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/*
 * Copyright (c) 2022 Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 *
 * 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
 */

#ifndef AVCODEC_THREADFRAME_H
#define AVCODEC_THREADFRAME_H

#include "avcodec.h"
#include "thread.h"

/**
 * Notify later decoding threads when part of their reference picture is ready.
 * Call this when some part of the picture is finished decoding.
 * Later calls with lower values of progress have no effect.
 *
 * @param f The picture being decoded.
 * @param progress Value, in arbitrary units, of how much of the picture has decoded.
 * @param field The field being decoded, for field-picture codecs.
 * 0 for top field or frame pictures, 1 for bottom field.
 */
void ff_thread_report_progress(ThreadFrame *f, int progress, int field);

/**
 * Wait for earlier decoding threads to finish reference pictures.
 * Call this before accessing some part of a picture, with a given
 * value for progress, and it will return after the responsible decoding
 * thread calls ff_thread_report_progress() with the same or
 * higher value for progress.
 *
 * @param f The picture being referenced.
 * @param progress Value, in arbitrary units, to wait for.
 * @param field The field being referenced, for field-picture codecs.
 * 0 for top field or frame pictures, 1 for bottom field.
 */
void ff_thread_await_progress(ThreadFrame *f, int progress, int field);

#endif