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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>
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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* SoX native format muxer
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* Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu>
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*
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* Based on libSoX sox-fmt.c
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* Copyright (c) 2008 robs@users.sourceforge.net
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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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* SoX native format muxer
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* @author Daniel Verkamp
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* @see http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format
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*/
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#include "libavutil/intreadwrite.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/dict.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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#include "sox.h"
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typedef struct SoXContext {
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int64_t header_size;
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} SoXContext;
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static int sox_write_header(AVFormatContext *s)
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{
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SoXContext *sox = s->priv_data;
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AVIOContext *pb = s->pb;
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AVCodecParameters *par = s->streams[0]->codecpar;
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AVDictionaryEntry *comment;
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size_t comment_len = 0, comment_size;
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comment = av_dict_get(s->metadata, "comment", NULL, 0);
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if (comment)
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comment_len = strlen(comment->value);
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comment_size = FFALIGN(comment_len, 8);
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sox->header_size = SOX_FIXED_HDR + comment_size;
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if (par->codec_id == AV_CODEC_ID_PCM_S32LE) {
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ffio_wfourcc(pb, ".SoX");
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avio_wl32(pb, sox->header_size);
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avio_wl64(pb, 0); /* number of samples */
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avio_wl64(pb, av_double2int(par->sample_rate));
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avio_wl32(pb, par->ch_layout.nb_channels);
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avio_wl32(pb, comment_size);
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} else if (par->codec_id == AV_CODEC_ID_PCM_S32BE) {
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ffio_wfourcc(pb, "XoS.");
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avio_wb32(pb, sox->header_size);
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avio_wb64(pb, 0); /* number of samples */
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avio_wb64(pb, av_double2int(par->sample_rate));
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avio_wb32(pb, par->ch_layout.nb_channels);
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avio_wb32(pb, comment_size);
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} else {
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av_log(s, AV_LOG_ERROR, "invalid codec; use pcm_s32le or pcm_s32be\n");
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return AVERROR(EINVAL);
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}
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if (comment_len)
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avio_write(pb, comment->value, comment_len);
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ffio_fill(pb, 0, comment_size - comment_len);
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return 0;
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}
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static int sox_write_trailer(AVFormatContext *s)
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{
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SoXContext *sox = s->priv_data;
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AVIOContext *pb = s->pb;
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AVCodecParameters *par = s->streams[0]->codecpar;
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if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
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/* update number of samples */
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int64_t file_size = avio_tell(pb);
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int64_t num_samples = (file_size - sox->header_size - 4LL) >> 2LL;
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avio_seek(pb, 8, SEEK_SET);
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if (par->codec_id == AV_CODEC_ID_PCM_S32LE) {
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avio_wl64(pb, num_samples);
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} else
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avio_wb64(pb, num_samples);
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avio_seek(pb, file_size, SEEK_SET);
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}
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return 0;
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}
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const FFOutputFormat ff_sox_muxer = {
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.p.name = "sox",
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.p.long_name = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"),
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.p.extensions = "sox",
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.priv_data_size = sizeof(SoXContext),
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.p.audio_codec = AV_CODEC_ID_PCM_S32LE,
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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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.write_header = sox_write_header,
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.write_packet = ff_raw_write_packet,
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.write_trailer = sox_write_trailer,
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.p.flags = AVFMT_NOTIMESTAMPS,
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.flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH,
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};
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