The parsing was implemented in a new dovi_isom file for the
unification of the mov/mpegts DOVI parsing into one function, in a following
patch.
Most of the Matroska elements implementation was done by Plex developers.
Signed-off-by: quietvoid <tcchlis...@gmail.com>
---
libavformat/Makefile | 2 +-
libavformat/dovi_isom.c | 80 +++++++++++++++++++++++++++++++++++++++
libavformat/dovi_isom.h | 29 ++++++++++++++
libavformat/matroskadec.c | 15 ++++++++
4 files changed, 125 insertions(+), 1 deletion(-)
create mode 100644 libavformat/dovi_isom.c
create mode 100644 libavformat/dovi_isom.h
diff --git a/libavformat/Makefile b/libavformat/Makefile
index c45caa3eed..61a1fecf6c 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -313,7 +313,7 @@ OBJS-$(CONFIG_M4V_MUXER) += rawenc.o
OBJS-$(CONFIG_MATROSKA_DEMUXER) += matroskadec.o matroska.o \
flac_picture.o isom_tags.o
rmsipr.o \
oggparsevorbis.o vorbiscomment.o \
- qtpalette.o replaygain.o
+ qtpalette.o replaygain.o
dovi_isom.o
OBJS-$(CONFIG_MATROSKA_MUXER) += matroskaenc.o matroska.o \
av1.o avc.o hevc.o isom_tags.o \
flacenc_header.o avlanguage.o \
diff --git a/libavformat/dovi_isom.c b/libavformat/dovi_isom.c
new file mode 100644
index 0000000000..2c0a49c993
--- /dev/null
+++ b/libavformat/dovi_isom.c
@@ -0,0 +1,80 @@
+/*
+ * DOVI ISO Media common code
+ * Copyright (c) 2021 quietvoid
+ *
+ * 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/dovi_meta.h"
+
+#include "avformat.h"
+#include "dovi_isom.h"
+
+int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t
*buf_ptr, uint64_t size)
+{
+ uint32_t buf;
+ AVDOVIDecoderConfigurationRecord *dovi;
+ size_t dovi_size;
+ int ret;
+
+ if (size > (1 << 30) || size < 4)
+ return AVERROR_INVALIDDATA;
+
+ dovi = av_dovi_alloc(&dovi_size);
+ if (!dovi)
+ return AVERROR(ENOMEM);
+
+ dovi->dv_version_major = *buf_ptr++; // 8 bits
+ dovi->dv_version_minor = *buf_ptr++; // 8 bits
+
+ buf = *buf_ptr++ << 8;
+ buf |= *buf_ptr++;
+
+ dovi->dv_profile = (buf >> 9) & 0x7f; // 7 bits
+ dovi->dv_level = (buf >> 3) & 0x3f; // 6 bits
+ dovi->rpu_present_flag = (buf >> 2) & 0x01; // 1 bit
+ dovi->el_present_flag = (buf >> 1) & 0x01; // 1 bit
+ dovi->bl_present_flag = buf & 0x01; // 1 bit
+
+ // Has enough remaining data
+ if (size >= 5) {
+ dovi->dv_bl_signal_compatibility_id = ((*buf_ptr++) >> 4) & 0x0f; // 4
bits
+ } else {
+ // 0 stands for None
+ // Dolby Vision V1.2.93 profiles and levels
+ dovi->dv_bl_signal_compatibility_id = 0;
+ }
+
+ ret = av_stream_add_side_data(st, AV_PKT_DATA_DOVI_CONF,
+ (uint8_t *)dovi, dovi_size);
+ if (ret < 0) {
+ av_free(dovi);
+ return ret;
+ }
+
+ av_log(s, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, "
+ "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+ dovi->dv_version_major, dovi->dv_version_minor,
+ dovi->dv_profile, dovi->dv_level,
+ dovi->rpu_present_flag,
+ dovi->el_present_flag,
+ dovi->bl_present_flag,
+ dovi->dv_bl_signal_compatibility_id
+ );
+
+ return 0;
+}
diff --git a/libavformat/dovi_isom.h b/libavformat/dovi_isom.h
new file mode 100644
index 0000000000..4c313046a7
--- /dev/null
+++ b/libavformat/dovi_isom.h
@@ -0,0 +1,29 @@
+/*
+ * DOVI ISO Media common code
+ * Copyright (c) 2021 quietvoid
+ *
+ * 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
+ */
+
+#ifndef AVFORMAT_DOVI_ISOM_H
+#define AVFORMAT_DOVI_ISOM_H
+
+#include "avformat.h"
+
+int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t
*buf_ptr, uint64_t size);
+
+#endif /* AVFORMAT_DOVI_ISOM_H */
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 74c3fbc2a4..a50851b8d3 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -51,6 +51,8 @@
#include "libavcodec/mpeg4audio.h"
#include "libavcodec/packet_internal.h"
+#include "libavformat/dovi_isom.h"
+
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
@@ -2323,15 +2325,28 @@ static int mkv_parse_video_projection(AVStream *st,
const MatroskaTrack *track,
return 0;
}
+static int mkv_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const
MatroskaTrack *track,
+ EbmlBin *bin)
+{
+ return ff_isom_parse_dvcc_dvvc(s, st, bin->data, bin->size);
+}
+
static int mkv_parse_block_addition_mappings(AVFormatContext *s, AVStream *st,
const MatroskaTrack *track)
{
const EbmlList *mappings_list = &track->block_addition_mappings;
MatroskaBlockAdditionMapping *mappings = mappings_list->elem;
+ int ret;
for (int i = 0; i < mappings_list->nb_elem; i++) {
MatroskaBlockAdditionMapping *mapping = &mappings[i];
switch (mapping->type) {
+ case MKBETAG('d','v','c','C'):
+ case MKBETAG('d','v','v','C'):
+ if ((ret = mkv_parse_dvcc_dvvc(s, st, track, &mapping->extradata))
< 0)
+ return ret;
+
+ break;
default:
av_log(s, AV_LOG_DEBUG,
"Unknown block additional mapping type %ld, value %ld, name
\"%s\"\n",
--
2.33.0
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