[FFmpeg-devel] [PATCH] vf_colorspace: Added linear trc.

[Ronald S. Bultje]

Hi,

On Thu, Sep 24, 2020 at 3:01 PM Andrew Klaassen <
clawsoon-at-yahoo.com at ffmpeg.org> wrote:

> This patch adds the coefficients for the linear gamma function (1,0,1,0)
> to the colorspace filter.
>
> Signed-off-by: Andrew Klaassen <clawsoon at yahoo.com>
> ---
>  libavfilter/vf_colorspace.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/libavfilter/vf_colorspace.c b/libavfilter/vf_colorspace.c
> index 34f13d9d3c..39af74c221 100644
> --- a/libavfilter/vf_colorspace.c
> +++ b/libavfilter/vf_colorspace.c
> @@ -179,6 +179,7 @@ static const struct TransferCharacteristics
> transfer_characteristics[AVCOL_TRC_N
>      [AVCOL_TRC_GAMMA28]   = { 1.0,    0.0,    1.0 / 2.8, 0.0 },
>      [AVCOL_TRC_SMPTE170M] = { 1.099,  0.018,  0.45, 4.5 },
>      [AVCOL_TRC_SMPTE240M] = { 1.1115, 0.0228, 0.45, 4.0 },
> +    [AVCOL_TRC_LINEAR]    = { 1.0,    0.0,    1.0,  0.0 },
>      [AVCOL_TRC_IEC61966_2_1] = { 1.055, 0.0031308, 1.0 / 2.4, 12.92 },
>      [AVCOL_TRC_IEC61966_2_4] = { 1.099, 0.018, 0.45, 4.5 },
>      [AVCOL_TRC_BT2020_10] = { 1.099,  0.018,  0.45, 4.5 },
> @@ -990,6 +991,7 @@ static const AVOption colorspace_options[] = {
>      ENUM("gamma28",      AVCOL_TRC_GAMMA28,      "trc"),
>      ENUM("smpte170m",    AVCOL_TRC_SMPTE170M,    "trc"),
>      ENUM("smpte240m",    AVCOL_TRC_SMPTE240M,    "trc"),
> +    ENUM("linear",       AVCOL_TRC_LINEAR,       "trc"),
>      ENUM("srgb",         AVCOL_TRC_IEC61966_2_1, "trc"),
>      ENUM("iec61966-2-1", AVCOL_TRC_IEC61966_2_1, "trc"),
>      ENUM("xvycc",        AVCOL_TRC_IEC61966_2_4, "trc"),
> --
> 2.26.2


Merged.

Ronald