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path: root/gdk-pixbuf/gdk-pixbuf-data.c
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Diffstat (limited to 'gdk-pixbuf/gdk-pixbuf-data.c')
-rw-r--r--gdk-pixbuf/gdk-pixbuf-data.c251
1 files changed, 0 insertions, 251 deletions
diff --git a/gdk-pixbuf/gdk-pixbuf-data.c b/gdk-pixbuf/gdk-pixbuf-data.c
index 95903b527f..15f5aa8b82 100644
--- a/gdk-pixbuf/gdk-pixbuf-data.c
+++ b/gdk-pixbuf/gdk-pixbuf-data.c
@@ -78,254 +78,3 @@ gdk_pixbuf_new_from_data (const guchar *data, GdkColorspace colorspace, gboolean
return pixbuf;
}
-
-static guint32
-read_int (const guchar **p)
-{
- guint32 num;
-
- /* Note most significant bytes are first in the byte stream */
- num =
- (*p)[3] |
- ((*p)[2] << 8) |
- ((*p)[1] << 16) |
- ((*p)[0] << 24);
-
- *p += 4;
-
- return num;
-}
-
-static gboolean
-read_bool (const guchar **p)
-{
- gboolean val = **p != 0;
-
- ++(*p);
-
- return val;
-}
-
-static GdkPixbuf*
-read_raw_inline (const guchar *data,
- gboolean copy_pixels,
- int length,
- GError **error)
-{
- GdkPixbuf *pixbuf;
- const guchar *p = data;
- guint32 rowstride, width, height, colorspace,
- n_channels, bits_per_sample;
- gboolean has_alpha;
-
- if (length >= 0 && length < 12) {
- /* Not enough buffer to hold the width/height/rowstride */
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image data is partially missing"));
-
- return NULL;
- }
-
- rowstride = read_int (&p);
- width = read_int (&p);
- height = read_int (&p);
-
- if (rowstride < width) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image has an incorrect pixel rowstride, perhaps the data was corrupted somehow."));
- return NULL; /* bad data from untrusted source. */
- }
-
- /* rowstride >= width, so we can trust width */
-
- length -= 12;
-
- /* There's some better way like G_MAXINT/height > rowstride
- * but I'm not sure it works, so stick to this for now.
- */
- if (((double)height) * ((double)rowstride) > (double)G_MAXINT) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image size is impossibly large, perhaps the data was corrupted somehow"));
-
- return NULL; /* overflow */
- }
-
- if (length >= 0 &&
- length < (height * rowstride + 13)) {
- /* Not enough buffer to hold the remaining header
- * information plus the data.
- */
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image data is partially missing, probably it was corrupted somehow."));
-
- return NULL;
- }
-
- /* Read the remaining 13 bytes of header information */
-
- has_alpha = read_bool (&p) != FALSE;
- colorspace = read_int (&p);
- n_channels = read_int (&p);
- bits_per_sample = read_int (&p);
-
- if (colorspace != GDK_COLORSPACE_RGB) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image has an unknown colorspace code (%d), perhaps the image data was corrupted"),
- colorspace);
- return NULL;
- }
-
- if (bits_per_sample != 8) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image has an improper number of bits per sample (%d), perhaps the image data was corrupted"),
- bits_per_sample);
- return NULL;
- }
-
- if (has_alpha && n_channels != 4) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image has an improper number of channels (%d), perhaps the image data was corrupted"),
- n_channels);
- return NULL;
- }
-
- if (!has_alpha && n_channels != 3) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image has an improper number of channels (%d), perhaps the image data was corrupted"),
- n_channels);
- return NULL;
- }
-
- if (copy_pixels) {
- guchar *pixels;
- gint dest_rowstride;
- gint row;
-
- pixbuf = gdk_pixbuf_new (colorspace,
- has_alpha, bits_per_sample,
- width, height);
-
- if (pixbuf == NULL) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
- _("Not enough memory to store a %d by %d image; try exiting some applications to free memory."),
- width, height);
- return NULL;
- }
-
- pixels = gdk_pixbuf_get_pixels (pixbuf);
- dest_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
-
- for (row = 0; row < height; row++) {
- memcpy (pixels, p, rowstride);
- pixels += dest_rowstride;
- p += rowstride;
- }
- } else {
- pixbuf = gdk_pixbuf_new_from_data (p,
- colorspace,
- has_alpha,
- bits_per_sample,
- width, height,
- rowstride,
- NULL, NULL);
- }
-
- return pixbuf;
-}
-
-/**
- * gdk_pixbuf_new_from_inline:
- * @inline_pixbuf: An inlined GdkPixbuf
- * @copy_pixels: whether to copy the pixels out of the inline data, or to use them in-place
- * @length: length of the inline data
- * @error: return location for error
- *
- * Create a #GdkPixbuf from a custom format invented to store pixbuf
- * data in C program code. This library comes with a program called
- * "make-inline-pixbuf" that can write out a variable definition
- * containing an inlined pixbuf. This is useful if you want to ship a
- * program with images, but don't want to depend on any external
- * files.
- *
- * The inline data format contains the pixels in #GdkPixbuf's native
- * format. Since the inline pixbuf is read-only static data, you
- * don't need to copy it unless you intend to write to it.
- *
- * If you create a pixbuf from const inline data compiled into your
- * program, it's probably safe to ignore errors, since things will
- * always succeed. 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 error is set.
- **/
-GdkPixbuf*
-gdk_pixbuf_new_from_inline (const guchar *inline_pixbuf,
- gboolean copy_pixels,
- int length,
- GError **error)
-{
- const guchar *p;
- GdkPixbuf *pixbuf;
- GdkPixbufInlineFormat format;
-
- if (length >= 0 && length < 8) {
- /* not enough bytes to contain even the magic number
- * and format code.
- */
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image contained no data."));
- return NULL;
- }
-
- p = inline_pixbuf;
-
- if (read_int (&p) != GDK_PIXBUF_INLINE_MAGIC_NUMBER) {
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_CORRUPT_IMAGE,
- _("Image isn't in the correct format (inline GdkPixbuf format)"));
- return NULL;
- }
-
- format = read_int (&p);
-
- switch (format)
- {
- case GDK_PIXBUF_INLINE_RAW:
- pixbuf = read_raw_inline (p, copy_pixels, length - 8, error);
- break;
-
- default:
- g_set_error (error,
- GDK_PIXBUF_ERROR,
- GDK_PIXBUF_ERROR_UNKNOWN_TYPE,
- _("This version of the software is unable to read images with type code %d"),
- format);
- return NULL;
- }
-
- return pixbuf;
-}
-
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