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/* $Id:$ */
/*
libg3d - 3D object loading library
Copyright (C) 2005-2009 Markus Dahms <mad@automagically.de>
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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <gsf/gsf-infile.h>
#include <gsf/gsf-infile-impl.h>
#include <gsf/gsf-impl-utils.h>
#include <g3d/types.h>
#include <g3d/stream.h>
#include "stream_gsf_class.h"
static GObjectClass *parent_class;
struct _G3DGsfInputStream {
GsfInput input;
G3DStream *stream;
guint8 *buf;
gsize buf_size;
};
typedef struct {
GsfInputClass input_class;
} G3DGsfInputStreamClass;
EAPI
GsfInput *g3d_gsf_input_stream_new(G3DStream *stream)
{
G3DGsfInputStream *g3dsf;
g3dsf = g_object_new(G3D_GSF_INPUT_STREAM_TYPE, NULL);
g3dsf->stream = stream;
gsf_input_set_size(GSF_INPUT(g3dsf), g3d_stream_size(stream));
gsf_input_set_name_from_filename(GSF_INPUT(g3dsf), stream->uri);
return GSF_INPUT(g3dsf);
}
EAPI G3DStream *g3d_gsf_input_stream_get_stream(GsfInput *input)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
return g3dsf->stream;
}
static void g3d_gsf_input_stream_finalize(GObject *obj)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(obj);
if(g3dsf->buf)
g_free(g3dsf->buf);
parent_class->finalize(obj);
}
static GsfInput *g3d_gsf_input_stream_dup(GsfInput *src_input, GError **err)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(src_input);
return g3d_gsf_input_stream_new(g3dsf->stream);
}
static const guint8 *g3d_gsf_input_stream_read(GsfInput *input,
size_t num_bytes, guint8 *buffer)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
if(buffer == NULL) {
if(g3dsf->buf_size < num_bytes) {
g3dsf->buf_size = num_bytes;
if(g3dsf->buf)
g_free(g3dsf->buf);
g3dsf->buf = g_new0(guint8, num_bytes);
}
buffer = g3dsf->buf;
}
g3d_stream_read(g3dsf->stream, buffer, num_bytes);
return buffer;
}
static gboolean g3d_gsf_input_stream_seek(GsfInput *input, gsf_off_t offset,
GSeekType whence)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(input);
return g3d_stream_seek(g3dsf->stream, offset, whence);
}
static void g3d_gsf_input_stream_init(GObject *obj)
{
G3DGsfInputStream *g3dsf = G3D_GSF_INPUT_STREAM(obj);
g3dsf->stream = NULL;
g3dsf->buf = NULL;
g3dsf->buf_size = 0;
}
static void g3d_gsf_input_stream_class_init(GObjectClass *gobject_class)
{
GsfInputClass *input_class = GSF_INPUT_CLASS(gobject_class);
gobject_class->finalize = g3d_gsf_input_stream_finalize;
input_class->Dup = g3d_gsf_input_stream_dup;
input_class->Read = g3d_gsf_input_stream_read;
input_class->Seek = g3d_gsf_input_stream_seek;
parent_class = g_type_class_peek_parent(gobject_class);
}
GSF_CLASS(G3DGsfInputStream,
g3d_gsf_input_stream,
g3d_gsf_input_stream_class_init,
g3d_gsf_input_stream_init,
GSF_INPUT_TYPE)
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