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annotate src/video/directfb/SDL_DirectFB_render.h @ 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 99210400e8b9
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 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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5 This library is free software; you can redistribute it and/or
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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6 modify it under the terms of the GNU Lesser General Public
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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7 License as published by the Free Software Foundation; either
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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8 version 2.1 of the License, or (at your option) any later version.
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9
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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13 Lesser General Public License for more details.
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14
0e70b4b8cf84 Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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Sam Lantinga <slouken@libsdl.org>
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* SDL surface based renderer implementation */
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25
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26 #define SDL_DFB_RENDERERDATA(rend) DirectFB_RenderData *renddata = ((rend) ? (DirectFB_RenderData *) (rend)->driverdata : NULL)
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27
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28 extern void DirectFB_AddRenderDriver(_THIS);
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29
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30 /* vi: set ts=4 sw=4 expandtab: */