mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.5 KiB
86 lines
2.5 KiB
/* |
|
* |
|
* 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 "libavcodec/avcodec.h" |
|
#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 */
|
|
|