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AMF0 parsing, chunk merging

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Thulinma 2010-07-28 18:47:31 +02:00
parent 6bff69af30
commit d642d2f111
5 changed files with 238 additions and 16 deletions
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151
Connector_RTMP/amf.cpp Normal file
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@ -0,0 +1,151 @@
#include <vector>
#include <string.h>
#include <string>
class AMFType {
public:
double NumValue(){return numval;};
std::string StrValue(){return strval;};
AMFType(double val){strval = ""; numval = val;};
AMFType(std::string val){strval = val; numval = 0;};
private:
std::string strval;
double numval;
};//AMFType
//scans the vector for the indice, returns the next AMFType from it or null
AMFType * getAMF(std::vector<AMFType> * vect, std::string indice){
std::vector<AMFType>::iterator it;
for (it=vect.begin(); it < vect.end(); it++){
if ((*it)->StrValue() == indice){it++; return *it;}
}
return 0;
}//getAMF
std::vector<AMFType> * parseAMF(unsigned char * data, unsigned int len){
std::vector<AMFType> * ret = new std::vector<AMFType>;
unsigned int i = 0;
std::string tmpstr;
unsigned int tmpi = 0;
unsigned char tmpdbl[8];
while (i < len){
switch (data[i]){
case 0x00://number
tmpdbl[7] = data[i+1];
tmpdbl[6] = data[i+2];
tmpdbl[5] = data[i+3];
tmpdbl[4] = data[i+4];
tmpdbl[3] = data[i+5];
tmpdbl[2] = data[i+6];
tmpdbl[1] = data[i+7];
tmpdbl[0] = data[i+8];
ret->push_back(*(double*)tmpdbl);
fprintf(stderr, "AMF: Number %f\n", *(double*)tmpdbl);
i += 8;
break;
case 0x01://bool
if (data[i+1] == 0){
ret->push_back((double)0);
fprintf(stderr, "AMF: Bool false\n");
}else{
ret->push_back((double)1);
fprintf(stderr, "AMF: Bool true\n");
}
++i;
break;
case 0x0C://long string
tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];
tmpstr = (char*)(data+i+5);
ret->push_back(tmpstr);
i += tmpi + 4;
fprintf(stderr, "AMF: String %s\n", tmpstr.c_str());
break;
case 0x02://string
tmpi = data[i+1]*256+data[i+2];
tmpstr = (char*)(data+i+3);
ret->push_back(tmpstr);
i += tmpi + 2;
fprintf(stderr, "AMF: String %s\n", tmpstr.c_str());
break;
case 0x05://null
case 0x06://undefined
case 0x0D://unsupported
fprintf(stderr, "AMF: Null\n");
ret->push_back((double)0);
break;
case 0x03://object
++i;
while (data[i] + data[i+1] != 0){
tmpi = data[i]*256+data[i+1];
tmpstr = (char*)(data+i+2);
ret->push_back(tmpstr);
i += tmpi + 2;
fprintf(stderr, "AMF: Indice %s\n", tmpstr.c_str());
switch (data[i]){
case 0x00://number
tmpdbl[7] = data[i+1];
tmpdbl[6] = data[i+2];
tmpdbl[5] = data[i+3];
tmpdbl[4] = data[i+4];
tmpdbl[3] = data[i+5];
tmpdbl[2] = data[i+6];
tmpdbl[1] = data[i+7];
tmpdbl[0] = data[i+8];
ret->push_back(*(double*)tmpdbl);
fprintf(stderr, "AMF: Value Number %f\n", *(double*)tmpdbl);
i += 8;
break;
case 0x01://bool
if (data[i+1] == 0){
ret->push_back((double)0);
fprintf(stderr, "AMF: Value Bool false\n");
}else{
ret->push_back((double)1);
fprintf(stderr, "AMF: Value Bool true\n");
}
++i;
break;
case 0x0C://long string
tmpi = data[i+1]*256*256*256+data[i+2]*256*256+data[i+3]*256+data[i+4];
tmpstr = (char*)(data+i+5);
ret->push_back(tmpstr);
i += tmpi + 4;
fprintf(stderr, "AMF: Value String %s\n", tmpstr.c_str());
break;
case 0x02://string
tmpi = data[i+1]*256+data[i+2];
tmpstr = (char*)(data+i+3);
ret->push_back(tmpstr);
i += tmpi + 2;
fprintf(stderr, "AMF: Value String %s\n", tmpstr.c_str());
break;
case 0x05://null
case 0x06://undefined
case 0x0D://unsupported
fprintf(stderr, "AMF: Value Null\n");
ret->push_back((double)0);
break;
default:
fprintf(stderr, "Error: Unknown AMF object contents type %hhx - returning.\n", data[i]);
break;
}
++i;
}
i += 2;
break;
case 0x07://reference
case 0x08://array
case 0x0A://strict array
case 0x0B://date
case 0x0F://XML
case 0x10://typed object
case 0x11://AMF+
default:
fprintf(stderr, "Error: Unknown AMF type %hhx - returning.\n", data[i]);
return ret;
break;
}
++i;
}
return ret;
}//parseAMF