typedef struct SHAPE_SRC_CONTEXT {  
    UINT32 timestamp : 21;  
    UINT32 blocksToSkip : 2;  
    UINT32 internalSaturate : 1;  
    UINT32 mixBufPeakMag : 4;  
    UINT32 peakMag : 4;  
    UINT32 samplingIncrement : 21;  
    UINT32 reserved0 : 1;  
    UINT32 cmd : 2;  
    UINT32 mixBufPeakMag2 : 4;  
    UINT32 peakMag2 : 4;  
    UINT32 sampleCount : 32;  
    UINT32 samplePointer : 25;  
    UINT32 reserved1 : 7;  
    UINT32 samplingIncrementTarget : 21;  
    UINT32 reserved2 : 11;  
    UINT32 reserved[3];  
};