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100 lines
3.5 KiB
100 lines
3.5 KiB
/* |
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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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#define ff_thread_get_format ff_get_format |
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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_slice_thread_allocz_entries(AVCodecContext *avctx, int count); |
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int ff_slice_thread_init_progress(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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