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annotate src/video/gem/SDL_gemwm.c @ 2042:3908e1f808e1

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:56:36 +0000
parents 7312feb88dad
children
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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
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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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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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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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 GEM SDL video driver
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26 Window manager functions
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27
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28 Patrice Mandin
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29 */
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30
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31 /* Mint includes */
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32 #include <gem.h>
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33
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34 #include "SDL_gemwm_c.h"
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35
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36 /* Defines */
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37
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38 #define ICONWIDTH 64
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39 #define ICONHEIGHT 64
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40
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41 /* Functions */
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42
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43 void
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44 GEM_SetCaption(_THIS, const char *title, const char *icon)
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45 {
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46 if (title) {
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47 GEM_title_name = title;
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48 GEM_refresh_name = SDL_TRUE;
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49 }
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50
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51 if (icon) {
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52 GEM_icon_name = icon;
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53 GEM_refresh_name = SDL_TRUE;
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54 }
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55 }
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56
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57 void
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58 GEM_SetIcon(_THIS, SDL_Surface * icon, Uint8 * mask)
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59 {
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60 SDL_Surface *sicon;
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61 SDL_Rect bounds;
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62
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63 #if 0
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64 if ((GEM_wfeatures & (1 << WF_ICONIFY)) == 0) {
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65 return;
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66 }
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67 #endif
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68
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69 if (icon == NULL) {
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70 return;
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71 }
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72
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73 /* Convert icon to the screen format */
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74 sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
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75 VDI_bpp, VDI_redmask, VDI_greenmask,
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76 VDI_bluemask, 0);
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77 if (sicon == NULL) {
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78 return;
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79 }
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80
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81 bounds.x = 0;
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82 bounds.y = 0;
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83 bounds.w = icon->w;
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84 bounds.h = icon->h;
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85 if (SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0) {
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86 SDL_FreeSurface(sicon);
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87 return;
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88 }
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89
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90 GEM_icon = sicon;
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91 }
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92
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93 int
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94 GEM_IconifyWindow(_THIS)
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95 {
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96 if ((GEM_wfeatures & (1 << WF_ICONIFY)) == 0)
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97 return 0;
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98
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99 GEM_message[0] = WM_ICONIFY;
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100 GEM_message[1] = gl_apid;
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101 GEM_message[2] = 0;
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102 GEM_message[3] = GEM_handle;
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103 GEM_message[4] = 0;
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104 GEM_message[5] = GEM_desk_h - ICONHEIGHT;
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105 GEM_message[6] = ICONWIDTH;
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106 GEM_message[7] = ICONHEIGHT;
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107
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108 appl_write(gl_apid, sizeof(GEM_message), GEM_message);
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109
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110 return 1;
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111 }
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112
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113 SDL_GrabMode
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114 GEM_GrabInput(_THIS, SDL_GrabMode mode)
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115 {
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116 if (this->screen == NULL) {
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117 return SDL_GRAB_OFF;
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118 }
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119
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120 return mode;
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121 }
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123 /* vi: set ts=4 sw=4 expandtab: */