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video-color: add method to get primaries info

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This commit is contained in:
Wim Taymans 2014-11-18 11:09:40 +01:00
parent 943e1319a2
commit 7c02acc544
2 changed files with 48 additions and 12 deletions
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31
gst-libs/gst/video/video-color.c
View file

@ -217,20 +217,10 @@ gst_video_color_range_offsets (GstVideoColorRange range,
}
#if 0
typedef struct
{
GstVideoColorPrimaries primaries;
gdouble xW, yW;
gdouble xR, yR;
gdouble xG, yG;
gdouble xB, yB;
} PrimariesInfo;
#define WP_C 0.31006, 0.31616
#define WP_D65 0.31271, 0.32902
static const PrimariesInfo primaries[] = {
static const GstVideoColorPrimariesInfo color_primaries[] = {
{GST_VIDEO_COLOR_PRIMARIES_UNKNOWN, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
{GST_VIDEO_COLOR_PRIMARIES_BT709, WP_D65, 0.64, 0.33, 0.30, 0.60, 0.15, 0.06},
{GST_VIDEO_COLOR_PRIMARIES_BT470M, WP_C, 0.67, 0.33, 0.21, 0.71, 0.14, 0.08},
@ -243,7 +233,24 @@ static const PrimariesInfo primaries[] = {
{GST_VIDEO_COLOR_PRIMARIES_FILM, WP_C, 0.681, 0.319, 0.243, 0.692, 0.145,
0.049}
};
#endif
/**
* gst_video_color_primaries_get_info:
* @primaries: a #GstVideoColorPrimaries
*
* Get information about the chromaticity coordinates of @primaries.
*
* Returns: a #GstVideoColorPrimariesInfo for @primaries.
*
* Since: 1.6
*/
const GstVideoColorPrimariesInfo *
gst_video_color_primaries_get_info (GstVideoColorPrimaries primaries)
{
g_return_val_if_fail (primaries < G_N_ELEMENTS (color_primaries), NULL);
return &color_primaries[primaries];
}
/**
* gst_video_color_matrix_get_Kr_Kb:

29
gst-libs/gst/video/video-color.h
View file

@ -127,6 +127,35 @@ typedef enum {
GST_VIDEO_COLOR_PRIMARIES_FILM
} GstVideoColorPrimaries;
/**
* GstVideoColorPrimariesInfo:
* @primaries: a #GstVideoColorPrimaries
* @Wx: reference white x coordinate
* @Wy: reference white y coordinate
* @Rx: red x coordinate
* @Ry: red y coordinate
* @Gx: green x coordinate
* @Gy: green y coordinate
* @Bx: blue x coordinate
* @By: blue y coordinate
*
* Structure describing the chromaticity coordinates of an RGB system. These
* values can be used to construct a matrix to transform RGB to and from the
* XYZ colorspace.
*
* Since: 1.6
*/
typedef struct {
GstVideoColorPrimaries primaries;
gdouble Wx, Wy;
gdouble Rx, Ry;
gdouble Gx, Gy;
gdouble Bx, By;
} GstVideoColorPrimariesInfo;
const GstVideoColorPrimariesInfo *
gst_video_color_primaries_get_info (GstVideoColorPrimaries primaries);
/**
* GstVideoColorimetry:
* @range: the color range. This is the valid range for the samples.