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annotate src/cdrom/macosx/AudioFilePlayer.h @ 1143:71a2648acc75

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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam requested this effort on the mailing list, apparently because of binary compatibility issues between 10.4 and earlier systems (or gcc4 and earlier compilers?). Works fine with SDL12/test/testcdrom.c, with this command line: ./testcdrom -status -list -play -sleep 5000 -pause -sleep 3000 -resume \ -sleep 5000 -stop -sleep 3000 -play -sleep 3000 -stop \ -sleep 3000 -eject Unix Makefiles work, XCode project still need updating for new filenames.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 22 Sep 2005 08:48:16 +0000
parents f8d5ddc7aef1
children d910939febfa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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.h
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28 //
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29 #ifndef __AudioFilePlayer_H__
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30 #define __AudioFilePlayer_H__
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31
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32 #include <CoreServices/CoreServices.h>
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33
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34 #include <AudioUnit/AudioUnit.h>
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35
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36 #include "SDL_error.h"
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37
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38 const char* AudioFilePlayerErrorStr (OSStatus error);
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39
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40 /*
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41 void ThrowResult (OSStatus result, const char *str);
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42
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43 #define THROW_RESULT(str) \
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44 if (result) { \
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45 ThrowResult (result, str); \
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46 }
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47 */
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48
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49 typedef void (*AudioFilePlayNotifier)(void *inRefCon,
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50 OSStatus inStatus);
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51
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52 enum {
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53 kAudioFilePlayErr_FilePlayUnderrun = -10000,
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54 kAudioFilePlay_FileIsFinished = -10001,
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55 kAudioFilePlay_PlayerIsUninitialized = -10002
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56 };
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57
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58
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59 struct S_AudioFileManager;
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60
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61 #pragma mark __________ AudioFilePlayer
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62 typedef struct S_AudioFilePlayer
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63 {
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64 //public:
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65 int (*SetDestination)(struct S_AudioFilePlayer *afp, AudioUnit *inDestUnit);
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66 void (*SetNotifier)(struct S_AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon);
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67 void (*SetStartFrame)(struct S_AudioFilePlayer *afp, int frame); // seek in the file
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68 int (*GetCurrentFrame)(struct S_AudioFilePlayer *afp); // get the current frame position
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69 void (*SetStopFrame)(struct S_AudioFilePlayer *afp, int frame); // set limit in the file
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70 int (*Connect)(struct S_AudioFilePlayer *afp);
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71 void (*Disconnect)(struct S_AudioFilePlayer *afp);
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72 void (*DoNotification)(struct S_AudioFilePlayer *afp, OSStatus inError);
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73 int (*IsConnected)(struct S_AudioFilePlayer *afp);
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74 AudioUnit (*GetDestUnit)(struct S_AudioFilePlayer *afp);
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75 void (*Print)(struct S_AudioFilePlayer *afp);
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76
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77 //private:
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78 AudioUnit mPlayUnit;
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79 SInt16 mForkRefNum;
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80
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81 AudioUnitInputCallback mInputCallback;
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82
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83 AudioStreamBasicDescription mFileDescription;
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84
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85 int mConnected;
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87 struct S_AudioFileManager* mAudioFileManager;
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88
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89 AudioFilePlayNotifier mNotifier;
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90 void* mRefCon;
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91
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92 int mStartFrame;
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93
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94 #pragma mark __________ Private_Methods
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95
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96 int (*OpenFile)(struct S_AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileSize);
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97 } AudioFilePlayer;
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98
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100 AudioFilePlayer *new_AudioFilePlayer(const FSRef *inFileRef);
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101 void delete_AudioFilePlayer(AudioFilePlayer *afp);
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103
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104
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105 #pragma mark __________ AudioFileManager
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106 typedef struct S_AudioFileManager
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107 {
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108 //public:
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109 // this method should NOT be called by an object of this class
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110 // as it is called by the parent's Disconnect() method
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111 void (*Disconnect)(struct S_AudioFileManager *afm);
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112 int (*DoConnect)(struct S_AudioFileManager *afm);
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113 OSStatus (*Read)(struct S_AudioFileManager *afm, char *buffer, UInt32 *len);
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114 const char* (*GetFileBuffer)(struct S_AudioFileManager *afm);
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115 const AudioFilePlayer *(*GetParent)(struct S_AudioFileManager *afm);
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116 void (*SetPosition)(struct S_AudioFileManager *afm, SInt64 pos); // seek/rewind in the file
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117 int (*GetByteCounter)(struct S_AudioFileManager *afm); // return actual bytes streamed to audio hardware
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118 void (*SetEndOfFile)(struct S_AudioFileManager *afm, SInt64 pos); // set the "EOF" (will behave just like it reached eof)
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119
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120 //protected:
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121 AudioFilePlayer* mParent;
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122 SInt16 mForkRefNum;
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123 SInt64 mAudioDataOffset;
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124
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125 char* mFileBuffer;
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126
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127 int mByteCounter;
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128
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129 int mReadFromFirstBuffer;
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130 int mLockUnsuccessful;
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131 int mIsEngaged;
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132
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133 int mNumTimesAskedSinceFinished;
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134
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136 void* mTmpBuffer;
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137 UInt32 mBufferSize;
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138 UInt32 mBufferOffset;
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139 //public:
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140 UInt32 mChunkSize;
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141 SInt64 mFileLength;
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142 SInt64 mReadFilePosition;
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143 int mWriteToFirstBuffer;
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144 int mFinishedReadingData;
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145
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146 //protected:
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147 OSStatus (*Render)(struct S_AudioFileManager *afm, AudioBuffer *ioData);
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148 OSStatus (*GetFileData)(struct S_AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize);
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149 void (*AfterRender)(struct S_AudioFileManager *afm);
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150
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151 //public:
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152 //static
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153 OSStatus (*FileInputProc)(void *inRefCon,
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154 AudioUnitRenderActionFlags inActionFlags,
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155 const AudioTimeStamp *inTimeStamp,
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156 UInt32 inBusNumber,
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157 AudioBuffer *ioData);
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158 } AudioFileManager;
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160
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161 AudioFileManager *new_AudioFileManager (AudioFilePlayer *inParent,
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162 SInt16 inForkRefNum,
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163 SInt64 inFileLength,
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164 UInt32 inChunkSize);
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165
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166 void delete_AudioFileManager(AudioFileManager *afm);
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167
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168 #endif
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169