2 * This file is part of FFmpeg.
4 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/imgutils.h"
20 #include "lswsutils.h"
22 int ff_scale_image(uint8_t *dst_data
[4], int dst_linesize
[4],
23 int dst_w
, int dst_h
, enum AVPixelFormat dst_pix_fmt
,
24 uint8_t * const src_data
[4], int src_linesize
[4],
25 int src_w
, int src_h
, enum AVPixelFormat src_pix_fmt
,
29 struct SwsContext
*sws_ctx
= sws_getContext(src_w
, src_h
, src_pix_fmt
,
30 dst_w
, dst_h
, dst_pix_fmt
,
33 av_log(log_ctx
, AV_LOG_ERROR
,
34 "Impossible to create scale context for the conversion "
35 "fmt:%s s:%dx%d -> fmt:%s s:%dx%d\n",
36 av_get_pix_fmt_name(src_pix_fmt
), src_w
, src_h
,
37 av_get_pix_fmt_name(dst_pix_fmt
), dst_w
, dst_h
);
38 ret
= AVERROR(EINVAL
);
42 if ((ret
= av_image_alloc(dst_data
, dst_linesize
, dst_w
, dst_h
, dst_pix_fmt
, 16)) < 0)
45 sws_scale(sws_ctx
, (const uint8_t * const*)src_data
, src_linesize
, 0, src_h
, dst_data
, dst_linesize
);
48 sws_freeContext(sws_ctx
);