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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>
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*
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* RSO muxer
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* Copyright (c) 2001 Fabrice Bellard (original AU code)
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* Copyright (c) 2010 Rafael Carre
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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 "avformat.h"
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#include "internal.h"
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#include "mux.h"
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#include "rawenc.h"
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#include "riff.h"
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#include "rso.h"
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static int rso_write_header(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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AVCodecParameters *par = s->streams[0]->codecpar;
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if (!par->codec_tag)
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return AVERROR_INVALIDDATA;
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if (par->ch_layout.nb_channels != 1) {
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av_log(s, AV_LOG_ERROR, "RSO only supports mono\n");
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return AVERROR_INVALIDDATA;
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}
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if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
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av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
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return AVERROR_INVALIDDATA;
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}
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/* XXX: find legal sample rates (if any) */
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if (par->sample_rate >= 1u<<16) {
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av_log(s, AV_LOG_ERROR, "Sample rate must be < 65536\n");
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return AVERROR_INVALIDDATA;
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}
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if (par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
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avpriv_report_missing_feature(s, "ADPCM in RSO");
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return AVERROR_PATCHWELCOME;
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}
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/* format header */
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avio_wb16(pb, par->codec_tag); /* codec ID */
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avio_wb16(pb, 0); /* data size, will be written at EOF */
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avio_wb16(pb, par->sample_rate);
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avio_wb16(pb, 0x0000); /* play mode ? (0x0000 = don't loop) */
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return 0;
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}
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static int rso_write_trailer(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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int64_t file_size;
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uint16_t coded_file_size;
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file_size = avio_tell(pb);
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if (file_size < 0)
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return file_size;
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if (file_size > 0xffff + RSO_HEADER_SIZE) {
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av_log(s, AV_LOG_WARNING,
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"Output file is too big (%"PRId64" bytes >= 64kB)\n", file_size);
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coded_file_size = 0xffff;
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} else {
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coded_file_size = file_size - RSO_HEADER_SIZE;
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}
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/* update file size */
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avio_seek(pb, 2, SEEK_SET);
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avio_wb16(pb, coded_file_size);
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avio_seek(pb, file_size, SEEK_SET);
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return 0;
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}
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const FFOutputFormat ff_rso_muxer = {
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.p.name = "rso",
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.p.long_name = NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO"),
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.p.extensions = "rso",
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.p.audio_codec = AV_CODEC_ID_PCM_U8,
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.p.video_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 = rso_write_header,
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.write_packet = ff_raw_write_packet,
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.write_trailer = rso_write_trailer,
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.p.codec_tag = ff_rso_codec_tags_list,
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.p.flags = AVFMT_NOTIMESTAMPS,
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};
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