[vlc-commits] [Git][videolan/vlc][master] libmpeg2: fix PPC regression
Hugo Beauzée-Luyssen (@chouquette)
gitlab at videolan.org
Sun Aug 1 08:55:03 UTC 2021
Hugo Beauzée-Luyssen pushed to branch master at VideoLAN / VLC
Commits:
9fdfdd30 by Lyndon Brown at 2021-07-31T18:30:07+00:00
libmpeg2: fix PPC regression
00d1f50eff60f30ac77ffe8f4df6af4668affcbd introduced a regression for PPC
since the `signal()` based detection for altivec in libmpeg2 is not thread
safe unlike our own. here we restore use of our own detection for PPC,
bypassing libmpeg2's unsafe auto-detection otherwise triggered in
`mpeg2_init()`.
fixes #25948.
- - - - -
1 changed file:
- modules/codec/libmpeg2.c
Changes:
=====================================
modules/codec/libmpeg2.c
=====================================
@@ -197,6 +197,11 @@ static int OpenDecoder( vlc_object_t *p_this )
p_sys->p_gop_user_data = NULL;
p_sys->i_gop_user_data = 0;
+#if defined( __powerpc__ ) || defined( __ppc__ ) || defined( __ppc64__ )
+ /* libmpeg's detection is not thread safe for ppc-altivec */
+ mpeg2_accel( vlc_CPU_ALTIVEC() ? MPEG2_ACCEL_PPC_ALTIVEC : 0 );
+#endif
+
/* Initialize decoder */
p_sys->p_mpeg2dec = mpeg2_init();
if( p_sys->p_mpeg2dec == NULL)
View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/9fdfdd302b150e31511f6f4ae903b4640fd76ea4
--
View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/9fdfdd302b150e31511f6f4ae903b4640fd76ea4
You're receiving this email because of your account on code.videolan.org.
More information about the vlc-commits
mailing list