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https://github.com/FFmpeg/FFmpeg.git
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03b04eef72
Several muxers (e.g. pcm muxers) did not check the number of streams even though the individual streams were not recoverable from the muxed files. This commit changes this by using the FF_OFMT_MAX_ONE_OF_EACH flag where appropriate. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* Adobe Filmstrip muxer
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* Copyright (c) 2010 Peter Ross
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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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* Adobe Filmstrip muxer
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*/
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "mux.h"
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#include "rawenc.h"
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#define RAND_TAG MKBETAG('R','a','n','d')
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static int write_header(AVFormatContext *s)
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{
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if (s->streams[0]->codecpar->format != AV_PIX_FMT_RGBA) {
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av_log(s, AV_LOG_ERROR, "only AV_PIX_FMT_RGBA is supported\n");
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return AVERROR_INVALIDDATA;
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}
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return 0;
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}
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static int write_trailer(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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AVStream *st = s->streams[0];
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avio_wb32(pb, RAND_TAG);
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avio_wb32(pb, st->nb_frames);
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avio_wb16(pb, 0); // packing method
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avio_wb16(pb, 0); // reserved
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avio_wb16(pb, st->codecpar->width);
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avio_wb16(pb, st->codecpar->height);
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avio_wb16(pb, 0); // leading
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// TODO: should be avg_frame_rate
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avio_wb16(pb, st->time_base.den / st->time_base.num);
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ffio_fill(pb, 0x00, 16); // reserved
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return 0;
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}
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const FFOutputFormat ff_filmstrip_muxer = {
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.p.name = "filmstrip",
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.p.long_name = NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
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.p.extensions = "flm",
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.p.audio_codec = AV_CODEC_ID_NONE,
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.p.video_codec = AV_CODEC_ID_RAWVIDEO,
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.p.subtitle_codec = AV_CODEC_ID_NONE,
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.flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
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.write_header = write_header,
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.write_packet = ff_raw_write_packet,
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.write_trailer = write_trailer,
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};
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