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annotate README.DirectFB @ 2661:d38309be5178 gsoc2008_audio_resampling

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The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
author Aaron Wishnick <schnarf@gmail.com>
date Wed, 02 Jul 2008 08:04:50 +0000
parents 0e70b4b8cf84
children 8133d1d278da
rev   line source
2226
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
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1 SDL on DirectFB
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2
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3 Supports:
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4
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5 - Hardware YUV overlays
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6 - OpenGL - software only
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7 - 2D/3D accelerations (depends on directfb driver)
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8
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9 What you need:
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10
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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11 DirectFB 1.0.0 - required
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12 Kernel-Framebuffer support: required: vesafb, radeonfb ....
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13 Mesa 7.0.x - optional for OpenGL
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14
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15 As of this writing 20070810 you need to pull Mesa from git and do the following:
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16
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17 ------------------------
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18 cd mesa
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19 make linux-directfb
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20 make
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21
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22 echo Installing - pleaser enter sudo pw.
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23
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24 sudo make install INSTALL_DIR=/usr/local/dfb_GL
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25 cd src/mesa/drivers/directfb
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26 make
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27 sudo make install INSTALL_DIR=/usr/local/dfb_GL
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28 ------------------------
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29
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30 To run the SDL - testprograms:
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31
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32 export SDL_VIDEODRIVER=directfb
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33 export LD_LIBRARY_PATH=/usr/local/dfb_GL/lib
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34 export LD_PRELOAD=/usr/local/dfb_GL/libGL.so.7
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35
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36 ./testgl
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37
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38 To use hardware accelerated YUV-overlays for YUV-textures, use:
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39
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40 export SDL_DIRECTFB_YUV_DIRECT=1
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41
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42 This is disabled by default. It will only support one concurrent
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43 overlay and may behave strange if not used with SDL_CreateYUvOverlay
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44 from SDLcompat.c.
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45