9.2. Design Overview

9.2.1. System Architecture

Regional Management can create regions, ControloverlaytoitemVideo, andcanControlcurrentlytimehide, orisoverlaytootherVideoMedium.

• Region type

  • Overlay: video overlay region, SupportBitmapimageload, background colormoreetc.Function

  • OverlayEx: currentlyNot supported

  • Cover: video cover region, Supportblockcover

  • CoverEx: extendedvideo cover region, Supportblockcover, withCovernotsameisSupportregion layer

  • Mosaic: mosaiccoverRegion

• region layer

  region layermeansRegionoverlaylevel, layersecondaryvaluelarger, meansRegionDisplaylevelheight. When occurtime, layersecondarywillwilllayersecondary.

  

• BitmapFigureload

  isrefers towillBitmapDatatoRegionMemoryspacein, If isBitmapandRegionFormathas, For exampleBitmapisARGB8888, RegionisARGB1555, need toperformDataConversion. BitmapwillfromMemoryleftonstartfill, Bitmapnotcangreater thanRegionMemory.

  BitmapSetARGBFormattimeColoraccording to standardARGBFormat, ifARGB8888 [31:0] A:R:G:B 8:8:8:8 end.

  BitmapFigureloadSupporttwoMethod:

1. through CVI_RGN_SetBitMap willBitmaptoregion canvasMemory. thisnumberwillpleaseIONMemoryused to storeBitmapData.

2. through CVI_RGN_GetCanvasInfo Getregion canvasMemoryAddress, connectUseBitmapDatamoreincanvas memoryon. morecompleteafter, inby CVI_RGN_UpdateCanvas thiscanvas updateisDisplay.

• RegionAttribute

  Create a Regiontime, need toSetthisRegionAttribute. withOverLayisexample, includingPixel format, Sizeandbackground coloretc..

• Channel attributes

  Channel attributesDefinitionRegioninitemBindChannelonDisplayness. For example, OverlayChannel attributesincludingDisplayPosition.

9.2.2. Precautions

regionModuleInformation(CV184x VOModuleNot supportedRGN)

Type	Module	Device numberRange	Channel numberRange
OVERLAY	VPSS	[0, VPSS_MAX_GRP_NUM -1]	[0, VPSS_MAX_PHY_CHN_NUM -1]
COVER	VPSS	[0, VPSS_MAX_GRP_NUM -1]	[0, VPSS_MAX_PHY_CHN_NUM -1]
COVEREX	VPSS	[0, VPSS_MAX_GRP_NUM -1]	[0, VPSS_MAX_PHY_CHN_NUM -1]
MOSAIC	VPSS	[0, VPSS_MAX_GRP_NUM -1]	[0, VPSS_MAX_PHY_CHN_NUM -1]

Function	OVERLAY	COVER	COVEREX	MOSAIC
Module	VPSS	VPSS	VPSS	VPSS
Pixel format	ARGB1555 ARGB4444 ARGB8888	ARGB1555 ARGB4444 ARGB8888	ARGB1555 ARGB4444 ARGB8888	N/A
overlaylayersecondary	N/A	N/A	Support	N/A
bitsFigurefill	Support	N/A	N/A	N/A