| /* |
| * |
| * This file is part of Libav. |
| * |
| * Libav is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * Libav is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with Libav; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVFILTER_BUFFERSRC_H |
| #define AVFILTER_BUFFERSRC_H |
| |
| /** |
| * @file |
| * Memory buffer source API. |
| */ |
| |
| #include "avfilter.h" |
| |
| enum { |
| |
| /** |
| * Do not check for format changes. |
| */ |
| AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT = 1, |
| |
| /** |
| * Do not copy buffer data. |
| */ |
| AV_BUFFERSRC_FLAG_NO_COPY = 2, |
| |
| }; |
| |
| /** |
| * Add buffer data in picref to buffer_src. |
| * |
| * @param buffer_src pointer to a buffer source context |
| * @param picref a buffer reference, or NULL to mark EOF |
| * @param flags a combination of AV_BUFFERSRC_FLAG_* |
| * @return >= 0 in case of success, a negative AVERROR code |
| * in case of failure |
| */ |
| int av_buffersrc_add_ref(AVFilterContext *buffer_src, |
| AVFilterBufferRef *picref, int flags); |
| |
| /** |
| * Get the number of failed requests. |
| * |
| * A failed request is when the request_frame method is called while no |
| * frame is present in the buffer. |
| * The number is reset when a frame is added. |
| */ |
| unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src); |
| |
| /** |
| * Add a buffer to the filtergraph s. |
| * |
| * @param buf buffer containing frame data to be passed down the filtergraph. |
| * This function will take ownership of buf, the user must not free it. |
| * A NULL buf signals EOF -- i.e. no more frames will be sent to this filter. |
| */ |
| int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf); |
| |
| /** |
| * Add a frame to the buffer source. |
| * |
| * @param s an instance of the buffersrc filter. |
| * @param frame frame to be added. |
| * |
| * @warning frame data will be memcpy()ed, which may be a big performance |
| * hit. Use av_buffersrc_buffer() to avoid copying the data. |
| */ |
| int av_buffersrc_write_frame(AVFilterContext *s, AVFrame *frame); |
| |
| #endif /* AVFILTER_BUFFERSRC_H */ |