зеркало из https://github.com/mozilla/gecko-dev.git
123 строки
3.3 KiB
C
123 строки
3.3 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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/*!\file
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* \brief Describes film grain parameters and film grain synthesis
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*
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*/
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#ifndef AOM_AOM_DSP_GRAIN_SYNTHESIS_H_
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#define AOM_AOM_DSP_GRAIN_SYNTHESIS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "aom_dsp/aom_dsp_common.h"
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#include "aom/aom_image.h"
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/*!\brief Structure containing film grain synthesis parameters for a frame
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*
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* This structure contains input parameters for film grain synthesis
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*/
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typedef struct {
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int apply_grain;
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int update_parameters;
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// 8 bit values
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int scaling_points_y[14][2];
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int num_y_points; // value: 0..14
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// 8 bit values
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int scaling_points_cb[10][2];
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int num_cb_points; // value: 0..10
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// 8 bit values
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int scaling_points_cr[10][2];
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int num_cr_points; // value: 0..10
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int scaling_shift; // values : 8..11
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int ar_coeff_lag; // values: 0..3
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// 8 bit values
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int ar_coeffs_y[24];
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int ar_coeffs_cb[25];
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int ar_coeffs_cr[25];
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// Shift value: AR coeffs range
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// 6: [-2, 2)
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// 7: [-1, 1)
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// 8: [-0.5, 0.5)
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// 9: [-0.25, 0.25)
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int ar_coeff_shift; // values : 6..9
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int cb_mult; // 8 bits
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int cb_luma_mult; // 8 bits
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int cb_offset; // 9 bits
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int cr_mult; // 8 bits
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int cr_luma_mult; // 8 bits
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int cr_offset; // 9 bits
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int overlap_flag;
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int clip_to_restricted_range;
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unsigned int bit_depth; // video bit depth
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int chroma_scaling_from_luma;
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int grain_scale_shift;
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uint16_t random_seed;
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} aom_film_grain_t;
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/*!\brief Add film grain
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*
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* Add film grain to an image
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*
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* Returns 0 for success, -1 for failure
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*
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* \param[in] grain_params Grain parameters
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* \param[in] luma luma plane
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* \param[in] cb cb plane
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* \param[in] cr cr plane
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* \param[in] height luma plane height
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* \param[in] width luma plane width
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* \param[in] luma_stride luma plane stride
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* \param[in] chroma_stride chroma plane stride
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*/
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int av1_add_film_grain_run(const aom_film_grain_t *grain_params, uint8_t *luma,
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uint8_t *cb, uint8_t *cr, int height, int width,
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int luma_stride, int chroma_stride,
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int use_high_bit_depth, int chroma_subsamp_y,
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int chroma_subsamp_x, int mc_identity);
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/*!\brief Add film grain
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*
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* Add film grain to an image
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*
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* Returns 0 for success, -1 for failure
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*
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* \param[in] grain_params Grain parameters
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* \param[in] src Source image
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* \param[out] dst Resulting image with grain
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*/
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int av1_add_film_grain(const aom_film_grain_t *grain_params,
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const aom_image_t *src, aom_image_t *dst);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AOM_AOM_DSP_GRAIN_SYNTHESIS_H_
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