root/branches/perian-1.1/ACPublic/ACBaseCodec.h

Revision 219, 5.7 kB (checked in by dconrad, 2 years ago)

WMA v1 and v2 decoder. Tested with samples in AVI. Refs #38

Line 
1 /*      Copyright:      © Copyright 2005 Apple Computer, Inc. All rights reserved.
2
3         Disclaimer:     IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
4                         ("Apple") in consideration of your agreement to the following terms, and your
5                         use, installation, modification or redistribution of this Apple software
6                         constitutes acceptance of these terms.  If you do not agree with these terms,
7                         please do not use, install, modify or redistribute this Apple software.
8
9                         In consideration of your agreement to abide by the following terms, and subject
10                         to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs
11                         copyrights in this original Apple software (the "Apple Software"), to use,
12                         reproduce, modify and redistribute the Apple Software, with or without
13                         modifications, in source and/or binary forms; provided that if you redistribute
14                         the Apple Software in its entirety and without modifications, you must retain
15                         this notice and the following text and disclaimers in all such redistributions of
16                         the Apple Software.  Neither the name, trademarks, service marks or logos of
17                         Apple Computer, Inc. may be used to endorse or promote products derived from the
18                         Apple Software without specific prior written permission from Apple.  Except as
19                         expressly stated in this notice, no other rights or licenses, express or implied,
20                         are granted by Apple herein, including but not limited to any patent rights that
21                         may be infringed by your derivative works or by other works in which the Apple
22                         Software may be incorporated.
23
24                         The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
25                         WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
26                         WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27                         PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
28                         COMBINATION WITH YOUR PRODUCTS.
29
30                         IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
31                         CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
32                         GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33                         ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
34                         OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
35                         (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
36                         ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38 /*=============================================================================
39         ACBaseCodec.h
40
41 =============================================================================*/
42 #if !defined(__ACBaseCodec_h__)
43 #define __ACBaseCodec_h__
44
45 //=============================================================================
46 //      Includes
47 //=============================================================================
48
49 #include "ACCodec.h"
50 #include "CAStreamBasicDescription.h"
51 #include <vector>
52 #include "GetCodecBundle.h"
53
54 //=============================================================================
55 //      ACBaseCodec
56 //
57 //      An abstract subclass of ACCodec that implements all the nuts and bolts
58 //      of the ACCodec interface, except for buffer handling. This class does
59 //      the proper dispatching of property requests and manages the list of
60 //      input and output formats.
61 //=============================================================================
62
63 class ACBaseCodec
64 :
65         public ACCodec
66 {
67
68 //      Construction/Destruction
69 public:
70                                                                         ACBaseCodec();
71         virtual                                                 ~ACBaseCodec();
72
73 //      Property Management
74 public:
75         virtual void                                    GetPropertyInfo(AudioCodecPropertyID inPropertyID, UInt32& outPropertyDataSize, bool& outWritable);
76         virtual void                                    GetProperty(AudioCodecPropertyID inPropertyID, UInt32& ioPropertyDataSize, void* outPropertyData);
77         virtual void                                    SetProperty(AudioCodecPropertyID inPropertyID, UInt32 inPropertyDataSize, const void* inPropertyData);
78
79 //      Data Handling
80 public:
81         bool                                                    IsInitialized() const { return mIsInitialized; }
82         virtual void                                    Initialize(const AudioStreamBasicDescription* inInputFormat, const AudioStreamBasicDescription* inOutputFormat, const void* inMagicCookie, UInt32 inMagicCookieByteSize);
83         virtual void                                    Uninitialize();
84         virtual void                                    Reset();
85         virtual UInt32                                  GetInputBufferByteSize() const = 0;
86         virtual UInt32                                  GetUsedInputBufferByteSize() const = 0;
87
88 protected:
89         virtual void                                    ReallocateInputBuffer(UInt32 inInputBufferByteSize) = 0;
90        
91         bool                                                    mIsInitialized;
92
93 //      Format Management
94 public:
95         UInt32                                                  GetNumberSupportedInputFormats() const;
96         void                                                    GetSupportedInputFormats(AudioStreamBasicDescription* outInputFormats, UInt32& ioNumberInputFormats) const;
97
98         void                                                    GetCurrentInputFormat(AudioStreamBasicDescription& outInputFormat);
99         virtual void                                    SetCurrentInputFormat(const AudioStreamBasicDescription& inInputFormat);
100        
101         UInt32                                                  GetNumberSupportedOutputFormats() const;
102         void                                                    GetSupportedOutputFormats(AudioStreamBasicDescription* outOutputFormats, UInt32& ioNumberOutputFormats) const;
103        
104         void                                                    GetCurrentOutputFormat(AudioStreamBasicDescription& outOutputFormat);
105         virtual void                                    SetCurrentOutputFormat(const AudioStreamBasicDescription& inOutputFormat);
106        
107         virtual UInt32                                  GetMagicCookieByteSize() const;
108         virtual void                                    GetMagicCookie(void* outMagicCookieData, UInt32& ioMagicCookieDataByteSize) const;
109         virtual void                                    SetMagicCookie(const void* outMagicCookieData, UInt32 inMagicCookieDataByteSize);
110
111 protected:
112         void                                                    AddInputFormat(const AudioStreamBasicDescription& inInputFormat);
113         void                                                    AddOutputFormat(const AudioStreamBasicDescription& inOutputFormat);
114        
115         typedef std::vector<CAStreamBasicDescription>   FormatList;
116        
117         FormatList                                              mInputFormatList;
118         CAStreamBasicDescription                mInputFormat;
119        
120         FormatList                                              mOutputFormatList;
121         CAStreamBasicDescription                mOutputFormat;
122
123 };
124
125 #endif
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