annotate src/audio/windx5/SDL_dx5audio.c @ 0:74212992fb08

Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children 7c47e511459d
rev   line source
0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Allow access to a raw mixing buffer */
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29
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30 #include <stdio.h>
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31
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32 #include "SDL_types.h"
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33 #include "SDL_error.h"
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34 #include "SDL_timer.h"
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35 #include "SDL_audio.h"
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36 #include "SDL_audio_c.h"
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37 #include "SDL_dx5audio.h"
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38
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39 /* Define this if you want to use DirectX 6 DirectSoundNotify interface */
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40 //#define USE_POSITION_NOTIFY
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41
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42 /* DirectX function pointers for audio */
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43 HRESULT (WINAPI *DSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
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44
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45 /* Audio driver functions */
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46 static int DX5_OpenAudio(_THIS, SDL_AudioSpec *spec);
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47 static void DX5_ThreadInit(_THIS);
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48 static void DX5_WaitAudio_BusyWait(_THIS);
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49 #ifdef USE_POSITION_NOTIFY
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50 static void DX6_WaitAudio_EventWait(_THIS);
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51 #endif
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52 static void DX5_PlayAudio(_THIS);
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53 static Uint8 *DX5_GetAudioBuf(_THIS);
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54 static void DX5_WaitDone(_THIS);
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55 static void DX5_CloseAudio(_THIS);
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56
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57 /* Audio driver bootstrap functions */
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58
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59 static int Audio_Available(void)
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60 {
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61 HINSTANCE DSoundDLL;
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62 int dsound_ok;
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63
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64 /* Version check DSOUND.DLL (Is DirectX okay?) */
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65 dsound_ok = 0;
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66 DSoundDLL = LoadLibrary("DSOUND.DLL");
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67 if ( DSoundDLL != NULL ) {
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68 /* We just use basic DirectSound, we're okay */
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69 /* Yay! */
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70 /* Unfortunately, the sound drivers on NT have
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71 higher latencies than the audio buffers used
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72 by many SDL applications, so there are gaps
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73 in the audio - it sounds terrible. Punt for now.
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74 */
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75 OSVERSIONINFO ver;
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76 ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
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77 GetVersionEx(&ver);
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78 switch (ver.dwPlatformId) {
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79 case VER_PLATFORM_WIN32_NT:
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80 if ( ver.dwMajorVersion > 4 ) {
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81 /* Win2K */
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82 dsound_ok = 1;
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83 } else {
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84 /* WinNT */
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85 dsound_ok = 0;
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86 }
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87 break;
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88 default:
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89 /* Win95 or Win98 */
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90 dsound_ok = 1;
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91 break;
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92 }
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93 /* Now check for DirectX 5 or better - otherwise
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94 * we will fail later in DX5_OpenAudio without a chance
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95 * to fall back to the DIB driver. */
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96 if (dsound_ok) {
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97 /* DirectSoundCaptureCreate was added in DX5 */
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98 if (!GetProcAddress(DSoundDLL, "DirectSoundCaptureCreate"))
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99 dsound_ok = 0;
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100
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101 }
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102 /* Clean up.. */
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103 FreeLibrary(DSoundDLL);
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104 }
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105 return(dsound_ok);
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106 }
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107
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108 /* Functions for loading the DirectX functions dynamically */
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109 static HINSTANCE DSoundDLL = NULL;
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110
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111 static void DX5_Unload(void)
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112 {
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113 if ( DSoundDLL != NULL ) {
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114 FreeLibrary(DSoundDLL);
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115 DSoundCreate = NULL;
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116 DSoundDLL = NULL;
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117 }
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118 }
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119 static int DX5_Load(void)
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120 {
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121 int status;
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122
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123 DX5_Unload();
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124 DSoundDLL = LoadLibrary("DSOUND.DLL");
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125 if ( DSoundDLL != NULL ) {
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126 DSoundCreate = (void *)GetProcAddress(DSoundDLL,
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127 "DirectSoundCreate");
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128 }
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129 if ( DSoundDLL && DSoundCreate ) {
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130 status = 0;
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131 } else {
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132 DX5_Unload();
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133 status = -1;
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134 }
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135 return status;
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136 }
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137
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138 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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139 {
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140 DX5_Unload();
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141 free(device->hidden);
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142 free(device);
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143 }
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144
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145 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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146 {
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147 SDL_AudioDevice *this;
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148
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149 /* Load DirectX */
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150 if ( DX5_Load() < 0 ) {
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151 return(NULL);
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152 }
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153
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154 /* Initialize all variables that we clean on shutdown */
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155 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
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156 if ( this ) {
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157 memset(this, 0, (sizeof *this));
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158 this->hidden = (struct SDL_PrivateAudioData *)
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159 malloc((sizeof *this->hidden));
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160 }
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161 if ( (this == NULL) || (this->hidden == NULL) ) {
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162 SDL_OutOfMemory();
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163 if ( this ) {
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164 free(this);
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165 }
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166 return(0);
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167 }
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168 memset(this->hidden, 0, (sizeof *this->hidden));
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169
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170 /* Set the function pointers */
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171 this->OpenAudio = DX5_OpenAudio;
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172 this->ThreadInit = DX5_ThreadInit;
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173 this->WaitAudio = DX5_WaitAudio_BusyWait;
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parents:
diff changeset
174 this->PlayAudio = DX5_PlayAudio;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175 this->GetAudioBuf = DX5_GetAudioBuf;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
176 this->WaitDone = DX5_WaitDone;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
177 this->CloseAudio = DX5_CloseAudio;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
178
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
179 this->free = Audio_DeleteDevice;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
180
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
181 return this;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 AudioBootStrap DSOUND_bootstrap = {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 "dsound", "Win95/98/2000 DirectSound",
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 Audio_Available, Audio_CreateDevice
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187 };
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 static void SetDSerror(const char *function, int code)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 static const char *error;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 static char errbuf[BUFSIZ];
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193
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parents:
diff changeset
194 errbuf[0] = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
195 switch (code) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
196 case E_NOINTERFACE:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
197 error =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
198 "Unsupported interface\n-- Is DirectX 5.0 or later installed?";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
199 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
200 case DSERR_ALLOCATED:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
201 error = "Audio device in use";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
202 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
203 case DSERR_BADFORMAT:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
204 error = "Unsupported audio format";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
205 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
206 case DSERR_BUFFERLOST:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
207 error = "Mixing buffer was lost";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
208 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 case DSERR_CONTROLUNAVAIL:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 error = "Control requested is not available";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 case DSERR_INVALIDCALL:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 error = "Invalid call for the current state";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
214 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 case DSERR_INVALIDPARAM:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 error = "Invalid parameter";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
218 case DSERR_NODRIVER:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 error = "No audio device found";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 case DSERR_OUTOFMEMORY:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 error = "Out of memory";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
223 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 case DSERR_PRIOLEVELNEEDED:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 error = "Caller doesn't have priority";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
227 case DSERR_UNSUPPORTED:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 error = "Function not supported";
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 sprintf(errbuf, "%s: Unknown DirectSound error: 0x%x",
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
232 function, code);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
234 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 if ( ! errbuf[0] ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 sprintf(errbuf, "%s: %s", function, error);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 SDL_SetError("%s", errbuf);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
239 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
240 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
241
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
242 /* DirectSound needs to be associated with a window */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
243 static HWND mainwin = NULL;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
244 /* */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
245 void DX5_SoundFocus(HWND hwnd)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
246 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
247 mainwin = hwnd;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
248 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
249
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
250 static void DX5_ThreadInit(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
251 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
252 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
253 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 static void DX5_WaitAudio_BusyWait(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 DWORD status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
258 DWORD cursor, junk;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
259 HRESULT result;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
260
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
261 /* Semi-busy wait, since we have no way of getting play notification
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
262 on a primary mixing buffer located in hardware (DirectX 5.0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
263 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
264 result = IDirectSoundBuffer_GetCurrentPosition(mixbuf, &cursor, &junk);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
266 if ( result == DSERR_BUFFERLOST ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
267 IDirectSoundBuffer_Restore(mixbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
268 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270 SetDSerror("DirectSound GetCurrentPosition", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
272 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
274 cursor /= mixlen;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
275
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 while ( cursor == playing ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 /* FIXME: find out how much time is left and sleep that long */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
278 SDL_Delay(10);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 /* Try to restore a lost sound buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 IDirectSoundBuffer_GetStatus(mixbuf, &status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 if ( (status&DSBSTATUS_BUFFERLOST) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 IDirectSoundBuffer_Restore(mixbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 IDirectSoundBuffer_GetStatus(mixbuf, &status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 if ( (status&DSBSTATUS_BUFFERLOST) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 if ( ! (status&DSBSTATUS_PLAYING) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 result = IDirectSoundBuffer_Play(mixbuf, 0, 0, DSBPLAY_LOOPING);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 if ( result == DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 continue;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 SetDSerror("DirectSound Play", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 /* Find out where we are playing */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 result = IDirectSoundBuffer_GetCurrentPosition(mixbuf,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 &cursor, &junk);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 SetDSerror("DirectSound GetCurrentPosition", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 cursor /= mixlen;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 #ifdef USE_POSITION_NOTIFY
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 static void DX6_WaitAudio_EventWait(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 DWORD status;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 HRESULT result;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 /* Try to restore a lost sound buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 IDirectSoundBuffer_GetStatus(mixbuf, &status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 if ( (status&DSBSTATUS_BUFFERLOST) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 IDirectSoundBuffer_Restore(mixbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 IDirectSoundBuffer_GetStatus(mixbuf, &status);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 if ( (status&DSBSTATUS_BUFFERLOST) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 if ( ! (status&DSBSTATUS_PLAYING) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 result = IDirectSoundBuffer_Play(mixbuf, 0, 0, DSBPLAY_LOOPING);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 SetDSerror("DirectSound Play", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 WaitForSingleObject(audio_event, INFINITE);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 #endif /* USE_POSITION_NOTIFY */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 static void DX5_PlayAudio(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 /* Unlock the buffer, allowing it to play */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 if ( locked_buf ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 IDirectSoundBuffer_Unlock(mixbuf, locked_buf, mixlen, NULL, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 static Uint8 *DX5_GetAudioBuf(_THIS)
74212992fb08 Initial revision
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349 {
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350 DWORD cursor, junk;
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351 HRESULT result;
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352 DWORD rawlen;
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353
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354 /* Figure out which blocks to fill next */
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355 locked_buf = NULL;
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356 result = IDirectSoundBuffer_GetCurrentPosition(mixbuf, &cursor, &junk);
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357 if ( result == DSERR_BUFFERLOST ) {
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358 IDirectSoundBuffer_Restore(mixbuf);
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359 result = IDirectSoundBuffer_GetCurrentPosition(mixbuf,
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360 &cursor, &junk);
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361 }
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362 if ( result != DS_OK ) {
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363 SetDSerror("DirectSound GetCurrentPosition", result);
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364 return(NULL);
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365 }
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366 cursor /= mixlen;
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367 playing = cursor;
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368 cursor = (cursor+1)%NUM_BUFFERS;
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369 cursor *= mixlen;
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370
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371 /* Lock the audio buffer */
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372 result = IDirectSoundBuffer_Lock(mixbuf, cursor, mixlen,
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373 (LPVOID *)&locked_buf, &rawlen, NULL, &junk, 0);
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374 if ( result == DSERR_BUFFERLOST ) {
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375 IDirectSoundBuffer_Restore(mixbuf);
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376 result = IDirectSoundBuffer_Lock(mixbuf, cursor, mixlen,
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377 (LPVOID *)&locked_buf, &rawlen, NULL, &junk, 0);
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378 }
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379 if ( result != DS_OK ) {
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380 SetDSerror("DirectSound Lock", result);
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381 return(NULL);
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382 }
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383 return(locked_buf);
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384 }
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385
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386 static void DX5_WaitDone(_THIS)
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387 {
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388 Uint8 *stream;
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389
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390 /* Wait for the playing chunk to finish */
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391 stream = this->GetAudioBuf(this);
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392 if ( stream != NULL ) {
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393 memset(stream, silence, mixlen);
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394 this->PlayAudio(this);
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395 }
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396 this->WaitAudio(this);
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397
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diff changeset
398 /* Stop the looping sound buffer */
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399 IDirectSoundBuffer_Stop(mixbuf);
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400 }
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diff changeset
401
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402 static void DX5_CloseAudio(_THIS)
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403 {
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404 if ( sound != NULL ) {
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diff changeset
405 if ( mixbuf != NULL ) {
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diff changeset
406 /* Clean up the audio buffer */
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407 IDirectSoundBuffer_Release(mixbuf);
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408 mixbuf = NULL;
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diff changeset
409 }
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diff changeset
410 if ( audio_event != NULL ) {
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diff changeset
411 CloseHandle(audio_event);
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diff changeset
412 audio_event = NULL;
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diff changeset
413 }
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diff changeset
414 IDirectSound_Release(sound);
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diff changeset
415 sound = NULL;
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diff changeset
416 }
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diff changeset
417 }
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diff changeset
418
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diff changeset
419 /* This function tries to create a primary audio buffer, and returns the
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diff changeset
420 number of audio chunks available in the created buffer.
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diff changeset
421 */
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422 static int CreatePrimary(LPDIRECTSOUND sndObj, HWND focus,
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423 LPDIRECTSOUNDBUFFER *sndbuf, WAVEFORMATEX *wavefmt, Uint32 chunksize)
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424 {
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425 HRESULT result;
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426 DSBUFFERDESC format;
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diff changeset
427 DSBCAPS caps;
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diff changeset
428 int numchunks;
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diff changeset
429
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diff changeset
430 /* Try to set primary mixing privileges */
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diff changeset
431 result = IDirectSound_SetCooperativeLevel(sndObj, focus,
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diff changeset
432 DSSCL_WRITEPRIMARY);
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diff changeset
433 if ( result != DS_OK ) {
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diff changeset
434 #ifdef DEBUG_SOUND
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diff changeset
435 SetDSerror("DirectSound SetCooperativeLevel", result);
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diff changeset
436 #endif
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diff changeset
437 return(-1);
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parents:
diff changeset
438 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439
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diff changeset
440 /* Try to create the primary buffer */
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diff changeset
441 memset(&format, 0, sizeof(format));
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diff changeset
442 format.dwSize = sizeof(format);
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diff changeset
443 format.dwFlags=(DSBCAPS_PRIMARYBUFFER|DSBCAPS_GETCURRENTPOSITION2);
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diff changeset
444 #ifdef USE_POSITION_NOTIFY
74212992fb08 Initial revision
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diff changeset
445 format.dwFlags |= DSBCAPS_CTRLPOSITIONNOTIFY;
74212992fb08 Initial revision
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diff changeset
446 #endif
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diff changeset
447 result = IDirectSound_CreateSoundBuffer(sndObj, &format, sndbuf, NULL);
74212992fb08 Initial revision
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diff changeset
448 if ( result != DS_OK ) {
74212992fb08 Initial revision
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parents:
diff changeset
449 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
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diff changeset
450 SetDSerror("DirectSound CreateSoundBuffer", result);
74212992fb08 Initial revision
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diff changeset
451 #endif
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parents:
diff changeset
452 return(-1);
74212992fb08 Initial revision
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parents:
diff changeset
453 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 /* Check the size of the fragment buffer */
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parents:
diff changeset
456 memset(&caps, 0, sizeof(caps));
74212992fb08 Initial revision
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diff changeset
457 caps.dwSize = sizeof(caps);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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diff changeset
458 result = IDirectSoundBuffer_GetCaps(*sndbuf, &caps);
74212992fb08 Initial revision
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parents:
diff changeset
459 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 SetDSerror("DirectSound GetCaps", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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diff changeset
463 IDirectSoundBuffer_Release(*sndbuf);
74212992fb08 Initial revision
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parents:
diff changeset
464 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 if ( (chunksize > caps.dwBufferBytes) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 ((caps.dwBufferBytes%chunksize) != 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 /* The primary buffer size is not a multiple of 'chunksize'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 -- this hopefully doesn't happen when 'chunksize' is a
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 power of 2.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 IDirectSoundBuffer_Release(*sndbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 SDL_SetError(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 "Primary buffer size is: %d, cannot break it into chunks of %d bytes\n",
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 caps.dwBufferBytes, chunksize);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 numchunks = (caps.dwBufferBytes/chunksize);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 /* Set the primary audio format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 result = IDirectSoundBuffer_SetFormat(*sndbuf, wavefmt);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 SetDSerror("DirectSound SetFormat", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 IDirectSoundBuffer_Release(*sndbuf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 return(numchunks);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 /* This function tries to create a secondary audio buffer, and returns the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 number of audio chunks available in the created buffer.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 static int CreateSecondary(LPDIRECTSOUND sndObj, HWND focus,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 LPDIRECTSOUNDBUFFER *sndbuf, WAVEFORMATEX *wavefmt, Uint32 chunksize)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 HRESULT result;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 DSBUFFERDESC format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 const int numchunks = 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 /* Try to set primary mixing privileges */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 if ( focus ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 result = IDirectSound_SetCooperativeLevel(sndObj,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 focus, DSSCL_PRIORITY);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 result = IDirectSound_SetCooperativeLevel(sndObj,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 GetDesktopWindow(), DSSCL_NORMAL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 SetDSerror("DirectSound SetCooperativeLevel", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 /* Try to create the secondary buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 memset(&format, 0, sizeof(format));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 format.dwSize = sizeof(format);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 format.dwFlags = DSBCAPS_GETCURRENTPOSITION2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 #ifdef USE_POSITION_NOTIFY
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 format.dwFlags |= DSBCAPS_CTRLPOSITIONNOTIFY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 if ( ! focus ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 format.dwFlags |= DSBCAPS_GLOBALFOCUS;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 format.dwBufferBytes = numchunks*chunksize;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 if ( (format.dwBufferBytes < DSBSIZE_MIN) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 (format.dwBufferBytes > DSBSIZE_MAX) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 SDL_SetError("Sound buffer size must be between %d and %d",
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 DSBSIZE_MIN/numchunks, DSBSIZE_MAX/numchunks);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 format.dwReserved = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 format.lpwfxFormat = wavefmt;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 result = IDirectSound_CreateSoundBuffer(sndObj, &format, sndbuf, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 SetDSerror("DirectSound CreateSoundBuffer", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 IDirectSoundBuffer_SetFormat(*sndbuf, wavefmt);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 /* We're ready to go */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 return(numchunks);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 /* This function tries to set position notify events on the mixing buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 #ifdef USE_POSITION_NOTIFY
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 static int CreateAudioEvent(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 LPDIRECTSOUNDNOTIFY notify;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 DSBPOSITIONNOTIFY *notify_positions;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 int i, retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 HRESULT result;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 /* Default to fail on exit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 notify = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 /* Query for the interface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 result = IDirectSoundBuffer_QueryInterface(mixbuf,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 &IID_IDirectSoundNotify, (void *)&notify);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 goto done;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 /* Allocate the notify structures */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 notify_positions = (DSBPOSITIONNOTIFY *)malloc(NUM_BUFFERS*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 sizeof(*notify_positions));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 if ( notify_positions == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 goto done;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 /* Create the notify event */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 audio_event = CreateEvent(NULL, FALSE, FALSE, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 if ( audio_event == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 goto done;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
578 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 /* Set up the notify structures */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581 for ( i=0; i<NUM_BUFFERS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 notify_positions[i].dwOffset = i*mixlen;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 notify_positions[i].hEventNotify = audio_event;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 result = IDirectSoundNotify_SetNotificationPositions(notify,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 NUM_BUFFERS, notify_positions);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 if ( result == DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 done:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 if ( notify != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 IDirectSoundNotify_Release(notify);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 #endif /* USE_POSITION_NOTIFY */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 static int DX5_OpenAudio(_THIS, SDL_AudioSpec *spec)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 HRESULT result;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 WAVEFORMATEX waveformat;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 /* Set basic WAVE format parameters */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 memset(&waveformat, 0, sizeof(waveformat));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 waveformat.wFormatTag = WAVE_FORMAT_PCM;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 /* Determine the audio parameters from the AudioSpec */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 switch ( spec->format & 0xFF ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 case 8:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 /* Unsigned 8 bit audio data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 spec->format = AUDIO_U8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 silence = 0x80;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 waveformat.wBitsPerSample = 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 case 16:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 /* Signed 16 bit audio data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 spec->format = AUDIO_S16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 silence = 0x00;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 waveformat.wBitsPerSample = 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 SDL_SetError("Unsupported audio format");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 waveformat.nChannels = spec->channels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 waveformat.nSamplesPerSec = spec->freq;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 waveformat.nBlockAlign =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 waveformat.nChannels * (waveformat.wBitsPerSample/8);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 waveformat.nAvgBytesPerSec =
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 waveformat.nSamplesPerSec * waveformat.nBlockAlign;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 /* Update the fragment size as size in bytes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 SDL_CalculateAudioSpec(spec);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 /* Open the audio device */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 result = DSoundCreate(NULL, &sound, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 if ( result != DS_OK ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 SetDSerror("DirectSoundCreate", result);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 /* Create the audio buffer to which we write */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 NUM_BUFFERS = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 if ( mainwin ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 NUM_BUFFERS = CreatePrimary(sound, mainwin, &mixbuf,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 &waveformat, spec->size);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 if ( NUM_BUFFERS < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 NUM_BUFFERS = CreateSecondary(sound, mainwin, &mixbuf,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 &waveformat, spec->size);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651 if ( NUM_BUFFERS < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655 fprintf(stderr, "Using secondary audio buffer\n");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 #ifdef DEBUG_SOUND
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
659 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660 fprintf(stderr, "Using primary audio buffer\n");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
661 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
662
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
663 /* The buffer will auto-start playing in DX5_WaitAudio() */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 playing = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665 mixlen = spec->size;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 #ifdef USE_POSITION_NOTIFY
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668 /* See if we can use DirectX 6 event notification */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 if ( CreateAudioEvent(this) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 this->WaitAudio = DX6_WaitAudio_EventWait;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 this->WaitAudio = DX5_WaitAudio_BusyWait;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677