/* * 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 #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 { // This structure is compared element-by-element in the function // av1_check_grain_params_equiv: this function must be updated if any changes // are made to this structure. 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; // This structure is compared element-by-element in the function // av1_check_grain_params_equiv: this function must be updated if any changes // are made to this structure. } aom_film_grain_t; /*!\brief Check if two film grain parameters structs are equivalent * * Check if two film grain parameters are equal, except for the * update_parameters and random_seed elements which are ignored. * * \param[in] pa The first set of parameters to compare * \param[in] pb The second set of parameters to compare * \return Returns 1 if the params are equivalent, 0 otherwise */ static INLINE int av1_check_grain_params_equiv( const aom_film_grain_t *const pa, const aom_film_grain_t *const pb) { if (pa->apply_grain != pb->apply_grain) return 0; // Don't compare update_parameters if (pa->num_y_points != pb->num_y_points) return 0; if (memcmp(pa->scaling_points_y, pb->scaling_points_y, pa->num_y_points * 2 * sizeof(*pa->scaling_points_y)) != 0) return 0; if (pa->num_cb_points != pb->num_cb_points) return 0; if (memcmp(pa->scaling_points_cb, pb->scaling_points_cb, pa->num_cb_points * 2 * sizeof(*pa->scaling_points_cb)) != 0) return 0; if (pa->num_cr_points != pb->num_cr_points) return 0; if (memcmp(pa->scaling_points_cr, pb->scaling_points_cr, pa->num_cr_points * 2 * sizeof(*pa->scaling_points_cr)) != 0) return 0; if (pa->scaling_shift != pb->scaling_shift) return 0; if (pa->ar_coeff_lag != pb->ar_coeff_lag) return 0; const int num_pos = 2 * pa->ar_coeff_lag * (pa->ar_coeff_lag + 1); if (memcmp(pa->ar_coeffs_y, pb->ar_coeffs_y, num_pos * sizeof(*pa->ar_coeffs_y)) != 0) return 0; if (memcmp(pa->ar_coeffs_cb, pb->ar_coeffs_cb, num_pos * sizeof(*pa->ar_coeffs_cb)) != 0) return 0; if (memcmp(pa->ar_coeffs_cr, pb->ar_coeffs_cr, num_pos * sizeof(*pa->ar_coeffs_cr)) != 0) return 0; if (pa->ar_coeff_shift != pb->ar_coeff_shift) return 0; if (pa->cb_mult != pb->cb_mult) return 0; if (pa->cb_luma_mult != pb->cb_luma_mult) return 0; if (pa->cb_offset != pb->cb_offset) return 0; if (pa->cr_mult != pb->cr_mult) return 0; if (pa->cr_luma_mult != pb->cr_luma_mult) return 0; if (pa->cr_offset != pb->cr_offset) return 0; if (pa->overlap_flag != pb->overlap_flag) return 0; if (pa->clip_to_restricted_range != pb->clip_to_restricted_range) return 0; if (pa->bit_depth != pb->bit_depth) return 0; if (pa->chroma_scaling_from_luma != pb->chroma_scaling_from_luma) return 0; if (pa->grain_scale_shift != pb->grain_scale_shift) return 0; return 1; } /*!\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_