80 lines
5.9 KiB
C
80 lines
5.9 KiB
C
/*
|
|
* Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* 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/avutil.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixfmt.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 options[] = {
|
|
{ "sws_flags", "scaler flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .dbl = DEFAULT }, 0, UINT_MAX, VE, "sws_flags" },
|
|
{ "fast_bilinear", "fast bilinear", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_FAST_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_BILINEAR }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "bicubic", "bicubic", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_BICUBIC }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "experimental", "experimental", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_X }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "neighbor", "nearest neighbor", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_POINT }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "area", "averaging area", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_AREA }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "bicublin", "luma bicubic, chroma bilinear", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_BICUBLIN }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "gauss", "gaussian", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_GAUSS }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "sinc", "sinc", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_SINC }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "lanczos", "lanczos", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_LANCZOS }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "spline", "natural bicubic spline", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_SPLINE }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "print_info", "print info", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_PRINT_INFO }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "accurate_rnd", "accurate rounding", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_ACCURATE_RND }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "full_chroma_int", "full chroma interpolation", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_FULL_CHR_H_INT }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "full_chroma_inp", "full chroma input", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_FULL_CHR_H_INP }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
{ "bitexact", "", 0, AV_OPT_TYPE_CONST, { .dbl = SWS_BITEXACT }, INT_MIN, INT_MAX, VE, "sws_flags" },
|
|
|
|
{ "srcw", "source width", OFFSET(srcW), AV_OPT_TYPE_INT, { .dbl = 16 }, 1, INT_MAX, VE },
|
|
{ "srch", "source height", OFFSET(srcH), AV_OPT_TYPE_INT, { .dbl = 16 }, 1, INT_MAX, VE },
|
|
{ "dstw", "destination width", OFFSET(dstW), AV_OPT_TYPE_INT, { .dbl = 16 }, 1, INT_MAX, VE },
|
|
{ "dsth", "destination height", OFFSET(dstH), AV_OPT_TYPE_INT, { .dbl = 16 }, 1, INT_MAX, VE },
|
|
{ "src_format", "source format", OFFSET(srcFormat), AV_OPT_TYPE_INT, { .dbl = DEFAULT }, 0, PIX_FMT_NB - 1, VE },
|
|
{ "dst_format", "destination format", OFFSET(dstFormat), AV_OPT_TYPE_INT, { .dbl = DEFAULT }, 0, PIX_FMT_NB - 1, VE },
|
|
{ "src_range", "source range", OFFSET(srcRange), AV_OPT_TYPE_INT, { .dbl = DEFAULT }, 0, 1, VE },
|
|
{ "dst_range", "destination range", OFFSET(dstRange), AV_OPT_TYPE_INT, { .dbl = DEFAULT }, 0, 1, VE },
|
|
{ "param0", "scaler param 0", OFFSET(param[0]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
|
|
{ "param1", "scaler param 1", OFFSET(param[1]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
|
|
|
|
{ NULL }
|
|
};
|
|
|
|
const AVClass sws_context_class = {
|
|
.class_name = "SWScaler",
|
|
.item_name = sws_context_to_name,
|
|
.option = options,
|
|
.category = AV_CLASS_CATEGORY_SWSCALER,
|
|
};
|
|
|
|
const AVClass *sws_get_class(void)
|
|
{
|
|
return &sws_context_class;
|
|
}
|