variance.h - mozsearch

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/*

 *  Copyright (c) 2015 The WebM project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef VPX_VPX_DSP_VARIANCE_H_

#define VPX_VPX_DSP_VARIANCE_H_

#include "./vpx_config.h"

#include "vpx/vpx_integer.h"

#ifdef __cplusplus

extern "C" {

#endif

#define FILTER_BITS 7

#define FILTER_WEIGHT 128

typedef unsigned int (*vpx_sad_fn_t)(const uint8_t *src_ptr, int src_stride,

                                     const uint8_t *ref_ptr, int ref_stride);

typedef unsigned int (*vpx_sad_avg_fn_t)(const uint8_t *src_ptr, int src_stride,

                                         const uint8_t *ref_ptr, int ref_stride,

                                         const uint8_t *second_pred);

typedef void (*vp8_copy32xn_fn_t)(const uint8_t *src_ptr, int src_stride,

                                  uint8_t *ref_ptr, int ref_stride, int n);

typedef void (*vpx_sad_multi_fn_t)(const uint8_t *src_ptr, int src_stride,

                                   const uint8_t *ref_ptr, int ref_stride,

                                   unsigned int *sad_array);

typedef void (*vpx_sad_multi_d_fn_t)(const uint8_t *src_ptr, int src_stride,

                                     const uint8_t *const b_array[],

                                     int ref_stride, unsigned int *sad_array);

typedef unsigned int (*vpx_variance_fn_t)(const uint8_t *src_ptr,

                                          int src_stride,

                                          const uint8_t *ref_ptr,

                                          int ref_stride, unsigned int *sse);

typedef unsigned int (*vpx_subpixvariance_fn_t)(

    const uint8_t *src_ptr, int src_stride, int x_offset, int y_offset,

    const uint8_t *ref_ptr, int ref_stride, unsigned int *sse);

typedef unsigned int (*vpx_subp_avg_variance_fn_t)(

    const uint8_t *src_ptr, int src_stride, int x_offset, int y_offset,

    const uint8_t *ref_ptr, int ref_stride, unsigned int *sse,

    const uint8_t *second_pred);

#if CONFIG_VP8

typedef struct variance_vtable {

  vpx_sad_fn_t sdf;

  vpx_variance_fn_t vf;

  vpx_subpixvariance_fn_t svf;

  vpx_sad_multi_d_fn_t sdx4df;

#if VPX_ARCH_X86 || VPX_ARCH_X86_64

  vp8_copy32xn_fn_t copymem;

#endif

} vp8_variance_fn_ptr_t;

#endif  // CONFIG_VP8

#if CONFIG_VP9

typedef struct vp9_variance_vtable {

  vpx_sad_fn_t sdf;

  // Same as normal sad, but downsample the rows by a factor of 2.

  vpx_sad_fn_t sdsf;

  vpx_sad_avg_fn_t sdaf;

  vpx_variance_fn_t vf;

  vpx_subpixvariance_fn_t svf;

  vpx_subp_avg_variance_fn_t svaf;

  vpx_sad_multi_d_fn_t sdx4df;

  // Same as sadx4, but downsample the rows by a factor of 2.

  vpx_sad_multi_d_fn_t sdsx4df;

} vp9_variance_fn_ptr_t;

#endif  // CONFIG_VP9

#ifdef __cplusplus

}  // extern "C"

#endif

#endif  // VPX_VPX_DSP_VARIANCE_H_