Mercurial > sdl-ios-xcode
annotate src/cdrom/macosx/AudioFilePlayer.h @ 4347:38f22ed3a433 SDL-1.2
Option to fix bug #851
For some people setting the period size works better (and is what SDL 1.2.13 did), but for most people it's the same or worse. You can use an environment variable to pick which one you want.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 17 Oct 2009 06:55:17 +0000 |
| parents | 386181851388 |
| children | 4c088d2b29eb |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
| 4159 | 3 Copyright (C) 1997-2009 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 #include "SDL_config.h" |
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26 |
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27 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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28 AudioFilePlayer.h |
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29 */ |
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30 #ifndef __AudioFilePlayer_H__ |
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31 #define __AudioFilePlayer_H__ |
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32 |
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33 #include <CoreServices/CoreServices.h> |
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34 |
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35 #include <AudioUnit/AudioUnit.h> |
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36 #if MAC_OS_X_VERSION_MAX_ALLOWED <= 1050 |
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37 #include <AudioUnit/AUNTComponent.h> |
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38 #endif |
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39 |
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40 #include "SDL_error.h" |
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41 |
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42 const char* AudioFilePlayerErrorStr (OSStatus error); |
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44 /* |
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45 void ThrowResult (OSStatus result, const char *str); |
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46 |
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47 #define THROW_RESULT(str) \ |
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48 if (result) { \ |
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49 ThrowResult (result, str); \ |
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50 } |
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51 */ |
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52 |
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53 typedef void (*AudioFilePlayNotifier)(void *inRefCon, |
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54 OSStatus inStatus); |
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55 |
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56 enum { |
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57 kAudioFilePlayErr_FilePlayUnderrun = -10000, |
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58 kAudioFilePlay_FileIsFinished = -10001, |
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59 kAudioFilePlay_PlayerIsUninitialized = -10002 |
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60 }; |
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61 |
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62 |
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63 struct S_AudioFileManager; |
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64 |
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65 #pragma mark __________ AudioFilePlayer |
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66 typedef struct S_AudioFilePlayer |
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67 { |
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68 /*public:*/ |
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69 int (*SetDestination)(struct S_AudioFilePlayer *afp, AudioUnit *inDestUnit); |
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70 void (*SetNotifier)(struct S_AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon); |
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71 void (*SetStartFrame)(struct S_AudioFilePlayer *afp, int frame); /* seek in the file */ |
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72 int (*GetCurrentFrame)(struct S_AudioFilePlayer *afp); /* get the current frame position */ |
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73 void (*SetStopFrame)(struct S_AudioFilePlayer *afp, int frame); /* set limit in the file */ |
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74 int (*Connect)(struct S_AudioFilePlayer *afp); |
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75 void (*Disconnect)(struct S_AudioFilePlayer *afp); |
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76 void (*DoNotification)(struct S_AudioFilePlayer *afp, OSStatus inError); |
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77 int (*IsConnected)(struct S_AudioFilePlayer *afp); |
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78 AudioUnit (*GetDestUnit)(struct S_AudioFilePlayer *afp); |
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79 void (*Print)(struct S_AudioFilePlayer *afp); |
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81 /*private:*/ |
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82 AudioUnit mPlayUnit; |
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83 SInt16 mForkRefNum; |
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84 |
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85 AURenderCallbackStruct mInputCallback; |
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86 |
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87 AudioStreamBasicDescription mFileDescription; |
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89 int mConnected; |
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91 struct S_AudioFileManager* mAudioFileManager; |
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92 |
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93 AudioFilePlayNotifier mNotifier; |
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94 void* mRefCon; |
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95 |
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96 int mStartFrame; |
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97 |
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98 #pragma mark __________ Private_Methods |
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99 |
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100 int (*OpenFile)(struct S_AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileSize); |
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101 } AudioFilePlayer; |
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102 |
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104 AudioFilePlayer *new_AudioFilePlayer(const FSRef *inFileRef); |
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105 void delete_AudioFilePlayer(AudioFilePlayer *afp); |
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108 |
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109 #pragma mark __________ AudioFileManager |
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110 typedef struct S_AudioFileManager |
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111 { |
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112 /*public:*/ |
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113 /* this method should NOT be called by an object of this class |
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114 as it is called by the parent's Disconnect() method */ |
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115 void (*Disconnect)(struct S_AudioFileManager *afm); |
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116 int (*DoConnect)(struct S_AudioFileManager *afm); |
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117 OSStatus (*Read)(struct S_AudioFileManager *afm, char *buffer, ByteCount *len); |
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118 const char* (*GetFileBuffer)(struct S_AudioFileManager *afm); |
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119 const AudioFilePlayer *(*GetParent)(struct S_AudioFileManager *afm); |
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120 void (*SetPosition)(struct S_AudioFileManager *afm, SInt64 pos); /* seek/rewind in the file */ |
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121 int (*GetByteCounter)(struct S_AudioFileManager *afm); /* return actual bytes streamed to audio hardware */ |
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122 void (*SetEndOfFile)(struct S_AudioFileManager *afm, SInt64 pos); /* set the "EOF" (will behave just like it reached eof) */ |
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123 |
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124 /*protected:*/ |
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125 AudioFilePlayer* mParent; |
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126 SInt16 mForkRefNum; |
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127 SInt64 mAudioDataOffset; |
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128 |
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129 char* mFileBuffer; |
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130 |
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131 int mByteCounter; |
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132 |
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133 int mReadFromFirstBuffer; |
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134 int mLockUnsuccessful; |
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135 int mIsEngaged; |
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136 |
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137 int mNumTimesAskedSinceFinished; |
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138 |
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139 |
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140 void* mTmpBuffer; |
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141 UInt32 mBufferSize; |
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142 UInt32 mBufferOffset; |
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143 /*public:*/ |
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144 UInt32 mChunkSize; |
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145 SInt64 mFileLength; |
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146 SInt64 mReadFilePosition; |
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147 int mWriteToFirstBuffer; |
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148 int mFinishedReadingData; |
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149 |
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150 /*protected:*/ |
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151 OSStatus (*Render)(struct S_AudioFileManager *afm, AudioBufferList *ioData); |
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152 OSStatus (*GetFileData)(struct S_AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize); |
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153 void (*AfterRender)(struct S_AudioFileManager *afm); |
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154 |
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155 /*public:*/ |
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156 /*static*/ |
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157 OSStatus (*FileInputProc)(void *inRefCon, |
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158 AudioUnitRenderActionFlags *ioActionFlags, |
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159 const AudioTimeStamp *inTimeStamp, |
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160 UInt32 inBusNumber, |
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161 UInt32 inNumberFrames, |
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162 AudioBufferList *ioData); |
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163 } AudioFileManager; |
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164 |
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165 |
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166 AudioFileManager *new_AudioFileManager (AudioFilePlayer *inParent, |
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167 SInt16 inForkRefNum, |
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168 SInt64 inFileLength, |
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169 UInt32 inChunkSize); |
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170 |
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171 void delete_AudioFileManager(AudioFileManager *afm); |
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172 |
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173 #endif |
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174 |