From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans-Christian Egtvedt Date: Tue, 9 Dec 2008 14:58:39 +0100 Subject: [Buildroot] [PATCH 0/7] add Phonon support to qtopia4 In-Reply-To: References: <200811190244.44817.markus.heidelberg@web.de> <200812082300.09891.markus.heidelberg@web.de> <20081209070242.00734379@hcegtvedt> <200812091135.00129.markus.heidelberg@web.de> <20081209114501.247dc1dc@hcegtvedt> Message-ID: <20081209145839.3beed983@hcegtvedt> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net On Tue, 9 Dec 2008 11:34:28 -0200 "Thiago A. Corr?a" wrote: > >> > 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. > > Isn't DirectFB optimized? Qt has a DirectFB output plugin since 4.4 if > I'm not mistaken. It as a labs feature (labs.trolltech.com) that got > integrated into mainline. I guess it's not enabled in buildroot builds > yet though. > AFAIK DirectFB does not take advantage of any AVR32 instructions or PICO. -- Best regards, Hans-Christian Egtvedt