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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.
+ */
+
+/*!\file
+ * \brief Describes film grain parameters and film grain synthesis
+ *
+ */
+#ifndef AOM_AOM_DSP_GRAIN_SYNTHESIS_H_
+#define AOM_AOM_DSP_GRAIN_SYNTHESIS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom/aom_image.h"
+
+/*!\brief Structure containing film grain synthesis parameters for a frame
+ *
+ * This structure contains input parameters for film grain synthesis
+ */
+typedef struct {
+ int apply_grain;
+
+ int update_parameters;
+
+ // 8 bit values
+ int scaling_points_y[14][2];
+ int num_y_points; // value: 0..14
+
+ // 8 bit values
+ int scaling_points_cb[10][2];
+ int num_cb_points; // value: 0..10
+
+ // 8 bit values
+ int scaling_points_cr[10][2];
+ int num_cr_points; // value: 0..10
+
+ int scaling_shift; // values : 8..11
+
+ int ar_coeff_lag; // values: 0..3
+
+ // 8 bit values
+ int ar_coeffs_y[24];
+ int ar_coeffs_cb[25];
+ int ar_coeffs_cr[25];
+
+ // Shift value: AR coeffs range
+ // 6: [-2, 2)
+ // 7: [-1, 1)
+ // 8: [-0.5, 0.5)
+ // 9: [-0.25, 0.25)
+ int ar_coeff_shift; // values : 6..9
+
+ int cb_mult; // 8 bits
+ int cb_luma_mult; // 8 bits
+ int cb_offset; // 9 bits
+
+ int cr_mult; // 8 bits
+ int cr_luma_mult; // 8 bits
+ int cr_offset; // 9 bits
+
+ int overlap_flag;
+
+ int clip_to_restricted_range;
+
+ unsigned int bit_depth; // video bit depth
+
+ int chroma_scaling_from_luma;
+
+ int grain_scale_shift;
+
+ uint16_t random_seed;
+} aom_film_grain_t;
+
+/*!\brief Add film grain
+ *
+ * Add film grain to an image
+ *
+ * Returns 0 for success, -1 for failure
+ *
+ * \param[in] grain_params Grain parameters
+ * \param[in] luma luma plane
+ * \param[in] cb cb plane
+ * \param[in] cr cr plane
+ * \param[in] height luma plane height
+ * \param[in] width luma plane width
+ * \param[in] luma_stride luma plane stride
+ * \param[in] chroma_stride chroma plane stride
+ */
+int av1_add_film_grain_run(const aom_film_grain_t *grain_params, uint8_t *luma,
+ uint8_t *cb, uint8_t *cr, int height, int width,
+ int luma_stride, int chroma_stride,
+ int use_high_bit_depth, int chroma_subsamp_y,
+ int chroma_subsamp_x, int mc_identity);
+
+/*!\brief Add film grain
+ *
+ * Add film grain to an image
+ *
+ * Returns 0 for success, -1 for failure
+ *
+ * \param[in] grain_params Grain parameters
+ * \param[in] src Source image
+ * \param[out] dst Resulting image with grain
+ */
+int av1_add_film_grain(const aom_film_grain_t *grain_params,
+ const aom_image_t *src, aom_image_t *dst);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // AOM_AOM_DSP_GRAIN_SYNTHESIS_H_