Mercurial > sdl-ios-xcode

annotate src/audio/dsp/SDL_dspaudio.c @ 3818:49eadd6e8962 SDL-ryan-multiple-audio-device

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Mangled ALSA dynamic loading...static loading will still work if you have the right libraries, but this is expected to break in general cases as we start dealing with different symbol versions, etc (but may work with, say, distro-specific packages, etc).
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 06 Oct 2006 19:45:11 +0000
parents 103bbe13f5eb
children 1f156fd874fa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Modified in Oct 2004 by Hannu Savolainen
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23 hannu@opensound.com
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24 */
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25 #include "SDL_config.h"
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26
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27 /* Allow access to a raw mixing buffer */
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28
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29 #include <stdio.h> /* For perror() */
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30 #include <string.h> /* For strerror() */
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31 #include <errno.h>
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32 #include <unistd.h>
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33 #include <fcntl.h>
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34 #include <signal.h>
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35 #include <sys/time.h>
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36 #include <sys/ioctl.h>
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37 #include <sys/stat.h>
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38
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39 #if SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H
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40 /* This is installed on some systems */
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41 #include <soundcard.h>
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42 #else
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43 /* This is recommended by OSS */
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44 #include <sys/soundcard.h>
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45 #endif
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46
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47 #include "SDL_timer.h"
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48 #include "SDL_audio.h"
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49 #include "../SDL_audiomem.h"
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50 #include "../SDL_audio_c.h"
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51 #include "../SDL_audiodev_c.h"
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52 #include "SDL_dspaudio.h"
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53
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54 /* The tag name used by DSP audio */
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55 #define DSP_DRIVER_NAME "dsp"
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56
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57 /* Open the audio device for playback, and don't block if busy */
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58 #define OPEN_FLAGS_OUTPUT (O_WRONLY|O_NONBLOCK)
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59 #define OPEN_FLAGS_INPUT (O_RDONLY|O_NONBLOCK)
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60
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61 /* Audio driver bootstrap functions */
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62
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63 static char **outputDevices = NULL;
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64 static int outputDeviceCount = 0;
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65 static char **inputDevices = NULL;
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66 static int inputDeviceCount = 0;
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67
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68 static inline void
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69 free_device_list(char ***devs, int *count)
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70 {
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71 SDL_FreeUnixAudioDevices(devs, count);
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72 }
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73
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74 static inline void
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75 build_device_list(int iscapture, char ***devs, int *count)
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76 {
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77 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
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78 free_device_list(devs, count);
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79 SDL_EnumUnixAudioDevices(flags, 0, NULL, devs, count);
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80 }
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81
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82 static inline void
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83 build_device_lists(void)
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84 {
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85 build_device_list(0, &outputDevices, &outputDeviceCount);
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86 build_device_list(1, &inputDevices, &inputDeviceCount);
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87 }
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88
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89
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90 static inline void
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91 free_device_lists(void)
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92 {
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93 free_device_list(&outputDevices, &outputDeviceCount);
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94 free_device_list(&inputDevices, &inputDeviceCount);
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95 }
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96
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97
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98 static int
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99 DSP_Available(void)
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100 {
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101 int available = 0;
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102 build_device_lists();
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103 available = ((outputDeviceCount > 0) || (inputDeviceCount > 0));
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104 free_device_lists();
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105 return available;
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106 }
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107
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108
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109 static void DSP_Deinitialize(void)
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110 {
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111 free_device_lists();
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112 }
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113
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114
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115 static int
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116 DSP_DetectDevices(int iscapture)
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117 {
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118 if (iscapture) {
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119 build_device_list(1, &inputDevices, &inputDeviceCount);
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120 return inputDeviceCount;
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121 } else {
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122 build_device_list(0, &outputDevices, &outputDeviceCount);
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123 return outputDeviceCount;
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124 }
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125
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126 return 0; /* shouldn't ever hit this. */
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127 }
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128
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129 static const char *
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130 DSP_GetDeviceName(int index, int iscapture)
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131 {
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132 if ((iscapture) && (index < inputDeviceCount)) {
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133 return inputDevices[index];
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134 } else if ((!iscapture) && (index < outputDeviceCount)) {
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135 return outputDevices[index];
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136 }
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137
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diff changeset
138 SDL_SetError("No such device");
3795
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diff changeset
139 return NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
140 }
74212992fb08 Initial revision
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parents:
diff changeset
141
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
142
3817
103bbe13f5eb Patched to compile.
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diff changeset
143 static void
103bbe13f5eb Patched to compile.
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diff changeset
144 DSP_CloseDevice(_THIS)
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parents: 3816
diff changeset
145 {
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parents: 3816
diff changeset
146 if (this->hidden != NULL) {
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parents: 3816
diff changeset
147 if (this->hidden->mixbuf != NULL) {
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diff changeset
148 SDL_FreeAudioMem(this->hidden->mixbuf);
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diff changeset
149 this->hidden->mixbuf = NULL;
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parents: 3816
diff changeset
150 }
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Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
151 if (this->hidden->audio_fd >= 0) {
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Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
152 close(this->hidden->audio_fd);
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diff changeset
153 this->hidden->audio_fd = -1;
103bbe13f5eb Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
154 }
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Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
155 SDL_free(this->hidden);
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Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
156 this->hidden = NULL;
103bbe13f5eb Patched to compile.
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parents: 3816
diff changeset
157 }
103bbe13f5eb Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
158 }
103bbe13f5eb Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
159
103bbe13f5eb Patched to compile.
Ryan C. Gordon <icculus@icculus.org>
parents: 3816
diff changeset
160
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diff changeset
161 static int
3795
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diff changeset
162 DSP_OpenDevice(_THIS, const char *devname, int iscapture)
0
74212992fb08 Initial revision
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parents:
diff changeset
163 {
3810
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diff changeset
164 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
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diff changeset
165 int format;
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diff changeset
166 int value;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
167 int frag_spec;
1982
3b4ce57c6215 First shot at new audio data types (int32 and float32).
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
168 SDL_AudioFormat test_format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
169
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diff changeset
170 /* We don't care what the devname is...we'll try to open anything. */
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
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parents: 3798
diff changeset
171 /* ...but default to first name in the list... */
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
172 if (devname == NULL) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
173 if ( ((iscapture) && (inputDeviceCount == 0)) ||
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
174 ((!iscapture) && (outputDeviceCount == 0)) ) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
175 SDL_SetError("No such audio device");
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
176 return 0;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
177 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
178 devname = ((iscapture) ? inputDevices[0] : outputDevices[0]);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
179 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
180
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589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
181 /* Initialize all variables that we clean on shutdown */
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
182 this->hidden = (struct SDL_PrivateAudioData *)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
183 SDL_malloc((sizeof *this->hidden));
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
184 if (this->hidden == NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
185 SDL_OutOfMemory();
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
186 return 0;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
187 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
188 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
189 this->hidden->audio_fd = -1;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
190
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diff changeset
191 /* Open the audio device */
3810
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
192 this->hidden->audio_fd = open(devname, flags, 0);
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
193 if (this->hidden->audio_fd < 0) {
3810
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets.
Ryan C. Gordon <icculus@icculus.org>
parents: 3798
diff changeset
194 SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
195 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
196 }
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
197 this->hidden->mixbuf = NULL;
968
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parents: 960
diff changeset
198
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
199 /* Make the file descriptor use blocking writes with fcntl() */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
200 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
201 long flags;
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
202 flags = fcntl(this->hidden->audio_fd, F_GETFL);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
203 flags &= ~O_NONBLOCK;
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
204 if (fcntl(this->hidden->audio_fd, F_SETFL, flags) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
205 SDL_SetError("Couldn't set audio blocking mode");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
206 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
207 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
208 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
209 }
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
210
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
211 /* Get a list of supported hardware formats */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
212 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETFMTS, &value) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
213 perror("SNDCTL_DSP_GETFMTS");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
214 SDL_SetError("Couldn't get audio format list");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
215 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
216 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
217 }
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
218
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
219 /* Try for a closest match on audio format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
220 format = 0;
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
221 for (test_format = SDL_FirstAudioFormat(this->spec.format);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
222 !format && test_format;) {
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
223 #ifdef DEBUG_AUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
224 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
225 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
226 switch (test_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
227 case AUDIO_U8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
228 if (value & AFMT_U8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
229 format = AFMT_U8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
230 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
231 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
232 case AUDIO_S16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
233 if (value & AFMT_S16_LE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
234 format = AFMT_S16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
235 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
236 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
237 case AUDIO_S16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
238 if (value & AFMT_S16_BE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
239 format = AFMT_S16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
240 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
241 break;
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
242 #if 0
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
243 /*
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
244 * These formats are not used by any real life systems so they are not
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
245 * needed here.
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
246 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
247 case AUDIO_S8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
248 if (value & AFMT_S8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
249 format = AFMT_S8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
250 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
251 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
252 case AUDIO_U16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
253 if (value & AFMT_U16_LE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
254 format = AFMT_U16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
255 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
256 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
257 case AUDIO_U16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
258 if (value & AFMT_U16_BE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
259 format = AFMT_U16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
260 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
261 break;
968
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
Sam Lantinga <slouken@libsdl.org>
parents: 960
diff changeset
262 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
263 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
264 format = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
265 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
266 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
267 if (!format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
268 test_format = SDL_NextAudioFormat();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
269 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
270 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
271 if (format == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
272 SDL_SetError("Couldn't find any hardware audio formats");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
273 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
274 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
275 }
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
276 this->spec.format = test_format;
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parents: 960
diff changeset
277
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parents: 1612
diff changeset
278 /* Set the audio format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
279 value = format;
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
280 if ( (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFMT, &value) < 0) ||
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
281 (value != format) ) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
282 perror("SNDCTL_DSP_SETFMT");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
283 SDL_SetError("Couldn't set audio format");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
284 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
285 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
286 }
968
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parents: 960
diff changeset
287
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
288 /* Set the number of channels of output */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
289 value = this->spec.channels;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
290 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_CHANNELS, &value) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
291 perror("SNDCTL_DSP_CHANNELS");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
292 SDL_SetError("Cannot set the number of channels");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
293 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
294 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
295 }
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
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parents: 1982
diff changeset
296 this->spec.channels = value;
968
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parents: 960
diff changeset
297
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
298 /* Set the DSP frequency */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
299 value = this->spec.freq;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
300 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SPEED, &value) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
301 perror("SNDCTL_DSP_SPEED");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
302 SDL_SetError("Couldn't set audio frequency");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
303 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
304 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
305 }
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
306 this->spec.freq = value;
0
74212992fb08 Initial revision
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parents:
diff changeset
307
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
308 /* Calculate the final parameters for this audio specification */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
309 SDL_CalculateAudioSpec(&this->spec);
0
74212992fb08 Initial revision
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parents:
diff changeset
310
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
311 /* Determine the power of two of the fragment size */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
312 for (frag_spec = 0; (0x01U << frag_spec) < this->spec.size; ++frag_spec);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
313 if ((0x01U << frag_spec) != this->spec.size) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
314 SDL_SetError("Fragment size must be a power of two");
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
315 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
316 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
317 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
318 frag_spec |= 0x00020000; /* two fragments, for low latency */
0
74212992fb08 Initial revision
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parents:
diff changeset
319
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1612
diff changeset
320 /* Set the audio buffering parameters */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 #ifdef DEBUG_AUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
322 fprintf(stderr, "Requesting %d fragments of size %d\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
323 (frag_spec >> 16), 1 << (frag_spec & 0xFFFF));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 #endif
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
325 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag_spec) < 0) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
326 perror("SNDCTL_DSP_SETFRAGMENT");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
327 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 #ifdef DEBUG_AUDIO
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
329 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
330 audio_buf_info info;
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
331 ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETOSPACE, &info);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
332 fprintf(stderr, "fragments = %d\n", info.fragments);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
333 fprintf(stderr, "fragstotal = %d\n", info.fragstotal);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
334 fprintf(stderr, "fragsize = %d\n", info.fragsize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
335 fprintf(stderr, "bytes = %d\n", info.bytes);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
336 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
339 /* Allocate mixing buffer */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
340 this->hidden->mixlen = this->spec.size;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
341 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
342 if (this->hidden->mixbuf == NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
343 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
344 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
345 }
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
346 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0
74212992fb08 Initial revision
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parents:
diff changeset
347
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
348 /* We're ready to rock and roll. :-) */
3795
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
349 return 1;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
350 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
351
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
352
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
353 static void
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
354 DSP_PlayDevice(_THIS)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
355 {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
356 const Uint8 *mixbuf = this->hidden->mixbuf;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
357 const int mixlen = this->hidden->mixlen;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
358 if (write(this->hidden->audio_fd, mixbuf, mixlen) == -1) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
359 perror("Audio write");
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
360 this->enabled = 0;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
361 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
362 #ifdef DEBUG_AUDIO
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
363 fprintf(stderr, "Wrote %d bytes of audio data\n", mixlen);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
364 #endif
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
365 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
366
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
367 static Uint8 *
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
368 DSP_GetDeviceBuf(_THIS)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
369 {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
370 return (this->hidden->mixbuf);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
371 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested!
Ryan C. Gordon <icculus@icculus.org>
parents: 1982
diff changeset
372
3816
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
373 static int
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
374 DSP_Init(SDL_AudioDriverImpl *impl)
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
375 {
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
376 /* Set the function pointers */
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
377 impl->DetectDevices = DSP_DetectDevices;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
378 impl->GetDeviceName = DSP_GetDeviceName;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
379 impl->OpenDevice = DSP_OpenDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
380 impl->PlayDevice = DSP_PlayDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
381 impl->GetDeviceBuf = DSP_GetDeviceBuf;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
382 impl->CloseDevice = DSP_CloseDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
383 impl->Deinitialize = DSP_Deinitialize;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
384
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
385 build_device_lists();
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
386 return 1;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
387 }
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
388
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
389
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
390 AudioBootStrap DSP_bootstrap = {
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
391 DSP_DRIVER_NAME, "OSS /dev/dsp standard audio",
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
392 DSP_Available, DSP_Init, 0
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
393 };
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I
Ryan C. Gordon <icculus@icculus.org>
parents: 3810
diff changeset
394
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1612
diff changeset
395 /* vi: set ts=4 sw=4 expandtab: */