Re: [FFmpeg-devel] [PATCH v3 1/2] lavu/dovi_meta - add fields for ext_mapping_idc

[Niklas Haas <ffmpeg@haasn.xyz>]

On Wed, 22 May 2024 15:50:43 +0000 Cosmin Stejerean via ffmpeg-devel <ffmpeg-devel@ffmpeg.org> wrote:
> From: Cosmin Stejerean <cosmin@cosmin.at>
> 
> ---
>  libavutil/dovi_meta.h | 2 ++
>  libavutil/version.h   | 2 +-
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/libavutil/dovi_meta.h b/libavutil/dovi_meta.h
> index e10332f8d7..e168075a24 100644
> --- a/libavutil/dovi_meta.h
> +++ b/libavutil/dovi_meta.h
> @@ -91,6 +91,8 @@ typedef struct AVDOVIRpuDataHeader {
>      uint8_t spatial_resampling_filter_flag;
>      uint8_t el_spatial_resampling_filter_flag;
>      uint8_t disable_residual_flag;
> +    uint8_t ext_mapping_idc_0_4; /* extended base layer inverse mapping indicator */
> +    uint8_t ext_mapping_idc_5_7; /* reserved */
>  } AVDOVIRpuDataHeader;

What value ranges have you seen for this indicator? Is it possible that
some values would extend the RPU in other ways, adding more bits that we
need to parse?

Maybe we should enforce this to be a well-known value just to be on the
safe side, until we receive public documentation on its purpose.

>  
>  enum AVDOVIMappingMethod {
> diff --git a/libavutil/version.h b/libavutil/version.h
> index 3221c4c592..9c7146c228 100644
> --- a/libavutil/version.h
> +++ b/libavutil/version.h
> @@ -79,7 +79,7 @@
>   */
>  
>  #define LIBAVUTIL_VERSION_MAJOR  59
> -#define LIBAVUTIL_VERSION_MINOR  19
> +#define LIBAVUTIL_VERSION_MINOR  20
>  #define LIBAVUTIL_VERSION_MICRO 100
>  
>  #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
> -- 
> 2.42.1
> 
> 
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