Mercurial > sdl-ios-xcode
annotate src/audio/SDL_audiodev.c @ 3100:7dc982143c06
Date: Sun, 22 Mar 2009 12:52:29 +0000
From: Luke Benstead
Subject: OpenGL 3.0 Context Creation
I've attached a patch which implements OpenGL 3.x context creation on
the latest SVN. I've added two options to SDL_GL_SetAttribute, these
are SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION.
These default to 2 and 1 respectively. If the major version is less
than 3 then the current context creation method is used, otherwise the
appropriate new context creation function is called (depending on the
platform).
Sample code:
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
printf("Unable to initialize SDL: %s\n", SDL_GetError());
return 1;
}
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); //Without these 2 lines, SDL will create a GL 2.x context
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL | SDL_FULLSCREEN );
I've implemented context creation on both Win32 and X and run basic
tests on both. This patch doesn't provide access to all the options
allowed by the new context creation (e.g. shared contexts, forward
compatible contexts) but they can be added pretty easily.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 24 Mar 2009 10:43:53 +0000 |
parents | 99210400e8b9 |
children | f7b03b6838cb |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* Get the name of the audio device we use for output */ | |
25 | |
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26 #if SDL_AUDIO_DRIVER_BSD || SDL_AUDIO_DRIVER_OSS || SDL_AUDIO_DRIVER_SUNAUDIO |
0 | 27 |
28 #include <fcntl.h> | |
29 #include <sys/types.h> | |
30 #include <sys/stat.h> | |
31 | |
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32 #include "SDL_stdinc.h" |
0 | 33 #include "SDL_audiodev_c.h" |
34 | |
35 #ifndef _PATH_DEV_DSP | |
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36 #if defined(__NETBSD__) || defined(__OPENBSD__) |
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37 #define _PATH_DEV_DSP "/dev/audio" |
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38 #else |
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39 #define _PATH_DEV_DSP "/dev/dsp" |
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40 #endif |
0 | 41 #endif |
42 #ifndef _PATH_DEV_DSP24 | |
43 #define _PATH_DEV_DSP24 "/dev/sound/dsp" | |
44 #endif | |
45 #ifndef _PATH_DEV_AUDIO | |
46 #define _PATH_DEV_AUDIO "/dev/audio" | |
47 #endif | |
48 | |
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49 static inline void |
2060 | 50 test_device(const char *fname, int flags, int (*test) (int fd), |
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51 char ***devices, int *devCount) |
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52 { |
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53 struct stat sb; |
2060 | 54 if ((stat(fname, &sb) == 0) && (S_ISCHR(sb.st_mode))) { |
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55 int audio_fd = open(fname, flags, 0); |
2060 | 56 if ((audio_fd >= 0) && (test(audio_fd))) { |
57 void *p = | |
58 SDL_realloc(*devices, ((*devCount) + 1) * sizeof(char *)); | |
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59 if (p != NULL) { |
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60 size_t len = strlen(fname) + 1; |
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61 char *str = (char *) SDL_malloc(len); |
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62 *devices = (char **) p; |
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63 if (str != NULL) { |
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64 SDL_strlcpy(str, fname, len); |
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65 (*devices)[(*devCount)++] = str; |
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66 } |
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67 } |
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68 close(audio_fd); |
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69 } |
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70 } |
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71 } |
0 | 72 |
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73 void |
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74 SDL_FreeUnixAudioDevices(char ***devices, int *devCount) |
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75 { |
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76 int i = *devCount; |
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77 if ((i > 0) && (*devices != NULL)) { |
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78 while (i--) { |
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79 SDL_free((*devices)[i]); |
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80 } |
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81 } |
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82 |
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83 if (*devices != NULL) { |
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84 SDL_free(*devices); |
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85 } |
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86 |
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87 *devices = NULL; |
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88 *devCount = 0; |
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89 } |
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90 |
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91 static int |
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92 test_stub(int fd) |
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93 { |
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94 return 1; |
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95 } |
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96 |
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97 void |
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99 char ***devices, int *devCount) |
0 | 100 { |
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101 const char *audiodev; |
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102 char audiopath[1024]; |
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104 if (test == NULL) |
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105 test = test_stub; |
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106 |
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107 /* Figure out what our audio device is */ |
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108 if (((audiodev = SDL_getenv("SDL_PATH_DSP")) == NULL) && |
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109 ((audiodev = SDL_getenv("AUDIODEV")) == NULL)) { |
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110 if (classic) { |
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111 audiodev = _PATH_DEV_AUDIO; |
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112 } else { |
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113 struct stat sb; |
0 | 114 |
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115 /* Added support for /dev/sound/\* in Linux 2.4 */ |
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116 if (((stat("/dev/sound", &sb) == 0) && S_ISDIR(sb.st_mode)) |
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117 && ((stat(_PATH_DEV_DSP24, &sb) == 0) |
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118 && S_ISCHR(sb.st_mode))) { |
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119 audiodev = _PATH_DEV_DSP24; |
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120 } else { |
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121 audiodev = _PATH_DEV_DSP; |
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122 } |
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123 } |
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124 } |
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125 test_device(audiodev, flags, test, devices, devCount); |
0 | 126 |
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127 if (SDL_strlen(audiodev) < (sizeof(audiopath) - 3)) { |
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128 int instance = 0; |
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129 while (instance++ <= 64) { |
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130 SDL_snprintf(audiopath, SDL_arraysize(audiopath), |
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131 "%s%d", audiodev, instance); |
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132 test_device(audiopath, flags, test, devices, devCount); |
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133 } |
0 | 134 } |
135 } | |
136 | |
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137 #endif /* Audio driver selection */ |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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138 /* vi: set ts=4 sw=4 expandtab: */ |