github.com/johnnyeven/libtools@v0.0.0-20191126065708-61829c1adf46/third_party/fft2d/fft2d.h (about)

     1  /* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
     2  
     3  Licensed under the Apache License, Version 2.0 (the "License");
     4  you may not use this file except in compliance with the License.
     5  You may obtain a copy of the License at
     6  
     7      http://www.apache.org/licenses/LICENSE-2.0
     8  
     9  Unless required by applicable law or agreed to in writing, software
    10  distributed under the License is distributed on an "AS IS" BASIS,
    11  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  See the License for the specific language governing permissions and
    13  limitations under the License.
    14  ==============================================================================*/
    15  
    16  // Declarations for 2D FFT routines in third_party/fft2d/fft2d.
    17  
    18  #ifndef FFT2D_FFT_H__
    19  #define FFT2D_FFT_H__
    20  
    21  #ifdef __cplusplus
    22  extern "C" {
    23  #endif
    24  
    25  extern void cdft2d(int, int, int, double **, double *, int *, double *);
    26  extern void rdft2d(int, int, int, double **, double *, int *, double *);
    27  extern void ddct2d(int, int, int, double **, double *, int *, double *);
    28  extern void ddst2d(int, int, int, double **, double *, int *, double *);
    29  extern void ddct8x8s(int isgn, double **a);
    30  extern void ddct16x16s(int isgn, double **a);
    31  
    32  #ifdef __cplusplus
    33  }
    34  #endif
    35  
    36  #endif  // FFT2D_FFT_H__