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https://git.ffmpeg.org/ffmpeg.git
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5e50a56b9c
Replacing the old sws_isSupported* API with a more consistent family of functions that follows the same signature and naming convention, including a placeholder for testing the color space parameters that we don't currently implement conversions for. These functions also perform some extra basic sanity checking. Sponsored-by: Sovereign Tech Fund Signed-off-by: Niklas Haas <git@haasn.dev>
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*
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* Copyright (C) 2024 Niklas Haas
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SWSCALE_UTILS_H
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#define SWSCALE_UTILS_H
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#include "libavutil/pixdesc.h"
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#include "swscale.h"
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enum {
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FIELD_TOP, /* top/even rows, or progressive */
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FIELD_BOTTOM, /* bottom/odd rows */
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};
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/* Subset of AVFrame parameters that uniquely determine pixel representation */
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typedef struct SwsFormat {
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int width, height;
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int interlaced;
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enum AVPixelFormat format;
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enum AVColorRange range;
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enum AVColorPrimaries prim;
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enum AVColorTransferCharacteristic trc;
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enum AVColorSpace csp;
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enum AVChromaLocation loc;
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const AVPixFmtDescriptor *desc; /* convenience */
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} SwsFormat;
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/**
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* This function also sanitizes and strips the input data, removing irrelevant
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* fields for certain formats.
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*/
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SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field);
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static inline int ff_fmt_equal(const SwsFormat *fmt1, const SwsFormat *fmt2)
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{
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return fmt1->width == fmt2->width &&
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fmt1->height == fmt2->height &&
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fmt1->interlaced == fmt2->interlaced &&
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fmt1->format == fmt2->format &&
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fmt1->range == fmt2->range &&
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fmt1->prim == fmt2->prim &&
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fmt1->trc == fmt2->trc &&
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fmt1->csp == fmt2->csp &&
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fmt1->loc == fmt2->loc;
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}
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static inline int ff_fmt_align(enum AVPixelFormat fmt)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
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if (desc->flags & AV_PIX_FMT_FLAG_BAYER) {
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return 2;
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} else {
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return 1 << desc->log2_chroma_h;
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}
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}
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int ff_test_fmt(const SwsFormat *fmt, int output);
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#endif /* SWSCALE_UTILS_H */
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