[RFC] Support for 'Coda' video codec IP.

[javier.martin@vista-silicon.com (javier Martin)]

On 2 July 2012 12:54, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> On Mon, Jul 02, 2012 at 12:36:46PM +0200, javier Martin wrote:
>> Hi Sascha,
>> I almost have a final version ready which includes multi-instance
>> support (not tested though) [1]. As I stated, we assumed the extra
>> effort of looking at your code in [2] in order to provide a mechanism
>> that preserves compatibility between VPUs in i.MX21, i.MX51 and
>> i.MX53. This is the only thing left in order to send the driver for
>> mainline submission.
>>
>> While I was reading your code I found out that you keep the following
>> formats for v1 (codadx6-i.MX27) codec:
>>
>> static int vpu_v1_codecs[VPU_CODEC_MAX] = {
>>       [VPU_CODEC_AVC_DEC] = 2,
>>       [VPU_CODEC_VC1_DEC] = -1,
>>       [VPU_CODEC_MP2_DEC] = -1,
>>       [VPU_CODEC_DV3_DEC] = -1,
>>       [VPU_CODEC_RV_DEC] = -1,
>>       [VPU_CODEC_MJPG_DEC] = 0x82,
>>       [VPU_CODEC_AVC_ENC] = 3,
>>       [VPU_CODEC_MP4_ENC] = 1,
>>       [VPU_CODEC_MJPG_ENC] = 0x83,
>> };
>>
>> As I understand, this means the following operations are supported:
>>
>> 1- H264 decoding.
>> 2- H264 encoding
>> 3- MP4 encoding.
>> 4- MJPG  decoding.
>> 5- MJPG encoding.
>>
>> I totally agree with MP4 and H264 formats but, are you sure about
>> MJPG? I have a i.MX27 v1 codec (codadx6) but I didn't know that this
>> codec supported MJPG. Have you tested this code with an i.MX27 and
>> MJPG? Where did you find out that it supports this format?
>
> We haven't tested MJPG on the i.MX27. The table above is from the
> original Freescale code, so I assume it's correct and I assume that
> the coda dx6 can do MJPEG.

Fabio, could you confirm that the VPU in the i.MX27 supports MJPG too?

>> Are you
>> using firmware version 2.2.4 for v1 codecs?
>
> No, 2.2.5

Where did you get that firmware version? The only related download I
can find in [1] is
'MX273DS_FULL_VPU_SW_AND_VPU_FIRMWARE_2.2.4_WINCE_TO2.X_ONLY' which
includes firmware 2.2.4.

[1] http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX27&nodeId=018rH3ZrDR66AF&fpsp=1&tab=Design_Tools_Tab

-- 
Javier Martin
Vista Silicon S.L.
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