diff options
Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/h264/read/.svn/text-base/BitstreamReader.java.svn-base')
| -rw-r--r-- | isoparser/src/main/java/com/googlecode/mp4parser/h264/read/.svn/text-base/BitstreamReader.java.svn-base | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/h264/read/.svn/text-base/BitstreamReader.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/h264/read/.svn/text-base/BitstreamReader.java.svn-base deleted file mode 100644 index 816af6a..0000000 --- a/isoparser/src/main/java/com/googlecode/mp4parser/h264/read/.svn/text-base/BitstreamReader.java.svn-base +++ /dev/null @@ -1,194 +0,0 @@ -/* -Copyright (c) 2011 Stanislav Vitvitskiy - -Permission is hereby granted, free of charge, to any person obtaining a copy of this -software and associated documentation files (the "Software"), to deal in the Software -without restriction, including without limitation the rights to use, copy, modify, -merge, publish, distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to the following -conditions: - -The above copyright notice and this permission notice shall be included in all copies or -substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, -INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR -PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE -FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, -TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE -OR OTHER DEALINGS IN THE SOFTWARE. -*/ -package com.googlecode.mp4parser.h264.read; - -import com.googlecode.mp4parser.h264.CharCache; - -import java.io.IOException; -import java.io.InputStream; - -/** - * A dummy implementation of H264 RBSP reading - * - * @author Stanislav Vitvitskiy - */ -public class BitstreamReader { - private InputStream is; - private int curByte; - private int nextByte; - int nBit; - protected static int bitsRead; - - protected CharCache debugBits = new CharCache(50); - - public BitstreamReader(InputStream is) throws IOException { - this.is = is; - curByte = is.read(); - nextByte = is.read(); - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#read1Bit() - */ - public int read1Bit() throws IOException { - if (nBit == 8) { - advance(); - if (curByte == -1) { - return -1; - } - } - int res = (curByte >> (7 - nBit)) & 1; - nBit++; - - debugBits.append(res == 0 ? '0' : '1'); - ++bitsRead; - - return res; - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#readNBit(int) - */ - public long readNBit(int n) throws IOException { - if (n > 64) - throw new IllegalArgumentException("Can not readByte more then 64 bit"); - - long val = 0; - - for (int i = 0; i < n; i++) { - val <<= 1; - val |= read1Bit(); - } - - return val; - } - - private void advance() throws IOException { - curByte = nextByte; - nextByte = is.read(); - nBit = 0; - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#readByte() - */ - public int readByte() throws IOException { - if (nBit > 0) { - advance(); - } - - int res = curByte; - - advance(); - - return res; - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#moreRBSPData() - */ - public boolean moreRBSPData() throws IOException { - if (nBit == 8) { - advance(); - } - int tail = 1 << (8 - nBit - 1); - int mask = ((tail << 1) - 1); - boolean hasTail = (curByte & mask) == tail; - - return !(curByte == -1 || (nextByte == -1 && hasTail)); - } - - public long getBitPosition() { - return (bitsRead * 8 + (nBit % 8)); - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#readRemainingByte() - */ - public long readRemainingByte() throws IOException { - return readNBit(8 - nBit); - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#next_bits(int) - */ - public int peakNextBits(int n) throws IOException { - if (n > 8) - throw new IllegalArgumentException("N should be less then 8"); - if (nBit == 8) { - advance(); - if (curByte == -1) { - return -1; - } - } - int[] bits = new int[16 - nBit]; - - int cnt = 0; - for (int i = nBit; i < 8; i++) { - bits[cnt++] = (curByte >> (7 - i)) & 0x1; - } - - for (int i = 0; i < 8; i++) { - bits[cnt++] = (nextByte >> (7 - i)) & 0x1; - } - - int result = 0; - for (int i = 0; i < n; i++) { - result <<= 1; - result |= bits[i]; - } - - return result; - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#byte_aligned() - */ - public boolean isByteAligned() { - return (nBit % 8) == 0; - } - - /* - * (non-Javadoc) - * - * @see ua.org.jplayer.javcodec.h264.RBSPInputStream#close() - */ - public void close() throws IOException { - } - - public int getCurBit() { - return nBit; - } -}
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