[FFmpeg-devel] [PATCH] DTS-HD demuxer
Paul B Mahol
onemda at gmail.com
Mon Oct 8 12:00:37 CEST 2012
Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
configure | 1 +
doc/general.texi | 1 +
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/dtshddec.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 141 insertions(+)
create mode 100644 libavformat/dtshddec.c
diff --git a/configure b/configure
index 85fab2d..9b724e7 100755
--- a/configure
+++ b/configure
@@ -1798,6 +1798,7 @@ asf_stream_muxer_select="asf_muxer"
avisynth_demuxer_deps="avisynth"
dirac_demuxer_select="dirac_parser"
dts_demuxer_select="dca_parser"
+dtshd_demuxer_select="dca_parser"
eac3_demuxer_select="ac3_parser"
f4v_muxer_select="mov_muxer"
flac_demuxer_select="flac_parser"
diff --git a/doc/general.texi b/doc/general.texi
index 9cba7bb..7f50c11 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -287,6 +287,7 @@ library:
@item raw Dirac @tab X @tab X
@item raw DNxHD @tab X @tab X
@item raw DTS @tab X @tab X
+ at item raw DTS-HD @tab @tab X
@item raw E-AC-3 @tab X @tab X
@item raw FLAC @tab X @tab X
@item raw GSM @tab @tab X
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 1fd616b..6f8a9fa 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -80,6 +80,7 @@ OBJS-$(CONFIG_DIRAC_MUXER) += rawenc.o
OBJS-$(CONFIG_DNXHD_DEMUXER) += dnxhddec.o rawdec.o
OBJS-$(CONFIG_DNXHD_MUXER) += rawenc.o
OBJS-$(CONFIG_DSICIN_DEMUXER) += dsicin.o
+OBJS-$(CONFIG_DTSHD_DEMUXER) += dtshddec.o
OBJS-$(CONFIG_DTS_DEMUXER) += dtsdec.o rawdec.o
OBJS-$(CONFIG_DTS_MUXER) += rawenc.o
OBJS-$(CONFIG_DV_DEMUXER) += dv.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index f1e8edc..00f11f4 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -88,6 +88,7 @@ void av_register_all(void)
REGISTER_MUXDEMUX (DNXHD, dnxhd);
REGISTER_DEMUXER (DSICIN, dsicin);
REGISTER_MUXDEMUX (DTS, dts);
+ REGISTER_DEMUXER (DTSHD, dtshd);
REGISTER_MUXDEMUX (DV, dv);
REGISTER_DEMUXER (DXA, dxa);
REGISTER_DEMUXER (EA, ea);
diff --git a/libavformat/dtshddec.c b/libavformat/dtshddec.c
new file mode 100644
index 0000000..e9e0984
--- /dev/null
+++ b/libavformat/dtshddec.c
@@ -0,0 +1,137 @@
+/*
+ * Raw DTS-HD demuxer
+ * Copyright (c) 2012 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/intreadwrite.h"
+#include "libavutil/dict.h"
+#include "avformat.h"
+
+#define AUPR_HDR 0x415550522D484452
+#define AUPRINFO 0x41555052494E464F
+#define BITSHVTB 0x4249545348565442
+#define BLACKOUT 0x424C41434B4F5554
+#define BRANCHPT 0x4252414E43485054
+#define BUILDVER 0x4255494C44564552
+#define CORESSMD 0x434F524553534D44
+#define DTSHDHDR 0x4454534844484452
+#define EXTSS_MD 0x45585453535f4d44
+#define FILEINFO 0x46494C45494E464F
+#define NAVI_TBL 0x4E4156492D54424C
+#define STRMDATA 0x5354524D44415441
+#define TIMECODE 0x54494D45434F4445
+
+typedef struct DTSHDDemuxContext {
+ uint64_t left;
+} DTSHDDemuxContext;
+
+static int dtshd_probe(AVProbeData *p)
+{
+ if (AV_RB64(p->buf) == DTSHDHDR)
+ return AVPROBE_SCORE_MAX;
+ return 0;
+}
+
+static int dtshd_read_header(AVFormatContext *s)
+{
+ DTSHDDemuxContext *dtshd = s->priv_data;
+ AVIOContext *pb = s->pb;
+ uint64_t chunk_type, chunk_size;
+ AVStream *st;
+ int ret;
+ char *value;
+
+ st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codec->codec_id = AV_CODEC_ID_DTS;
+ st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
+
+ while (!url_feof(pb)) {
+ chunk_type = avio_rb64(pb);
+ chunk_size = avio_rb64(pb);
+
+ if (chunk_size < 4) {
+ av_log(s, AV_LOG_ERROR, "chunk size too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (chunk_size > ((uint64_t)1 << 61)) {
+ av_log(s, AV_LOG_ERROR, "chunk size too big\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ switch (chunk_type) {
+ case STRMDATA:
+ dtshd->left = chunk_size;
+ return 0;
+ break;
+ case FILEINFO:
+ value = av_malloc(chunk_size);
+ if (!value) {
+ avio_skip(pb, chunk_size);
+ break;
+ }
+ avio_read(pb, value, chunk_size);
+ value[chunk_size - 1] = 0;
+ av_dict_set(&s->metadata, "fileinfo", value,
+ AV_DICT_DONT_STRDUP_VAL);
+ break;
+ default:
+ ret = avio_skip(pb, chunk_size);
+ if (ret < 0)
+ return ret;
+ };
+ }
+
+ return AVERROR_EOF;
+}
+
+static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ DTSHDDemuxContext *dtshd = s->priv_data;
+ uint64_t size;
+ int ret;
+
+ size = FFMIN(dtshd->left, 1024);
+ if (size == 0)
+ return AVERROR_EOF;
+
+ ret = av_get_packet(s->pb, pkt, size);
+ if (ret < 0)
+ return ret;
+
+ pkt->stream_index = 0;
+ pkt->pos = avio_tell(s->pb);
+ dtshd->left -= ret;
+
+ return ret;
+}
+
+AVInputFormat ff_dtshd_demuxer = {
+ .name = "dtshd",
+ .long_name = NULL_IF_CONFIG_SMALL("raw DTS-HD"),
+ .priv_data_size = sizeof(DTSHDDemuxContext),
+ .read_probe = dtshd_probe,
+ .read_header = dtshd_read_header,
+ .read_packet = raw_read_packet,
+ .flags = AVFMT_GENERIC_INDEX,
+ .extensions = "dtshd",
+ .raw_codec_id = AV_CODEC_ID_DTS,
+};
--
1.7.11.4
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