--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/inc/AudCommon.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,223 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - Initial contribution
+*
+* Contributors:
+* Ixonos Plc
+*
+* Description:  
+* Common definitions for audio.
+*
+*/
+
+
+
+#ifndef __AUDCOMMON_H__
+#define __AUDCOMMON_H__
+
+#include <e32std.h>
+
+
+const TInt KErrNoAudio = -400;
+/**
+ * Enumeration for audio file formats.
+ */
+enum TAudFormat
+    {
+    EAudFormatUnrecognized = 100001,  // should always be the first one
+    EAudFormat3GPP,
+    EAudFormatMP4,
+    EAudFormatAMR,
+    EAudFormatAMRWB,
+    EAudFormatMP3,
+    EAudFormatAAC_ADIF,
+    EAudFormatAAC_ADTS,
+    EAudFormatWAV,
+    EAudFormatLast  // should always be the last one
+    };
+
+
+/**
+ * Enumeration for audio types (that is, codecs).
+ */
+enum TAudType
+    {
+    EAudTypeUnrecognized = 101001,  // should always be the first one
+    EAudNoAudio,
+    EAudAMR,
+    EAudAMRWB,
+    EAudMP3,
+    EAudAAC_MPEG2, // EAudAAC_MPEG2 not used, all EAudAAC_MPEG is now 4
+    EAudAAC_MPEG4,
+    EAudWAV,
+    EAudTypeLast  // should always be the last one
+    };
+    
+/*
+   Purpose:     MPEG-4 Audio object types.
+   Explanation: - */
+enum TAudAACObjectType
+{
+  EAudAACObjectTypeNone = -1,
+  EAudAACObjectTypeMain,
+  EAudAACObjectTypeLC,
+  EAudAACObjectTypeSSR,
+  EAudAACObjectTypeLTP,
+  EAudAACObjectTypeLast
+};
+  
+/**
+ * Enumeration for audio extension types (AAC+)
+ */
+enum TAudExtensionType
+    {
+    EAudExtensionTypeNoExtension = 20000,
+    EAudExtensionTypeEnhancedAACPlus,
+    EAudExtensionTypeEnhancedAACPlusParametricStereo
+    
+    };    
+
+/**
+ * Constants for audio clip priorities.
+ */
+const TInt KAudClipPriorityHighest = 400;
+const TInt KAudClipPriorityHigh = 300;
+const TInt KAudClipPriorityNormal = 200;
+const TInt KAudClipPriorityLow = 100;
+const TInt KAudClipPriorityLowest = 0;
+
+
+  
+
+
+/**
+ * Enumeration for channel modes
+ */
+enum TChannelMode 
+    {
+    EAudChannelModeNotRecognized = 103001,   
+    EAudStereo,
+    EAudDualChannel,
+    EAudSingleChannel,
+    EAudParametricStereoChannel
+    };
+
+/**
+ * Enumeration for bitrate modes
+ */
+enum TBitrateMode 
+    {
+    EAudBitrateModeNotRecognized = 103001,
+    EAudConstant,
+    EAudVariable
+    };
+    
+/**
+ * Class for storing dynamic level marks.
+ */
+class TAudDynamicLevelMark 
+    {
+
+public:
+
+    /** Mark time. */
+    TTimeIntervalMicroSeconds iTime;
+
+    /** Dynamic level (-63.5 ... +63.5) in dB:s
+    * one step represents 0.5 dB, hence values can be -127 ... +127
+    */
+    TInt8 iLevel;
+
+    TAudDynamicLevelMark(TTimeIntervalMicroSeconds aTime, TInt aLevel) 
+        {
+        iTime = aTime;
+        if ( aLevel < -127 )
+            {
+            iLevel = -127;
+            }
+        else if (aLevel > 127 )
+            {
+            iLevel = 127;
+            }
+        else
+            {
+            iLevel = TInt8(aLevel);
+            }
+        }
+
+    TAudDynamicLevelMark(const TAudDynamicLevelMark& aMark) 
+        {
+        iTime = aMark.iTime;
+        iLevel = aMark.iLevel;
+        }
+    };    
+
+/**
+ * Class for storing general properties about an audio file.
+ */
+class TAudFileProperties 
+    {
+
+public:
+
+    // File format
+    TAudFormat iFileFormat;
+    // Codec
+    TAudType iAudioType;
+    // Extension type
+    TAudExtensionType iAudioTypeExtension;
+    // Duration of the clip in microseconds
+    TTimeIntervalMicroSeconds iDuration;
+    // Sampling rate in Hertzes
+    TInt iSamplingRate;
+    // Bitrate in bits/s
+    TInt iBitrate;
+    // Channel mode
+    TChannelMode iChannelMode;
+    // Channel mode for extension
+    TChannelMode iChannelModeExtension;
+    // Bitrate mode (constant or variable)
+    TBitrateMode iBitrateMode;
+    // Number of bytes in a compressed frame
+    TInt32 iFrameLen;
+    // Is iFrameLen constant?
+    TBool iConstantFrameLength;
+    // Duration of decoded frame in microseconds
+    TTimeIntervalMicroSeconds iFrameDuration;
+    // Number of frames in the clip
+    TInt32 iFrameCount;
+//    TCodecMode iCodecMode;
+    // Number of frames in a sample (e.g. amr in mp4 has several)
+    TInt iNumFramesPerSample;
+    // Bitdepth in PCM data (usually 8, 16 or 24, only for PCM-data)
+    TInt iNumberOfBitsPerSample; 
+    // Original field in MP3 fixed header
+    TBool iOriginal;
+    
+    // AAC object type
+    TAudAACObjectType iAACObjectType;
+
+    TBool isCompatible(const TAudFileProperties /*&c2*/) const 
+        {
+        
+        // Now that the clips can be decoded and encoded
+        // all the clips are "compatible" with each other        
+        
+        return ETrue;
+
+
+        }
+
+    };    
+
+
+
+#endif // __AUDCOMMON_H__
+