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Diffstat (limited to 'libavcodec/libwebpenc_common.h')
| -rw-r--r-- | libavcodec/libwebpenc_common.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/libavcodec/libwebpenc_common.h b/libavcodec/libwebpenc_common.h new file mode 100644 index 0000000000..ea2410ceac --- /dev/null +++ b/libavcodec/libwebpenc_common.h @@ -0,0 +1,89 @@ +/* + * 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. + */ + +#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); + +int ff_libwebp_encode_close_common(AVCodecContext *avctx); + +#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 AVClass class = { + .class_name = "libwebp", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const AVCodecDefault libwebp_defaults[] = { + { "compression_level", "4" }, + { "global_quality", "-1" }, + { NULL }, +}; |