transfo.h
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上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /************************* MPEG-2 NBC Audio Decoder **************************
- * *
- "This software module was originally developed by
- AT&T, Dolby Laboratories, Fraunhofer Gesellschaft IIS in the course of
- development of the MPEG-2 NBC/MPEG-4 Audio standard ISO/IEC 13818-7,
- 14496-1,2 and 3. This software module is an implementation of a part of one or more
- MPEG-2 NBC/MPEG-4 Audio tools as specified by the MPEG-2 NBC/MPEG-4
- Audio standard. ISO/IEC gives users of the MPEG-2 NBC/MPEG-4 Audio
- standards free license to this software module or modifications thereof for use in
- hardware or software products claiming conformance to the MPEG-2 NBC/MPEG-4
- Audio standards. Those intending to use this software module in hardware or
- software products are advised that this use may infringe existing patents.
- The original developer of this software module and his/her company, the subsequent
- editors and their companies, and ISO/IEC have no liability for use of this software
- module or modifications thereof in an implementation. Copyright is not released for
- non MPEG-2 NBC/MPEG-4 Audio conforming products.The original developer
- retains full right to use the code for his/her own purpose, assign or donate the
- code to a third party and to inhibit third party from using the code for non
- MPEG-2 NBC/MPEG-4 Audio conforming products. This copyright notice must
- be included in all copies or derivative works."
- Copyright(c)1996.
- * *
- ****************************************************************************/
- #ifndef TRANSFORM_H
- #define TRANSFORM_H
- #ifndef HAS_Float
- typedef float Float;
- #define HAS_Float
- #endif
- #define TRANS_DATATYPE Float /* :-) beginner like! */
- void Transform(TRANS_DATATYPE* data, int n, int param);
- void ITransform(TRANS_DATATYPE* date, int n, int param);
- void CompFFT(TRANS_DATATYPE *data, int nn, int isign);
- void FFT(TRANS_DATATYPE *data, int nn, int isign);
- void MDCT(double* data, int N, int b, int isign);
- #endif