mirror of
https://github.com/FFmpeg/FFmpeg.git
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111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/*
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* Copyright 2007 Bobby Bingham
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* Copyright Stefano Sabatini <stefasab gmail com>
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* Copyright Vitor Sessak <vitor1001 gmail com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "avfilter.h"
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#include "internal.h"
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#include "video.h"
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#define BUFFER_ALIGN 32
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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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AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
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{
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AVFrame *frame = NULL;
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int pool_width = 0;
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int pool_height = 0;
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int pool_align = 0;
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enum AVPixelFormat pool_format = AV_PIX_FMT_NONE;
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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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int ret;
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AVFrame *frame = av_frame_alloc();
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if (!frame)
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return NULL;
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ret = av_hwframe_get_buffer(link->hw_frames_ctx, frame, 0);
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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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if (!link->frame_pool) {
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link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
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link->format, BUFFER_ALIGN);
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if (!link->frame_pool)
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return NULL;
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} else {
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if (ff_frame_pool_get_video_config(link->frame_pool,
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&pool_width, &pool_height,
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&pool_format, &pool_align) < 0) {
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return NULL;
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}
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if (pool_width != w || pool_height != h ||
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pool_format != link->format || pool_align != BUFFER_ALIGN) {
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ff_frame_pool_uninit((FFFramePool **)&link->frame_pool);
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link->frame_pool = ff_frame_pool_video_init(av_buffer_allocz, w, h,
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link->format, BUFFER_ALIGN);
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if (!link->frame_pool)
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return NULL;
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}
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}
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frame = ff_frame_pool_get(link->frame_pool);
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if (!frame)
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return NULL;
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frame->sample_aspect_ratio = link->sample_aspect_ratio;
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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_TPRINTF_START(NULL, get_video_buffer); ff_tlog_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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