From 403315efbb940e5b088fecd1bfc19342023f2544 Mon Sep 17 00:00:00 2001 From: Tor Lillqvist Date: Thu, 20 Mar 2008 23:24:45 +0000 Subject: Import the GDI+ gdk-pixbuf loaders for Windows by Dominic Lachowicz and 2008-03-21 Tor Lillqvist Import the GDI+ gdk-pixbuf loaders for Windows by Dominic Lachowicz and Alberto Ruiz into the GTK+ tree, from the gdip-pixbuf-loader module. * configure.in: Add switch --disable-gdiplus-loaders that disables building of the GDI+ loaders. When including loaders in the gdk-pixbuf library, either build in abll the GDI+ ones or none of them. Use just -DINCLUDE_gdiplus in $INCLUDED_LOADER_DEFINE to signal building them in. Add Automake conditionals BUILD_GDIPLUS_LOADERS to indicate whether the GDI+ loaders should be built and INCLUDE_GDIPLUS to indicate whether they should be built-in. For the rest of the changes, see gdk-pixbuf/ChangeLog. In gdk-pixbuf: * Makefile.am: Add the bits and pieces for the GDI+ loaders. When building GDI+ loaders don't build the traditional ones for the same formats. Always build the traditional PNG loader, though, as it isn't possible to read and write PNG tEXt chunks through GDI+, and GIMP at least needs that functionality in the gdk-pixbuf PNG loader. Either build all the GDI+ loaders (except the PNG one) into libgdk-pixbuf, or build them all as DLLs. I don't see any reason to enable cherry-picking among them whether to build in or not. * io-gdip-animation.c * io-gdip-animation.h * io-gdip-bmp.c * io-gdip-emf.c * io-gdip-gif.c * io-gdip-ico.c * io-gdip-jpeg.c * io-gdip-native.h * io-gdip-png.c * io-gdip-propertytags.h * io-gdip-tiff.c * io-gdip-utils.c * io-gdip-utils.h * io-gdip-wmf.c: New files. Note that io-gdip-png.c is not currently used. * gdk-pixbuf-io.c: Add the bits and pieces for built-in GDI+ loaders. svn path=/trunk/; revision=19914 --- gdk-pixbuf/io-gdip-jpeg.c | 141 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 gdk-pixbuf/io-gdip-jpeg.c (limited to 'gdk-pixbuf/io-gdip-jpeg.c') diff --git a/gdk-pixbuf/io-gdip-jpeg.c b/gdk-pixbuf/io-gdip-jpeg.c new file mode 100644 index 000000000..8bd305860 --- /dev/null +++ b/gdk-pixbuf/io-gdip-jpeg.c @@ -0,0 +1,141 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* GdkPixbuf library - Win32 GDI+ Pixbuf Loader + * + * Copyright (C) 2008 Dominic Lachowicz + * Copyright (C) 2008 Alberto Ruiz + * + * Authors: Dominic Lachowicz + * Alberto Ruiz + * + * 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 * 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. + */ + +#define INITGUID +#include "io-gdip-utils.h" + +DEFINE_GUID(EncoderQuality, 0x1d5be4b5,0xfa4a,0x452d,0x9c,0xdd,0x5d,0xb3,0x51,0x05,0xe7,0xeb); + +static gboolean +gdk_pixbuf__gdip_image_save_JPEG_to_callback (GdkPixbufSaveFunc save_func, + gpointer user_data, + GdkPixbuf *pixbuf, + gchar **keys, + gchar **values, + GError **error) +{ + EncoderParameters encoder_params; + LONG quality = 75; /* default; must be between 0 and 100 */ + + if (keys && *keys) { + gchar **kiter = keys; + gchar **viter = values; + + while (*kiter) { + if (strcmp (*kiter, "quality") == 0) { + char *endptr = NULL; + quality = strtol (*viter, &endptr, 10); + + if (endptr == *viter) { + g_set_error (error, + GDK_PIXBUF_ERROR, + GDK_PIXBUF_ERROR_BAD_OPTION, + _("JPEG quality must be a value between 0 and 100; value '%s' could not be parsed."), + *viter); + + return FALSE; + } + + if (quality < 0 || + quality > 100) { + /* This is a user-visible error; + * lets people skip the range-checking + * in their app. + */ + g_set_error (error, + GDK_PIXBUF_ERROR, + GDK_PIXBUF_ERROR_BAD_OPTION, + _("JPEG quality must be a value between 0 and 100; value '%d' is not allowed."), + (int)quality); + + return FALSE; + } + } else { + g_warning ("Unrecognized parameter (%s) passed to JPEG saver.", *kiter); + } + + ++kiter; + ++viter; + } + } + + encoder_params.Count = 1; + encoder_params.Parameter[0].Guid = EncoderQuality; + encoder_params.Parameter[0].Type = EncoderParameterValueTypeLong; + encoder_params.Parameter[0].NumberOfValues = 1; + encoder_params.Parameter[0].Value = &quality; + + return gdip_save_pixbuf (pixbuf, L"image/jpeg", &encoder_params, save_func, user_data, error); +} + +static gboolean +gdk_pixbuf__gdip_image_save_JPEG (FILE *f, + GdkPixbuf *pixbuf, + gchar **keys, + gchar **values, + GError **error) +{ + return gdk_pixbuf__gdip_image_save_JPEG_to_callback (gdip_save_to_file_callback, f, pixbuf, keys, values, error); +} + +#ifndef INCLUDE_gdiplus +#define MODULE_ENTRY(function) G_MODULE_EXPORT void function +#else +#define MODULE_ENTRY(function) void _gdk_pixbuf__gdip_jpeg_ ## function +#endif + +MODULE_ENTRY (fill_vtable) (GdkPixbufModule *module) +{ + gdip_fill_vtable (module); + + module->save_to_callback = gdk_pixbuf__gdip_image_save_JPEG_to_callback; + module->save = gdk_pixbuf__gdip_image_save_JPEG; /* for gtk < 2.14, you need to implement both. otherwise gdk-pixbuf-queryloaders fails */ +} + +MODULE_ENTRY (fill_info) (GdkPixbufFormat *info) +{ + static GdkPixbufModulePattern signature[] = { + { "\xff\xd8", NULL, 100 }, /* JPEG */ + { NULL, NULL, 0 } + }; + + static gchar *mime_types[] = { + "image/jpeg", + NULL + }; + + static gchar *extensions[] = { + "jpeg", + "jpe", + "jpg", + NULL + }; + + info->name = "jpeg"; + info->signature = signature; + info->description = _("The JPEG image format"); + info->mime_types = mime_types; + info->extensions = extensions; + info->flags = GDK_PIXBUF_FORMAT_WRITABLE | GDK_PIXBUF_FORMAT_THREADSAFE; + info->license = "LGPL"; +} -- cgit v1.2.1