Boost jxl decoding parallel processing

Summary: We can speed up jxl decoding with more threads. Not sure why I limited that number. Reviewed By: kiminoue7 Differential Revision: D51650359 fbshipit-source-id: e50cac0f9be9555adda9029b605ce264ecbcde49
facebookresearch · Nov 29, 2023 · 16744f5 · 16744f5
1 parent 9e1be7d
commit 16744f5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/vrs/utils/PixelFrameJxl.cpp b/vrs/utils/PixelFrameJxl.cpp
@@ -148,7 +148,7 @@ bool PixelFrame::readJxlFrame(const vector<uint8_t>& jxlBuf, bool decodePixels)
 
   size_t hw_threads = JxlThreadParallelRunnerDefaultNumWorkerThreads();
   JxlThreadParallelRunnerPtr runner_fixed =
-      JxlThreadParallelRunnerMake(nullptr, std::min<size_t>(hw_threads, 4));
+      JxlThreadParallelRunnerMake(nullptr, std::min<size_t>(hw_threads, 16));
   DEC_CHECK(JxlDecoderSetParallelRunner(dec, JxlThreadParallelRunner, runner_fixed.get()));
 
   DEC_CHECK(JxlDecoderSubscribeEvents(