Hi,
I am using IMX6QUAD SABRE board for Auto infotainment.
I am using the freescale sample application "mxc_v4l2_tvin.c" to capture and display.This is provided along with the BSP.
I am capturing using a composite cable through the CVBS port and displaying it on the LVDS.
When I profile the code I am getting a performance of 30fps for capture.
However I feel that capture should hapen at 60 fps.
When I checked the file "mxc_v4l2_tvin.c" I see that we are sending frame rate to the driver through an ioctl.Please find below the part of the code
parm.parm.capture.timeperframe.numerator = 1;
parm.parm.capture.timeperframe.denominator = 0;
....
if (ioctl(fd_capture_v4l, VIDIOC_S_PARM, &parm) < 0)
However even I change the denominator in the above code to 60 ,30 or to 15,there is no change in the frame rate.It still remains at 30
Query:
1)Does capture always happen at 30fps?Is there any way to make it 60fps?
2)I also tried changing some parts of the driver code inside drivers/media/video/mxc/capture/mxc_v4l2_capture.c and adv7180.c files.
However these changes does not get affected.Please let me know which files should i have a look at.
I have attached the file for refrence.
Thanks in advance
ARUN KRISHNA
Original Attachment has been moved to: mxc_v4l2_tvin.c.zip
