mirror of
https://github.com/FFmpeg/FFmpeg.git
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77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include <stdio.h>
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#include "libavutil/buffer.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/mem.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "video.h"
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AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
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{
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return ff_get_video_buffer(link->dst->outputs[0], w, h);
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}
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/* TODO: set the buffer's priv member to a context structure for the whole
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* filter chain. This will allow for a buffer pool instead of the constant
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* alloc & free cycle currently implemented. */
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AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
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{
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AVFrame *frame = av_frame_alloc();
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int ret;
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if (!frame)
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return NULL;
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if (link->hw_frames_ctx &&
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((AVHWFramesContext*)link->hw_frames_ctx->data)->format == link->format) {
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ret = av_hwframe_get_buffer(link->hw_frames_ctx, frame, 0);
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} else {
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frame->width = w;
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frame->height = h;
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frame->format = link->format;
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ret = av_frame_get_buffer(frame, 32);
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}
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if (ret < 0)
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av_frame_free(&frame);
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return frame;
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}
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AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
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{
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AVFrame *ret = NULL;
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FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
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if (link->dstpad->get_video_buffer)
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ret = link->dstpad->get_video_buffer(link, w, h);
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if (!ret)
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ret = ff_default_get_video_buffer(link, w, h);
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return ret;
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}
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