mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-22 23:33:07 +00:00
51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
|
/*
|
||
|
|
* 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 "libavutil/imgutils.h"
|
||
|
|
#include "lswsutils.h"
|
||
|
|
|
||
|
|
int ff_scale_image(uint8_t *dst_data[4], int dst_linesize[4],
|
||
|
|
int dst_w, int dst_h, enum PixelFormat dst_pix_fmt,
|
||
|
|
uint8_t * const src_data[4], int src_linesize[4],
|
||
|
|
int src_w, int src_h, enum PixelFormat src_pix_fmt,
|
||
|
|
void *log_ctx)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
struct SwsContext *sws_ctx = sws_getContext(src_w, src_h, src_pix_fmt,
|
||
|
|
dst_w, dst_h, dst_pix_fmt,
|
||
|
|
SWS_BILINEAR, NULL, NULL, NULL);
|
||
|
|
if (!sws_ctx) {
|
||
|
|
av_log(log_ctx, AV_LOG_ERROR,
|
||
|
|
"Impossible to create scale context for the conversion "
|
||
|
|
"fmt:%s s:%dx%d -> fmt:%s s:%dx%d\n",
|
||
|
|
av_get_pix_fmt_name(src_pix_fmt), src_w, src_h,
|
||
|
|
av_get_pix_fmt_name(dst_pix_fmt), dst_w, dst_h);
|
||
|
|
ret = AVERROR(EINVAL);
|
||
|
|
goto end;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((ret = av_image_alloc(dst_data, dst_linesize, dst_w, dst_h, dst_pix_fmt, 16)) < 0)
|
||
|
|
goto end;
|
||
|
|
ret = 0;
|
||
|
|
sws_scale(sws_ctx, src_data, src_linesize, 0, src_h, dst_data, dst_linesize);
|
||
|
|
|
||
|
|
end:
|
||
|
|
sws_freeContext(sws_ctx);
|
||
|
|
return ret;
|
||
|
|
}
|