1 files changed, 88 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/variance.h b/media/libvpx/libvpx/vpx_dsp/variance.h
new file mode 100644
index 0000000000..ccdb2f90ba
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/variance.h
@@ -0,0 +1,88 @@
+/*
+ *  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_