subband_layer_1.hh
上传用户：aoeyumen
上传日期：2007-01-06
资源大小：3329k
文件大小：2k
- #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
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