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3975
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 /*
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24 SDL_epocaudio.cpp
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25 Epoc based SDL audio driver implementation
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26
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27 Markus Mertama
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28 */
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29
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30 #ifdef SAVE_RCSID
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31 static char rcsid =
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32 "@(#) $Id: SDL_epocaudio.c,v 0.0.0.0 2001/06/19 17:19:56 hercules Exp $";
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33 #endif
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34
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35
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36 #include <stdlib.h>
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37 #include <stdio.h>
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38 #include <string.h>
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39 #include <errno.h>
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40 #include <unistd.h>
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41 #include <fcntl.h>
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42 #include <signal.h>
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43 #include <sys/time.h>
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44 #include <sys/ioctl.h>
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45 #include <sys/stat.h>
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46
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47 #include "epoc_sdl.h"
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48
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49 #include <e32hal.h>
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50
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51
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52 extern "C" {
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53 #include "SDL_audio.h"
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54 #include "SDL_error.h"
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55 #include "SDL_audiomem.h"
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56 #include "SDL_audio_c.h"
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57 #include "SDL_timer.h"
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58 #include "SDL_audiodev_c.h"
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59 }
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60
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61 #include "SDL_epocaudio.h"
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62
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63 #include "streamplayer.h"
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64
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65
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66 //#define DEBUG_AUDIO
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67
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68
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69 /* Audio driver functions */
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70
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71 static int EPOC_OpenAudio(SDL_AudioDevice *thisdevice, SDL_AudioSpec *spec);
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72 static void EPOC_WaitAudio(SDL_AudioDevice *thisdevice);
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73 static void EPOC_PlayAudio(SDL_AudioDevice *thisdevice);
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74 static Uint8 *EPOC_GetAudioBuf(SDL_AudioDevice *thisdevice);
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75 static void EPOC_CloseAudio(SDL_AudioDevice *thisdevice);
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76 static void EPOC_ThreadInit(SDL_AudioDevice *thisdevice);
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77
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78 static int Audio_Available(void);
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79 static SDL_AudioDevice *Audio_CreateDevice(int devindex);
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80 static void Audio_DeleteDevice(SDL_AudioDevice *device);
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81
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82
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83 //void sos_adump(SDL_AudioDevice* thisdevice, void* data, int len);
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84
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85 #ifdef __WINS__
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86 #define DODUMP
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87 #endif
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88
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89 #ifdef DODUMP
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90 NONSHARABLE_CLASS(TDump)
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91 {
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92 public:
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93 TInt Open();
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94 void Close();
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95 void Dump(const TDesC8& aDes);
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96 private:
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97 RFile iFile;
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98 RFs iFs;
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99 };
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100
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101 TInt TDump::Open()
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102 {
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103 TInt err = iFs.Connect();
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104 if(err == KErrNone)
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105 {
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106 #ifdef __WINS__
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107 _LIT(target, "C:\\sdlau.raw");
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108 #else
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109 _LIT(target, "E:\\sdlau.raw");
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110 #endif
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111 err = iFile.Replace(iFs, target, EFileWrite);
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112 }
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113 return err;
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114 }
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115 void TDump::Close()
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116 {
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117 iFile.Close();
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118 iFs.Close();
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119 }
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120 void TDump::Dump(const TDesC8& aDes)
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121 {
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122 iFile.Write(aDes);
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123 }
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124 #endif
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125
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126
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127 NONSHARABLE_CLASS(CSimpleWait) : public CTimer
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128 {
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129 public:
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130 void Wait(TTimeIntervalMicroSeconds32 aWait);
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131 static CSimpleWait* NewL();
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132 private:
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133 CSimpleWait();
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134 void RunL();
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135 };
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136
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137
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138 CSimpleWait* CSimpleWait::NewL()
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139 {
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140 CSimpleWait* wait = new (ELeave) CSimpleWait();
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141 CleanupStack::PushL(wait);
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142 wait->ConstructL();
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143 CleanupStack::Pop();
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144 return wait;
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145 }
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146
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147 void CSimpleWait::Wait(TTimeIntervalMicroSeconds32 aWait)
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148 {
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149 After(aWait);
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150 CActiveScheduler::Start();
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151 }
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152
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153 CSimpleWait::CSimpleWait() : CTimer(CActive::EPriorityStandard)
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154 {
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155 CActiveScheduler::Add(this);
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156 }
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157
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158 void CSimpleWait::RunL()
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159 {
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160 CActiveScheduler::Stop();
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161 }
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162
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163 const TInt KAudioBuffers(2);
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164
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165
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166 NONSHARABLE_CLASS(CEpocAudio) : public CBase, public MStreamObs, public MStreamProvider
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167 {
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168 public:
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169 static void* NewL(TInt BufferSize, TInt aFill);
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170 inline static CEpocAudio& Current(SDL_AudioDevice* thisdevice);
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171
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172 static void Free(SDL_AudioDevice* thisdevice);
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173
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174 void Wait();
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175 void Play();
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176 // void SetBuffer(const TDesC8& aBuffer);
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177 void ThreadInitL(TAny* aDevice);
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178 void Open(TInt iRate, TInt iChannels, TUint32 aType, TInt aBytes);
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179 ~CEpocAudio();
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180 TUint8* Buffer();
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181 TBool SetPause(TBool aPause);
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182 #ifdef DODUMP
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183 void Dump(const TDesC8& aBuf) {iDump.Dump(aBuf);}
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184 #endif
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185 private:
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186 CEpocAudio(TInt aBufferSize);
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187 void Complete(TInt aState, TInt aError);
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188 TPtrC8 Data();
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189 void ConstructL(TInt aFill);
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190 private:
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191 TInt iBufferSize;
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192 CStreamPlayer* iPlayer;
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193 TInt iBufferRate;
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194 TInt iRate;
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195 TInt iChannels;
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196 TUint32 iType;
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197 TInt iPosition;
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198 TThreadId iTid;
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199 TUint8* iAudioPtr;
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200 TUint8* iBuffer;
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201 // TTimeIntervalMicroSeconds iStart;
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202 TTime iStart;
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203 TInt iTune;
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204 CSimpleWait* iWait;
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205 #ifdef DODUMP
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206 TDump iDump;
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207 #endif
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208 };
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209
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210 inline CEpocAudio& CEpocAudio::Current(SDL_AudioDevice* thisdevice)
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211 {
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212 return *static_cast<CEpocAudio*>((void*)thisdevice->hidden);
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213 }
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214
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215 /*
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216
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217 TBool EndSc(TAny*)
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218 {
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219 CActiveScheduler::Stop();
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220 }
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221
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222 LOCAL_C void CleanScL()
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223 {
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224 CIdle* d = CIdle::NewLC(CActive:::EPriorityIdle);
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225 d->Start(TCallBack(EndSc));
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226 CActiveScheduler::Start();
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227
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228 }
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229 */
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230
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231 void CEpocAudio::Free(SDL_AudioDevice* thisdevice)
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232 {
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233 CEpocAudio* ea = static_cast<CEpocAudio*>((void*)thisdevice->hidden);
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234 if(ea)
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235 {
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236 ASSERT(ea->iTid == RThread().Id());
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237 delete ea;
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238 thisdevice->hidden = NULL;
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239
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240 CActiveScheduler* as = CActiveScheduler::Current();
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241 ASSERT(as->StackDepth() == 0);
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242 delete as;
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243 CActiveScheduler::Install(NULL);
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244 }
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245 ASSERT(thisdevice->hidden == NULL);
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246 }
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247
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248 CEpocAudio::CEpocAudio(TInt aBufferSize) : iBufferSize(aBufferSize), iPosition(-1)
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249 {
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250 }
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251
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252 void* CEpocAudio::NewL(TInt aBufferSize, TInt aFill)
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253 {
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254 CEpocAudio* eAudioLib = new (ELeave) CEpocAudio(aBufferSize);
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255 CleanupStack::PushL(eAudioLib);
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256 eAudioLib->ConstructL(aFill);
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257 CleanupStack::Pop();
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258 return eAudioLib;
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259 }
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260
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261 void CEpocAudio::ConstructL(TInt aFill)
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262 {
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263 iBuffer = (TUint8*) User::AllocL(KAudioBuffers * iBufferSize);
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264 memset(iBuffer, aFill, KAudioBuffers * iBufferSize);
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265 iAudioPtr = iBuffer;
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266 }
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267
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268
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269 TBool CEpocAudio::SetPause(TBool aPause)
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270 {
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271 if(aPause && iPosition >= 0)
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272 {
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273 iPosition = -1;
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274 if(iPlayer != NULL)
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275 iPlayer->Stop();
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276 }
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277 if(!aPause && iPosition < 0)
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278 {
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279 iPosition = 0;
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280 if(iPlayer != NULL)
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281 iPlayer->Start();
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282 }
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283 return iPosition < 0;
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284 }
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285
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286 void CEpocAudio::ThreadInitL(TAny* aDevice)
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287 {
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288 iTid = RThread().Id();
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289 CActiveScheduler* as = new (ELeave) CActiveScheduler();
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290 CActiveScheduler::Install(as);
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291
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292 EpocSdlEnv::AppendCleanupItem(TSdlCleanupItem((TSdlCleanupOperation)EPOC_CloseAudio, aDevice));
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293
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294 iWait = CSimpleWait::NewL();
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295
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296 iPlayer = new (ELeave) CStreamPlayer(*this, *this);
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297 iPlayer->ConstructL();
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298 iPlayer->OpenStream(iRate, iChannels, iType);
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299
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300 #ifdef DODUMP
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301 User::LeaveIfError(iDump.Open());
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302 #endif
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303 }
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304
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305
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306
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307 TUint8* CEpocAudio::Buffer()
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308 {
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309 iStart.UniversalTime();
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310 // iStart = iPlayer->Position();
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311 return iAudioPtr;
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312
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313 }
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314
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315 CEpocAudio::~CEpocAudio()
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316 {
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317 if(iWait != NULL)
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318 iWait->Cancel();
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319 delete iWait;
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320 if(iPlayer != NULL)
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321 iPlayer->Close();
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322 delete iPlayer;
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323 delete iBuffer;
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324 }
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325
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326 void CEpocAudio::Complete(TInt aState, TInt aError)
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327 {
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328 if(aState == MStreamObs::EClose)
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329 {
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330 }
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331 if(iPlayer->Closed())
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332 return;
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333 switch(aError)
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334 {
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335 case KErrUnderflow:
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336 case KErrInUse:
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337 iPlayer->Start();
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338 break;
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339 case KErrAbort:
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340 iPlayer->Open();
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341 }
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342 }
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343
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344
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345 void sos_adump(SDL_AudioDevice* thisdevice, void* data, int len)
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346 {
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347 #ifdef DODUMP
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348 const TPtrC8 buf((TUint8*)data, len);
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349 CEpocAudio::Current(thisdevice).Dump(buf);
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350 #endif
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351 }
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352
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353 const TInt KClip(256);
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354
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355 TPtrC8 CEpocAudio::Data()
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356 {
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357 if(iPosition < 0)
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358 return KNullDesC8();
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359
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360 TPtrC8 data(iAudioPtr + iPosition, KClip);
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361
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362 #ifdef DODUMP
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363 iDump.Dump(data);
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364 #endif
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365
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366 iPosition += KClip;
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367 if(iPosition >= iBufferSize)
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368 {
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369
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370 /* if(iAudioPtr == iBuffer)
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371 iAudioPtr = iBuffer + iBufferSize;
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372 else
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373 iAudioPtr = iBuffer;
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374 */
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375 iAudioPtr += iBufferSize;
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376
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377 if((iAudioPtr - iBuffer) >= KAudioBuffers * iBufferSize)
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378 iAudioPtr = iBuffer;
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379
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380 iPosition = -1;
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381 if(iWait->IsActive())
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382 {
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383 iWait->Cancel();
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384 CActiveScheduler::Stop();
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385 }
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386 }
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387 return data;
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388 }
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389
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390
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391
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392
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393 void CEpocAudio::Play()
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394 {
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395 iPosition = 0;
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396 }
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397
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398 void CEpocAudio::Wait()
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399 {
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400 if(iPosition >= 0 /*&& iPlayer->Playing()*/)
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401 {
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402 const TInt64 bufMs = TInt64(iBufferSize - KClip) * TInt64(1000000);
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403 const TInt64 specTime = bufMs / TInt64(iRate * iChannels * 2);
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404 iWait->After(specTime);
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405
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406 CActiveScheduler::Start();
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407 TTime end;
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408 end.UniversalTime();
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409 const TTimeIntervalMicroSeconds delta = end.MicroSecondsFrom(iStart);
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410
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411
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412 // const TTimeIntervalMicroSeconds end = iPlayer->Position();
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413
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414
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415
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416
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417 const TInt diff = specTime - delta.Int64();
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418
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419 if(diff > 0 && diff < 200000)
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420 {
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421 User::After(diff);
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422 }
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423
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424 }
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425 else
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426 {
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427 User::After(10000);
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428 // iWait->Wait(10000); //just give some time...
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429 }
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430 }
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431
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432 void CEpocAudio::Open(TInt aRate, TInt aChannels, TUint32 aType, TInt aBytes)
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433 {
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434 iRate = aRate;
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435 iChannels = aChannels;
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436 iType = aType;
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437 iBufferRate = iRate * iChannels * aBytes; //1/x
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438 }
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439
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440
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441 /* Audio driver bootstrap functions */
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442
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443 AudioBootStrap EPOCAudio_bootstrap = {
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444 "epoc\0\0\0",
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445 "EPOC streaming audio\0\0\0",
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446 Audio_Available,
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447 Audio_CreateDevice
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448 };
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449
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450
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451 static SDL_AudioDevice *Audio_CreateDevice(int /*devindex*/)
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452 {
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453 SDL_AudioDevice *thisdevice;
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454
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455 /* Initialize all variables that we clean on shutdown */
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456 thisdevice = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
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|
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457 if ( thisdevice ) {
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|
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458 memset(thisdevice, 0, (sizeof *thisdevice));
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459 thisdevice->hidden = NULL; /*(struct SDL_PrivateAudioData *)
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|
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460 malloc((sizeof thisdevice->hidden)); */
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|
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461 }
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|
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462 if ( (thisdevice == NULL) /*|| (thisdevice->hidden == NULL) */) {
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463 SDL_OutOfMemory();
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464 if ( thisdevice ) {
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465 free(thisdevice);
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466 }
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467 return(0);
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|
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468 }
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|
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469 // memset(thisdevice->hidden, 0, (sizeof *thisdevice->hidden));
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|
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470
|
|
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471 /* Set the function pointers */
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472 thisdevice->OpenAudio = EPOC_OpenAudio;
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473 thisdevice->WaitAudio = EPOC_WaitAudio;
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474 thisdevice->PlayAudio = EPOC_PlayAudio;
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|
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475 thisdevice->GetAudioBuf = EPOC_GetAudioBuf;
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|
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476 thisdevice->CloseAudio = EPOC_CloseAudio;
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477 thisdevice->ThreadInit = EPOC_ThreadInit;
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|
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478 thisdevice->free = Audio_DeleteDevice;
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|
|
479
|
|
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480 return thisdevice;
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|
|
481 }
|
|
|
482
|
|
|
483
|
|
|
484 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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485 {
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|
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486 //free(device->hidden);
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|
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487 free(device);
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|
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488 }
|
|
|
489
|
|
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490 static int Audio_Available(void)
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|
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491 {
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|
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492 return(1); // Audio stream modules should be always there!
|
|
|
493 }
|
|
|
494
|
|
|
495
|
|
|
496 static int EPOC_OpenAudio(SDL_AudioDevice *thisdevice, SDL_AudioSpec *spec)
|
|
|
497 {
|
|
|
498 SDL_TRACE("SDL:EPOC_OpenAudio");
|
|
|
499
|
|
|
500
|
|
|
501 TUint32 type = KMMFFourCCCodePCM16;
|
|
|
502 TInt bytes = 2;
|
|
|
503
|
|
|
504 switch(spec->format)
|
|
|
505 {
|
|
|
506 case AUDIO_U16LSB:
|
|
|
507 type = KMMFFourCCCodePCMU16;
|
|
|
508 break;
|
|
|
509 case AUDIO_S16LSB:
|
|
|
510 type = KMMFFourCCCodePCM16;
|
|
|
511 break;
|
|
|
512 case AUDIO_U16MSB:
|
|
|
513 type = KMMFFourCCCodePCMU16B;
|
|
|
514 break;
|
|
|
515 case AUDIO_S16MSB:
|
|
|
516 type = KMMFFourCCCodePCM16B;
|
|
|
517 break;
|
|
|
518 //8 bit not supported!
|
|
|
519 case AUDIO_U8:
|
|
|
520 case AUDIO_S8:
|
|
|
521 default:
|
|
|
522 spec->format = AUDIO_S16LSB;
|
|
|
523 };
|
|
|
524
|
|
|
525
|
|
|
526
|
|
|
527 if(spec->channels > 2)
|
|
|
528 spec->channels = 2;
|
|
|
529
|
|
|
530 spec->freq = CStreamPlayer::ClosestSupportedRate(spec->freq);
|
|
|
531
|
|
|
532
|
|
|
533 /* Allocate mixing buffer */
|
|
|
534 const TInt buflen = spec->size;// * bytes * spec->channels;
|
|
|
535 // audiobuf = NULL;
|
|
|
536
|
|
|
537 TRAPD(err, thisdevice->hidden = static_cast<SDL_PrivateAudioData*>(CEpocAudio::NewL(buflen, spec->silence)));
|
|
|
538 if(err != KErrNone)
|
|
|
539 return -1;
|
|
|
540
|
|
|
541 CEpocAudio::Current(thisdevice).Open(spec->freq, spec->channels, type, bytes);
|
|
|
542
|
|
|
543 CEpocAudio::Current(thisdevice).SetPause(ETrue);
|
|
|
544
|
|
|
545 // isSDLAudioPaused = 1;
|
|
|
546
|
|
|
547 thisdevice->enabled = 0; /* enable only after audio engine has been initialized!*/
|
|
|
548
|
|
|
549 /* We're ready to rock and roll. :-) */
|
|
|
550 return(0);
|
|
|
551 }
|
|
|
552
|
|
|
553
|
|
|
554 static void EPOC_CloseAudio(SDL_AudioDevice* thisdevice)
|
|
|
555 {
|
|
|
556 #ifdef DEBUG_AUDIO
|
|
|
557 SDL_TRACE("Close audio\n");
|
|
|
558 #endif
|
|
|
559
|
|
|
560 CEpocAudio::Free(thisdevice);
|
|
|
561 }
|
|
|
562
|
|
|
563
|
|
|
564 static void EPOC_ThreadInit(SDL_AudioDevice *thisdevice)
|
|
|
565 {
|
|
|
566 SDL_TRACE("SDL:EPOC_ThreadInit");
|
|
|
567 CEpocAudio::Current(thisdevice).ThreadInitL(thisdevice);
|
|
|
568 RThread().SetPriority(EPriorityMore);
|
|
|
569 thisdevice->enabled = 1;
|
|
|
570 }
|
|
|
571
|
|
|
572 /* This function waits until it is possible to write a full sound buffer */
|
|
|
573 static void EPOC_WaitAudio(SDL_AudioDevice* thisdevice)
|
|
|
574 {
|
|
|
575 #ifdef DEBUG_AUDIO
|
|
|
576 SDL_TRACE1("wait %d audio\n", CEpocAudio::AudioLib().StreamPlayer(KSfxChannel).SyncTime());
|
|
|
577 TInt tics = User::TickCount();
|
|
|
578 #endif
|
|
|
579
|
|
|
580 CEpocAudio::Current(thisdevice).Wait();
|
|
|
581
|
|
|
582 #ifdef DEBUG_AUDIO
|
|
|
583 TInt ntics = User::TickCount() - tics;
|
|
|
584 SDL_TRACE1("audio waited %d\n", ntics);
|
|
|
585 SDL_TRACE1("audio at %d\n", tics);
|
|
|
586 #endif
|
|
|
587 }
|
|
|
588
|
|
|
589
|
|
|
590
|
|
|
591 static void EPOC_PlayAudio(SDL_AudioDevice* thisdevice)
|
|
|
592 {
|
|
|
593 if(CEpocAudio::Current(thisdevice).SetPause(SDL_GetAudioStatus() == SDL_AUDIO_PAUSED))
|
|
|
594 SDL_Delay(500); //hold on the busy loop
|
|
|
595 else
|
|
|
596 CEpocAudio::Current(thisdevice).Play();
|
|
|
597
|
|
|
598 #ifdef DEBUG_AUDIO
|
|
|
599 SDL_TRACE("buffer has audio data\n");
|
|
|
600 #endif
|
|
|
601
|
|
|
602
|
|
|
603 #ifdef DEBUG_AUDIO
|
|
|
604 SDL_TRACE1("Wrote %d bytes of audio data\n", buflen);
|
|
|
605 #endif
|
|
|
606 }
|
|
|
607
|
|
|
608 static Uint8 *EPOC_GetAudioBuf(SDL_AudioDevice* thisdevice)
|
|
|
609 {
|
|
|
610 return CEpocAudio::Current(thisdevice).Buffer();
|
|
|
611 }
|
|
|
612
|
|
|
613
|
|
|
614
|
