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20f9727018
Up until now, codec.h contains both public and private parts of AVCodec. This exposes the internals of AVCodec to users and leads them into the temptation of actually using them and forces us to forward-declare structures and types that users can't use at all. This commit changes this by adding a new structure FFCodec to codec_internal.h that extends AVCodec, i.e. contains the public AVCodec as first member; the private fields of AVCodec are moved to this structure, leaving codec.h clean. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*
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* Copyright (c) 2008 Alexander Strange <astrange@ithinksw.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Multithreading support functions
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* @author Alexander Strange <astrange@ithinksw.com>
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*/
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#ifndef AVCODEC_THREAD_H
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#define AVCODEC_THREAD_H
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#include "libavutil/buffer.h"
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#include "avcodec.h"
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/**
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* Wait for decoding threads to finish and reset internal state.
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* Called by avcodec_flush_buffers().
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*
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* @param avctx The context.
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*/
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void ff_thread_flush(AVCodecContext *avctx);
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/**
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* Submit a new frame to a decoding thread.
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* Returns the next available frame in picture. *got_picture_ptr
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* will be 0 if none is available.
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* The return value on success is the size of the consumed packet for
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* compatibility with FFCodec.decode. This means the decoder
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* has to consume the full packet.
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*
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* Parameters are the same as FFCodec.decode.
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*/
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int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture,
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int *got_picture_ptr, AVPacket *avpkt);
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/**
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* If the codec defines update_thread_context(), call this
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* when they are ready for the next thread to start decoding
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* the next frame. After calling it, do not change any variables
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* read by the update_thread_context() method, or call ff_thread_get_buffer().
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*
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* @param avctx The context.
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*/
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void ff_thread_finish_setup(AVCodecContext *avctx);
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#if FF_API_THREAD_SAFE_CALLBACKS
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/**
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* Wrapper around get_format() for frame-multithreaded codecs.
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* Call this function instead of avctx->get_format().
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* Cannot be called after the codec has called ff_thread_finish_setup().
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*
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* @param avctx The current context.
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* @param fmt The list of available formats.
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*/
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enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt);
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#else
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#define ff_thread_get_format ff_get_format
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#endif
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/**
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* Wrapper around get_buffer() for frame-multithreaded codecs.
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* Call this function instead of ff_get_buffer(f).
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* Cannot be called after the codec has called ff_thread_finish_setup().
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*
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* @param avctx The current context.
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* @param f The frame to write into.
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*/
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int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f, int flags);
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/**
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* Wrapper around release_buffer() frame-for multithreaded codecs.
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* Call this function instead of avctx->release_buffer(f).
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* The AVFrame will be copied and the actual release_buffer() call
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* will be performed later. The contents of data pointed to by the
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* AVFrame should not be changed until ff_thread_get_buffer() is called
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* on it.
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*
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* @param avctx The current context.
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* @param f The picture being released.
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*/
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void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f);
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int ff_thread_init(AVCodecContext *s);
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int ff_slice_thread_execute_with_mainfunc(AVCodecContext *avctx,
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int (*action_func2)(AVCodecContext *c, void *arg, int jobnr, int threadnr),
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int (*main_func)(AVCodecContext *c), void *arg, int *ret, int job_count);
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void ff_thread_free(AVCodecContext *s);
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int ff_alloc_entries(AVCodecContext *avctx, int count);
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void ff_reset_entries(AVCodecContext *avctx);
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void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n);
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void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift);
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#endif /* AVCODEC_THREAD_H */
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