From e86f89308bf41bdd2562f6928d86c23d129dff99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20T=C5=AFma?= <tumic@cbox.cz>
Date: Mon, 10 Feb 2020 19:40:04 +0100
Subject: [PATCH] Decreased GMAP read block size to 4K

---
 src/map/IMG/subfile.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/map/IMG/subfile.h b/src/map/IMG/subfile.h
index 9dc5f177..49688999 100644
--- a/src/map/IMG/subfile.h
+++ b/src/map/IMG/subfile.h
@@ -7,7 +7,7 @@
 #include "img.h"
 
 
-#define BLOCK_SIZE 8192
+#define BLOCK_SIZE 4096
 
 class SubFile
 {
@@ -146,7 +146,7 @@ protected:
 private:
 	bool readByte(Handle &handle, quint8 &val) const
 	{
-		int blockSize = handle._file ? BLOCK_SIZE : _img->blockSize();
+		int blockSize = _img ? _img->blockSize() : BLOCK_SIZE;
 		val = handle._data.at(handle._blockPos++);
 		handle._pos++;
 		return (handle._blockPos >= blockSize)