diff options
Diffstat (limited to 'v4l2-apps/lib/libv4l/libv4l1/libv4l1.c')
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4l1/libv4l1.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c b/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c index 39f2d29e0..797c8768a 100644 --- a/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c +++ b/v4l2-apps/lib/libv4l/libv4l1/libv4l1.c @@ -259,6 +259,15 @@ int v4l1_open (const char *file, int oflag, ...) struct v4l2_format fmt2; struct v4l2_input input2; struct v4l2_standard standard2; + int v4l_device = 0; + + /* check if we're opening a video4linux2 device */ + if (!strncmp(file, "/dev/video", 10) || !strncmp(file, "/dev/v4l/", 9)) { + /* Some apps open the device read only, but we need rw rights as the + buffers *MUST* be mapped rw */ + oflag = (oflag & ~O_ACCMODE) | O_RDWR; + v4l_device = 1; + } /* original open code */ if (oflag & O_CREAT) @@ -276,11 +285,7 @@ int v4l1_open (const char *file, int oflag, ...) fd = syscall(SYS_open, file, oflag); /* end of original open code */ - if (fd == -1) - return fd; - - /* check if we're opening a video4linux2 device */ - if (strncmp(file, "/dev/video", 10) && strncmp(file, "/dev/v4l/", 9)) + if (fd == -1 || !v4l_device) return fd; /* check that this is an v4l2 device, no need to emulate v4l1 on |