April 2008 - MPlayer-dev-eng - lists.mplayerhq.hu

Re: [MPlayer-dev-eng] Need a guide to implement a codeclibrary using hardware video codec
by Lee Kwangwoo 22 Apr '08

22 Apr '08

> On Monday, April 21, 2008 10:03 PM, Reimar Döffinger wrote: > > On Mon, Apr 21, 2008 at 12:26:23PM +0200, Nico Sabbi wrote: > > On Monday 21 April 2008 12:08:22 Lee Kwangwoo wrote: > > > The modified code of the mplayer will be released under the GPL. > > > But I have one question about codec library. If I write a library > > > for a hardware device which can be used to control the hardware > > > device commonly and which can also be used with mplayer, is it > > > released under the GPL license? > > > > this is up to the author, but read below > > > > > In my situation, I can not open the control code of the hardware > > > device. If I must release the hardware codec library under the GPL > > > license, I should rethink using mplayer code. Should I implement > > > whole things? well.. get permission from my boss??? > > > > the point is that if your library isn't gpl-compatible you can't > > distribute mplayer (that is gpl) with it > > Well, if you dlopen your library, have a rather generic API for the > library (maybe even a gpl'd variant of the library that provides > the same features just e.g. via software emulation) and distribute > MPlayer and that non-GPL library separately there is a good chance > there is no problem (and there is no problem at all if you do not > distribute), but for definitive answers you will have to ask a lawyer, > sorry. > > Greetings, > Reimar Döffinger I'll talk with my boss for the right solution. Thank you for your good information. Regards, Kwangwoo Lee

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Re: [MPlayer-dev-eng] Need a guide to implement a codec libraryusing hardware video codec
by Lee Kwangwoo 22 Apr '08

22 Apr '08

> On Monday, April 21, 2008 7:26 PM, Nico Sabbi wrote: > > On Monday 21 April 2008 12:08:22 Lee Kwangwoo wrote: > > The modified code of the mplayer will be released under the GPL. > > But I have one question about codec library. If I write a library > > for a hardware device which can be used to control the hardware > > device commonly and which can also be used with mplayer, is it > > released under the GPL license? > > this is up to the author, but read below > > > > > In my situation, I can not open the control code of the hardware > > device. If I must release the hardware codec library under the GPL > > license, I should rethink using mplayer code. Should I implement > > whole things? well.. get permission from my boss??? > > the point is that if your library isn't gpl-compatible you can't > distribute mplayer (that is gpl) with it > > > > > Let me know the right solution about this situation, please. > > Thank you. > > easy: write your library as gpl > > > > > Kwangwoo Lee > > please, use only interleaved posting here > I need to talk with my boss. Thank you for your comment. Kwangwoo Lee

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[PATCH] Null pointer reference in win32 loader
by Gianluigi Tiesi 21 Apr '08

21 Apr '08

My vfw patch seems to going to not be merged perhaps it spotted a null pointer reference in: expSetFilePointer that may be fixed anyway http://oss.netfarm.it/mplayer/patches/xx_vp6vfw_2pass_linux.diff (yes I'm lazy to attach the patch) pick the last hunk only Regards -- Gianluigi Tiesi <sherpya(a)netfarm.it> EDP Project Leader Netfarm S.r.l. - http://www.netfarm.it/ Free Software: http://oss.netfarm.it/

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Re: [MPlayer-dev-eng] Need a guide to implement a codec library using hardware video codec
by Lee Kwangwoo 21 Apr '08

21 Apr '08

The modified code of the mplayer will be released under the GPL. But I have one question about codec library. If I write a library for a hardware device which can be used to control the hardware device commonly and which can also be used with mplayer, is it released under the GPL license? In my situation, I can not open the control code of the hardware device. If I must release the hardware codec library under the GPL license, I should rethink using mplayer code. Should I implement whole things? well.. get permission from my boss??? Let me know the right solution about this situation, please. Thank you. Kwangwoo Lee On Monday, April 21, 2008 9:25 AM, Raindel <shacharr(a)gmail.com> Wrote: > 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(a)mtekvision.com> > wrote: > > > -----Original Message----- > > > From: mplayer-dev-eng-bounces(a)mplayerhq.hu [mailto:mplayer-dev-eng- > > > bounces(a)mplayerhq.hu] On Behalf Of Compn > > > Sent: Monday, April 14, 2008 9:17 PM > > > To: mplayer-dev-eng(a)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 > > > > > > _______________________________________________ > > MPlayer-dev-eng mailing list > > MPlayer-dev-eng(a)mplayerhq.hu > > https://lists.mplayerhq.hu/mailman/listinfo/mplayer-dev-eng > > >

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Re: [MPlayer-dev-eng] Need a guide to implement a codec library using hardware video codec
by Lee Kwangwoo 21 Apr '08

21 Apr '08

> -----Original Message----- > From: mplayer-dev-eng-bounces(a)mplayerhq.hu [mailto:mplayer-dev-eng- > bounces(a)mplayerhq.hu] On Behalf Of Compn > Sent: Monday, April 14, 2008 9:17 PM > To: mplayer-dev-eng(a)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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[PATCH] MSU Codec and vd_vfw change fixing seg fault
by AsSlowAsHell 20 Apr '08

20 Apr '08

-Added info in codecs.conf to support MSU Screen Capture Lossless Codec -Changed the call to ICDecompress video for windows API to pass output buffer even if frame drop is true. Certain codecs like MSU seem to write to the output buffer even if told to frame skip and this was causing a memory write to 0x00000000.

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Example of codecs.conf w/o DLL files.
by Robert Bradbury 20 Apr '08

20 Apr '08

I am building mplayer with --disable-win32dll (due to the segfault problems decoding a PVR-150 (mpeg) sound stream which appears to be due to a problem mapping and unmapping the DLL codecs normally used). Does anyone have an example of a minimal codecs.conf file without *ANY* DLL codecs (i.e. I want to use only standard Linux sound libraries). Alternatively, does anyone know of any documentation on how to write a codecs.conf file with only the most basic codecs? Alternatively, I might be willing to settle for a codecs.conf with DLL video codecs but no DLL audio codecs. Thank you, Robert Bradbury

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new codec Canopus LossLess
by Gianluigi Tiesi 20 Apr '08

20 Apr '08

codecs.conf entry dlls and infos in the ftp, incoming/Canopus_LossLess on win32 enc/dec are working samples can be made with mencoder Regards -- Gianluigi Tiesi <sherpya(a)netfarm.it> EDP Project Leader Netfarm S.r.l. - http://www.netfarm.it/ Free Software: http://oss.netfarm.it/

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canopus hq vfw codec
by Gianluigi Tiesi 19 Apr '08

19 Apr '08

Hi, samples at: http://samples.mplayerhq.hu/V-codecs/CUVC/ This entry makes vfw driver working at least decoding: videocodec canopushq status working info "Canopus HQ Codec" comment "http://www.canopus.com/canopus/technology/canopuscodecs.php" fourcc CUVC driver vfw dll "CUVCcodc.dll" out BGR24 this site: http://codec.kiev.ua/ when it works has also the new version that includes a dshow filter, the entry is: videocodec canopushqds status buggy info "Canopus HQ Codec" comment "http://www.canopus.com/canopus/technology/canopuscodecs.php" fourcc CUVC driver dshow dll "csdshowcodc.dll" guid 0xf8c71073, 0x10db, 0x4dff, 0x8e, 0xa6, 0xce, 0xa2, 0x64, 0x00, 0xaf, 0xfb out RGB32 But it doesn't work for me: Warning: DS_Filter() could not connect to output pin. (DLL=csdshowcodc.dll) canopus2.avi looks broken, canopushq.avi is ok (sorry for some long lines) Regards -- Gianluigi Tiesi <sherpya(a)netfarm.it> EDP Project Leader Netfarm S.r.l. - http://www.netfarm.it/ Free Software: http://oss.netfarm.it/

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Directory for unapplied patches?
by Nico Sabbi 19 Apr '08

19 Apr '08

What about adding to main/ a directory for patches that for some reason were not applied to the code base? Users could apply them manually for specific uses

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