annotate src/audio/ums/SDL_umsaudio.c @ 1402:d910939febfa

Use consistent identifiers for the various platforms we support. Make sure every source file includes SDL_config.h, so the proper system headers are chosen.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 21 Feb 2006 08:46:50 +0000
parents 19418e4422cb
children 782fd950bd46 c121d94672cb cf4744dbb1cf
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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, long flags);
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54 static UMSAudioDevice_ReturnCode UADClose(_THIS);
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55 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits);
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56 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits);
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57 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate);
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58 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order);
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59 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt);
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60 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt);
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61 static UMSAudioDevice_ReturnCode UADInitialize(_THIS);
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62 static UMSAudioDevice_ReturnCode UADStart(_THIS);
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63 static UMSAudioDevice_ReturnCode UADStop(_THIS);
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64 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt );
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65 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size );
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66 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size );
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67 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size );
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68 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret );
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69 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume );
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70 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance );
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71 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels );
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72 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block );
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73 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain);
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74 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff, long samples, long* samples_written);
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75
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76 /* Audio driver bootstrap functions */
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77 static int Audio_Available(void)
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78 {
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79 return 1;
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80 }
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81
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82 static void Audio_DeleteDevice(_THIS)
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83 {
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84 if(this->hidden->playbuf._buffer) SDL_free(this->hidden->playbuf._buffer);
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85 if(this->hidden->fillbuf._buffer) SDL_free(this->hidden->fillbuf._buffer);
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86 _somFree( this->hidden->umsdev );
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87 SDL_free(this->hidden);
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88 SDL_free(this);
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89 }
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90
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91 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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92 {
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93 SDL_AudioDevice *this;
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94
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95 /*
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96 * Allocate and initialize management storage and private management
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97 * storage for this SDL-using library.
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98 */
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99 this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
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100 if ( this ) {
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101 SDL_memset(this, 0, (sizeof *this));
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102 this->hidden = (struct SDL_PrivateAudioData *)SDL_malloc((sizeof *this->hidden));
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103 }
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104 if ( (this == NULL) || (this->hidden == NULL) ) {
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105 SDL_OutOfMemory();
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106 if ( this ) {
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107 SDL_free(this);
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108 }
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109 return(0);
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110 }
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111 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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112 #ifdef DEBUG_AUDIO
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113 fprintf(stderr, "Creating UMS Audio device\n");
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114 #endif
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115
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116 /*
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117 * Calls for UMS env initialization and audio object construction.
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118 */
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119 this->hidden->ev = somGetGlobalEnvironment();
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120 this->hidden->umsdev = UMSAudioDeviceNew();
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121
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122 /*
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123 * Set the function pointers.
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124 */
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125 this->OpenAudio = UMS_OpenAudio;
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126 this->WaitAudio = NULL; /* we do blocking output */
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127 this->PlayAudio = UMS_PlayAudio;
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128 this->GetAudioBuf = UMS_GetAudioBuf;
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129 this->CloseAudio = UMS_CloseAudio;
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130 this->free = Audio_DeleteDevice;
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131
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132 #ifdef DEBUG_AUDIO
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133 fprintf(stderr, "done\n");
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134 #endif
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135 return this;
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136 }
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137
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138 AudioBootStrap UMS_bootstrap = {
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139 UMS_DRIVER_NAME, "AUX UMS audio",
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140 Audio_Available, Audio_CreateDevice
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141 };
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142
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143 static Uint8 *UMS_GetAudioBuf(_THIS)
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144 {
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145 #ifdef DEBUG_AUDIO
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146 fprintf(stderr, "enter UMS_GetAudioBuf\n");
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147 #endif
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148 return this->hidden->fillbuf._buffer;
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149 /*
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150 long bufSize;
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151 UMSAudioDevice_ReturnCode rc;
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152
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153 rc = UADSetTimeFormat(this, UMSAudioTypes_Bytes );
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154 rc = UADWriteBuffSize(this, bufSize );
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155 */
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156 }
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157
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158 static void UMS_CloseAudio(_THIS)
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diff changeset
159 {
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160 UMSAudioDevice_ReturnCode rc;
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161
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162 #ifdef DEBUG_AUDIO
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163 fprintf(stderr, "enter UMS_CloseAudio\n");
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164 #endif
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165 rc = UADPlayRemainingData(this, TRUE);
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166 rc = UADStop(this);
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diff changeset
167 rc = UADClose(this);
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168 }
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169
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170 static void UMS_PlayAudio(_THIS)
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171 {
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172 UMSAudioDevice_ReturnCode rc;
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173 long samplesToWrite;
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174 long samplesWritten;
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175 UMSAudioTypes_Buffer swpbuf;
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diff changeset
176
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177 #ifdef DEBUG_AUDIO
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178 fprintf(stderr, "enter UMS_PlayAudio\n");
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179 #endif
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180 samplesToWrite = this->hidden->playbuf._length/this->hidden->bytesPerSample;
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181 do
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182 {
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183 rc = UADWrite(this, &this->hidden->playbuf,
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184 samplesToWrite,
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185 &samplesWritten );
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186 samplesToWrite -= samplesWritten;
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187
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188 /* rc values: UMSAudioDevice_Success
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189 * UMSAudioDevice_Failure
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190 * UMSAudioDevice_Preempted
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191 * UMSAudioDevice_Interrupted
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192 * UMSAudioDevice_DeviceError
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193 */
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194 if ( rc == UMSAudioDevice_DeviceError ) {
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195 #ifdef DEBUG_AUDIO
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196 fprintf(stderr, "Returning from PlayAudio with devices error\n");
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197 #endif
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198 return;
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199 }
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200 }
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201 while(samplesToWrite>0);
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202
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203 SDL_LockAudio();
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
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parents: 1312
diff changeset
204 SDL_memcpy( &swpbuf, &this->hidden->playbuf, sizeof(UMSAudioTypes_Buffer) );
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parents: 1312
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205 SDL_memcpy( &this->hidden->playbuf, &this->hidden->fillbuf, sizeof(UMSAudioTypes_Buffer) );
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parents: 1312
diff changeset
206 SDL_memcpy( &this->hidden->fillbuf, &swpbuf, sizeof(UMSAudioTypes_Buffer) );
0
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207 SDL_UnlockAudio();
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208
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209 #ifdef DEBUG_AUDIO
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210 fprintf(stderr, "Wrote audio data and swapped buffer\n");
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211 #endif
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212 }
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213
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214 #if 0
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215 // /* Set the DSP frequency */
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216 // value = spec->freq;
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217 // if ( ioctl(this->hidden->audio_fd, SOUND_PCM_WRITE_RATE, &value) < 0 ) {
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218 // SDL_SetError("Couldn't set audio frequency");
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219 // return(-1);
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diff changeset
220 // }
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221 // spec->freq = value;
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diff changeset
222 #endif
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223
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diff changeset
224 static int UMS_OpenAudio(_THIS, SDL_AudioSpec *spec)
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225 {
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diff changeset
226 char* audiodev = "/dev/paud0";
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227 long lgain;
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228 long rgain;
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229 long outRate;
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230 long outBufSize;
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diff changeset
231 long bitsPerSample;
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232 long samplesPerSec;
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233 long success;
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234 Uint16 test_format;
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diff changeset
235 int frag_spec;
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diff changeset
236 UMSAudioDevice_ReturnCode rc;
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diff changeset
237
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238 #ifdef DEBUG_AUDIO
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239 fprintf(stderr, "enter UMS_OpenAudio\n");
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240 #endif
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241 rc = UADOpen(this, audiodev,"PLAY", UMSAudioDevice_BlockingIO);
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diff changeset
242 if ( rc != UMSAudioDevice_Success ) {
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diff changeset
243 SDL_SetError("Couldn't open %s: %s", audiodev, strerror(errno));
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diff changeset
244 return -1;
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parents:
diff changeset
245 }
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parents:
diff changeset
246
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diff changeset
247 rc = UADSetAudioFormatType(this, "PCM");
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diff changeset
248
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249 success = 0;
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diff changeset
250 test_format = SDL_FirstAudioFormat(spec->format);
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diff changeset
251 do
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parents:
diff changeset
252 {
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parents:
diff changeset
253 #ifdef DEBUG_AUDIO
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diff changeset
254 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
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diff changeset
255 #endif
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diff changeset
256 switch ( test_format )
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parents:
diff changeset
257 {
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diff changeset
258 case AUDIO_U8:
74212992fb08 Initial revision
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parents:
diff changeset
259 /* from the mac code: better ? */
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diff changeset
260 /* sample_bits = spec->size / spec->samples / spec->channels * 8; */
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diff changeset
261 success = 1;
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diff changeset
262 bitsPerSample = 8;
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diff changeset
263 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
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diff changeset
264 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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diff changeset
265 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
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parents:
diff changeset
266 break;
74212992fb08 Initial revision
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parents:
diff changeset
267 case AUDIO_S8:
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diff changeset
268 success = 1;
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parents:
diff changeset
269 bitsPerSample = 8;
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diff changeset
270 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
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parents:
diff changeset
271 rc = UADSetByteOrder(this, "MSB"); /* irrelevant */
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diff changeset
272 rc = UADSetNumberFormat(this, "SIGNED");
74212992fb08 Initial revision
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parents:
diff changeset
273 break;
74212992fb08 Initial revision
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parents:
diff changeset
274 case AUDIO_S16LSB:
74212992fb08 Initial revision
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parents:
diff changeset
275 success = 1;
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parents:
diff changeset
276 bitsPerSample = 16;
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parents:
diff changeset
277 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
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parents:
diff changeset
278 rc = UADSetByteOrder(this, "LSB");
74212992fb08 Initial revision
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parents:
diff changeset
279 rc = UADSetNumberFormat(this, "SIGNED");
74212992fb08 Initial revision
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parents:
diff changeset
280 break;
74212992fb08 Initial revision
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parents:
diff changeset
281 case AUDIO_S16MSB:
74212992fb08 Initial revision
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parents:
diff changeset
282 success = 1;
74212992fb08 Initial revision
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parents:
diff changeset
283 bitsPerSample = 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
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parents:
diff changeset
285 rc = UADSetByteOrder(this, "MSB");
74212992fb08 Initial revision
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parents:
diff changeset
286 rc = UADSetNumberFormat(this, "SIGNED");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 case AUDIO_U16LSB:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 success = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 bitsPerSample = 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 rc = UADSetByteOrder(this, "LSB");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 case AUDIO_U16MSB:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 success = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 bitsPerSample = 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 rc = UADSetSampleRate(this, spec->freq << 16, &outRate );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 rc = UADSetByteOrder(this, "MSB");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 rc = UADSetNumberFormat(this, "UNSIGNED");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 if ( ! success ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 test_format = SDL_NextAudioFormat();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 while ( ! success && test_format );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 if ( success == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 SDL_SetError("Couldn't find any hardware audio formats");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 spec->format = test_format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 for ( frag_spec = 0; (0x01<<frag_spec) < spec->size; ++frag_spec );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 if ( (0x01<<frag_spec) != spec->size ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 SDL_SetError("Fragment size must be a power of two");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 if ( frag_spec > 2048 ) frag_spec = 2048;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 this->hidden->bytesPerSample = (bitsPerSample / 8) * spec->channels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 samplesPerSec = this->hidden->bytesPerSample * outRate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327
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parents:
diff changeset
328 this->hidden->playbuf._length = 0;
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parents:
diff changeset
329 this->hidden->playbuf._maximum = spec->size;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
330 this->hidden->playbuf._buffer = (unsigned char*)SDL_malloc(spec->size);
0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 this->hidden->fillbuf._length = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 this->hidden->fillbuf._maximum = spec->size;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
333 this->hidden->fillbuf._buffer = (unsigned char*)SDL_malloc(spec->size);
0
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 rc = UADSetBitsPerSample(this, bitsPerSample );
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parents:
diff changeset
336 rc = UADSetDMABufferSize(this, frag_spec, &outBufSize );
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 rc = UADSetChannels(this, spec->channels); /* functions reduces to mono or stereo */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 lgain = 100; /*maximum left input gain*/
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 rgain = 100; /*maimum right input gain*/
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 rc = UADEnableOutput(this, "LINE_OUT",&lgain,&rgain);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 rc = UADInitialize(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 rc = UADStart(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 rc = UADSetVolume(this, 100);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 rc = UADSetBalance(this, 0);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 /* We're ready to rock and roll. :-) */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 static UMSAudioDevice_ReturnCode UADGetBitsPerSample(_THIS, long* bits)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 return UMSAudioDevice_get_bits_per_sample( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 bits );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 static UMSAudioDevice_ReturnCode UADSetBitsPerSample(_THIS, long bits)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 return UMSAudioDevice_set_bits_per_sample( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 bits );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 static UMSAudioDevice_ReturnCode UADSetSampleRate(_THIS, long rate, long* set_rate)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 /* from the mac code: sample rate = spec->freq << 16; */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 return UMSAudioDevice_set_sample_rate( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 this->hidden->ev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 rate,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 set_rate );
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 static UMSAudioDevice_ReturnCode UADSetByteOrder(_THIS, string byte_order)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 return UMSAudioDevice_set_byte_order( this->hidden->umsdev,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 byte_order );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 static UMSAudioDevice_ReturnCode UADSetAudioFormatType(_THIS, string fmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 /* possible PCM, A_LAW or MU_LAW */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 return UMSAudioDevice_set_audio_format_type( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 static UMSAudioDevice_ReturnCode UADSetNumberFormat(_THIS, string fmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 /* possible SIGNED, UNSIGNED, or TWOS_COMPLEMENT */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 return UMSAudioDevice_set_number_format( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 static UMSAudioDevice_ReturnCode UADInitialize(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 return UMSAudioDevice_initialize( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 this->hidden->ev );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 static UMSAudioDevice_ReturnCode UADStart(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 return UMSAudioDevice_start( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 this->hidden->ev );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 static UMSAudioDevice_ReturnCode UADSetTimeFormat(_THIS, UMSAudioTypes_TimeFormat fmt )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 * Switches the time format to the new format, immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 * possible UMSAudioTypes_Msecs, UMSAudioTypes_Bytes or UMSAudioTypes_Samples
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 return UMSAudioDevice_set_time_format( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 fmt );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 static UMSAudioDevice_ReturnCode UADWriteBuffSize(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 * returns write buffer size in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 return UMSAudioDevice_write_buff_size( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 static UMSAudioDevice_ReturnCode UADWriteBuffRemain(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 * returns amount of available space in the write buffer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 * in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 return UMSAudioDevice_write_buff_remain( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 static UMSAudioDevice_ReturnCode UADWriteBuffUsed(_THIS, long* buff_size )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 * returns amount of filled space in the write buffer
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 * in the current time format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 return UMSAudioDevice_write_buff_used( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 buff_size );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 static UMSAudioDevice_ReturnCode UADSetDMABufferSize(_THIS, long bytes, long* bytes_ret )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 * Request a new DMA buffer size, maximum requested size 2048.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 * Takes effect with next initialize() call.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 * Devices may or may not support DMA.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 return UMSAudioDevice_set_DMA_buffer_size( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 bytes,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 bytes_ret );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 static UMSAudioDevice_ReturnCode UADSetVolume(_THIS, long volume )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 * Set the volume.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 * Takes effect immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 return UMSAudioDevice_set_volume( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 volume );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 static UMSAudioDevice_ReturnCode UADSetBalance(_THIS, long balance )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 * Set the balance.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 * Takes effect immediately.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 return UMSAudioDevice_set_balance( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 balance );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 static UMSAudioDevice_ReturnCode UADSetChannels(_THIS, long channels )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 * Set mono or stereo.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 * Takes effect with next initialize() call.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 if ( channels != 1 ) channels = 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 return UMSAudioDevice_set_number_of_channels( this->hidden->umsdev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 this->hidden->ev,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 channels );
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 }
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499
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500 static UMSAudioDevice_ReturnCode UADOpen(_THIS, string device, string mode, long flags)
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501 {
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502 return UMSAudioDevice_open( this->hidden->umsdev,
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503 this->hidden->ev,
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504 device,
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505 mode,
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506 flags );
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507 }
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508
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509 static UMSAudioDevice_ReturnCode UADWrite(_THIS, UMSAudioTypes_Buffer* buff,
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510 long samples,
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511 long* samples_written)
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512 {
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513 return UMSAudioDevice_write( this->hidden->umsdev,
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514 this->hidden->ev,
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515 buff,
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516 samples,
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517 samples_written );
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518 }
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519
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520 static UMSAudioDevice_ReturnCode UADPlayRemainingData(_THIS, boolean block )
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521 {
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522 return UMSAudioDevice_play_remaining_data( this->hidden->umsdev,
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523 this->hidden->ev,
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524 block);
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525 }
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526
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527 static UMSAudioDevice_ReturnCode UADStop(_THIS)
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528 {
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529 return UMSAudioDevice_stop( this->hidden->umsdev,
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530 this->hidden->ev );
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531 }
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532
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533 static UMSAudioDevice_ReturnCode UADClose(_THIS)
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534 {
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535 return UMSAudioDevice_close( this->hidden->umsdev,
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536 this->hidden->ev );
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537 }
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538
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539 static UMSAudioDevice_ReturnCode UADEnableOutput(_THIS, string output, long* left_gain, long* right_gain)
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540 {
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541 return UMSAudioDevice_enable_output( this->hidden->umsdev,
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542 this->hidden->ev,
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543 output,
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544 left_gain,
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545 right_gain );
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546 }
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547