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Some fixes for metadata rewriting in DTSC::File, optimized live fragmenter somewhat.

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This commit is contained in:
Thulinma 2013-03-21 14:23:49 +01:00
parent bf69dacefd
commit 4a79862111
2 changed files with 11 additions and 20 deletions
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29
lib/dtsc.cpp
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@ -323,26 +323,7 @@ void DTSC::Stream::updateHeaders(){
metadata["keylen"].append(buffers[keyframes[0].b]["time"].asInt() - buffers[keyframes[1].b]["time"].asInt());
long long int firstFragNo = -1;
metadata["frags"].null();
long long int currFrag = metadata["keytime"][0u].asInt() / 10000;
if (currFrag == 0){
long long int fragLen = 1;
long long int fragDur = metadata["keylen"][0u].asInt();
for (unsigned int j = 1; j < metadata["keytime"].size(); j++){
if (metadata["keytime"][j].asInt() / 10000 > currFrag){
if (firstFragNo == -1){
firstFragNo = currFrag;
}
JSON::Value thisFrag;
thisFrag["num"] = metadata["keynum"][0u];
thisFrag["len"] = fragLen;
thisFrag["dur"] = fragDur;
metadata["frags"].append(thisFrag);
break;
}
fragLen++;
fragDur += metadata["keylen"][j].asInt();
}
}
long long int currFrag = -1;
for (unsigned int i = 1; i < metadata["keytime"].size(); i++){
if (metadata["keytime"][i].asInt() / 10000 > currFrag){
currFrag = metadata["keytime"][i].asInt() / 10000;
@ -491,6 +472,11 @@ JSON::Value & DTSC::File::getMeta(){
return metadata;
}
/// Returns the header metadata for this file as JSON::Value.
JSON::Value & DTSC::File::getFirstMeta(){
return firstmetadata;
}
/// (Re)writes the given string to the header area if the size is the same as the existing header.
/// Forces a write if force is set to true.
bool DTSC::File::writeHeader(std::string & header, bool force){
@ -565,6 +551,9 @@ void DTSC::File::readHeader(int pos){
return;
}
metadata = JSON::fromDTMI(strbuffer);
if (pos == 0){
firstmetadata = metadata;
}
//if there is another header, read it and replace metadata with that one.
if (metadata.isMember("moreheader") && metadata["moreheader"].asInt() > 0){
readHeader(metadata["moreheader"].asInt());

2
lib/dtsc.h
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@ -69,6 +69,7 @@ namespace DTSC {
File(std::string filename, bool create = false);
~File();
JSON::Value & getMeta();
JSON::Value & getFirstMeta();
long long int getLastReadPos();
bool writeHeader(std::string & header, bool force = false);
long long int addHeader(std::string & header);
@ -82,6 +83,7 @@ namespace DTSC {
std::string strbuffer;
JSON::Value jsonbuffer;
JSON::Value metadata;
JSON::Value firstmetadata;
std::map<int, long> frames;
std::map<int, long> msframes;
long long int currtime;