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/*
* 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
*/
#include <string.h>
#include <stdio.h>
#include "libavutil/buffer.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
{
return ff_get_video_buffer(link->dst->outputs[0], w, h);
}
/* TODO: set the buffer's priv member to a context structure for the whole
* filter chain. This will allow for a buffer pool instead of the constant
* alloc & free cycle currently implemented. */
AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
{
AVFrame *frame = av_frame_alloc();
int ret;
if (!frame)
return NULL;
frame->width = w;
frame->height = h;
frame->format = link->format;
ret = av_frame_get_buffer(frame, 32);
if (ret < 0)
av_frame_free(&frame);
return frame;
}
AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
{
AVFrame *ret = NULL;
FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
if (link->dstpad->get_video_buffer)
ret = link->dstpad->get_video_buffer(link, w, h);
if (!ret)
ret = ff_default_get_video_buffer(link, w, h);
return ret;
}
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