Libav 0.7.1
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00001 /* 00002 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at> 00003 * 00004 * This file is part of Libav. 00005 * 00006 * Libav is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * Libav is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with Libav; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include "libavutil/avutil.h" 00022 #include "libavutil/pixfmt.h" 00023 #include "libavutil/opt.h" 00024 #include "swscale.h" 00025 #include "swscale_internal.h" 00026 00027 static const char * sws_context_to_name(void * ptr) 00028 { 00029 return "swscaler"; 00030 } 00031 00032 #define OFFSET(x) offsetof(SwsContext, x) 00033 #define DEFAULT 0 00034 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 00035 00036 static const AVOption options[] = { 00037 { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, 0, UINT_MAX, VE, "sws_flags" }, 00038 { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_FAST_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00039 { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00040 { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_BICUBIC }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00041 { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_X }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00042 { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_POINT }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00043 { "area", "averaging area", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_AREA }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00044 { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_BICUBLIN }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00045 { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_GAUSS }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00046 { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_SINC }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00047 { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_LANCZOS }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00048 { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_SPLINE }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00049 { "print_info", "print info", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_PRINT_INFO }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00050 { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, {.dbl = SWS_ACCURATE_RND }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00051 { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, {.dbl = SWS_FULL_CHR_H_INT }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00052 { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, {.dbl = SWS_FULL_CHR_H_INP }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00053 { "bitexact", "", 0 , FF_OPT_TYPE_CONST, {.dbl = SWS_BITEXACT }, INT_MIN, INT_MAX, VE, "sws_flags" }, 00054 00055 { "srcw", "source width" , OFFSET(srcW), FF_OPT_TYPE_INT, {.dbl = 16 }, 1, INT_MAX, VE }, 00056 { "srch", "source height" , OFFSET(srcH), FF_OPT_TYPE_INT, {.dbl = 16 }, 1, INT_MAX, VE }, 00057 { "dstw", "destination width" , OFFSET(dstW), FF_OPT_TYPE_INT, {.dbl = 16 }, 1, INT_MAX, VE }, 00058 { "dsth", "destination height", OFFSET(dstH), FF_OPT_TYPE_INT, {.dbl = 16 }, 1, INT_MAX, VE }, 00059 { "src_format", "source format" , OFFSET(srcFormat), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, PIX_FMT_NB-1, VE }, 00060 { "dst_format", "destination format", OFFSET(dstFormat), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, PIX_FMT_NB-1, VE }, 00061 { "src_range" , "source range" , OFFSET(srcRange) , FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, 1, VE }, 00062 { "dst_range" , "destination range" , OFFSET(dstRange) , FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, 1, VE }, 00063 { "param0" , "scaler param 0" , OFFSET(param[0]) , FF_OPT_TYPE_DOUBLE, {.dbl = SWS_PARAM_DEFAULT}, INT_MIN, INT_MAX, VE }, 00064 { "param1" , "scaler param 1" , OFFSET(param[1]) , FF_OPT_TYPE_DOUBLE, {.dbl = SWS_PARAM_DEFAULT}, INT_MIN, INT_MAX, VE }, 00065 00066 { NULL } 00067 }; 00068 00069 const AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };