repositories / deb_ffmpeg.git / blame
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|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg 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. | |
| 10 | * | |
| 11 | * FFmpeg 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. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #include "libavutil/avutil.h" | |
| 22 | #include "libavutil/opt.h" | |
| 23 | #include "libavutil/pixfmt.h" | |
| 24 | #include "swscale.h" | |
| 25 | #include "swscale_internal.h" | |
| 26 | ||
| 27 | static const char *sws_context_to_name(void *ptr) | |
| 28 | { | |
| 29 | return "swscaler"; | |
| 30 | } | |
| 31 | ||
| 32 | #define OFFSET(x) offsetof(SwsContext, x) | |
| 33 | #define DEFAULT 0 | |
| 34 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | |
| 35 | ||
| 36 | static const AVOption swscale_options[] = { | |
| 37 | { "sws_flags", "scaler flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = SWS_BICUBIC }, 0, UINT_MAX, VE, "sws_flags" }, | |
| 38 | { "fast_bilinear", "fast bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FAST_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 39 | { "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 40 | { "bicubic", "bicubic", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBIC }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 41 | { "experimental", "experimental", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_X }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 42 | { "neighbor", "nearest neighbor", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_POINT }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 43 | { "area", "averaging area", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_AREA }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 44 | { "bicublin", "luma bicubic, chroma bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBLIN }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 45 | { "gauss", "gaussian", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_GAUSS }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 46 | { "sinc", "sinc", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SINC }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 47 | { "lanczos", "lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_LANCZOS }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 48 | { "spline", "natural bicubic spline", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SPLINE }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 49 | { "print_info", "print info", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_PRINT_INFO }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 50 | { "accurate_rnd", "accurate rounding", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ACCURATE_RND }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 51 | { "full_chroma_int", "full chroma interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INT }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 52 | { "full_chroma_inp", "full chroma input", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INP }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 53 | { "bitexact", "", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BITEXACT }, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 54 | { "error_diffusion", "error diffusion dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ERROR_DIFFUSION}, INT_MIN, INT_MAX, VE, "sws_flags" }, | |
| 55 | ||
| 56 | { "srcw", "source width", OFFSET(srcW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, | |
| 57 | { "srch", "source height", OFFSET(srcH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, | |
| 58 | { "dstw", "destination width", OFFSET(dstW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, | |
| 59 | { "dsth", "destination height", OFFSET(dstH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE }, | |
| 60 | { "src_format", "source format", OFFSET(srcFormat), AV_OPT_TYPE_INT, { .i64 = DEFAULT }, 0, AV_PIX_FMT_NB - 1, VE }, | |
| 61 | { "dst_format", "destination format", OFFSET(dstFormat), AV_OPT_TYPE_INT, { .i64 = DEFAULT }, 0, AV_PIX_FMT_NB - 1, VE }, | |
| 62 | { "src_range", "source range", OFFSET(srcRange), AV_OPT_TYPE_INT, { .i64 = DEFAULT }, 0, 1, VE }, | |
| 63 | { "dst_range", "destination range", OFFSET(dstRange), AV_OPT_TYPE_INT, { .i64 = DEFAULT }, 0, 1, VE }, | |
| 64 | { "param0", "scaler param 0", OFFSET(param[0]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE }, | |
| 65 | { "param1", "scaler param 1", OFFSET(param[1]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE }, | |
| 66 | ||
| 67 | { "src_v_chr_pos", "source vertical chroma position in luma grid/256" , OFFSET(src_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 512, VE }, | |
| 68 | { "src_h_chr_pos", "source horizontal chroma position in luma grid/256", OFFSET(src_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 512, VE }, | |
| 69 | { "dst_v_chr_pos", "destination vertical chroma position in luma grid/256" , OFFSET(dst_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 512, VE }, | |
| 70 | { "dst_h_chr_pos", "destination horizontal chroma position in luma grid/256", OFFSET(dst_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 512, VE }, | |
| 71 | ||
| 72 | { "sws_dither", "set dithering algorithm", OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = SWS_DITHER_AUTO }, 0, NB_SWS_DITHER, VE, "sws_dither" }, | |
| 73 | { "auto", "leave choice to sws", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_AUTO }, INT_MIN, INT_MAX, VE, "sws_dither" }, | |
| 74 | { "bayer", "bayer dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_BAYER }, INT_MIN, INT_MAX, VE, "sws_dither" }, | |
| 75 | { "ed", "error diffusion", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_ED }, INT_MIN, INT_MAX, VE, "sws_dither" }, | |
| 76 | { "a_dither", "arithmetic addition dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_A_DITHER}, INT_MIN, INT_MAX, VE, "sws_dither" }, | |
| 77 | { "x_dither", "arithmetic xor dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_X_DITHER}, INT_MIN, INT_MAX, VE, "sws_dither" }, | |
| 78 | ||
| 79 | { NULL } | |
| 80 | }; | |
| 81 | ||
| 82 | const AVClass sws_context_class = { | |
| 83 | .class_name = "SWScaler", | |
| 84 | .item_name = sws_context_to_name, | |
| 85 | .option = swscale_options, | |
| 86 | .category = AV_CLASS_CATEGORY_SWSCALER, | |
| 87 | .version = LIBAVUTIL_VERSION_INT, | |
| 88 | }; | |
| 89 | ||
| 90 | const AVClass *sws_get_class(void) | |
| 91 | { | |
| 92 | return &sws_context_class; | |
| 93 | } |