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diff --git a/src/others/mimesh/libg3d-0.0.8/src/stream_gsf_class.c b/src/others/mimesh/libg3d-0.0.8/src/stream_gsf_class.c
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1/* $Id:$ */
2
3/*
4 libg3d - 3D object loading library
5
6 Copyright (C) 2005-2009 Markus Dahms <mad@automagically.de>
7
8 This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public
10 License as published by the Free Software Foundation; either
11 version 2.1 of the License, or (at your option) any later version.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with this library; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21*/
22#include <gsf/gsf-infile.h>
23#include <gsf/gsf-infile-impl.h>
24#include <gsf/gsf-impl-utils.h>
25
26#include <g3d/types.h>
27#include <g3d/stream.h>
28
29#include "stream_gsf_class.h"
30
31static GObjectClass *parent_class;
32
33struct _G3DGsfInputStream {
34 GsfInput input;
35 G3DStream *stream;
36 guint8 *buf;
37 gsize buf_size;
38};
39
40typedef struct {
41 GsfInputClass input_class;
42} G3DGsfInputStreamClass;
43
44EAPI
45GsfInput *g3d_gsf_input_stream_new(G3DStream *stream)
46{
47 G3DGsfInputStream *g3dsf;
48
49 g3dsf = g_object_new(G3D_GSF_INPUT_STREAM_TYPE, NULL);
50 g3dsf->stream = stream;
51
52 gsf_input_set_size(GSF_INPUT(g3dsf), g3d_stream_size(stream));
53 gsf_input_set_name_from_filename(GSF_INPUT(g3dsf), stream->uri);
54
55 return GSF_INPUT(g3dsf);
56}
57
58EAPI G3DStream *g3d_gsf_input_stream_get_stream(GsfInput *input)
59{
60 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
61
62 return g3dsf->stream;
63}
64
65static void g3d_gsf_input_stream_finalize(GObject *obj)
66{
67 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(obj);
68
69 if(g3dsf->buf)
70 g_free(g3dsf->buf);
71
72 parent_class->finalize(obj);
73}
74
75static GsfInput *g3d_gsf_input_stream_dup(GsfInput *src_input, GError **err)
76{
77 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(src_input);
78
79 return g3d_gsf_input_stream_new(g3dsf->stream);
80}
81
82static const guint8 *g3d_gsf_input_stream_read(GsfInput *input,
83 size_t num_bytes, guint8 *buffer)
84{
85 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
86
87 if(buffer == NULL) {
88 if(g3dsf->buf_size < num_bytes) {
89 g3dsf->buf_size = num_bytes;
90 if(g3dsf->buf)
91 g_free(g3dsf->buf);
92 g3dsf->buf = g_new0(guint8, num_bytes);
93 }
94 buffer = g3dsf->buf;
95 }
96
97 g3d_stream_read(g3dsf->stream, buffer, num_bytes);
98 return buffer;
99}
100
101static gboolean g3d_gsf_input_stream_seek(GsfInput *input, gsf_off_t offset,
102 GSeekType whence)
103{
104 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
105
106 return g3d_stream_seek(g3dsf->stream, offset, whence);
107}
108
109static void g3d_gsf_input_stream_init(GObject *obj)
110{
111 G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(obj);
112
113 g3dsf->stream = NULL;
114 g3dsf->buf = NULL;
115 g3dsf->buf_size = 0;
116}
117
118static void g3d_gsf_input_stream_class_init(GObjectClass *gobject_class)
119{
120 GsfInputClass *input_class = GSF_INPUT_CLASS(gobject_class);
121
122 gobject_class->finalize = g3d_gsf_input_stream_finalize;
123 input_class->Dup = g3d_gsf_input_stream_dup;
124 input_class->Read = g3d_gsf_input_stream_read;
125 input_class->Seek = g3d_gsf_input_stream_seek;
126
127 parent_class = g_type_class_peek_parent(gobject_class);
128}
129
130GSF_CLASS(G3DGsfInputStream,
131 g3d_gsf_input_stream,
132 g3d_gsf_input_stream_class_init,
133 g3d_gsf_input_stream_init,
134 GSF_INPUT_TYPE)
135