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v4l2: Fix support for 32bit mmap

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=793103
This commit is contained in:
Nicolas Dufresne 2018-03-07 14:16:02 -05:00
parent 0da4d409b9
commit 7d4702e2fb
2 changed files with 17 additions and 5 deletions
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20
sys/v4l2/gstv4l2object.c
View file

@ -55,10 +55,6 @@ GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
#define ENCODED_BUFFER_SIZE (2 * 1024 * 1024)
#if SIZEOF_OFF_T == 8 && !defined(mmap64)
#define mmap64 mmap
#endif
enum
{
PROP_0,
@ -460,6 +456,22 @@ gst_v4l2_object_install_m2m_properties_helper (GObjectClass * gobject_class)
GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/* Support for 32bit off_t, this wrapper is casting off_t to gint64 */
#ifdef HAVE_LIBV4L2
#if SIZEOF_OFF_T < 8
static gpointer
v4l2_mmap_wrapper (gpointer start, gsize length, gint prot, gint flags, gint fd,
off_t offset)
{
return v4l2_mmap (start, length, prot, flags, fd, (gint64) offset);
}
#define v4l2_mmap v4l2_mmap_wrapper
#endif /* SIZEOF_OFF_T < 8 */
#endif /* HAVE_LIBV4L2 */
GstV4l2Object *
gst_v4l2_object_new (GstElement * element,
GstObject * debug_object,

2
sys/v4l2/gstv4l2object.h
View file

@ -194,7 +194,7 @@ struct _GstV4l2Object {
gint (*ioctl) (gint fd, gulong request, ...);
gssize (*read) (gint fd, gpointer buffer, gsize n);
gpointer (*mmap) (gpointer start, gsize length, gint prot, gint flags,
gint fd, gint64 offset);
gint fd, off_t offset);
gint (*munmap) (gpointer _start, gsize length);
/* Quirks */