Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

third_party/aom/aom_dsp/variance.h

@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_DSP_VARIANCE_H_
+#define AOM_DSP_VARIANCE_H_
+
+#include "./aom_config.h"
+
+#include "aom/aom_integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FILTER_BITS 7
+#define FILTER_WEIGHT 128
+
+typedef unsigned int (*aom_sad_fn_t)(const uint8_t *a, int a_stride,
+                                     const uint8_t *b, int b_stride);
+
+typedef unsigned int (*aom_sad_avg_fn_t)(const uint8_t *a, int a_stride,
+                                         const uint8_t *b, int b_stride,
+                                         const uint8_t *second_pred);
+
+typedef void (*aom_copy32xn_fn_t)(const uint8_t *a, int a_stride, uint8_t *b,
+                                  int b_stride, int n);
+
+typedef void (*aom_sad_multi_fn_t)(const uint8_t *a, int a_stride,
+                                   const uint8_t *b, int b_stride,
+                                   unsigned int *sad_array);
+
+typedef void (*aom_sad_multi_d_fn_t)(const uint8_t *a, int a_stride,
+                                     const uint8_t *const b_array[],
+                                     int b_stride, unsigned int *sad_array);
+
+typedef unsigned int (*aom_variance_fn_t)(const uint8_t *a, int a_stride,
+                                          const uint8_t *b, int b_stride,
+                                          unsigned int *sse);
+
+typedef unsigned int (*aom_subpixvariance_fn_t)(const uint8_t *a, int a_stride,
+                                                int xoffset, int yoffset,
+                                                const uint8_t *b, int b_stride,
+                                                unsigned int *sse);
+
+typedef unsigned int (*aom_subp_avg_variance_fn_t)(
+    const uint8_t *a, int a_stride, int xoffset, int yoffset, const uint8_t *b,
+    int b_stride, unsigned int *sse, const uint8_t *second_pred);
+
+#if CONFIG_AV1 && CONFIG_EXT_INTER
+typedef unsigned int (*aom_masked_sad_fn_t)(const uint8_t *src, int src_stride,
+                                            const uint8_t *ref, int ref_stride,
+                                            const uint8_t *msk_ptr,
+                                            int msk_stride);
+typedef unsigned int (*aom_masked_variance_fn_t)(
+    const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride,
+    const uint8_t *msk, int msk_stride, unsigned int *sse);
+typedef unsigned int (*aom_masked_subpixvariance_fn_t)(
+    const uint8_t *src, int src_stride, int xoffset, int yoffset,
+    const uint8_t *ref, int ref_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse);
+#endif  // CONFIG_AV1 && CONFIG_EXT_INTER
+
+#if CONFIG_AV1 && CONFIG_MOTION_VAR
+typedef unsigned int (*aom_obmc_sad_fn_t)(const uint8_t *pred, int pred_stride,
+                                          const int32_t *wsrc,
+                                          const int32_t *msk);
+typedef unsigned int (*aom_obmc_variance_fn_t)(const uint8_t *pred,
+                                               int pred_stride,
+                                               const int32_t *wsrc,
+                                               const int32_t *msk,
+                                               unsigned int *sse);
+typedef unsigned int (*aom_obmc_subpixvariance_fn_t)(
+    const uint8_t *pred, int pred_stride, int xoffset, int yoffset,
+    const int32_t *wsrc, const int32_t *msk, unsigned int *sse);
+#endif  // CONFIG_AV1 && CONFIG_MOTION_VAR
+
+#if CONFIG_AV1
+typedef struct aom_variance_vtable {
+  aom_sad_fn_t sdf;
+  aom_sad_avg_fn_t sdaf;
+  aom_variance_fn_t vf;
+  aom_subpixvariance_fn_t svf;
+  aom_subp_avg_variance_fn_t svaf;
+  aom_sad_multi_fn_t sdx3f;
+  aom_sad_multi_fn_t sdx8f;
+  aom_sad_multi_d_fn_t sdx4df;
+#if CONFIG_EXT_INTER
+  aom_masked_sad_fn_t msdf;
+  aom_masked_variance_fn_t mvf;
+  aom_masked_subpixvariance_fn_t msvf;
+#endif  // CONFIG_EXT_INTER
+#if CONFIG_MOTION_VAR
+  aom_obmc_sad_fn_t osdf;
+  aom_obmc_variance_fn_t ovf;
+  aom_obmc_subpixvariance_fn_t osvf;
+#endif  // CONFIG_MOTION_VAR
+} aom_variance_fn_ptr_t;
+#endif  // CONFIG_AV1
+
+void aom_highbd_var_filter_block2d_bil_first_pass(
+    const uint8_t *src_ptr8, uint16_t *output_ptr,
+    unsigned int src_pixels_per_line, int pixel_step,
+    unsigned int output_height, unsigned int output_width,
+    const uint8_t *filter);
+
+void aom_highbd_var_filter_block2d_bil_second_pass(
+    const uint16_t *src_ptr, uint16_t *output_ptr,
+    unsigned int src_pixels_per_line, unsigned int pixel_step,
+    unsigned int output_height, unsigned int output_width,
+    const uint8_t *filter);
+
+uint32_t aom_sse_odd_size(const uint8_t *a, int a_stride, const uint8_t *b,
+                          int b_stride, int w, int h);
+
+#if CONFIG_HIGHBITDEPTH
+uint64_t aom_highbd_sse_odd_size(const uint8_t *a, int a_stride,
+                                 const uint8_t *b, int b_stride, int w, int h);
+#endif  // CONFIG_HIGHBITDEPTH
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_DSP_VARIANCE_H_