123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159 |
- /*
- * 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
- *
- */
- #ifndef AOM_AOM_DSP_GRAIN_PARAMS_H_
- #define AOM_AOM_DSP_GRAIN_PARAMS_H_
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include <stdint.h>
- #include <string.h>
- #include "config/aom_config.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
- // aom_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
- // aom_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 aom_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;
- }
- #ifdef __cplusplus
- } // extern "C"
- #endif
- #endif // AOM_AOM_DSP_GRAIN_PARAMS_H_
|