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https://github.com/librempeg/librempeg
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0aaf30e805
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> Signed-off-by: Paul B Mahol <onemda@gmail.com>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* a64 muxer
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* Copyright (c) 2009 Tobias Bindhammer
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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 "libavutil/intreadwrite.h"
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#include "libavcodec/codec_id.h"
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#include "libavcodec/codec_par.h"
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#include "avformat.h"
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#include "mux.h"
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#include "rawenc.h"
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static int a64_write_header(AVFormatContext *s)
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{
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AVCodecParameters *par = s->streams[0]->codecpar;
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uint8_t header[5] = {
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0x00, //load
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0x40, //address
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0x00, //mode
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0x00, //charset_lifetime (multi only)
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0x00 //fps in 50/fps;
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};
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if (par->extradata_size < 4) {
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av_log(s, AV_LOG_ERROR, "Missing extradata\n");
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return AVERROR_INVALIDDATA;
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}
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switch (par->codec_id) {
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case AV_CODEC_ID_A64_MULTI:
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header[2] = 0x00;
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header[3] = AV_RB32(par->extradata+0);
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header[4] = 2;
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break;
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case AV_CODEC_ID_A64_MULTI5:
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header[2] = 0x01;
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header[3] = AV_RB32(par->extradata+0);
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header[4] = 3;
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break;
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default:
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return AVERROR_INVALIDDATA;
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}
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avio_write(s->pb, header, 2);
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return 0;
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}
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const FFOutputFormat ff_a64_muxer = {
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.p.name = "a64",
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.p.long_name = NULL_IF_CONFIG_SMALL("a64 - video for Commodore 64"),
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.p.extensions = "a64, A64",
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.p.video_codec = AV_CODEC_ID_A64_MULTI,
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.p.audio_codec = AV_CODEC_ID_NONE,
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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 = a64_write_header,
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.write_packet = ff_raw_write_packet,
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};
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