Failed to allocate buffer while playing mp4 file

[Bruce Tsai]

I tested the same app on my recently bought new Nexus 7 (2013).
The media_codecs.xml of Nexus 7 is listed in [1].
The screen is blank rather than weird video frames while playing content.
And the errors, see logs in [2], are a little different from Note 2.
There are no errors like
"gstamcvideodec.c:1053:gst_amc_video_dec_loop:<amcvideodec-omxsecavcdec0>
Failed to allocate buffer".
But "gstamc.c:701:gst_amc_codec_dequeue_output_buffer Failed to call Java
method" still exists.

For the unknown color formats, I found that some codecs have color format
(0x7fa30c03) that is not mentioned in Android Java API [3].
But I do find this number is defined as
"COLOR_QCOM_FormatYUV420PackedSemiPlanar64x32Tile2m8ka" in
gst-plugins-bad-static-0.10.23/sys/androidmedia/gstamc-constants.h.
This is weird to consider a known color format as an unknown color format
while scanning codec information.

[1]
https://dl.dropboxusercontent.com/u/72809300/GoogleNexus7/media_codecs.xml
[2]
https://dl.dropboxusercontent.com/u/72809300/GoogleNexus7/log_no_mp4_video.txt
[3]
http://developer.android.com/reference/android/media/MediaCodecInfo.CodecCapabilities.html#COLOR_FormatSurface

Yi-Lung (Bruce) Tsai



> Message: 2
> Date: Fri, 30 Aug 2013 09:54:40 +0200
> From: Sebastian Dr?ge <slomo at circular-chaos.org>
> To: Discussions about GStreamer on Android
>         <gstreamer-android at lists.freedesktop.org>
> Subject: Re: Failed to allocate buffer while playing mp4 file
> Message-ID: <1377849280.4321.8.camel at thor.lan>
> Content-Type: text/plain; charset="utf-8"
>
> On Do, 2013-08-29 at 16:40 +0800, Bruce Tsai wrote:
> > Hi Sebastian,
> >
> >
> > The media_codecs.xml is
> > put https://www.dropbox.com/s/02m5g8gms9t798k/media_codecs.xml
> > And the video frame is look
> > like
> https://dl.dropboxusercontent.com/u/72809300/SamsungNote2/2013-08-29%2016.16.32.jpg
> >
> >
> > The ogv file, also download from sintel, is playable on Note 2.
>
> That one doesn't use the hardware codecs though :)
>
>
> Not sure what else I could do here without actual access to the device.
> You would need to check why exactly it fails to call the Java method,
> and also debug why the color format that is used by the decoder does not
> match what we assume in the androidmedia plugin... and try to reverse
> engineer how it is supposed to be used.
>
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