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Add icc-profile option to gdk-pixbuf for the TIFF image format

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This commit is contained in:
Richard Hughes 2009-12-21 08:53:28 +00:00
parent 25e3329215
commit 60e0183ac9
3 changed files with 84 additions and 20 deletions
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43
demos/testpixbuf-color.c
View File

@ -35,6 +35,31 @@ out:
return ret;
}
static gboolean
save_image_tiff (const gchar *filename, GdkPixbuf *pixbuf, GError **error)
{
gchar *contents = NULL;
gchar *contents_encode = NULL;
gsize length;
gboolean ret;
gint len;
/* get icc file */
ret = g_file_get_contents (ICC_PROFILE, &contents, &length, error);
if (!ret)
goto out;
contents_encode = g_base64_encode ((const guchar *) contents, length);
ret = gdk_pixbuf_save (pixbuf, filename, "tiff", error,
"icc-profile", contents_encode,
NULL);
len = strlen (contents_encode);
g_debug ("ICC profile was %i bytes", len);
out:
g_free (contents);
g_free (contents_encode);
return ret;
}
static gboolean
save_image_verify (const gchar *filename, GError **error)
{
@ -99,6 +124,15 @@ main (int argc, char **argv)
goto out;
}
/* PASS */
g_debug ("try to save TIFF with a profile");
ret = save_image_tiff ("icc-profile.tiff", pixbuf, &error);
if (!ret) {
g_warning ("FAILED: did not save image: %s", error->message);
g_error_free (error);
goto out;
}
/* PASS */
g_debug ("try to load PNG and get color attributes");
ret = save_image_verify ("icc-profile.png", &error);
@ -108,6 +142,15 @@ main (int argc, char **argv)
goto out;
}
/* PASS */
g_debug ("try to load TIFF and get color attributes");
ret = save_image_verify ("icc-profile.tiff", &error);
if (!ret) {
g_warning ("FAILED: did not load image: %s", error->message);
g_error_free (error);
goto out;
}
/* success */
retval = 0;
g_debug ("ALL OKAY!");

2
gdk-pixbuf/gdk-pixbuf-io.c
View File

@ -1902,7 +1902,7 @@ gdk_pixbuf_real_save_to_callback (GdkPixbuf *pixbuf,
* be specified using the "compression" parameter; it's value is in an
* integer in the range of [0,9].
*
* ICC color profiles can also be embedded into PNG images.
* ICC color profiles can also be embedded into PNG and TIFF images.
* The "icc-profile" value should be the complete ICC profile encoded
* into base64.
*

59
gdk-pixbuf/io-tiff.c
View File

@ -150,6 +150,10 @@ tiff_image_parse (TIFF *tiff, TiffContext *context, GError **error)
uint16 orientation = 0;
uint16 transform = 0;
uint16 codec;
gchar *icc_profile_base64;
const gchar *icc_profile;
guint icc_profile_size;
gint retval;
/* We're called with the lock held. */
@ -274,6 +278,14 @@ tiff_image_parse (TIFF *tiff, TiffContext *context, GError **error)
gdk_pixbuf_set_option (pixbuf, "compression", str);
}
/* Extract embedded ICC profile */
retval = TIFFGetField (tiff, TIFFTAG_ICCPROFILE, &icc_profile_size, &icc_profile);
if (retval == 1) {
icc_profile_base64 = g_base64_encode ((const guchar *) icc_profile, icc_profile_size);
gdk_pixbuf_set_option (pixbuf, "icc-profile", icc_profile_base64);
g_free (icc_profile_base64);
}
if (context && context->prepare_func)
(* context->prepare_func) (pixbuf, NULL, context->user_data);
@ -662,6 +674,8 @@ gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
int y;
TiffSaveContext *context;
gboolean retval;
guchar *icc_profile = NULL;
gsize icc_profile_size = 0;
tiff_push_handlers ();
@ -710,13 +724,22 @@ gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
else {
tiff_set_error (error,
GDK_PIXBUF_ERROR_FAILED,
_("TIFF compression doesn't refer to a valid codec."));
tiff_pop_handlers ();
free_save_context (context);
return FALSE;
_("TIFF compression doesn't refer to a valid codec."));
retval = FALSE;
goto cleanup;
}
} else if (g_str_equal (keys[i], "icc-profile")) {
/* decode from base64 */
icc_profile = g_base64_decode (values[i], &icc_profile_size);
if (icc_profile_size < 127) {
g_set_error (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_BAD_OPTION,
_("Color profile has invalid length '%d'."),
icc_profile_size);
retval = FALSE;
goto cleanup;
}
}
i++;
}
@ -729,6 +752,9 @@ gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
TIFFSetField (tiff, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);
TIFFSetField (tiff, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
if (icc_profile != NULL)
TIFFSetField (tiff, TIFFTAG_ICCPROFILE, icc_profile_size, icc_profile);
for (y = 0; y < height; y++) {
if (TIFFWriteScanline (tiff, pixels + y * rowstride, y, 0) == -1 ||
global_error)
@ -741,11 +767,8 @@ gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
_("Failed to write TIFF data"));
TIFFClose (tiff);
free_save_context (context);
tiff_pop_handlers ();
return FALSE;
retval = FALSE;
goto cleanup;
}
TIFFClose (tiff);
@ -753,20 +776,18 @@ gdk_pixbuf__tiff_image_save_to_callback (GdkPixbufSaveFunc save_func,
tiff_set_error (error,
GDK_PIXBUF_ERROR_FAILED,
_("TIFFClose operation failed"));
free_save_context (context);
tiff_pop_handlers ();
return FALSE;
retval = FALSE;
goto cleanup;
}
tiff_pop_handlers ();
/* Now call the callback */
retval = save_func (context->buffer, context->used, error, user_data);
free_save_context (context);
cleanup:
g_free (icc_profile);
tiff_pop_handlers ();
free_save_context (context);
return retval;
}