/* * WebP encoding support via libwebp * Copyright (c) 2013 Justin Ruggles <justin.ruggles@gmail.com> * * 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 */ /** * @file * WebP encoder using libwebp: common structs and methods. */ #ifndef AVCODEC_LIBWEBPENC_COMMON_H #define AVCODEC_LIBWEBPENC_COMMON_H #include <webp/encode.h> #include "libavutil/common.h" #include "libavutil/frame.h" #include "libavutil/imgutils.h" #include "libavutil/opt.h" #include "avcodec.h" #include "internal.h" typedef struct LibWebPContextCommon { AVClass *class; // class for AVOptions float quality; // lossy quality 0 - 100 int lossless; // use lossless encoding int preset; // configuration preset int chroma_warning; // chroma linesize mismatch warning has been printed int conversion_warning; // pixel format conversion warning has been printed WebPConfig config; // libwebp configuration AVFrame *ref; int cr_size; int cr_threshold; } LibWebPContextCommon; int ff_libwebp_error_to_averror(int err); av_cold int ff_libwebp_encode_init_common(AVCodecContext *avctx); int ff_libwebp_get_frame(AVCodecContext *avctx, LibWebPContextCommon *s, const AVFrame *frame, AVFrame **alt_frame_ptr, WebPPicture **pic_ptr); #define OFFSET(x) offsetof(LibWebPContextCommon, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "lossless", "Use lossless mode", OFFSET(lossless), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "preset", "Configuration preset", OFFSET(preset), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, WEBP_PRESET_TEXT, VE, "preset" }, { "none", "do not use a preset", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, "preset" }, { "default", "default preset", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_DEFAULT }, 0, 0, VE, "preset" }, { "picture", "digital picture, like portrait, inner shot", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_PICTURE }, 0, 0, VE, "preset" }, { "photo", "outdoor photograph, with natural lighting", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_PHOTO }, 0, 0, VE, "preset" }, { "drawing", "hand or line drawing, with high-contrast details", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_DRAWING }, 0, 0, VE, "preset" }, { "icon", "small-sized colorful images", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_ICON }, 0, 0, VE, "preset" }, { "text", "text-like", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_TEXT }, 0, 0, VE, "preset" }, { "cr_threshold","Conditional replenishment threshold", OFFSET(cr_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE }, { "cr_size" ,"Conditional replenishment block size", OFFSET(cr_size) , AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 256, VE }, { "quality" ,"Quality", OFFSET(quality), AV_OPT_TYPE_FLOAT, { .dbl = 75 }, 0, 100, VE }, { NULL }, }; static const AVCodecDefault libwebp_defaults[] = { { "compression_level", "4" }, { "global_quality", "-1" }, { NULL }, }; #endif /* AVCODEC_LIBWEBPENC_COMMON_H */