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Add a helper for egl yuv hints

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This commit is contained in:
Matthias Clasen
2024-07-28 01:23:12 -04:00
parent c53f791cb3
commit 83ba577fa8
2 changed files with 49 additions and 0 deletions
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44
gdk/gdkdmabufegl.c
View File

@@ -289,4 +289,48 @@ gdk_dmabuf_egl_create_image (GdkDisplay *display,
return image;
}
void
gdk_dmabuf_get_egl_yuv_hints (const GdkDmabuf *dmabuf,
GdkColorState *color_state,
int *color_space_hint,
int *range_hint)
{
gboolean is_yuv;
const GdkCicp *cicp;
cicp = gdk_color_state_get_cicp (color_state);
if (cicp &&
gdk_dmabuf_fourcc_is_yuv (dmabuf->fourcc, &is_yuv) && is_yuv)
{
if (cicp->range == GDK_CICP_RANGE_NARROW)
*range_hint = EGL_YUV_NARROW_RANGE_EXT;
else
*range_hint = EGL_YUV_FULL_RANGE_EXT;
switch (cicp->matrix_coefficients)
{
case 1:
*color_space_hint = EGL_ITU_REC709_EXT;
break;
case 5:
case 6:
*color_space_hint = EGL_ITU_REC601_EXT;
break;
case 9:
*color_space_hint = EGL_ITU_REC2020_EXT;
break;
default:
*color_space_hint = 0;
*range_hint = 0;
break;
}
}
else
{
*color_space_hint = 0;
*range_hint = 0;
}
}
#endif /* HAVE_DMABUF && HAVE_EGL */

5
gdk/gdkdmabufeglprivate.h
View File

@@ -15,4 +15,9 @@ EGLImage gdk_dmabuf_egl_create_image (GdkDisplay
const GdkDmabuf *dmabuf,
int target);
void gdk_dmabuf_get_egl_yuv_hints (const GdkDmabuf *dmabuf,
GdkColorState *color_state,
int *color_space_hint,
int *range_hint);
#endif /* HAVE_DMABUF && HAVE_EGL */