Mercurial > sdl-ios-xcode
annotate src/cdrom/macosx/AudioFileReaderThread.c @ 1487:dc6b59e925a2
Cleaning up warnings on MacOS X
author | Sam Lantinga <slouken@libsdl.org> |
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date | Thu, 09 Mar 2006 06:33:21 +0000 |
parents | d910939febfa |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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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 #include "SDL_config.h" |
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26 |
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27 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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28 AudioFileManager.cpp |
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29 */ |
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30 #include "AudioFilePlayer.h" |
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31 #include <mach/mach.h> /* used for setting policy of thread */ |
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32 #include "SDLOSXCAGuard.h" |
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33 #include <pthread.h> |
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34 |
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35 /*#include <list>*/ |
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36 |
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37 /*typedef void *FileData;*/ |
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38 typedef struct S_FileData |
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39 { |
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40 AudioFileManager *obj; |
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41 struct S_FileData *next; |
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42 } FileData; |
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43 |
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44 |
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45 typedef struct S_FileReaderThread { |
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46 /*public:*/ |
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47 SDLOSXCAGuard* (*GetGuard)(struct S_FileReaderThread *frt); |
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48 void (*AddReader)(struct S_FileReaderThread *frt); |
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49 void (*RemoveReader)(struct S_FileReaderThread *frt, AudioFileManager* inItem); |
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50 int (*TryNextRead)(struct S_FileReaderThread *frt, AudioFileManager* inItem); |
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51 |
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52 int mThreadShouldDie; |
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53 |
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54 /*private:*/ |
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55 /*typedef std::list<AudioFileManager*> FileData;*/ |
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56 |
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57 SDLOSXCAGuard *mGuard; |
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58 UInt32 mThreadPriority; |
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59 |
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60 int mNumReaders; |
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61 FileData *mFileData; |
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62 |
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63 |
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64 void (*ReadNextChunk)(struct S_FileReaderThread *frt); |
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65 int (*StartFixedPriorityThread)(struct S_FileReaderThread *frt); |
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66 /*static*/ |
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67 UInt32 (*GetThreadBasePriority)(pthread_t inThread); |
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68 /*static*/ |
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69 void* (*DiskReaderEntry)(void *inRefCon); |
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70 } FileReaderThread; |
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71 |
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72 |
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73 static SDLOSXCAGuard* FileReaderThread_GetGuard(FileReaderThread *frt) |
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74 { |
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75 return frt->mGuard; |
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76 } |
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77 |
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78 /* returns 1 if succeeded */ |
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79 static int FileReaderThread_TryNextRead (FileReaderThread *frt, AudioFileManager* inItem) |
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80 { |
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81 int didLock = 0; |
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82 int succeeded = 0; |
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83 if (frt->mGuard->Try(frt->mGuard, &didLock)) |
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84 { |
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85 /*frt->mFileData.push_back (inItem);*/ |
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86 /* !!! FIXME: this could be faster with a "tail" member. --ryan. */ |
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87 FileData *i = frt->mFileData; |
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88 FileData *prev = NULL; |
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89 |
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90 FileData *newfd = (FileData *) SDL_malloc(sizeof (FileData)); |
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91 newfd->obj = inItem; |
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92 newfd->next = NULL; |
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93 |
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94 while (i != NULL) { prev = i; i = i->next; } |
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95 if (prev == NULL) |
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96 frt->mFileData = newfd; |
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97 else |
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98 prev->next = newfd; |
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99 |
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100 frt->mGuard->Notify(frt->mGuard); |
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101 succeeded = 1; |
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102 |
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103 if (didLock) |
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104 frt->mGuard->Unlock(frt->mGuard); |
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105 } |
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106 |
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107 return succeeded; |
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108 } |
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109 |
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110 static void FileReaderThread_AddReader(FileReaderThread *frt) |
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111 { |
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112 if (frt->mNumReaders == 0) |
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113 { |
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114 frt->mThreadShouldDie = 0; |
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115 frt->StartFixedPriorityThread (frt); |
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116 } |
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117 frt->mNumReaders++; |
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118 } |
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119 |
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120 static void FileReaderThread_RemoveReader (FileReaderThread *frt, AudioFileManager* inItem) |
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121 { |
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122 if (frt->mNumReaders > 0) |
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123 { |
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124 int bNeedsRelease = frt->mGuard->Lock(frt->mGuard); |
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125 |
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126 /*frt->mFileData.remove (inItem);*/ |
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127 FileData *i = frt->mFileData; |
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128 FileData *prev = NULL; |
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129 while (i != NULL) |
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130 { |
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131 FileData *next = i->next; |
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132 if (i->obj != inItem) |
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133 prev = i; |
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134 else |
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135 { |
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136 if (prev == NULL) |
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137 frt->mFileData = next; |
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138 else |
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139 prev->next = next; |
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140 SDL_free(i); |
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141 } |
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142 i = next; |
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143 } |
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144 |
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145 if (--frt->mNumReaders == 0) { |
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146 frt->mThreadShouldDie = 1; |
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147 frt->mGuard->Notify(frt->mGuard); /* wake up thread so it will quit */ |
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148 frt->mGuard->Wait(frt->mGuard); /* wait for thread to die */ |
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149 } |
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150 |
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151 if (bNeedsRelease) frt->mGuard->Unlock(frt->mGuard); |
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152 } |
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153 } |
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154 |
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155 static int FileReaderThread_StartFixedPriorityThread (FileReaderThread *frt) |
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156 { |
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157 pthread_attr_t theThreadAttrs; |
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158 pthread_t pThread; |
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159 |
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160 OSStatus result = pthread_attr_init(&theThreadAttrs); |
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161 if (result) return 0; /*THROW_RESULT("pthread_attr_init - Thread attributes could not be created.")*/ |
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162 |
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163 result = pthread_attr_setdetachstate(&theThreadAttrs, PTHREAD_CREATE_DETACHED); |
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164 if (result) return 0; /*THROW_RESULT("pthread_attr_setdetachstate - Thread attributes could not be detached.")*/ |
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165 |
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166 result = pthread_create (&pThread, &theThreadAttrs, frt->DiskReaderEntry, frt); |
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167 if (result) return 0; /*THROW_RESULT("pthread_create - Create and start the thread.")*/ |
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168 |
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169 pthread_attr_destroy(&theThreadAttrs); |
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170 |
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171 /* we've now created the thread and started it |
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172 we'll now set the priority of the thread to the nominated priority |
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173 and we'll also make the thread fixed */ |
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174 thread_extended_policy_data_t theFixedPolicy; |
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175 thread_precedence_policy_data_t thePrecedencePolicy; |
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176 SInt32 relativePriority; |
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177 |
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178 /* make thread fixed */ |
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179 theFixedPolicy.timeshare = 0; /* set to 1 for a non-fixed thread */ |
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180 result = thread_policy_set (pthread_mach_thread_np(pThread), THREAD_EXTENDED_POLICY, (thread_policy_t)&theFixedPolicy, THREAD_EXTENDED_POLICY_COUNT); |
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181 if (result) return 0; /*THROW_RESULT("thread_policy - Couldn't set thread as fixed priority.")*/ |
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182 /* set priority */ |
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183 /* precedency policy's "importance" value is relative to spawning thread's priority */ |
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184 relativePriority = frt->mThreadPriority - frt->GetThreadBasePriority(pthread_self()); |
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185 |
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186 thePrecedencePolicy.importance = relativePriority; |
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187 result = thread_policy_set (pthread_mach_thread_np(pThread), THREAD_PRECEDENCE_POLICY, (thread_policy_t)&thePrecedencePolicy, THREAD_PRECEDENCE_POLICY_COUNT); |
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188 if (result) return 0; /*THROW_RESULT("thread_policy - Couldn't set thread priority.")*/ |
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189 |
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190 return 1; |
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191 } |
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192 |
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193 static UInt32 FileReaderThread_GetThreadBasePriority (pthread_t inThread) |
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194 { |
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195 thread_basic_info_data_t threadInfo; |
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196 policy_info_data_t thePolicyInfo; |
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197 unsigned int count; |
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198 |
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199 /* get basic info */ |
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200 count = THREAD_BASIC_INFO_COUNT; |
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201 thread_info (pthread_mach_thread_np (inThread), THREAD_BASIC_INFO, (integer_t*)&threadInfo, &count); |
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202 |
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203 switch (threadInfo.policy) { |
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204 case POLICY_TIMESHARE: |
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205 count = POLICY_TIMESHARE_INFO_COUNT; |
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206 thread_info(pthread_mach_thread_np (inThread), THREAD_SCHED_TIMESHARE_INFO, (integer_t*)&(thePolicyInfo.ts), &count); |
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207 return thePolicyInfo.ts.base_priority; |
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208 break; |
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209 |
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210 case POLICY_FIFO: |
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211 count = POLICY_FIFO_INFO_COUNT; |
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212 thread_info(pthread_mach_thread_np (inThread), THREAD_SCHED_FIFO_INFO, (integer_t*)&(thePolicyInfo.fifo), &count); |
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213 if (thePolicyInfo.fifo.depressed) { |
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214 return thePolicyInfo.fifo.depress_priority; |
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215 } else { |
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216 return thePolicyInfo.fifo.base_priority; |
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217 } |
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218 break; |
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219 |
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220 case POLICY_RR: |
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221 count = POLICY_RR_INFO_COUNT; |
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222 thread_info(pthread_mach_thread_np (inThread), THREAD_SCHED_RR_INFO, (integer_t*)&(thePolicyInfo.rr), &count); |
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223 if (thePolicyInfo.rr.depressed) { |
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224 return thePolicyInfo.rr.depress_priority; |
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225 } else { |
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226 return thePolicyInfo.rr.base_priority; |
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227 } |
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228 break; |
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229 } |
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230 |
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231 return 0; |
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232 } |
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233 |
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234 static void *FileReaderThread_DiskReaderEntry (void *inRefCon) |
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235 { |
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236 FileReaderThread *frt = (FileReaderThread *)inRefCon; |
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237 frt->ReadNextChunk(frt); |
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238 #if DEBUG |
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239 printf ("finished with reading file\n"); |
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240 #endif |
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241 |
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242 return 0; |
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243 } |
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244 |
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245 static void FileReaderThread_ReadNextChunk (FileReaderThread *frt) |
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246 { |
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247 OSStatus result; |
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248 UInt32 dataChunkSize; |
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249 AudioFileManager* theItem = 0; |
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250 |
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251 for (;;) |
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252 { |
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253 { /* this is a scoped based lock */ |
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254 int bNeedsRelease = frt->mGuard->Lock(frt->mGuard); |
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255 |
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256 if (frt->mThreadShouldDie) { |
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257 frt->mGuard->Notify(frt->mGuard); |
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258 if (bNeedsRelease) frt->mGuard->Unlock(frt->mGuard); |
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259 return; |
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260 } |
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261 |
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262 /*if (frt->mFileData.empty())*/ |
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263 if (frt->mFileData == NULL) |
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264 { |
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265 frt->mGuard->Wait(frt->mGuard); |
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266 } |
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267 |
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268 /* kill thread */ |
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269 if (frt->mThreadShouldDie) { |
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270 |
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271 frt->mGuard->Notify(frt->mGuard); |
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272 if (bNeedsRelease) frt->mGuard->Unlock(frt->mGuard); |
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273 return; |
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274 } |
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275 |
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276 /*theItem = frt->mFileData.front();*/ |
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277 /*frt->mFileData.pop_front();*/ |
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278 theItem = NULL; |
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279 if (frt->mFileData != NULL) |
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280 { |
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281 FileData *next = frt->mFileData->next; |
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282 theItem = frt->mFileData->obj; |
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283 SDL_free(frt->mFileData); |
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284 frt->mFileData = next; |
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285 } |
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286 |
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287 if (bNeedsRelease) frt->mGuard->Unlock(frt->mGuard); |
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288 } |
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289 |
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290 if ((theItem->mFileLength - theItem->mReadFilePosition) < theItem->mChunkSize) |
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291 dataChunkSize = theItem->mFileLength - theItem->mReadFilePosition; |
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292 else |
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293 dataChunkSize = theItem->mChunkSize; |
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294 |
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295 /* this is the exit condition for the thread */ |
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296 if (dataChunkSize <= 0) { |
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297 theItem->mFinishedReadingData = 1; |
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298 continue; |
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299 } |
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300 /* construct pointer */ |
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301 char* writePtr = (char *) (theItem->GetFileBuffer(theItem) + |
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302 (theItem->mWriteToFirstBuffer ? 0 : theItem->mChunkSize)); |
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303 |
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304 /* read data */ |
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305 result = theItem->Read(theItem, writePtr, &dataChunkSize); |
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306 if (result != noErr && result != eofErr) { |
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307 AudioFilePlayer *afp = (AudioFilePlayer *) theItem->GetParent(theItem); |
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308 afp->DoNotification(afp, result); |
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309 continue; |
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310 } |
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311 |
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312 if (dataChunkSize != theItem->mChunkSize) |
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313 { |
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314 writePtr += dataChunkSize; |
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315 |
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316 /* can't exit yet.. we still have to pass the partial buffer back */ |
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317 SDL_memset(writePtr, 0, (theItem->mChunkSize - dataChunkSize)); |
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318 } |
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319 |
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320 theItem->mWriteToFirstBuffer = !theItem->mWriteToFirstBuffer; /* switch buffers */ |
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321 |
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322 if (result == eofErr) |
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323 theItem->mReadFilePosition = theItem->mFileLength; |
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324 else |
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325 theItem->mReadFilePosition += dataChunkSize; /* increment count */ |
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326 } |
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327 } |
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328 |
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329 void delete_FileReaderThread(FileReaderThread *frt) |
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330 { |
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331 if (frt != NULL) |
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332 { |
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333 delete_SDLOSXCAGuard(frt->mGuard); |
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334 SDL_free(frt); |
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335 } |
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336 } |
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337 |
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338 FileReaderThread *new_FileReaderThread () |
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339 { |
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340 FileReaderThread *frt = (FileReaderThread *) SDL_malloc(sizeof (FileReaderThread)); |
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341 if (frt == NULL) |
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342 return NULL; |
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343 SDL_memset(frt, '\0', sizeof (*frt)); |
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344 |
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345 frt->mGuard = new_SDLOSXCAGuard(); |
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346 if (frt->mGuard == NULL) |
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347 { |
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348 SDL_free(frt); |
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349 return NULL; |
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350 } |
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351 |
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352 #define SET_FILEREADERTHREAD_METHOD(m) frt->m = FileReaderThread_##m |
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353 SET_FILEREADERTHREAD_METHOD(GetGuard); |
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354 SET_FILEREADERTHREAD_METHOD(AddReader); |
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355 SET_FILEREADERTHREAD_METHOD(RemoveReader); |
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356 SET_FILEREADERTHREAD_METHOD(TryNextRead); |
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357 SET_FILEREADERTHREAD_METHOD(ReadNextChunk); |
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358 SET_FILEREADERTHREAD_METHOD(StartFixedPriorityThread); |
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359 SET_FILEREADERTHREAD_METHOD(GetThreadBasePriority); |
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360 SET_FILEREADERTHREAD_METHOD(DiskReaderEntry); |
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361 #undef SET_FILEREADERTHREAD_METHOD |
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362 |
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363 frt->mThreadPriority = 62; |
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364 return frt; |
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365 } |
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366 |
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367 |
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368 static FileReaderThread *sReaderThread; |
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369 |
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370 |
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371 static int AudioFileManager_DoConnect (AudioFileManager *afm) |
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372 { |
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373 if (!afm->mIsEngaged) |
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374 { |
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375 OSStatus result; |
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376 |
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377 /*afm->mReadFilePosition = 0;*/ |
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378 afm->mFinishedReadingData = 0; |
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379 |
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380 afm->mNumTimesAskedSinceFinished = 0; |
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381 afm->mLockUnsuccessful = 0; |
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382 |
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383 UInt32 dataChunkSize; |
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384 |
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385 if ((afm->mFileLength - afm->mReadFilePosition) < afm->mChunkSize) |
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386 dataChunkSize = afm->mFileLength - afm->mReadFilePosition; |
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387 else |
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388 dataChunkSize = afm->mChunkSize; |
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389 |
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390 result = afm->Read(afm, afm->mFileBuffer, &dataChunkSize); |
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391 if (result) return 0; /*THROW_RESULT("AudioFileManager::DoConnect(): Read")*/ |
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392 |
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393 afm->mReadFilePosition += dataChunkSize; |
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394 |
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395 afm->mWriteToFirstBuffer = 0; |
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396 afm->mReadFromFirstBuffer = 1; |
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397 |
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398 sReaderThread->AddReader(sReaderThread); |
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399 |
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400 afm->mIsEngaged = 1; |
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401 } |
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402 /* |
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403 else |
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404 throw static_cast<OSStatus>(-1); */ /* thread has already been started */ |
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405 |
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406 return 1; |
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407 } |
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408 |
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409 static void AudioFileManager_Disconnect (AudioFileManager *afm) |
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410 { |
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411 if (afm->mIsEngaged) |
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412 { |
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413 sReaderThread->RemoveReader (sReaderThread, afm); |
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414 afm->mIsEngaged = 0; |
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415 } |
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416 } |
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417 |
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418 static OSStatus AudioFileManager_Read(AudioFileManager *afm, char *buffer, UInt32 *len) |
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419 { |
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420 return FSReadFork (afm->mForkRefNum, |
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421 fsFromStart, |
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422 afm->mReadFilePosition + afm->mAudioDataOffset, |
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423 *len, |
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424 buffer, |
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425 len); |
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426 } |
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427 |
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428 static OSStatus AudioFileManager_GetFileData (AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize) |
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429 { |
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430 if (afm->mFinishedReadingData) |
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431 { |
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432 ++afm->mNumTimesAskedSinceFinished; |
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433 *inOutDataSize = 0; |
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434 *inOutData = 0; |
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435 return noErr; |
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436 } |
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437 |
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438 if (afm->mReadFromFirstBuffer == afm->mWriteToFirstBuffer) { |
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439 #if DEBUG |
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440 printf ("* * * * * * * Can't keep up with reading file\n"); |
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441 #endif |
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|
442 |
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443 afm->mParent->DoNotification (afm->mParent, kAudioFilePlayErr_FilePlayUnderrun); |
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444 *inOutDataSize = 0; |
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445 *inOutData = 0; |
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446 } else { |
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447 *inOutDataSize = afm->mChunkSize; |
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448 *inOutData = afm->mReadFromFirstBuffer ? afm->mFileBuffer : (afm->mFileBuffer + afm->mChunkSize); |
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449 } |
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parents:
diff
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450 |
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451 afm->mLockUnsuccessful = !sReaderThread->TryNextRead (sReaderThread, afm); |
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|
452 |
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parents:
diff
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|
453 afm->mReadFromFirstBuffer = !afm->mReadFromFirstBuffer; |
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parents:
diff
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|
454 |
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parents:
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455 return noErr; |
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parents:
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456 } |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
457 |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
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|
458 static void AudioFileManager_AfterRender (AudioFileManager *afm) |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
459 { |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
460 if (afm->mNumTimesAskedSinceFinished > 0) |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
461 { |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
462 int didLock = 0; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
463 SDLOSXCAGuard *guard = sReaderThread->GetGuard(sReaderThread); |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
464 if (guard->Try(guard, &didLock)) { |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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|
465 afm->mParent->DoNotification (afm->mParent, kAudioFilePlay_FileIsFinished); |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
466 if (didLock) |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
467 guard->Unlock(guard); |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
468 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
469 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
470 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
471 if (afm->mLockUnsuccessful) |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
472 afm->mLockUnsuccessful = !sReaderThread->TryNextRead (sReaderThread, afm); |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
473 } |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
474 |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
475 static void AudioFileManager_SetPosition (AudioFileManager *afm, SInt64 pos) |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
476 { |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
477 if (pos < 0 || pos >= afm->mFileLength) { |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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|
478 SDL_SetError ("AudioFileManager::SetPosition - position invalid: %d filelen=%d\n", |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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479 (unsigned int)pos, (unsigned int)afm->mFileLength); |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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480 pos = 0; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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481 } |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
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482 |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
|
483 afm->mReadFilePosition = pos; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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|
484 } |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
485 |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
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486 static void AudioFileManager_SetEndOfFile (AudioFileManager *afm, SInt64 pos) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
487 { |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
488 if (pos <= 0 || pos > afm->mFileLength) { |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
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489 SDL_SetError ("AudioFileManager::SetEndOfFile - position beyond actual eof\n"); |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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490 pos = afm->mFileLength; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
491 } |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
492 |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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changeset
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493 afm->mFileLength = pos; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
494 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
495 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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|
496 static const char *AudioFileManager_GetFileBuffer(AudioFileManager *afm) |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
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497 { |
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
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498 return afm->mFileBuffer; |
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Ryan C. Gordon <icculus@icculus.org>
parents:
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|
499 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
500 |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
501 const AudioFilePlayer *AudioFileManager_GetParent(AudioFileManager *afm) |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
502 { |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
503 return afm->mParent; |
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Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
504 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
505 |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
506 static int AudioFileManager_GetByteCounter(AudioFileManager *afm) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
507 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
508 return afm->mByteCounter; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
509 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
510 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
511 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
512 static OSStatus AudioFileManager_FileInputProc (void *inRefCon, |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
513 AudioUnitRenderActionFlags inActionFlags, |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
514 const AudioTimeStamp *inTimeStamp, |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
515 UInt32 inBusNumber, |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
516 AudioBuffer *ioData) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
517 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
518 AudioFileManager* afm = (AudioFileManager*)inRefCon; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
519 return afm->Render(afm, ioData); |
71a2648acc75
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
520 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
521 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
522 static OSStatus AudioFileManager_Render (AudioFileManager *afm, AudioBuffer *ioData) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
523 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
524 OSStatus result = noErr; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
525 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
526 if (afm->mBufferOffset >= afm->mBufferSize) { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
527 result = afm->GetFileData(afm, &afm->mTmpBuffer, &afm->mBufferSize); |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
528 if (result) { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
529 SDL_SetError ("AudioConverterFillBuffer:%ld\n", result); |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
530 afm->mParent->DoNotification(afm->mParent, result); |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
531 return result; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
532 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
533 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
534 afm->mBufferOffset = 0; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
535 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
536 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
537 if (ioData->mDataByteSize > afm->mBufferSize - afm->mBufferOffset) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
538 ioData->mDataByteSize = afm->mBufferSize - afm->mBufferOffset; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
539 ioData->mData = (char *)afm->mTmpBuffer + afm->mBufferOffset; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
540 afm->mBufferOffset += ioData->mDataByteSize; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
541 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
542 afm->mByteCounter += ioData->mDataByteSize; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
543 afm->AfterRender(afm); |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
544 return result; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
545 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
546 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
547 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
548 void delete_AudioFileManager (AudioFileManager *afm) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
549 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
550 if (afm != NULL) { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
551 if (afm->mFileBuffer) { |
1338
604d73db6802
Removed uses of stdlib.h and string.h
Sam Lantinga <slouken@libsdl.org>
parents:
1336
diff
changeset
|
552 free(afm->mFileBuffer); |
1143
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
553 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
554 |
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1143
diff
changeset
|
555 SDL_free(afm); |
1143
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
556 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
557 } |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
558 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
559 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
560 AudioFileManager *new_AudioFileManager(AudioFilePlayer *inParent, |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
561 SInt16 inForkRefNum, |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
562 SInt64 inFileLength, |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
563 UInt32 inChunkSize) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
564 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
565 AudioFileManager *afm; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
566 |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
567 if (sReaderThread == NULL) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
568 { |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
569 sReaderThread = new_FileReaderThread(); |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
570 if (sReaderThread == NULL) |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
|
571 return NULL; |
71a2648acc75
Replaced Mac OS X's C++ cdrom code with almost-direct translation to C. Sam
Ryan C. Gordon <icculus@icculus.org>
parents:
diff
changeset
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572 } |
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573 |
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574 afm = (AudioFileManager *) SDL_malloc(sizeof (AudioFileManager)); |
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575 if (afm == NULL) |
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576 return NULL; |
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577 SDL_memset(afm, '\0', sizeof (*afm)); |
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578 |
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579 #define SET_AUDIOFILEMANAGER_METHOD(m) afm->m = AudioFileManager_##m |
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580 SET_AUDIOFILEMANAGER_METHOD(Disconnect); |
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581 SET_AUDIOFILEMANAGER_METHOD(DoConnect); |
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582 SET_AUDIOFILEMANAGER_METHOD(Read); |
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583 SET_AUDIOFILEMANAGER_METHOD(GetFileBuffer); |
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584 SET_AUDIOFILEMANAGER_METHOD(GetParent); |
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585 SET_AUDIOFILEMANAGER_METHOD(SetPosition); |
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586 SET_AUDIOFILEMANAGER_METHOD(GetByteCounter); |
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587 SET_AUDIOFILEMANAGER_METHOD(SetEndOfFile); |
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588 SET_AUDIOFILEMANAGER_METHOD(Render); |
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589 SET_AUDIOFILEMANAGER_METHOD(GetFileData); |
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590 SET_AUDIOFILEMANAGER_METHOD(AfterRender); |
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591 SET_AUDIOFILEMANAGER_METHOD(FileInputProc); |
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592 #undef SET_AUDIOFILEMANAGER_METHOD |
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593 |
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594 afm->mParent = inParent; |
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595 afm->mForkRefNum = inForkRefNum; |
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596 afm->mBufferSize = inChunkSize; |
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597 afm->mBufferOffset = inChunkSize; |
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598 afm->mChunkSize = inChunkSize; |
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599 afm->mFileLength = inFileLength; |
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600 afm->mFileBuffer = (char*) SDL_malloc(afm->mChunkSize * 2); |
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601 FSGetForkPosition(afm->mForkRefNum, &afm->mAudioDataOffset); |
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602 assert (afm->mFileBuffer != NULL); |
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603 return afm; |
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604 } |
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605 |