annotate src/audio/ums/SDL_umsaudio.c @ 1358:c71e05b4dc2e

More header massaging... works great on Windows. ;-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 10 Feb 2006 06:48:43 +0000
parents 604d73db6802
children 19418e4422cb
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 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
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25 /* Allow access to a raw mixing buffer */
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26
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27 #include <errno.h>
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28 #include <unistd.h>
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29 #include <fcntl.h>
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30 #include <sys/types.h>
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31 #include <sys/time.h>
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32 #include <sys/ioctl.h>
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33 #include <sys/stat.h>
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34 #include <sys/mman.h>
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35
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36 #include "SDL_audio.h"
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37 #include "SDL_audio_c.h"
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38 #include "SDL_audiodev_c.h"
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39 #include "SDL_umsaudio.h"
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40
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41 /* The tag name used by UMS audio */
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42 #define UMS_DRIVER_NAME "ums"
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43
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44 #define DEBUG_AUDIO 1
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45
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46 /* Audio driver functions */
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47 static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec);
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48 static void UMS_PlayAudio(_THIS);
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49 static Uint8 *UMS_GetAudioBuf(_THIS);
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50 static void UMS_CloseAudio(_THIS);
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51
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52 static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags);
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53 static UMSAudioDevice_ReturnCode UADClose(_THIS);
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54 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits);
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55 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits);
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56 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate);
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57 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order);
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58 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt);
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59 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt);
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60 static UMSAudioDevice_ReturnCode UADInitialize(_THIS);
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61 static UMSAudioDevice_ReturnCode UADStart(_THIS);
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62 static UMSAudioDevice_ReturnCode UADStop(_THIS);
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63 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt );
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64 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size );
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65 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size );
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66 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size );
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67 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret );
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68 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume );
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69 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance );
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70 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels );
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71 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block );
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72 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain);
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73 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, long samples, long* samples_written);
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74
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75 /* Audio driver bootstrap functions */
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76 static int Audio_Available(void)
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77 {
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78 return 1;
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79 }
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80
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81 static void Audio_DeleteDevice(_THIS)
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82 {
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83 if(this->hidden->playbuf._buffer) SDL_free(this->hidden->playbuf._buffer);
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84 if(this->hidden->fillbuf._buffer) SDL_free(this->hidden->fillbuf._buffer);
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85 _somFree( this->hidden->umsdev );
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86 SDL_free(this->hidden);
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87 SDL_free(this);
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88 }
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89
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90 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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91 {
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92 SDL_AudioDevice *this;
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93
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94 /*
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95 * Allocate and initialize management storage and private management
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96 * storage for this SDL-using library.
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97 */
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98 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
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99 if ( this ) {
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100 SDL_memset(this, 0, (sizeof *this));
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101 this->hidden = (struct SDL_PrivateAudioData *)SDL_malloc((sizeof *this->hidden));
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102 }
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103 if ( (this == NULL) || (this->hidden == NULL) ) {
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104 SDL_OutOfMemory();
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105 if ( this ) {
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106 SDL_free(this);
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107 }
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108 return(0);
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109 }
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110 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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111 #ifdef DEBUG_AUDIO
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112 fprintf(stderr, "Creating UMS Audio device\n");
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113 #endif
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114
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115 /*
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116 * Calls for UMS env initialization and audio object construction.
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117 */
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118 this->hidden->ev = somGetGlobalEnvironment();
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119 this->hidden->umsdev = UMSAudioDeviceNew();
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120
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121 /*
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122 * Set the function pointers.
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123 */
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124 this->OpenAudio = UMS_OpenAudio;
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125 this->WaitAudio = NULL; /* we do blocking output */
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126 this->PlayAudio = UMS_PlayAudio;
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127 this->GetAudioBuf = UMS_GetAudioBuf;
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128 this->CloseAudio = UMS_CloseAudio;
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129 this->free = Audio_DeleteDevice;
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130
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131 #ifdef DEBUG_AUDIO
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132 fprintf(stderr, "done\n");
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133 #endif
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134 return this;
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135 }
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136
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137 AudioBootStrap UMS_bootstrap = {
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138 UMS_DRIVER_NAME, "AUX UMS audio",
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139 Audio_Available, Audio_CreateDevice
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140 };
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141
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142 static Uint8 *UMS_GetAudioBuf(_THIS)
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143 {
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144 #ifdef DEBUG_AUDIO
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145 fprintf(stderr, "enter UMS_GetAudioBuf\n");
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146 #endif
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147 return this->hidden->fillbuf._buffer;
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148 /*
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149 long bufSize;
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150 UMSAudioDevice_ReturnCode rc;
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151
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152 rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes );
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153 rc = UADWriteBuffSize(this, bufSize );
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154 */
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155 }
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156
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157 static void UMS_CloseAudio(_THIS)
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158 {
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159 UMSAudioDevice_ReturnCode rc;
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160
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161 #ifdef DEBUG_AUDIO
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162 fprintf(stderr, "enter UMS_CloseAudio\n");
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163 #endif
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164 rc = UADPlayRemainingData(this, TRUE);
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165 rc = UADStop(this);
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166 rc = UADClose(this);
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167 }
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168
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169 static void UMS_PlayAudio(_THIS)
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170 {
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171 UMSAudioDevice_ReturnCode rc;
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172 long samplesToWrite;
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173 long samplesWritten;
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174 UMSAudioTypes_Buffer swpbuf;
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diff changeset
175
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176 #ifdef DEBUG_AUDIO
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177 fprintf(stderr, "enter UMS_PlayAudio\n");
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178 #endif
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179 samplesToWrite = this->hidden->playbuf._length/this->hidden->bytesPerSample;
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180 do
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181 {
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182 rc = UADWrite(this, &this->hidden->playbuf,
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183 samplesToWrite,
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184 &samplesWritten );
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185 samplesToWrite -= samplesWritten;
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186
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187 /* rc values: UMSAudioDevice_Success
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188 * UMSAudioDevice_Failure
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189 * UMSAudioDevice_Preempted
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190 * UMSAudioDevice_Interrupted
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191 * UMSAudioDevice_DeviceError
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192 */
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193 if ( rc == UMSAudioDevice_DeviceError ) {
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194 #ifdef DEBUG_AUDIO
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195 fprintf(stderr, "Returning from PlayAudio with devices error\n");
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196 #endif
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197 return;
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198 }
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199 }
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200 while(samplesToWrite>0);
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201
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202 SDL_LockAudio();
1336
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parents: 1312
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203 SDL_memcpy( &swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer) );
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204 SDL_memcpy( &this->hidden->playbuf, &this->hidden->fillbuf, sizeof(UMSAudioTypes_Buffer) );
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205 SDL_memcpy( &this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer) );
0
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206 SDL_UnlockAudio();
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207
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208 #ifdef DEBUG_AUDIO
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209 fprintf(stderr, "Wrote audio data and swapped buffer\n");
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210 #endif
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211 }
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212
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213 #if 0
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214 // /* Set the DSP frequency */
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215 // value = spec->freq;
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216 // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) {
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217 // SDL_SetError("Couldn't set audio frequency");
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218 // return(-1);
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diff changeset
219 // }
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220 // spec->freq = value;
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diff changeset
221 #endif
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diff changeset
222
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223 static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec)
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224 {
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225 char* audiodev = "/dev/paud0";
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226 long lgain;
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227 long rgain;
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228 long outRate;
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229 long outBufSize;
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230 long bitsPerSample;
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231 long samplesPerSec;
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232 long success;
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233 Uint16 test_format;
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diff changeset
234 int frag_spec;
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235 UMSAudioDevice_ReturnCode rc;
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parents:
diff changeset
236
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237 #ifdef DEBUG_AUDIO
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238 fprintf(stderr, "enter UMS_OpenAudio\n");
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diff changeset
239 #endif
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240 rc = UADOpen(this, audiodev,"PLAY", UMSAudioDevice_BlockingIO);
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diff changeset
241 if ( rc != UMSAudioDevice_Success ) {
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242 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
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diff changeset
243 return -1;
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parents:
diff changeset
244 }
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diff changeset
245
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246 rc = UADSetAudioFormatType(this, "PCM");
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diff changeset
247
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248 success = 0;
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249 test_format = SDL_FirstAudioFormat(spec->format);
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250 do
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diff changeset
251 {
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diff changeset
252 #ifdef DEBUG_AUDIO
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253 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
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diff changeset
254 #endif
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diff changeset
255 switch ( test_format )
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diff changeset
256 {
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diff changeset
257 case AUDIO_U8:
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parents:
diff changeset
258 /* from the mac code: better ? */
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parents:
diff changeset
259 /* sample_bits = spec->size / spec->samples / spec->channels * 8; */
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diff changeset
260 success = 1;
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diff changeset
261 bitsPerSample = 8;
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diff changeset
262 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
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diff changeset
263 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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diff changeset
264 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
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diff changeset
265 break;
74212992fb08 Initial revision
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parents:
diff changeset
266 case AUDIO_S8:
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diff changeset
267 success = 1;
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parents:
diff changeset
268 bitsPerSample = 8;
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diff changeset
269 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
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diff changeset
270 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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diff changeset
271 rc = UADSetNumberFormat(this, "SIGNED");
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parents:
diff changeset
272 break;
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parents:
diff changeset
273 case AUDIO_S16LSB:
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parents:
diff changeset
274 success = 1;
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parents:
diff changeset
275 bitsPerSample = 16;
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parents:
diff changeset
276 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
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parents:
diff changeset
277 rc = UADSetByteOrder(this, "LSB");
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parents:
diff changeset
278 rc = UADSetNumberFormat(this, "SIGNED");
74212992fb08 Initial revision
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parents:
diff changeset
279 break;
74212992fb08 Initial revision
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parents:
diff changeset
280 case AUDIO_S16MSB:
74212992fb08 Initial revision
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parents:
diff changeset
281 success = 1;
74212992fb08 Initial revision
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parents:
diff changeset
282 bitsPerSample = 16;
74212992fb08 Initial revision
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parents:
diff changeset
283 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
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parents:
diff changeset
284 rc = UADSetByteOrder(this, "MSB");
74212992fb08 Initial revision
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parents:
diff changeset
285 rc = UADSetNumberFormat(this, "SIGNED");
74212992fb08 Initial revision
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parents:
diff changeset
286 break;
74212992fb08 Initial revision
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parents:
diff changeset
287 case AUDIO_U16LSB:
74212992fb08 Initial revision
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parents:
diff changeset
288 success = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 bitsPerSample = 16;
74212992fb08 Initial revision
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parents:
diff changeset
290 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
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parents:
diff changeset
291 rc = UADSetByteOrder(this, "LSB");
74212992fb08 Initial revision
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parents:
diff changeset
292 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 case AUDIO_U16MSB:
74212992fb08 Initial revision
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parents:
diff changeset
295 success = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 bitsPerSample = 16;
74212992fb08 Initial revision
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parents:
diff changeset
297 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
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parents:
diff changeset
298 rc = UADSetByteOrder(this, "MSB");
74212992fb08 Initial revision
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parents:
diff changeset
299 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 if ( ! success ) {
74212992fb08 Initial revision
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parents:
diff changeset
305 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 while ( ! success && test_format );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309
74212992fb08 Initial revision
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parents:
diff changeset
310 if ( success == 0 ) {
74212992fb08 Initial revision
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parents:
diff changeset
311 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision
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parents:
diff changeset
312 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314
74212992fb08 Initial revision
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parents:
diff changeset
315 spec->format = test_format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316
74212992fb08 Initial revision
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parents:
diff changeset
317 for ( frag_spec = 0; (0x01<<frag_spec) < spec->size; ++frag_spec );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 if ( (0x01<<frag_spec) != spec->size ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 SDL_SetError("Fragment size must be a power of two");
74212992fb08 Initial revision
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parents:
diff changeset
320 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 if ( frag_spec > 2048 ) frag_spec = 2048;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323
74212992fb08 Initial revision
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parents:
diff changeset
324 this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels;
74212992fb08 Initial revision
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parents:
diff changeset
325 samplesPerSec = this->hidden->bytesPerSample * outRate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 this->hidden->playbuf._length = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 this->hidden->playbuf._maximum = spec->size;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 1312
diff changeset
329 this->hidden->playbuf._buffer = (unsigned char*)SDL_malloc(spec->size);
0
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parents:
diff changeset
330 this->hidden->fillbuf._length = 0;
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diff changeset
331 this->hidden->fillbuf._maximum = spec->size;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 1312
diff changeset
332 this->hidden->fillbuf._buffer = (unsigned char*)SDL_malloc(spec->size);
0
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parents:
diff changeset
333
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parents:
diff changeset
334 rc = UADSetBitsPerSample(this, bitsPerSample );
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parents:
diff changeset
335 rc = UADSetDMABufferSize(this, frag_spec, &outBufSize );
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parents:
diff changeset
336 rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */
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parents:
diff changeset
337
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parents:
diff changeset
338 lgain = 100; /*maximum left input gain*/
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parents:
diff changeset
339 rgain = 100; /*maimum right input gain*/
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parents:
diff changeset
340 rc = UADEnableOutput(this, "LINE_OUT",&lgain,&rgain);
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parents:
diff changeset
341 rc = UADInitialize(this);
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parents:
diff changeset
342 rc = UADStart(this);
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parents:
diff changeset
343 rc = UADSetVolume(this, 100);
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parents:
diff changeset
344 rc = UADSetBalance(this, 0);
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parents:
diff changeset
345
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parents:
diff changeset
346 /* We're ready to rock and roll. :-) */
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parents:
diff changeset
347 return 0;
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parents:
diff changeset
348 }
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parents:
diff changeset
349
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parents:
diff changeset
350
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parents:
diff changeset
351 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits)
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parents:
diff changeset
352 {
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parents:
diff changeset
353 return UMSAudioDevice_get_bits_per_sample( this->hidden->umsdev,
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parents:
diff changeset
354 this->hidden->ev,
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parents:
diff changeset
355 bits );
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 }
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parents:
diff changeset
357
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parents:
diff changeset
358 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits)
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parents:
diff changeset
359 {
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parents:
diff changeset
360 return UMSAudioDevice_set_bits_per_sample( this->hidden->umsdev,
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parents:
diff changeset
361 this->hidden->ev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 bits );
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 }
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parents:
diff changeset
364
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parents:
diff changeset
365 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate)
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parents:
diff changeset
366 {
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parents:
diff changeset
367 /* from the mac code: sample rate = spec->freq << 16; */
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parents:
diff changeset
368 return UMSAudioDevice_set_sample_rate( this->hidden->umsdev,
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parents:
diff changeset
369 this->hidden->ev,
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parents:
diff changeset
370 rate,
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parents:
diff changeset
371 set_rate );
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parents:
diff changeset
372 }
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parents:
diff changeset
373
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parents:
diff changeset
374 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order)
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parents:
diff changeset
375 {
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parents:
diff changeset
376 return UMSAudioDevice_set_byte_order( this->hidden->umsdev,
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parents:
diff changeset
377 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 byte_order );
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380
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parents:
diff changeset
381 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt)
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parents:
diff changeset
382 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 /* possible PCM, A_LAW or MU_LAW */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 return UMSAudioDevice_set_audio_format_type( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */
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parents:
diff changeset
392 return UMSAudioDevice_set_number_format( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 static UMSAudioDevice_ReturnCode UADInitialize(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 return UMSAudioDevice_initialize( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 this->hidden->ev );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 static UMSAudioDevice_ReturnCode UADStart(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 return UMSAudioDevice_start( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 this->hidden->ev );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 * Switches the time format to the new format, immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 return UMSAudioDevice_set_time_format( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 * returns write buffer size in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 return UMSAudioDevice_write_buff_size( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 * returns amount of available space in the write buffer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 * in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 return UMSAudioDevice_write_buff_remain( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 * returns amount of filled space in the write buffer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 * in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 return UMSAudioDevice_write_buff_used( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 * Request a new DMA buffer size, maximum requested size 2048.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 * Takes effect with next initialize() call.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 * Devices may or may not support DMA.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 return UMSAudioDevice_set_DMA_buffer_size( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 bytes,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 bytes_ret );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 * Set the volume.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 * Takes effect immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 return UMSAudioDevice_set_volume( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 volume );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 * Set the balance.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 * Takes effect immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 return UMSAudioDevice_set_balance( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 balance );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 * Set mono or stereo.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 * Takes effect with next initialize() call.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 if ( channels != 1 ) channels = 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 return UMSAudioDevice_set_number_of_channels( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 channels );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags)
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500 {
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501 return UMSAudioDevice_open( this->hidden->umsdev,
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502 this->hidden->ev,
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503 device,
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504 mode,
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505 flags );
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506 }
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507
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508 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff,
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509 long samples,
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510 long* samples_written)
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511 {
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512 return UMSAudioDevice_write( this->hidden->umsdev,
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513 this->hidden->ev,
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514 buff,
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515 samples,
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516 samples_written );
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517 }
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518
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519 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block )
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520 {
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521 return UMSAudioDevice_play_remaining_data( this->hidden->umsdev,
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522 this->hidden->ev,
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523 block);
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524 }
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525
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526 static UMSAudioDevice_ReturnCode UADStop(_THIS)
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527 {
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528 return UMSAudioDevice_stop( this->hidden->umsdev,
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529 this->hidden->ev );
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530 }
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531
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532 static UMSAudioDevice_ReturnCode UADClose(_THIS)
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533 {
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534 return UMSAudioDevice_close( this->hidden->umsdev,
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535 this->hidden->ev );
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536 }
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537
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538 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain)
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539 {
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540 return UMSAudioDevice_enable_output( this->hidden->umsdev,
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541 this->hidden->ev,
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542 output,
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543 left_gain,
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544 right_gain );
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545 }
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546