/* * Copyright (c) 2022 Andreas Rheinhardt <[email protected]> * * 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 "libavutil/frame.h" #include "avcodec.h" ThreadFrame; /** * 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(const ThreadFrame *f, int progress, int field); /** * Wrapper around ff_get_buffer() for frame-multithreaded codecs. * Call this function instead of ff_get_buffer() if you might need * to wait for progress on this frame. * Cannot be called after the codec has called ff_thread_finish_setup(). * * @param avctx The current context. * @param f The frame to write into. * @note: It is fine to call this with codecs that do not support * frame threading. */ int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags); /** * Unref a ThreadFrame. * * This is basically a wrapper around av_frame_unref() and should * be called instead of it. * * @param avctx The current context. * @param f The picture being released. */ void ff_thread_release_ext_buffer(ThreadFrame *f); int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src); int ff_thread_replace_frame(ThreadFrame *dst, const ThreadFrame *src); #endif
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