mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
02220b88fc
The majority of frame-threaded decoders (mainly the intra-only) need exactly one part of ThreadFrame: The AVFrame. They don't need the owners nor the progress, yet they had to use it because ff_thread_(get|release)_buffer() requires it. This commit changes this and makes these functions work with ordinary AVFrames; the decoders that need the extra fields for progress use ff_thread_(get|release)_ext_buffer() which work exactly as ff_thread_(get|release)_buffer() used to do. This also avoids some unnecessary allocations of progress AVBuffers, namely for H.264 and HEVC film grain frames: These frames are not used for synchronization and therefore don't need a ThreadFrame. Also move the ThreadFrame structure as well as ff_thread_ref_frame() to threadframe.h, the header for frame-threaded decoders with inter-frame dependencies. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/*
|
|
* 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 "libavutil/frame.h"
|
|
#include "avcodec.h"
|
|
|
|
typedef struct ThreadFrame {
|
|
AVFrame *f;
|
|
AVCodecContext *owner[2];
|
|
// progress->data is an array of 2 ints holding progress for top/bottom
|
|
// fields
|
|
AVBufferRef *progress;
|
|
} 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(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(AVCodecContext *avctx, ThreadFrame *f);
|
|
|
|
int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src);
|
|
|
|
#endif
|