mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/*
|
|
* Copyright 2007 Bobby Bingham
|
|
* Copyright Stefano Sabatini <stefasab gmail com>
|
|
* Copyright Vitor Sessak <vitor1001 gmail com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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/avassert.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;
|
|
}
|
|
|
|
#if FF_API_AVFILTERBUFFER
|
|
AVFilterBufferRef *
|
|
avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const int linesize[4], int perms,
|
|
int w, int h, enum AVPixelFormat format)
|
|
{
|
|
AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
|
|
AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef));
|
|
|
|
if (!pic || !picref)
|
|
goto fail;
|
|
|
|
picref->buf = pic;
|
|
picref->buf->free = ff_avfilter_default_free_buffer;
|
|
if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps))))
|
|
goto fail;
|
|
|
|
pic->w = picref->video->w = w;
|
|
pic->h = picref->video->h = h;
|
|
|
|
/* make sure the buffer gets read permission or it's useless for output */
|
|
picref->perms = perms | AV_PERM_READ;
|
|
|
|
pic->refcount = 1;
|
|
picref->type = AVMEDIA_TYPE_VIDEO;
|
|
pic->format = picref->format = format;
|
|
|
|
memcpy(pic->data, data, 4*sizeof(data[0]));
|
|
memcpy(pic->linesize, linesize, 4*sizeof(linesize[0]));
|
|
memcpy(picref->data, pic->data, sizeof(picref->data));
|
|
memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
|
|
|
|
pic-> extended_data = pic->data;
|
|
picref->extended_data = picref->data;
|
|
|
|
picref->pts = AV_NOPTS_VALUE;
|
|
|
|
return picref;
|
|
|
|
fail:
|
|
if (picref && picref->video)
|
|
av_free(picref->video);
|
|
av_free(picref);
|
|
av_free(pic);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
|
|
{
|
|
AVFrame *ret = NULL;
|
|
|
|
av_unused char buf[16];
|
|
FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_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;
|
|
}
|