2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/avutil.h"
22 #include "libavutil/pixfmt.h"
23 #include "libavcodec/opt.h"
25 #include "swscale_internal.h"
27 static const char * sws_context_to_name(void * ptr)
32 #define OFFSET(x) offsetof(SwsContext, x)
34 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
36 static const AVOption options[] = {
37 { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, 0, UINT_MAX, VE, "sws_flags" },
38 { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, SWS_FAST_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
39 { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, SWS_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
40 { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, SWS_BICUBIC, INT_MIN, INT_MAX, VE, "sws_flags" },
41 { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, SWS_X, INT_MIN, INT_MAX, VE, "sws_flags" },
42 { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, SWS_POINT, INT_MIN, INT_MAX, VE, "sws_flags" },
43 { "area", "averaging area", 0, FF_OPT_TYPE_CONST, SWS_AREA, INT_MIN, INT_MAX, VE, "sws_flags" },
44 { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, SWS_BICUBLIN, INT_MIN, INT_MAX, VE, "sws_flags" },
45 { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, SWS_GAUSS, INT_MIN, INT_MAX, VE, "sws_flags" },
46 { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, SWS_SINC, INT_MIN, INT_MAX, VE, "sws_flags" },
47 { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, SWS_LANCZOS, INT_MIN, INT_MAX, VE, "sws_flags" },
48 { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, SWS_SPLINE, INT_MIN, INT_MAX, VE, "sws_flags" },
49 { "print_info", "print info", 0, FF_OPT_TYPE_CONST, SWS_PRINT_INFO, INT_MIN, INT_MAX, VE, "sws_flags" },
50 { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, SWS_ACCURATE_RND, INT_MIN, INT_MAX, VE, "sws_flags" },
51 { "mmx", "MMX SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX, INT_MIN, INT_MAX, VE, "sws_flags" },
52 { "mmx2", "MMX2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX2, INT_MIN, INT_MAX, VE, "sws_flags" },
53 { "sse2", "SSE2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_SSE2, INT_MIN, INT_MAX, VE, "sws_flags" },
54 { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },
55 { "altivec", "AltiVec SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_ALTIVEC, INT_MIN, INT_MAX, VE, "sws_flags" },
56 { "bfin", "Blackfin SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_BFIN, INT_MIN, INT_MAX, VE, "sws_flags" },
57 { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INT, INT_MIN, INT_MAX, VE, "sws_flags" },
58 { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },
59 { "bitexact", "", 0 , FF_OPT_TYPE_CONST, SWS_BITEXACT, INT_MIN, INT_MAX, VE, "sws_flags" },
61 { "srcw", "source width" , OFFSET(srcW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
62 { "srch", "source height" , OFFSET(srcH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
63 { "dstw", "destination width" , OFFSET(dstW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
64 { "dsth", "destination height", OFFSET(dstH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
65 { "src_format", "source format" , OFFSET(srcFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
66 { "dst_format", "destination format", OFFSET(dstFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
67 { "src_range" , "source range" , OFFSET(srcRange) , FF_OPT_TYPE_INT, DEFAULT, 0, 1, VE },
68 { "dst_range" , "destination range" , OFFSET(dstRange) , FF_OPT_TYPE_INT, DEFAULT, 0, 1, VE },
69 { "param0" , "scaler param 0" , OFFSET(param[0]) , FF_OPT_TYPE_DOUBLE, SWS_PARAM_DEFAULT, INT_MIN, INT_MAX, VE },
70 { "param1" , "scaler param 1" , OFFSET(param[1]) , FF_OPT_TYPE_DOUBLE, SWS_PARAM_DEFAULT, INT_MIN, INT_MAX, VE },
75 const AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };