[FFmpeg-user] AAC decoding on Android

[Hans-Christoph Steiner]

We have AAC working on Android using ffmpeg's built-in AAC support.
Here's our project for building ffmpeg for Android:

https://github.com/guardianproject/android-ffmpeg

.hc

On 07/26/2012 10:22 AM, Ali Shaheen wrote:
> Hi,
>     I tried with latest 0.11.1 ..it was giving error with avcodec_init() ..
> i think now it has been removed in 0.11.1.
> After commenting that, now i am getting SIGSEGV fault when
> av_find_stream_info(formatctx)     tries to fill my formatctx with the info
> from custom stream ( AVIOContext) .
> 
> I think i should move back to 0.8.11 again on which it was working :)
> 
> Thanks
> 
> On 20 July 2012 17:46, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> 
>> Ali Shaheen <ali.shaheen <at> popcatcher.com> writes:
>>
>>> I am using 0.8.11  and i have build for armv6.
>>
>> This is old, please test current git head.
>>
>>> I was wondering if there is some optimization flag
>>> or something..
>>
>>> which can enhance performance by multithreading.
>>
>> There is no multithreading for audio decoding
>> (and I would be surprised if a device that is too slow
>> to decode AAC provides multiple cores).
>>
>>> in build script i have used these flags.
>>> OPTIMIZE_CFLAGS="-marm -march=$CPU"
>>> --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1
>>> -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums
>>> -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS "
>>
>> Do you know that any of these flags have a positive effect
>> on performance?
>>
>> Carl Eugen
>>
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