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2ba45a60 DM |
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 | } |