Resizer constrains on DM6467

hou.jianwen said:

I found the resizer on DM6467 will output the image with incorrect chroma when the x, y of out buffer dimension is not set to zero. 

Which specific values from the VDCE driver's structures are you referring to? I am not sure what you mean by 'x, y of out buffer dimension' as there are several dimensions and offsets defined within the VDCE driver, if you can give me a specific structure name I can look into it further.

hou.jianwen said:

· Sub-picture mode is not supported due to hardware limitations.

The sub-picture mode is not supported by the hardware, the driver will simply not try to activate it.

hou.jianwen said:

· Horizontal and Vertical Phase Values for resizer are considered as zero.

This refers to the RSZ_HPHASE and RSZ_VPHASE registers described in section 3.55 and 3.56 of SPRUEQ9a, they must be 0 for the supported use cases of the VDCE, I suspect this is just saying that the driver will leave them at 0.

I am working on the dvsdk_1_40_02_33 and dmai_1_10_00_06.

I wonder if the VDCE can resize the image to any position of the output buffer. In my experience, I set the vertical start position ("y" of the dest buffer dimensions) to a value larger than 0, then the chroma of the output image is incorrect.

I look up the LSP_1.30_DM6467_Video_VDCE_Driver_User_Guide.pdf in PSP_01_30_00_082. It says VDCE has some constrains, I thought these constrains maybe can explain  it.

I would certainly follow any contraints/recommendations described in the LSP_1.30_DM6467_Video_VDCE_Driver_User_Guide.pdf (software side); In addition, I would look at the VDCE User Guide http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=sprueq9a (hardware side).