de3cc27706
Use g_*gettext functions in gdk-pixbuf instead direct gettext calls to benefit from the maybe-dont-translate functionality in GLib. Also, replace a hand-rolled version by g_dpgettext2 in gtkbuilderparser.c. Fixes bug 585791.
904 lines
30 KiB
C
904 lines
30 KiB
C
/* GdkPixbuf library - GdkPixdata - functions for inlined pixbuf handling
|
|
* Copyright (C) 1999, 2001 Tim Janik
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
#include "config.h"
|
|
|
|
#include "gdk-pixbuf-private.h"
|
|
#include "gdk-pixdata.h"
|
|
#include "gdk-pixbuf-alias.h"
|
|
#include <string.h>
|
|
|
|
#define APPEND g_string_append_printf
|
|
|
|
/* --- functions --- */
|
|
static guint
|
|
pixdata_get_length (const GdkPixdata *pixdata)
|
|
{
|
|
guint bpp, length;
|
|
|
|
if ((pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB)
|
|
bpp = 3;
|
|
else if ((pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGBA)
|
|
bpp = 4;
|
|
else
|
|
return 0; /* invalid format */
|
|
switch (pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK)
|
|
{
|
|
guint8 *rle_buffer;
|
|
guint max_length;
|
|
case GDK_PIXDATA_ENCODING_RAW:
|
|
length = pixdata->rowstride * pixdata->height;
|
|
break;
|
|
case GDK_PIXDATA_ENCODING_RLE:
|
|
/* need an RLE walk to determine size */
|
|
max_length = pixdata->rowstride * pixdata->height;
|
|
rle_buffer = pixdata->pixel_data;
|
|
length = 0;
|
|
while (length < max_length)
|
|
{
|
|
guint chunk_length = *(rle_buffer++);
|
|
|
|
if (chunk_length & 128)
|
|
{
|
|
chunk_length = chunk_length - 128;
|
|
if (!chunk_length) /* RLE data corrupted */
|
|
return 0;
|
|
length += chunk_length * bpp;
|
|
rle_buffer += bpp;
|
|
}
|
|
else
|
|
{
|
|
if (!chunk_length) /* RLE data corrupted */
|
|
return 0;
|
|
chunk_length *= bpp;
|
|
length += chunk_length;
|
|
rle_buffer += chunk_length;
|
|
}
|
|
}
|
|
length = rle_buffer - pixdata->pixel_data;
|
|
break;
|
|
default:
|
|
length = 0;
|
|
break;
|
|
}
|
|
return length;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixdata_serialize:
|
|
* @pixdata: a valid #GdkPixdata structure to serialize.
|
|
* @stream_length_p: location to store the resulting stream length in.
|
|
*
|
|
* Serializes a #GdkPixdata structure into a byte stream.
|
|
* The byte stream consists of a straightforward writeout of the
|
|
* #GdkPixdata fields in network byte order, plus the @pixel_data
|
|
* bytes the structure points to.
|
|
*
|
|
* Return value: A newly-allocated string containing the serialized
|
|
* #GdkPixdata structure.
|
|
**/
|
|
guint8* /* free result */
|
|
gdk_pixdata_serialize (const GdkPixdata *pixdata,
|
|
guint *stream_length_p)
|
|
{
|
|
guint8 *stream, *s;
|
|
guint32 *istream;
|
|
guint length;
|
|
|
|
/* check args passing */
|
|
g_return_val_if_fail (pixdata != NULL, NULL);
|
|
g_return_val_if_fail (stream_length_p != NULL, NULL);
|
|
/* check pixdata contents */
|
|
g_return_val_if_fail (pixdata->magic == GDK_PIXBUF_MAGIC_NUMBER, NULL);
|
|
g_return_val_if_fail (pixdata->width > 0, NULL);
|
|
g_return_val_if_fail (pixdata->height > 0, NULL);
|
|
g_return_val_if_fail (pixdata->rowstride >= pixdata->width, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGBA, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_SAMPLE_WIDTH_MASK) == GDK_PIXDATA_SAMPLE_WIDTH_8, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RAW ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RLE, NULL);
|
|
g_return_val_if_fail (pixdata->pixel_data != NULL, NULL);
|
|
|
|
length = pixdata_get_length (pixdata);
|
|
|
|
/* check length field */
|
|
g_return_val_if_fail (length != 0, NULL);
|
|
|
|
stream = g_malloc (GDK_PIXDATA_HEADER_LENGTH + length);
|
|
istream = (guint32*) stream;
|
|
|
|
/* store header */
|
|
*istream++ = g_htonl (GDK_PIXBUF_MAGIC_NUMBER);
|
|
*istream++ = g_htonl (GDK_PIXDATA_HEADER_LENGTH + length);
|
|
*istream++ = g_htonl (pixdata->pixdata_type);
|
|
*istream++ = g_htonl (pixdata->rowstride);
|
|
*istream++ = g_htonl (pixdata->width);
|
|
*istream++ = g_htonl (pixdata->height);
|
|
|
|
/* copy pixel data */
|
|
s = (guint8*) istream;
|
|
memcpy (s, pixdata->pixel_data, length);
|
|
s += length;
|
|
|
|
*stream_length_p = GDK_PIXDATA_HEADER_LENGTH + length;
|
|
g_assert (s - stream == *stream_length_p); /* paranoid */
|
|
|
|
return stream;
|
|
}
|
|
|
|
#define return_header_corrupt(error) { \
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, \
|
|
GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Image header corrupt")); \
|
|
return FALSE; \
|
|
}
|
|
#define return_invalid_format(error) { \
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, \
|
|
GDK_PIXBUF_ERROR_UNKNOWN_TYPE, _("Image format unknown")); \
|
|
return FALSE; \
|
|
}
|
|
#define return_pixel_corrupt(error) { \
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR, \
|
|
GDK_PIXBUF_ERROR_CORRUPT_IMAGE, _("Image pixel data corrupt")); \
|
|
return FALSE; \
|
|
}
|
|
|
|
static inline const guint8 *
|
|
get_uint32 (const guint8 *stream, guint *result)
|
|
{
|
|
*result = (stream[0] << 24) + (stream[1] << 16) + (stream[2] << 8) + stream[3];
|
|
return stream + 4;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixdata_deserialize:
|
|
* @pixdata: a #GdkPixdata structure to be filled in.
|
|
* @stream_length: length of the stream used for deserialization.
|
|
* @stream: stream of bytes containing a serialized #GdkPixdata structure.
|
|
* @error: #GError location to indicate failures (maybe %NULL to ignore errors).
|
|
*
|
|
* Deserializes (reconstruct) a #GdkPixdata structure from a byte stream.
|
|
* The byte stream consists of a straightforward writeout of the
|
|
* #GdkPixdata fields in network byte order, plus the @pixel_data
|
|
* bytes the structure points to.
|
|
* The @pixdata contents are reconstructed byte by byte and are checked
|
|
* for validity. This function may fail with %GDK_PIXBUF_CORRUPT_IMAGE
|
|
* or %GDK_PIXBUF_ERROR_UNKNOWN_TYPE.
|
|
*
|
|
* Return value: Upon successful deserialization %TRUE is returned,
|
|
* %FALSE otherwise.
|
|
**/
|
|
gboolean
|
|
gdk_pixdata_deserialize (GdkPixdata *pixdata,
|
|
guint stream_length,
|
|
const guint8 *stream,
|
|
GError **error)
|
|
{
|
|
guint color_type, sample_width, encoding;
|
|
|
|
g_return_val_if_fail (pixdata != NULL, FALSE);
|
|
if (stream_length < GDK_PIXDATA_HEADER_LENGTH)
|
|
return_header_corrupt (error);
|
|
g_return_val_if_fail (stream != NULL, FALSE);
|
|
|
|
|
|
/* deserialize header */
|
|
stream = get_uint32 (stream, &pixdata->magic);
|
|
stream = get_uint32 (stream, (guint32 *)&pixdata->length);
|
|
if (pixdata->magic != GDK_PIXBUF_MAGIC_NUMBER || pixdata->length < GDK_PIXDATA_HEADER_LENGTH)
|
|
return_header_corrupt (error);
|
|
stream = get_uint32 (stream, &pixdata->pixdata_type);
|
|
stream = get_uint32 (stream, &pixdata->rowstride);
|
|
stream = get_uint32 (stream, &pixdata->width);
|
|
stream = get_uint32 (stream, &pixdata->height);
|
|
if (pixdata->width < 1 || pixdata->height < 1 ||
|
|
pixdata->rowstride < pixdata->width)
|
|
return_header_corrupt (error);
|
|
color_type = pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK;
|
|
sample_width = pixdata->pixdata_type & GDK_PIXDATA_SAMPLE_WIDTH_MASK;
|
|
encoding = pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK;
|
|
if ((color_type != GDK_PIXDATA_COLOR_TYPE_RGB &&
|
|
color_type != GDK_PIXDATA_COLOR_TYPE_RGBA) ||
|
|
sample_width != GDK_PIXDATA_SAMPLE_WIDTH_8 ||
|
|
(encoding != GDK_PIXDATA_ENCODING_RAW &&
|
|
encoding != GDK_PIXDATA_ENCODING_RLE))
|
|
return_invalid_format (error);
|
|
|
|
/* deserialize pixel data */
|
|
if (stream_length < pixdata->length - GDK_PIXDATA_HEADER_LENGTH)
|
|
return_pixel_corrupt (error);
|
|
pixdata->pixel_data = (guint8 *)stream;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
diff2_rgb (guint8 *ip)
|
|
{
|
|
return ip[0] != ip[3] || ip[1] != ip[4] || ip[2] != ip[5];
|
|
}
|
|
|
|
static gboolean
|
|
diff2_rgba (guint8 *ip)
|
|
{
|
|
return ip[0] != ip[4] || ip[1] != ip[5] || ip[2] != ip[6] || ip[3] != ip[7];
|
|
}
|
|
|
|
static guint8* /* dest buffer bound */
|
|
rl_encode_rgbx (guint8 *bp, /* dest buffer */
|
|
guint8 *ip, /* image pointer */
|
|
guint8 *limit, /* image upper bound */
|
|
guint n_ch)
|
|
{
|
|
gboolean (*diff2_pix) (guint8 *) = n_ch > 3 ? diff2_rgba : diff2_rgb;
|
|
guint8 *ilimit = limit - n_ch;
|
|
|
|
while (ip < limit)
|
|
{
|
|
g_assert (ip < ilimit); /* paranoid */
|
|
|
|
if (diff2_pix (ip))
|
|
{
|
|
guint8 *s_ip = ip;
|
|
guint l = 1;
|
|
|
|
ip += n_ch;
|
|
while (l < 127 && ip < ilimit && diff2_pix (ip))
|
|
{ ip += n_ch; l += 1; }
|
|
if (ip == ilimit && l < 127)
|
|
{ ip += n_ch; l += 1; }
|
|
*(bp++) = l;
|
|
memcpy (bp, s_ip, l * n_ch);
|
|
bp += l * n_ch;
|
|
}
|
|
else
|
|
{
|
|
guint l = 2;
|
|
|
|
ip += n_ch;
|
|
while (l < 127 && ip < ilimit && !diff2_pix (ip))
|
|
{ ip += n_ch; l += 1; }
|
|
*(bp++) = l | 128;
|
|
memcpy (bp, ip, n_ch);
|
|
ip += n_ch;
|
|
bp += n_ch;
|
|
}
|
|
if (ip == ilimit)
|
|
{
|
|
*(bp++) = 1;
|
|
memcpy (bp, ip, n_ch);
|
|
ip += n_ch;
|
|
bp += n_ch;
|
|
}
|
|
}
|
|
|
|
return bp;
|
|
}
|
|
|
|
/* Used as the destroy notification function for gdk_pixbuf_new() */
|
|
static void
|
|
free_buffer (guchar *pixels, gpointer data)
|
|
{
|
|
g_free (pixels);
|
|
}
|
|
|
|
/**
|
|
* gdk_pixdata_from_pixbuf:
|
|
* @pixdata: a #GdkPixdata to fill.
|
|
* @pixbuf: the data to fill @pixdata with.
|
|
* @use_rle: whether to use run-length encoding for the pixel data.
|
|
*
|
|
* Converts a #GdkPixbuf to a #GdkPixdata. If @use_rle is %TRUE, the
|
|
* pixel data is run-length encoded into newly-allocated memory and a
|
|
* pointer to that memory is returned.
|
|
*
|
|
* Returns: If @ure_rle is %TRUE, a pointer to the newly-allocated memory
|
|
* for the run-length encoded pixel data, otherwise %NULL.
|
|
**/
|
|
gpointer
|
|
gdk_pixdata_from_pixbuf (GdkPixdata *pixdata,
|
|
const GdkPixbuf *pixbuf,
|
|
gboolean use_rle)
|
|
{
|
|
gpointer free_me = NULL;
|
|
guint height, rowstride, encoding, bpp, length;
|
|
guint8 *img_buffer;
|
|
|
|
g_return_val_if_fail (pixdata != NULL, NULL);
|
|
g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
|
|
g_return_val_if_fail (pixbuf->bits_per_sample == 8, NULL);
|
|
g_return_val_if_fail ((pixbuf->n_channels == 3 && !pixbuf->has_alpha) ||
|
|
(pixbuf->n_channels == 4 && pixbuf->has_alpha), NULL);
|
|
g_return_val_if_fail (pixbuf->rowstride >= pixbuf->width, NULL);
|
|
|
|
height = pixbuf->height;
|
|
rowstride = pixbuf->rowstride;
|
|
bpp = pixbuf->has_alpha ? 4 : 3;
|
|
encoding = use_rle && ((rowstride / bpp | height) > 1) ? GDK_PIXDATA_ENCODING_RLE : GDK_PIXDATA_ENCODING_RAW;
|
|
|
|
if (encoding == GDK_PIXDATA_ENCODING_RLE)
|
|
{
|
|
guint pad, n_bytes = rowstride * height;
|
|
guint8 *img_buffer_end, *data;
|
|
GdkPixbuf *buf = NULL;
|
|
|
|
if (n_bytes % bpp != 0)
|
|
{
|
|
rowstride = pixbuf->width * bpp;
|
|
n_bytes = rowstride * height;
|
|
data = g_malloc (n_bytes);
|
|
buf = gdk_pixbuf_new_from_data (data,
|
|
GDK_COLORSPACE_RGB,
|
|
pixbuf->has_alpha, 8,
|
|
pixbuf->width,
|
|
pixbuf->height,
|
|
rowstride,
|
|
free_buffer, NULL);
|
|
gdk_pixbuf_copy_area (pixbuf, 0, 0, pixbuf->width, pixbuf->height,
|
|
buf, 0, 0);
|
|
}
|
|
else
|
|
buf = (GdkPixbuf *)pixbuf;
|
|
pad = rowstride;
|
|
pad = MAX (pad, 130 + n_bytes / 127);
|
|
data = g_new (guint8, pad + n_bytes);
|
|
free_me = data;
|
|
img_buffer = data;
|
|
img_buffer_end = rl_encode_rgbx (img_buffer,
|
|
buf->pixels, buf->pixels + n_bytes,
|
|
bpp);
|
|
length = img_buffer_end - img_buffer;
|
|
if (buf != pixbuf)
|
|
g_object_unref (buf);
|
|
}
|
|
else
|
|
{
|
|
img_buffer = pixbuf->pixels;
|
|
length = rowstride * height;
|
|
}
|
|
|
|
pixdata->magic = GDK_PIXBUF_MAGIC_NUMBER;
|
|
pixdata->length = GDK_PIXDATA_HEADER_LENGTH + length;
|
|
pixdata->pixdata_type = pixbuf->has_alpha ? GDK_PIXDATA_COLOR_TYPE_RGBA : GDK_PIXDATA_COLOR_TYPE_RGB;
|
|
pixdata->pixdata_type |= GDK_PIXDATA_SAMPLE_WIDTH_8;
|
|
pixdata->pixdata_type |= encoding;
|
|
pixdata->rowstride = rowstride;
|
|
pixdata->width = pixbuf->width;
|
|
pixdata->height = height;
|
|
pixdata->pixel_data = img_buffer;
|
|
|
|
return free_me;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_from_pixdata:
|
|
* @pixdata: a #GdkPixdata to convert into a #GdkPixbuf.
|
|
* @copy_pixels: whether to copy raw pixel data; run-length encoded
|
|
* pixel data is always copied.
|
|
* @error: location to store possible errors.
|
|
*
|
|
* Converts a #GdkPixdata to a #GdkPixbuf. If @copy_pixels is %TRUE or
|
|
* if the pixel data is run-length-encoded, the pixel data is copied into
|
|
* newly-allocated memory; otherwise it is reused.
|
|
*
|
|
* Returns: a new #GdkPixbuf.
|
|
**/
|
|
GdkPixbuf*
|
|
gdk_pixbuf_from_pixdata (const GdkPixdata *pixdata,
|
|
gboolean copy_pixels,
|
|
GError **error)
|
|
{
|
|
guint encoding, bpp;
|
|
guint8 *data = NULL;
|
|
|
|
g_return_val_if_fail (pixdata != NULL, NULL);
|
|
g_return_val_if_fail (pixdata->width > 0, NULL);
|
|
g_return_val_if_fail (pixdata->height > 0, NULL);
|
|
g_return_val_if_fail (pixdata->rowstride >= pixdata->width, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGBA, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_SAMPLE_WIDTH_MASK) == GDK_PIXDATA_SAMPLE_WIDTH_8, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RAW ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RLE, NULL);
|
|
g_return_val_if_fail (pixdata->pixel_data != NULL, NULL);
|
|
|
|
bpp = (pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB ? 3 : 4;
|
|
encoding = pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK;
|
|
if (encoding == GDK_PIXDATA_ENCODING_RLE)
|
|
copy_pixels = TRUE;
|
|
if (copy_pixels)
|
|
{
|
|
data = g_try_malloc (pixdata->rowstride * pixdata->height);
|
|
if (!data)
|
|
{
|
|
g_set_error (error, GDK_PIXBUF_ERROR,
|
|
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
|
|
g_dngettext(GETTEXT_PACKAGE,
|
|
"failed to allocate image buffer of %u byte",
|
|
"failed to allocate image buffer of %u bytes",
|
|
pixdata->rowstride * pixdata->height),
|
|
pixdata->rowstride * pixdata->height);
|
|
return NULL;
|
|
}
|
|
}
|
|
if (encoding == GDK_PIXDATA_ENCODING_RLE)
|
|
{
|
|
const guint8 *rle_buffer = pixdata->pixel_data;
|
|
guint8 *image_buffer = data;
|
|
guint8 *image_limit = data + pixdata->rowstride * pixdata->height;
|
|
gboolean check_overrun = FALSE;
|
|
|
|
while (image_buffer < image_limit)
|
|
{
|
|
guint length = *(rle_buffer++);
|
|
|
|
if (length & 128)
|
|
{
|
|
length = length - 128;
|
|
check_overrun = image_buffer + length * bpp > image_limit;
|
|
if (check_overrun)
|
|
length = (image_limit - image_buffer) / bpp;
|
|
if (bpp < 4) /* RGB */
|
|
do
|
|
{
|
|
memcpy (image_buffer, rle_buffer, 3);
|
|
image_buffer += 3;
|
|
}
|
|
while (--length);
|
|
else /* RGBA */
|
|
do
|
|
{
|
|
memcpy (image_buffer, rle_buffer, 4);
|
|
image_buffer += 4;
|
|
}
|
|
while (--length);
|
|
rle_buffer += bpp;
|
|
}
|
|
else
|
|
{
|
|
length *= bpp;
|
|
check_overrun = image_buffer + length > image_limit;
|
|
if (check_overrun)
|
|
length = image_limit - image_buffer;
|
|
memcpy (image_buffer, rle_buffer, length);
|
|
image_buffer += length;
|
|
rle_buffer += length;
|
|
}
|
|
}
|
|
if (check_overrun)
|
|
{
|
|
g_free (data);
|
|
g_set_error_literal (error, GDK_PIXBUF_ERROR,
|
|
GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
|
|
_("Image pixel data corrupt"));
|
|
return NULL;
|
|
}
|
|
}
|
|
else if (copy_pixels)
|
|
memcpy (data, pixdata->pixel_data, pixdata->rowstride * pixdata->height);
|
|
else
|
|
data = pixdata->pixel_data;
|
|
|
|
return gdk_pixbuf_new_from_data (data, GDK_COLORSPACE_RGB,
|
|
(pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGBA,
|
|
8, pixdata->width, pixdata->height, pixdata->rowstride,
|
|
copy_pixels ? (GdkPixbufDestroyNotify) g_free : NULL, data);
|
|
}
|
|
|
|
typedef struct {
|
|
/* config */
|
|
gboolean dump_stream;
|
|
gboolean dump_struct;
|
|
gboolean dump_macros;
|
|
gboolean dump_gtypes;
|
|
gboolean dump_rle_decoder;
|
|
const gchar *static_prefix;
|
|
const gchar *const_prefix;
|
|
/* runtime */
|
|
GString *gstring;
|
|
guint pos;
|
|
gboolean pad;
|
|
} CSourceData;
|
|
|
|
static inline void
|
|
save_uchar (CSourceData *cdata,
|
|
guint8 d)
|
|
{
|
|
GString *gstring = cdata->gstring;
|
|
|
|
if (cdata->pos > 70)
|
|
{
|
|
if (cdata->dump_struct || cdata->dump_stream)
|
|
{
|
|
g_string_append (gstring, "\"\n \"");
|
|
cdata->pos = 3;
|
|
cdata->pad = FALSE;
|
|
}
|
|
if (cdata->dump_macros)
|
|
{
|
|
g_string_append (gstring, "\" \\\n \"");
|
|
cdata->pos = 3;
|
|
cdata->pad = FALSE;
|
|
}
|
|
}
|
|
if (d < 33 || d > 126 || d == '?')
|
|
{
|
|
APPEND (gstring, "\\%o", d);
|
|
cdata->pos += 1 + 1 + (d > 7) + (d > 63);
|
|
cdata->pad = d < 64;
|
|
return;
|
|
}
|
|
if (d == '\\')
|
|
{
|
|
g_string_append (gstring, "\\\\");
|
|
cdata->pos += 2;
|
|
}
|
|
else if (d == '"')
|
|
{
|
|
g_string_append (gstring, "\\\"");
|
|
cdata->pos += 2;
|
|
}
|
|
else if (cdata->pad && d >= '0' && d <= '9')
|
|
{
|
|
g_string_append (gstring, "\"\"");
|
|
g_string_append_c (gstring, d);
|
|
cdata->pos += 3;
|
|
}
|
|
else
|
|
{
|
|
g_string_append_c (gstring, d);
|
|
cdata->pos += 1;
|
|
}
|
|
cdata->pad = FALSE;
|
|
return;
|
|
}
|
|
|
|
static inline void
|
|
save_rle_decoder (GString *gstring,
|
|
const gchar *macro_name,
|
|
const gchar *s_uint,
|
|
const gchar *s_uint_8,
|
|
guint n_ch)
|
|
{
|
|
APPEND (gstring, "#define %s_RUN_LENGTH_DECODE(image_buf, rle_data, size, bpp) do \\\n",
|
|
macro_name);
|
|
APPEND (gstring, "{ %s __bpp; %s *__ip; const %s *__il, *__rd; \\\n", s_uint, s_uint_8, s_uint_8);
|
|
APPEND (gstring, " __bpp = (bpp); __ip = (image_buf); __il = __ip + (size) * __bpp; \\\n");
|
|
|
|
APPEND (gstring, " __rd = (rle_data); if (__bpp > 3) { /* RGBA */ \\\n");
|
|
|
|
APPEND (gstring, " while (__ip < __il) { %s __l = *(__rd++); \\\n", s_uint);
|
|
APPEND (gstring, " if (__l & 128) { __l = __l - 128; \\\n");
|
|
APPEND (gstring, " do { memcpy (__ip, __rd, 4); __ip += 4; } while (--__l); __rd += 4; \\\n");
|
|
APPEND (gstring, " } else { __l *= 4; memcpy (__ip, __rd, __l); \\\n");
|
|
APPEND (gstring, " __ip += __l; __rd += __l; } } \\\n");
|
|
|
|
APPEND (gstring, " } else { /* RGB */ \\\n");
|
|
|
|
APPEND (gstring, " while (__ip < __il) { %s __l = *(__rd++); \\\n", s_uint);
|
|
APPEND (gstring, " if (__l & 128) { __l = __l - 128; \\\n");
|
|
APPEND (gstring, " do { memcpy (__ip, __rd, 3); __ip += 3; } while (--__l); __rd += 3; \\\n");
|
|
APPEND (gstring, " } else { __l *= 3; memcpy (__ip, __rd, __l); \\\n");
|
|
APPEND (gstring, " __ip += __l; __rd += __l; } } \\\n");
|
|
|
|
APPEND (gstring, " } } while (0)\n");
|
|
}
|
|
|
|
/**
|
|
* gdk_pixdata_to_csource:
|
|
* @pixdata: a #GdkPixdata to convert to C source.
|
|
* @name: used for naming generated data structures or macros.
|
|
* @dump_type: a #GdkPixdataDumpType determining the kind of C
|
|
* source to be generated.
|
|
*
|
|
* Generates C source code suitable for compiling images directly
|
|
* into programs.
|
|
*
|
|
* GTK+ ships with a program called <command>gdk-pixbuf-csource</command>
|
|
* which offers a command line interface to this function.
|
|
*
|
|
* Returns: a newly-allocated string containing the C source form
|
|
* of @pixdata.
|
|
**/
|
|
GString*
|
|
gdk_pixdata_to_csource (GdkPixdata *pixdata,
|
|
const gchar *name,
|
|
GdkPixdataDumpType dump_type)
|
|
{
|
|
CSourceData cdata = { 0, };
|
|
gchar *s_uint_8;
|
|
guint bpp, width, height, rowstride;
|
|
gboolean rle_encoded;
|
|
gchar *macro_name;
|
|
guint8 *img_buffer, *img_buffer_end, *stream = NULL;
|
|
guint stream_length;
|
|
GString *gstring;
|
|
|
|
/* check args passing */
|
|
g_return_val_if_fail (pixdata != NULL, NULL);
|
|
g_return_val_if_fail (name != NULL, NULL);
|
|
/* check pixdata contents */
|
|
g_return_val_if_fail (pixdata->magic == GDK_PIXBUF_MAGIC_NUMBER, NULL);
|
|
g_return_val_if_fail (pixdata->width > 0, NULL);
|
|
g_return_val_if_fail (pixdata->height > 0, NULL);
|
|
g_return_val_if_fail (pixdata->rowstride >= pixdata->width, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGBA, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_SAMPLE_WIDTH_MASK) == GDK_PIXDATA_SAMPLE_WIDTH_8, NULL);
|
|
g_return_val_if_fail ((pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RAW ||
|
|
(pixdata->pixdata_type & GDK_PIXDATA_ENCODING_MASK) == GDK_PIXDATA_ENCODING_RLE, NULL);
|
|
g_return_val_if_fail (pixdata->pixel_data != NULL, NULL);
|
|
|
|
img_buffer = pixdata->pixel_data;
|
|
if (pixdata->length < 1)
|
|
img_buffer_end = img_buffer + pixdata_get_length (pixdata);
|
|
else
|
|
img_buffer_end = img_buffer + pixdata->length - GDK_PIXDATA_HEADER_LENGTH;
|
|
g_return_val_if_fail (img_buffer < img_buffer_end, NULL);
|
|
|
|
bpp = (pixdata->pixdata_type & GDK_PIXDATA_COLOR_TYPE_MASK) == GDK_PIXDATA_COLOR_TYPE_RGB ? 3 : 4;
|
|
width = pixdata->width;
|
|
height = pixdata->height;
|
|
rowstride = pixdata->rowstride;
|
|
rle_encoded = (pixdata->pixdata_type & GDK_PIXDATA_ENCODING_RLE) > 0;
|
|
macro_name = g_ascii_strup (name, -1);
|
|
|
|
cdata.dump_macros = (dump_type & GDK_PIXDATA_DUMP_MACROS) > 0;
|
|
cdata.dump_struct = (dump_type & GDK_PIXDATA_DUMP_PIXDATA_STRUCT) > 0;
|
|
cdata.dump_stream = !cdata.dump_macros && !cdata.dump_struct;
|
|
g_return_val_if_fail (cdata.dump_macros + cdata.dump_struct + cdata.dump_stream == 1, NULL);
|
|
|
|
cdata.dump_gtypes = (dump_type & GDK_PIXDATA_DUMP_CTYPES) == 0;
|
|
cdata.dump_rle_decoder = (dump_type & GDK_PIXDATA_DUMP_RLE_DECODER) > 0;
|
|
cdata.static_prefix = (dump_type & GDK_PIXDATA_DUMP_STATIC) ? "static " : "";
|
|
cdata.const_prefix = (dump_type & GDK_PIXDATA_DUMP_CONST) ? "const " : "";
|
|
gstring = g_string_new (NULL);
|
|
cdata.gstring = gstring;
|
|
|
|
if (!cdata.dump_macros && cdata.dump_gtypes)
|
|
s_uint_8 = "guint8 ";
|
|
else if (!cdata.dump_macros)
|
|
s_uint_8 = "unsigned char";
|
|
else if (cdata.dump_macros && cdata.dump_gtypes)
|
|
s_uint_8 = "guint8";
|
|
else /* cdata.dump_macros && !cdata.dump_gtypes */
|
|
s_uint_8 = "unsigned char";
|
|
|
|
/* initial comment
|
|
*/
|
|
APPEND (gstring,
|
|
"/* GdkPixbuf %s C-Source image dump %s*/\n\n",
|
|
bpp > 3 ? "RGBA" : "RGB",
|
|
rle_encoded ? "1-byte-run-length-encoded " : "");
|
|
|
|
/* dump RLE decoder for structures
|
|
*/
|
|
if (cdata.dump_rle_decoder && cdata.dump_struct)
|
|
save_rle_decoder (gstring,
|
|
macro_name,
|
|
cdata.dump_gtypes ? "guint" : "unsigned int",
|
|
cdata.dump_gtypes ? "guint8" : "unsigned char",
|
|
bpp);
|
|
|
|
/* format & size blurbs
|
|
*/
|
|
if (cdata.dump_macros)
|
|
{
|
|
APPEND (gstring, "#define %s_ROWSTRIDE (%u)\n",
|
|
macro_name, rowstride);
|
|
APPEND (gstring, "#define %s_WIDTH (%u)\n",
|
|
macro_name, width);
|
|
APPEND (gstring, "#define %s_HEIGHT (%u)\n",
|
|
macro_name, height);
|
|
APPEND (gstring, "#define %s_BYTES_PER_PIXEL (%u) /* 3:RGB, 4:RGBA */\n",
|
|
macro_name, bpp);
|
|
}
|
|
if (cdata.dump_struct)
|
|
{
|
|
APPEND (gstring, "%s%sGdkPixdata %s = {\n",
|
|
cdata.static_prefix, cdata.const_prefix, name);
|
|
APPEND (gstring, " 0x%x, /* Pixbuf magic: 'GdkP' */\n",
|
|
GDK_PIXBUF_MAGIC_NUMBER);
|
|
APPEND (gstring, " %d + %lu, /* header length + pixel_data length */\n",
|
|
GDK_PIXDATA_HEADER_LENGTH,
|
|
rle_encoded ? (glong)(img_buffer_end - img_buffer) : (glong)rowstride * height);
|
|
APPEND (gstring, " 0x%x, /* pixdata_type */\n",
|
|
pixdata->pixdata_type);
|
|
APPEND (gstring, " %u, /* rowstride */\n",
|
|
rowstride);
|
|
APPEND (gstring, " %u, /* width */\n",
|
|
width);
|
|
APPEND (gstring, " %u, /* height */\n",
|
|
height);
|
|
APPEND (gstring, " /* pixel_data: */\n");
|
|
}
|
|
if (cdata.dump_stream)
|
|
{
|
|
guint pix_length = img_buffer_end - img_buffer;
|
|
|
|
stream = gdk_pixdata_serialize (pixdata, &stream_length);
|
|
img_buffer = stream;
|
|
img_buffer_end = stream + stream_length;
|
|
|
|
APPEND (gstring, "#ifdef __SUNPRO_C\n");
|
|
APPEND (gstring, "#pragma align 4 (%s)\n", name);
|
|
APPEND (gstring, "#endif\n");
|
|
|
|
APPEND (gstring, "#ifdef __GNUC__\n");
|
|
APPEND (gstring, "%s%s%s %s[] __attribute__ ((__aligned__ (4))) = \n",
|
|
cdata.static_prefix, cdata.const_prefix,
|
|
cdata.dump_gtypes ? "guint8" : "unsigned char",
|
|
name);
|
|
APPEND (gstring, "#else\n");
|
|
APPEND (gstring, "%s%s%s %s[] = \n",
|
|
cdata.static_prefix, cdata.const_prefix,
|
|
cdata.dump_gtypes ? "guint8" : "unsigned char",
|
|
name);
|
|
APPEND (gstring, "#endif\n");
|
|
|
|
APPEND (gstring, "{ \"\"\n /* Pixbuf magic (0x%x) */\n \"",
|
|
GDK_PIXBUF_MAGIC_NUMBER);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* length: header (%d) + pixel_data (%u) */\n \"",
|
|
GDK_PIXDATA_HEADER_LENGTH,
|
|
rle_encoded ? pix_length : rowstride * height);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* pixdata_type (0x%x) */\n \"",
|
|
pixdata->pixdata_type);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* rowstride (%u) */\n \"",
|
|
rowstride);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* width (%u) */\n \"", width);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* height (%u) */\n \"", height);
|
|
cdata.pos = 3;
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
save_uchar (&cdata, *img_buffer++); save_uchar (&cdata, *img_buffer++);
|
|
APPEND (gstring, "\"\n /* pixel_data: */\n");
|
|
}
|
|
|
|
/* pixel_data intro
|
|
*/
|
|
if (cdata.dump_macros)
|
|
{
|
|
APPEND (gstring, "#define %s_%sPIXEL_DATA ((%s*) \\\n",
|
|
macro_name,
|
|
rle_encoded ? "RLE_" : "",
|
|
s_uint_8);
|
|
APPEND (gstring, " \"");
|
|
cdata.pos = 2;
|
|
}
|
|
if (cdata.dump_struct)
|
|
{
|
|
APPEND (gstring, " \"");
|
|
cdata.pos = 3;
|
|
}
|
|
if (cdata.dump_stream)
|
|
{
|
|
APPEND (gstring, " \"");
|
|
cdata.pos = 3;
|
|
}
|
|
|
|
/* pixel_data
|
|
*/
|
|
do
|
|
save_uchar (&cdata, *img_buffer++);
|
|
while (img_buffer < img_buffer_end);
|
|
|
|
/* pixel_data trailer
|
|
*/
|
|
if (cdata.dump_macros)
|
|
APPEND (gstring, "\")\n\n");
|
|
if (cdata.dump_struct)
|
|
APPEND (gstring, "\",\n};\n\n");
|
|
if (cdata.dump_stream)
|
|
APPEND (gstring, "\"};\n\n");
|
|
|
|
/* dump RLE decoder for macros
|
|
*/
|
|
if (cdata.dump_rle_decoder && cdata.dump_macros)
|
|
save_rle_decoder (gstring,
|
|
macro_name,
|
|
cdata.dump_gtypes ? "guint" : "unsigned int",
|
|
cdata.dump_gtypes ? "guint8" : "unsigned char",
|
|
bpp);
|
|
|
|
/* cleanup
|
|
*/
|
|
g_free (stream);
|
|
g_free (macro_name);
|
|
|
|
return gstring;
|
|
}
|
|
|
|
/**
|
|
* gdk_pixbuf_new_from_inline:
|
|
* @data_length: Length in bytes of the @data argument or -1 to
|
|
* disable length checks
|
|
* @data: Byte data containing a serialized #GdkPixdata structure
|
|
* @copy_pixels: Whether to copy the pixel data, or use direct pointers
|
|
* @data for the resulting pixbuf
|
|
* @error: #GError return location, may be %NULL to ignore errors
|
|
*
|
|
* Create a #GdkPixbuf from a flat representation that is suitable for
|
|
* storing as inline data in a program. This is useful if you want to
|
|
* ship a program with images, but don't want to depend on any
|
|
* external files.
|
|
*
|
|
* GTK+ ships with a program called <command>gdk-pixbuf-csource</command>
|
|
* which allows for conversion of #GdkPixbufs into such a inline representation.
|
|
* In almost all cases, you should pass the <option>--raw</option> flag to
|
|
* <command>gdk-pixbuf-csource</command>. A sample invocation would be:
|
|
*
|
|
* <informalexample><programlisting>
|
|
* gdk-pixbuf-csource --raw --name=myimage_inline myimage.png
|
|
* </programlisting></informalexample>
|
|
*
|
|
* For the typical case where the inline pixbuf is read-only static data,
|
|
* you don't need to copy the pixel data unless you intend to write to
|
|
* it, so you can pass %FALSE for @copy_pixels. (If you pass
|
|
* <option>--rle</option> to <command>gdk-pixbuf-csource</command>, a copy
|
|
* will be made even if @copy_pixels is %FALSE, so using this option is
|
|
* generally a bad idea.)
|
|
*
|
|
* If you create a pixbuf from const inline data compiled into your
|
|
* program, it's probably safe to ignore errors and disable length checks,
|
|
* since things will always succeed:
|
|
* <informalexample><programlisting>
|
|
* pixbuf = gdk_pixbuf_new_from_inline (-1, myimage_inline, FALSE, NULL);
|
|
* </programlisting></informalexample>
|
|
*
|
|
* For non-const inline data, you could get out of memory. For untrusted
|
|
* inline data located at runtime, you could have corrupt inline data in
|
|
* addition.
|
|
*
|
|
* Return value: A newly-created #GdkPixbuf structure with a reference,
|
|
* count of 1, or %NULL if an error occurred.
|
|
**/
|
|
GdkPixbuf*
|
|
gdk_pixbuf_new_from_inline (gint data_length,
|
|
const guint8 *data,
|
|
gboolean copy_pixels,
|
|
GError **error)
|
|
{
|
|
GdkPixdata pixdata;
|
|
|
|
if (data_length != -1)
|
|
g_return_val_if_fail (data_length > GDK_PIXDATA_HEADER_LENGTH, NULL);
|
|
g_return_val_if_fail (data != NULL, NULL);
|
|
|
|
if (!gdk_pixdata_deserialize (&pixdata, data_length, data, error))
|
|
return NULL;
|
|
|
|
return gdk_pixbuf_from_pixdata (&pixdata, copy_pixels, error);
|
|
}
|
|
|
|
#define __GDK_PIXDATA_C__
|
|
#include "gdk-pixbuf-aliasdef.c"
|