[FFmpeg-cvslog] avformat: add MTAF demuxer
Paul B Mahol
git at videolan.org
Sat May 21 18:54:36 CEST 2016
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun May 15 20:35:14 2016 +0200| [4da4bfcdc9008e1794cbc627c7acfde06ee48237] | committer: Paul B Mahol
avformat: add MTAF demuxer
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4da4bfcdc9008e1794cbc627c7acfde06ee48237
---
Changelog | 1 +
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/mtaf.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++
libavformat/version.h | 2 +-
5 files changed, 85 insertions(+), 1 deletion(-)
diff --git a/Changelog b/Changelog
index 003b69c..697b430 100644
--- a/Changelog
+++ b/Changelog
@@ -36,6 +36,7 @@ version <next>:
- IFF ANIM demuxer & decoder
- Direct Stream Transfer (DST) decoder
- loudnorm filter
+- MTAF demuxer and decoder
version 3.0:
- Common Encryption (CENC) MP4 encoding and decoding support
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 742aff5..6684ead 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -301,6 +301,7 @@ OBJS-$(CONFIG_MPL2_DEMUXER) += mpl2dec.o subtitles.o
OBJS-$(CONFIG_MSF_DEMUXER) += msf.o
OBJS-$(CONFIG_MPSUB_DEMUXER) += mpsubdec.o subtitles.o
OBJS-$(CONFIG_MSNWC_TCP_DEMUXER) += msnwc_tcp.o
+OBJS-$(CONFIG_MTAF_DEMUXER) += mtaf.o
OBJS-$(CONFIG_MTV_DEMUXER) += mtv.o
OBJS-$(CONFIG_MUSX_DEMUXER) += musx.o
OBJS-$(CONFIG_MV_DEMUXER) += mvdec.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index e6ee8d6..0a38793 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -209,6 +209,7 @@ void av_register_all(void)
REGISTER_DEMUXER (MPSUB, mpsub);
REGISTER_DEMUXER (MSF, msf);
REGISTER_DEMUXER (MSNWC_TCP, msnwc_tcp);
+ REGISTER_DEMUXER (MTAF, mtaf);
REGISTER_DEMUXER (MTV, mtv);
REGISTER_DEMUXER (MUSX, musx);
REGISTER_DEMUXER (MV, mv);
diff --git a/libavformat/mtaf.c b/libavformat/mtaf.c
new file mode 100644
index 0000000..b25c2aa
--- /dev/null
+++ b/libavformat/mtaf.c
@@ -0,0 +1,81 @@
+/*
+ * MTAF demuxer
+ * Copyright (c) 2016 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/channel_layout.h"
+#include "libavutil/intreadwrite.h"
+#include "avformat.h"
+#include "internal.h"
+
+static int mtaf_probe(AVProbeData *p)
+{
+ if (p->buf_size < 0x44)
+ return 0;
+
+ if (AV_RL32(p->buf) != MKTAG('M','T','A','F') ||
+ AV_RL32(p->buf + 0x40) != MKTAG('H','E','A','D'))
+ return 0;
+
+ return AVPROBE_SCORE_MAX;
+}
+
+static int mtaf_read_header(AVFormatContext *s)
+{
+ int stream_count;
+ AVStream *st;
+
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+
+ avio_skip(s->pb, 0x5c);
+ st->duration = avio_rl32(s->pb);
+ avio_skip(s->pb, 1);
+ stream_count = avio_r8(s->pb);
+ if (!stream_count)
+ return AVERROR_INVALIDDATA;
+
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_ADPCM_MTAF;
+ st->codecpar->channels = 2 * stream_count;
+ st->codecpar->sample_rate = 48000;
+ st->codecpar->block_align = 0x110 * st->codecpar->channels / 2;
+ avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
+
+ avio_seek(s->pb, 0x800, SEEK_SET);
+
+ return 0;
+}
+
+static int mtaf_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ AVCodecParameters *par = s->streams[0]->codecpar;
+
+ return av_get_packet(s->pb, pkt, par->block_align);
+}
+
+AVInputFormat ff_mtaf_demuxer = {
+ .name = "mtaf",
+ .long_name = NULL_IF_CONFIG_SMALL("Konami PS2 MTAF"),
+ .read_probe = mtaf_probe,
+ .read_header = mtaf_read_header,
+ .read_packet = mtaf_read_packet,
+ .extensions = "mtaf",
+};
diff --git a/libavformat/version.h b/libavformat/version.h
index 7f721da..65b99ee 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 57
-#define LIBAVFORMAT_VERSION_MINOR 36
+#define LIBAVFORMAT_VERSION_MINOR 37
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
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