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avutil/dovi_meta: add AVDOVIDataMapping.nlq_pivots

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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.

Signed-off-by: quietvoid <tcChlisop0@gmail.com>
Signed-off-by: Niklas Haas <git@haasn.dev>
This commit is contained in:
quietvoid 2022-08-06 09:42:59 -04:00 • committed by Niklas Haas
parent 591e27d1e7
commit 78076ede29
4 changed files with 13 additions and 2 deletions
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3
doc/APIchanges
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@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
API changes, most recent first:
2024-04-xx - xxxxxxxxxx - lavu 59.11.100 - dovi_meta.h
Add AVDOVIDataMapping.nlq_pivots.
2024-03-29 - xxxxxxxxxx - lavf 61.3.100 - avformat.h
Add AVFormatContext.duration_probesize.

9
libavcodec/dovi_rpu.c
View file

@ -110,7 +110,7 @@ int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame)
/* Copy only the parts of these structs known to us at compiler-time. */
#define COPY(t, a, b, last) memcpy(a, b, offsetof(t, last) + sizeof((b)->last))
COPY(AVDOVIRpuDataHeader, av_dovi_get_header(dovi), &s->header, disable_residual_flag);
COPY(AVDOVIDataMapping, av_dovi_get_mapping(dovi), s->mapping, nlq[2].linear_deadzone_threshold);
COPY(AVDOVIDataMapping, av_dovi_get_mapping(dovi), s->mapping, nlq_pivots);
COPY(AVDOVIColorMetadata, av_dovi_get_color(dovi), s->color, source_diagonal);
return 0;
}
@ -347,7 +347,14 @@ 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.

1
libavutil/dovi_meta.h
View file

@ -147,6 +147,7 @@ typedef struct AVDOVIDataMapping {
uint32_t num_x_partitions;
uint32_t num_y_partitions;
AVDOVINLQParams nlq[3]; /* per component */
uint16_t nlq_pivots[2];
} AVDOVIDataMapping;
/**

2
libavutil/version.h
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@ -79,7 +79,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 59
#define LIBAVUTIL_VERSION_MINOR 10
#define LIBAVUTIL_VERSION_MINOR 11
#define LIBAVUTIL_VERSION_MICRO 100
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \