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Speed optimizes:

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- MP4 output optimizations
- DTSC::Meta::getPageNumberForTime speedup
- RelAccX class speedup
- Generic output optimizations
This commit is contained in:
Thulinma 2020-08-21 18:19:27 +02:00
parent b8ba101a55
commit 027bd5f9da
8 changed files with 339 additions and 169 deletions
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11
lib/dtsc.cpp
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@ -2964,10 +2964,13 @@ namespace DTSC{
/// If the timestamp is not available, returns the closest page number that is.
size_t Meta::getPageNumberForTime(uint32_t idx, uint64_t time) const{
const Util::RelAccX &pages = tracks.at(idx).pages;
size_t res = pages.getStartPos();
for (size_t i = pages.getStartPos(); i < pages.getEndPos(); ++i){
if (pages.getInt("avail", i) == 0){continue;}
if (pages.getInt("firsttime", i) > time){break;}
Util::RelAccXFieldData avail = pages.getFieldData("avail");
Util::RelAccXFieldData firsttime = pages.getFieldData("firsttime");
uint32_t res = pages.getStartPos();
uint64_t endPos = pages.getEndPos();
for (uint64_t i = res; i < endPos; ++i){
if (pages.getInt(avail, i) == 0){continue;}
if (pages.getInt(firsttime, i) > time){break;}
res = i;
}
return pages.getInt("firstkey", res);