gstreamer/ext/dirac/gstdiracdec.cc
David Schleef 08499d6af3 configure.ac: Add prototype Dirac support.
Original commit message from CVS:
* configure.ac: Add prototype Dirac support.
* ext/Makefile.am:
* ext/dirac/Makefile.am:
* ext/dirac/gstdirac.cc:
* ext/dirac/gstdiracdec.cc:
2004-05-11 02:30:16 +00:00

214 lines
5.6 KiB
C++

/* GStreamer
* Copyright (C) 2004 David A. Schleef <ds@schleef.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <seq_decompress.h>
#include <pic_io.h>
#define GST_TYPE_DIRACDEC \
(gst_diracdec_get_type())
#define GST_DIRACDEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRACDEC,GstDiracDec))
#define GST_DIRACDEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRACDEC,GstDiracDec))
#define GST_IS_DIRACDEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRACDEC))
#define GST_IS_DIRACDEC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRACDEC))
typedef struct _GstDiracDec GstDiracDec;
typedef struct _GstDiracDecClass GstDiracDecClass;
struct _GstDiracDec
{
GstElement element;
/* pads */
GstPad *sinkpad, *srcpad;
SequenceDecompressor *decompress;
PicOutput *output_image;
};
struct _GstDiracDecClass
{
GstElementClass parent_class;
};
GType gst_diracdec_get_type (void);
/* elementfactory information */
GstElementDetails gst_diracdec_details = {
"Dirac stream decoder",
"Codec/Decoder",
"Decode DIRAC streams",
"David Schleef <ds@schleef.org>",
};
GST_DEBUG_CATEGORY (diracdec_debug);
#define GST_CAT_DEFAULT diracdec_debug
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
/* FILL ME */
};
static void gst_diracdec_base_init (gpointer g_class);
static void gst_diracdec_class_init (GstDiracDec * klass);
static void gst_diracdec_init (GstDiracDec * diracdec);
static void gst_diracdec_chain (GstPad * pad, GstData * _data);
static GstPadLinkReturn gst_diracdec_link (GstPad * pad, const GstCaps * caps);
static GstElementClass *parent_class = NULL;
/*static guint gst_diracdec_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_diracdec_get_type (void)
{
static GType diracdec_type = 0;
if (!diracdec_type) {
static const GTypeInfo diracdec_info = {
sizeof (GstDiracDec),
gst_diracdec_base_init,
NULL,
(GClassInitFunc) gst_diracdec_class_init,
NULL,
NULL,
sizeof (GstDiracDec),
0,
(GInstanceInitFunc) gst_diracdec_init,
};
diracdec_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstDiracDec", &diracdec_info,
(GTypeFlags) 0);
}
return diracdec_type;
}
static GstStaticPadTemplate gst_diracdec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
static GstStaticPadTemplate gst_diracdec_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("image/dirac, "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], " "framerate = (double) [ 1, MAX ]")
);
static void
gst_diracdec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_diracdec_src_pad_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_diracdec_sink_pad_template));
gst_element_class_set_details (element_class, &gst_diracdec_details);
}
static void
gst_diracdec_class_init (GstDiracDec * klass)
{
GstElementClass *gstelement_class;
gstelement_class = (GstElementClass *) klass;
parent_class = GST_ELEMENT_CLASS (g_type_class_ref (GST_TYPE_ELEMENT));
GST_DEBUG_CATEGORY_INIT (diracdec_debug, "diracdec", 0, "DIRAC decoder");
}
static void
gst_diracdec_init (GstDiracDec * diracdec)
{
GST_DEBUG ("gst_diracdec_init: initializing");
/* create the sink and src pads */
diracdec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_diracdec_sink_pad_template), "sink");
gst_element_add_pad (GST_ELEMENT (diracdec), diracdec->sinkpad);
gst_pad_set_chain_function (diracdec->sinkpad, gst_diracdec_chain);
gst_pad_set_link_function (diracdec->sinkpad, gst_diracdec_link);
diracdec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_diracdec_src_pad_template), "src");
gst_pad_use_explicit_caps (diracdec->srcpad);
gst_element_add_pad (GST_ELEMENT (diracdec), diracdec->srcpad);
diracdec->decompress = new SequenceDecompressor;
diracdec->output_image = new PicOutput;
}
static GstPadLinkReturn
gst_diracdec_link (GstPad * pad, const GstCaps * caps)
{
//GstDiracDec *diracdec = GST_DIRACDEC (gst_pad_get_parent (pad));
GstStructure *structure;
//GstCaps *srccaps;
structure = gst_caps_get_structure (caps, 0);
return GST_PAD_LINK_OK;
}
static void
gst_diracdec_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstDiracDec *diracdec;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
diracdec = GST_DIRACDEC (GST_OBJECT_PARENT (pad));
gst_buffer_unref (buf);
}