OMAP35x DVSDK Build v3.00.00.40 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 v3.00.00.40.

NOTE

1. Some of the codec version numbers as listed in the OMAP35x DVSDK build 3.00.00.40 release notes are incorrect. To get the correct codec version numbers, please refer to the OMAP35x DVSDK Version Log
2. The Release Notes in this release contains TI internal links to the Getting Started Guide as well as the Beta 2 to GA Migration Guide.This will not work when accessed from the non-TI network. Kindly refer to the OMAP3530 DVSDK download page for the correct external links

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. 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.
12. 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
13. 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.
14. SDOCM00057319 : A mild click is heard at the end of the audio playback.
15. SDOCM00055964 : A mild beep is heard at the beginning of audio playback.
16. SDOCM00059851 : Video decode demo:OMAP3530:Demo hangs the target if control-c is pressed, board needs to be reset
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. 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.
20. 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
21. SDOCM00061139 : The DVSDK target file system "nfs.tar.gz" contains bogus /dev/* files which do not retain the permissions
22. 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

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 mentioned in 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. SDOCM00057787 : Video playback performance for standard definition resolution is 29 frames per second for most of the duration of video playback using resizer
2. SDOCM00041411 : The decode demo hangs after 48 hours of playback of video. The system stops responding and required a hard re-boot.

See Also

• OMAP35x_DVSDK_Build_v3.00.01.42_Known_Issues_and_Limitations
• OMAP35x_DVSDK_Build_v3.00.02.44_Known_Issues_and_Limitations
• OMAP35x_DVSDK_Beta2_to_GA_Migration_Guide