FilterInputStream { |
| |
| private static final int NEW_LINE = '\r'; |
| private static final int END_DUMP_DATA = 0x0F; |
| private static final int END_TRACK_DATA = 0xFF; |
| |
| private static final int SEARCHING_STATE = 0x00; |
| private static final int DUMP_FRAME_STATE = 0x01; |
| private static final int ACCEPTING_STATE = 0x02; |
| |
| public AVRInputStream(InputStream in) { |
| super(in); |
| } |
| |
| public int read(byte[] data, int off, int len) throws IOException { |
| |
| int terminator = NEW_LINE; |
| int state = SEARCHING_STATE; |
| |
| int value = -1; |
| int bytesRead = 0; |
| boolean cont = false; |
| |
| do { |
| |
| value = read(); |
| |
| if(value != -1) { |
| |
| switch(state) { |
| case SEARCHING_STATE: |
| //System.out.println("(" + Integer.toHexString(value & 0xFF) + ") "); |
| data[off] = (byte)value; |
| if(value == 0x0A) { |
| terminator = END_TRACK_DATA; |
| state = ACCEPTING_STATE; |
| bytesRead++; |
| } else if(value == 0x0B) { |
| terminator = END_DUMP_DATA; |
| state = DUMP_FRAME_STATE; |
| bytesRead++; |
| } else if(value == 'A' || value == 'N') { |
| terminator = NEW_LINE; |
| state = ACCEPTING_STATE; |
| bytesRead++; |
| } |
| cont = false; |
| break; |
| case DUMP_FRAME_STATE: |
| data[off + bytesRead++] = (byte)value; |
| state = ACCEPTING_STATE; |
| cont = true; |
| break; |
| case ACCEPTING_STATE: |
| //System.out.println(Integer.toHexString(value & 0xFF) + " "); |
| data[off + bytesRead++] = (byte)value; |
| cont = false; |
| break; |
| } |
| |
| } |
| |
| |
| } while(cont || value != terminator); |
| |
| return bytesRead; |
| } |
| |
| } |