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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*
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* SAUCE header parser
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* Copyright (c) 2010 Peter Ross <pross@xvid.org>
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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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/**
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* @file
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* SAUCE header parser
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*/
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#include "libavutil/dict.h"
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#include "libavutil/mem.h"
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#include "avformat.h"
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#include "sauce.h"
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int ff_sauce_read(AVFormatContext *avctx, uint64_t *fsize, int *got_width, int get_height)
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{
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AVIOContext *pb = avctx->pb;
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char buf[36];
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int datatype, filetype, t1, t2, nb_comments;
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uint64_t start_pos = avio_size(pb) - 128;
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avio_seek(pb, start_pos, SEEK_SET);
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if (avio_read(pb, buf, 7) != 7)
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return -1;
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if (memcmp(buf, "SAUCE00", 7))
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return -1;
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#define GET_SAUCE_META(name,size) \
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if (avio_read(pb, buf, size) == size && buf[0]) { \
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buf[size] = 0; \
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av_dict_set(&avctx->metadata, name, buf, 0); \
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}
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GET_SAUCE_META("title", 35)
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GET_SAUCE_META("artist", 20)
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GET_SAUCE_META("publisher", 20)
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GET_SAUCE_META("date", 8)
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avio_skip(pb, 4);
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datatype = avio_r8(pb);
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filetype = avio_r8(pb);
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t1 = avio_rl16(pb);
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t2 = avio_rl16(pb);
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nb_comments = avio_r8(pb);
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avio_skip(pb, 1); /* flags */
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avio_skip(pb, 4);
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GET_SAUCE_META("encoder", 22);
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if (got_width && datatype && filetype) {
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if ((datatype == 1 && filetype <=2) || (datatype == 5 && filetype == 255) || datatype == 6) {
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if (t1) {
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avctx->streams[0]->codecpar->width = t1<<3;
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*got_width = 1;
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}
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if (get_height && t2)
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avctx->streams[0]->codecpar->height = t2<<4;
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} else if (datatype == 5) {
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if (filetype) {
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avctx->streams[0]->codecpar->width = (filetype == 1 ? t1 : filetype) << 4;
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*got_width = 1;
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}
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if (get_height && t2)
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avctx->streams[0]->codecpar->height = t2<<4;
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}
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}
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*fsize -= 128;
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if (nb_comments > 0) {
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avio_seek(pb, start_pos - 64*nb_comments - 5, SEEK_SET);
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if (avio_read(pb, buf, 5) == 5 && !memcmp(buf, "COMNT", 5)) {
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int i;
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char *str = av_malloc(65*nb_comments + 1);
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*fsize -= 64*nb_comments + 5;
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if (!str)
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return 0;
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for (i = 0; i < nb_comments; i++) {
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if (avio_read(pb, str + 65*i, 64) != 64)
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break;
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str[65*i + 64] = '\n';
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}
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str[65*i] = 0;
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av_dict_set(&avctx->metadata, "comment", str, AV_DICT_DONT_STRDUP_VAL);
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}
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}
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return 0;
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}
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