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Can we get Source code for DM648 the codec is dm648_h264avc_e_1_14_003_production.

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Laurie Verboort
Posted by
on Mar 29 2012 17:47 PM
Prodigy190 points
Video input from Camera.  Using DM648 and run H.264 Compression with outputs to NTSC and EThernet.
 
Can we get Source code for DM648.  The processor is the DM648, the codec is dm648_h264avc_e_1_14_003_production.

We are currently evaluating the codec--trying to integrate it with our video capture and other processing, and verify its performance in the context of our usage.

I have gotten through a variety of problems making the DMA engine internal to the codec play nicely with the EDMA3 driver used for video and scratch DMA in our application, and am currently stuck on an exception generated by the codec on the second pass of "encode":

In the function H264VENC_TI_h264e_imcop_init it is writing to a non-existent memory location. Specifically:

STH.D2T1 A6,*B4[0], when B4 contains the value 0x8065B, which is "reserved" in the DM648 memory map.

Trying to get this thing to work has been very painful when all I have to go by is the assembly for the codec, so I could really use a resource that knows the "C" for the codec to help me divine what the problem(s) could be.

 
Two issues seen...
1_ exception on 2nd call to “encode” that I had to mask and hang after some number of calls to it) are not related to these versions, especially the exception from bad pointer that I masked.
2_ though 4:2:2 input is an enum in the .h file, it is not supported on the DM648 version of the codec, and causes an init failure,
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