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https://github.com/FFmpeg/FFmpeg.git
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avformat: add musx demuxer
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
8a4c3f5258
commit
56a3a3f01c
@ -19,6 +19,7 @@ version <next>:
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- libdcadec removed
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- bitstream filter for extracting DTS core
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- ADPCM IMA DAT4 decoder
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- musx demuxer
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version 3.0:
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- Common Encryption (CENC) MP4 encoding and decoding support
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@ -296,6 +296,7 @@ OBJS-$(CONFIG_MSF_DEMUXER) += msf.o
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OBJS-$(CONFIG_MPSUB_DEMUXER) += mpsubdec.o subtitles.o
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OBJS-$(CONFIG_MSNWC_TCP_DEMUXER) += msnwc_tcp.o
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OBJS-$(CONFIG_MTV_DEMUXER) += mtv.o
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OBJS-$(CONFIG_MUSX_DEMUXER) += musx.o
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OBJS-$(CONFIG_MV_DEMUXER) += mvdec.o
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OBJS-$(CONFIG_MVI_DEMUXER) += mvi.o
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OBJS-$(CONFIG_MXF_DEMUXER) += mxfdec.o mxf.o
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@ -207,6 +207,7 @@ void av_register_all(void)
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REGISTER_DEMUXER (MSF, msf);
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REGISTER_DEMUXER (MSNWC_TCP, msnwc_tcp);
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REGISTER_DEMUXER (MTV, mtv);
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REGISTER_DEMUXER (MUSX, musx);
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REGISTER_DEMUXER (MV, mv);
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REGISTER_DEMUXER (MVI, mvi);
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REGISTER_MUXDEMUX(MXF, mxf);
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177
libavformat/musx.c
Normal file
177
libavformat/musx.c
Normal file
@ -0,0 +1,177 @@
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/*
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* MUSX demuxer
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* Copyright (c) 2016 Paul B Mahol
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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/avassert.h"
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#include "avformat.h"
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#include "internal.h"
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static int musx_probe(AVProbeData *p)
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{
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if (memcmp(p->buf, "MUSX", 4))
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return 0;
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return AVPROBE_SCORE_MAX / 5 * 2;
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}
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static int musx_read_header(AVFormatContext *s)
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{
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unsigned type, version, coding, offset;
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AVStream *st;
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avio_skip(s->pb, 8);
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version = avio_rl32(s->pb);
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if (version != 10 &&
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version != 6 &&
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version != 5 &&
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version != 4 &&
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version != 201) {
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avpriv_request_sample(s, "Unsupported version: %d", version);
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return AVERROR_PATCHWELCOME;
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}
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avio_skip(s->pb, 4);
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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if (version == 201) {
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avio_skip(s->pb, 8);
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offset = avio_rl32(s->pb);
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
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st->codec->channels = 2;
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st->codec->sample_rate = 32000;
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st->codec->block_align = 0x80 * st->codec->channels;
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} else if (version == 10) {
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type = avio_rl32(s->pb);
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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offset = 0x800;
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switch (type) {
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case MKTAG('P', 'S', '3', '_'):
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st->codec->channels = 2;
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st->codec->sample_rate = 44100;
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avio_skip(s->pb, 44);
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coding = avio_rl32(s->pb);
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if (coding == MKTAG('D', 'A', 'T', '4') ||
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coding == MKTAG('D', 'A', 'T', '8')) {
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avio_skip(s->pb, 4);
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st->codec->channels = avio_rl32(s->pb);
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if (st->codec->channels <= 0 ||
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st->codec->channels > INT_MAX / 0x20)
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return AVERROR_INVALIDDATA;
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st->codec->sample_rate = avio_rl32(s->pb);
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}
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st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_DAT4;
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st->codec->block_align = 0x20 * st->codec->channels;
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break;
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case MKTAG('W', 'I', 'I', '_'):
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avio_skip(s->pb, 44);
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coding = avio_rl32(s->pb);
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if (coding != MKTAG('D', 'A', 'T', '4') &&
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coding != MKTAG('D', 'A', 'T', '8')) {
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avpriv_request_sample(s, "Unsupported coding: %X", coding);
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return AVERROR_PATCHWELCOME;
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}
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avio_skip(s->pb, 4);
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st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_DAT4;
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st->codec->channels = avio_rl32(s->pb);
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if (st->codec->channels <= 0 ||
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st->codec->channels > INT_MAX / 0x20)
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return AVERROR_INVALIDDATA;
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st->codec->sample_rate = avio_rl32(s->pb);
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st->codec->block_align = 0x20 * st->codec->channels;
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break;
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case MKTAG('X', 'E', '_', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_DAT4;
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st->codec->channels = 2;
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st->codec->sample_rate = 32000;
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st->codec->block_align = 0x20 * st->codec->channels;
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break;
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case MKTAG('P', 'S', 'P', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
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st->codec->channels = 2;
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st->codec->sample_rate = 32768;
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st->codec->block_align = 0x80 * st->codec->channels;
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break;
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case MKTAG('P', 'S', '2', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
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st->codec->channels = 2;
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st->codec->sample_rate = 32000;
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st->codec->block_align = 0x80 * st->codec->channels;
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break;
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default:
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avpriv_request_sample(s, "Unsupported type: %X", type);
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return AVERROR_PATCHWELCOME;
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}
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} else if (version == 6 || version == 5 || version == 4) {
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type = avio_rl32(s->pb);
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avio_skip(s->pb, 20);
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codec->channels = 2;
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switch (type) {
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case MKTAG('G', 'C', '_', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_DAT4;
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st->codec->block_align = 0x20 * st->codec->channels;
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st->codec->sample_rate = 32000;
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offset = avio_rb32(s->pb);
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break;
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case MKTAG('P', 'S', '2', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
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st->codec->block_align = 0x80 * st->codec->channels;
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st->codec->sample_rate = 32000;
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offset = avio_rl32(s->pb);
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break;
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case MKTAG('X', 'B', '_', '_'):
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st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_DAT4;
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st->codec->block_align = 0x20 * st->codec->channels;
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st->codec->sample_rate = 44100;
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offset = avio_rl32(s->pb);
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break;
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default:
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avpriv_request_sample(s, "Unsupported type: %X", type);
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return AVERROR_PATCHWELCOME;
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}
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} else {
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av_assert0(0);
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}
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avio_seek(s->pb, offset, SEEK_SET);
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avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
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return 0;
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}
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static int musx_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVCodecContext *codec = s->streams[0]->codec;
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return av_get_packet(s->pb, pkt, codec->block_align);
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}
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AVInputFormat ff_musx_demuxer = {
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.name = "musx",
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.long_name = NULL_IF_CONFIG_SMALL("Eurocom MUSX"),
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.read_probe = musx_probe,
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.read_header = musx_read_header,
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.read_packet = musx_read_packet,
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.extensions = "musx",
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};
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@ -30,8 +30,8 @@
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#include "libavutil/version.h"
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#define LIBAVFORMAT_VERSION_MAJOR 57
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#define LIBAVFORMAT_VERSION_MINOR 29
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#define LIBAVFORMAT_VERSION_MICRO 101
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#define LIBAVFORMAT_VERSION_MINOR 30
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#define LIBAVFORMAT_VERSION_MICRO 100
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#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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LIBAVFORMAT_VERSION_MINOR, \
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