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annotate src/cdrom/macosx/AudioFilePlayer.cpp @ 613:9c6717a1c66f

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Added MacOS X CD-ROM audio support (thanks Max and Darrell)
author Sam Lantinga <slouken@libsdl.org>
date Tue, 15 Apr 2003 16:33:56 +0000
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children de1b2c3063b9
rev   line source
613
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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, 2002 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@libsdl.org
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21
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22 This file based on Apple sample code. We haven't changed the file name,
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23 so if you want to see the original search for it on apple.com/developer
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24 */
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25
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26 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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27 // AudioFilePlayer.cpp
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28 //
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29 #include "AudioFilePlayer.h"
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30
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31 extern const char* AudioFilePlayerErrorStr (OSStatus error)
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32 {
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33 const char *str;
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34
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35 switch (error) {
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36 case kAudioFileUnspecifiedError: str = "wht?"; break;
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37 case kAudioFileUnsupportedFileTypeError: str = "typ?"; break;
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38 case kAudioFileUnsupportedDataFormatError: str = "fmt?"; break;
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39 case kAudioFileUnsupportedPropertyError: str = "pty?"; break;
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40 case kAudioFileBadPropertySizeError: str = "!siz"; break;
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41 case kAudioFileNotOptimizedError: str = "optm"; break;
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42 case kAudioFilePermissionsError: str = "prm?"; break;
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43 case kAudioFileFormatNameUnavailableError: str = "nme?"; break;
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44 case kAudioFileInvalidChunkError: str = "chk?"; break;
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45 case kAudioFileDoesNotAllow64BitDataSizeError: str = "off?"; break;
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46 default: str = "error unspecified";
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47 }
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48
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49 return str;
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50 }
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51
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52 void ThrowResult (OSStatus result, const char* str)
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53 {
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54 SDL_SetError ("Error: %s %d (%s)",
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55 str, result, AudioFilePlayerErrorStr(result));
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56 throw result;
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57 }
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58
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59 #if DEBUG
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60 void PrintStreamDesc (AudioStreamBasicDescription *inDesc)
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61 {
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62 if (!inDesc) {
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63 printf ("Can't print a NULL desc!\n");
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64 return;
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65 }
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66
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67 printf ("- - - - - - - - - - - - - - - - - - - -\n");
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68 printf (" Sample Rate:%f\n", inDesc->mSampleRate);
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69 printf (" Format ID:%s\n", (char*)&inDesc->mFormatID);
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70 printf (" Format Flags:%lX\n", inDesc->mFormatFlags);
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71 printf (" Bytes per Packet:%ld\n", inDesc->mBytesPerPacket);
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72 printf (" Frames per Packet:%ld\n", inDesc->mFramesPerPacket);
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73 printf (" Bytes per Frame:%ld\n", inDesc->mBytesPerFrame);
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74 printf (" Channels per Frame:%ld\n", inDesc->mChannelsPerFrame);
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75 printf (" Bits per Channel:%ld\n", inDesc->mBitsPerChannel);
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76 printf ("- - - - - - - - - - - - - - - - - - - -\n");
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77 }
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78 #endif
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79
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80 OSStatus AudioFileManager::FileInputProc (void *inRefCon,
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81 AudioUnitRenderActionFlags inActionFlags,
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82 const AudioTimeStamp *inTimeStamp,
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83 UInt32 inBusNumber,
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84 AudioBuffer *ioData)
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85 {
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86 AudioFileManager* THIS = (AudioFileManager*)inRefCon;
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87 return THIS->Render(*ioData);
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88 }
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89
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90 OSStatus AudioFileManager::Render (AudioBuffer &ioData)
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91 {
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92 OSStatus result = AudioConverterFillBuffer(mParentConverter,
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93 AudioFileManager::ACInputProc,
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94 this,
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95 &ioData.mDataByteSize,
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96 ioData.mData);
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97 if (result) {
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98 SDL_SetError ("AudioConverterFillBuffer:%ld\n", result);
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99 mParent.DoNotification (result);
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100 } else {
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101 mByteCounter += ioData.mDataByteSize / 2;
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102 AfterRender();
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103 }
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104 return result;
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105 }
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106
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107 OSStatus AudioFileManager::ACInputProc (AudioConverterRef inAudioConverter,
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108 UInt32* outDataSize,
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109 void** outData,
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110 void* inUserData)
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111 {
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112 AudioFileManager* THIS = (AudioFileManager*)inUserData;
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113 return THIS->GetFileData(outData, outDataSize);
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114 }
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115
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116 AudioFileManager::~AudioFileManager ()
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117 {
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118 if (mFileBuffer) {
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119 free (mFileBuffer);
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120 mFileBuffer = 0;
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121 }
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122 }
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123
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124 AudioFilePlayer::AudioFilePlayer (const FSRef *inFileRef)
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125 : mConnected (false),
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126 mAudioFileManager (0),
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127 mConverter (0),
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128 mNotifier (0),
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129 mStartFrame (0)
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130 {
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131 SInt64 fileDataSize = 0;
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132
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133 OpenFile (inFileRef, fileDataSize);
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134
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135 // we want about a seconds worth of data for the buffer
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136 int secsBytes = UInt32 (mFileDescription.mSampleRate * mFileDescription.mBytesPerFrame);
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137
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138 #if DEBUG
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139 printf("File format:\n");
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140 PrintStreamDesc (&mFileDescription);
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141 #endif
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142
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143 //round to a 32K boundary
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144 //if ((secsBytes & 0xFFFF8000) > (128 * 1024))
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145 //secsBytes &= 0xFFFF8000;
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146 //else
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147 //secsBytes = (secsBytes + 0x7FFF) & 0xFFFF8000;
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148
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149 mAudioFileManager = new AudioFileReaderThread (*this,
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150 mAudioFileID,
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151 fileDataSize,
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152 secsBytes);
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153 }
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154
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155 // you can put a rate scalar here to play the file faster or slower
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156 // by multiplying the same rate by the desired factor
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157 // eg fileSampleRate * 2 -> twice as fast
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158 // before you create the AudioConverter
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159 void AudioFilePlayer::SetDestination (AudioUnit &inDestUnit,
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160 int inBusNumber)
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161 {
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162 if (mConnected) throw static_cast<OSStatus>(-1); //can't set dest if already engaged
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163
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164 mPlayUnit = inDestUnit;
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165 mBusNumber = inBusNumber;
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166
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167 OSStatus result = noErr;
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168
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169 if (mConverter) {
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170 result = AudioConverterDispose (mConverter);
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171 THROW_RESULT("AudioConverterDispose")
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172 }
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173
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174 AudioStreamBasicDescription destDesc;
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175 UInt32 size = sizeof (destDesc);
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176 result = AudioUnitGetProperty (inDestUnit,
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177 kAudioUnitProperty_StreamFormat,
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178 kAudioUnitScope_Input,
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179 inBusNumber,
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180 &destDesc,
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181 &size);
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182 THROW_RESULT("AudioUnitGetProperty")
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183
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184 #if DEBUG
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185 printf("Destination format:\n");
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186 PrintStreamDesc (&destDesc);
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187 #endif
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188
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189 //we can "down" cast a component instance to a component
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190 ComponentDescription desc;
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191 result = GetComponentInfo ((Component)inDestUnit, &desc, 0, 0, 0);
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192 THROW_RESULT("GetComponentInfo")
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193
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194 // we're going to use this to know which convert routine to call
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195 // a v1 audio unit will have a type of 'aunt'
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196 // a v2 audio unit will have one of several different types.
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197 mIsAUNTUnit = (desc.componentType == kAudioUnitComponentType);
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198
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199 if (!mIsAUNTUnit) {
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200 result = badComponentInstance;
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201 THROW_RESULT("BAD COMPONENT")
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202 }
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203
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204
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205 // HACK - the AIFF files on CDs are in little endian order!
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206 if (mFileDescription.mFormatFlags == 0xE)
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207 mFileDescription.mFormatFlags &= ~kAudioFormatFlagIsBigEndian;
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208
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209
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210 result = AudioConverterNew (&mFileDescription, &destDesc, &mConverter);
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211 THROW_RESULT("AudioConverterNew")
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212
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213
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214 /*
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215 // if we have a mono source, we're going to copy each channel into
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216 // the destination's channel source...
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217 if (mFileDescription.mChannelsPerFrame == 1) {
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218
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219 SInt32* channelMap = new SInt32 [destDesc.mChannelsPerFrame];
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220 for (unsigned int i = 0; i < destDesc.mChannelsPerFrame; ++i)
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221 channelMap[i] = 0; //set first channel to all output channels
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222
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223 result = AudioConverterSetProperty(mConverter,
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224 kAudioConverterChannelMap,
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225 (sizeof(SInt32) * destDesc.mChannelsPerFrame),
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226 channelMap);
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227 THROW_RESULT("AudioConverterSetProperty")
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228
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229 delete [] channelMap;
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230 }
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231 */
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232 assert (mFileDescription.mChannelsPerFrame == 2);
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233
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234 #if 0
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235 // this uses the better quality SRC
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236 UInt32 srcID = kAudioUnitSRCAlgorithm_Polyphase;
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237 result = AudioConverterSetProperty(mConverter,
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238 kAudioConverterSampleRateConverterAlgorithm,
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239 sizeof(srcID),
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240 &srcID);
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241 THROW_RESULT("AudioConverterSetProperty")
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242 #endif
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243 }
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244
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245 void AudioFilePlayer::SetStartFrame (int frame)
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246 {
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247 SInt64 position = frame * 2352;
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248
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249 mStartFrame = frame;
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250 mAudioFileManager->SetPosition (position);
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251 }
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252
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253
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254 int AudioFilePlayer::GetCurrentFrame ()
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255 {
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256 return mStartFrame + (mAudioFileManager->GetByteCounter() / 2352);
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257 }
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258
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259 void AudioFilePlayer::SetStopFrame (int frame)
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260 {
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261 SInt64 position = frame * 2352;
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262
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263 mAudioFileManager->SetEndOfFile (position);
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264 }
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265
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266 AudioFilePlayer::~AudioFilePlayer()
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267 {
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268 Disconnect();
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269
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270 if (mAudioFileManager) {
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271 delete mAudioFileManager;
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272 mAudioFileManager = 0;
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273 }
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274
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275 if (mAudioFileID) {
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276 ::AudioFileClose (mAudioFileID);
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277 mAudioFileID = 0;
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278 }
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279
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280 if (mConverter) {
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281 AudioConverterDispose (mConverter);
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282 mConverter = 0;
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283 }
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284 }
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285
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286 void AudioFilePlayer::Connect()
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287 {
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288 #if DEBUG
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289 printf ("Connect:%x,%ld, engaged=%d\n", (int)mPlayUnit, mBusNumber, (mConnected ? 1 : 0));
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290 #endif
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291 if (!mConnected)
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292 {
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293 mAudioFileManager->Connect(mConverter);
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294
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295 // set the render callback for the file data to be supplied to the sound converter AU
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296 if (mIsAUNTUnit) {
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297 mInputCallback.inputProc = AudioFileManager::FileInputProc;
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298 mInputCallback.inputProcRefCon = mAudioFileManager;
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299
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300 OSStatus result = AudioUnitSetProperty (mPlayUnit,
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301 kAudioUnitProperty_SetInputCallback,
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302 kAudioUnitScope_Input,
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parents:
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303 mBusNumber,
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304 &mInputCallback,
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305 sizeof(mInputCallback));
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306 THROW_RESULT("AudioUnitSetProperty")
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307 }
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308 mConnected = true;
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309 }
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310 }
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311
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312 // warning noted, now please go away ;-)
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313 // #warning This should redirect the calling of notification code to some other thread
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314 void AudioFilePlayer::DoNotification (OSStatus inStatus) const
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315 {
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316 AudioFilePlayer* THIS = const_cast<AudioFilePlayer*>(this);
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317
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318 if (mNotifier) {
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319 (*mNotifier) (mRefCon, inStatus);
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320 }
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321
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322 else {
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323 SDL_SetError ("Notification posted with no notifier in place");
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324
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325 if (inStatus == kAudioFilePlay_FileIsFinished)
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326 THIS->Disconnect();
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327 else if (inStatus != kAudioFilePlayErr_FilePlayUnderrun)
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328 THIS->Disconnect();
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329 }
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diff changeset
330 }
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331
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diff changeset
332 void AudioFilePlayer::Disconnect ()
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diff changeset
333 {
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diff changeset
334 #if DEBUG
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diff changeset
335 printf ("Disconnect:%x,%ld, engaged=%d\n", (int)mPlayUnit, mBusNumber, (mConnected ? 1 : 0));
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diff changeset
336 #endif
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337 if (mConnected)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338 {
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diff changeset
339 mConnected = false;
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diff changeset
340
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
341 if (mIsAUNTUnit) {
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diff changeset
342 mInputCallback.inputProc = 0;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
343 mInputCallback.inputProcRefCon = 0;
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diff changeset
344 OSStatus result = AudioUnitSetProperty (mPlayUnit,
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diff changeset
345 kAudioUnitProperty_SetInputCallback,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346 kAudioUnitScope_Input,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
347 mBusNumber,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 &mInputCallback,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 sizeof(mInputCallback));
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parents:
diff changeset
350 if (result)
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
351 SDL_SetError ("AudioUnitSetProperty:RemoveInputCallback:%ld", result);
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parents:
diff changeset
352
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
353 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
354
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
355 mAudioFileManager->Disconnect();
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
356 }
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
357 }
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
358
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
359 void AudioFilePlayer::OpenFile (const FSRef *inRef, SInt64& outFileDataSize)
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
360 {
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
361 OSStatus result = AudioFileOpen (inRef, fsRdPerm, 0, &mAudioFileID);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
362 THROW_RESULT("AudioFileOpen")
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
363
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
364 UInt32 dataSize = sizeof(AudioStreamBasicDescription);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
365 result = AudioFileGetProperty (mAudioFileID,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366 kAudioFilePropertyDataFormat,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
367 &dataSize,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
368 &mFileDescription);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369 THROW_RESULT("AudioFileGetProperty")
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 dataSize = sizeof (SInt64);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 result = AudioFileGetProperty (mAudioFileID,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
373 kAudioFilePropertyAudioDataByteCount,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374 &dataSize,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
375 &outFileDataSize);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 THROW_RESULT("AudioFileGetProperty")
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377 }