[MPlayer-dev-eng] Need a guide to implement a codec library using hardware video codec

[Shachar Raindel]

Small GPL warning:

Make sure that your company is aware to the fact that MPlayer is
licensed only through a GPL license.

IANAL, so I am not sure what exactly is needed for you to comply with
said license, though I am rather sure that releasing all of the source
code of your modified version of MPlayer is part of this. Take that
into account while working on this project - the MPlayer/ffmpeg gang
is well known for chasing GPL violators.

--Shachar

On Tue, Apr 15, 2008 at 3:50 AM, Lee Kwangwoo <kwlee at mtekvision.com> wrote:
> > -----Original Message-----
>  > From: mplayer-dev-eng-bounces at mplayerhq.hu [mailto:mplayer-dev-eng-
>  > bounces at mplayerhq.hu] On Behalf Of Compn
>  > Sent: Monday, April 14, 2008 9:17 PM
>  > To: mplayer-dev-eng at mplayerhq.hu
>  > Subject: Re: [MPlayer-dev-eng] Need a guide to implement a codec
>  library
>  > using hardware video codec
>  >
>  > On Mon, 14 Apr 2008 14:04:38 +0900, Lee Kwangwoo wrote:
>  > >Hello,
>  > >
>  > >I'm porting the mplayer with a hardware video codec in a SoC.
>  >
>  > which project is this for?
>
>  This project is for my company, which makes ARM based mobile processor
>  including hardware video codec.
>
>
>  > >It is capable of decoding H.264 and MPEG4. It can also encode frame
>  > >with such formats.
>  > >
>  > >In the libmpcodecs/vd.c you explicitly note a comment - "do not add
>  any
>  > >new decoders here" for mpcodes_vd_drivers[]. So if I use the
>  > >libavcodec/h264.c, should I replace that file with my own decoder
>  file
>  > >or add feature to support a hardware decoder with a define macro?
>  >
>  > this just means that any new codecs should go into libavcodec from
>  > ffmpeg. if you are porting mplayer to a new hardware device, you can
>  > ignore this warning.
>
>  Thank you for your guide.
>
>
>  > >I think that I need to replace the functions, for example -
>  > >decode_nal_units(), because the hardware decoder requires one frame
>  > >starting with nal header and output a decoded YUV420 frame.
>  > >
>  > >Any comments and guide will be very helpful.
>  > >Thank you,
>  > >
>  > >Kwangwoo Lee
>  >
>  > good luck
>  >
>  > -compn
>
>  Thank you.
>
>  Kwangwoo Lee
>
>
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