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diff --git a/media/libaom/src/aom_scale/yv12config.h b/media/libaom/src/aom_scale/yv12config.h
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+/*
+ * 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_AOM_SCALE_YV12CONFIG_H_
+#define AOM_AOM_SCALE_YV12CONFIG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "config/aom_config.h"
+
+#include "aom/aom_codec.h"
+#include "aom/aom_frame_buffer.h"
+#include "aom/aom_integer.h"
+
+#define AOMINNERBORDERINPIXELS 160
+#define AOM_INTERP_EXTEND 4
+
+// TODO(jingning): Use unified inter predictor for encoder and
+// decoder during the development process. Revisit the frame border
+// to improve the decoder performance.
+#if CONFIG_REDUCED_ENCODER_BORDER
+#define AOM_BORDER_IN_PIXELS 160
+#else
+#define AOM_BORDER_IN_PIXELS 288
+#endif // CONFIG_REDUCED_ENCODER_BORDER
+
+typedef struct yv12_buffer_config {
+ union {
+ struct {
+ int y_width;
+ int uv_width;
+ int alpha_width;
+ };
+ int widths[3];
+ };
+ union {
+ struct {
+ int y_height;
+ int uv_height;
+ int alpha_height;
+ };
+ int heights[3];
+ };
+ union {
+ struct {
+ int y_crop_width;
+ int uv_crop_width;
+ };
+ int crop_widths[2];
+ };
+ union {
+ struct {
+ int y_crop_height;
+ int uv_crop_height;
+ };
+ int crop_heights[2];
+ };
+ union {
+ struct {
+ int y_stride;
+ int uv_stride;
+ int alpha_stride;
+ };
+ int strides[3];
+ };
+ union {
+ struct {
+ uint8_t *y_buffer;
+ uint8_t *u_buffer;
+ uint8_t *v_buffer;
+ uint8_t *alpha_buffer;
+ };
+ uint8_t *buffers[4];
+ };
+
+ // Indicate whether y_buffer, u_buffer, and v_buffer points to the internally
+ // allocated memory or external buffers.
+ int use_external_reference_buffers;
+ // This is needed to store y_buffer, u_buffer, and v_buffer when set reference
+ // uses an external refernece, and restore those buffer pointers after the
+ // external reference frame is no longer used.
+ uint8_t *store_buf_adr[3];
+
+ // If the frame is stored in a 16-bit buffer, this stores an 8-bit version
+ // for use in global motion detection. It is allocated on-demand.
+ uint8_t *y_buffer_8bit;
+ int buf_8bit_valid;
+
+ uint8_t *buffer_alloc;
+ size_t buffer_alloc_sz;
+ int border;
+ size_t frame_size;
+ int subsampling_x;
+ int subsampling_y;
+ unsigned int bit_depth;
+ aom_color_primaries_t color_primaries;
+ aom_transfer_characteristics_t transfer_characteristics;
+ aom_matrix_coefficients_t matrix_coefficients;
+ int monochrome;
+ aom_chroma_sample_position_t chroma_sample_position;
+ aom_color_range_t color_range;
+ int render_width;
+ int render_height;
+
+ int corrupted;
+ int flags;
+} YV12_BUFFER_CONFIG;
+
+#define YV12_FLAG_HIGHBITDEPTH 8
+
+int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
+ int ss_x, int ss_y, int use_highbitdepth, int border,
+ int byte_alignment);
+
+// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
+// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
+// NULL, then libaom is using the frame buffer callbacks to handle memory.
+// If cb is not NULL, libaom will call cb with minimum size in bytes needed
+// to decode the current frame. If cb is NULL, libaom will allocate memory
+// internally to decode the current frame. Returns 0 on success. Returns < 0
+// on failure.
+int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
+ int ss_x, int ss_y, int use_highbitdepth,
+ int border, int byte_alignment,
+ aom_codec_frame_buffer_t *fb,
+ aom_get_frame_buffer_cb_fn_t cb, void *cb_priv);
+int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // AOM_AOM_SCALE_YV12CONFIG_H_