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app: add gimp_bpp_to_babl_format_with_alpha()

This commit is contained in:
Michael Natterer 2012-03-18 15:00:08 +01:00
parent f5839e785e
commit 5933f222c9
2 changed files with 57 additions and 11 deletions
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44
app/gegl/gimp-gegl-utils.c
View File

@ -78,6 +78,50 @@ gimp_bpp_to_babl_format (guint bpp,
return NULL;
}
/**
* gimp_bpp_to_babl_format_with_alpha:
* @bpp: bytes per pixel
* @linear: whether the pixels are linear or gamma-corrected.
*
* Return the Babl format to use for a given number of bytes per pixel.
* This function assumes that the data is 8bit.
*
* Return value: the Babl format to use
**/
const Babl *
gimp_bpp_to_babl_format_with_alpha (guint bpp,
gboolean linear)
{
g_return_val_if_fail (bpp > 0 && bpp <= 4, NULL);
if (linear)
{
switch (bpp)
{
case 1:
case 2:
return babl_format ("YA u8");
case 3:
case 4:
return babl_format ("RGBA u8");
}
}
else
{
switch (bpp)
{
case 1:
case 2:
return babl_format ("Y'A u8");
case 3:
case 4:
return babl_format ("R'G'B'A u8");
}
}
return NULL;
}
const gchar *
gimp_layer_mode_to_gegl_operation (GimpLayerModeEffects mode)
{

24
app/gegl/gimp-gegl-utils.h
View File

@ -25,21 +25,23 @@
#include <gdk-pixbuf/gdk-pixbuf.h> /* temp hack */
const Babl * gimp_bpp_to_babl_format (guint bpp,
gboolean linear) G_GNUC_CONST;
const Babl * gimp_bpp_to_babl_format (guint bpp,
gboolean linear) G_GNUC_CONST;
const Babl * gimp_bpp_to_babl_format_with_alpha (guint bpp,
gboolean linear) G_GNUC_CONST;
const gchar * gimp_layer_mode_to_gegl_operation (GimpLayerModeEffects mode) G_GNUC_CONST;
const gchar * gimp_interpolation_to_gegl_filter (GimpInterpolationType interpolation) G_GNUC_CONST;
const gchar * gimp_layer_mode_to_gegl_operation (GimpLayerModeEffects mode) G_GNUC_CONST;
const gchar * gimp_interpolation_to_gegl_filter (GimpInterpolationType interpolation) G_GNUC_CONST;
GeglBuffer * gimp_tile_manager_create_buffer (TileManager *tm,
const Babl *format,
gboolean write);
GeglBuffer * gimp_pixbuf_create_buffer (GdkPixbuf *pixbuf);
GeglBuffer * gimp_tile_manager_create_buffer (TileManager *tm,
const Babl *format,
gboolean write);
GeglBuffer * gimp_pixbuf_create_buffer (GdkPixbuf *pixbuf);
void gimp_gegl_buffer_refetch_tiles (GeglBuffer *buffer);
void gimp_gegl_buffer_refetch_tiles (GeglBuffer *buffer);
void gimp_gegl_color_set_rgba (GeglColor *color,
const GimpRGB *rgb);
void gimp_gegl_color_set_rgba (GeglColor *color,
const GimpRGB *rgb);
#endif /* __GIMP_GEGL_UTILS_H__ */