diff options
Diffstat (limited to 'v4l2-apps/libv4l')
| -rw-r--r-- | v4l2-apps/libv4l/ChangeLog | 1 | ||||
| -rw-r--r-- | v4l2-apps/libv4l/libv4lconvert/processing/gamma.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/v4l2-apps/libv4l/ChangeLog b/v4l2-apps/libv4l/ChangeLog index 83fa29a70..3f709a632 100644 --- a/v4l2-apps/libv4l/ChangeLog +++ b/v4l2-apps/libv4l/ChangeLog @@ -1,6 +1,7 @@ libv4l-0.6 ---------- * Link libv4lconvert with -lm for powf by Gregor Jasny +* Fix black screen on devices with hardware gamma control libv4l-0.5.98 ------------- diff --git a/v4l2-apps/libv4l/libv4lconvert/processing/gamma.c b/v4l2-apps/libv4l/libv4lconvert/processing/gamma.c index 7695abcb7..fcb5bb0cf 100644 --- a/v4l2-apps/libv4l/libv4lconvert/processing/gamma.c +++ b/v4l2-apps/libv4l/libv4lconvert/processing/gamma.c @@ -23,7 +23,9 @@ #define CLIP(color) (unsigned char)(((color)>0xff)?0xff:(((color)<0)?0:(color))) static int gamma_active(struct v4lprocessing_data *data) { - return v4lcontrol_get_ctrl(data->control, V4LCONTROL_GAMMA) != 1000; + int gamma = v4lcontrol_get_ctrl(data->control, V4LCONTROL_GAMMA); + + return gamma && gamma != 1000; } static int gamma_calculate_lookup_tables( |