questions about extension OMX.google.android.index.enableAndroidNativeBuffers in ACodec.cpp

[Mike Zhou]

Hi:

    I am trying to implement the extension OMX.google.android.index.enableAndroidNativeBuffers in my hardware openmax decoder,

    I got confused when I read the explanation on EnableAndroidNativeBuffersParams.

// When Android native buffer use has been enabled for a given port, the video

// color format for the port is to be interpreted as an Android pixel format

// rather than an OMX color format.  Enabling Android native buffers may also

// change how the component receives the native buffers.  If store-metadata-mode

// is enabled on the port, the component will receive the buffers as specified

// in the section below. Otherwise, unless the node supports the

// 'OMX.google.android.index.useAndroidNativeBuffer2' extension, it should

// expect to receive UseAndroidNativeBuffer calls (via OMX_SetParameter) rather

// than UseBuffer calls for that port.

struct EnableAndroidNativeBuffersParams {

    OMX_U32 nSize;

    OMX_VERSIONTYPE nVersion;

    OMX_U32 nPortIndex;

    OMX_BOOL enable;

};

    Does it means that color format got from OMX_IndexParamPortDefinition is pixel format after enableGraphicBuffers called ?

    I changed the color format to pixel format 0x101 in my decoder component.

    However, it will call getParameter(OMX_IndexParamPortDefinition) later when component change to idle state from loaded state, and the color format got should be openmax color format such as OMX_COLOR_FormatYUV420Planar.

    It seems conflict with privious explanation.

    could you tell me which value should my decoder component return?

    Look forward to your reply.

    Thanks.

Best Regards,

Mike,