[Arm-netbook] Allwinner A10/A13 Video Decoder Reverse engineered

Ken Phillis Jr kphillisjr at gmail.com
Thu Sep 5 18:50:57 BST 2013


On Thu, Sep 5, 2013 at 8:38 AM, Michal Lazo <michal.lazo at mdragon.org> wrote:

> Than show me api for this
> I am not aware that opengl/egl api have something like this
> Latest Mali EGL drivers add support for DMABUF, older drivers support mali
> UMP but mali don't provide opensource api for this.
>
>
>
>
EGL/OpenGL api do not directly support this... Instead the OpenMAX
specification itself states how to handle the interaction between Egl,
OpenGL ES, and OpenVG.

Document: OpenMAX IL 1.1.2 Specification
Download Location: http://www.khronos.org/registry/omxil/
Section 3.2: OpenMAX IL Core Methods/Macros ( Page 78 to 111 )
Subsection 3.2.2.19 OMX_UseEGLImage ( Page 102 to 104 )
This section itself is the critical section to look at.

Section 3.3: OpenMAX IL Component Methods and Structures ( Page 111 to 118 )
subsection 3.3.19 UseEGLImage ( Page 118 )
Not a lot is said, Just provides a definition for UseEGLImageBuffer and
redirects to the previously mentioned section.
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