BT878开发包

one BT878 capture 4 inputs
max. 4 BT878 capture 16 inputs in one system.
(if you have 4 BT878 in one card, make sure there is NO any external mux. if there is external mux pls provide the external mux/switch structure and we can implement it.)

[编辑 -  2/19/05 by  hong]

谢谢......收藏！

hi hong!
   如果假设显示卡只支持RGB565而你采集回来的格式为RGB555,如果不用StretchDIBits，并且象StretchDIBits那样实现放大缩小，且不涉及再对已采集的数据进行memcpy,你会怎样显示你的采集图像呢？


[编辑 -  2/1/05 by  kuhaipiaoliu]

as a simple demo, RGB555 is used in demo project for StretchDIBits;
it is better to use YUV422 format if you are a professional developer.
if you use memcpy you should know very well your display buffer and video renderer.

use DirectX is a better way.

调用StretchDIBits在win98下的一些机子上会出现不正常的现象，在window2000下完全没问题。

使用directdraw显示，要避免数据拷贝，用Blt方式可以实现放大缩小，但用指定DDSD_LPSURFACE方法创建的好像只能是当前显卡RGB565格式的表面，怎样才能实现RGB555自动转成RGB565。如果用指定DDSD_PIXELFORMAT是能按指定格式创建表面。出现的问题是同时指定DDSD_LPSURFACE | DDSD_PIXELFORMAT ，创建表面总不能成功!有什么要注意的地方吗？

1. Set BT878 sdk to output yuv422 data;
2. create surface with this format:
DDPIXELFORMAT ddpfBackSurfaceFormat = {
sizeof(DDPIXELFORMAT), DDPF_FOURCC,MAKEFOURCC('Y','U','Y','2'),0,0,0,0,0};
3. copy the yuv422 data on this surface;
4. Blt to screen surface.

用Blt方式可以实现放大缩小

one thing to note:
if(mysd.dwWidth*nBytePerPixel == (DWORD)mysd.lPitch)
{
// you can do block copy or just pass this surface buffer into BT878 SDK to get YUV422 data
}
else
{
// you have to copy line by line
}

老大.....你这个好像只是提供了个dll呀.....有没有源代码呀 :P

hong:您好  您的QQ是多少呀