gboolean
gimp_gegl_mask_is_empty (GeglBuffer *buffer)
{
GeglBufferIterator *iter;
const Babl *format;
gint bpp;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), FALSE);
format = gegl_buffer_get_format (buffer);
bpp = babl_format_get_bytes_per_pixel (format);
iter = gegl_buffer_iterator_new (buffer, NULL, 0, format,
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (iter))
{
if (! gegl_memeq_zero (iter->items[0].data, bpp * iter->length))
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
}
return TRUE;
}
gboolean
gimp_gegl_mask_is_empty (GeglBuffer *buffer)
{
GeglBufferIterator *iter;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), FALSE);
iter = gegl_buffer_iterator_new (buffer, NULL, 0, babl_format ("Y float"),
GEGL_BUFFER_READ, GEGL_ABYSS_NONE);
while (gegl_buffer_iterator_next (iter))
{
gfloat *data = iter->data[0];
gint i;
for (i = 0; i < iter->length; i++)
{
if (data[i])
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
}
}
return TRUE;
}
gboolean
gegl_buffer_iterator_next (GeglBufferIterator *iter)
{
GeglBufferIteratorPriv *priv = iter->priv;
if (priv->state == GeglIteratorState_Start)
{
int index;
GeglBuffer *primary = priv->sub_iter[0].buffer;
if (primary->tile_width == primary->extent.width
&& primary->tile_height == primary->extent.height
&& priv->sub_iter[0].full_rect.width == primary->tile_width
&& priv->sub_iter[0].full_rect.height == primary->tile_height
&& priv->sub_iter[0].full_rect.x == primary->extent.x
&& priv->sub_iter[0].full_rect.y == primary->extent.y
&& priv->sub_iter[0].buffer->extent.x == iter->roi[0].x
&& priv->sub_iter[0].buffer->extent.y == iter->roi[0].y
&& FALSE) /* XXX: conditions are not strict enough, GIMPs TIFF
plug-in fails; but GEGLs buffer test suite passes */
{
if (gegl_cl_is_accelerated ())
for (index = 0; index < priv->num_buffers; index++)
{
SubIterState *sub = &priv->sub_iter[index];
gegl_buffer_cl_cache_flush (sub->buffer, &sub->full_rect);
}
linear_shortcut (iter);
return TRUE;
}
prepare_iteration (iter);
if (gegl_cl_is_accelerated ())
for (index = 0; index < priv->num_buffers; index++)
{
SubIterState *sub = &priv->sub_iter[index];
gegl_buffer_cl_cache_flush (sub->buffer, &sub->full_rect);
}
initialize_rects (iter);
load_rects (iter);
return TRUE;
}
else if (priv->state == GeglIteratorState_InRows)
{
int index;
for (index = 0; index < priv->num_buffers; index++)
{
iter->data[index] = ((char *)iter->data[index]) + priv->sub_iter[index].row_stride;
iter->roi[index].y += 1;
}
priv->remaining_rows -= 1;
if (priv->remaining_rows == 0)
priv->state = GeglIteratorState_InTile;
return TRUE;
}
else if (priv->state == GeglIteratorState_InTile)
{
int index;
for (index = 0; index < priv->num_buffers; index++)
{
release_tile (iter, index);
}
if (increment_rects (iter) == FALSE)
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
load_rects (iter);
return TRUE;
}
else
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
}
GeglBuffer *
gimp_drawable_transform_buffer_flip (GimpDrawable *drawable,
GimpContext *context,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
const Babl *format;
GeglBuffer *new_buffer;
GeglBufferIterator *iter;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint bpp;
gint orig_x, orig_y;
gint orig_width, orig_height;
gint new_x, new_y;
gint new_width, new_height;
gint x, y;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (orig_buffer), NULL);
g_return_val_if_fail (buffer_profile != NULL, NULL);
g_return_val_if_fail (new_offset_x != NULL, NULL);
g_return_val_if_fail (new_offset_y != NULL, NULL);
*buffer_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (drawable));
orig_x = orig_offset_x;
orig_y = orig_offset_y;
orig_width = gegl_buffer_get_width (orig_buffer);
orig_height = gegl_buffer_get_height (orig_buffer);
new_x = orig_x;
new_y = orig_y;
new_width = orig_width;
new_height = orig_height;
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
new_x = RINT (-((gdouble) orig_x +
(gdouble) orig_width - axis) + axis);
break;
case GIMP_ORIENTATION_VERTICAL:
new_y = RINT (-((gdouble) orig_y +
(gdouble) orig_height - axis) + axis);
break;
case GIMP_ORIENTATION_UNKNOWN:
g_return_val_if_reached (NULL);
break;
}
format = gegl_buffer_get_format (orig_buffer);
bpp = babl_format_get_bytes_per_pixel (format);
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
new_width, new_height),
format);
if (clip_result && (new_x != orig_x || new_y != orig_y))
{
GimpRGB bg;
GeglColor *color;
gint clip_x, clip_y;
gint clip_width, clip_height;
*new_offset_x = orig_x;
*new_offset_y = orig_y;
/* Use transparency, rather than the bg color, as the "outside" color of
* channels, and drawables with an alpha channel.
*/
if (GIMP_IS_CHANNEL (drawable) || babl_format_has_alpha (format))
{
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
}
else
{
gimp_context_get_background (context, &bg);
gimp_pickable_srgb_to_image_color (GIMP_PICKABLE (drawable),
&bg, &bg);
}
color = gimp_gegl_color_new (&bg, gimp_drawable_get_space (drawable));
gegl_buffer_set_color (new_buffer, NULL, color);
g_object_unref (color);
if (gimp_rectangle_intersect (orig_x, orig_y, orig_width, orig_height,
new_x, new_y, new_width, new_height,
&clip_x, &clip_y,
&clip_width, &clip_height))
{
orig_x = new_x = clip_x - orig_x;
orig_y = new_y = clip_y - orig_y;
}
orig_width = new_width = clip_width;
orig_height = new_height = clip_height;
}
else
{
*new_offset_x = new_x;
*new_offset_y = new_y;
orig_x = 0;
orig_y = 0;
new_x = 0;
new_y = 0;
}
if (new_width == 0 && new_height == 0)
return new_buffer;
dest_rect.x = new_x;
dest_rect.y = new_y;
dest_rect.width = new_width;
dest_rect.height = new_height;
iter = gegl_buffer_iterator_new (new_buffer, &dest_rect, 0, NULL,
GEGL_BUFFER_WRITE, GEGL_ABYSS_NONE, 1);
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
while (gegl_buffer_iterator_next (iter))
{
gint stride = iter->items[0].roi.width * bpp;
src_rect = iter->items[0].roi;
src_rect.x = (orig_x + orig_width) -
(iter->items[0].roi.x - dest_rect.x) -
iter->items[0].roi.width;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, iter->items[0].data,
stride, GEGL_ABYSS_NONE);
for (y = 0; y < iter->items[0].roi.height; y++)
{
guint8 *left = iter->items[0].data;
guint8 *right = iter->items[0].data;
left += y * stride;
right += y * stride + (iter->items[0].roi.width - 1) * bpp;
for (x = 0; x < iter->items[0].roi.width / 2; x++)
{
guint8 temp[bpp];
memcpy (temp, left, bpp);
memcpy (left, right, bpp);
memcpy (right, temp, bpp);
left += bpp;
right -= bpp;
}
}
}
break;
case GIMP_ORIENTATION_VERTICAL:
while (gegl_buffer_iterator_next (iter))
{
gint stride = iter->items[0].roi.width * bpp;
src_rect = iter->items[0].roi;
src_rect.y = (orig_y + orig_height) -
(iter->items[0].roi.y - dest_rect.y) -
iter->items[0].roi.height;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, iter->items[0].data,
stride, GEGL_ABYSS_NONE);
for (x = 0; x < iter->items[0].roi.width; x++)
{
guint8 *top = iter->items[0].data;
guint8 *bottom = iter->items[0].data;
top += x * bpp;
bottom += x * bpp + (iter->items[0].roi.height - 1) * stride;
for (y = 0; y < iter->items[0].roi.height / 2; y++)
{
guint8 temp[bpp];
memcpy (temp, top, bpp);
memcpy (top, bottom, bpp);
memcpy (bottom, temp, bpp);
top += stride;
bottom -= stride;
}
}
}
break;
case GIMP_ORIENTATION_UNKNOWN:
gegl_buffer_iterator_stop (iter);
break;
}
return new_buffer;
}
gboolean
gegl_buffer_iterator_next (GeglBufferIterator *iter)
{
GeglBufferIteratorPriv *priv = iter->priv;
if (priv->state == GeglIteratorState_Start)
{
int index;
prepare_iteration (iter);
if (gegl_cl_is_accelerated ())
for (index = 0; index < priv->num_buffers; index++)
{
SubIterState *sub = &priv->sub_iter[index];
gegl_buffer_cl_cache_flush (sub->buffer, &sub->full_rect);
}
initialize_rects (iter);
load_rects (iter);
return TRUE;
}
else if (priv->state == GeglIteratorState_InRows)
{
int index;
for (index = 0; index < priv->num_buffers; index++)
{
iter->data[index] = ((char *)iter->data[index]) + priv->sub_iter[index].row_stride;
iter->roi[index].y += 1;
}
priv->remaining_rows -= 1;
if (priv->remaining_rows == 0)
priv->state = GeglIteratorState_InTile;
return TRUE;
}
else if (priv->state == GeglIteratorState_InTile)
{
int index;
for (index = 0; index < priv->num_buffers; index++)
{
release_tile (iter, index);
}
if (increment_rects (iter) == FALSE)
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
load_rects (iter);
return TRUE;
}
else
{
gegl_buffer_iterator_stop (iter);
return FALSE;
}
}
gboolean
gegl_buffer_iterator_next (GeglBufferIterator *iterator)
{
GeglBufferIterators *i = (gpointer)iterator;
gboolean result = FALSE;
gint no;
if (i->is_finished)
g_error ("%s called on finished buffer iterator", G_STRFUNC);
if (i->iteration_no == 0)
{
for (no=0; no<i->iterators;no++)
{
gint j;
gboolean found = FALSE;
for (j=0; j<no; j++)
if (i->buffer[no]==i->buffer[j])
{
found = TRUE;
break;
}
if (!found)
gegl_buffer_lock (i->buffer[no]);
if (gegl_cl_is_accelerated ())
gegl_buffer_cl_cache_flush (i->buffer[no], &i->rect[no]);
}
}
else
{
/* complete pending write work */
for (no=0; no<i->iterators;no++)
{
if (i->flags[no] & GEGL_BUFFER_WRITE)
{
if (i->flags[no] & GEGL_BUFFER_SCAN_COMPATIBLE &&
i->flags[no] & GEGL_BUFFER_FORMAT_COMPATIBLE &&
i->roi[no].width == i->i[no].buffer->tile_storage->tile_width && (i->flags[no] & GEGL_BUFFER_FORMAT_COMPATIBLE))
{ /* direct access, don't need to do anything */
#if DEBUG_DIRECT
direct_write += i->roi[no].width * i->roi[no].height;
#endif
}
else
{
#if DEBUG_DIRECT
in_direct_write += i->roi[no].width * i->roi[no].height;
#endif
ensure_buf (i, no);
/* XXX: should perhaps use _set_unlocked, and keep the lock in the
* iterator.
*/
gegl_buffer_set (i->buffer[no], &(i->roi[no]), 0, i->format[no], i->buf[no], GEGL_AUTO_ROWSTRIDE); /* XXX: use correct level */
}
}
}
}
g_assert (i->iterators > 0);
/* then we iterate all */
for (no=0; no<i->iterators;no++)
{
if (i->flags[no] & GEGL_BUFFER_SCAN_COMPATIBLE)
{
gboolean res;
res = gegl_buffer_tile_iterator_next (&i->i[no]);
if (no == 0)
{
result = res;
}
i->roi[no] = i->i[no].roi2;
/* since they were scan compatible this should be true */
if (res != result)
{
g_print ("%i==%i != 0==%i\n", no, res, result);
}
g_assert (res == result);
if ((i->flags[no] & GEGL_BUFFER_FORMAT_COMPATIBLE) &&
i->roi[no].width == i->i[no].buffer->tile_storage->tile_width
)
{
/* direct access */
i->data[no]=i->i[no].sub_data;
#if DEBUG_DIRECT
direct_read += i->roi[no].width * i->roi[no].height;
#endif
}
else
{
ensure_buf (i, no);
if (i->flags[no] & GEGL_BUFFER_READ)
{
gegl_buffer_get_unlocked (i->buffer[no], 1.0, &(i->roi[no]), i->format[no], i->buf[no], GEGL_AUTO_ROWSTRIDE);
}
i->data[no]=i->buf[no];
#if DEBUG_DIRECT
in_direct_read += i->roi[no].width * i->roi[no].height;
#endif
}
}
else
{
/* we copy the roi from iterator 0 */
i->roi[no] = i->roi[0];
i->roi[no].x += (i->rect[no].x-i->rect[0].x);
i->roi[no].y += (i->rect[no].y-i->rect[0].y);
ensure_buf (i, no);
if (i->flags[no] & GEGL_BUFFER_READ)
{
gegl_buffer_get_unlocked (i->buffer[no], 1.0, &(i->roi[no]), i->format[no], i->buf[no], GEGL_AUTO_ROWSTRIDE);
}
i->data[no]=i->buf[no];
#if DEBUG_DIRECT
in_direct_read += i->roi[no].width * i->roi[no].height;
#endif
}
i->length = i->roi[no].width * i->roi[no].height;
}
i->iteration_no++;
if (result == FALSE)
gegl_buffer_iterator_stop (iterator);
return result;
}
