[FFmpeg-devel] [PATCH 1/5] avutil/dovi_meta: add dv_md_compression to cfg record

[FFmpeg-devel] [PATCH 1/5] avutil/dovi_meta: add dv_md_compression to cfg record

[Niklas Haas]

From: Niklas Haas <git@haasn.dev>

This field is used to signal the compression method in use.
---
 doc/APIchanges        | 3 +++
 libavutil/dovi_meta.h | 9 +++++++++
 libavutil/version.h   | 2 +-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 5751216b24..80ab3012c3 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
 
 API changes, most recent first:
 
+2024-07-16 - xxxxxxxxxx - lavu 59.29.100 - dovi_meta.h
+  Add AVDOVIDecoderConfigurationRecord.dv_md_compression.
+
 2024-07-xx - xxxxxxxxxx - lavf 61 - avformat.h
   Deprecate avformat_transfer_internal_stream_timing_info()
   and av_stream_get_codec_timebase() without replacement.
diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
index e168075a24..c942d0e133 100644
--- a/libavutil/dovi_meta.h
+++ b/libavutil/dovi_meta.h
@@ -46,6 +46,7 @@
  * uint8_t  el_present_flag
  * uint8_t  bl_present_flag
  * uint8_t  dv_bl_signal_compatibility_id
+ * uint8_t  dv_md_compression, the compression method in use
  * @endcode
  *
  * @note The struct must be allocated with av_dovi_alloc() and
@@ -60,8 +61,16 @@ typedef struct AVDOVIDecoderConfigurationRecord {
     uint8_t el_present_flag;
     uint8_t bl_present_flag;
     uint8_t dv_bl_signal_compatibility_id;
+    uint8_t dv_md_compression;
 } AVDOVIDecoderConfigurationRecord;
 
+enum AVDOVICompression {
+    AV_DOVI_COMPRESSION_NONE     = 0,
+    AV_DOVI_COMPRESSION_LIMITED  = 1,
+    AV_DOVI_COMPRESSION_RESERVED = 2,
+    AV_DOVI_COMPRESSION_EXTENDED = 3,
+};
+
 /**
  * Allocate a AVDOVIDecoderConfigurationRecord structure and initialize its
  * fields to default values.
diff --git a/libavutil/version.h b/libavutil/version.h
index 814892a4d5..852eeef1d6 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  59
-#define LIBAVUTIL_VERSION_MINOR  28
+#define LIBAVUTIL_VERSION_MINOR  29
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
-- 
2.45.2

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[FFmpeg-devel] [PATCH 2/5] avformat/dovi_isom: implement dv_md_compression

[Niklas Haas]

From: Niklas Haas <git@haasn.dev>

---
 libavformat/dovi_isom.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/libavformat/dovi_isom.c b/libavformat/dovi_isom.c
index d49aa5a75f..269374cff9 100644
--- a/libavformat/dovi_isom.c
+++ b/libavformat/dovi_isom.c
@@ -57,11 +57,14 @@ int ff_isom_parse_dvcc_dvvc(void *logctx, AVStream *st,
 
     // Has enough remaining data
     if (size >= 5) {
-        dovi->dv_bl_signal_compatibility_id = ((*buf_ptr++) >> 4) & 0x0f; // 4 bits
+        uint8_t buf = *buf_ptr++;
+        dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
+        dovi->dv_md_compression = (buf >> 2) & 0x03; // 2 bits
     } else {
         // 0 stands for None
         // Dolby Vision V1.2.93 profiles and levels
         dovi->dv_bl_signal_compatibility_id = 0;
+        dovi->dv_md_compression = AV_DOVI_COMPRESSION_NONE;
     }
 
     if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
@@ -71,13 +74,14 @@ int ff_isom_parse_dvcc_dvvc(void *logctx, AVStream *st,
     }
 
     av_log(logctx, AV_LOG_TRACE, "DOVI in dvcC/dvvC/dvwC box, version: %d.%d, profile: %d, level: %d, "
-           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
+           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, compression: %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);
+           dovi->dv_bl_signal_compatibility_id,
+           dovi->dv_md_compression);
 
     return 0;
 }
@@ -97,8 +101,9 @@ void ff_isom_put_dvcc_dvvc(void *logctx, uint8_t out[ISOM_DVCC_DVVC_SIZE],
     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 & 0x0f);
+    put_bits(&pb, 2, dovi->dv_md_compression & 0x03);
 
-    put_bits(&pb, 28, 0); /* reserved */
+    put_bits(&pb, 26, 0); /* reserved */
     put_bits32(&pb, 0); /* reserved */
     put_bits32(&pb, 0); /* reserved */
     put_bits32(&pb, 0); /* reserved */
@@ -108,12 +113,14 @@ void ff_isom_put_dvcc_dvvc(void *logctx, uint8_t out[ISOM_DVCC_DVVC_SIZE],
 
     av_log(logctx, 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",
+           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, "
+           "compression: %d\n",
            dovi->dv_profile > 10 ? "dvwC" : (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);
+           dovi->dv_bl_signal_compatibility_id,
+           dovi->dv_md_compression);
 }
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH 2/5] avformat/dovi_isom: implement dv_md_compression

[Cosmin Stejerean via ffmpeg-devel]

> On Jul 16, 2024, at 1:23 PM, Niklas Haas <ffmpeg@haasn.xyz> wrote:
> 
> From: Niklas Haas <git@haasn.dev>
> 
> ---
> libavformat/dovi_isom.c | 19 +++++++++++++------
> 1 file changed, 13 insertions(+), 6 deletions(-)
> 
> diff --git a/libavformat/dovi_isom.c b/libavformat/dovi_isom.c
> index d49aa5a75f..269374cff9 100644
> --- a/libavformat/dovi_isom.c
> +++ b/libavformat/dovi_isom.c
> @@ -57,11 +57,14 @@ int ff_isom_parse_dvcc_dvvc(void *logctx, AVStream *st,
> 
>     // Has enough remaining data
>     if (size >= 5) {
> -        dovi->dv_bl_signal_compatibility_id = ((*buf_ptr++) >> 4) & 0x0f; // 4 bits
> +        uint8_t buf = *buf_ptr++;
> +        dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
> +        dovi->dv_md_compression = (buf >> 2) & 0x03; // 2 bits

This seems fine based on what this code is currently doing, but I'm curious, should this be moved to something like get_bits at some point?

>     } else {
>         // 0 stands for None
>         // Dolby Vision V1.2.93 profiles and levels
>         dovi->dv_bl_signal_compatibility_id = 0;
> +        dovi->dv_md_compression = AV_DOVI_COMPRESSION_NONE;
>     }
> 
>     if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
> @@ -71,13 +74,14 @@ int ff_isom_parse_dvcc_dvvc(void *logctx, AVStream *st,
>     }
> 
>     av_log(logctx, AV_LOG_TRACE, "DOVI in dvcC/dvvC/dvwC box, version: %d.%d, profile: %d, level: %d, "
> -           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d\n",
> +           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, compression: %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);
> +           dovi->dv_bl_signal_compatibility_id,
> +           dovi->dv_md_compression);
> 
>     return 0;
> }
> @@ -97,8 +101,9 @@ void ff_isom_put_dvcc_dvvc(void *logctx, uint8_t out[ISOM_DVCC_DVVC_SIZE],
>     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 & 0x0f);
> +    put_bits(&pb, 2, dovi->dv_md_compression & 0x03);
> 
> -    put_bits(&pb, 28, 0); /* reserved */
> +    put_bits(&pb, 26, 0); /* reserved */
>     put_bits32(&pb, 0); /* reserved */
>     put_bits32(&pb, 0); /* reserved */
>     put_bits32(&pb, 0); /* reserved */
> @@ -108,12 +113,14 @@ void ff_isom_put_dvcc_dvvc(void *logctx, uint8_t out[ISOM_DVCC_DVVC_SIZE],
> 
>     av_log(logctx, 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",
> +           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, "
> +           "compression: %d\n",

would it be more user friendly to log the display value like limited, none, extended rather than numeric value here?

>            dovi->dv_profile > 10 ? "dvwC" : (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);
> +           dovi->dv_bl_signal_compatibility_id,
> +           dovi->dv_md_compression);
> }
> -- 
> 

Overall LGTM.

- Cosmin


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[FFmpeg-devel] [PATCH 3/5] avformat/mpegts: implement dv_md_compression

[Niklas Haas]

From: Niklas Haas <git@haasn.dev>

---
 libavformat/mpegts.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index c66a1ea6ed..6b02187eb1 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -2213,10 +2213,12 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
             if (desc_end - *pp >= 1) {  // 8 bits
                 buf = get8(pp, desc_end);
                 dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
+                dovi->dv_md_compression = (buf >> 2) & 0x03; // 2 bits
             } else {
                 // 0 stands for None
                 // Dolby Vision V1.2.93 profiles and levels
                 dovi->dv_bl_signal_compatibility_id = 0;
+                dovi->dv_md_compression = AV_DOVI_COMPRESSION_NONE;
             }
 
             if (!av_packet_side_data_add(&st->codecpar->coded_side_data,
@@ -2228,14 +2230,16 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
             }
 
             av_log(fc, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, "
-                   "rpu flag: %d, el flag: %d, bl flag: %d, dependency_pid: %d, compatibility id: %d\n",
+                   "rpu flag: %d, el flag: %d, bl flag: %d, dependency_pid: %d, "
+                   "compatibility id: %d, compression: %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,
                    dependency_pid,
-                   dovi->dv_bl_signal_compatibility_id);
+                   dovi->dv_bl_signal_compatibility_id,
+                   dovi->dv_md_compression);
         }
         break;
     default:
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH 3/5] avformat/mpegts: implement dv_md_compression

[Cosmin Stejerean via ffmpeg-devel]

> On Jul 16, 2024, at 1:23 PM, Niklas Haas <ffmpeg@haasn.xyz> wrote:
> 
> From: Niklas Haas <git@haasn.dev>
> 
> ---
> libavformat/mpegts.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
> index c66a1ea6ed..6b02187eb1 100644
> --- a/libavformat/mpegts.c
> +++ b/libavformat/mpegts.c
> @@ -2213,10 +2213,12 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
>             if (desc_end - *pp >= 1) {  // 8 bits
>                 buf = get8(pp, desc_end);
>                 dovi->dv_bl_signal_compatibility_id = (buf >> 4) & 0x0f; // 4 bits
> +                dovi->dv_md_compression = (buf >> 2) & 0x03; // 2 bits
>             } else {
>                 // 0 stands for None
>                 // Dolby Vision V1.2.93 profiles and levels
>                 dovi->dv_bl_signal_compatibility_id = 0;
> +                dovi->dv_md_compression = AV_DOVI_COMPRESSION_NONE;
>             }
> 
>             if (!av_packet_side_data_add(&st->codecpar->coded_side_data,
> @@ -2228,14 +2230,16 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
>             }
> 
>             av_log(fc, AV_LOG_TRACE, "DOVI, version: %d.%d, profile: %d, level: %d, "
> -                   "rpu flag: %d, el flag: %d, bl flag: %d, dependency_pid: %d, compatibility id: %d\n",
> +                   "rpu flag: %d, el flag: %d, bl flag: %d, dependency_pid: %d, "
> +                   "compatibility id: %d, compression: %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,
>                    dependency_pid,
> -                   dovi->dv_bl_signal_compatibility_id);
> +                   dovi->dv_bl_signal_compatibility_id,
> +                   dovi->dv_md_compression);
>         }
>         break;
>     default:
> 

LGTM, although like the previous patch I'm curious if the logging should be using display names instead of integer values for compression.

- Cosmin


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[FFmpeg-devel] [PATCH 4/5] avformat/dump: implement dv_md_compression

[Niklas Haas]

From: Niklas Haas <git@haasn.dev>

---
 libavformat/dump.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/dump.c b/libavformat/dump.c
index 78b2481d90..5e1f367742 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -416,13 +416,15 @@ static void dump_dovi_conf(void *ctx, const AVPacketSideData *sd,
         (const AVDOVIDecoderConfigurationRecord *)sd->data;
 
     av_log(ctx, log_level, "version: %d.%d, profile: %d, level: %d, "
-           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d",
+           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, "
+           "compression: %d",
            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);
+           dovi->dv_bl_signal_compatibility_id,
+           dovi->dv_md_compression);
 }
 
 static void dump_s12m_timecode(void *ctx, const AVStream *st, const AVPacketSideData *sd,
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH 4/5] avformat/dump: implement dv_md_compression

[Cosmin Stejerean via ffmpeg-devel]

> On Jul 16, 2024, at 1:23 PM, Niklas Haas <ffmpeg@haasn.xyz> wrote:
> 
> From: Niklas Haas <git@haasn.dev>
> 
> ---
> libavformat/dump.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/dump.c b/libavformat/dump.c
> index 78b2481d90..5e1f367742 100644
> --- a/libavformat/dump.c
> +++ b/libavformat/dump.c
> @@ -416,13 +416,15 @@ static void dump_dovi_conf(void *ctx, const AVPacketSideData *sd,
>         (const AVDOVIDecoderConfigurationRecord *)sd->data;
> 
>     av_log(ctx, log_level, "version: %d.%d, profile: %d, level: %d, "
> -           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d",
> +           "rpu flag: %d, el flag: %d, bl flag: %d, compatibility id: %d, "
> +           "compression: %d",
>            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);
> +           dovi->dv_bl_signal_compatibility_id,
> +           dovi->dv_md_compression);
> }
> 
> static void dump_s12m_timecode(void *ctx, const AVStream *st, const AVPacketSideData *sd,
> 

LGTM

- Cosmin
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[FFmpeg-devel] [PATCH 5/5] fftools/ffprobe: implement dv_md_compression

[Niklas Haas]

From: Niklas Haas <git@haasn.dev>

---
 fftools/ffprobe.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index 0b7d4ce0d7..265718467f 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -2611,6 +2611,7 @@ static void print_pkt_side_data(WriterContext *w,
             print_int("el_present_flag", dovi->el_present_flag);
             print_int("bl_present_flag", dovi->bl_present_flag);
             print_int("dv_bl_signal_compatibility_id", dovi->dv_bl_signal_compatibility_id);
+            print_int("dv_md_compression", dovi->dv_md_compression);
         } else if (sd->type == AV_PKT_DATA_AUDIO_SERVICE_TYPE) {
             enum AVAudioServiceType *t = (enum AVAudioServiceType *)sd->data;
             print_int("service_type", *t);
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH 5/5] fftools/ffprobe: implement dv_md_compression

[Cosmin Stejerean via ffmpeg-devel]

> On Jul 16, 2024, at 1:23 PM, Niklas Haas <ffmpeg@haasn.xyz> wrote:
> 
> From: Niklas Haas <git@haasn.dev>
> 
> ---
> fftools/ffprobe.c | 1 +
> 1 file changed, 1 insertion(+)
> 
> diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
> index 0b7d4ce0d7..265718467f 100644
> --- a/fftools/ffprobe.c
> +++ b/fftools/ffprobe.c
> @@ -2611,6 +2611,7 @@ static void print_pkt_side_data(WriterContext *w,
>             print_int("el_present_flag", dovi->el_present_flag);
>             print_int("bl_present_flag", dovi->bl_present_flag);
>             print_int("dv_bl_signal_compatibility_id", dovi->dv_bl_signal_compatibility_id);
> +            print_int("dv_md_compression", dovi->dv_md_compression);
>         } else if (sd->type == AV_PKT_DATA_AUDIO_SERVICE_TYPE) {
>             enum AVAudioServiceType *t = (enum AVAudioServiceType *)sd->data;
>             print_int("service_type", *t);
> -- 
> 2.45.2
> 
> 

LGTM


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Re: [FFmpeg-devel] [PATCH 5/5] fftools/ffprobe: implement dv_md_compression

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 448 bytes --]

On Tue, Jul 16, 2024 at 01:23:17PM +0200, Niklas Haas wrote:
> From: Niklas Haas <git@haasn.dev>
> 
> ---
>  fftools/ffprobe.c | 1 +
>  1 file changed, 1 insertion(+)

breaks fate / needs update to fate

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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Re: [FFmpeg-devel] [PATCH 5/5] fftools/ffprobe: implement dv_md_compression

[Niklas Haas]

On Wed, 17 Jul 2024 20:07:54 +0200 Michael Niedermayer <michael@niedermayer.cc> wrote:
> On Tue, Jul 16, 2024 at 01:23:17PM +0200, Niklas Haas wrote:
> > From: Niklas Haas <git@haasn.dev>
> > 
> > ---
> >  fftools/ffprobe.c | 1 +
> >  1 file changed, 1 insertion(+)
> 
> breaks fate / needs update to fate

Fixed, thanks for pointing that out.

> 
> thx
> 
> [...]
> -- 
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
> 
> The smallest minority on earth is the individual. Those who deny 
> individual rights cannot claim to be defenders of minorities. - Ayn Rand
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Re: [FFmpeg-devel] [PATCH 1/5] avutil/dovi_meta: add dv_md_compression to cfg record

[Cosmin Stejerean via ffmpeg-devel]

> On Jul 16, 2024, at 1:23 PM, Niklas Haas <ffmpeg@haasn.xyz> wrote:
> 
> From: Niklas Haas <git@haasn.dev>
> 
> This field is used to signal the compression method in use.
> ---
> doc/APIchanges        | 3 +++
> libavutil/dovi_meta.h | 9 +++++++++
> libavutil/version.h   | 2 +-
> 3 files changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/doc/APIchanges b/doc/APIchanges
> index 5751216b24..80ab3012c3 100644
> --- a/doc/APIchanges
> +++ b/doc/APIchanges
> @@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
> 
> API changes, most recent first:
> 
> +2024-07-16 - xxxxxxxxxx - lavu 59.29.100 - dovi_meta.h
> +  Add AVDOVIDecoderConfigurationRecord.dv_md_compression.
> +
> 2024-07-xx - xxxxxxxxxx - lavf 61 - avformat.h
>   Deprecate avformat_transfer_internal_stream_timing_info()
>   and av_stream_get_codec_timebase() without replacement.
> diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
> index e168075a24..c942d0e133 100644
> --- a/libavutil/dovi_meta.h
> +++ b/libavutil/dovi_meta.h
> @@ -46,6 +46,7 @@
>  * uint8_t  el_present_flag
>  * uint8_t  bl_present_flag
>  * uint8_t  dv_bl_signal_compatibility_id
> + * uint8_t  dv_md_compression, the compression method in use
>  * @endcode
>  *
>  * @note The struct must be allocated with av_dovi_alloc() and
> @@ -60,8 +61,16 @@ typedef struct AVDOVIDecoderConfigurationRecord {
>     uint8_t el_present_flag;
>     uint8_t bl_present_flag;
>     uint8_t dv_bl_signal_compatibility_id;
> +    uint8_t dv_md_compression;
> } AVDOVIDecoderConfigurationRecord;
> 
> +enum AVDOVICompression {
> +    AV_DOVI_COMPRESSION_NONE     = 0,
> +    AV_DOVI_COMPRESSION_LIMITED  = 1,
> +    AV_DOVI_COMPRESSION_RESERVED = 2,
> +    AV_DOVI_COMPRESSION_EXTENDED = 3,
> +};
> +
> 

Looks good to me.

- Cosmin


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