|
1 /* |
|
2 * Copyright (c) 2010 Ixonos Plc. |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - Initial contribution |
|
11 * |
|
12 * Contributors: |
|
13 * Ixonos Plc |
|
14 * |
|
15 * Description: |
|
16 * |
|
17 */ |
|
18 |
|
19 |
|
20 #ifndef __CPROCMP4INFILEHANDLER_H__ |
|
21 #define __CPROCMP4INFILEHANDLER_H__ |
|
22 |
|
23 #include <e32base.h> |
|
24 #include <f32file.h> |
|
25 #include "mp4lib.h" |
|
26 |
|
27 #include "AudCommon.h" |
|
28 #include "ProcConstants.h" |
|
29 #include "ProcInFileHandler.h" |
|
30 //#include "mp4aud.h" |
|
31 #include "AACConstants.h" |
|
32 |
|
33 #include "ProcDecoder.h" |
|
34 |
|
35 |
|
36 class CMP4Parser; |
|
37 |
|
38 class CProcMP4InFileHandler: public CProcInFileHandler |
|
39 { |
|
40 |
|
41 public: |
|
42 |
|
43 /* |
|
44 * |
|
45 * Constructors & destructor |
|
46 * |
|
47 */ |
|
48 |
|
49 static CProcMP4InFileHandler* NewL(const TDesC& aFileName, RFile* aFileHandle, |
|
50 CAudClip* aClip, TInt aReadBufferSize, |
|
51 TInt aTargetSampleRate = 0, |
|
52 TChannelMode aChannelMode = EAudSingleChannel); |
|
53 |
|
54 static CProcMP4InFileHandler* NewLC(const TDesC& aFileName, RFile* aFileHandle, |
|
55 CAudClip* aClip, TInt aReadBufferSize, |
|
56 TInt aTargetSampleRate = 0, |
|
57 TChannelMode aChannelMode = EAudSingleChannel); |
|
58 virtual ~CProcMP4InFileHandler(); |
|
59 |
|
60 // From base class ---------> |
|
61 |
|
62 void GetPropertiesL(TAudFileProperties* aProperties); |
|
63 |
|
64 /** |
|
65 * Seeks a certain audio frame for reading |
|
66 * |
|
67 * Possible leave codes: |
|
68 * |
|
69 * @param aTime time from the beginning of file in milliseconds |
|
70 * |
|
71 * @return ETrue if successful |
|
72 * EFalse if beyond the file |
|
73 */ |
|
74 TBool SeekAudioFrame(TInt32 aTime); |
|
75 |
|
76 |
|
77 /** |
|
78 * Seeks a cut in audio frame for reading |
|
79 * |
|
80 * Possible leave codes: |
|
81 * |
|
82 * |
|
83 * @return ETrue if successful |
|
84 * |
|
85 */ |
|
86 TBool SeekCutInFrame(); |
|
87 |
|
88 virtual TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler); |
|
89 |
|
90 // <-------------------------------------- from base class |
|
91 |
|
92 /* |
|
93 * |
|
94 * Used to retrieve information for frame handler |
|
95 * |
|
96 * @param aBytes (output) decoder specific info |
|
97 * @param aBufferSize maximum allowed aBytes |
|
98 * |
|
99 * @return ETrue if successful (memory reserved) |
|
100 * EFalse if not successful (no memory reserved) |
|
101 * |
|
102 * NOTE: The caller is responsible for releasing the memory! |
|
103 */ |
|
104 virtual TBool ReadAudioDecoderSpecificInfoL(HBufC8*& aBytes, TInt aBufferSize); |
|
105 |
|
106 /* |
|
107 * Reads the time scale of the MP4 file |
|
108 * |
|
109 * @param aTimescale timescale |
|
110 * |
|
111 */ |
|
112 virtual TBool ReadTimeScale(mp4_u32& aTimescale); |
|
113 |
|
114 /* |
|
115 * Reads the audio description of the MP4 file |
|
116 * |
|
117 * @param aAudiolength length of the clip |
|
118 * @param aAudiotype type of the clip |
|
119 * @param aFramespersample number of frames in sample |
|
120 * @param aTimescale timescale |
|
121 * @param aAveragebitrate average bitrate |
|
122 * |
|
123 */ |
|
124 MP4Err ParseRequestAudioDescription(mp4_u32 *aAudiolength, |
|
125 mp4_u32 *aAudiotype, |
|
126 mp4_u8 *aFramespersample, |
|
127 mp4_u32 *aTimescale, |
|
128 mp4_u32 *aAveragebitrate); |
|
129 |
|
130 /* |
|
131 * |
|
132 * Returns AAC info |
|
133 * @param aAACInfo AAC info |
|
134 * |
|
135 */ |
|
136 TBool GetInfoForFrameHandler(TAACFrameHandlerInfo& aAACInfo); |
|
137 |
|
138 |
|
139 |
|
140 |
|
141 |
|
142 |
|
143 private: |
|
144 |
|
145 // constructL |
|
146 void ConstructL(const TDesC& aFileName, RFile* aFileHandle, CAudClip* aClip, |
|
147 TInt aReadBufferSize, TInt aTargetSampleRate = 0, |
|
148 TChannelMode aChannelMode = EAudSingleChannel); |
|
149 |
|
150 // c++ construtor |
|
151 CProcMP4InFileHandler(); |
|
152 |
|
153 // gets audio frame info |
|
154 TBool GetAudioFrameInfoL(TInt& aFrameAmount, TInt& aAverageFrameDuration, TInt& aAverageFrameSize, |
|
155 TAudFileProperties* aProperties); |
|
156 |
|
157 TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime); |
|
158 |
|
159 /* |
|
160 * Reads one amr frame from iReadBuffer and updates iReadBufferPos |
|
161 * |
|
162 * @param aOneAMRFrame amr frame in return |
|
163 * |
|
164 * @return ETrue if successful, the caller must release the memory |
|
165 * EFalse if frame can not be read, no need to release memory |
|
166 */ |
|
167 TBool ReadOneAMRFrameL(HBufC8*& aOneAMRFrame); |
|
168 |
|
169 TBool ReadOneAWBFrameL(HBufC8*& aOneAWBFrame); |
|
170 |
|
171 private: |
|
172 |
|
173 // Handle to MP4Lib |
|
174 MP4Handle iParser; |
|
175 |
|
176 // timestamp of a previous frame |
|
177 TInt32 iLastTimeStamp; |
|
178 |
|
179 // information for frame handler |
|
180 TAACFrameHandlerInfo* iFrameInfo; |
|
181 |
|
182 // read buffer |
|
183 mp4_u8 *iMP4ReadBuffer; |
|
184 // read buffer size |
|
185 TInt iMP4ReadBufferSize; |
|
186 // position of the read buffer |
|
187 TInt iMP4ReadBufferPos; |
|
188 |
|
189 |
|
190 |
|
191 |
|
192 protected: |
|
193 |
|
194 |
|
195 |
|
196 }; |
|
197 |
|
198 #endif |