mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2026-11-06 05:17:42 +00:00
Michael Niedermayer
a3f1b1e87c
Both libavfilter and libswscale currently put framepool.o in their regular
OBJS, defining the same four ff_frame_pool_* symbols. Loading both static
archives in full therefore fails with multiple definitions.
Move the implementation and internal header to libavutil. Include the
object in its STLIBOBJS when either consumer is enabled, and use SHLIBOBJS
for the private copies in libavfilter and libswscale. This preserves
independent builds and shared-library symbol visibility without adding
an inter-library dependency or exposing a new public API.
Verified whole-archive links with both consumers, and with each consumer
configured independently. Shared builds pass fate-filter-rgbtestsrc-gbrp12
and fate-filter-rgbtestsrc-gbrap12; static and shared video scaling and
audio volume smoke tests produce identical frame checksums. Also checked
static consumers linked against shared dependencies.
Fixes: 6c89a30ecd
Fixes: #25419
Assisted-by: Fairy
110 lines
3.5 KiB
C
110 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 AVUTIL_FRAMEPOOL_H
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#define AVUTIL_FRAMEPOOL_H
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#include "buffer.h"
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#include "frame.h"
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#include "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 /* AVUTIL_FRAMEPOOL_H */
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