2 * This file is part of Libav.
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/buffer.h"
23 #include "libavutil/hwcontext.h"
24 #include "libavutil/imgutils.h"
25 #include "libavutil/mem.h"
31 AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
33 return ff_get_video_buffer(link->dst->outputs[0], w, h);
36 /* TODO: set the buffer's priv member to a context structure for the whole
37 * filter chain. This will allow for a buffer pool instead of the constant
38 * alloc & free cycle currently implemented. */
39 AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
41 AVFrame *frame = av_frame_alloc();
47 if (link->hw_frames_ctx &&
48 ((AVHWFramesContext*)link->hw_frames_ctx->data)->format == link->format) {
49 ret = av_hwframe_get_buffer(link->hw_frames_ctx, frame, 0);
53 frame->format = link->format;
55 ret = av_frame_get_buffer(frame, 32);
58 av_frame_free(&frame);
63 AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
67 FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
69 if (link->dstpad->get_video_buffer)
70 ret = link->dstpad->get_video_buffer(link, w, h);
73 ret = ff_default_get_video_buffer(link, w, h);