Tool/software: TI-RTOS
Hi,
I want to achieve real-time zoom effect (crop + resize). My idea is to use two video pipelines that will be connected with write-back pipeline. First video pipeline will be used for cropping and second for resize. Can you please tell me is this possible to achieve?
Best regards,
Stefan.
Hi Rishabh,
This is my original test image:
After modifying the registers DISPC_VID1_SIZE and DISPC_VID1_POSITION I can get following:
This change actually sets the position of the input frame onto output frame, but I want to set X and Y offset of the input frame to get real crop. Can you tell me which register should be changed in order to achieve that?
Best regards,
Stefan.
Hi Rishabh,
I understand the process but I can't get what I want. I have simple usecase and after usecase start, some register values are:
DISPC_VID1_PICTURE_SIZE -> 0x580010E4 = 0x2CF04FF (Real image size in memory is 1280x720, before upscale)
DISPC_VID1_SIZE -> 0x580010C8 = 0x437077F (Image after resize is 1920x1080)
This is expected and I can see correct image on the screen, image is up-scaled on full screen.
Now, for example, I want to crop 1/4 of the image - upper/left corner should be visible on the screen and should be resized to full screen (1920x1080). I changed following register:
DISPC_VID1_PICTURE_SIZE: wr 0x580010E4 0x167027F (640x360)
But, image on the screen is on the mess.
Did I make mistake somewhere? Any suggestions?
Best regards,
Stefan.
Rishabh,
Not yet. After updating scaling coefficients, output image size is same as last image I sent you. Only difference is that now quality of the image is better.
Before scaling coefficients update:
After scaling coefficients update:
Still, image is not resized. Register DISPC_VID1_SIZE value is 0x437077F -> 1920x1080.
Considering register values are changed in real-time, after usecase start, is there anything else that should be changed?
Best regards,
Stefan.
