/
AudioFilePlayer.h
169 lines (124 loc) · 6.31 KB
/
AudioFilePlayer.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2004 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
This file based on Apple sample code. We haven't changed the file name,
so if you want to see the original search for it on apple.com/developer
*/
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// AudioFilePlayer.h
//
#ifndef __AudioFilePlayer_H__
#define __AudioFilePlayer_H__
#include <CoreServices/CoreServices.h>
#include <AudioUnit/AudioUnit.h>
#include "SDL_error.h"
const char* AudioFilePlayerErrorStr (OSStatus error);
/*
void ThrowResult (OSStatus result, const char *str);
#define THROW_RESULT(str) \
if (result) { \
ThrowResult (result, str); \
}
*/
typedef void (*AudioFilePlayNotifier)(void *inRefCon,
OSStatus inStatus);
enum {
kAudioFilePlayErr_FilePlayUnderrun = -10000,
kAudioFilePlay_FileIsFinished = -10001,
kAudioFilePlay_PlayerIsUninitialized = -10002
};
struct S_AudioFileManager;
#pragma mark __________ AudioFilePlayer
typedef struct S_AudioFilePlayer
{
//public:
int (*SetDestination)(struct S_AudioFilePlayer *afp, AudioUnit *inDestUnit);
void (*SetNotifier)(struct S_AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon);
void (*SetStartFrame)(struct S_AudioFilePlayer *afp, int frame); // seek in the file
int (*GetCurrentFrame)(struct S_AudioFilePlayer *afp); // get the current frame position
void (*SetStopFrame)(struct S_AudioFilePlayer *afp, int frame); // set limit in the file
int (*Connect)(struct S_AudioFilePlayer *afp);
void (*Disconnect)(struct S_AudioFilePlayer *afp);
void (*DoNotification)(struct S_AudioFilePlayer *afp, OSStatus inError);
int (*IsConnected)(struct S_AudioFilePlayer *afp);
AudioUnit (*GetDestUnit)(struct S_AudioFilePlayer *afp);
void (*Print)(struct S_AudioFilePlayer *afp);
//private:
AudioUnit mPlayUnit;
SInt16 mForkRefNum;
AudioUnitInputCallback mInputCallback;
AudioStreamBasicDescription mFileDescription;
int mConnected;
struct S_AudioFileManager* mAudioFileManager;
AudioFilePlayNotifier mNotifier;
void* mRefCon;
int mStartFrame;
#pragma mark __________ Private_Methods
int (*OpenFile)(struct S_AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileSize);
} AudioFilePlayer;
AudioFilePlayer *new_AudioFilePlayer(const FSRef *inFileRef);
void delete_AudioFilePlayer(AudioFilePlayer *afp);
#pragma mark __________ AudioFileManager
typedef struct S_AudioFileManager
{
//public:
// this method should NOT be called by an object of this class
// as it is called by the parent's Disconnect() method
void (*Disconnect)(struct S_AudioFileManager *afm);
int (*DoConnect)(struct S_AudioFileManager *afm);
OSStatus (*Read)(struct S_AudioFileManager *afm, char *buffer, UInt32 *len);
const char* (*GetFileBuffer)(struct S_AudioFileManager *afm);
const AudioFilePlayer *(*GetParent)(struct S_AudioFileManager *afm);
void (*SetPosition)(struct S_AudioFileManager *afm, SInt64 pos); // seek/rewind in the file
int (*GetByteCounter)(struct S_AudioFileManager *afm); // return actual bytes streamed to audio hardware
void (*SetEndOfFile)(struct S_AudioFileManager *afm, SInt64 pos); // set the "EOF" (will behave just like it reached eof)
//protected:
AudioFilePlayer* mParent;
SInt16 mForkRefNum;
SInt64 mAudioDataOffset;
char* mFileBuffer;
int mByteCounter;
int mReadFromFirstBuffer;
int mLockUnsuccessful;
int mIsEngaged;
int mNumTimesAskedSinceFinished;
void* mTmpBuffer;
UInt32 mBufferSize;
UInt32 mBufferOffset;
//public:
UInt32 mChunkSize;
SInt64 mFileLength;
SInt64 mReadFilePosition;
int mWriteToFirstBuffer;
int mFinishedReadingData;
//protected:
OSStatus (*Render)(struct S_AudioFileManager *afm, AudioBuffer *ioData);
OSStatus (*GetFileData)(struct S_AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize);
void (*AfterRender)(struct S_AudioFileManager *afm);
//public:
//static
OSStatus (*FileInputProc)(void *inRefCon,
AudioUnitRenderActionFlags inActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
AudioBuffer *ioData);
} AudioFileManager;
AudioFileManager *new_AudioFileManager (AudioFilePlayer *inParent,
SInt16 inForkRefNum,
SInt64 inFileLength,
UInt32 inChunkSize);
void delete_AudioFileManager(AudioFileManager *afm);
#endif