Mercurial > sdl-ios-xcode

annotate src/audio/windx5/SDL_dx5audio.c @ 2938:2929ed239d2a

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Adjusted default choice of audio driver. If a driver can definitely see available devices, it is chosen. Otherwise, we'll take the first driver that initializes but saw no devices...this might be because it can't enumerate them, or there really aren't any available. This prevents the dsp driver from hogging control when there are no /dev/dsp* nodes (for example, on a Linux box with ALSA and no OSS emulation).
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 01 Jan 2009 07:54:58 +0000
parents 99210400e8b9
children 8f4ed5ec2b06
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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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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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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140 error);
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141 }
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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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146 /* DirectSound needs to be associated with a window */
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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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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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166 DWORD status = 0;
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167 DWORD cursor = 0;
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168 DWORD junk = 0;
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169 HRESULT result = DS_OK;
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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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174 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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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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186 while ((cursor / this->hidden->mixlen) == this->hidden->lastchunk) {
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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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190 /* Try to restore a lost sound buffer */
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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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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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197 }
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198 }
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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);
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202 if (result == DS_OK) {
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203 continue;
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204 }
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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 }
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210
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211 /* Find out where we are playing */
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212 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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213 &junk, &cursor);
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214 if (result != DS_OK) {
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215 SetDSerror("DirectSound GetCurrentPosition", result);
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216 return;
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diff changeset
217 }
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218 }
0
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219 }
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220
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221 static void
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222 DSOUND_PlayDevice(_THIS)
0
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223 {
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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
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diff changeset
231 }
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diff changeset
232
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233 static Uint8 *
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diff changeset
234 DSOUND_GetDeviceBuf(_THIS)
0
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diff changeset
235 {
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diff changeset
236 DWORD cursor = 0;
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diff changeset
237 DWORD junk = 0;
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diff changeset
238 HRESULT result = DS_OK;
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diff changeset
239 DWORD rawlen = 0;
0
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diff changeset
240
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241 /* Figure out which blocks to fill next */
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diff changeset
242 this->hidden->locked_buf = NULL;
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diff changeset
243 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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diff changeset
244 &junk, &cursor);
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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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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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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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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
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diff changeset
259 if (spot < this->hidden->lastchunk) {
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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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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
309 DSOUND_CloseDevice(_THIS)
0
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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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diff changeset
314 /* Clean up the audio buffer */
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diff changeset
315 IDirectSoundBuffer_Release(this->hidden->mixbuf);
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diff changeset
316 this->hidden->mixbuf = NULL;
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317 }
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diff changeset
318 IDirectSound_Release(this->hidden->sound);
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diff changeset
319 this->hidden->sound = NULL;
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320 }
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321
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diff changeset
322 SDL_free(this->hidden);
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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
376 SetDSerror("DirectSound CreateSoundBuffer", result);
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377 return (-1);
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diff changeset
378 }
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diff changeset
379 IDirectSoundBuffer_SetFormat(*sndbuf, wavefmt);
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380
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381 /* Silence the initial audio buffer */
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diff changeset
382 result = IDirectSoundBuffer_Lock(*sndbuf, 0, format.dwBufferBytes,
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diff changeset
383 (LPVOID *) & pvAudioPtr1, &dwAudioBytes1,
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parents: 1877
diff changeset
384 (LPVOID *) & pvAudioPtr2, &dwAudioBytes2,
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
385 DSBLOCK_ENTIREBUFFER);
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
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.
Sam Lantinga <slouken@libsdl.org>
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.
Sam Lantinga <slouken@libsdl.org>
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.
Sam Lantinga <slouken@libsdl.org>
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
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 {
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
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
Sam Lantinga <slouken@lokigames.com>
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 *)
2060
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Sam Lantinga <slouken@libsdl.org>
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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.
Ryan C. Gordon <icculus@icculus.org>
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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:
866052b01ee5 indent is evil
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diff changeset
421 case AUDIO_S32:
866052b01ee5 indent is evil
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diff changeset
422 this->spec.format = test_format;
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
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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.
Ryan C. Gordon <icculus@icculus.org>
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.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
440 waveformat.nBlockAlign =
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
441 waveformat.nChannels * (waveformat.wBitsPerSample / 8);
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
442 waveformat.nAvgBytesPerSec =
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
443 waveformat.nSamplesPerSec * waveformat.nBlockAlign;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444
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
445 /* Update the fragment size as size in bytes */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
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.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
448 /* Open the audio device */
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
449 result = DSoundCreate(NULL, &this->hidden->sound, NULL);
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
450 if (result != DS_OK) {
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
451 DSOUND_CloseDevice(this);
1895
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diff changeset
452 SetDSerror("DirectSoundCreate", result);
2049
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
453 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
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.
Sam Lantinga <slouken@libsdl.org>
parents: 1877
diff changeset
456 /* Create the audio buffer to which we write */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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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parents: 1877
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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Sam Lantinga <slouken@libsdl.org>
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
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2051
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
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2859
diff changeset
511 /* !!! FIXME: not right for device enum? */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
512 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
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
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
515 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
516 "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
517 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
518
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
519 /* vi: set ts=4 sw=4 expandtab: */