OMAP35x DVSDK Build v3.00.01.42 Known Issues and Limitations

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This page lists issues and limitations that are known to exist in the OMAP35x DVSDK software for build v3.00.01.42.

Known Issues

1. SDOCM00041241 : SVIDEO: Video quality issue on TV With SVIDEO interface
2. SDOCM00041259 : DVTB: Control-C causes stack-trace to be dumped on to terminal in case of DVTB decode.
3. SDOCM00050734 : While using DVTB application for video playback, video stream display becomes faster at the end of the stream
4. SDOCM00056814 : Video decode demo hangs in stress: Behaviour observed in ES2.1 EVM The video decode demo fails (hangs) in stress after runninng 1055 iterations with error message "Error: Failed to create loader thead" for OMAP EVM 2.1. The same behaviour is not observed in OMPA EVM 3.1(with memory hole configuration) even after running 2850 iterations
5. SDOCM00056890 : Video/Image decode uisng DVTB application fails in stress: Behaviour observed in ES2.1 EVM The DVTB video decode and display fails in stress for OMPA EVM 2.1 after some 1150 itaration. It throws the error message "Thread_create: Cannot allocate memory" and "Segmentation fault". The same behaviour is not observed in OMPA EVM 3.1(with memory hole configuration) even after running 3000 iterations
6. SDOCM00057094 : There are certain errors thrown while booting the EVM 2.1 and 3.1
7. SDOCM00057149 : SDMA performance is not enough to perform framecopies of VGA video @30FPS
8. SDOCM00057184 : OSD flicker observed when switching between decode demo and third party demo menu buttons in main menu screen
9. SDOCM00057794 : Spurious interrupts observed: irq 95: 0xffffffdf, please flush posted write for irq 26
10. SDOCM00051616 : CE examples cause TLB error with default DVSDK demo loadmodules.sh
11. SDOCM00053887 : Specific stream issue: Issue with playing Video (Mpeg2) and Audio (Mp3) together. When streams from the container are extracted and use these as elementary streams with both Decode Demo and DVTB and if video and audio are played out, then the audio thread will not exit in both the cases
12. SDOCM00056334 : Static IP is getting overwritten by DHCP call in initialization script for NFS. This is a known issue. If static IP needs to be used, then the initialization script needs to be modified to comment the dhcp server initiation.
13. SDOCM00057319 : A mild click is heard at the end of the audio playback.
14. SDOCM00055964 : A mild beep is heard at the beginning of audio playback.
15. SDOCM00059851 : Video decode demo:OMAP3530:Demo hangs the target if control-c is pressed, board needs to be reset
16. SDOCM00060833 : Playback of AVI clip with GStreamer gives OOM after 5 minutes.
17. SDOCM00060834 : Ram-disk usage can crash system and result in Out Of Memory (OOM) killers 
18. SDOCM00060835 : System won't boot if mem= kernel option is not specified
19. SDOCM00060903 : System hangs when playing an AVI clip from an SD card using GStreamer.
20. SDOCM00060911 : System won't boot when using proto=tcp option from Migration Guide. This is an issue in case of some setups. The GSG is modified to remove the proto=tcp option and bootargs options page is added to explain this further.
21. SDOCM00061064 : In case of Ubuntu 9.04 host installation, cross-compiling open-source packages that depend on libraries in LINUXLIBS_INSTALL_DIR results in improper linkages. The application links with the host machine's libraries instead of the libraries built for ARM.
22. SDOCM00061385 : OMAP3530: Command line execution of Decode Demo - Info key press on keypad causes system crash when decode demo is executed without the OSD option enabled.

Limitations

1. The maximum sample rate supported by the ALSA Audio driver included in the PSP release is 48KHz.
2. DSP Link kernel object is not re-built in the top level makefile.
3. Maximum of 16M memory can only be provided for double buffering when rotation is enabled.
4. The Audio Capture for Speech encode is not set by default,we can set this value using the amixer utility.Steps for enabling Audio Capture for Speech encode are mentioned in the OMAP35x DVEVM Getting Started Guide
5. The path for audio capture for speech encode is not set by default in the ALSA driver. Use the amixer utility for checking the audio capture. This utility enables the required path in the ALSA driver for audio capture.
6. SDMA performance is not enough to perform framecopies of VGA video @30FPS. There is no burst mode support in the SDMA copy APIs in the SCPY interface provided by framework components

Defects Fixed

1. SDOCM00060865 : Can't re-build dsplink from top-level makefile
2. SDOCM00061137 : Some rules in top level DVSDK makefile results in execution failure. The following rules fail. make clobber; make everything; Errors are observed in Makefile for building dsplink, kernel (no mkImage) and psp_examples
3. SDOCM00061139 : The DVSDK target file system "nfs.tar.gz" contains bogus /dev/* files which do not retain the permissions
4. SDOCM00061140 : Decoded Out of the Box Davinci Effects video has very noticeable field order/interlace style artefacts. This is due to the low quality encoding of the stream and is noticeable when displayed on the external monitor using DVI interface
5. SDOCM00052356 : Stripes visible when running Decode demo - This is observed prominently in DVI. This is because the DVSDK demos use the DMAI framecopy module APIs for performing the buffer copies. The DMAI framecopy module uses the resizer module of the input subsystem. The problem is observed due to a defect in the resizer driver module in PSP while configuring and executing in 1:1 mode.
6. SDOCM00061374 : modules in kernel_binaries directory do not work with shipped kernel image
7. SDOCM00061384 : OMAP3530:GSG should be updated for new components name(various tar files) as well as to incorporate help on new make options
8. SDOCM00061392 : OMAP3530:Documentation:How_do_I_Integrate_new_codecs:Mp3:Steps to integrate mp3 codec need more clarity and details
9. SDOCM00061137 : relnotes contain internal URL links

See Also

• OMAP35x_DVSDK_Build_v3.00.00.40_Known_Issues_and_Limitations
• OMAP35x_DVSDK_Build_v3.00.02.44_Known_Issues_and_Limitations
• OMAP35x_DVSDK_Beta2_to_GA_Migration_Guide