Mercurial > sdl-ios-xcode

annotate src/audio/windx5/SDL_dx5audio.c @ 2915:deb377097225

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Fixed CPU feature detection on x86_64 platform (registers were being corrupted, causing crashes)
author Sam Lantinga <slouken@libsdl.org>
date Wed, 24 Dec 2008 13:13:38 +0000
parents 99210400e8b9
children 2929ed239d2a
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 /* Allow access to a raw mixing buffer */
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25
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26 #include "SDL_timer.h"
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27 #include "SDL_audio.h"
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28 #include "../SDL_audio_c.h"
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29 #include "SDL_dx5audio.h"
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30
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31 /* !!! FIXME: move this somewhere that other drivers can use it... */
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32 #if defined(_WIN32_WCE)
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33 #define WINDOWS_OS_NAME "Windows CE/PocketPC"
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34 #elif defined(WIN64)
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35 #define WINDOWS_OS_NAME "Win64"
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36 #else
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37 #define WINDOWS_OS_NAME "Win32"
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38 #endif
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39
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40 /* DirectX function pointers for audio */
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41 static HINSTANCE DSoundDLL = NULL;
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42 static HRESULT(WINAPI * DSoundCreate) (LPGUID, LPDIRECTSOUND *, LPUNKNOWN) =
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43 NULL;
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44
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45 static void
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46 DSOUND_Unload(void)
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47 {
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48 if (DSoundDLL != NULL) {
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49 FreeLibrary(DSoundDLL);
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50 }
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51
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52 DSoundCreate = NULL;
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53 DSoundDLL = NULL;
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54 }
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55
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56
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57 static int
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58 DSOUND_Load(void)
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59 {
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60 int loaded = 0;
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61
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62 DSOUND_Unload();
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63
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64 DSoundDLL = LoadLibrary(TEXT("DSOUND.DLL"));
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65 if (DSoundDLL == NULL) {
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66 SDL_SetError("DirectSound: failed to load DSOUND.DLL");
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67 } else {
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68 /* Now make sure we have DirectX 5 or better... */
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69 /* (DirectSoundCaptureCreate was added in DX5) */
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70 if (!GetProcAddress(DSoundDLL, TEXT("DirectSoundCaptureCreate"))) {
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71 SDL_SetError("DirectSound: System doesn't appear to have DX5.");
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72 } else {
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73 DSoundCreate = (void *) GetProcAddress(DSoundDLL,
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74 TEXT("DirectSoundCreate"));
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75 }
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76
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77 if (!DSoundCreate) {
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78 SDL_SetError("DirectSound: Failed to find DirectSoundCreate");
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79 } else {
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80 loaded = 1;
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81 }
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82 }
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83
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84 if (!loaded) {
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85 DSOUND_Unload();
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86 }
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87
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88 return loaded;
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89 }
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90
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91
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92 static void
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93 SetDSerror(const char *function, int code)
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94 {
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95 static const char *error;
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96 static char errbuf[1024];
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97
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98 errbuf[0] = 0;
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99 switch (code) {
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100 case E_NOINTERFACE:
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101 error = "Unsupported interface -- Is DirectX 5.0 or later installed?";
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102 break;
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103 case DSERR_ALLOCATED:
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104 error = "Audio device in use";
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105 break;
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106 case DSERR_BADFORMAT:
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107 error = "Unsupported audio format";
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108 break;
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109 case DSERR_BUFFERLOST:
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110 error = "Mixing buffer was lost";
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111 break;
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112 case DSERR_CONTROLUNAVAIL:
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113 error = "Control requested is not available";
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114 break;
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115 case DSERR_INVALIDCALL:
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116 error = "Invalid call for the current state";
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117 break;
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118 case DSERR_INVALIDPARAM:
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119 error = "Invalid parameter";
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120 break;
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121 case DSERR_NODRIVER:
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122 error = "No audio device found";
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123 break;
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124 case DSERR_OUTOFMEMORY:
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125 error = "Out of memory";
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126 break;
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127 case DSERR_PRIOLEVELNEEDED:
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128 error = "Caller doesn't have priority";
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129 break;
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130 case DSERR_UNSUPPORTED:
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131 error = "Function not supported";
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132 break;
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133 default:
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diff changeset
134 SDL_snprintf(errbuf, SDL_arraysize(errbuf),
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135 "%s: Unknown DirectSound error: 0x%x", function, code);
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136 break;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
137 }
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138 if (!errbuf[0]) {
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139 SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: %s", function,
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diff changeset
140 error);
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diff changeset
141 }
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diff changeset
142 SDL_SetError("%s", errbuf);
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143 return;
0
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144 }
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145
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diff changeset
146 /* DirectSound needs to be associated with a window */
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diff changeset
147 static HWND mainwin = NULL;
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148 /* */
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149
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150 void
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diff changeset
151 DSOUND_SoundFocus(HWND hwnd)
0
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152 {
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153 /* !!! FIXME: probably broken with multi-window support in SDL 1.3 ... */
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154 mainwin = hwnd;
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155 }
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156
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157 static void
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158 DSOUND_ThreadInit(_THIS)
0
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159 {
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160 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
0
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161 }
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162
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163 static void
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164 DSOUND_WaitDevice(_THIS)
0
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165 {
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diff changeset
166 DWORD status = 0;
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167 DWORD cursor = 0;
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diff changeset
168 DWORD junk = 0;
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169 HRESULT result = DS_OK;
0
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170
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171 /* Semi-busy wait, since we have no way of getting play notification
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172 on a primary mixing buffer located in hardware (DirectX 5.0)
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173 */
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diff changeset
174 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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diff changeset
175 &junk, &cursor);
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176 if (result != DS_OK) {
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177 if (result == DSERR_BUFFERLOST) {
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178 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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179 }
0
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180 #ifdef DEBUG_SOUND
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181 SetDSerror("DirectSound GetCurrentPosition", result);
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182 #endif
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183 return;
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184 }
0
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185
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diff changeset
186 while ((cursor / this->hidden->mixlen) == this->hidden->lastchunk) {
1895
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187 /* FIXME: find out how much time is left and sleep that long */
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188 SDL_Delay(1);
0
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189
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diff changeset
190 /* Try to restore a lost sound buffer */
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diff changeset
191 IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
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192 if ((status & DSBSTATUS_BUFFERLOST)) {
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193 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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diff changeset
194 IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
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195 if ((status & DSBSTATUS_BUFFERLOST)) {
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196 break;
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diff changeset
197 }
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198 }
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diff changeset
199 if (!(status & DSBSTATUS_PLAYING)) {
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diff changeset
200 result = IDirectSoundBuffer_Play(this->hidden->mixbuf, 0, 0,
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diff changeset
201 DSBPLAY_LOOPING);
1895
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202 if (result == DS_OK) {
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203 continue;
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204 }
0
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205 #ifdef DEBUG_SOUND
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206 SetDSerror("DirectSound Play", result);
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207 #endif
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208 return;
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209 }
0
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210
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diff changeset
211 /* Find out where we are playing */
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diff changeset
212 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
1895
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213 &junk, &cursor);
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diff changeset
214 if (result != DS_OK) {
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diff changeset
215 SetDSerror("DirectSound GetCurrentPosition", result);
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diff changeset
216 return;
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diff changeset
217 }
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diff changeset
218 }
0
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diff changeset
219 }
74212992fb08 Initial revision
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diff changeset
220
1895
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diff changeset
221 static void
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diff changeset
222 DSOUND_PlayDevice(_THIS)
0
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diff changeset
223 {
1895
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diff changeset
224 /* Unlock the buffer, allowing it to play */
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diff changeset
225 if (this->hidden->locked_buf) {
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diff changeset
226 IDirectSoundBuffer_Unlock(this->hidden->mixbuf,
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diff changeset
227 this->hidden->locked_buf,
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diff changeset
228 this->hidden->mixlen, NULL, 0);
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229 }
0
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diff changeset
230
74212992fb08 Initial revision
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diff changeset
231 }
74212992fb08 Initial revision
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diff changeset
232
1895
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diff changeset
233 static Uint8 *
2049
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diff changeset
234 DSOUND_GetDeviceBuf(_THIS)
0
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diff changeset
235 {
2049
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diff changeset
236 DWORD cursor = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
237 DWORD junk = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
238 HRESULT result = DS_OK;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
239 DWORD rawlen = 0;
0
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diff changeset
240
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diff changeset
241 /* Figure out which blocks to fill next */
2049
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diff changeset
242 this->hidden->locked_buf = NULL;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
243 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
244 &junk, &cursor);
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diff changeset
245 if (result == DSERR_BUFFERLOST) {
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diff changeset
246 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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diff changeset
247 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
248 &junk, &cursor);
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249 }
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250 if (result != DS_OK) {
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251 SetDSerror("DirectSound GetCurrentPosition", result);
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diff changeset
252 return (NULL);
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diff changeset
253 }
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diff changeset
254 cursor /= this->hidden->mixlen;
1877
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
255 #ifdef DEBUG_SOUND
1895
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diff changeset
256 /* Detect audio dropouts */
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diff changeset
257 {
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diff changeset
258 DWORD spot = cursor;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
259 if (spot < this->hidden->lastchunk) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
260 spot += this->hidden->num_buffers;
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261 }
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262 if (spot > this->hidden->lastchunk + 1) {
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263 fprintf(stderr, "Audio dropout, missed %d fragments\n",
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264 (spot - (this->hidden->lastchunk + 1)));
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265 }
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266 }
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267 #endif
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268 this->hidden->lastchunk = cursor;
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269 cursor = (cursor + 1) % this->hidden->num_buffers;
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270 cursor *= this->hidden->mixlen;
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271
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272 /* Lock the audio buffer */
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273 result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
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274 this->hidden->mixlen,
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275 (LPVOID *) & this->hidden->locked_buf,
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276 &rawlen, NULL, &junk, 0);
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277 if (result == DSERR_BUFFERLOST) {
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278 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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279 result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
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280 this->hidden->mixlen,
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281 (LPVOID *) & this->
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282 hidden->locked_buf, &rawlen, NULL,
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283 &junk, 0);
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284 }
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285 if (result != DS_OK) {
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286 SetDSerror("DirectSound Lock", result);
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287 return (NULL);
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288 }
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289 return (this->hidden->locked_buf);
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290 }
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291
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292 static void
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293 DSOUND_WaitDone(_THIS)
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294 {
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295 Uint8 *stream = DSOUND_GetDeviceBuf(this);
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296
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297 /* Wait for the playing chunk to finish */
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298 if (stream != NULL) {
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299 SDL_memset(stream, this->spec.silence, this->hidden->mixlen);
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300 DSOUND_PlayDevice(this);
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301 }
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302 DSOUND_WaitDevice(this);
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303
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diff changeset
304 /* Stop the looping sound buffer */
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305 IDirectSoundBuffer_Stop(this->hidden->mixbuf);
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306 }
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307
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diff changeset
308 static void
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309 DSOUND_CloseDevice(_THIS)
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310 {
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311 if (this->hidden != NULL) {
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312 if (this->hidden->sound != NULL) {
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313 if (this->hidden->mixbuf != NULL) {
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314 /* Clean up the audio buffer */
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315 IDirectSoundBuffer_Release(this->hidden->mixbuf);
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316 this->hidden->mixbuf = NULL;
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317 }
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318 IDirectSound_Release(this->hidden->sound);
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319 this->hidden->sound = NULL;
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320 }
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321
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322 SDL_free(this->hidden);
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323 this->hidden = NULL;
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324 }
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325 }
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326
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327 /* This function tries to create a secondary audio buffer, and returns the
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328 number of audio chunks available in the created buffer.
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329 */
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330 static int
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331 CreateSecondary(_THIS, HWND focus, WAVEFORMATEX * wavefmt)
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332 {
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333 LPDIRECTSOUND sndObj = this->hidden->sound;
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334 LPDIRECTSOUNDBUFFER *sndbuf = &this->hidden->mixbuf;
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335 Uint32 chunksize = this->spec.size;
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336 const int numchunks = 8;
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337 HRESULT result = DS_OK;
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338 DSBUFFERDESC format;
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339 LPVOID pvAudioPtr1, pvAudioPtr2;
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340 DWORD dwAudioBytes1, dwAudioBytes2;
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341
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342 /* Try to set primary mixing privileges */
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343 if (focus) {
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344 result = IDirectSound_SetCooperativeLevel(sndObj,
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345 focus, DSSCL_PRIORITY);
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346 } else {
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347 result = IDirectSound_SetCooperativeLevel(sndObj,
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348 GetDesktopWindow(),
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349 DSSCL_NORMAL);
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350 }
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351 if (result != DS_OK) {
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352 SetDSerror("DirectSound SetCooperativeLevel", result);
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353 return (-1);
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354 }
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355
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356 /* Try to create the secondary buffer */
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357 SDL_memset(&format, 0, sizeof(format));
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358 format.dwSize = sizeof(format);
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359 format.dwFlags = DSBCAPS_GETCURRENTPOSITION2;
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360 if (!focus) {
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361 format.dwFlags |= DSBCAPS_GLOBALFOCUS;
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362 } else {
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363 format.dwFlags |= DSBCAPS_STICKYFOCUS;
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364 }
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365 format.dwBufferBytes = numchunks * chunksize;
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366 if ((format.dwBufferBytes < DSBSIZE_MIN) ||
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367 (format.dwBufferBytes > DSBSIZE_MAX)) {
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368 SDL_SetError("Sound buffer size must be between %d and %d",
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369 DSBSIZE_MIN / numchunks, DSBSIZE_MAX / numchunks);
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370 return (-1);
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371 }
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372 format.dwReserved = 0;
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373 format.lpwfxFormat = wavefmt;
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374 result = IDirectSound_CreateSoundBuffer(sndObj, &format, sndbuf, NULL);
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375 if (result != DS_OK) {
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376 SetDSerror("DirectSound CreateSoundBuffer", result);
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377 return (-1);
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diff changeset
378 }
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379 IDirectSoundBuffer_SetFormat(*sndbuf, wavefmt);
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380
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381 /* Silence the initial audio buffer */
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382 result = IDirectSoundBuffer_Lock(*sndbuf, 0, format.dwBufferBytes,
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383 (LPVOID *) & pvAudioPtr1, &dwAudioBytes1,
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384 (LPVOID *) & pvAudioPtr2, &dwAudioBytes2,
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diff changeset
385 DSBLOCK_ENTIREBUFFER);
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diff changeset
386 if (result == DS_OK) {
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
387 SDL_memset(pvAudioPtr1, this->spec.silence, dwAudioBytes1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
388 IDirectSoundBuffer_Unlock(*sndbuf,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
389 (LPVOID) pvAudioPtr1, dwAudioBytes1,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
390 (LPVOID) pvAudioPtr2, dwAudioBytes2);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
391 }
118
7c47e511459d Fix noise when starting audio under DX5 (thanks Jesse!)
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
392
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
393 /* We're ready to go */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
394 return (numchunks);
0
74212992fb08 Initial revision
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parents:
diff changeset
395 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
397 static int
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
398 DSOUND_OpenDevice(_THIS, const char *devname, int iscapture)
0
74212992fb08 Initial revision
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diff changeset
399 {
1895
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diff changeset
400 HRESULT result;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
401 WAVEFORMATEX waveformat;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
402 int valid_format = 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
403 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
0
74212992fb08 Initial revision
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parents:
diff changeset
404
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
405 /* !!! FIXME: handle devname */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
406 /* !!! FIXME: handle iscapture */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
407
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
408 /* Initialize all variables that we clean on shutdown */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
409 this->hidden = (struct SDL_PrivateAudioData *)
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diff changeset
410 SDL_malloc((sizeof *this->hidden));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
411 if (this->hidden == NULL) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
412 SDL_OutOfMemory();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
413 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
414 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
415 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
416
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
417 while ((!valid_format) && (test_format)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
418 switch (test_format) {
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419 case AUDIO_U8:
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diff changeset
420 case AUDIO_S16:
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diff changeset
421 case AUDIO_S32:
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diff changeset
422 this->spec.format = test_format;
866052b01ee5 indent is evil
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diff changeset
423 valid_format = 1;
866052b01ee5 indent is evil
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diff changeset
424 break;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
425 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
426 test_format = SDL_NextAudioFormat();
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
427 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
428
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
429 if (!valid_format) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
430 DSOUND_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
431 SDL_SetError("DirectSound: Unsupported audio format");
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2008
diff changeset
432 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
433 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
434
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
435 SDL_memset(&waveformat, 0, sizeof(waveformat));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
436 waveformat.wFormatTag = WAVE_FORMAT_PCM;
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
437 waveformat.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
438 waveformat.nChannels = this->spec.channels;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
439 waveformat.nSamplesPerSec = this->spec.freq;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
440 waveformat.nBlockAlign =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
441 waveformat.nChannels * (waveformat.wBitsPerSample / 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
442 waveformat.nAvgBytesPerSec =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
443 waveformat.nSamplesPerSec * waveformat.nBlockAlign;
0
74212992fb08 Initial revision
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diff changeset
444
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parents: 1877
diff changeset
445 /* Update the fragment size as size in bytes */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2008
diff changeset
446 SDL_CalculateAudioSpec(&this->spec);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
448 /* Open the audio device */
2049
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parents: 2008
diff changeset
449 result = DSoundCreate(NULL, &this->hidden->sound, NULL);
1895
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parents: 1877
diff changeset
450 if (result != DS_OK) {
2049
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
451 DSOUND_CloseDevice(this);
1895
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diff changeset
452 SetDSerror("DirectSoundCreate", result);
2049
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diff changeset
453 return 0;
1895
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diff changeset
454 }
0
74212992fb08 Initial revision
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parents:
diff changeset
455
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
456 /* Create the audio buffer to which we write */
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
457 this->hidden->num_buffers = CreateSecondary(this, mainwin, &waveformat);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
458 if (this->hidden->num_buffers < 0) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
459 DSOUND_CloseDevice(this);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
460 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
461 }
0
74212992fb08 Initial revision
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parents:
diff changeset
462
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
463 /* The buffer will auto-start playing in DSOUND_WaitDevice() */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
464 this->hidden->mixlen = this->spec.size;
0
74212992fb08 Initial revision
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parents:
diff changeset
465
2060
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diff changeset
466 return 1; /* good to go. */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
467 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
468
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
469
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
470 static void
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
471 DSOUND_Deinitialize(void)
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
472 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
473 DSOUND_Unload();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
476
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
477 static int
2060
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
478 DSOUND_Init(SDL_AudioDriverImpl * impl)
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
479 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
480 OSVERSIONINFO ver;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
481
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
482 /*
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
483 * Unfortunately, the sound drivers on NT have higher latencies than the
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
484 * audio buffers used by many SDL applications, so there are gaps in the
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
485 * audio - it sounds terrible. Punt for now.
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
486 */
2060
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
487 SDL_memset(&ver, '\0', sizeof(OSVERSIONINFO));
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
488 ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
489 GetVersionEx(&ver);
2050
bbc89e09503f Patched to compile again (thanks, Rasmus!).
Ryan C. Gordon <icculus@icculus.org>
parents: 2049
diff changeset
490 if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
491 if (ver.dwMajorVersion <= 4) {
2060
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parents: 2051
diff changeset
492 return 0; /* NT4.0 or earlier. Disable dsound support. */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
493 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
494 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
495
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
496 if (!DSOUND_Load()) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
497 return 0;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
498 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
499
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
500 /* Set the function pointers */
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
501 impl->OpenDevice = DSOUND_OpenDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
502 impl->PlayDevice = DSOUND_PlayDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
503 impl->WaitDevice = DSOUND_WaitDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
504 impl->WaitDone = DSOUND_WaitDone;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
505 impl->ThreadInit = DSOUND_ThreadInit;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
506 impl->GetDeviceBuf = DSOUND_GetDeviceBuf;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
507 impl->CloseDevice = DSOUND_CloseDevice;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
508 impl->Deinitialize = DSOUND_Deinitialize;
2060
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
509 impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
510
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
511 return 1;
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
512 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
513
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
514 AudioBootStrap DSOUND_bootstrap = {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
515 "dsound", WINDOWS_OS_NAME "DirectSound", DSOUND_Init, 0
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
516 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
517
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
518 /* vi: set ts=4 sw=4 expandtab: */