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annotate src/audio/ums/SDL_umsaudio.c @ 1713:3e66ed1690e4 SDL-1.3

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author Sam Lantinga <slouken@libsdl.org>
date Mon, 26 Jun 2006 14:29:50 +0000
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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 Carsten Griwodz
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20 griff@kom.tu-darmstadt.de
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21
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22 based on linux/SDL_dspaudio.c by Sam Lantinga
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23 */
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24 #include "SDL_config.h"
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25
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26 /* Allow access to a raw mixing buffer */
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27
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28 #include <errno.h>
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29 #include <unistd.h>
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30 #include <fcntl.h>
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31 #include <sys/types.h>
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32 #include <sys/time.h>
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33 #include <sys/ioctl.h>
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34 #include <sys/stat.h>
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35 #include <sys/mman.h>
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36
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37 #include "SDL_audio.h"
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38 #include "../SDL_audio_c.h"
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39 #include "../SDL_audiodev_c.h"
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40 #include "SDL_umsaudio.h"
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41
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42 /* The tag name used by UMS audio */
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43 #define UMS_DRIVER_NAME "ums"
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44
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45 #define DEBUG_AUDIO 1
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46
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47 /* Audio driver functions */
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48 static int UMS_OpenAudio(_THIS, SDL_AudioSpec * spec);
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49 static void UMS_PlayAudio(_THIS);
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50 static Uint8 *UMS_GetAudioBuf(_THIS);
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51 static void UMS_CloseAudio(_THIS);
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52
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53 static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode,
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54 long flags);
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55 static UMSAudioDevice_ReturnCode UADClose(_THIS);
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56 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long *bits);
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57 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits);
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58 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate,
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59 long *set_rate);
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60 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order);
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61 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt);
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62 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt);
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63 static UMSAudioDevice_ReturnCode UADInitialize(_THIS);
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64 static UMSAudioDevice_ReturnCode UADStart(_THIS);
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65 static UMSAudioDevice_ReturnCode UADStop(_THIS);
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66 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS,
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67 UMSAudioTypes_TimeFormat
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68 fmt);
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69 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long *buff_size);
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70 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long *buff_size);
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71 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long *buff_size);
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72 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes,
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73 long *bytes_ret);
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74 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume);
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75 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance);
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76 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels);
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77 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block);
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78 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output,
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79 long *left_gain,
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80 long *right_gain);
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81 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer * buff,
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82 long samples,
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83 long *samples_written);
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84
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85 /* Audio driver bootstrap functions */
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86 static int
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87 Audio_Available(void)
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88 {
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89 return 1;
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90 }
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91
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92 static void
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93 Audio_DeleteDevice(_THIS)
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94 {
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95 if (this->hidden->playbuf._buffer)
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96 SDL_free(this->hidden->playbuf._buffer);
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97 if (this->hidden->fillbuf._buffer)
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98 SDL_free(this->hidden->fillbuf._buffer);
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99 _somFree(this->hidden->umsdev);
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100 SDL_free(this->hidden);
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101 SDL_free(this);
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102 }
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103
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104 static SDL_AudioDevice *
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105 Audio_CreateDevice(int devindex)
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106 {
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107 SDL_AudioDevice *this;
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108
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109 /*
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110 * Allocate and initialize management storage and private management
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111 * storage for this SDL-using library.
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112 */
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113 this = (SDL_AudioDevice *) SDL_malloc(sizeof(SDL_AudioDevice));
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114 if (this) {
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115 SDL_memset(this, 0, (sizeof *this));
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116 this->hidden = (struct SDL_PrivateAudioData *)
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117 SDL_malloc((sizeof *this->hidden));
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118 }
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119 if ((this == NULL) || (this->hidden == NULL)) {
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120 SDL_OutOfMemory();
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121 if (this) {
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122 SDL_free(this);
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123 }
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124 return (0);
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125 }
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126 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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127 #ifdef DEBUG_AUDIO
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128 fprintf(stderr, "Creating UMS Audio device\n");
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129 #endif
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130
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131 /*
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132 * Calls for UMS env initialization and audio object construction.
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133 */
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134 this->hidden->ev = somGetGlobalEnvironment();
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135 this->hidden->umsdev = UMSAudioDeviceNew();
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136
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137 /*
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138 * Set the function pointers.
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139 */
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140 this->OpenAudio = UMS_OpenAudio;
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141 this->WaitAudio = NULL; /* we do blocking output */
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142 this->PlayAudio = UMS_PlayAudio;
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143 this->GetAudioBuf = UMS_GetAudioBuf;
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144 this->CloseAudio = UMS_CloseAudio;
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145 this->free = Audio_DeleteDevice;
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146
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147 #ifdef DEBUG_AUDIO
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148 fprintf(stderr, "done\n");
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149 #endif
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150 return this;
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151 }
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152
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153 AudioBootStrap UMS_bootstrap = {
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154 UMS_DRIVER_NAME, "AUX UMS audio",
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155 Audio_Available, Audio_CreateDevice
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156 };
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157
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158 static Uint8 *
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159 UMS_GetAudioBuf(_THIS)
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160 {
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161 #ifdef DEBUG_AUDIO
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162 fprintf(stderr, "enter UMS_GetAudioBuf\n");
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163 #endif
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164 return this->hidden->fillbuf._buffer;
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165 /*
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166 long bufSize;
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167 UMSAudioDevice_ReturnCode rc;
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168
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169 rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes );
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170 rc = UADWriteBuffSize(this, bufSize );
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171 */
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172 }
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173
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174 static void
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175 UMS_CloseAudio(_THIS)
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176 {
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177 UMSAudioDevice_ReturnCode rc;
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178
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179 #ifdef DEBUG_AUDIO
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180 fprintf(stderr, "enter UMS_CloseAudio\n");
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181 #endif
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182 rc = UADPlayRemainingData(this, TRUE);
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183 rc = UADStop(this);
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184 rc = UADClose(this);
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185 }
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186
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187 static void
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188 UMS_PlayAudio(_THIS)
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189 {
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190 UMSAudioDevice_ReturnCode rc;
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191 long samplesToWrite;
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192 long samplesWritten;
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193 UMSAudioTypes_Buffer swpbuf;
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194
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195 #ifdef DEBUG_AUDIO
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196 fprintf(stderr, "enter UMS_PlayAudio\n");
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197 #endif
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198 samplesToWrite =
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199 this->hidden->playbuf._length / this->hidden->bytesPerSample;
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200 do {
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201 rc = UADWrite(this, &this->hidden->playbuf,
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202 samplesToWrite, &samplesWritten);
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203 samplesToWrite -= samplesWritten;
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204
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205 /* rc values: UMSAudioDevice_Success
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206 * UMSAudioDevice_Failure
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207 * UMSAudioDevice_Preempted
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208 * UMSAudioDevice_Interrupted
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209 * UMSAudioDevice_DeviceError
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210 */
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211 if (rc == UMSAudioDevice_DeviceError) {
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212 #ifdef DEBUG_AUDIO
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213 fprintf(stderr, "Returning from PlayAudio with devices error\n");
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214 #endif
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215 return;
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216 }
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217 }
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218 while (samplesToWrite > 0);
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219
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220 SDL_LockAudio();
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221 SDL_memcpy(&swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer));
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222 SDL_memcpy(&this->hidden->playbuf, &this->hidden->fillbuf,
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223 sizeof(UMSAudioTypes_Buffer));
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224 SDL_memcpy(&this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer));
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225 SDL_UnlockAudio();
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226
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227 #ifdef DEBUG_AUDIO
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228 fprintf(stderr, "Wrote audio data and swapped buffer\n");
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229 #endif
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230 }
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231
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232 #if 0
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233 // /* Set the DSP frequency */
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234 // value = spec->freq;
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235 // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) {
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236 // SDL_SetError("Couldn't set audio frequency");
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237 // return(-1);
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238 // }
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239 // spec->freq = value;
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240 #endif
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241
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242 static int
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243 UMS_OpenAudio(_THIS, SDL_AudioSpec * spec)
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244 {
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245 char *audiodev = "/dev/paud0";
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246 long lgain;
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247 long rgain;
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248 long outRate;
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249 long outBufSize;
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250 long bitsPerSample;
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251 long samplesPerSec;
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252 long success;
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253 Uint16 test_format;
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254 int frag_spec;
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255 UMSAudioDevice_ReturnCode rc;
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256
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257 #ifdef DEBUG_AUDIO
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258 fprintf(stderr, "enter UMS_OpenAudio\n");
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259 #endif
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260 rc = UADOpen(this, audiodev, "PLAY", UMSAudioDevice_BlockingIO);
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261 if (rc != UMSAudioDevice_Success) {
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262 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
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263 return -1;
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264 }
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265
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266 rc = UADSetAudioFormatType(this, "PCM");
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267
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268 success = 0;
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269 test_format = SDL_FirstAudioFormat(spec->format);
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270 do {
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271 #ifdef DEBUG_AUDIO
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272 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
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273 #endif
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274 switch (test_format) {
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275 case AUDIO_U8:
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276 /* from the mac code: better ? */
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277 /* sample_bits = spec->size / spec->samples / spec->channels * 8; */
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278 success = 1;
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279 bitsPerSample = 8;
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280 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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281 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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282 rc = UADSetNumberFormat(this, "UNSIGNED");
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283 break;
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284 case AUDIO_S8:
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285 success = 1;
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286 bitsPerSample = 8;
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287 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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288 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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289 rc = UADSetNumberFormat(this, "SIGNED");
0
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290 break;
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291 case AUDIO_S16LSB:
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292 success = 1;
0
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293 bitsPerSample = 16;
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294 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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295 rc = UADSetByteOrder(this, "LSB");
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296 rc = UADSetNumberFormat(this, "SIGNED");
0
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297 break;
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298 case AUDIO_S16MSB:
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299 success = 1;
0
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300 bitsPerSample = 16;
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301 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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302 rc = UADSetByteOrder(this, "MSB");
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303 rc = UADSetNumberFormat(this, "SIGNED");
0
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304 break;
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305 case AUDIO_U16LSB:
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306 success = 1;
0
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307 bitsPerSample = 16;
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308 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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309 rc = UADSetByteOrder(this, "LSB");
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310 rc = UADSetNumberFormat(this, "UNSIGNED");
0
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311 break;
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312 case AUDIO_U16MSB:
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313 success = 1;
0
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314 bitsPerSample = 16;
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315 rc = UADSetSampleRate(this, spec->freq << 16, &outRate);
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316 rc = UADSetByteOrder(this, "MSB");
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317 rc = UADSetNumberFormat(this, "UNSIGNED");
0
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318 break;
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319 default:
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320 break;
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321 }
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322 if (!success) {
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323 test_format = SDL_NextAudioFormat();
0
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324 }
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325 }
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326 while (!success && test_format);
0
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327
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328 if (success == 0) {
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329 SDL_SetError("Couldn't find any hardware audio formats");
0
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330 return -1;
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331 }
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332
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333 spec->format = test_format;
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334
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335 for (frag_spec = 0; (0x01 << frag_spec) < spec->size; ++frag_spec);
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336 if ((0x01 << frag_spec) != spec->size) {
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337 SDL_SetError("Fragment size must be a power of two");
0
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338 return -1;
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diff changeset
339 }
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340 if (frag_spec > 2048)
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341 frag_spec = 2048;
0
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342
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343 this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels;
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344 samplesPerSec = this->hidden->bytesPerSample * outRate;
0
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345
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346 this->hidden->playbuf._length = 0;
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347 this->hidden->playbuf._maximum = spec->size;
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348 this->hidden->playbuf._buffer = (unsigned char *) SDL_malloc(spec->size);
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349 this->hidden->fillbuf._length = 0;
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350 this->hidden->fillbuf._maximum = spec->size;
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351 this->hidden->fillbuf._buffer = (unsigned char *) SDL_malloc(spec->size);
0
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352
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353 rc = UADSetBitsPerSample(this, bitsPerSample);
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354 rc = UADSetDMABufferSize(this, frag_spec, &outBufSize);
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355 rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */
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356
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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357 lgain = 100; /*maximum left input gain */
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358 rgain = 100; /*maimum right input gain */
1668
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359 rc = UADEnableOutput(this, "LINE_OUT", &lgain, &rgain);
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diff changeset
360 rc = UADInitialize(this);
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diff changeset
361 rc = UADStart(this);
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362 rc = UADSetVolume(this, 100);
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363 rc = UADSetBalance(this, 0);
0
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diff changeset
364
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diff changeset
365 /* We're ready to rock and roll. :-) */
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diff changeset
366 return 0;
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parents:
diff changeset
367 }
1662
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diff changeset
368
0
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diff changeset
369
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diff changeset
370 static UMSAudioDevice_ReturnCode
1668
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diff changeset
371 UADGetBitsPerSample(_THIS, long *bits)
0
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parents:
diff changeset
372 {
1668
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diff changeset
373 return UMSAudioDevice_get_bits_per_sample(this->hidden->umsdev,
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diff changeset
374 this->hidden->ev, bits);
0
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parents:
diff changeset
375 }
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parents:
diff changeset
376
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diff changeset
377 static UMSAudioDevice_ReturnCode
1668
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diff changeset
378 UADSetBitsPerSample(_THIS, long bits)
0
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parents:
diff changeset
379 {
1668
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diff changeset
380 return UMSAudioDevice_set_bits_per_sample(this->hidden->umsdev,
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diff changeset
381 this->hidden->ev, bits);
0
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parents:
diff changeset
382 }
74212992fb08 Initial revision
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parents:
diff changeset
383
1662
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diff changeset
384 static UMSAudioDevice_ReturnCode
1668
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diff changeset
385 UADSetSampleRate(_THIS, long rate, long *set_rate)
0
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parents:
diff changeset
386 {
74212992fb08 Initial revision
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parents:
diff changeset
387 /* from the mac code: sample rate = spec->freq << 16; */
1668
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parents: 1662
diff changeset
388 return UMSAudioDevice_set_sample_rate(this->hidden->umsdev,
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diff changeset
389 this->hidden->ev, rate, set_rate);
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
390 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
391
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
392 static UMSAudioDevice_ReturnCode
1668
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diff changeset
393 UADSetByteOrder(_THIS, string byte_order)
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
394 {
1668
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diff changeset
395 return UMSAudioDevice_set_byte_order(this->hidden->umsdev,
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parents: 1662
diff changeset
396 this->hidden->ev, byte_order);
0
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parents:
diff changeset
397 }
74212992fb08 Initial revision
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parents:
diff changeset
398
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
399 static UMSAudioDevice_ReturnCode
1668
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diff changeset
400 UADSetAudioFormatType(_THIS, string fmt)
0
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parents:
diff changeset
401 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
402 /* possible PCM, A_LAW or MU_LAW */
1668
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diff changeset
403 return UMSAudioDevice_set_audio_format_type(this->hidden->umsdev,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
404 this->hidden->ev, fmt);
0
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parents:
diff changeset
405 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
407 static UMSAudioDevice_ReturnCode
1668
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diff changeset
408 UADSetNumberFormat(_THIS, string fmt)
0
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parents:
diff changeset
409 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
411 return UMSAudioDevice_set_number_format(this->hidden->umsdev,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
412 this->hidden->ev, fmt);
0
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parents:
diff changeset
413 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
415 static UMSAudioDevice_ReturnCode
1668
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parents: 1662
diff changeset
416 UADInitialize(_THIS)
0
74212992fb08 Initial revision
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parents:
diff changeset
417 {
1668
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diff changeset
418 return UMSAudioDevice_initialize(this->hidden->umsdev, this->hidden->ev);
0
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parents:
diff changeset
419 }
74212992fb08 Initial revision
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parents:
diff changeset
420
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
421 static UMSAudioDevice_ReturnCode
1668
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parents: 1662
diff changeset
422 UADStart(_THIS)
0
74212992fb08 Initial revision
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parents:
diff changeset
423 {
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
424 return UMSAudioDevice_start(this->hidden->umsdev, this->hidden->ev);
0
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parents:
diff changeset
425 }
74212992fb08 Initial revision
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parents:
diff changeset
426
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
427 static UMSAudioDevice_ReturnCode
1668
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parents: 1662
diff changeset
428 UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt)
0
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429 {
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diff changeset
430 /*
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431 * Switches the time format to the new format, immediately.
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432 * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples
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433 */
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434 return UMSAudioDevice_set_time_format(this->hidden->umsdev,
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435 this->hidden->ev, fmt);
0
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436 }
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437
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438 static UMSAudioDevice_ReturnCode
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439 UADWriteBuffSize(_THIS, long *buff_size)
0
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440 {
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441 /*
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442 * returns write buffer size in the current time format
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diff changeset
443 */
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444 return UMSAudioDevice_write_buff_size(this->hidden->umsdev,
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445 this->hidden->ev, buff_size);
0
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446 }
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447
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448 static UMSAudioDevice_ReturnCode
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449 UADWriteBuffRemain(_THIS, long *buff_size)
0
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450 {
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diff changeset
451 /*
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452 * returns amount of available space in the write buffer
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453 * in the current time format
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454 */
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455 return UMSAudioDevice_write_buff_remain(this->hidden->umsdev,
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456 this->hidden->ev, buff_size);
0
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457 }
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458
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459 static UMSAudioDevice_ReturnCode
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460 UADWriteBuffUsed(_THIS, long *buff_size)
0
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diff changeset
461 {
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462 /*
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diff changeset
463 * returns amount of filled space in the write buffer
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diff changeset
464 * in the current time format
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465 */
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466 return UMSAudioDevice_write_buff_used(this->hidden->umsdev,
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467 this->hidden->ev, buff_size);
0
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468 }
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469
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470 static UMSAudioDevice_ReturnCode
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471 UADSetDMABufferSize(_THIS, long bytes, long *bytes_ret)
0
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diff changeset
472 {
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473 /*
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474 * Request a new DMA buffer size, maximum requested size 2048.
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475 * Takes effect with next initialize() call.
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476 * Devices may or may not support DMA.
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diff changeset
477 */
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478 return UMSAudioDevice_set_DMA_buffer_size(this->hidden->umsdev,
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479 this->hidden->ev,
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480 bytes, bytes_ret);
0
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481 }
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diff changeset
482
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483 static UMSAudioDevice_ReturnCode
1668
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484 UADSetVolume(_THIS, long volume)
0
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parents:
diff changeset
485 {
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diff changeset
486 /*
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parents:
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487 * Set the volume.
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diff changeset
488 * Takes effect immediately.
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489 */
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490 return UMSAudioDevice_set_volume(this->hidden->umsdev,
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491 this->hidden->ev, volume);
0
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492 }
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diff changeset
493
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494 static UMSAudioDevice_ReturnCode
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495 UADSetBalance(_THIS, long balance)
0
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496 {
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diff changeset
497 /*
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diff changeset
498 * Set the balance.
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diff changeset
499 * Takes effect immediately.
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diff changeset
500 */
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501 return UMSAudioDevice_set_balance(this->hidden->umsdev,
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502 this->hidden->ev, balance);
0
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503 }
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diff changeset
504
1662
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505 static UMSAudioDevice_ReturnCode
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506 UADSetChannels(_THIS, long channels)
0
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parents:
diff changeset
507 {
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parents:
diff changeset
508 /*
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parents:
diff changeset
509 * Set mono or stereo.
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parents:
diff changeset
510 * Takes effect with next initialize() call.
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diff changeset
511 */
1662
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512 if (channels != 1)
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513 channels = 2;
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514 return UMSAudioDevice_set_number_of_channels(this->hidden->umsdev,
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515 this->hidden->ev, channels);
0
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diff changeset
516 }
74212992fb08 Initial revision
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diff changeset
517
1662
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518 static UMSAudioDevice_ReturnCode
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519 UADOpen(_THIS, string device, string mode, long flags)
0
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parents:
diff changeset
520 {
1668
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diff changeset
521 return UMSAudioDevice_open(this->hidden->umsdev,
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522 this->hidden->ev, device, mode, flags);
0
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diff changeset
523 }
74212992fb08 Initial revision
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diff changeset
524
1662
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525 static UMSAudioDevice_ReturnCode
1668
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diff changeset
526 UADWrite(_THIS, UMSAudioTypes_Buffer * buff,
4da1ee79c9af more tweaking indent options
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diff changeset
527 long samples, long *samples_written)
0
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parents:
diff changeset
528 {
1668
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diff changeset
529 return UMSAudioDevice_write(this->hidden->umsdev,
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parents: 1662
diff changeset
530 this->hidden->ev,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
531 buff, samples, samples_written);
0
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parents:
diff changeset
532 }
74212992fb08 Initial revision
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parents:
diff changeset
533
1662
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diff changeset
534 static UMSAudioDevice_ReturnCode
1668
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diff changeset
535 UADPlayRemainingData(_THIS, boolean block)
0
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parents:
diff changeset
536 {
1668
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diff changeset
537 return UMSAudioDevice_play_remaining_data(this->hidden->umsdev,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
538 this->hidden->ev, block);
0
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parents:
diff changeset
539 }
74212992fb08 Initial revision
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parents:
diff changeset
540
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
541 static UMSAudioDevice_ReturnCode
1668
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diff changeset
542 UADStop(_THIS)
0
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parents:
diff changeset
543 {
1668
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544 return UMSAudioDevice_stop(this->hidden->umsdev, this->hidden->ev);
0
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parents:
diff changeset
545 }
74212992fb08 Initial revision
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parents:
diff changeset
546
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
547 static UMSAudioDevice_ReturnCode
1668
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diff changeset
548 UADClose(_THIS)
0
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parents:
diff changeset
549 {
1668
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550 return UMSAudioDevice_close(this->hidden->umsdev, this->hidden->ev);
0
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parents:
diff changeset
551 }
74212992fb08 Initial revision
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diff changeset
552
1662
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diff changeset
553 static UMSAudioDevice_ReturnCode
1668
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554 UADEnableOutput(_THIS, string output, long *left_gain, long *right_gain)
0
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parents:
diff changeset
555 {
1668
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diff changeset
556 return UMSAudioDevice_enable_output(this->hidden->umsdev,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
557 this->hidden->ev,
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diff changeset
558 output, left_gain, right_gain);
0
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parents:
diff changeset
559 }
74212992fb08 Initial revision
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parents:
diff changeset
560
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1402
diff changeset
561 /* vi: set ts=4 sw=4 expandtab: */