TheCloud/dwarfs
1
0
Fork 0
mirror of https://github.com/mhx/dwarfs.git synced 2025-09-15 07:16:13 -04:00
Code Issues Packages Projects Releases Wiki Activity

Specialized segmenters for typical PCM audio granularities

Browse Source 
These are significantly faster (20-35%) than the variable
granularity segmenter.
This commit is contained in:
Marcus Holland-Moritz 2023-08-27 18:23:05 +02:00
parent 88f2d44f05
commit bf4da2fb36
1 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/dwarfs/segmenter.cpp
View File

@ -1237,12 +1237,30 @@ create_segmenter2(logger& lgr, progress& prog,
segmenter::config const& cfg,
compression_constraints const& cc, size_t total_size,
segmenter::block_ready_cb block_ready) {
if (!cc.granularity || cc.granularity.value() == 1) {
uint32_t granularity = cc.granularity ? cc.granularity.value() : 1;
auto make_const_granularity_segmenter = [&]<uint32_t Granularity>() {
return make_unique_logging_object<
segmenter::impl,
constant_granularity_segmenter_<SegmentingPolicy, 1>::template type,
constant_granularity_segmenter_<SegmentingPolicy,
Granularity>::template type,
logger_policies>(lgr, prog, std::move(blkmgr), cfg, total_size,
std::move(block_ready));
};
switch (granularity) {
case 1:
return make_const_granularity_segmenter.template operator()<1>();
case 2: // 16-bit mono PCM audio
return make_const_granularity_segmenter.template operator()<2>();
case 3: // 24-bit mono PCM audio
return make_const_granularity_segmenter.template operator()<3>();
case 4: // 16-bit stereo PCM audio
return make_const_granularity_segmenter.template operator()<4>();
case 6: // 24-bit stereo PCM audio
return make_const_granularity_segmenter.template operator()<6>();
default:
break;
}
return make_unique_logging_object<