Re: ffmpeg based video player for ios devices.

On Monday 16 April 2012 14:20:59 compn wrote:
> 
> actually i think ffmpeg/ffplay/ffserver already builds for iphone.
> some documentation on how to build it would be nice for users.

It needs a minor patch to disable assembler optimized versions of a couple 
of functions, and truly horrendous configure opts, but other than that 
compiles fine.

libavutil/arm/intmath.h:
av_clip_uintp2_arm
av_clipl_int32_arm

Those are the two functions that the ancient Apple gcc + latest gas-
preprocessor fall over on.

Flags:
--enable-static --disable-shared --enable-pic --
sysroot="/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk" 
--extra-ldflags="-arch armv7 -isysroot 
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -
miphoneos-version-min=4.0" --enable-cross-compile --arch=arm --target-
os=darwin --
cc="/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" --
cpu=cortex-a8 --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-
min=4.0" --disable-debug --enable-small

--

-- 
Gavin Kinsey
AD Holdings Plc

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