mirror of
https://github.com/FFmpeg/FFmpeg.git
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497a0f839d
The strings here are so short that using a pointer is wasteful (the longest string takes nine bytes; on 64 bit systems, the pointer+padding already take 12 bytes). So avoid them and add asserts to ensure that no one ever tries to use a too long tag. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* Image format
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2004 Michael Niedermayer
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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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#include <assert.h>
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#include "libavutil/avstring.h"
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#include "internal.h"
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#include "img2.h"
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#define IMG_TAGS(TAG) \
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TAG(MJPEG, jpeg ) \
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TAG(MJPEG, jpg ) \
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TAG(MJPEG, jps ) \
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TAG(MJPEG, mpo ) \
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TAG(LJPEG, ljpg ) \
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TAG(JPEGLS, jls ) \
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TAG(PNG, png ) \
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TAG(PNG, pns ) \
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TAG(PNG, mng ) \
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TAG(PPM, ppm ) \
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TAG(PPM, pnm ) \
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TAG(PGM, pgm ) \
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TAG(PGMYUV, pgmyuv ) \
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TAG(PBM, pbm ) \
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TAG(PAM, pam ) \
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TAG(PFM, pfm ) \
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TAG(PHM, phm ) \
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TAG(CRI, cri ) \
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TAG(ALIAS_PIX, pix ) \
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TAG(DDS, dds ) \
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TAG(MPEG1VIDEO, mpg1-img ) \
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TAG(MPEG2VIDEO, mpg2-img ) \
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TAG(MPEG4, mpg4-img ) \
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TAG(RAWVIDEO, y ) \
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TAG(RAWVIDEO, raw ) \
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TAG(BMP, bmp ) \
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TAG(TARGA, tga ) \
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TAG(TIFF, tiff ) \
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TAG(TIFF, tif ) \
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TAG(TIFF, dng ) \
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TAG(SGI, sgi ) \
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TAG(PTX, ptx ) \
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TAG(PHOTOCD, pcd ) \
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TAG(PCX, pcx ) \
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TAG(QDRAW, pic ) \
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TAG(QDRAW, pct ) \
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TAG(QDRAW, pict ) \
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TAG(SUNRAST, sun ) \
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TAG(SUNRAST, ras ) \
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TAG(SUNRAST, rs ) \
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TAG(SUNRAST, im1 ) \
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TAG(SUNRAST, im8 ) \
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TAG(SUNRAST, im24 ) \
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TAG(SUNRAST, im32 ) \
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TAG(SUNRAST, sunras ) \
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TAG(SVG, svg ) \
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TAG(SVG, svgz ) \
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TAG(JPEG2000, j2c ) \
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TAG(JPEG2000, jp2 ) \
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TAG(JPEG2000, jpc ) \
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TAG(JPEG2000, j2k ) \
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TAG(DPX, dpx ) \
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TAG(EXR, exr ) \
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TAG(PICTOR, pic ) \
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TAG(V210X, yuv10 ) \
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TAG(WEBP, webp ) \
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TAG(XBM, xbm ) \
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TAG(XPM, xpm ) \
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TAG(XFACE, xface ) \
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TAG(XWD, xwd ) \
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TAG(GEM, img ) \
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TAG(GEM, ximg ) \
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TAG(GEM, timg ) \
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TAG(VBN, vbn ) \
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TAG(JPEGXL, jxl ) \
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TAG(QOI, qoi ) \
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TAG(RADIANCE_HDR, hdr ) \
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TAG(WBMP, wbmp ) \
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TAG(NONE, )
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#define LENGTH_CHECK(CODECID, STR) \
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static_assert(sizeof(#STR) <= sizeof(ff_img_tags->str), #STR " does not fit into IdStrMap.str\n");
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IMG_TAGS(LENGTH_CHECK)
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const IdStrMap ff_img_tags[] = {
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#define TAG(CODECID, STR) { AV_CODEC_ID_ ## CODECID, #STR },
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IMG_TAGS(TAG)
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};
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static enum AVCodecID str2id(const IdStrMap *tags, const char *str)
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{
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str = strrchr(str, '.');
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if (!str)
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return AV_CODEC_ID_NONE;
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str++;
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while (tags->id) {
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if (!av_strcasecmp(str, tags->str))
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return tags->id;
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tags++;
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}
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return AV_CODEC_ID_NONE;
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}
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enum AVCodecID ff_guess_image2_codec(const char *filename)
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{
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return str2id(ff_img_tags, filename);
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}
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