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RK3528 DRM 支持 OSD吗？ #704

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circlefangzm opened this issue Nov 1, 2024 · 2 comments
Open

RK3528 DRM 支持 OSD吗？ #704

circlefangzm opened this issue Nov 1, 2024 · 2 comments

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@circlefangzm
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使用yuv格式的plane，解码后通过PRIME给DRM，想叠加一个OSD的overlay之类的字符显示。
网上没查到相关资料，大神能给点思路或例子吗，谢谢
@circlefangzm
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circlefangzm commented Nov 1, 2024 •
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如果只是一个dumb内存，映射到用户空间，网上有很多例子，基本就是把显示的字符串像素化。但是视频解码后的yuv通过prime给到drm，怎么叠加显示字符，不知道怎么弄。RGA那里有个imosd的字幕，不知道方案是否可行，但是没找到怎么用的。

@HermanChen
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用 RGA 来叠加，通用性会好

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@HermanChen @circlefangzm