239 lines
8.5 KiB
Java
239 lines
8.5 KiB
Java
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Formatter;
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public class H264Parser {
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//0x00000001<30><31>0x000001<30><31>һ<EFBFBD><D2BB>nalu<6C><75><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>־<EFBFBD><D6BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>˱<EFBFBD>־ʱΪ<CAB1><CEAA>nalu<6C>Ľ<EFBFBD>β<EFBFBD><CEB2>
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//<2F><>ʼ<EFBFBD><CABC>־<EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽڣ<D6BD>type<70><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>nalu<6C><75><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD>type & 0x1F<31><46>Ϊ<EFBFBD><CEAA>nalu<6C><75><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD>nalu_type<70><65><EFBFBD><EFBFBD>
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private static final int NALU_TYPE_SLICE = 1; //<2F><>IDRͼ<52><CDBC><EFBFBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB>ֵ<EFBFBD>Ƭ<EFBFBD>Σ<EFBFBD>ΪP<CEAA><50>B֡
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private static final int NALU_TYPE_DPA = 2; //<2F><>IDRͼ<52><CDBC><EFBFBD><EFBFBD>A<EFBFBD><41><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD>Ƭ<EFBFBD><C6AC>
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private static final int NALU_TYPE_DPB = 3; //<2F><>IDRͼ<52><CDBC><EFBFBD><EFBFBD>B<EFBFBD><42><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD>Ƭ<EFBFBD><C6AC>
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private static final int NALU_TYPE_DPC = 4; //<2F><>IDRͼ<52><CDBC><EFBFBD><EFBFBD>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD>Ƭ<EFBFBD><C6AC>
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private static final int NALU_TYPE_IDR = 5; //IDRͼ<52><CDBC><EFBFBD><EFBFBD>Ƭ<EFBFBD>Σ<EFBFBD><CEA3>ؼ<EFBFBD>֡<EFBFBD><D6A1>I֡
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private static final int NALU_TYPE_SEI = 6; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF>Ϣ
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private static final int NALU_TYPE_SPS = 7; //<2F><><EFBFBD>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Sequence Parameter Set<65><74>
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private static final int NALU_TYPE_PPS = 8; //ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>PPS<50><53>Picture Parameter Set<65><74>
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private static final int NALU_TYPE_AUD = 9; //<2F>ָ<EFBFBD><D6B8><EFBFBD>
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private static final int NALU_TYPE_EOSEQ = 10; //<2F><><EFBFBD>н<EFBFBD><D0BD><EFBFBD><EFBFBD><EFBFBD>
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private static final int NALU_TYPE_EOSTREAM = 11; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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private static final int NALU_TYPE_FILL = 12; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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private static final int NALU_PRIORITY_DISPOSABLE = 0;
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private static final int NALU_PRIORITY_LOW = 1;
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private static final int NALU_PRIORITY_HIGH = 2;
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private static final int NALU_PRIORITY_HIGHEST = 3;
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private boolean mFirstFind = true; //<2F><>һ<EFBFBD>β<EFBFBD><CEB2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>
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private int mStartCodeLen = 0; //<2F><>ʼ<EFBFBD>볤<EFBFBD><EBB3A4>
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private int mCurStartCodeLen = 0;
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private int mFrameLen = 0; //֡<><D6A1><EFBFBD><EFBFBD>
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private int mFrameFirstByte = 0; //֡<><D6A1><EFBFBD><EFBFBD><EFBFBD>еĵ<D0B5>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
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private int mCurFrameFirstByte = 0;
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private int mPos = 0;
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private int mLen = 0;
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private String mStartCode = "";
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private int mNaluType = 0;
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private int mForbiddenBit = 0;
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private int mNalReferenceIdc = 0;
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public static void main(String[] args) {
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if (args.length > 0) {
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H264Parser h264Parser = new H264Parser();
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h264Parser.ParseH264(args[0]);
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} else {
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System.out.println("Missing h264 filename.");
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}
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}
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//<2F><><EFBFBD><EFBFBD>NALU<4C><55>Ӧ<EFBFBD><D3A6>SliceΪһ֡<D2BB>Ŀ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>0x00000001(<28><>4<EFBFBD><34><EFBFBD>ֽڳ<D6BD><DAB3><EFBFBD>)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0x000001(<28><>3<EFBFBD><33><EFBFBD>ֽڳ<D6BD><DAB3><EFBFBD>)<29><>
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public int FindStartCode(InputStream inputStream) {
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byte[] startCode = new byte[4];
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int len = -1;
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try {
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len = inputStream.read(startCode);
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} catch (Exception e) {
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e.printStackTrace();
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}
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if (len == 3) {
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if (startCode[0]==0 && startCode[1]==0 && startCode[2]==1) {
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len = 3;
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} else {
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len = 0;
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}
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} else if (len == 4) {
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if (startCode[0]==0 && startCode[1]==0 && startCode[2]==0 && startCode[3]==1) {
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len = 4;
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} else {
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len = 0;
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}
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}
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return len;
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}
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public int FindStartCode(List<Integer> startCodeList) {
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int len = startCodeList.size();
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if (len == 3) {
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if (startCodeList.get(0)==0 && startCodeList.get(1)==0 && startCodeList.get(2)==1) {
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return 3;
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}
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} else if (len == 4) {
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if (startCodeList.get(0)==0 && startCodeList.get(1)==0 && startCodeList.get(2)==0 && startCodeList.get(3)==1) {
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return 4;
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} else if (startCodeList.get(0)==0 && startCodeList.get(1)==0 && startCodeList.get(2)==1) {
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return 3;
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}
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}
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return 0;
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}
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public int GetNalu(InputStream inputStream) {
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mPos = mPos + mLen;
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//<2F><>һ<EFBFBD>β<EFBFBD><CEB2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>룬ֻ<EBA3AC><D6BB>Ϊ<EFBFBD><CEAA><EFBFBD>ƶ<EFBFBD><C6B6>ļ<EFBFBD>ָ<EFBFBD><D6B8>
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if (mFirstFind) {
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mFirstFind = false;
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if (-1 == (mStartCodeLen = FindStartCode(inputStream))) {
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return -1;
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}
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}
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if (mStartCodeLen == 3) {
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mStartCode = "001";
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} else {
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mStartCode = "0001";
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}
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List<Integer> startCodeList = new ArrayList<>();
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int frameLen = 0;
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while(true) {
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int tmp = -1;
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//һ<><D2BB><EFBFBD>ֽ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽڴ<D6BD><DAB4>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD>ж<EFBFBD>ȡ
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try {
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tmp = inputStream.read();
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} catch (Exception e) {
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e.printStackTrace();
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}
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//<2F><>ȡ<EFBFBD><C8A1><EFBFBD>ļ<EFBFBD>β
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if (tmp == -1) {
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mFrameLen = frameLen;
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return -1;
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}
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//֡<><D6A1><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD><EFBFBD>ۼ<EFBFBD>
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frameLen++;
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//<2F><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC>ж<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><DDB1>浽list<73><74>
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startCodeList.add(tmp);
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//<2F><>һ֡<D2BB>ĵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD><D6BD>л<EFBFBD>ȡNALU<4C><55>Ϣ
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if (frameLen == 1) {
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>β<EFBFBD><CEB2>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>볤<EFBFBD><EBB3A4><EFBFBD><EFBFBD>3<EFBFBD><33><EFBFBD><EFBFBD><EFBFBD>ϴ<EFBFBD><CFB4>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽڵ<D6BD><DAB5><EFBFBD><EFBFBD><EFBFBD>
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if (mStartCodeLen == 3) {
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tmp = mFrameFirstByte;
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frameLen++; //֡<><D6A1><EFBFBD>ȼ<EFBFBD><C8BC>ϵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD>
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}
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mCurFrameFirstByte = tmp;
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mForbiddenBit = tmp & 0x80;
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mNalReferenceIdc = tmp & 0x60;
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mNaluType = tmp & 0x1f;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8>ֽڵ<D6BD>list<73><74>
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if (startCodeList.size() < 4) {
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continue;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>룬<EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>0<EFBFBD>ͱ<EFBFBD>ʾ<EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD>
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int startCodeLen = FindStartCode(startCodeList);
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if (startCodeLen > 0) {
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if (startCodeLen == 3) {
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mFrameFirstByte = tmp;
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}
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frameLen = frameLen - 4;
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mLen = frameLen + mStartCodeLen;
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mStartCodeLen = startCodeLen;
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break;
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}
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startCodeList.remove(0);
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}
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mFrameLen = frameLen;
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return 0;
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}
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public boolean ParseH264(String fileName) {
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if (fileName.equals("")) {
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return false;
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}
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InputStream inputStream = null;
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try {
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File file = new File(fileName);
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inputStream = new FileInputStream(file);
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} catch (Exception e) {
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e.printStackTrace();
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inputStream = null;
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}
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if (inputStream == null) {
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return false;
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}
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System.out.println("-----+---------+----- NALU Table -+---------+------------+");
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System.out.println(" NUM | POS | IDC | TYPE | LEN | START_CODE |");
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System.out.println("-----+---------+---------+--------+---------+------------+");
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int iNaluNum = 0;
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while(true) {
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int dataLen = GetNalu(inputStream);
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iNaluNum++;
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String sNaluType = "";
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switch(mNaluType) {
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case NALU_TYPE_SLICE: sNaluType = "SLICE"; break;
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case NALU_TYPE_DPA: sNaluType = "DPA"; break;
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case NALU_TYPE_DPB: sNaluType = "DPB"; break;
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case NALU_TYPE_DPC: sNaluType = "DPC"; break;
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case NALU_TYPE_IDR: sNaluType = "IDR"; break;
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case NALU_TYPE_SEI: sNaluType = "SEI"; break;
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case NALU_TYPE_SPS: sNaluType = "SPS"; break;
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case NALU_TYPE_PPS: sNaluType = "PPS"; break;
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case NALU_TYPE_AUD: sNaluType = "AUD"; break;
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case NALU_TYPE_EOSEQ: sNaluType = "EOSEQ"; break;
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case NALU_TYPE_EOSTREAM: sNaluType = "EOSTREAM"; break;
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case NALU_TYPE_FILL: sNaluType = "FILL"; break;
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}
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String sIdc = "";
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switch(mNalReferenceIdc >> 5) {
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case NALU_PRIORITY_DISPOSABLE:sIdc = "DISPOS"; break;
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case NALU_PRIORITY_LOW: sIdc = "LOW"; break;
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case NALU_PRIORITY_HIGH: sIdc = "HIGH"; break;
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case NALU_PRIORITY_HIGHEST: sIdc = "HIGHEST";break;
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}
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Formatter formatter = new Formatter(System.out);
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formatter.format("%5d| %8d| %8s| %7s| %8d| %11s|\n", iNaluNum, mPos, sIdc, sNaluType, mFrameLen, mStartCode);
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if (dataLen == -1) {
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break;
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}
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}
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try {
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inputStream.close();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return true;
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}
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}
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