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https://git.ffmpeg.org/ffmpeg.git
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fe2691b3bb
Saves a pointless free/alloc cycle on reinit. For the vast majority of filter links, this going to be allocated anyway; and on the occasions that it's not, the waste is marginal. Signed-off-by: Niklas Haas <git@haasn.dev>
109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* Copyright (c) 2015 Matthieu Bouron <matthieu.bouron stupeflix.com>
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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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#ifndef AVFILTER_FRAMEPOOL_H
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#define AVFILTER_FRAMEPOOL_H
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#include "libavutil/buffer.h"
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#include "libavutil/frame.h"
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#include "libavutil/internal.h"
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/**
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* Frame pool. This structure must be initialized with
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* ff_frame_pool_{video,audio}_reinit() and freed with ff_frame_pool_uninit().
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*/
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typedef struct FFFramePool {
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enum AVMediaType type;
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union {
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enum AVPixelFormat pix_fmt;
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enum AVSampleFormat sample_fmt;
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};
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/* video */
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int width;
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int height;
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/* audio */
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int planes;
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int channels;
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int nb_samples;
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/* common */
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int align;
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int linesize[4];
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AVBufferPool *pools[4]; /* for audio, only pools[0] is used */
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} FFFramePool;
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/**
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* Recreate the video frame pool if its current configuration differs from the
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* provided configuration. If initialization fails, the old pool is kept
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* unchanged.
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*
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* @param pool pointer to the frame pool to be (re)initialized
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* @param width width of each frame in this pool
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* @param height height of each frame in this pool
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* @param format format of each frame in this pool
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* @param align buffers alignment of each frame in this pool
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* @return 0 on success, a negative AVERROR otherwise.
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*/
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int ff_frame_pool_video_reinit(FFFramePool *pool,
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int width,
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int height,
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enum AVPixelFormat format,
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int align);
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/**
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* Recreate the audio frame pool if its current configuration differs from the
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* provided configuration. If initialization fails, the old pool is kept
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* unchanged.
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*
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* @param pool pointer to the frame pool to be (re)initialized
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* @param channels channels of each frame in this pool
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* @param nb_samples number of samples of each frame in this pool
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* @param format format of each frame in this pool
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* @param align buffers alignment of each frame in this pool
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* @return 0 on success, a negative AVERROR otherwise.
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*/
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int ff_frame_pool_audio_reinit(FFFramePool *pool,
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int channels,
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int nb_samples,
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enum AVSampleFormat format,
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int align);
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/**
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* Deallocate the frame pool. It is safe to call this function while
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* some of the allocated frame are still in use.
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*
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* @param pool pointer to the frame pool to be uninitialized
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*/
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void ff_frame_pool_uninit(FFFramePool *pool);
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/**
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* Allocate a new AVFrame, reusing old buffers from the pool when available.
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* This function may be called simultaneously from multiple threads.
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*
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* @return a new AVFrame on success, NULL on error.
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*/
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AVFrame *ff_frame_pool_get(FFFramePool *pool);
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#endif /* AVFILTER_FRAMEPOOL_H */
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