If you want to write an application that utilises the JPEG encoder, for example, you will first want to know whether you only need to write a simple application that links to the JPEG encoder library or whether you need to incorporate some auxiliary libraries from the DVSDK. It is a big improvement on the severely broken equivalent in the JPEG encoder test application, but it is itself broken too. Although the DVSDK purports to be cross-platform, and does have some conditional compilation to cater for WinCE and non-Linux environments, there are various faults that make it unusable for non-Linux builds without some modification at least in version 4. As delivered, the sample code just polls a flag which is set by the ISR — you can improve this by making the ISR post a semaphore or similar, so that the codec library can block on the interrupt occurring rather than poll continuously. However if you want to build a non-Linux product to use your existing RTOS for example you will find little guidance on where to start. 
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DVSDK - Texas Instruments Wiki
You will, however, find that the existing DVSDK code for non-Linux environments needs some modification before it will compile, and suffers from various runtime faults. My experience dvvsdk that some of the DVSDK is indeed very useful and it is not necessary to rewrite portions of it from scratch.
Bookmark and Share This Article. I started my porting effort by writing a simple JPEG encoder application, and found that there was a JPEG encoder test application that looked like it might prove useful jpegencTestApp. This dvdsk can be set to TRUE in your.
Using DaVinci DM365 Codecs Without Linux
TI do not publish the sources to the codec libraries, and do not provide a version of the codec libraries compiled with short vdsdk support, so you need to modify your own application build to match the codec library or provide a shim layer. You can simplify the task by building only the libraries that are required for the particular codec application you are building.
However in the absence of any alternative I persevered with the test application. Feel free to contact me for a patch, but here are a few examples of issues in this release: However if you want dvwdk build a non-Linux product to use your existing RTOS for example you will find little guidance on where to start.
You will find that some variables and functions which you need to link are not present in DVSDK components at all. Messages on the TI forums suggested that it was no longer buildable and not a good starting point and it did look a little Linux-centric the Makefile defines -DLINUX and cm365 were some mentions of the linuxtools tree.
Faced with a huge amount of source code and frameworks within the software development kit DVSDKit is difficult to figure out where to begin. Although the DVSDK purports to be cross-platform, and does have some conditional compilation to cater for WinCE and non-Linux environments, there are various faults that make it unusable for non-Linux builds without some modification at least in version 4.
This can be invoked as follows: If you want to write an application that utilises the JPEG encoder, for example, you will first want to know whether you only need to write a simple application that links to the JPEG encoder library or whether you need to incorporate some auxiliary libraries from the DVSDK.
Please feel free to get in touch if you have any questions or would like to discuss anything further. It quickly became clear that the test application and the binary JPEG encoder library are not sufficient to create an application — they require some auxiliary libraries from the DVSDK.
Feel free to contact me for a patch, but here are a few examples of issues in this release:.
A simple issue to fix is that the allocations need to be zeroed on allocation it turns out that the DVSDK components expect these allocations to be zeroed for them. The superset framework is the Codec Engine that provides a common interface across the codecs, but it does appear d365 be rather Linux-centric and porting the entire framework would be a not insignificant task.
Your email address will not be published. You may also prefer to utilise the entire Codec Framework, but I felt that using the absolute minimum required subset of modules reduced the complexity of the entire port.
Leave a Reply Cancel reply Your email address will not be published. The myMemAlign call has the parameters swapped, suggesting that perhaps this code was in service some time ago but when changes vdsdk made for Linux they were xvsdk reflected into the non-Linux code.
It is a big dvddk on the severely broken equivalent in the JPEG encoder test application, but it is itself broken too. You will generally find that the non-Linux code is buggy, however, without applying fixes available from me as a patch file.
If the full Codec Engine is not strictly required by your application, then you may find that you can make better progress by reducing the components to the minimal set required for using the particular codec. If there are multiple files in a framework component e.
Category:DM - Texas Instruments Wiki
D,365 additional GCC flags I use when compiling the DVSDK are as follows these were the only additional flags required over and above those I normally use to build the rest of my sources: This would have avoided the build and runtime faults that exist in the DVSDK for non-Linux builds, but at the cost of increasing complexity in terms of the porting layer. There are other ways to approach bringing up the codecs in non-Linux environments.
If your own GCC build makes enums as short as possible rather than forcing them up to bits, ddvsdk the layout of the structures which the DVSDK passes in and out dvsdl the binary codec libraries will not match. Some of the OS abstraction components only need stubs, such as LockMP which is used for multi-process environments rather than the typical lightweight threading model used in an RTOS.
Sometimes the best way to establish the minimal subset of required components for your application is to simply attempt to link to the codec library and resolve the dependencies one by one.
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