libvpx: Add VP9 decoder.

source/libvpx/vp9/encoder/vp9_variance.h

+/*
+ *  Copyright (c) 2010 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 VP9_ENCODER_VP9_VARIANCE_H_
+#define VP9_ENCODER_VP9_VARIANCE_H_
+
+typedef unsigned int(*vp9_sad_fn_t)(const unsigned char *src_ptr,
+                                    int source_stride,
+                                    const unsigned char *ref_ptr,
+                                    int ref_stride,
+                                    unsigned int max_sad);
+
+typedef void (*vp9_copy32xn_fn_t)(const unsigned char *src_ptr,
+                                  int source_stride,
+                                  const unsigned char *ref_ptr,
+                                  int ref_stride,
+                                  int n);
+
+typedef void (*vp9_sad_multi_fn_t)(const unsigned char *src_ptr,
+                                   int source_stride,
+                                   const unsigned char *ref_ptr,
+                                   int  ref_stride,
+                                   unsigned int *sad_array);
+
+typedef void (*vp9_sad_multi1_fn_t)(const unsigned char *src_ptr,
+                                    int source_stride,
+                                    const unsigned char *ref_ptr,
+                                    int  ref_stride,
+                                    unsigned short *sad_array);
+
+typedef void (*vp9_sad_multi_d_fn_t)(const unsigned char *src_ptr,
+                                     int source_stride,
+                                     const unsigned char ** ref_ptr,
+                                     int  ref_stride, unsigned int *sad_array);
+
+typedef unsigned int (*vp9_variance_fn_t)(const unsigned char *src_ptr,
+                                          int source_stride,
+                                          const unsigned char *ref_ptr,
+                                          int ref_stride,
+                                          unsigned int *sse);
+
+typedef unsigned int (*vp9_subpixvariance_fn_t)(const unsigned char  *src_ptr,
+                                                int source_stride,
+                                                int xoffset,
+                                                int yoffset,
+                                                const unsigned char *ref_ptr,
+                                                int Refstride,
+                                                unsigned int *sse);
+
+typedef void (*vp9_ssimpf_fn_t)(unsigned char *s, int sp, unsigned char *r,
+                                int rp, unsigned long *sum_s,
+                                unsigned long *sum_r, unsigned long *sum_sq_s,
+                                unsigned long *sum_sq_r,
+                                unsigned long *sum_sxr);
+
+typedef unsigned int (*vp9_getmbss_fn_t)(const short *);
+
+typedef unsigned int (*vp9_get16x16prederror_fn_t)(const unsigned char *src_ptr,
+                                                   int source_stride,
+                                                   const unsigned char *ref_ptr,
+                                                   int  ref_stride);
+
+typedef struct variance_vtable {
+    vp9_sad_fn_t            sdf;
+    vp9_variance_fn_t       vf;
+    vp9_subpixvariance_fn_t svf;
+    vp9_variance_fn_t       svf_halfpix_h;
+    vp9_variance_fn_t       svf_halfpix_v;
+    vp9_variance_fn_t       svf_halfpix_hv;
+    vp9_sad_multi_fn_t      sdx3f;
+    vp9_sad_multi1_fn_t     sdx8f;
+    vp9_sad_multi_d_fn_t    sdx4df;
+    vp9_copy32xn_fn_t       copymem;
+} vp9_variance_fn_ptr_t;
+
+#endif