Mercurial > sdl-ios-xcode

annotate src/audio/windx5/SDL_dx5audio.c @ 2364:e321b52dee8f gsoc2008_iphone

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These files contain the audio support for iPhone. They are based on the CoreAudio audio driver for Mac OS X. The principle difference is that the iPhone doesn't seem to have a concept of audio devices ... it just has special units for audio in and audio out. Also had to change some functions to versions which seem to only exist on iPhone and will apparently exist in Mac OS X 10.6(!) There is currently no audio recording support -- my iPod Touch doesn't have a microphone to test this with.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 18 Jul 2008 17:53:54 +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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134 SDL_snprintf(errbuf, SDL_arraysize(errbuf),
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135 "%s: Unknown DirectSound error: 0x%x", function, code);
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136 break;
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137 }
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138 if (!errbuf[0]) {
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139 SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: %s", function,
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diff changeset
140 error);
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141 }
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142 SDL_SetError("%s", errbuf);
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143 return;
0
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144 }
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145
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146 /* DirectSound needs to be associated with a window */
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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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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;
0
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155 }
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diff changeset
156
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157 static void
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158 DSOUND_ThreadInit(_THIS)
0
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159 {
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160 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
0
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161 }
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162
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163 static void
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164 DSOUND_WaitDevice(_THIS)
0
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165 {
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166 DWORD status = 0;
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167 DWORD cursor = 0;
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168 DWORD junk = 0;
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169 HRESULT result = DS_OK;
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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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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191 IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
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192 if ((status & DSBSTATUS_BUFFERLOST)) {
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193 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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194 IDirectSoundBuffer_GetStatus(this->hidden->mixbuf, &status);
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195 if ((status & DSBSTATUS_BUFFERLOST)) {
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196 break;
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197 }
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198 }
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199 if (!(status & DSBSTATUS_PLAYING)) {
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diff changeset
200 result = IDirectSoundBuffer_Play(this->hidden->mixbuf, 0, 0,
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diff changeset
201 DSBPLAY_LOOPING);
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,
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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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216 return;
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diff changeset
217 }
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diff changeset
218 }
0
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diff changeset
219 }
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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;
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diff changeset
243 result = IDirectSoundBuffer_GetCurrentPosition(this->hidden->mixbuf,
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diff changeset
244 &junk, &cursor);
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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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diff changeset
248 &junk, &cursor);
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249 }
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250 if (result != DS_OK) {
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diff changeset
251 SetDSerror("DirectSound GetCurrentPosition", result);
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252 return (NULL);
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diff changeset
253 }
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diff changeset
254 cursor /= this->hidden->mixlen;
1877
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diff changeset
255 #ifdef DEBUG_SOUND
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
256 /* Detect audio dropouts */
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diff changeset
257 {
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diff changeset
258 DWORD spot = cursor;
2049
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diff changeset
259 if (spot < this->hidden->lastchunk) {
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260 spot += this->hidden->num_buffers;
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261 }
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262 if (spot > this->hidden->lastchunk + 1) {
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263 fprintf(stderr, "Audio dropout, missed %d fragments\n",
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264 (spot - (this->hidden->lastchunk + 1)));
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265 }
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266 }
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267 #endif
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268 this->hidden->lastchunk = cursor;
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269 cursor = (cursor + 1) % this->hidden->num_buffers;
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270 cursor *= this->hidden->mixlen;
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271
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272 /* Lock the audio buffer */
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273 result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
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274 this->hidden->mixlen,
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275 (LPVOID *) & this->hidden->locked_buf,
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276 &rawlen, NULL, &junk, 0);
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277 if (result == DSERR_BUFFERLOST) {
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278 IDirectSoundBuffer_Restore(this->hidden->mixbuf);
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279 result = IDirectSoundBuffer_Lock(this->hidden->mixbuf, cursor,
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280 this->hidden->mixlen,
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281 (LPVOID *) & this->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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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
308 DSOUND_CloseDevice(_THIS)
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309 {
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310 if (this->hidden != NULL) {
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diff changeset
311 if (this->hidden->sound != NULL) {
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312 if (this->hidden->mixbuf != NULL) {
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diff changeset
313 /* Clean up the audio buffer */
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diff changeset
314 IDirectSoundBuffer_Release(this->hidden->mixbuf);
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315 this->hidden->mixbuf = NULL;
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316 }
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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
383 (LPVOID *) & pvAudioPtr2, &dwAudioBytes2,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
384 DSBLOCK_ENTIREBUFFER);
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parents: 1877
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
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diff changeset
387 IDirectSoundBuffer_Unlock(*sndbuf,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1877
diff changeset
388 (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
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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
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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));
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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>
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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;
866052b01ee5 indent is evil
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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
1895
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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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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diff changeset
447 /* Open the audio device */
2049
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parents: 2008
diff changeset
448 result = DSoundCreate(NULL, &this->hidden->sound, NULL);
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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
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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.
Ryan C. Gordon <icculus@icculus.org>
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);
5f6550e5184f Merged SDL-ryan-multiple-audio-device branch r2803:2871 into the trunk.
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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>
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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>
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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
866052b01ee5 indent is evil
Sam Lantinga <slouken@libsdl.org>
parents: 2051
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: */