106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
#include "opus.h"
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#include <sstream>
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namespace Opus{
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unsigned int Opus_getDuration(const char *part){
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const char config = part[0] >> 3;
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const char code = part[0] & 3;
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double dur = 0;
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if (config < 14){
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switch (config % 4){
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case 0: dur = 10; break;
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case 1: dur = 20; break;
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case 2: dur = 40; break;
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case 3: dur = 60; break;
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}
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} else if (config < 16){
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if (config % 2 == 0){
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dur = 10;
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}else{
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dur = 20;
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}
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} else {
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switch (config % 4){
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case 0: dur = 2.5; break;
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case 1: dur = 5; break;
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case 2: dur = 10; break;
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case 3: dur = 20; break;
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}
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}
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if (code == 0){return (unsigned int)dur;}
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if (code < 3){return (unsigned int)(dur*2);}
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return (unsigned int)(dur*(part[1] & 63));
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}
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std::string Opus_prettyPacket(const char *part, int len){
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if (len < 1){return "Invalid packet (0 byte length)";}
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std::stringstream r;
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const char config = part[0] >> 3;
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const char code = part[0] & 3;
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if ((part[0] & 4) == 4){
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r << "Stereo, ";
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}else{
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r << "Mono, ";
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}
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if (config < 14){
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r << "SILK, ";
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if (config < 4){r << "NB, ";}
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if (config < 8 && config > 3){r << "MB, ";}
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if (config < 14 && config > 7){r << "WB, ";}
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if (config % 4 == 0){r << "10ms";}
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if (config % 4 == 1){r << "20ms";}
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if (config % 4 == 2){r << "40ms";}
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if (config % 4 == 3){r << "60ms";}
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}
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if (config < 16 && config > 13){
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r << "Hybrid, ";
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if (config < 14){
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r << "SWB, ";
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}else{
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r << "FB, ";
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}
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if (config % 2 == 0){
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r << "10ms";
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}else{
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r << "20ms";
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}
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}
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if (config > 15){
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r << "CELT, ";
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if (config < 20){r << "NB, ";}
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if (config < 24 && config > 19){r << "WB, ";}
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if (config < 28 && config > 23){r << "SWB, ";}
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if (config > 27){r << "FB, ";}
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if (config % 4 == 0){r << "2.5ms";}
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if (config % 4 == 1){r << "5ms";}
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if (config % 4 == 2){r << "10ms";}
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if (config % 4 == 3){r << "20ms";}
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}
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if (code == 0){
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r << ": 1 packet (" << (len - 1) << "b)";
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return r.str();
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}
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if (code == 1){
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r << ": 2 packets (" << ((len - 1) / 2) << "b / " << ((len - 1) / 2) << "b)";
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return r.str();
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}
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if (code == 2){
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if (len < 2){return "Invalid packet (code 2 must be > 1 byte long)";}
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if (part[1] < 252){
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r << ": 2 packets (" << (int)part[1] << "b / " << (int)(len - 2 - part[1]) << "b)";
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}else{
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int ilen = part[1] + part[2] * 4;
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r << ": 2 packets (" << ilen << "b / " << (int)(len - 3 - ilen) << "b)";
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}
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return r.str();
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}
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// code 3
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bool VBR = (part[1] & 128) == 128;
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bool pad = (part[1] & 64) == 64;
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bool packets = (part[1] & 63);
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r << ": " << packets << " packets (VBR = " << VBR << ", padding = " << pad << ")";
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return r.str();
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}
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}
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