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video-color: add Adobe RGB primaries and transfer function

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This commit is contained in:
Wim Taymans 2016-01-21 10:45:40 +01:00
parent 773e2476e6
commit c99caa6b37
2 changed files with 15 additions and 3 deletions
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10
gst-libs/gst/video/video-color.c
View file

@ -282,7 +282,9 @@ static const GstVideoColorPrimariesInfo color_primaries[] = {
{GST_VIDEO_COLOR_PRIMARIES_FILM, WP_C, 0.681, 0.319, 0.243, 0.692, 0.145,
0.049},
{GST_VIDEO_COLOR_PRIMARIES_BT2020, WP_D65, 0.708, 0.292, 0.170, 0.797, 0.131,
0.046}
0.046},
{GST_VIDEO_COLOR_PRIMARIES_ADOBERGB, WP_D65, 0.64, 0.33, 0.21, 0.71, 0.15,
0.06}
};
/**
@ -459,6 +461,9 @@ gst_video_color_transfer_encode (GstVideoTransferFunction func, gdouble val)
else
res = 1.0993 * pow (val, 0.45) - 0.0993;
break;
case GST_VIDEO_TRANSFER_ADOBERGB:
res = pow (val, 1.0 / 2.19921875);
break;
}
return res;
}
@ -544,6 +549,9 @@ gst_video_color_transfer_decode (GstVideoTransferFunction func, gdouble val)
else
res = pow ((val + 0.0993) / 1.0993, 1.0 / 0.45);
break;
case GST_VIDEO_TRANSFER_ADOBERGB:
res = pow (val, 2.19921875);
break;
}
return res;
}

8
gst-libs/gst/video/video-color.h
View file

@ -88,6 +88,7 @@ gboolean gst_video_color_matrix_get_Kr_Kb (GstVideoColorMatrix matrix, gdouble *
* @GST_VIDEO_TRANSFER_BT2020_12: Gamma 2.2 curve with a linear segment in the lower
* range. Used for BT.2020 with 12 bits per
* component. Since: 1.6.
* @GST_VIDEO_TRANSFER_ADOBERGB: Gamma 2.19921875. Since: 1.8
*
* The video transfer function defines the formula for converting between
* non-linear RGB (R'G'B') and linear RGB
@ -104,7 +105,8 @@ typedef enum {
GST_VIDEO_TRANSFER_GAMMA28,
GST_VIDEO_TRANSFER_LOG100,
GST_VIDEO_TRANSFER_LOG316,
GST_VIDEO_TRANSFER_BT2020_12
GST_VIDEO_TRANSFER_BT2020_12,
GST_VIDEO_TRANSFER_ADOBERGB
} GstVideoTransferFunction;
gdouble gst_video_color_transfer_encode (GstVideoTransferFunction func, gdouble val);
@ -120,6 +122,7 @@ gdouble gst_video_color_transfer_decode (GstVideoTransferFunction func, gdo
* @GST_VIDEO_COLOR_PRIMARIES_SMPTE240M: SMPTE240M primaries
* @GST_VIDEO_COLOR_PRIMARIES_FILM: Generic film
* @GST_VIDEO_COLOR_PRIMARIES_BT2020: BT2020 primaries. Since: 1.6.
* @GST_VIDEO_COLOR_PRIMARIES_ADOBERGB: Adobe RGB primaries. Since: 1.8
*
* The color primaries define the how to transform linear RGB values to and from
* the CIE XYZ colorspace.
@ -132,7 +135,8 @@ typedef enum {
GST_VIDEO_COLOR_PRIMARIES_SMPTE170M,
GST_VIDEO_COLOR_PRIMARIES_SMPTE240M,
GST_VIDEO_COLOR_PRIMARIES_FILM,
GST_VIDEO_COLOR_PRIMARIES_BT2020
GST_VIDEO_COLOR_PRIMARIES_BT2020,
GST_VIDEO_COLOR_PRIMARIES_ADOBERGB
} GstVideoColorPrimaries;
/**