From 16744f540242dd2fac2e2dd83071ec0c5bc4b025 Mon Sep 17 00:00:00 2001
From: Georges Berenger <gberenger@meta.com>
Date: Wed, 29 Nov 2023 14:05:00 -0800
Subject: [PATCH] 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
---
 vrs/utils/PixelFrameJxl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vrs/utils/PixelFrameJxl.cpp b/vrs/utils/PixelFrameJxl.cpp
index aa0faadb..21b545d1 100644
--- 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(