blob: ebb4f93be005ccaca07de852829b55e6ce0b327d
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
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. |
8 | * |
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. |
13 | * |
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 |
17 | */ |
18 | |
19 | #include "libavutil/imgutils.h" |
20 | #include "lswsutils.h" |
21 | |
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, |
26 | void *log_ctx) |
27 | { |
28 | int ret; |
29 | struct SwsContext *sws_ctx = sws_getContext(src_w, src_h, src_pix_fmt, |
30 | dst_w, dst_h, dst_pix_fmt, |
31 | 0, NULL, NULL, NULL); |
32 | if (!sws_ctx) { |
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); |
39 | goto end; |
40 | } |
41 | |
42 | if ((ret = av_image_alloc(dst_data, dst_linesize, dst_w, dst_h, dst_pix_fmt, 16)) < 0) |
43 | goto end; |
44 | ret = 0; |
45 | sws_scale(sws_ctx, (const uint8_t * const*)src_data, src_linesize, 0, src_h, dst_data, dst_linesize); |
46 | |
47 | end: |
48 | sws_freeContext(sws_ctx); |
49 | return ret; |
50 | } |
51 |