2.3.4.1 Auto Detection

When the RawGfx mode is activated for the first time on a file, it tries to auto-detect the file format from the file extension, and then to guess all graphics format settings. Auto detection can also be triggered from the RawGfx|View|Preset|AutoDetect menu item, or the button on the Format Panel.

For Bitmap and Sprite files, format settings and color palette are read from the file contents.

For raw YUV formats, format settings are guessed from the filename. If an image resolution keyword is recognized, it will be used to specify the frame size. Otherwise the first two numbers in the filename are taken as width and height. The YUV byte order is guessed from keywords in the filename (YUV, 422), and by statistical analysis of the pixel data.

List of Recognized File Formats

• *.bmp Bitmap files: settings will be read from the file
• *.spr RISC OS Sprite files: settings for the first image in the container will be read from the file
• *.yuv YUV420 planar raw image data: width, height and resolution keywords will be parsed from the filename
• *.422 YUV422 chunky raw image data: width, height and resolution keywords will be parsed from the filename, YUYV byteorder is analyzed in the file

List of Recognized Image Resolution Keywords

See also: RawGfx|View|Preset|AutoDetect