add Phonon support to qtopia4
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Cover letter [Buildroot] [PATCH 0/7] add Phonon support to qtopia4
Quoted 3 lines · On Tue, 9 Dec 2008 11:34:59 +0100 Markus Heidelberg <[email protected]>…
Hans-Christian Egtvedt, 09.12.2008:
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On Mon, 8 Dec 2008 23:00:09 +0100
Markus Heidelberg <[email protected]> wrote:
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The reason playback is so slow is that you are probably not using the pixel coprocessor (PICO) to do the work. That was why getting gst-ffmpeg (libavcodec) with the AVR32 patches to work would be very nice.
This optimization with using the PICO should also be possible for Qt output, independent of video playback, shouldn't it?
No, you will have to write optimized assembly to take advantage of the PICO. Qt does not use the PICO by default, not even DSP or SIMD instructions.
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So currently I'm using mplayer -geometry
And with the AVR32 patch, this is quite optimized and uses the PICO.
Sounds comprehensible, I had not really thought about it. Are there plans or have there already been efforts to get the AVR32 patch into mainline ffmpeg? The mplayer version rc1 in buildroot is quite old, OK rc2 is not very new, too. But it seems as if the big atmel patch is preventing from updating.
I am looking into porting the PICO stuff for ffmpeg to upstream ffmpeg, and instead use that for mplayer. Then it should be easy to bump the version to rc2 as well.
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Best regards, Hans-Christian Egtvedt