123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
#pragma once
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class FLV_Pack {
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public:
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int len;
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int buf;
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bool isKeyframe;
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char * data;
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std::string tagType(){
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std::string R = "";
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switch (data[0]){
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case 0x09:
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switch (data[11] & 0x0F){
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case 1: R += "JPEG"; break;
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case 2: R += "H263"; break;
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case 3: R += "ScreenVideo1"; break;
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case 4: R += "VP6"; break;
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case 5: R += "VP6Alpha"; break;
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case 6: R += "ScreenVideo2"; break;
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case 7: R += "AVC"; break;
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default: R += "unknown"; break;
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}
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R += " video ";
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switch (data[11] & 0xF0){
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case 0x10: R += "keyframe"; break;
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case 0x20: R += "iframe"; break;
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case 0x30: R += "disposableiframe"; break;
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case 0x40: R += "generatedkeyframe"; break;
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case 0x50: R += "videoinfo"; break;
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}
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if ((data[11] & 0x0F) == 7){
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switch (data[12]){
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case 0: R += " header"; break;
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case 1: R += " NALU"; break;
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case 2: R += " endofsequence"; break;
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}
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}
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break;
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case 0x08:
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switch (data[11] & 0xF0){
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case 0x00: R += "linear PCM PE"; break;
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case 0x10: R += "ADPCM"; break;
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case 0x20: R += "MP3"; break;
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case 0x30: R += "linear PCM LE"; break;
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case 0x40: R += "Nelly16kHz"; break;
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case 0x50: R += "Nelly8kHz"; break;
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case 0x60: R += "Nelly"; break;
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case 0x70: R += "G711A-law"; break;
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case 0x80: R += "G711mu-law"; break;
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case 0x90: R += "reserved"; break;
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case 0xA0: R += "AAC"; break;
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case 0xB0: R += "Speex"; break;
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case 0xE0: R += "MP38kHz"; break;
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case 0xF0: R += "DeviceSpecific"; break;
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default: R += "unknown"; break;
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}
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switch (data[11] & 0x0C){
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case 0x0: R += " 5.5kHz"; break;
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case 0x4: R += " 11kHz"; break;
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case 0x8: R += " 22kHz"; break;
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case 0xC: R += " 44kHz"; break;
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}
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switch (data[11] & 0x02){
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case 0: R += " 8bit"; break;
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case 2: R += " 16bit"; break;
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}
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switch (data[11] & 0x01){
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case 0: R += " mono"; break;
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case 1: R += " stereo"; break;
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}
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R += " audio";
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if ((data[12] == 0) && ((data[11] & 0xF0) == 0xA0)){
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R += " initdata";
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}
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break;
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case 0x12:
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R += "(meta)data";
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break;
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default:
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R += "unknown";
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break;
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}
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return R;
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};//tagtype
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unsigned int tagTime(){
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return (data[4] << 16) + (data[5] << 8) + data[6] + (data[7] << 24);
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}//tagTime getter
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void tagTime(unsigned int T){
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data[4] = ((T >> 16) & 0xFF);
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data[5] = ((T >> 8) & 0xFF);
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data[6] = (T & 0xFF);
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data[7] = ((T >> 24) & 0xFF);
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}//tagTime setter
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FLV_Pack(){
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len = 0; buf = 0; data = 0; isKeyframe = false;
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}//empty constructor
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FLV_Pack(const FLV_Pack& O){
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buf = O.len;
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len = buf;
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if (len > 0){
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data = (char*)malloc(len);
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memcpy(data, O.data, len);
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}else{
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data = 0;
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}
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isKeyframe = O.isKeyframe;
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}//copy constructor
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FLV_Pack & operator= (const FLV_Pack& O){
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if (this != &O){//no self-assignment
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if (data != 0){free(data);}
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buf = O.len;
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len = buf;
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if (len > 0){
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data = (char*)malloc(len);
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memcpy(data, O.data, len);
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}else{
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data = 0;
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}
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isKeyframe = O.isKeyframe;
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}
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return *this;
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}//assignment operator
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};//FLV_Pack
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