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Archived:无法捕捉视频播放区域的内容

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Archived.png存档: 这篇文章是存档,因为考虑到今天它与第三方开发者建立商业解决方案不相关。

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兼容于
平台: S60 3rd Edition
S60 3rd Edition (initial release)

文章
翻译:
hoolee
最后由 hamishwillee 在 14 Jun 2013 编辑
  • 详细描述

Symbian或S60平台级API没有API可以访问视频缓冲,以便获取视频播放中的屏幕截图。

CWsScreenDevice类中的CopyScreenToBitmap()方法或RHardwareBitmap或通过UserSvr::ScreenInfo()方法获取的屏幕地址都无法捕捉到视频播放时的屏幕截图。

所有上述方法都只能捕捉到视频区域的空白矩形。这是因为MMF视频控制器无法通过window server处理视频帧,只能简单的请求一个块安全的绘制区域,然后使用Direct Screen Access来绘制解码后的帧图像。Symbian OS无法访问到底层的LCD帧缓冲。

This page was last modified on 14 June 2013, at 05:59.
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