libdvdread: fix off64_t definition in dvd_filesystem.h for musl

dvd_filesystem.h unconditionally uses the glibc LFS64 off64_t name.
musl's off_t is already 64-bit, so typedef it the same way the other
non-glibc branches already do. This also fixes libdvdnav, which
consumes this staged header.

AI-Generated: Uses Claude Code

Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-multimedia/recipes-multimedia/libdvdread/files/0001-dvd_filesystem.h-fix-off64_t-definition-for-musl.patch

@@ -0,0 +1,39 @@
+From: Khem Raj <khem.raj@oss.qualcomm.com>
+Date: Tue, 29 Sep 2026 02:05:57 +0000
+Subject: [PATCH] dvd_filesystem.h: fix off64_t definition for musl
+
+dvd_filesystem.h defines off64_t itself for _MSC_VER, __GLIBC__, and a
+fixed list of BSD-like libcs (Apple, FreeBSD, OpenBSD, NetBSD,
+DragonFly) whose off_t is already 64-bit. musl falls into none of
+these branches, so off64_t stays undeclared, which breaks any
+consumer of this public installed header (e.g. libdvdnav):
+
+| dvd_filesystem.h:87:5: error: type name requires a specifier or qualifier
+| dvd_filesystem.h:87:39: error: unknown type name 'off64_t'; did you mean 'off_t'?
+
+musl's off_t is also already 64-bit (there is no separate LFS64 API),
+same as the BSDs/Apple, so replace the closed list of libcs with a
+catch-all "else", covering musl (and any other libc in the same
+situation) alongside the ones already listed.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
+---
+ src/dvdread/dvd_filesystem.h | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/src/dvdread/dvd_filesystem.h b/src/dvdread/dvd_filesystem.h
+index 1111111..2222222 100644
+--- a/src/dvdread/dvd_filesystem.h
++++ b/src/dvdread/dvd_filesystem.h
+@@ -37,8 +37,9 @@
+ #elif defined(__GLIBC__)
+ /* sys/types.h may have been included before _LARGEFILE64_SOURCE was defined. */
+ typedef __off64_t off64_t;
+-#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
+-/* off_t is already 64 bit here so off64_t is not provided. */
++#else
++/* musl (and the BSDs, and Apple's libc) do not provide the glibc LFS64
++ * off64_t name; their off_t is already 64 bit, so it can be used as-is. */
+ typedef off_t off64_t;
+ #endif

meta-multimedia/recipes-multimedia/libdvdread/libdvdread_7.1.1.bb

@@ -3,7 +3,9 @@ SECTION = "libs/multimedia"
 LICENSE = "GPL-2.0-or-later"
 LIC_FILES_CHKSUM = "file://COPYING;md5=64e753fa7d1ca31632bc383da3b57c27"
 
-SRC_URI = "https://download.videolan.org/pub/videolan/libdvdread/${PV}/libdvdread-${PV}.tar.xz"
+SRC_URI = "https://download.videolan.org/pub/videolan/libdvdread/${PV}/libdvdread-${PV}.tar.xz \
+           file://0001-dvd_filesystem.h-fix-off64_t-definition-for-musl.patch \
+"
 SRC_URI[sha256sum] = "a0d47876548bec806774bbf8dbf20bb19ba139464383156b32eb8e59915b90a9"
 
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