[FFmpeg-devel] [PATCH v2 3/5] avformat/matroskaenc: Write dvcC/dvvC block additional mapping

[quietvoid]

When muxing to Matroska, write the Block Additional Mapping
if there is AV_PKT_DATA_DOVI_CONF side data present.
Most of the code was implemented by Plex developers.

Signed-off-by: quietvoid <tcChlisop0 at gmail.com>
---
 libavformat/Makefile      |  2 +-
 libavformat/dovi_isom.c   | 45 +++++++++++++++++++++++++++++++++++++++
 libavformat/dovi_isom.h   |  5 +++++
 libavformat/matroskaenc.c | 32 ++++++++++++++++++++++++++++
 4 files changed, 83 insertions(+), 1 deletion(-)

diff --git a/libavformat/Makefile b/libavformat/Makefile
index 61a1fecf6c..680030014d 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -317,7 +317,7 @@ OBJS-$(CONFIG_MATROSKA_DEMUXER)          += matroskadec.o matroska.o  \
 OBJS-$(CONFIG_MATROSKA_MUXER)            += matroskaenc.o matroska.o \
                                             av1.o avc.o hevc.o isom_tags.o \
                                             flacenc_header.o avlanguage.o \
-                                            vorbiscomment.o wv.o
+                                            vorbiscomment.o wv.o dovi_isom.o
 OBJS-$(CONFIG_MCA_DEMUXER)               += mca.o
 OBJS-$(CONFIG_MCC_DEMUXER)               += mccdec.o subtitles.o
 OBJS-$(CONFIG_MD5_MUXER)                 += hashenc.o
diff --git a/libavformat/dovi_isom.c b/libavformat/dovi_isom.c
index 3eafa0d13b..15acc5cbce 100644
--- a/libavformat/dovi_isom.c
+++ b/libavformat/dovi_isom.c
@@ -19,6 +19,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavcodec/put_bits.h"
+
 #include "libavutil/dovi_meta.h"
 
 #include "avformat.h"
@@ -77,4 +79,47 @@ int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t *buf
         );
 
     return 0;
+}
+
+int ff_isom_put_dvcc_dvvc(AVFormatContext *s, uint8_t *out, int size, uint32_t *type,
+                         AVDOVIDecoderConfigurationRecord *dovi)
+{
+    PutBitContext pb;
+    init_put_bits(&pb, out, size);
+
+    if (size < ISOM_DVCC_DVVC_SIZE)
+        return AVERROR(EINVAL);
+
+    if (dovi->dv_profile > 7)
+        *type = MKBETAG('d', 'v', 'v', 'C');
+    else
+        *type = MKBETAG('d', 'v', 'c', 'C');
+
+    put_bits(&pb, 8, dovi->dv_version_major);
+    put_bits(&pb, 8, dovi->dv_version_minor);
+    put_bits(&pb, 7, dovi->dv_profile);
+    put_bits(&pb, 6, dovi->dv_level);
+    put_bits(&pb, 1, dovi->rpu_present_flag);
+    put_bits(&pb, 1, dovi->el_present_flag);
+    put_bits(&pb, 1, dovi->bl_present_flag);
+    put_bits(&pb, 4, dovi->dv_bl_signal_compatibility_id);
+
+    put_bits(&pb, 28, 0); /* reserved */
+    put_bits32(&pb, 0); /* reserved */
+    put_bits32(&pb, 0); /* reserved */
+    put_bits32(&pb, 0); /* reserved */
+    put_bits32(&pb, 0); /* reserved */
+    flush_put_bits(&pb);
+
+    av_log(s, AV_LOG_DEBUG, "DOVI in %s box, version: %d.%d, profile: %d, level: %d, "
+           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+           dovi->dv_profile > 7 ? "dvvC" : "dvcC",
+           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 put_bytes_output(&pb);
 }
\ No newline at end of file
diff --git a/libavformat/dovi_isom.h b/libavformat/dovi_isom.h
index 9d9a05bdb0..b58ab1bea0 100644
--- a/libavformat/dovi_isom.h
+++ b/libavformat/dovi_isom.h
@@ -23,7 +23,12 @@
 #define AVFORMAT_DOVI_ISOM_H
 
 #include "avformat.h"
+#include "libavutil/dovi_meta.h"
+
+#define ISOM_DVCC_DVVC_SIZE 24
 
 int ff_isom_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const uint8_t *buf_ptr, uint64_t size);
+int ff_isom_put_dvcc_dvvc(AVFormatContext *s, uint8_t *out, int size, uint32_t *type,
+                         AVDOVIDecoderConfigurationRecord *dovi);
 
 #endif /* AVFORMAT_DOVI_ISOM_H */
\ No newline at end of file
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 039f20988a..a54f7b5feb 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -54,6 +54,8 @@
 #include "libavcodec/xiph.h"
 #include "libavcodec/mpeg4audio.h"
 
+#include "libavformat/dovi_isom.h"
+
 /* Level 1 elements we create a SeekHead entry for:
  * Info, Tracks, Chapters, Attachments, Tags (potentially twice) and Cues */
 #define MAX_SEEKHEAD_ENTRIES 7
@@ -1115,6 +1117,33 @@ static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb,
     return 0;
 }
 
+static int mkv_write_dovi(AVFormatContext *s, AVIOContext *pb, AVStream *st)
+{
+    int ret;
+    AVDOVIDecoderConfigurationRecord *dovi = (AVDOVIDecoderConfigurationRecord *)
+                                             av_stream_get_side_data(st, AV_PKT_DATA_DOVI_CONF, NULL);
+
+    if (dovi) {
+        ebml_master mapping;
+        uint8_t buf[ISOM_DVCC_DVVC_SIZE];
+        uint32_t type;
+        int size;
+
+        if ((ret = ff_isom_put_dvcc_dvvc(s, buf, sizeof(buf), &type, dovi)) < 0)
+            return ret;
+
+        size = ret;
+
+        mapping = start_ebml_master(pb, MATROSKA_ID_TRACKBLKADDMAPPING, ISOM_DVCC_DVVC_SIZE);
+        put_ebml_string(pb, MATROSKA_ID_BLKADDIDNAME, "Dolby Vision configuration");
+        put_ebml_uint(pb, MATROSKA_ID_BLKADDIDTYPE, type);
+        put_ebml_binary(pb, MATROSKA_ID_BLKADDIDEXTRADATA, buf, size);
+        end_ebml_master(pb, mapping);
+    }
+
+    return 0;
+}
+
 static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
                            AVStream *st, mkv_track *track, AVIOContext *pb,
                            int is_default)
@@ -1380,6 +1409,9 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
         return AVERROR(EINVAL);
     }
 
+    if ((ret = mkv_write_dovi(s, pb, st)) < 0)
+        return ret;
+
     if (mkv->mode != MODE_WEBM || par->codec_id != AV_CODEC_ID_WEBVTT) {
         track->codecpriv_offset = avio_tell(pb);
         ret = mkv_write_codecprivate(s, pb, par, native_id, qt_id);
-- 
2.33.0