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annotate src/video/xbios/SDL_xbios_blowup.c @ 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 0e751c1f83f5
children 99210400e8b9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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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
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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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 /*
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25 Blowup extension definitions
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26
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27 Patrice Mandin
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28 */
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29
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30 #include <mint/falcon.h>
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31
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32 #include "SDL_xbios.h"
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33 #include "SDL_xbios_blowup.h"
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34
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35 void
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36 SDL_XBIOS_BlowupInit(_THIS, blow_cookie_t * cookie_blow)
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37 {
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38 #if 0
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39 int i, num_mode, bank;
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40 blow_mode_t *blow_mode;
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41
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42 /* Add bit 15 for old modes */
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43 for (i = 0; i < XBIOS_nummodes; i++) {
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44 XBIOS_modelist[i].number |= 1 << 15;
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45 }
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46
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47 /* Add Blowup modes for 8 and 16 bpp */
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48 for (num_mode = 3; num_mode < 5; num_mode++) {
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49 bank = cookie_blow->num_mode[num_mode];
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50 blow_mode = &(cookie_blow->blowup_modes[num_mode + (bank * 5)]);
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51
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52 /* Check extended mode enabled */
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53 if (blow_mode->enabled == 0) {
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54 /* Check monitor needed for this mode */
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55 if ((blow_mode->monitor == cookie_blow->montype)
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56 || ((blow_mode->monitor == MONITOR_TV)
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57 && (cookie_blow->montype == MONITOR_RGB))
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58 || ((blow_mode->monitor == MONITOR_RGB)
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59 && (cookie_blow->montype == MONITOR_TV))) {
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60 /* we can use this extended mode */
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61 SDL_XBIOS_AddMode(_this,
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62 num_mode == 3 ? BPS8 : BPS16,
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63 blow_mode->width + 1,
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64 blow_mode->height + 1,
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65 num_mode == 3 ? 8 : 16, SDL_FALSE);
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66 }
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67 }
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68 }
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69 #endif
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70 }
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71
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72 /* vi: set ts=4 sw=4 expandtab: */