[vlc-devel] [PATCH 2/5] mediacodec: add hevc mimetype
Thomas Guillem
tom at gllm.fr
Tue Oct 7 23:27:22 CEST 2014
I sent the last VLC apk to someone with a rk32 tablet. He reported me
that MediaCodec was working fine and was able to decode hevc.
It's weird it doesn't work for you but I guess it depend on the fw that
is still in development, no ?
You can try with iomx, it can work too.
Can you send me the full logcat when you try hevc ? (there are some
omx/stagefright debug that can be useful)
On Tue, Oct 7, 2014, at 23:13, John Stebbins wrote:
> So, mediacodec fails silently because msg_Warn will not output anything
> until the current exception is cleared. Moving
> the msg after clearing the exception allows me to see the error. It is
> failing during mediacodec::configure. I
> mentioned this in my first email. I get the same mediacodec configure
> failure on xbmc. Using libstagefright on xbmc works.
>
> This is why I wanted to try the lower level omx implementation. Because
> mediacodec on my platform appears to be borked
> for hevc.
>
> From my first message:
>
> I tested such a patch on my Measy B4S and mediacodec fails during
> configure. I did some further research, downloaded android SDK sources
> for another similar (rk3288) box and looked for
> problems. Turns out mediacodec is missing support in other places for
> hevc. Specifically, there is a hard coded list
> of "roles" in one of the functions that doesn't include an hevc decoder
> role. I see that you have fixed a similar issue
> in VLCs OMX implementation.
>
> On 10/07/2014 01:50 PM, John Stebbins wrote:
> > Here's a log of hevc playback with no local modifications to vlc. So just your omx updates. Mediacodec seems to decide
> > on a decoder and then silently gives up and falls back to using avcodec.
> >
> > On 10/07/2014 10:16 AM, Thomas Guillem wrote:
> >> Missing iomx is only a warning. It's normal after Android 4.3 since we
> >> prefer to use MediaCodec.
> >> You should give me the logs of MediaCodec failing, not iomx.
> >>
> >> On Tue, Oct 7, 2014 at 6:55 PM, John Stebbins <stebbins at jetheaddev.com> wrote:
> >>> Ok, I discovered that libiomx-kk was disabled in the Makefile. So enabling this gets me past the issue of missing
> >>> libiomx. It now finds the omx decoder, but fails during setup. Log leading to error:
> >>>
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: component standard role set to video_decoder.hevc
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: HwBuffer_Init
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: direct output port enabled
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: OMX_SetParameter failed (80001001 : OMX_ErrorUndefined)
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: HwBuffer_Stop
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: HwBuffer_Stop
> >>> 10-07 16:43:59.048 D/VLC ( 5315): iomx decoder: HwBuffer_FreeBuffers
> >>> 10-07 16:43:59.058 D/VLC ( 5315): iomx decoder: no component could be initialised
> >>>
> >>> After the error, it falls back to avcodec. I'll add some more logging to narrow down exactly where this is happening later.
> >>>
> >>> On 10/06/2014 05:56 PM, John Stebbins wrote:
> >>>> So, it doesn't work on rk3288 out of the box. And even after some ugly hacks, I'm getting video with green lines
> >>>> through it and the image repeated 5 times and squished horizontally. Not sure what that's all about.
> >>>>
> >>>> Attaching diff to show ugly hacks and logs just in case you have some ideas what the distorted video might be.
> >>>>
> >>>> To summarize the hacks, I had to remove the USE_IOMX define because my box does not have libiomx.so. Then, my box does
> >>>> have libOMX_Core.so. but all the symbols are prefixed with "RK". So I had to modify the dlsym calls. The rest is just
> >>>> debug messages so I can see what's happening.
> >>>>
> >>>> On 10/03/2014 10:39 AM, Thomas Guillem wrote:
> >>>>> Ah yes, I'm curious to know if my patches work on rk32.
> >>>>>
> >>>>> On Fri, Oct 3, 2014 at 7:29 PM, John Stebbins <stebbins at jetheaddev.com> wrote:
> >>>>>> Ok. I'll test to see if your OMX changes work on my box. I think they should since I was able to make stagefright
> >>>>>> playback in xbmc work. The Measy is built on the rk3288 SoC. There are a lot of very cheap (< $100) android players
> >>>>>> based on this SoC becoming available now.
> >>>>>>
> >>>>>> On 10/03/2014 10:05 AM, Thomas Guillem wrote:
> >>>>>>> I tested it only on a Nvidia Shield tablet (Tegra K1). It run fine
> >>>>>>> (with the others patches).
> >>>>>>>
> >>>>>>> VLC use the MediaCodec API from JAVA, it's the public API from
> >>>>>>> android-sdk that don't change for one manufacturer.
> >>>>>>> But all manufacturers can modify the private native API
> >>>>>>> (MediaCodec.cpp and co), so that where they add support for extra
> >>>>>>> codecs..
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> On Fri, Oct 3, 2014 at 6:47 PM, John Stebbins <stebbins at jetheaddev.com> wrote:
> >>>>>>>> Hi,
> >>>>>>>>
> >>>>>>>> Do you have an android box that this works on? I tested such a patch on my Measy B4S and mediacodec fails during
> >>>>>>>> configure. I did some further research, downloaded android SDK sources for another similar box and looked for
> >>>>>>>> problems. Turns out mediacodec is missing support in other places for hevc. Specifically, there is a hard coded list
> >>>>>>>> of "roles" in one of the functions that doesn't include an hevc decoder role. I see that you have fixed a similar issue
> >>>>>>>> in VLCs OMX implementation.
> >>>>>>>>
> >>>>>>>> I've seen reports that some manufacturers have made hevc mediacodec decode working, so I think some are distributing
> >>>>>>>> with modified SDK. Do you have one of these, if so which?
> >>>>>>>>
> >>>>>>>> --
> >>>>>>>> John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2 60D4 D0F7
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> _______________________________________________
> >>>>>>>> vlc-devel mailing list
> >>>>>>>> To unsubscribe or modify your subscription options:
> >>>>>>>> https://mailman.videolan.org/listinfo/vlc-devel
> >>>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> vlc-devel mailing list
> >>>>>>> To unsubscribe or modify your subscription options:
> >>>>>>> https://mailman.videolan.org/listinfo/vlc-devel
> >>>>>> --
> >>>>>> John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2 60D4 D0F7
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> vlc-devel mailing list
> >>>>>> To unsubscribe or modify your subscription options:
> >>>>>> https://mailman.videolan.org/listinfo/vlc-devel
> >>>>>>
> >>>>> _______________________________________________
> >>>>> vlc-devel mailing list
> >>>>> To unsubscribe or modify your subscription options:
> >>>>> https://mailman.videolan.org/listinfo/vlc-devel
> >>> --
> >>> John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2 60D4 D0F7
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> vlc-devel mailing list
> >>> To unsubscribe or modify your subscription options:
> >>> https://mailman.videolan.org/listinfo/vlc-devel
> >>>
> >> _______________________________________________
> >> vlc-devel mailing list
> >> To unsubscribe or modify your subscription options:
> >> https://mailman.videolan.org/listinfo/vlc-devel
>
> --
> John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2
> 60D4 D0F7
>
>
> _______________________________________________
> vlc-devel mailing list
> To unsubscribe or modify your subscription options:
> https://mailman.videolan.org/listinfo/vlc-devel
> Email had 1 attachment:
> + signature.asc
> 1k (application/pgp-signature)
More information about the vlc-devel
mailing list