author | Ryan C. Gordon <icculus@icculus.org> |
Thu, 22 Sep 2005 08:48:16 +0000 | |
changeset 1143 | 71a2648acc75 |
parent 935 | f8d5ddc7aef1 |
child 1402 | d910939febfa |
permissions | -rw-r--r-- |
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/* |
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SDL - Simple DirectMedia Layer |
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Copyright (C) 1997-2004 Sam Lantinga |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Library General Public |
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License as published by the Free Software Foundation; either |
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version 2 of the License, or (at your option) any later version. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Library General Public License for more details. |
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You should have received a copy of the GNU Library General Public |
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License along with this library; if not, write to the Free |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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Sam Lantinga |
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slouken@libsdl.org |
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This file based on Apple sample code. We haven't changed the file name, |
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so if you want to see the original search for it on apple.com/developer |
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*/ |
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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// AudioFilePlayer.h |
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// |
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#ifndef __AudioFilePlayer_H__ |
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#define __AudioFilePlayer_H__ |
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#include <CoreServices/CoreServices.h> |
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#include <AudioUnit/AudioUnit.h> |
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#include "SDL_error.h" |
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const char* AudioFilePlayerErrorStr (OSStatus error); |
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/* |
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void ThrowResult (OSStatus result, const char *str); |
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#define THROW_RESULT(str) \ |
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if (result) { \ |
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ThrowResult (result, str); \ |
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} |
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*/ |
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typedef void (*AudioFilePlayNotifier)(void *inRefCon, |
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OSStatus inStatus); |
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enum { |
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kAudioFilePlayErr_FilePlayUnderrun = -10000, |
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kAudioFilePlay_FileIsFinished = -10001, |
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kAudioFilePlay_PlayerIsUninitialized = -10002 |
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}; |
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struct S_AudioFileManager; |
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#pragma mark __________ AudioFilePlayer |
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typedef struct S_AudioFilePlayer |
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{ |
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//public: |
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int (*SetDestination)(struct S_AudioFilePlayer *afp, AudioUnit *inDestUnit); |
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void (*SetNotifier)(struct S_AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon); |
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void (*SetStartFrame)(struct S_AudioFilePlayer *afp, int frame); // seek in the file |
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int (*GetCurrentFrame)(struct S_AudioFilePlayer *afp); // get the current frame position |
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void (*SetStopFrame)(struct S_AudioFilePlayer *afp, int frame); // set limit in the file |
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int (*Connect)(struct S_AudioFilePlayer *afp); |
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void (*Disconnect)(struct S_AudioFilePlayer *afp); |
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void (*DoNotification)(struct S_AudioFilePlayer *afp, OSStatus inError); |
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int (*IsConnected)(struct S_AudioFilePlayer *afp); |
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AudioUnit (*GetDestUnit)(struct S_AudioFilePlayer *afp); |
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void (*Print)(struct S_AudioFilePlayer *afp); |
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//private: |
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AudioUnit mPlayUnit; |
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SInt16 mForkRefNum; |
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AudioUnitInputCallback mInputCallback; |
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AudioStreamBasicDescription mFileDescription; |
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int mConnected; |
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struct S_AudioFileManager* mAudioFileManager; |
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AudioFilePlayNotifier mNotifier; |
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void* mRefCon; |
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int mStartFrame; |
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#pragma mark __________ Private_Methods |
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int (*OpenFile)(struct S_AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileSize); |
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} AudioFilePlayer; |
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AudioFilePlayer *new_AudioFilePlayer(const FSRef *inFileRef); |
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void delete_AudioFilePlayer(AudioFilePlayer *afp); |
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#pragma mark __________ AudioFileManager |
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typedef struct S_AudioFileManager |
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{ |
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//public: |
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// this method should NOT be called by an object of this class |
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// as it is called by the parent's Disconnect() method |
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void (*Disconnect)(struct S_AudioFileManager *afm); |
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int (*DoConnect)(struct S_AudioFileManager *afm); |
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OSStatus (*Read)(struct S_AudioFileManager *afm, char *buffer, UInt32 *len); |
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const char* (*GetFileBuffer)(struct S_AudioFileManager *afm); |
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const AudioFilePlayer *(*GetParent)(struct S_AudioFileManager *afm); |
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void (*SetPosition)(struct S_AudioFileManager *afm, SInt64 pos); // seek/rewind in the file |
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int (*GetByteCounter)(struct S_AudioFileManager *afm); // return actual bytes streamed to audio hardware |
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void (*SetEndOfFile)(struct S_AudioFileManager *afm, SInt64 pos); // set the "EOF" (will behave just like it reached eof) |
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//protected: |
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AudioFilePlayer* mParent; |
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SInt16 mForkRefNum; |
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SInt64 mAudioDataOffset; |
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char* mFileBuffer; |
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int mByteCounter; |
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int mReadFromFirstBuffer; |
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int mLockUnsuccessful; |
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int mIsEngaged; |
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int mNumTimesAskedSinceFinished; |
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void* mTmpBuffer; |
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UInt32 mBufferSize; |
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UInt32 mBufferOffset; |
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//public: |
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UInt32 mChunkSize; |
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SInt64 mFileLength; |
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SInt64 mReadFilePosition; |
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int mWriteToFirstBuffer; |
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int mFinishedReadingData; |
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//protected: |
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OSStatus (*Render)(struct S_AudioFileManager *afm, AudioBuffer *ioData); |
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OSStatus (*GetFileData)(struct S_AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize); |
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void (*AfterRender)(struct S_AudioFileManager *afm); |
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//public: |
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//static |
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OSStatus (*FileInputProc)(void *inRefCon, |
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AudioUnitRenderActionFlags inActionFlags, |
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const AudioTimeStamp *inTimeStamp, |
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UInt32 inBusNumber, |
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AudioBuffer *ioData); |
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} AudioFileManager; |
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AudioFileManager *new_AudioFileManager (AudioFilePlayer *inParent, |
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SInt16 inForkRefNum, |
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SInt64 inFileLength, |
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UInt32 inChunkSize); |
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void delete_AudioFileManager(AudioFileManager *afm); |
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#endif |
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