c6accel and OpenMax

Velan, thanks for the response.

I see that is it possible to create an OMX component that runs on the DSP (e.g. VLPB).  I wonder if you can answer the following two questions.

1. Is it possible to connect two or more OMX components together that use the DSP? For example, COMP1 uses DSP, COMP2 uses DSP and I want to connect output port from COMP1 to input port of COMP2.

2. Is it possible to create an application that has two threads that each use OMX? For example, suppose I have the case above running in one thread and then in a second thread I have another chain of OMX components running.

Steve

Steve,

1. Yes, It is possible to run 2 or more components on DSP. 

2.  As long a it is same application, you can run different threads using OMX components.

Regards

Vimal

Steve Boone said:

Is it not possible to use c6accel and openmax in the same application???

For example, the following code ...

OMX_Init()
CERuntime_init();
char engine[] = "ti8168";
char alg[] = "c6accel";
hC6accel = C6accel_create( engine, NULL, alg, NULL );
if( !hC6accel )
{
    COMMON_DEBUG_OUTPUT( "Error: Could not initialize C6 library." );
    COMMON_THROW_EXCEPTION_NO_LOG_( "Could not initialize C6 library." );
    return false;
}

... generates the following assertions and freezes.

Assertion at Line no: 2661 in /home/user/z3/z3-netra-RPS-20111017/ezsdk/component-sources/syslink_2_00_02_80/packages/ti/syslink/utils/hlos/knl/Linux/../../../../../../ti/syslink/family/hlos/knl/ti81xx/Platform.c: (entry.base == (Ptr) ai.addr [ProcMgr_AddrType_MasterKnlVirt]) : failed
Assertion at Line no: 2665 in /home/user/z3/z3-netra-RPS-20111017/ezsdk/component-sources/syslink_2_00_02_80/packages/ti/syslink/utils/hlos/knl/Linux/../../../../../../ti/syslink/family/hlos/knl/ti81xx/Platform.c: (entry.ownerProcId == handle->slaveSRCfg [i].ownerProcId) : failed

The assertions are generated following the call to C6accel_create.

From this¹ post by Chris Ring, it seems it  should be possible to run codec engine and openmax in single linux app.

Velan or Chris can you clarify, why this is not possible in the current EZSDK ?

What is the issue here? memory map or shared memory configuration?

It is critical to our application need to use codec engine and openmax from the same application in Linux A8, so we can run our custom algorithms on the DSP via codec engine.

We won't be using omx audio encode/decode components that run on DSP.

Thanks

RV

¹"But using Codec Engine (over SysLink) to talk to the DSP while also using OMX (over SysLink) is certainly supported.If it's not working (failure at runtime? ), it's most likely a memory map and/or system config issue".