/*

 * H.274 film grain synthesis

 * Copyright (c) 2021 Niklas Haas <ffmpeg@haasn.xyz>

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

/**

 * @file

 * H.274 film grain synthesis.

 * @author Niklas Haas <ffmpeg@haasn.xyz>

 */

#ifndef AVCODEC_H274_H

#define AVCODEC_H274_H

#include "libavutil/film_grain_params.h"

/**

 * Check whether ff_h274_apply_film_grain() supports the given parameter combination.

 *

 * @param model_id model_id from AVFilmGrainParams to be supplied

 * @param pix_fmt  pixel format of the frames to be supplied

 */

static inline int ff_h274_film_grain_params_supported(int model_id, enum AVPixelFormat pix_fmt)

{

    return model_id == 0 && pix_fmt == AV_PIX_FMT_YUV420P;

}

Unexecuted instantiation: h264_picture.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: h274.c:ff_h274_film_grain_params_supported

hevcdec.c:ff_h274_film_grain_params_supported

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{

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    return model_id == 0 && pix_fmt == AV_PIX_FMT_YUV420P;

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770

}

Unexecuted instantiation: dec.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: dsp.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: intra_utils.c:ff_h274_film_grain_params_supported

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Unexecuted instantiation: sei.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: thread.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: ctu.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: filter.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: inter.c:ff_h274_film_grain_params_supported

Unexecuted instantiation: intra.c:ff_h274_film_grain_params_supported

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Unexecuted instantiation: cabac.c:ff_h274_film_grain_params_supported

// Synthesizes film grain on top of `in` and stores the result to `out`. `out`

// must already have been allocated and set to the same size and format as

// `in`.

//

// Returns a negative error code on error, such as invalid params.

// If ff_h274_film_grain_params_supported() indicated that the parameters

// are supported, no error will be returned if the arguments given to

// ff_h274_film_grain_params_supported() coincide with actual values

// from the frames and params.

int ff_h274_apply_film_grain(AVFrame *out, const AVFrame *in,

                             const AVFilmGrainParams *params);

typedef struct H274HashContext H274HashContext;

typedef struct H274SEIPictureHash {

    int present;

    union {

        uint8_t  md5[3][16];

        uint16_t crc[3];

        uint32_t checksum[3];

    };

    uint8_t hash_type;

} H274SEIPictureHash;

int ff_h274_hash_init(H274HashContext **c, int type);

int ff_h274_hash_verify(H274HashContext *c, const H274SEIPictureHash *hash,

    const AVFrame *frame, int coded_width, int coded_height);

void ff_h274_hash_freep(H274HashContext **c);

typedef struct H274SEIFrameFieldInfo {

    int present;

    int picture_struct;

    uint8_t display_elemental_periods;

    uint8_t source_scan_type;

    uint8_t duplicate_flag;

} H274SEIFrameFieldInfo;

#endif /* AVCODEC_H274_H */