[FFmpeg-devel] [PATCH v3] lavu: add an AV_FRAME_DATA_GAMMA side data type

[Rostislav Pehlivanov]

On 6 November 2017 at 17:38, Rostislav Pehlivanov <atomnuker at gmail.com>
wrote:

> Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>
> ---
>  doc/APIchanges      | 3 +++
>  libavutil/frame.h   | 6 ++++++
>  libavutil/version.h | 2 +-
>  3 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/doc/APIchanges b/doc/APIchanges
> index 1490d67f27..75051deaf8 100644
> --- a/doc/APIchanges
> +++ b/doc/APIchanges
> @@ -15,6 +15,9 @@ libavutil:     2017-10-21
>
>  API changes, most recent first:
>
> +2017-11-06 - xxxxxxx - lavu 56.01.100 - frame.h
> +  Add the AV_FRAME_DATA_GAMMA side data type.
> +
>  -------- 8< --------- FFmpeg 3.4 was cut here -------- 8< ---------
>
>  2017-09-28 - b6cf66ae1c - lavc 57.106.104 - avcodec.h
> diff --git a/libavutil/frame.h b/libavutil/frame.h
> index 0c6aab1c02..64dcf3a397 100644
> --- a/libavutil/frame.h
> +++ b/libavutil/frame.h
> @@ -141,6 +141,12 @@ enum AVFrameSideDataType {
>       * metadata key entry "name".
>       */
>      AV_FRAME_DATA_ICC_PROFILE,
> +
> +    /**
> +     * The data contains an AVRational which describes the exponent
> needed to
> +     * compensate for nonlinearity in the input signal.
> +     */
> +    AV_FRAME_DATA_GAMMA,
>  };
>
>  enum AVActiveFormatDescription {
> diff --git a/libavutil/version.h b/libavutil/version.h
> index 1bc4b2a6cb..cf8ec498e4 100644
> --- a/libavutil/version.h
> +++ b/libavutil/version.h
> @@ -80,7 +80,7 @@
>
>
>  #define LIBAVUTIL_VERSION_MAJOR  56
> -#define LIBAVUTIL_VERSION_MINOR   0
> +#define LIBAVUTIL_VERSION_MINOR   1
>  #define LIBAVUTIL_VERSION_MICRO 100
>
>  #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
> --
> 2.15.0.403.gc27cc4dac6
>
>

Patch dropped, jamrial suggested a much more reasonable approach by using
the metadata.