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Graphics Composer and the Display Modules

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  • Graphics Composer and the Display Modules

    This section of FAQ for "Graphics Composer and the Display Modules" covers all the frequently asked questions related to Graphics Composer and
    1. PICASO-GFX2 processor (and related Display Modules)
    2. GOLDELOX-GFX2 processor (and related Display Modules)
    3. PICASO-SGC processor (and related Display Modules)
    4. GOLDELOX-SGC processor (and related Display Modules)

  • #2


    Q01. Which image file formats are supported by the Graphics Composer?

    Ans. Following image file formats are supported,

    -jpg
    -bmp
    -gif
    -ico
    -wmf
    -png

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    • #3


      Q02. Which video file formats are supported by the Graphics Composer?

      Ans. Following video file formats are supported,

      -wmv
      -avi
      -vob
      -mpg

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      • #4


        Q03. What is the format of an image written to the uSD card through the Graphics Composer?

        Ans. The image format is as follows,

        Header (6 bytes as 3 words)
        word1 (Hi:Lo) = width : horizontal size of the image
        word2 (Hi:Lo) = height : vertical size of the image
        Word3 = colour_mode : 16dec = 65K colour mode, 16bits/2bytes per pixel (msb, lsb)

        The header is then followed by the pixel data
        Pixel1…PixelN: Image pixel data and N is the total number of pixels
        N = height x width when colour_mode = 0
        N = height x width x 2 when colour_mode = 1

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        • #5


          Q04. What is the format of a video written to the uSD card through the Graphics Composer?

          Ans. The video format is as follows,

          Header (8 bytes as 4 words)
          word1 (Hi:Lo) = width : horizontal size of the image
          word2 (Hi:Lo) = height : vertical size of the image
          Byte5 = colour_mode : 16dec = 65K colour mode, 16bits/2bytes per pixel (msb, lsb)
          Byte6 = If frame delay is 0 it’s just an image not a movie.
          word4 (Hi:Lo) = No. of frames, only present if it’s video.

          The header is then followed by the pixel data,

          Pixel1…PixelN: 1st Frame pixel data and N is the total number of pixels
          N = height x width when colour_mode = 0
          N = height x width x 2 when colour_mode = 1
          Pixel1…PixelN: 2nd Frame pixel data and N is the total number of pixels
          N = height x width when colour_mode = 0
          N = height x width x 2 when colour_mode = 1
          Pixel1…PixelN: Last Frame pixel data and N is the total number of pixels
          N = height x width when colour_mode = 0
          N = height x width x 2 when colour_mode = 1

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          • #6


            Q05. Can I use 8bit Colour mode for images/videos in the Graphics Composer?

            Ans. No, you cannot use 8bit Colour mode. It's not supported by GOLDELOX-SGC, GOLDELOX-GFX2, PICASO-SGC and PICASO-GFX2 processors.

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            • #7


              Q06. I have partitioned a uSD card in to FAT and nonFAT (Raw). I am using "4DGL, SGC Picaso - uSD Raw - GCI at Specified Offset" Build Type. What should I set the Sector Offset to?

              Ans. If you are using a partitioned uSD card (FAT and nonFAT), the Graphics Composer will write the images/videos to the Raw area with the "4DGL, SGC Picaso - uSD Raw - GCI at Specified Offset" Build Type. Sector offset is from the start of existing Raw partition.

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              • #8


                Q07. I have partitioned a uSD card in to FAT and nonFAT (Raw). I am using "uSD Raw" Build Type. What should I set the Sector Offset to?

                Ans. If you are using a partitioned uSD card (FAT and nonFAT), the Graphics Composer will write the images/videos to the Raw area with the "uSD Raw" Build Type. Sector offset is from the start of existing Raw partition.

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