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目前它只是一个物联网通信的工具，包含
1、西门子S7通信协议，支持西门子S1500，S1200，S400，S300，S200Smart，西门子机床828D;
2、Modbus通信协议，支持ModbusTcp, ModbusRtuOverTcp, ModbusAsciiOverTcp, ModbusTcpServer;
3、三菱Melsec（MC）通信协议，支持PLC iQ-R系列, Q/L系列, QnA系列, A系列, 目前只测试了L系列和FX5U;
4、RTSP, RTCP, RTP, H264, MP4 (FMP4)协议，RTSP + H264 + FMP4 + WebSocket + MSE + WEB;
5、基础字节数组解析转换工具;
The newest version!
/*
* MIT License
*
* Copyright (c) 2021-2099 Oscura (xingshuang)
*
* 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.github.xingshuangs.iot.protocol.rtp.model.payload;
import lombok.Getter;
/**
* sps信息
*
* @author xingshuang
*/
@Getter
public class SeqParameterSet {
private int profileIdc;
private boolean constraintSet0Flag;
private boolean constraintSet1Flag;
private boolean constraintSet2Flag;
private boolean constraintSet3Flag;
private boolean constraintSet4Flag;
private boolean constraintSet5Flag;
private long reservedZero2Bits;
private int levelIdc;
private int seqParameterSetId;
private int log2MaxFrameNumMinus4;
private int picOrderCntType;
private int log2MaxPicOrderCntKLsbMinus4;
private int numRefFrames;
private boolean gapsInFrameNumValueAllowedFlag;
private int picWidthInMbsMinus1;
private int picHeightInMapUnitsMinus1;
private boolean frameMbsOnlyFlag;
private boolean mbAdaptiveFrameFieldFlag;
private boolean direct8x8InferenceFlag;
private boolean frameCroppingFlag;
private int frameCropLeftOffset;
private int frameCropRightOffset;
private int frameCropTopOffset;
private int frameCropBottomOffset;
private boolean deltaPicOrderAlwaysZeroFlag;
private int offsetForNonRefPic;
private int offsetForTopToBottomField;
private boolean vuiParametersPresentFlag;
private boolean aspectRatioInfoPresentFlag;
private double sarScale = 1;
/**
* Video width.
* (视频宽度)
*
* @return 宽度
*/
public int getWidth() {
return (int) Math.ceil((((this.picWidthInMbsMinus1 + 1) * 16) - this.frameCropLeftOffset * 2 - this.frameCropRightOffset * 2) * this.sarScale);
}
/**
* Video height.
* (视频高度)
*
* @return 高度
*/
public int getHeight() {
return ((2 - (this.frameMbsOnlyFlag ? 1 : 0)) * (this.picHeightInMapUnitsMinus1 + 1) * 16)
- ((this.frameMbsOnlyFlag ? 2 : 4) * (this.frameCropTopOffset + this.frameCropBottomOffset));
}
/**
* Create sps by byte array.
* (根据字节数组构建sps)
*
* @param data 字节数组
* @return sps
*/
public static SeqParameterSet createSPS(byte[] data) {
SeqParameterSet sps = new SeqParameterSet();
ExpGolomb expGolomb = new ExpGolomb(data);
// filter header
expGolomb.skipBit(8);
sps.profileIdc = (int) expGolomb.readNBit(8);
sps.constraintSet0Flag = expGolomb.readBoolean();
sps.constraintSet1Flag = expGolomb.readBoolean();
sps.constraintSet2Flag = expGolomb.readBoolean();
sps.constraintSet3Flag = expGolomb.readBoolean();
sps.constraintSet4Flag = expGolomb.readBoolean();
sps.constraintSet5Flag = expGolomb.readBoolean();
sps.reservedZero2Bits = expGolomb.readNBit(2);
sps.levelIdc = (int) expGolomb.readNBit(8);
sps.seqParameterSetId = expGolomb.readUE();
someProfilesHandle(sps, expGolomb);
sps.log2MaxFrameNumMinus4 = expGolomb.readUE();
sps.picOrderCntType = expGolomb.readUE();
if (sps.picOrderCntType == 0) {
sps.log2MaxPicOrderCntKLsbMinus4 = expGolomb.readUE();
} else if (sps.picOrderCntType == 1) {
sps.deltaPicOrderAlwaysZeroFlag = expGolomb.readBoolean();
sps.offsetForNonRefPic = expGolomb.readSE();
sps.offsetForTopToBottomField = expGolomb.readSE();
int numRefFramesInPicOrderCntCycle = expGolomb.readUE();
for (int i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
expGolomb.readSE();
}
}
sps.numRefFrames = expGolomb.readUE();
sps.gapsInFrameNumValueAllowedFlag = expGolomb.readBoolean();
sps.picWidthInMbsMinus1 = expGolomb.readUE();
sps.picHeightInMapUnitsMinus1 = expGolomb.readUE();
sps.frameMbsOnlyFlag = expGolomb.readBoolean();
if (!sps.frameMbsOnlyFlag) {
sps.mbAdaptiveFrameFieldFlag = expGolomb.readBoolean();
}
sps.direct8x8InferenceFlag = expGolomb.readBoolean();
sps.frameCroppingFlag = expGolomb.readBoolean();
if (sps.frameCroppingFlag) {
sps.frameCropLeftOffset = expGolomb.readUE();
sps.frameCropRightOffset = expGolomb.readUE();
sps.frameCropTopOffset = expGolomb.readUE();
sps.frameCropBottomOffset = expGolomb.readUE();
}
sps.vuiParametersPresentFlag = expGolomb.readBoolean();
sps.aspectRatioInfoPresentFlag = expGolomb.readBoolean();
if (sps.vuiParametersPresentFlag && sps.aspectRatioInfoPresentFlag) {
sps.sarScale = calculateSarRatio(expGolomb);
}
return sps;
}
/**
* Handling of special profiles.
* (特殊profiles的处理)
*
* @param sps sps
* @param expGolomb 编码
*/
private static void someProfilesHandle(SeqParameterSet sps, ExpGolomb expGolomb) {
if (sps.profileIdc == 100
|| sps.profileIdc == 110
|| sps.profileIdc == 122
|| sps.profileIdc == 244
|| sps.profileIdc == 44
|| sps.profileIdc == 83
|| sps.profileIdc == 86
|| sps.profileIdc == 118
|| sps.profileIdc == 128) {
int chromaFormatIdc = expGolomb.readUE();
if (chromaFormatIdc == 3) {
expGolomb.skipBit(1);
}
expGolomb.skipUE();
expGolomb.skipUE();
expGolomb.read1Bit();
if (expGolomb.readBoolean()) {
int scalingListCount = (chromaFormatIdc != 3) ? 8 : 12;
for (int i = 0; i < scalingListCount; i++) {
if (expGolomb.readBoolean()) { // seq_scaling_list_present_flag[ i ]
if (i < 6) {
expGolomb.skipScalingList(16);
} else {
expGolomb.skipScalingList(64);
}
}
}
}
}
}
/**
* Calculate sar ratio.
* (计算sarRatio)
*
* @param expGolomb ex golomb encode.
* @return sarRatio
*/
private static double calculateSarRatio(ExpGolomb expGolomb) {
int sarRatio1 = -1;
int sarRatio2 = -1;
int aspectRatioIdc = (int) expGolomb.readNBit(8);
switch (aspectRatioIdc) {
case 1:
sarRatio1 = 1;
sarRatio2 = 1;
break;
case 2:
sarRatio1 = 12;
sarRatio2 = 11;
break;
case 3:
sarRatio1 = 10;
sarRatio2 = 11;
break;
case 4:
sarRatio1 = 16;
sarRatio2 = 11;
break;
case 5:
sarRatio1 = 40;
sarRatio2 = 33;
break;
case 6:
sarRatio1 = 24;
sarRatio2 = 11;
break;
case 7:
sarRatio1 = 20;
sarRatio2 = 11;
break;
case 8:
sarRatio1 = 32;
sarRatio2 = 11;
break;
case 9:
sarRatio1 = 80;
sarRatio2 = 33;
break;
case 10:
sarRatio1 = 18;
sarRatio2 = 11;
break;
case 11:
sarRatio1 = 15;
sarRatio2 = 11;
break;
case 12:
sarRatio1 = 64;
sarRatio2 = 33;
break;
case 13:
sarRatio1 = 160;
sarRatio2 = 99;
break;
case 14:
sarRatio1 = 4;
sarRatio2 = 3;
break;
case 15:
sarRatio1 = 3;
sarRatio2 = 2;
break;
case 16:
sarRatio1 = 2;
sarRatio2 = 1;
break;
case 255:
sarRatio1 = (int) ((expGolomb.readNBit(8) << 8) | expGolomb.readNBit(8));
sarRatio2 = (int) ((expGolomb.readNBit(8) << 8) | expGolomb.readNBit(8));
break;
default:
break;
}
if (sarRatio1 > 0 && sarRatio2 > 0) {
return sarRatio1 * 1.0 / sarRatio2;
} else {
return 1;
}
}
}
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