[FFmpeg-devel] [PATCH 0/2] DOVI: Add NLQ pivots to AVDOVIDataMapping

[FFmpeg-devel] [PATCH 0/2] DOVI: Add NLQ pivots to AVDOVIDataMapping

[quietvoid]

The NLQ pivots are not documented but should be present
in the header for profile 7 RPU format.
It has been verified using Dolby's verification toolkit.

With the pivots parsed, the parsed values for
num_{x,y}_partitions are correct and usually equal to 1.

quietvoid (2):
  libavutil/dovi_meta: Add nlq_pivots to AVDOVIDataMapping
  fate: Add test to parse profile 7 DOVI RPU

 fftools/ffprobe.c                     |   4 +
 libavcodec/dovi_rpu.c                 |   7 +
 libavfilter/vf_showinfo.c             |   8 +
 libavutil/dovi_meta.h                 |   1 +
 tests/fate/hevc.mak                   |   3 +
 tests/ref/fate/hevc-dovi-profile7-rpu | 296 ++++++++++++++++++++++++++
 6 files changed, 319 insertions(+)
 create mode 100644 tests/ref/fate/hevc-dovi-profile7-rpu

-- 
2.36.1

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[FFmpeg-devel] [PATCH 1/2] libavutil/dovi_meta: Add nlq_pivots to AVDOVIDataMapping

[quietvoid]

The NLQ pivots are not documented but should be present
in the header for profile 7 RPU format.
It has been verified using Dolby's verification toolkit.

Also implemented the parsing in libavcodec/dovi_rpu.c.
And added the info to ffprobe and showinfo.
---
 fftools/ffprobe.c         | 4 ++++
 libavcodec/dovi_rpu.c     | 7 +++++++
 libavfilter/vf_showinfo.c | 8 ++++++++
 libavutil/dovi_meta.h     | 1 +
 4 files changed, 20 insertions(+)

diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
index c44297c1fa..63eb9b32ae 100644
--- a/fftools/ffprobe.c
+++ b/fftools/ffprobe.c
@@ -1934,6 +1934,10 @@ static void print_dovi_metadata(WriterContext *w, const AVDOVIMetadata *dovi)
             break;
         }
 
+        if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
+            print_list_fmt("nlq_pivots", "%"PRIu16, 2, mapping->nlq_pivots[idx]);
+        }
+
         print_int("num_x_partitions",          mapping->num_x_partitions);
         print_int("num_y_partitions",          mapping->num_y_partitions);
 
diff --git a/libavcodec/dovi_rpu.c b/libavcodec/dovi_rpu.c
index a87562c8a3..17837eb845 100644
--- a/libavcodec/dovi_rpu.c
+++ b/libavcodec/dovi_rpu.c
@@ -315,7 +315,14 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size)
         }
 
         if (use_nlq) {
+            int nlq_pivot = 0;
             vdr->mapping.nlq_method_idc = get_bits(gb, 3);
+
+            for (int i = 0; i < 2; i++) {
+                nlq_pivot += get_bits(gb, hdr->bl_bit_depth);
+                vdr->mapping.nlq_pivots[i] = av_clip_uint16(nlq_pivot);
+            }
+
             /**
              * The patent mentions another legal value, NLQ_MU_LAW, but it's
              * not documented anywhere how to parse or apply that type of NLQ.
diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
index 12d39310ef..2148d202b1 100644
--- a/libavfilter/vf_showinfo.c
+++ b/libavfilter/vf_showinfo.c
@@ -543,6 +543,14 @@ static void dump_dovi_metadata(AVFilterContext *ctx, const AVFrameSideData *sd)
     av_log(ctx, AV_LOG_INFO, "mapping_color_space=%"PRIu8"; ", mapping->mapping_color_space);
     av_log(ctx, AV_LOG_INFO, "mapping_chroma_format_idc=%"PRIu8"; ", mapping->mapping_chroma_format_idc);
     av_log(ctx, AV_LOG_INFO, "nlq_method_idc=%d; ", (int) mapping->nlq_method_idc);
+
+    if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
+        av_log(ctx, AV_LOG_INFO, "nlq_pivots={ ");
+        for (int i = 0; i < 2; i++)
+            av_log(ctx, AV_LOG_INFO, "%"PRIu16" ", mapping->nlq_pivots[i]);
+        av_log(ctx, AV_LOG_INFO, "}; ");
+    }
+
     av_log(ctx, AV_LOG_INFO, "num_x_partitions=%"PRIu32"; ", mapping->num_x_partitions);
     av_log(ctx, AV_LOG_INFO, "num_y_partitions=%"PRIu32"\n", mapping->num_y_partitions);
 
diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
index 3d11e02bff..c7c5ba721f 100644
--- a/libavutil/dovi_meta.h
+++ b/libavutil/dovi_meta.h
@@ -144,6 +144,7 @@ typedef struct AVDOVIDataMapping {
 
     /* Non-linear inverse quantization */
     enum AVDOVINLQMethod nlq_method_idc;
+    uint16_t nlq_pivots[2]; /* nlq_pred_pivot_value */
     uint32_t num_x_partitions;
     uint32_t num_y_partitions;
     AVDOVINLQParams nlq[3]; /* per component */
-- 
2.36.1

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[FFmpeg-devel] [PATCH 2/2] fate: Add test to parse profile 7 DOVI RPU

[quietvoid]

---
 tests/fate/hevc.mak                   |   3 +
 tests/ref/fate/hevc-dovi-profile7-rpu | 296 ++++++++++++++++++++++++++
 2 files changed, 299 insertions(+)
 create mode 100644 tests/ref/fate/hevc-dovi-profile7-rpu

diff --git a/tests/fate/hevc.mak b/tests/fate/hevc.mak
index 2f16e3a29f..549436cb39 100644
--- a/tests/fate/hevc.mak
+++ b/tests/fate/hevc.mak
@@ -254,6 +254,9 @@ FATE_HEVC-$(call FRAMECRC, HEVC, HEVC) += fate-hevc-cabac-tudepth
 fate-hevc-small422chroma: CMD = framecrc -flags unaligned -i $(TARGET_SAMPLES)/hevc/food.hevc -pix_fmt yuv422p10le -vf scale
 FATE_HEVC-$(call FRAMECRC, HEVC, HEVC, HEVC_PARSER SCALE_FILTER) += fate-hevc-small422chroma
 
+fate-hevc-dovi-profile7-rpu: CMD = probeframes -show_entries frame=side_data_list -select_streams 1 -read_intervals "%+\#2" $(TARGET_SAMPLES)/mov/dovi-p7.mp4
+FATE_HEVC_FFPROBE-$(call DEMDEC, MOV, HEVC) += fate-hevc-dovi-profile7-rpu
+
 FATE_SAMPLES_AVCONV += $(FATE_HEVC-yes)
 FATE_SAMPLES_FFPROBE += $(FATE_HEVC_FFPROBE-yes)
 
diff --git a/tests/ref/fate/hevc-dovi-profile7-rpu b/tests/ref/fate/hevc-dovi-profile7-rpu
new file mode 100644
index 0000000000..7fa5d20f01
--- /dev/null
+++ b/tests/ref/fate/hevc-dovi-profile7-rpu
@@ -0,0 +1,296 @@
+[FRAME]
+[SIDE_DATA]
+side_data_type=Mastering display metadata
+red_x=34000/50000
+red_y=16000/50000
+green_x=13250/50000
+green_y=34500/50000
+blue_x=7500/50000
+blue_y=3000/50000
+white_point_x=15635/50000
+white_point_y=16450/50000
+min_luminance=1/10000
+max_luminance=100000000/10000
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Content light level metadata
+max_content=1000
+max_average=400
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Dolby Vision RPU Data
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Dolby Vision Metadata
+rpu_type=2
+rpu_format=18
+vdr_rpu_profile=1
+vdr_rpu_level=0
+chroma_resampling_explicit_filter_flag=0
+coef_data_type=0
+coef_log2_denom=23
+vdr_rpu_normalized_idc=1
+bl_video_full_range_flag=0
+bl_bit_depth=10
+el_bit_depth=10
+vdr_bit_depth=12
+spatial_resampling_filter_flag=0
+el_spatial_resampling_filter_flag=1
+disable_residual_flag=0
+vdr_rpu_id=0
+mapping_color_space=0
+mapping_chroma_format_idc=0
+nlq_method_idc=0
+nlq_method_idc_name=linear_dz
+nlq_pivots=0 1023
+num_x_partitions=1
+num_y_partitions=1
+[COMPONENT]
+pivots=0 128 256 384 512 640 768 896 1023
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+[COMPONENT]
+pivots=0 1023
+[SECTION]
+mapping_idc=1
+mapping_idc_name=mmr
+mmr_order=3
+mmr_constant=448998
+mmr_coef=-1262056 8122466 -1703266 1622123 808554 -829469 -13459 801251 694657 3697830 -1819391 -772917 -654425 78034 -181321 -324811 -2213356 -716030 761880 365184 2545494
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+[COMPONENT]
+pivots=0 1023
+[SECTION]
+mapping_idc=1
+mapping_idc_name=mmr
+mmr_order=3
+mmr_constant=30364
+mmr_coef=-1369971 645159 9055254 -106426 2546351 -2246880 672220 1356576 1789054 -3311517 -1372035 -4554569 -548063 722319 57239 -2130348 3956345 1480062 -1696575 3919674 3414157
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+dm_metadata_id=0
+scene_refresh_flag=0
+ycc_to_rgb_matrix=9574/8192 0/8192 13802/8192 9574/8192 -1540/8192 -5348/8192 9574/8192 17610/8192 0/8192
+ycc_to_rgb_offset=16777216/268435456 134217728/268435456 134217728/268435456
+rgb_to_lms_matrix=7222/16384 8771/16384 390/16384 2654/16384 12430/16384 1300/16384 0/16384 422/16384 15962/16384
+signal_eotf=65535
+signal_eotf_param0=0
+signal_eotf_param1=0
+signal_eotf_param2=0
+signal_bit_depth=12
+signal_color_space=0
+signal_chroma_format=0
+signal_full_range_flag=1
+source_min_pq=7
+source_max_pq=3079
+source_diagonal=42
+[/SIDE_DATA]
+[/FRAME]
+[FRAME]
+[SIDE_DATA]
+side_data_type=Mastering display metadata
+red_x=34000/50000
+red_y=16000/50000
+green_x=13250/50000
+green_y=34500/50000
+blue_x=7500/50000
+blue_y=3000/50000
+white_point_x=15635/50000
+white_point_y=16450/50000
+min_luminance=1/10000
+max_luminance=100000000/10000
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Content light level metadata
+max_content=1000
+max_average=400
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Dolby Vision RPU Data
+[/SIDE_DATA]
+[SIDE_DATA]
+side_data_type=Dolby Vision Metadata
+rpu_type=2
+rpu_format=18
+vdr_rpu_profile=1
+vdr_rpu_level=0
+chroma_resampling_explicit_filter_flag=0
+coef_data_type=0
+coef_log2_denom=23
+vdr_rpu_normalized_idc=1
+bl_video_full_range_flag=0
+bl_bit_depth=10
+el_bit_depth=10
+vdr_bit_depth=12
+spatial_resampling_filter_flag=0
+el_spatial_resampling_filter_flag=1
+disable_residual_flag=0
+vdr_rpu_id=0
+mapping_color_space=0
+mapping_chroma_format_idc=0
+nlq_method_idc=0
+nlq_method_idc_name=linear_dz
+nlq_pivots=0 1023
+num_x_partitions=1
+num_y_partitions=1
+[COMPONENT]
+pivots=0 128 256 384 512 640 768 896 1023
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+[SECTION]
+mapping_idc=0
+mapping_idc_name=polynomial
+poly_order=1
+poly_coef=0 8388608
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+[COMPONENT]
+pivots=0 1023
+[SECTION]
+mapping_idc=1
+mapping_idc_name=mmr
+mmr_order=3
+mmr_constant=448998
+mmr_coef=-1262056 8122466 -1703266 1622123 808554 -829469 -13459 801251 694657 3697830 -1819391 -772917 -654425 78034 -181321 -324811 -2213356 -716030 761880 365184 2545494
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+[COMPONENT]
+pivots=0 1023
+[SECTION]
+mapping_idc=1
+mapping_idc_name=mmr
+mmr_order=3
+mmr_constant=30364
+mmr_coef=-1369971 645159 9055254 -106426 2546351 -2246880 672220 1356576 1789054 -3311517 -1372035 -4554569 -548063 722319 57239 -2130348 3956345 1480062 -1696575 3919674 3414157
+[/SECTION]
+nlq_offset=512
+vdr_in_max=1048576
+linear_deadzone_slope=2048
+linear_deadzone_threshold=0
+[/COMPONENT]
+dm_metadata_id=0
+scene_refresh_flag=0
+ycc_to_rgb_matrix=9574/8192 0/8192 13802/8192 9574/8192 -1540/8192 -5348/8192 9574/8192 17610/8192 0/8192
+ycc_to_rgb_offset=16777216/268435456 134217728/268435456 134217728/268435456
+rgb_to_lms_matrix=7222/16384 8771/16384 390/16384 2654/16384 12430/16384 1300/16384 0/16384 422/16384 15962/16384
+signal_eotf=65535
+signal_eotf_param0=0
+signal_eotf_param1=0
+signal_eotf_param2=0
+signal_bit_depth=12
+signal_color_space=0
+signal_chroma_format=0
+signal_full_range_flag=1
+source_min_pq=7
+source_max_pq=3079
+source_diagonal=42
+[/SIDE_DATA]
+[/FRAME]
-- 
2.36.1

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Re: [FFmpeg-devel] [PATCH 1/2] libavutil/dovi_meta: Add nlq_pivots to AVDOVIDataMapping

[Andreas Rheinhardt]

quietvoid:
> The NLQ pivots are not documented but should be present
> in the header for profile 7 RPU format.
> It has been verified using Dolby's verification toolkit.
> 
> Also implemented the parsing in libavcodec/dovi_rpu.c.
> And added the info to ffprobe and showinfo.
> ---
>  fftools/ffprobe.c         | 4 ++++
>  libavcodec/dovi_rpu.c     | 7 +++++++
>  libavfilter/vf_showinfo.c | 8 ++++++++
>  libavutil/dovi_meta.h     | 1 +
>  4 files changed, 20 insertions(+)
> 
> diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
> index c44297c1fa..63eb9b32ae 100644
> --- a/fftools/ffprobe.c
> +++ b/fftools/ffprobe.c
> @@ -1934,6 +1934,10 @@ static void print_dovi_metadata(WriterContext *w, const AVDOVIMetadata *dovi)
>              break;
>          }
>  
> +        if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
> +            print_list_fmt("nlq_pivots", "%"PRIu16, 2, mapping->nlq_pivots[idx]);
> +        }
> +
>          print_int("num_x_partitions",          mapping->num_x_partitions);
>          print_int("num_y_partitions",          mapping->num_y_partitions);
>  
> diff --git a/libavcodec/dovi_rpu.c b/libavcodec/dovi_rpu.c
> index a87562c8a3..17837eb845 100644
> --- a/libavcodec/dovi_rpu.c
> +++ b/libavcodec/dovi_rpu.c
> @@ -315,7 +315,14 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size)
>          }
>  
>          if (use_nlq) {
> +            int nlq_pivot = 0;
>              vdr->mapping.nlq_method_idc = get_bits(gb, 3);
> +
> +            for (int i = 0; i < 2; i++) {
> +                nlq_pivot += get_bits(gb, hdr->bl_bit_depth);
> +                vdr->mapping.nlq_pivots[i] = av_clip_uint16(nlq_pivot);
> +            }
> +
>              /**
>               * The patent mentions another legal value, NLQ_MU_LAW, but it's
>               * not documented anywhere how to parse or apply that type of NLQ.
> diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
> index 12d39310ef..2148d202b1 100644
> --- a/libavfilter/vf_showinfo.c
> +++ b/libavfilter/vf_showinfo.c
> @@ -543,6 +543,14 @@ static void dump_dovi_metadata(AVFilterContext *ctx, const AVFrameSideData *sd)
>      av_log(ctx, AV_LOG_INFO, "mapping_color_space=%"PRIu8"; ", mapping->mapping_color_space);
>      av_log(ctx, AV_LOG_INFO, "mapping_chroma_format_idc=%"PRIu8"; ", mapping->mapping_chroma_format_idc);
>      av_log(ctx, AV_LOG_INFO, "nlq_method_idc=%d; ", (int) mapping->nlq_method_idc);
> +
> +    if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
> +        av_log(ctx, AV_LOG_INFO, "nlq_pivots={ ");
> +        for (int i = 0; i < 2; i++)
> +            av_log(ctx, AV_LOG_INFO, "%"PRIu16" ", mapping->nlq_pivots[i]);
> +        av_log(ctx, AV_LOG_INFO, "}; ");
> +    }
> +
>      av_log(ctx, AV_LOG_INFO, "num_x_partitions=%"PRIu32"; ", mapping->num_x_partitions);
>      av_log(ctx, AV_LOG_INFO, "num_y_partitions=%"PRIu32"\n", mapping->num_y_partitions);
>  
> diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
> index 3d11e02bff..c7c5ba721f 100644
> --- a/libavutil/dovi_meta.h
> +++ b/libavutil/dovi_meta.h
> @@ -144,6 +144,7 @@ typedef struct AVDOVIDataMapping {
>  
>      /* Non-linear inverse quantization */
>      enum AVDOVINLQMethod nlq_method_idc;
> +    uint16_t nlq_pivots[2]; /* nlq_pred_pivot_value */
>      uint32_t num_x_partitions;
>      uint32_t num_y_partitions;
>      AVDOVINLQParams nlq[3]; /* per component */

This breaks ABI. New fields must be added at the end.

- Andreas
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Re: [FFmpeg-devel] [PATCH 1/2] libavutil/dovi_meta: Add nlq_pivots to AVDOVIDataMapping

[quietvoid]

On Sat, Jun 11, 2022 at 12:48 PM Andreas Rheinhardt
<andreas.rheinhardt@outlook.com> wrote:
>
> quietvoid:
> > The NLQ pivots are not documented but should be present
> > in the header for profile 7 RPU format.
> > It has been verified using Dolby's verification toolkit.
> >
> > Also implemented the parsing in libavcodec/dovi_rpu.c.
> > And added the info to ffprobe and showinfo.
> > ---
> >  fftools/ffprobe.c         | 4 ++++
> >  libavcodec/dovi_rpu.c     | 7 +++++++
> >  libavfilter/vf_showinfo.c | 8 ++++++++
> >  libavutil/dovi_meta.h     | 1 +
> >  4 files changed, 20 insertions(+)
> >
> > diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
> > index c44297c1fa..63eb9b32ae 100644
> > --- a/fftools/ffprobe.c
> > +++ b/fftools/ffprobe.c
> > @@ -1934,6 +1934,10 @@ static void print_dovi_metadata(WriterContext *w, const AVDOVIMetadata *dovi)
> >              break;
> >          }
> >
> > +        if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
> > +            print_list_fmt("nlq_pivots", "%"PRIu16, 2, mapping->nlq_pivots[idx]);
> > +        }
> > +
> >          print_int("num_x_partitions",          mapping->num_x_partitions);
> >          print_int("num_y_partitions",          mapping->num_y_partitions);
> >
> > diff --git a/libavcodec/dovi_rpu.c b/libavcodec/dovi_rpu.c
> > index a87562c8a3..17837eb845 100644
> > --- a/libavcodec/dovi_rpu.c
> > +++ b/libavcodec/dovi_rpu.c
> > @@ -315,7 +315,14 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size)
> >          }
> >
> >          if (use_nlq) {
> > +            int nlq_pivot = 0;
> >              vdr->mapping.nlq_method_idc = get_bits(gb, 3);
> > +
> > +            for (int i = 0; i < 2; i++) {
> > +                nlq_pivot += get_bits(gb, hdr->bl_bit_depth);
> > +                vdr->mapping.nlq_pivots[i] = av_clip_uint16(nlq_pivot);
> > +            }
> > +
> >              /**
> >               * The patent mentions another legal value, NLQ_MU_LAW, but it's
> >               * not documented anywhere how to parse or apply that type of NLQ.
> > diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
> > index 12d39310ef..2148d202b1 100644
> > --- a/libavfilter/vf_showinfo.c
> > +++ b/libavfilter/vf_showinfo.c
> > @@ -543,6 +543,14 @@ static void dump_dovi_metadata(AVFilterContext *ctx, const AVFrameSideData *sd)
> >      av_log(ctx, AV_LOG_INFO, "mapping_color_space=%"PRIu8"; ", mapping->mapping_color_space);
> >      av_log(ctx, AV_LOG_INFO, "mapping_chroma_format_idc=%"PRIu8"; ", mapping->mapping_chroma_format_idc);
> >      av_log(ctx, AV_LOG_INFO, "nlq_method_idc=%d; ", (int) mapping->nlq_method_idc);
> > +
> > +    if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
> > +        av_log(ctx, AV_LOG_INFO, "nlq_pivots={ ");
> > +        for (int i = 0; i < 2; i++)
> > +            av_log(ctx, AV_LOG_INFO, "%"PRIu16" ", mapping->nlq_pivots[i]);
> > +        av_log(ctx, AV_LOG_INFO, "}; ");
> > +    }
> > +
> >      av_log(ctx, AV_LOG_INFO, "num_x_partitions=%"PRIu32"; ", mapping->num_x_partitions);
> >      av_log(ctx, AV_LOG_INFO, "num_y_partitions=%"PRIu32"\n", mapping->num_y_partitions);
> >
> > diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
> > index 3d11e02bff..c7c5ba721f 100644
> > --- a/libavutil/dovi_meta.h
> > +++ b/libavutil/dovi_meta.h
> > @@ -144,6 +144,7 @@ typedef struct AVDOVIDataMapping {
> >
> >      /* Non-linear inverse quantization */
> >      enum AVDOVINLQMethod nlq_method_idc;
> > +    uint16_t nlq_pivots[2]; /* nlq_pred_pivot_value */
> >      uint32_t num_x_partitions;
> >      uint32_t num_y_partitions;
> >      AVDOVINLQParams nlq[3]; /* per component */
>
> This breaks ABI. New fields must be added at the end.

Thanks. Fixed in v2:
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-June/297723.html

>
> - Andreas
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