?? subband_layer_1.hh
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#ifndef SUBBAND_LAYER_1_H#define SUBBAND_LAYER_1_H// class for layer I subbands in single channel mode:class SubbandLayer1 : public Subband { protected: uint32 subbandnumber; uint32 samplenumber; uint32 allocation; uint32 scalefactor; uint32 samplelength; real sample; real factor, offset; public: SubbandLayer1(uint32 subbandnbr) : subbandnumber(subbandnbr), samplenumber(0) {} void read_allocation (AudioStream *, Header *, Crc16 *); void read_scalefactor (AudioStream *, Header *); bool read_sampledata (AudioStream *); bool put_next_sample (e_channels, SynthesisFilter *, SynthesisFilter *);};// class for layer I subbands in joint stereo mode:class SubbandLayer1IntensityStereo : public SubbandLayer1 { protected: uint32 channel2_scalefactor; public: SubbandLayer1IntensityStereo(uint32 subbandnbr) : SubbandLayer1(subbandnbr){} void read_allocation(AudioStream *stream, Header *header, Crc16 *crc){ SubbandLayer1::read_allocation (stream, header, crc); } void read_scalefactor (AudioStream *, Header *); bool read_sampledata (AudioStream *stream){ return SubbandLayer1::read_sampledata(stream); } bool put_next_sample (e_channels, SynthesisFilter *, SynthesisFilter *);};// class for layer I subbands in stereo mode:class SubbandLayer1Stereo : public SubbandLayer1{ protected: uint32 channel2_allocation; uint32 channel2_scalefactor; uint32 channel2_samplelength; real channel2_sample; real channel2_factor, channel2_offset; public: SubbandLayer1Stereo(uint32 subbandnbr) : SubbandLayer1(subbandnbr){} void read_allocation(AudioStream *, Header *, Crc16 *); void read_scalefactor(AudioStream *, Header *); bool read_sampledata(AudioStream *); bool put_next_sample(e_channels, SynthesisFilter *, SynthesisFilter *);};#endif?? 快捷鍵說明
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