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Encoder format 4-2-0 only supported?

Charles H
Intellectual 895 points
Other Parts Discussed in Thread: TMS320DM8168

I had found a previous submission that stated that only 4-2-0 encoding is supported in the DM8168, is that correct?

I believe the DM8168 Video input will accept 4-2-2 and 4-2-0 correct? But the Software Encoding will only support 4-2-0?

Can anyone clarify that?

  • 0
    Prodigy 110 points

    Texture formats:
    – RGBA 8888, 565, 1555
    – Monochromatic 8, 16, 16f, 32f, 32int
    – Dual channel, 8:8, 16:16, 16f:16f
    – Compressed textures PVR-TC1, PVR-TC2, ETC1
    – Programmable support for all YUV formats

    This was taken from http://www.ti.com/lit/ds/symlink/tms320dm8168.pdf

    page 176.  Its not really a definitive answer to your question.

    from the same document at 2.1.5.2 I found

    Supported video input formats are 4:2:0 (aligned-chroma, semi-planar, frame/field), and 4:2:2 (planar,
    semi-planar, frame/field). YUV420, the output formats of the HDVICP2 and video formats of captured
    external digital video data, is supported.

    also,

    2.2.1 Features
    • Input:
    – YUV420 Semi-planar Tiled Memory
    – YUV422 Semi-planar Tiled Memory
    – YUV420 Semi-planar Non-Tiled Memory
    – YUV422 Semi-planar Non-Tiled Memory
    – YUV422 YUYV Interleaved Non-Tiled Memory

    I would recommend reading that document if you're still curious about something.

  • 0 in reply to Jonathan Mulvaine
    Intellectual 895 points

    The link you show doesn't have pg 176 refer to the encoder..Can you clarify where you find those statements?

    Also I think you are addressing the hardware inputs, but can the software encoding actually do 4-2-2 format? I checked Ittiam's website and it doesn't show a 4-2-2 working with the DM8168..

    Can you verify there is a working software codec with the DM8168 for a 4-2-2 input?

  • 0 in reply to Charles H
    TI__Expert 5000 points

    All Video Encoding or Decoding happening in HDVICP2 of DM81XX happens only in 4:2:0 Semi Planar format.