gstreamer/ext/libmng/gstmngenc.c
2012-04-10 00:51:41 +01:00

191 lines
4.8 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* Filter:
* Copyright (C) 2000 Donald A. Graft
*
* 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 <string.h>
#include <gst/gst.h>
#include "gstmngenc.h"
#include <gst/video/video.h>
#define MAX_HEIGHT 4096
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_SNAPSHOT TRUE
enum
{
ARG_0
};
static void gst_mng_enc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_mng_enc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_mng_enc_chain (GstPad * pad, GstBuffer * buf);
GstPadTemplate *mngenc_src_template, *mngenc_sink_template;
GST_BOILERPLATE (GstMngEnc, gst_mng_enc, GstElement, GST_TYPE_ELEMENT);
static GstCaps *
mng_caps_factory (void)
{
return gst_caps_new_simple ("video/x-mng",
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096,
"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE, NULL);
}
static GstCaps *
raw_caps_factory (void)
{
return gst_caps_from_string (GST_VIDEO_CAPS_RGB);
}
static void
gst_mng_enc_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstCaps *raw_caps, *mng_caps;
raw_caps = raw_caps_factory ();
mng_caps = mng_caps_factory ();
mngenc_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, raw_caps);
mngenc_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS, mng_caps);
gst_element_class_add_pad_template (element_class, mngenc_sink_template);
gst_element_class_add_pad_template (element_class, mngenc_src_template);
gst_element_class_set_static_metadata (element_class, "MNG video encoder",
"Codec/Encoder/Video",
"Encode a video frame to an .mng video", "Wim Taymans <wim@fluendo.com>");
}
static void
gst_mng_enc_class_init (GstMngEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->get_property = gst_mng_enc_get_property;
gobject_class->set_property = gst_mng_enc_set_property;
}
static gboolean
gst_mng_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstMngEnc *mngenc;
gdouble fps;
GstStructure *structure;
mngenc = GST_MNG_ENC (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &mngenc->width);
gst_structure_get_int (structure, "height", &mngenc->height);
gst_structure_get_double (structure, "framerate", &fps);
gst_structure_get_int (structure, "bpp", &mngenc->bpp);
caps = gst_caps_new_simple ("video/x-mng",
"framerate", G_TYPE_DOUBLE, fps,
"width", G_TYPE_INT, mngenc->width,
"height", G_TYPE_INT, mngenc->height, NULL);
gst_pad_set_caps (mngenc->srcpad, caps);
gst_caps_unref (caps);
gst_object_unref (mngenc);
return TRUE;
}
static void
gst_mng_enc_init (GstMngEnc * mngenc, GstMngEncClass * gclass)
{
mngenc->sinkpad = gst_pad_new_from_template (mngenc_sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (mngenc), mngenc->sinkpad);
mngenc->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (mngenc), mngenc->srcpad);
gst_pad_set_chain_function (mngenc->sinkpad, gst_mng_enc_chain);
gst_pad_set_setcaps_function (mngenc->sinkpad, gst_mng_enc_sink_setcaps);
}
static GstFlowReturn
gst_mng_enc_chain (GstPad * pad, GstBuffer * buf)
{
GstMngEnc *mngenc;
mngenc = GST_MNG_ENC (gst_pad_get_parent (pad));
/* FIXME, do something here */
gst_buffer_unref (buf);
gst_object_unref (mngenc);
return GST_FLOW_NOT_SUPPORTED;
}
static void
gst_mng_enc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstMngEnc *mngenc;
mngenc = GST_MNG_ENC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mng_enc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstMngEnc *mngenc;
mngenc = GST_MNG_ENC (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}