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annotate src/audio/windx5/SDL_dx5audio.c @ 2273:a25bc0f79557

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Fixed bug #471
author Sam Lantinga <slouken@libsdl.org>
date Tue, 21 Aug 2007 06:54:07 +0000
parents 866052b01ee5
children e1da92da346c
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #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->hidden->
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282 locked_buf, &rawlen, NULL, &junk, 0);
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283 }
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284 if (result != DS_OK) {
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285 SetDSerror("DirectSound Lock", result);
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286 return (NULL);
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287 }
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288 return (this->hidden->locked_buf);
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289 }
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290
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291 static void
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292 DSOUND_WaitDone(_THIS)
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293 {
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294 Uint8 *stream = DSOUND_GetDeviceBuf(this);
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295
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296 /* Wait for the playing chunk to finish */
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297 if (stream != NULL) {
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298 SDL_memset(stream, this->spec.silence, this->hidden->mixlen);
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299 DSOUND_PlayDevice(this);
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300 }
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301 DSOUND_WaitDevice(this);
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302
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diff changeset
303 /* Stop the looping sound buffer */
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304 IDirectSoundBuffer_Stop(this->hidden->mixbuf);
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305 }
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306
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diff changeset
307 static void
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308 DSOUND_CloseDevice(_THIS)
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309 {
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310 if (this->hidden != NULL) {
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311 if (this->hidden->sound != NULL) {
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312 if (this->hidden->mixbuf != NULL) {
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313 /* Clean up the audio buffer */
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314 IDirectSoundBuffer_Release(this->hidden->mixbuf);
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315 this->hidden->mixbuf = NULL;
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316 }
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317 IDirectSound_Release(this->hidden->sound);
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318 this->hidden->sound = NULL;
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319 }
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320
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321 SDL_free(this->hidden);
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322 this->hidden = NULL;
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323 }
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324 }
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325
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326 /* This function tries to create a secondary audio buffer, and returns the
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327 number of audio chunks available in the created buffer.
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328 */
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329 static int
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330 CreateSecondary(_THIS, HWND focus, WAVEFORMATEX * wavefmt)
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331 {
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332 LPDIRECTSOUND sndObj = this->hidden->sound;
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333 LPDIRECTSOUNDBUFFER *sndbuf = &this->hidden->mixbuf;
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334 Uint32 chunksize = this->spec.size;
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335 const int numchunks = 8;
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336 HRESULT result = DS_OK;
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337 DSBUFFERDESC format;
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338 LPVOID pvAudioPtr1, pvAudioPtr2;
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339 DWORD dwAudioBytes1, dwAudioBytes2;
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340
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341 /* Try to set primary mixing privileges */
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342 if (focus) {
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343 result = IDirectSound_SetCooperativeLevel(sndObj,
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344 focus, DSSCL_PRIORITY);
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345 } else {
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346 result = IDirectSound_SetCooperativeLevel(sndObj,
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347 GetDesktopWindow(),
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348 DSSCL_NORMAL);
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349 }
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350 if (result != DS_OK) {
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351 SetDSerror("DirectSound SetCooperativeLevel", result);
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352 return (-1);
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353 }
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354
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355 /* Try to create the secondary buffer */
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356 SDL_memset(&format, 0, sizeof(format));
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357 format.dwSize = sizeof(format);
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358 format.dwFlags = DSBCAPS_GETCURRENTPOSITION2;
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359 if (!focus) {
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360 format.dwFlags |= DSBCAPS_GLOBALFOCUS;
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361 } else {
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362 format.dwFlags |= DSBCAPS_STICKYFOCUS;
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363 }
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364 format.dwBufferBytes = numchunks * chunksize;
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365 if ((format.dwBufferBytes < DSBSIZE_MIN) ||
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366 (format.dwBufferBytes > DSBSIZE_MAX)) {
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367 SDL_SetError("Sound buffer size must be between %d and %d",
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368 DSBSIZE_MIN / numchunks, DSBSIZE_MAX / numchunks);
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369 return (-1);
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370 }
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371 format.dwReserved = 0;
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372 format.lpwfxFormat = wavefmt;
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373 result = IDirectSound_CreateSoundBuffer(sndObj, &format, sndbuf, NULL);
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374 if (result != DS_OK) {
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375 SetDSerror("DirectSound CreateSoundBuffer", result);
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376 return (-1);
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diff changeset
377 }
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diff changeset
378 IDirectSoundBuffer_SetFormat(*sndbuf, wavefmt);
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379
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380 /* Silence the initial audio buffer */
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381 result = IDirectSoundBuffer_Lock(*sndbuf, 0, format.dwBufferBytes,
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382 (LPVOID *) & pvAudioPtr1, &dwAudioBytes1,
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383 (LPVOID *) & pvAudioPtr2, &dwAudioBytes2,
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diff changeset
384 DSBLOCK_ENTIREBUFFER);
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diff changeset
385 if (result == DS_OK) {
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
386 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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diff changeset
387 IDirectSoundBuffer_Unlock(*sndbuf,
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diff changeset
388 (LPVOID) pvAudioPtr1, dwAudioBytes1,
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
389 (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
390 }
118
7c47e511459d Fix noise when starting audio under DX5 (thanks Jesse!)
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
391
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
392 /* 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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diff changeset
393 return (numchunks);
0
74212992fb08 Initial revision
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diff changeset
394 }
74212992fb08 Initial revision
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parents:
diff changeset
395
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diff changeset
396 static int
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
397 DSOUND_OpenDevice(_THIS, const char *devname, int iscapture)
0
74212992fb08 Initial revision
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diff changeset
398 {
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diff changeset
399 HRESULT result;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
400 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
401 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
402 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
404 /* !!! 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
405 /* !!! 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
406
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
407 /* 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
408 this->hidden = (struct SDL_PrivateAudioData *)
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diff changeset
409 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
410 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
411 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
412 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
413 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
414 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
415
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
416 while ((!valid_format) && (test_format)) {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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diff changeset
417 switch (test_format) {
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418 case AUDIO_U8:
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419 case AUDIO_S16:
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diff changeset
420 case AUDIO_S32:
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diff changeset
421 this->spec.format = test_format;
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diff changeset
422 valid_format = 1;
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diff changeset
423 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
424 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
425 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
426 }
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 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
429 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
430 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
431 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
432 }
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
433
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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
434 SDL_memset(&waveformat, 0, sizeof(waveformat));
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
435 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
436 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
437 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
438 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
439 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
440 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
441 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
442 waveformat.nSamplesPerSec * waveformat.nBlockAlign;
0
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diff changeset
443
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parents: 1877
diff changeset
444 /* 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
445 SDL_CalculateAudioSpec(&this->spec);
0
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parents:
diff changeset
446
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parents: 1877
diff changeset
447 /* Open the audio device */
2049
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parents: 2008
diff changeset
448 result = DSoundCreate(NULL, &this->hidden->sound, NULL);
1895
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diff changeset
449 if (result != DS_OK) {
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
450 DSOUND_CloseDevice(this);
1895
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diff changeset
451 SetDSerror("DirectSoundCreate", result);
2049
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diff changeset
452 return 0;
1895
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diff changeset
453 }
0
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parents:
diff changeset
454
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
455 /* Create the audio buffer to which we write */
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2008
diff changeset
456 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
457 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
458 DSOUND_CloseDevice(this);
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parents: 2008
diff changeset
459 return 0;
1895
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diff changeset
460 }
0
74212992fb08 Initial revision
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parents:
diff changeset
461
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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parents: 2008
diff changeset
462 /* The buffer will auto-start playing in DSOUND_WaitDevice() */
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parents: 2008
diff changeset
463 this->hidden->mixlen = this->spec.size;
0
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parents:
diff changeset
464
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diff changeset
465 return 1; /* good to go. */
2049
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parents: 2008
diff changeset
466 }
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 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
470 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
471 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
472 DSOUND_Unload();
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474
2049
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
475
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
476 static int
2060
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
477 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
478 {
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
479 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
480
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 * 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
483 * 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
484 * 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
485 */
2060
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diff changeset
486 SDL_memset(&ver, '\0', sizeof(OSVERSIONINFO));
2049
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
487 ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
488 GetVersionEx(&ver);
2050
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Ryan C. Gordon <icculus@icculus.org>
parents: 2049
diff changeset
489 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
490 if (ver.dwMajorVersion <= 4) {
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parents: 2051
diff changeset
491 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
492 }
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 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
496 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
497 }
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 /* 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
500 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
501 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
502 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
503 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
504 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
505 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
506 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
507 impl->Deinitialize = DSOUND_Deinitialize;
2060
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diff changeset
508 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
509
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
510 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
511 }
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 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
514 "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
515 };
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents: 2008
diff changeset
516
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
517 /* vi: set ts=4 sw=4 expandtab: */