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libgimpcolor: make gimp_color_transform_process_buffer() thread-safer 

Avoid gegl_buffer_set_format() and simply construct the formats
differently to make sure reading/writing doesn't do any color space
transform. This makes it possible again to run it on different areas
of the same buffer from different threads.
This commit is contained in:
Michael Natterer 2018-08-02 19:25:52 +02:00
parent 0ce4db749d
commit 3889a59197
1 changed files with 11 additions and 21 deletions
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32
libgimpcolor/gimpcolortransform.c
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@ -284,7 +284,7 @@ gimp_color_transform_new (GimpColorProfile *src_profile,
priv->transform = NULL;
}
g_printerr ("%s\n", lcms_last_error);
g_printerr ("%s: %s\n", G_STRFUNC, lcms_last_error);
}
if (! priv->transform)
@ -380,7 +380,7 @@ gimp_color_transform_new_proofing (GimpColorProfile *src_profile,
priv->transform = NULL;
}
g_printerr ("%s\n", lcms_last_error);
g_printerr ("%s: %s\n", G_STRFUNC, lcms_last_error);
}
if (! priv->transform)
@ -537,31 +537,28 @@ gimp_color_transform_process_buffer (GimpColorTransform *transform,
/* we must not do any babl color transforms when reading from
* src_buffer or writing to dest_buffer, so construct formats with
* src_buffers's and dest_buffers's encoding, and the transform's
* input and output color spaces.
* the transform's expected input and output encoding and
* src_buffer's and dest_buffers's color spaces.
*/
src_format = gegl_buffer_get_format (src_buffer);
dest_format = gegl_buffer_get_format (dest_buffer);
src_format =
babl_format_with_space (babl_format_get_encoding (src_format),
babl_format_get_space (priv->src_format));
babl_format_with_space (babl_format_get_encoding (priv->src_format),
babl_format_get_space (src_format));
dest_format =
babl_format_with_space (babl_format_get_encoding (dest_format),
babl_format_get_space (priv->dest_format));
babl_format_with_space (babl_format_get_encoding (priv->dest_format),
babl_format_get_space (dest_format));
if (src_buffer != dest_buffer)
{
gegl_buffer_set_format (src_buffer, src_format);
gegl_buffer_set_format (dest_buffer, dest_format);
iter = gegl_buffer_iterator_new (src_buffer, src_rect, 0,
priv->src_format,
src_format,
GEGL_ACCESS_READ,
GEGL_ABYSS_NONE);
gegl_buffer_iterator_add (iter, dest_buffer, dest_rect, 0,
priv->dest_format,
dest_format,
GEGL_ACCESS_WRITE,
GEGL_ABYSS_NONE);
@ -584,16 +581,11 @@ gimp_color_transform_process_buffer (GimpColorTransform *transform,
(gdouble) done_pixels /
(gdouble) total_pixels);
}
gegl_buffer_set_format (src_buffer, NULL);
gegl_buffer_set_format (dest_buffer, NULL);
}
else
{
gegl_buffer_set_format (src_buffer, src_format);
iter = gegl_buffer_iterator_new (src_buffer, src_rect, 0,
priv->src_format,
src_format,
GEGL_ACCESS_READWRITE,
GEGL_ABYSS_NONE);
@ -616,8 +608,6 @@ gimp_color_transform_process_buffer (GimpColorTransform *transform,
(gdouble) done_pixels /
(gdouble) total_pixels);
}
gegl_buffer_set_format (src_buffer, NULL);
}
g_signal_emit (transform, gimp_color_transform_signals[PROGRESS], 0,