/* * Copyright (C) 2001-2003 Michael Niedermayer * * 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 */ #include "libavutil/opt.h" #include "swscale.h" #include "swscale_internal.h" static const char *sws_context_to_name(void *ptr) { return "swscaler"; } #define OFFSET(x) offsetof(SwsContext, x) #define DEFAULT 0 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption swscale_options[] = { { "sws_flags", "swscale flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = SWS_BICUBIC }, .flags = VE, .unit = "sws_flags", .max = UINT_MAX }, { "fast_bilinear", "fast bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FAST_BILINEAR }, .flags = VE, .unit = "sws_flags" }, { "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BILINEAR }, .flags = VE, .unit = "sws_flags" }, { "bicubic", "bicubic", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBIC }, .flags = VE, .unit = "sws_flags" }, { "experimental", "experimental", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_X }, .flags = VE, .unit = "sws_flags" }, { "neighbor", "nearest neighbor", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_POINT }, .flags = VE, .unit = "sws_flags" }, { "area", "averaging area", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_AREA }, .flags = VE, .unit = "sws_flags" }, { "bicublin", "luma bicubic, chroma bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBLIN }, .flags = VE, .unit = "sws_flags" }, { "gauss", "gaussian approximation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_GAUSS }, .flags = VE, .unit = "sws_flags" }, { "sinc", "sinc", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SINC }, .flags = VE, .unit = "sws_flags" }, { "lanczos", "lanczos (sinc/sinc)", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_LANCZOS }, .flags = VE, .unit = "sws_flags" }, { "spline", "natural bicubic spline", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SPLINE }, .flags = VE, .unit = "sws_flags" }, { "print_info", "print info", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_PRINT_INFO }, .flags = VE, .unit = "sws_flags" }, { "accurate_rnd", "accurate rounding", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ACCURATE_RND }, .flags = VE, .unit = "sws_flags" }, { "full_chroma_int", "full chroma interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INT }, .flags = VE, .unit = "sws_flags" }, { "full_chroma_inp", "full chroma input", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INP }, .flags = VE, .unit = "sws_flags" }, { "bitexact", "bit-exact mode", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BITEXACT }, .flags = VE, .unit = "sws_flags" }, { "error_diffusion", "error diffusion dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ERROR_DIFFUSION}, .flags = VE, .unit = "sws_flags" }, { "param0", "scaler param 0", OFFSET(scaler_params[0]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE }, { "param1", "scaler param 1", OFFSET(scaler_params[1]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE }, { "srcw", "source width", OFFSET(src_w), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, { "srch", "source height", OFFSET(src_h), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, { "dstw", "destination width", OFFSET(dst_w), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, { "dsth", "destination height", OFFSET(dst_h), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, { "src_format", "source format", OFFSET(src_format), AV_OPT_TYPE_PIXEL_FMT, { .i64 = DEFAULT }, 0, INT_MAX, VE }, { "dst_format", "destination format", OFFSET(dst_format), AV_OPT_TYPE_PIXEL_FMT, { .i64 = DEFAULT }, 0, INT_MAX, VE }, { "src_range", "source is full range", OFFSET(src_range), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE }, { "dst_range", "destination is full range", OFFSET(dst_range), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE }, { "gamma", "gamma correct scaling", OFFSET(gamma_flag), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE }, { "src_v_chr_pos", "source vertical chroma position in luma grid/256" , OFFSET(src_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE }, { "src_h_chr_pos", "source horizontal chroma position in luma grid/256", OFFSET(src_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE }, { "dst_v_chr_pos", "destination vertical chroma position in luma grid/256" , OFFSET(dst_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE }, { "dst_h_chr_pos", "destination horizontal chroma position in luma grid/256", OFFSET(dst_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE }, { "sws_dither", "set dithering algorithm", OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither", .max = SWS_DITHER_NB - 1 }, { "auto", "automatic selection", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither" }, { "bayer", "ordered matrix dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_BAYER }, .flags = VE, .unit = "sws_dither" }, { "ed", "full error diffusion", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_ED }, .flags = VE, .unit = "sws_dither" }, { "a_dither", "arithmetic addition dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_A_DITHER }, .flags = VE, .unit = "sws_dither" }, { "x_dither", "arithmetic xor dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_X_DITHER }, .flags = VE, .unit = "sws_dither" }, { "alphablend", "mode for alpha -> non alpha", OFFSET(alpha_blend), AV_OPT_TYPE_INT, { .i64 = SWS_ALPHA_BLEND_NONE}, .flags = VE, .unit = "alphablend", .max = SWS_ALPHA_BLEND_NB - 1 }, { "none", "ignore alpha", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_NONE}, .flags = VE, .unit = "alphablend" }, { "uniform_color", "blend onto a uniform color", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_UNIFORM}, .flags = VE, .unit = "alphablend" }, { "checkerboard", "blend onto a checkerboard", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_CHECKERBOARD}, .flags = VE, .unit = "alphablend" }, { "threads", "number of threads", OFFSET(threads), AV_OPT_TYPE_INT, {.i64 = 1 }, .flags = VE, .unit = "threads", .max = INT_MAX }, { "auto", "automatic selection", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, .flags = VE, .unit = "threads" }, { NULL } }; const AVClass ff_sws_context_class = { .class_name = "SWScaler", .item_name = sws_context_to_name, .option = swscale_options, .parent_log_context_offset = offsetof(SwsInternal, parent), .category = AV_CLASS_CATEGORY_SWSCALER, .version = LIBAVUTIL_VERSION_INT, }; const AVClass *sws_get_class(void) { return &ff_sws_context_class; }