1 /*
2  * WebP encoding support via libwebp
3  * Copyright (c) 2013 Justin Ruggles <justin.ruggles@gmail.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * WebP encoder using libwebp: common structs and methods.
25  */
26 
27 #ifndef AVCODEC_LIBWEBPENC_COMMON_H
28 #define AVCODEC_LIBWEBPENC_COMMON_H
29 
30 #include <webp/encode.h>
31 
32 #include "libavutil/attributes.h"
33 #include "libavutil/frame.h"
34 #include "libavutil/log.h"
35 #include "libavutil/pixfmt.h"
36 #include "avcodec.h"
37 #include "codec_internal.h"
38 
39 typedef struct LibWebPContextCommon {
40     AVClass *class;         // class for AVOptions
41     float quality;          // lossy quality 0 - 100
42     int lossless;           // use lossless encoding
43     int preset;             // configuration preset
44     int chroma_warning;     // chroma linesize mismatch warning has been printed
45     int conversion_warning; // pixel format conversion warning has been printed
46     WebPConfig config;      // libwebp configuration
47     AVFrame *ref;
48     int cr_size;
49     int cr_threshold;
50 } LibWebPContextCommon;
51 
52 int ff_libwebp_error_to_averror(int err);
53 
54 av_cold int ff_libwebp_encode_init_common(AVCodecContext *avctx);
55 
56 int ff_libwebp_get_frame(AVCodecContext *avctx, LibWebPContextCommon *s,
57                          const AVFrame *frame, AVFrame **alt_frame_ptr,
58                          WebPPicture **pic_ptr);
59 
60 extern const enum AVPixelFormat ff_libwebpenc_pix_fmts[];
61 extern const AVClass ff_libwebpenc_class;
62 extern const FFCodecDefault ff_libwebp_defaults[];
63 
64 #endif /* AVCODEC_LIBWEBPENC_COMMON_H */
65