[vlc-commits] prefetch: match read size from versions 2.2

[Rémi Denis-Courmont]

vlc/vlc-3.0 | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Sat Jun 29 17:36:03 2019 +0300| [3dfa6d4ddd0922552e6575ded416f62b8ce828f5] | committer: Rémi Denis-Courmont

prefetch: match read size from versions 2.2

VLC versions 2.2 and earlier had 3 "tracks" buffers of 4 MiB each for
the input stream. This resulted in single reads of (up to) 4 MiB.
This patch matches the read size and thus performance of said older
versions.

This matches 6f58cd15a29ec77f5117e709a5c5a7126b9148c8 in a less invasive
fashion. Fixes #19806, #19988, #21470.

> http://git.videolan.org/gitweb.cgi/vlc/vlc-3.0.git/?a=commit;h=3dfa6d4ddd0922552e6575ded416f62b8ce828f5
---

 modules/stream_filter/prefetch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/stream_filter/prefetch.c b/modules/stream_filter/prefetch.c
index b1cb479f07..a31f52c67f 100644
--- a/modules/stream_filter/prefetch.c
+++ b/modules/stream_filter/prefetch.c
@@ -534,7 +534,7 @@ vlc_module_begin()
     add_integer("prefetch-buffer-size", 1 << 14, N_("Buffer size"),
                 N_("Prefetch buffer size (KiB)"), false)
         change_integer_range(4, 1 << 20)
-    add_integer("prefetch-read-size", 1 << 14, N_("Read size"),
+    add_integer("prefetch-read-size", 1 << 24, N_("Read size"),
                 N_("Prefetch background read size (bytes)"), true)
         change_integer_range(1, 1 << 29)
     add_integer("prefetch-seek-threshold", 1 << 14, N_("Seek threshold"),