annotate src/audio/dart/SDL_dart.c @ 3851:405a192b68e7 SDL-1.2

Backport from 1.3: most of the audio drivers can now handle data conversion at a higher level when they can't open the hardware in the exact format requested.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 01 Sep 2006 22:50:24 +0000
parents d910939febfa
children 5b5e549382b3
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_dart.h"
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30
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31 // Buffer states:
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32 #define BUFFER_EMPTY 0
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33 #define BUFFER_USED 1
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34
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35 typedef struct _tMixBufferDesc {
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36 int iBufferUsage; // BUFFER_EMPTY or BUFFER_USED
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37 SDL_AudioDevice *pSDLAudioDevice;
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38 } tMixBufferDesc, *pMixBufferDesc;
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39
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40
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41 //---------------------------------------------------------------------
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42 // DARTEventFunc
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43 //
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44 // This function is called by DART, when an event occures, like end of
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45 // playback of a buffer, etc...
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46 //---------------------------------------------------------------------
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47 LONG APIENTRY DARTEventFunc(ULONG ulStatus,
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48 PMCI_MIX_BUFFER pBuffer,
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49 ULONG ulFlags)
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50 {
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51 if (ulFlags && MIX_WRITE_COMPLETE)
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52 { // Playback of buffer completed!
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53
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54 // Get pointer to buffer description
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55 pMixBufferDesc pBufDesc;
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56
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57 if (pBuffer)
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58 {
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59 pBufDesc = (pMixBufferDesc) (*pBuffer).ulUserParm;
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60
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61 if (pBufDesc)
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62 {
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63 SDL_AudioDevice *pSDLAudioDevice = pBufDesc->pSDLAudioDevice;
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64 // Set the buffer to be empty
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65 pBufDesc->iBufferUsage = BUFFER_EMPTY;
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66 // And notify DART feeder thread that it will have to work a bit.
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67 if (pSDLAudioDevice)
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68 DosPostEventSem(pSDLAudioDevice->hidden->hevAudioBufferPlayed);
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69 }
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70 }
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71 }
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72 return TRUE;
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73 }
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74
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75
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76 int DART_OpenAudio(_THIS, SDL_AudioSpec *spec)
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77 {
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78 SDL_AudioFormat test_format = SDL_FirstAudioFormat(spec->format);
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79 int valid_datatype = 0;
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80 MCI_AMP_OPEN_PARMS AmpOpenParms;
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81 MCI_GENERIC_PARMS GenericParms;
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82 int iDeviceOrd = 0; // Default device to be used
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83 int bOpenShared = 1; // Try opening it shared
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84 int iBits = 16; // Default is 16 bits signed
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85 int iFreq = 44100; // Default is 44KHz
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86 int iChannels = 2; // Default is 2 channels (Stereo)
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87 int iNumBufs = 2; // Number of audio buffers: 2
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88 int iBufSize;
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89 int iOpenMode;
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90 int iSilence;
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91 int rc;
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92
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93 // First thing is to try to open a given DART device!
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94 SDL_memset(&AmpOpenParms, 0, sizeof(MCI_AMP_OPEN_PARMS));
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95 // pszDeviceType should contain the device type in low word, and device ordinal in high word!
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96 AmpOpenParms.pszDeviceType = (PSZ) (MCI_DEVTYPE_AUDIO_AMPMIX | (iDeviceOrd << 16));
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97
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98 iOpenMode = MCI_WAIT | MCI_OPEN_TYPE_ID;
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99 if (bOpenShared) iOpenMode |= MCI_OPEN_SHAREABLE;
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100
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101 rc = mciSendCommand( 0, MCI_OPEN,
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102 iOpenMode,
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103 (PVOID) &AmpOpenParms, 0);
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104 if (rc!=MCIERR_SUCCESS) // No audio available??
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105 return (-1);
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106 // Save the device ID we got from DART!
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107 // We will use this in the next calls!
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108 iDeviceOrd = AmpOpenParms.usDeviceID;
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109
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110 // Determine the audio parameters from the AudioSpec
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111 if (spec->channels > 2)
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112 spec->channels = 2; // !!! FIXME: more than stereo support in OS/2?
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113
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114 while ((!valid_datatype) && (test_format)) {
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115 spec->format = test_format;
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116 valid_datatype = 1;
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117 switch (test_format) {
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118 case AUDIO_U8:
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119 // Unsigned 8 bit audio data
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120 iSilence = 0x80;
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121 iBits = 8;
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122 break;
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123
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124 case AUDIO_S16LSB:
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125 // Signed 16 bit audio data
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126 iSilence = 0x00;
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127 iBits = 16;
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128 break;
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129
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130 default:
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131 valid_datatype = 0;
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132 test_format = SDL_NextAudioFormat();
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133 break;
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134 }
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135 }
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136
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137 if (!valid_datatype) { // shouldn't happen, but just in case...
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138 // Close DART, and exit with error code!
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139 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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140 SDL_SetError("Unsupported audio format");
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141 return (-1);
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142 }
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143
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144 iFreq = spec->freq;
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145 iChannels = spec->channels;
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146 /* Update the fragment size as size in bytes */
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147 SDL_CalculateAudioSpec(spec);
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148 iBufSize = spec->size;
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149
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150 // Now query this device if it supports the given freq/bits/channels!
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151 SDL_memset(&(_this->hidden->MixSetupParms), 0, sizeof(MCI_MIXSETUP_PARMS));
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152 _this->hidden->MixSetupParms.ulBitsPerSample = iBits;
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153 _this->hidden->MixSetupParms.ulFormatTag = MCI_WAVE_FORMAT_PCM;
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154 _this->hidden->MixSetupParms.ulSamplesPerSec = iFreq;
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155 _this->hidden->MixSetupParms.ulChannels = iChannels;
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156 _this->hidden->MixSetupParms.ulFormatMode = MCI_PLAY;
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157 _this->hidden->MixSetupParms.ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
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158 _this->hidden->MixSetupParms.pmixEvent = DARTEventFunc;
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159 rc = mciSendCommand (iDeviceOrd, MCI_MIXSETUP,
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160 MCI_WAIT | MCI_MIXSETUP_QUERYMODE,
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161 &(_this->hidden->MixSetupParms), 0);
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162 if (rc!=MCIERR_SUCCESS)
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163 { // The device cannot handle this format!
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164 // Close DART, and exit with error code!
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165 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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166 SDL_SetError("Audio device doesn't support requested audio format");
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167 return(-1);
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168 }
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169 // The device can handle this format, so initialize!
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170 rc = mciSendCommand(iDeviceOrd, MCI_MIXSETUP,
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171 MCI_WAIT | MCI_MIXSETUP_INIT,
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172 &(_this->hidden->MixSetupParms), 0);
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173 if (rc!=MCIERR_SUCCESS)
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174 { // The device could not be opened!
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175 // Close DART, and exit with error code!
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176 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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177 SDL_SetError("Audio device could not be set up");
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178 return(-1);
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179 }
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180 // Ok, the device is initialized.
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181 // Now we should allocate buffers. For this, we need a place where
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182 // the buffer descriptors will be:
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183 _this->hidden->pMixBuffers = (MCI_MIX_BUFFER *) SDL_malloc(sizeof(MCI_MIX_BUFFER)*iNumBufs);
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184 if (!(_this->hidden->pMixBuffers))
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185 { // Not enough memory!
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186 // Close DART, and exit with error code!
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187 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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188 SDL_SetError("Not enough memory for audio buffer descriptors");
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189 return(-1);
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190 }
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191 // Now that we have the place for buffer list, we can ask DART for the
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192 // buffers!
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193 _this->hidden->BufferParms.ulNumBuffers = iNumBufs; // Number of buffers
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194 _this->hidden->BufferParms.ulBufferSize = iBufSize; // each with this size
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195 _this->hidden->BufferParms.pBufList = _this->hidden->pMixBuffers; // getting descriptorts into this list
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196 // Allocate buffers!
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197 rc = mciSendCommand(iDeviceOrd, MCI_BUFFER,
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198 MCI_WAIT | MCI_ALLOCATE_MEMORY,
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199 &(_this->hidden->BufferParms), 0);
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200 if ((rc!=MCIERR_SUCCESS) || (iNumBufs != _this->hidden->BufferParms.ulNumBuffers) || (_this->hidden->BufferParms.ulBufferSize==0))
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201 { // Could not allocate memory!
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202 // Close DART, and exit with error code!
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203 SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
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204 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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205 SDL_SetError("DART could not allocate buffers");
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206 return(-1);
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207 }
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208 // Ok, we have all the buffers allocated, let's mark them!
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209 {
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210 int i;
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211 for (i=0; i<iNumBufs; i++)
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212 {
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213 pMixBufferDesc pBufferDesc = (pMixBufferDesc) SDL_malloc(sizeof(tMixBufferDesc));;
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214 // Check if this buffer was really allocated by DART
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215 if ((!(_this->hidden->pMixBuffers[i].pBuffer)) || (!pBufferDesc))
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216 { // Wrong buffer!
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217 // Close DART, and exit with error code!
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218 // Free buffer descriptions
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219 { int j;
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220 for (j=0; j<i; j++) SDL_free((void *)(_this->hidden->pMixBuffers[j].ulUserParm));
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221 }
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222 // and cleanup
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223 mciSendCommand(iDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
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224 SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
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225 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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226 SDL_SetError("Error at internal buffer check");
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227 return(-1);
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228 }
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229 pBufferDesc->iBufferUsage = BUFFER_EMPTY;
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230 pBufferDesc->pSDLAudioDevice = _this;
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231
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232 _this->hidden->pMixBuffers[i].ulBufferLength = _this->hidden->BufferParms.ulBufferSize;
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233 _this->hidden->pMixBuffers[i].ulUserParm = (ULONG) pBufferDesc; // User parameter: Description of buffer
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234 _this->hidden->pMixBuffers[i].ulFlags = 0; // Some stuff should be flagged here for DART, like end of
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235 // audio data, but as we will continously send
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236 // audio data, there will be no end.:)
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237 SDL_memset(_this->hidden->pMixBuffers[i].pBuffer, iSilence, iBufSize);
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238 }
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239 }
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240 _this->hidden->iNextFreeBuffer = 0;
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241 _this->hidden->iLastPlayedBuf = -1;
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242 // Create event semaphore
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243 if (DosCreateEventSem(NULL, &(_this->hidden->hevAudioBufferPlayed), 0, FALSE)!=NO_ERROR)
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244 {
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245 // Could not create event semaphore!
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246 {
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247 int i;
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248 for (i=0; i<iNumBufs; i++) SDL_free((void *)(_this->hidden->pMixBuffers[i].ulUserParm));
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249 }
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250 mciSendCommand(iDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
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251 SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
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252 mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
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253 SDL_SetError("Could not create event semaphore");
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254 return(-1);
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255 }
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256
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257 // Store the new settings in global variables
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258 _this->hidden->iCurrDeviceOrd = iDeviceOrd;
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259 _this->hidden->iCurrFreq = iFreq;
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260 _this->hidden->iCurrBits = iBits;
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261 _this->hidden->iCurrChannels = iChannels;
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262 _this->hidden->iCurrNumBufs = iNumBufs;
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263 _this->hidden->iCurrBufSize = iBufSize;
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264
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265 return (0);
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266 }
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267
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268
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269
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270 void DART_ThreadInit(_THIS)
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271 {
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272 return;
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273 }
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274
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275 /* This function waits until it is possible to write a full sound buffer */
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276 void DART_WaitAudio(_THIS)
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277 {
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278 int i;
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279 pMixBufferDesc pBufDesc;
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280 ULONG ulPostCount;
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281
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282 DosResetEventSem(_this->hidden->hevAudioBufferPlayed, &ulPostCount);
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283 // If there is already an empty buffer, then return now!
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284 for (i=0; i<_this->hidden->iCurrNumBufs; i++)
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285 {
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286 pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[i].ulUserParm;
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287 if (pBufDesc->iBufferUsage == BUFFER_EMPTY)
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288 return;
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289 }
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290 // If there is no empty buffer, wait for one to be empty!
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291 DosWaitEventSem(_this->hidden->hevAudioBufferPlayed, 1000); // Wait max 1 sec!!! Important!
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292 return;
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293 }
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294
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295 void DART_PlayAudio(_THIS)
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296 {
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297 int iFreeBuf = _this->hidden->iNextFreeBuffer;
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298 pMixBufferDesc pBufDesc;
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299
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300 pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].ulUserParm;
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diff changeset
301 pBufDesc->iBufferUsage = BUFFER_USED;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 // Send it to DART to be queued
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parents:
diff changeset
303 _this->hidden->MixSetupParms.pmixWrite(_this->hidden->MixSetupParms.ulMixHandle,
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 &(_this->hidden->pMixBuffers[iFreeBuf]), 1);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 _this->hidden->iLastPlayedBuf = iFreeBuf;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307 iFreeBuf = (iFreeBuf+1) % _this->hidden->iCurrNumBufs;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 _this->hidden->iNextFreeBuffer = iFreeBuf;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 }
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311 Uint8 *DART_GetAudioBuf(_THIS)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
313 int iFreeBuf;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 Uint8 *pResult;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 pMixBufferDesc pBufDesc;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
316
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 if (_this)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318 {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 if (_this->hidden)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 iFreeBuf = _this->hidden->iNextFreeBuffer;
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parents:
diff changeset
322 pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].ulUserParm;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
323
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
324 if (pBufDesc)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325 {
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
326 if (pBufDesc->iBufferUsage == BUFFER_EMPTY)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327 {
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parents:
diff changeset
328 pResult = _this->hidden->pMixBuffers[iFreeBuf].pBuffer;
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parents:
diff changeset
329 return pResult;
173c063d4f55 OS/2 port!
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parents:
diff changeset
330 }
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331 } else
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parents:
diff changeset
332 printf("[DART_GetAudioBuf] : ERROR! pBufDesc = %p\n", pBufDesc);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333 } else
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parents:
diff changeset
334 printf("[DART_GetAudioBuf] : ERROR! _this->hidden = %p\n", _this->hidden);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 } else
173c063d4f55 OS/2 port!
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parents:
diff changeset
336 printf("[DART_GetAudioBuf] : ERROR! _this = %p\n", _this);
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parents:
diff changeset
337 return NULL;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
338 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
339
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
340 void DART_WaitDone(_THIS)
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parents:
diff changeset
341 {
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diff changeset
342 pMixBufferDesc pBufDesc;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 ULONG ulPostCount;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 APIRET rc;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345
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parents:
diff changeset
346 pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[_this->hidden->iLastPlayedBuf].ulUserParm;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347 rc = NO_ERROR;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348 while ((pBufDesc->iBufferUsage != BUFFER_EMPTY) && (rc==NO_ERROR))
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 {
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parents:
diff changeset
350 DosResetEventSem(_this->hidden->hevAudioBufferPlayed, &ulPostCount);
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parents:
diff changeset
351 rc = DosWaitEventSem(_this->hidden->hevAudioBufferPlayed, 1000); // 1 sec timeout! Important!
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 }
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 void DART_CloseAudio(_THIS)
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 MCI_GENERIC_PARMS GenericParms;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 int rc;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360 // Stop DART playback
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_STOP, MCI_WAIT, &GenericParms, 0);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 if (rc!=MCIERR_SUCCESS)
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 #ifdef SFX_DEBUG_BUILD
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parents:
diff changeset
365 printf("Could not stop DART playback!\n");
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 fflush(stdout);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 #endif
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 }
173c063d4f55 OS/2 port!
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parents:
diff changeset
369
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 // Close event semaphore
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 DosCloseEventSem(_this->hidden->hevAudioBufferPlayed);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
372
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 // Free memory of buffer descriptions
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 int i;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
376 for (i=0; i<_this->hidden->iCurrNumBufs; i++) SDL_free((void *)(_this->hidden->pMixBuffers[i].ulUserParm));
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 // Deallocate buffers
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382 // Free bufferlist
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
383 SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 // Close dart
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386 rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_CLOSE, MCI_WAIT, &(GenericParms), 0);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 /* Audio driver bootstrap functions */
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391 int Audio_Available(void)
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
393 return(1);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
396 void Audio_DeleteDevice(SDL_AudioDevice *device)
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397 {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
398 SDL_free(device->hidden);
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
399 SDL_free(device);
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
400 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402 SDL_AudioDevice *Audio_CreateDevice(int devindex)
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
403 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
404 SDL_AudioDevice *this;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
405
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
406 /* Initialize all variables that we clean on shutdown */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
407 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
408 if ( this )
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
409 {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
410 SDL_memset(this, 0, (sizeof *this));
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
411 this->hidden = (struct SDL_PrivateAudioData *)
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
412 SDL_malloc((sizeof *this->hidden));
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
413 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
414 if ( (this == NULL) || (this->hidden == NULL) )
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
415 {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
416 SDL_OutOfMemory();
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
417 if ( this )
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
418 SDL_free(this);
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
419 return(0);
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
420 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
421 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
1190
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
422
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
423 /* Set the function pointers */
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
424 this->OpenAudio = DART_OpenAudio;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
425 this->ThreadInit = DART_ThreadInit;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
426 this->WaitAudio = DART_WaitAudio;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
427 this->PlayAudio = DART_PlayAudio;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
428 this->GetAudioBuf = DART_GetAudioBuf;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
429 this->WaitDone = DART_WaitDone;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
430 this->CloseAudio = DART_CloseAudio;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
431
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
432 this->free = Audio_DeleteDevice;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
433
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
434 return this;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
435 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
436
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
437 AudioBootStrap DART_bootstrap = {
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
438 "dart", "OS/2 Direct Audio RouTines (DART)",
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
439 Audio_Available, Audio_CreateDevice
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
440 };
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
441