topic Re: Regarding VPU Decoder in Other NXP Products

Regarding VPU Decoder

admin — Mon, 05 Jan 2009 14:35:11 GMT

Hi ,

I am trying to integrate the ffmpeg with VPU codec . I am able to play some H264 files now
When I try to play *.mp4 file I am getting the Error like below ..

vpu_DecGetOutputInfo failed. Error code is -1 .

Problem is once I got this error I am not able to play any files until I restart the board .

Could you suggest the exact reason for the cause. I am using the same method of bluewind.it..

Expecting an early reply..

Thanks
Nimesh Kanoth

Re: Regarding VPU Decoder

jetic — Mon, 05 Jan 2009 23:44:14 GMT

Not sure which platform Linux/WinCE and BSP(i.MX27?) you are using.
Normally it should return like that.
Please check:
1. At initInfo, is the video bitstream header correctly parsed by VPU?
2. Which mode file or stream mode are using by you? For file mode, it should always input
one frame data, in stream mode, it should input at least one frame date.
3. You can try with unit-test code released with ltib package first if using Linux BSP.

Hope will do some help to you

B.R
Jetic

Re: Regarding VPU Decoder

admin — Tue, 06 Jan 2009 12:30:05 GMT

Hi Jectic ,

Thanks for your immediate reply..

I am trying this on the iMX27 ADS - Linux . We need to play both audio and video. The example given by the freescale doesn't contain the audio support . And the Gstreamer is too heavy for our requirement . So we are trying to use the VPU and ffmpeg with emma support to play movie files.

Now I am trying with file play only ... Currently I am able to some H264 files... but when I try to play MP4 I am getting the vpu_DecGetOutputInfo failed . when I dig in the vpu lib code failure is exactly from

if ((VpuReadReg(RET_DEC_PIC_SUCCESS) & 0x01) == 0) {
                printf("VpuReadReg--->%d\n",ret);
                pendingInst = 0;
                return RETCODE_FAILURE;
}

I attached the files I using with ffmpeg ...
1) h263_dec.c
2) vpu_codec.c

There is no changes in the VPU library .. I am using the latest one ...

Thanks
Nimesh Kanoth