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63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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_BUFFERSINK_H
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#define AVFILTER_BUFFERSINK_H
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/**
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* @file
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* memory buffer sink API
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*/
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#include "avfilter.h"
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/**
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* Get a buffer with filtered data from sink and put it in buf.
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*
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* @param sink pointer to a context of a buffersink or abuffersink AVFilter.
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* @param buf pointer to the buffer will be written here if buf is non-NULL. buf
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* must be freed by the caller using avfilter_unref_buffer().
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* Buf may also be NULL to query whether a buffer is ready to be
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* output.
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*
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* @return >= 0 in case of success, a negative AVERROR code in case of
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* failure.
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*/
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int av_buffersink_read(AVFilterContext *sink, AVFilterBufferRef **buf);
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/**
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* Same as av_buffersink_read, but with the ability to specify the number of
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* samples read. This function is less efficient than av_buffersink_read(),
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* because it copies the data around.
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*
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* @param sink pointer to a context of the abuffersink AVFilter.
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* @param buf pointer to the buffer will be written here if buf is non-NULL. buf
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* must be freed by the caller using avfilter_unref_buffer(). buf
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* will contain exactly nb_samples audio samples, except at the end
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* of stream, when it can contain less than nb_samples.
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* Buf may also be NULL to query whether a buffer is ready to be
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* output.
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*
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* @warning do not mix this function with av_buffersink_read(). Use only one or
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* the other with a single sink, not both.
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*/
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int av_buffersink_read_samples(AVFilterContext *ctx, AVFilterBufferRef **buf,
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int nb_samples);
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#endif /* AVFILTER_BUFFERSINK_H */
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