3 * This file is part of Libav.
5 * Libav is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * Libav is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with Libav; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 #ifndef AVFILTER_BUFFERSRC_H
21 #define AVFILTER_BUFFERSRC_H
25 * @ingroup lavfi_buffersrc
26 * Memory buffer source API.
32 * @defgroup lavfi_buffersrc Buffer source API
37 #if FF_API_AVFILTERBUFFER
39 * Add a buffer to a filtergraph.
41 * @param ctx an instance of the buffersrc filter
42 * @param buf buffer containing frame data to be passed down the filtergraph.
43 * This function will take ownership of buf, the user must not free it.
44 * A NULL buf signals EOF -- i.e. no more frames will be sent to this filter.
46 * @deprecated use av_buffersrc_write_frame() or av_buffersrc_add_frame()
49 int av_buffersrc_buffer(AVFilterContext *ctx, AVFilterBufferRef *buf);
53 * Add a frame to the buffer source.
55 * @param ctx an instance of the buffersrc filter
56 * @param frame frame to be added. If the frame is reference counted, this
57 * function will make a new reference to it. Otherwise the frame data will be
60 * @return 0 on success, a negative AVERROR on error
62 int av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame);
65 * Add a frame to the buffer source.
67 * @param ctx an instance of the buffersrc filter
68 * @param frame frame to be added. If the frame is reference counted, this
69 * function will take ownership of the reference(s) and reset the frame.
70 * Otherwise the frame data will be copied. If this function returns an error,
71 * the input frame is not touched.
73 * @return 0 on success, a negative AVERROR on error.
75 * @note the difference between this function and av_buffersrc_write_frame() is
76 * that av_buffersrc_write_frame() creates a new reference to the input frame,
77 * while this function takes ownership of the reference passed to it.
79 int av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame);
85 #endif /* AVFILTER_BUFFERSRC_H */