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00020
00021 #include "libavutil/avutil.h"
00022 #include "libavutil/pixfmt.h"
00023 #include "libavcodec/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, DEFAULT, 0, UINT_MAX, VE, "sws_flags" },
00038 { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, SWS_FAST_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
00039 { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, SWS_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
00040 { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, SWS_BICUBIC, INT_MIN, INT_MAX, VE, "sws_flags" },
00041 { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, SWS_X, INT_MIN, INT_MAX, VE, "sws_flags" },
00042 { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, SWS_POINT, INT_MIN, INT_MAX, VE, "sws_flags" },
00043 { "area", "averaging area", 0, FF_OPT_TYPE_CONST, SWS_AREA, INT_MIN, INT_MAX, VE, "sws_flags" },
00044 { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, SWS_BICUBLIN, INT_MIN, INT_MAX, VE, "sws_flags" },
00045 { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, SWS_GAUSS, INT_MIN, INT_MAX, VE, "sws_flags" },
00046 { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, SWS_SINC, INT_MIN, INT_MAX, VE, "sws_flags" },
00047 { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, SWS_LANCZOS, INT_MIN, INT_MAX, VE, "sws_flags" },
00048 { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, SWS_SPLINE, INT_MIN, INT_MAX, VE, "sws_flags" },
00049 { "print_info", "print info", 0, FF_OPT_TYPE_CONST, SWS_PRINT_INFO, INT_MIN, INT_MAX, VE, "sws_flags" },
00050 { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, SWS_ACCURATE_RND, INT_MIN, INT_MAX, VE, "sws_flags" },
00051 { "mmx", "MMX SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX, INT_MIN, INT_MAX, VE, "sws_flags" },
00052 { "mmx2", "MMX2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX2, INT_MIN, INT_MAX, VE, "sws_flags" },
00053 { "sse2", "SSE2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_SSE2, INT_MIN, INT_MAX, VE, "sws_flags" },
00054 { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },
00055 { "altivec", "AltiVec SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_ALTIVEC, INT_MIN, INT_MAX, VE, "sws_flags" },
00056 { "bfin", "Blackfin SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_BFIN, INT_MIN, INT_MAX, VE, "sws_flags" },
00057 { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INT, INT_MIN, INT_MAX, VE, "sws_flags" },
00058 { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },
00059 { "bitexact", "", 0 , FF_OPT_TYPE_CONST, SWS_BITEXACT, INT_MIN, INT_MAX, VE, "sws_flags" },
00060
00061 { "srcw", "source width" , OFFSET(srcW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
00062 { "srch", "source height" , OFFSET(srcH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
00063 { "dstw", "destination width" , OFFSET(dstW), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
00064 { "dsth", "destination height", OFFSET(dstH), FF_OPT_TYPE_INT, 16, 1, INT_MAX, VE },
00065 { "src_format", "source format" , OFFSET(srcFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
00066 { "dst_format", "destination format", OFFSET(dstFormat), FF_OPT_TYPE_INT, DEFAULT, 0, PIX_FMT_NB-1, VE },
00067 { "src_range" , "source range" , OFFSET(srcRange) , FF_OPT_TYPE_INT, DEFAULT, 0, 1, VE },
00068 { "dst_range" , "destination range" , OFFSET(dstRange) , FF_OPT_TYPE_INT, DEFAULT, 0, 1, VE },
00069 { "param0" , "scaler param 0" , OFFSET(param[0]) , FF_OPT_TYPE_DOUBLE, SWS_PARAM_DEFAULT, INT_MIN, INT_MAX, VE },
00070 { "param1" , "scaler param 1" , OFFSET(param[1]) , FF_OPT_TYPE_DOUBLE, SWS_PARAM_DEFAULT, INT_MIN, INT_MAX, VE },
00071
00072 { NULL }
00073 };
00074
00075 const AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };