Re: Hardware Overlay with Push Source

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> Standard TV resolutions:
>
> - V: 288, 240, 576 or 480
> - H: 352, 480, 512, 528, 544, 640, 704, 720, 768
>
> As you can see, only very few of them are multiples of 64
> while most are multiples of 32 and a few only of 16.
>
> All video cards I've had (3 Matrox, 2 nVidia) have no
> problems with the above resolutions (but for the total pixel
> count on older cards). In fact, the vertical granularity
> should be 1 and the horizontal 32 or less. 64 is new to me.
> How did you determine this value for the vertical
> resolution?
>

I tried several resolutions
352 * 288 = FAILED
320 * 200 = SUCCEEDED
192 * 152 = SUCCEEDED
176 * 144 = FAILED
160 * 120 = FAILED

GetCaps results for my video card (NVIDIA Quadro4 NVS with AGP8X) are,

dwVidMemTotal 61669376
dwVidMemFree 61586176
dwMaxVisibleOverlays 1
dwCurrVisibleOverlays 0
dwNumFourCCCodes 27
dwAlignBoundarySrc 0
dwAlignSizeSrc 0
dwAlignBoundaryDest 1
dwAlignSizeDest 0
dwAlignStrideAlign 64
dwMinOverlayStretch 1
dwMaxOverlayStretch 20000
dwMinLiveVideoStretch 1
dwMaxLiveVideoStretch 20000
dwMinHwCodecStretch 1
dwMaxHwCodecStretch 4095000

does dwAlignStrideAlign mean The M value?



.

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