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62 lines
2.4 KiB
62 lines
2.4 KiB
/* |
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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 ctx 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 *ctx, 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 ctx 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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