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app: port XCF loading to writing to the drawable's GeglBuffer

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This commit is contained in:
Michael Natterer
2012-04-02 23:32:38 +02:00
parent 3e140fd105
commit 91c39463c4
4 changed files with 159 additions and 148 deletions
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23
app/gegl/gimp-gegl-tile-compat.c
View File

@ -27,6 +27,20 @@
#include "gimp-gegl-tile-compat.h"
gint
gimp_gegl_buffer_get_n_tile_rows (GeglBuffer *buffer,
gint tile_height)
{
return (gegl_buffer_get_height (buffer) + tile_height - 1) / tile_height;
}
gint
gimp_gegl_buffer_get_n_tile_cols (GeglBuffer *buffer,
gint tile_width)
{
return (gegl_buffer_get_width (buffer) + tile_width - 1) / tile_width;
}
gboolean
gimp_gegl_buffer_get_tile_rect (GeglBuffer *buffer,
gint tile_width,
@ -39,13 +53,8 @@ gimp_gegl_buffer_get_tile_rect (GeglBuffer *buffer,
gint tile_row;
gint tile_column;
n_tile_rows =
(gegl_buffer_get_height (buffer) + tile_height - 1) /
tile_height;
n_tile_columns =
(gegl_buffer_get_width (buffer) + tile_width - 1) /
tile_width;
n_tile_rows = gimp_gegl_buffer_get_n_tile_rows (buffer, tile_height);
n_tile_columns = gimp_gegl_buffer_get_n_tile_cols (buffer, tile_width);
if (tile_num > n_tile_rows * n_tile_columns - 1)
return FALSE;

4
app/gegl/gimp-gegl-tile-compat.h
View File

@ -22,6 +22,10 @@
#define __GIMP_GEGL_TILE_COMPAT_H__
gint gimp_gegl_buffer_get_n_tile_rows (GeglBuffer *buffer,
gint tile_height);
gint gimp_gegl_buffer_get_n_tile_cols (GeglBuffer *buffer,
gint tile_width);
gboolean gimp_gegl_buffer_get_tile_rect (GeglBuffer *buffer,
gint tile_width,
gint tile_height,

155
app/xcf/xcf-load.c
View File

@ -28,12 +28,10 @@
#include "core/core-types.h"
#include "base/tile.h"
#include "base/tile-manager.h"
#include "base/tile-manager-private.h"
#include "config/gimpcoreconfig.h"
#include "gegl/gimp-gegl-tile-compat.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpdrawable-private.h" /* eek */
@ -98,14 +96,16 @@ static GimpChannel * xcf_load_channel (XcfInfo *info,
GimpImage *image);
static GimpLayerMask * xcf_load_layer_mask (XcfInfo *info,
GimpImage *image);
static gboolean xcf_load_hierarchy (XcfInfo *info,
TileManager *tiles);
static gboolean xcf_load_buffer (XcfInfo *info,
GeglBuffer *buffer);
static gboolean xcf_load_level (XcfInfo *info,
TileManager *tiles);
GeglBuffer *buffer);
static gboolean xcf_load_tile (XcfInfo *info,
Tile *tile);
GeglBuffer *buffer,
GeglRectangle *tile_rect);
static gboolean xcf_load_tile_rle (XcfInfo *info,
Tile *tile,
GeglBuffer *buffer,
GeglRectangle *tile_rect,
gint data_length);
static GimpParasite * xcf_load_parasite (XcfInfo *info);
static gboolean xcf_load_old_paths (XcfInfo *info,
@ -1147,8 +1147,8 @@ xcf_load_layer (XcfInfo *info,
if (! xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
if (! xcf_load_hierarchy (info,
gimp_drawable_get_tiles (GIMP_DRAWABLE (layer))))
if (! xcf_load_buffer (info,
gimp_drawable_get_buffer (GIMP_DRAWABLE (layer))))
goto error;
xcf_progress_update (info);
@ -1239,8 +1239,8 @@ xcf_load_channel (XcfInfo *info,
if (!xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
if (!xcf_load_hierarchy (info,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel))))
if (!xcf_load_buffer (info,
gimp_drawable_get_buffer (GIMP_DRAWABLE (channel))))
goto error;
xcf_progress_update (info);
@ -1298,8 +1298,8 @@ xcf_load_layer_mask (XcfInfo *info,
if (! xcf_seek_pos (info, hierarchy_offset, NULL))
goto error;
if (!xcf_load_hierarchy (info,
gimp_drawable_get_tiles (GIMP_DRAWABLE (layer_mask))))
if (!xcf_load_buffer (info,
gimp_drawable_get_buffer (GIMP_DRAWABLE (layer_mask))))
goto error;
xcf_progress_update (info);
@ -1316,9 +1316,10 @@ xcf_load_layer_mask (XcfInfo *info,
}
static gboolean
xcf_load_hierarchy (XcfInfo *info,
TileManager *tiles)
xcf_load_buffer (XcfInfo *info,
GeglBuffer *buffer)
{
const Babl *format;
guint32 saved_pos;
guint32 offset;
guint32 junk;
@ -1326,6 +1327,8 @@ xcf_load_hierarchy (XcfInfo *info,
gint height;
gint bpp;
format = gegl_buffer_get_format (buffer);
info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1);
info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1);
info->cp += xcf_read_int32 (info->fp, (guint32 *) &bpp, 1);
@ -1333,9 +1336,9 @@ xcf_load_hierarchy (XcfInfo *info,
/* make sure the values in the file correspond to the values
* calculated when the TileManager was created.
*/
if (width != tile_manager_width (tiles) ||
height != tile_manager_height (tiles) ||
bpp != tile_manager_bpp (tiles))
if (width != gegl_buffer_get_width (buffer) ||
height != gegl_buffer_get_height (buffer) ||
bpp != babl_format_get_bytes_per_pixel (format))
return FALSE;
/* load in the levels...we make sure that the number of levels
@ -1363,7 +1366,7 @@ xcf_load_hierarchy (XcfInfo *info,
return FALSE;
/* read in the level */
if (!xcf_load_level (info, tiles))
if (!xcf_load_level (info, buffer))
return FALSE;
/* restore the saved position so we'll be ready to
@ -1378,23 +1381,23 @@ xcf_load_hierarchy (XcfInfo *info,
static gboolean
xcf_load_level (XcfInfo *info,
TileManager *tiles)
GeglBuffer *buffer)
{
guint32 saved_pos;
guint32 offset, offset2;
gint n_tile_rows;
gint n_tile_cols;
guint ntiles;
gint width;
gint height;
gint i;
gint fail;
Tile *previous;
Tile *tile;
info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1);
info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1);
if (width != tile_manager_width (tiles) ||
height != tile_manager_height (tiles))
if (width != gegl_buffer_get_width (buffer) ||
height != gegl_buffer_get_height (buffer))
return FALSE;
/* read in the first tile offset.
@ -1405,13 +1408,14 @@ xcf_load_level (XcfInfo *info,
if (offset == 0)
return TRUE;
/* Initialise the reference for the in-memory tile-compression
*/
previous = NULL;
n_tile_rows = gimp_gegl_buffer_get_n_tile_rows (buffer, XCF_TILE_HEIGHT);
n_tile_cols = gimp_gegl_buffer_get_n_tile_cols (buffer, XCF_TILE_WIDTH);
ntiles = tiles->ntile_rows * tiles->ntile_cols;
ntiles = n_tile_rows * n_tile_cols;
for (i = 0; i < ntiles; i++)
{
GeglRectangle rect;
fail = FALSE;
if (offset == 0)
@ -1434,7 +1438,7 @@ xcf_load_level (XcfInfo *info,
/* if the offset is 0 then we need to read in the maximum possible
allowing for negative compression */
if (offset2 == 0)
offset2 = offset + TILE_WIDTH * TILE_WIDTH * 4 * 1.5;
offset2 = offset + XCF_TILE_WIDTH * XCF_TILE_WIDTH * 4 * 1.5;
/* 1.5 is probably more
than we need to allow */
@ -1443,17 +1447,19 @@ xcf_load_level (XcfInfo *info,
return FALSE;
/* get the tile from the tile manager */
tile = tile_manager_get (tiles, i, TRUE, TRUE);
gimp_gegl_buffer_get_tile_rect (buffer,
XCF_TILE_WIDTH, XCF_TILE_HEIGHT,
i, &rect);
/* read in the tile */
switch (info->compression)
{
case COMPRESS_NONE:
if (!xcf_load_tile (info, tile))
if (!xcf_load_tile (info, buffer, &rect))
fail = TRUE;
break;
case COMPRESS_RLE:
if (!xcf_load_tile_rle (info, tile, offset2 - offset))
if (!xcf_load_tile_rle (info, buffer, &rect, offset2 - offset))
fail = TRUE;
break;
case COMPRESS_ZLIB:
@ -1467,30 +1473,7 @@ xcf_load_level (XcfInfo *info,
}
if (fail)
{
tile_release (tile, TRUE);
return FALSE;
}
/* To potentially save memory, we compare the
* newly-fetched tile against the last one, and
* if they're the same we copy-on-write mirror one against
* the other.
*/
if (previous != NULL)
{
tile_lock (previous);
if (tile_ewidth (tile) == tile_ewidth (previous) &&
tile_eheight (tile) == tile_eheight (previous) &&
tile_bpp (tile) == tile_bpp (previous) &&
memcmp (tile_data_pointer (tile, 0, 0),
tile_data_pointer (previous, 0, 0),
tile_size (tile)) == 0)
tile_manager_map (tiles, i, previous);
tile_release (previous, FALSE);
}
tile_release (tile, TRUE);
previous = tile_manager_get (tiles, i, FALSE, FALSE);
/* restore the saved position so we'll be ready to
* read the next offset.
@ -1514,28 +1497,37 @@ xcf_load_level (XcfInfo *info,
static gboolean
xcf_load_tile (XcfInfo *info,
Tile *tile)
GeglBuffer *buffer,
GeglRectangle *tile_rect)
{
info->cp += xcf_read_int8 (info->fp, tile_data_pointer (tile, 0, 0),
tile_size (tile));
const Babl *format = gegl_buffer_get_format (buffer);
gint bpp = babl_format_get_bytes_per_pixel (format);
gint tile_size = bpp * tile_rect->width * tile_rect->height;
guchar *tile_data = g_alloca (tile_size);
info->cp += xcf_read_int8 (info->fp, tile_data, tile_size);
gegl_buffer_set (buffer, tile_rect, 0, NULL, tile_data,
GEGL_AUTO_ROWSTRIDE);
return TRUE;
}
static gboolean
xcf_load_tile_rle (XcfInfo *info,
Tile *tile,
int data_length)
GeglBuffer *buffer,
GeglRectangle *tile_rect,
gint data_length)
{
guchar *data;
guchar val;
gint size;
gint count;
gint length;
gint bpp;
gint i, j;
const Babl *format = gegl_buffer_get_format (buffer);
gint bpp = babl_format_get_bytes_per_pixel (format);
gint tile_size = bpp * tile_rect->width * tile_rect->height;
guchar *tile_data = g_alloca (tile_size);
gint i;
gint nmemb_read_successfully;
guchar *xcfdata, *xcfodata, *xcfdatalimit;
guchar *xcfdata;
guchar *xcfodata;
guchar *xcfdatalimit;
/* Workaround for bug #357809: avoid crashing on g_malloc() and skip
* this tile (return TRUE without storing data) as if it did not
@ -1546,12 +1538,11 @@ xcf_load_tile_rle (XcfInfo *info,
if (data_length <= 0)
return TRUE;
bpp = tile_bpp (tile);
xcfdata = xcfodata = g_malloc (data_length);
xcfdata = xcfodata = g_alloca (data_length);
/* we have to use fread instead of xcf_read_* because we may be
reading past the end of the file here */
* reading past the end of the file here
*/
nmemb_read_successfully = fread ((gchar *) xcfdata, sizeof (gchar),
data_length, info->fp);
info->cp += nmemb_read_successfully;
@ -1560,9 +1551,12 @@ xcf_load_tile_rle (XcfInfo *info,
for (i = 0; i < bpp; i++)
{
data = (guchar *) tile_data_pointer (tile, 0, 0) + i;
size = tile_ewidth (tile) * tile_eheight (tile);
count = 0;
guchar *data = tile_data + i;
gint size = tile_rect->width * tile_rect->height;
gint count = 0;
guchar val;
gint length;
gint j;
while (size > 0)
{
@ -1644,12 +1638,13 @@ xcf_load_tile_rle (XcfInfo *info,
}
}
}
g_free (xcfodata);
gegl_buffer_set (buffer, tile_rect, 0, NULL, tile_data,
GEGL_AUTO_ROWSTRIDE);
return TRUE;
bogus_rle:
if (xcfodata)
g_free (xcfodata);
return FALSE;
}

3
app/xcf/xcf-private.h
View File

@ -19,6 +19,9 @@
#define __XCF_PRIVATE_H__
#define XCF_TILE_WIDTH 64
#define XCF_TILE_HEIGHT 64
typedef enum
{
PROP_END = 0,