Dear codec experts,
I am desperately trying to get the TestAppEncoder DSP only project to run on the DSP on the L138 Experimentor kit. This project is located in the DVDSK download at C:\ti-dvsdk_omapl138-evm_4_02_00_06\codecs-omapl138_4_02_00_00\packages\ti\sdo\codecs\h264enc\app\Client\Build and is a CCS3v3 project. In the associated documentation (H264_encoder_DM6446_UserGuide.pdf) the following is required:
- cgt 6.1.2
- dspbios 5.31.02
- fc 2.20.00.15
This is indeed what is in the project file.
However - the DVDSK comes with
- cgt6x_6_1_14 (for linux)
- dspbios 5.41.03.17
- fc 2.26.00.01
and is able to compile the linux based codec engine. So I assume that the H264 encoder h264venc_ti.l64P has no compatibility issues with these.
I then had to make a CCS4.2.4.00033 project from the CCS3.3 project as I need to work in this environment. I installed cgt 6.1.14 for windows and pointed CCS4.2.4 to use this as well as the dspbios and fc on the DVDSK. The application TestAppEncoder was able to compile with no errors once I changed the H264VEncApp.cmd file to match the L138:
MEMORY{
L1DRAM : o = 0x00f00000, l = 0x00010000
ERAM : o = 0xC0000000, l = 0x08000000
}
On debugging - all ran well until line 308:
/* Provide the Algorithm handle to DMAN3 Interface for granting channels */
handleArray[0] = (IALG_Handle) handle;
dmaFxns[0] = &H264VENC_TI_IDMA3;
if ((retval=DMAN3_grantDmaChannels(groupId, handleArray, dmaFxns, numAlgs))
!= DMAN3_SOK)
{
printf("\nProblem adding algorithm's dma resources");
printf("... Exiting for this configuration... \n");
continue;
}
where a DMAN3_EFAIL: Failed to initialize handle, or dmaFxns dmaInit() failed. returned. As DMAN3 is also black box - I dont know why this occurs.
On closer inspection, I see that H264VENC_TI_IDMA3 is located at 0x00007798 which is an illegal address. Problem is - this variable is declared extern in h264vebc_ti.h and I suspect it is inside h264venc_ti.l64P. Maybe it is this?
But the question is - how does this very same h264venc_ti.l64P work in the codec engine on the same device? Please advise what could be wrong as I need the H264 encoder/decoder to link into a DSP/BIOS program on the DSP side of the L138.
Regards
Ian
