|
⇤ ← Revision 1 as of 2008-11-24 03:20:58
Size: 17
Comment:
|
Size: 640
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 2: | Line 2: |
The CX2388x video stream (function 0) allows for raw pixel data to be transferred either from an analog frontend or VIP-compliant device into host memory. The raw video stream supports a variety of pixel formats, and can utilize either packed or planar color formats. One DMA channel is used to transfer either packed pixel data or the Y color plane, while two additional channels are provided to transfer the U and V color planes (obviously for planar formats only). A fourth DMA channel can be used to transfer vertical blanking interval (VBI) data, which is typically used to convey teletext or closed captioning. |
Raw Video
The CX2388x video stream (function 0) allows for raw pixel data to be transferred either from an analog frontend or VIP-compliant device into host memory. The raw video stream supports a variety of pixel formats, and can utilize either packed or planar color formats. One DMA channel is used to transfer either packed pixel data or the Y color plane, while two additional channels are provided to transfer the U and V color planes (obviously for planar formats only). A fourth DMA channel can be used to transfer vertical blanking interval (VBI) data, which is typically used to convey teletext or closed captioning.