vdpau: add basic base class for vdpau decoders

sys/vdpau/Makefile.am

@@ -1,11 +1,14 @@
+plugin_LTLIBRARIES = libgstvdpau.la
 
-lib_LTLIBRARIES = \
-	libgstvdpau.la
+libgstvdpau_la_SOURCES = \
+	gstvdpaudecoder.c
 
-libgstvdpau_la_SOURCES =
-
-libgstvdpau_la_CFLAGS = $(GST_CFLAGS)
-libgstvdpau_la_LIBADD = $(GST_LIBS)
+libgstvdpau_la_CFLAGS = $(GST_CFLAGS) $(X11_CFLAGS) -Ivdpau
+libgstvdpau_la_LIBADD = $(GST_LIBS) $(X11_LIBS) -lvdpau
 libgstvdpau_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 libgstvdpau_la_LIBTOOLFLAGS = --tag=disable-static
 
+noinst_HEADERS = \
+	gstvdpaudecoder.h
+	
+

sys/vdpau/gstvdpaudecoder.c

@@ -0,0 +1,224 @@
+/*
+ * GStreamer
+ * Copyright (C) 2006 Stefan Kost <ensonic@users.sf.net>
+ * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
+ *
+ * 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/controller/gstcontroller.h>
+
+#include <X11/Xlib.h>
+#include <vdpau/vdpau_x11.h>
+#include "gstvdpaudecoder.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_vdpaudecoder_debug);
+#define GST_CAT_DEFAULT gst_vdpaudecoder_debug
+
+/* Filter signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  PROP_0,
+  PROP_DISPLAY,
+  PROP_SILENT
+};
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-yuv, "
+        "framerate = (fraction) [ 0, MAX ], "
+        "width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]"));
+
+/* debug category for fltering log messages
+ *
+ * FIXME:exchange the string 'Template vdpaudecoder' with your description
+ */
+#define DEBUG_INIT(bla) \
+    GST_DEBUG_CATEGORY_INIT (gst_vdpaudecoder_debug, "vdpaudecoder", 0, "vdpaudecoder base class");
+
+GST_BOILERPLATE_FULL (GstVDPAUDecoder, gst_vdpaudecoder, GstElement,
+    GST_TYPE_ELEMENT, DEBUG_INIT);
+
+static void gst_vdpaudecoder_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_vdpaudecoder_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static GstStateChangeReturn gst_vdpaudecoder_change_state (GstElement * element,
+    GstStateChange transition);
+
+/* GObject vmethod implementations */
+
+static void
+gst_vdpaudecoder_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_set_details_simple (element_class,
+      "VDPAUDecoder",
+      "Generic/Filter",
+      "VDPAU decoder base class",
+      "Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_template));
+}
+
+/* initialize the vdpaudecoder's class */
+static void
+gst_vdpaudecoder_class_init (GstVDPAUDecoderClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  gobject_class->set_property = gst_vdpaudecoder_set_property;
+  gobject_class->get_property = gst_vdpaudecoder_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_DISPLAY,
+      g_param_spec_string ("display", "Display", "X Display name",
+          NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+  g_object_class_install_property (gobject_class, PROP_SILENT,
+      g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
+          FALSE, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
+
+  gstelement_class->change_state =
+      GST_DEBUG_FUNCPTR (gst_vdpaudecoder_change_state);
+}
+
+static void
+gst_vdpaudecoder_init (GstVDPAUDecoder * dec, GstVDPAUDecoderClass * klass)
+{
+  dec->display = NULL;
+  dec->device = 0;
+  dec->silent = FALSE;
+
+  dec->src = gst_pad_new_from_static_template (&src_template, "src");
+  gst_element_add_pad (GST_ELEMENT (dec), dec->src);
+
+  dec->sink =
+      gst_pad_new_from_template (gst_element_class_get_pad_template
+      (GST_ELEMENT_CLASS (klass), "sink"), "sink");
+  gst_element_add_pad (GST_ELEMENT (dec), dec->sink);
+}
+
+static GstStateChangeReturn
+gst_vdpaudecoder_change_state (GstElement * element, GstStateChange transition)
+{
+  GstVDPAUDecoder *dec;
+
+  dec = GST_VDPAUDECODER (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+    {
+      Display *display;
+      int screen;
+      VdpStatus status;
+
+      /* FIXME: We probably want to use the same VdpDevice for every VDPAU element */
+      display = XOpenDisplay (dec->display);
+      if (!display) {
+        GST_ELEMENT_ERROR (dec, RESOURCE, WRITE, ("Could not initialise VDPAU"),
+            ("Could not open display"));
+        return GST_STATE_CHANGE_FAILURE;
+      }
+
+      screen = DefaultScreen (display);
+      status = vdp_device_create_x11 (display, screen, &dec->device, NULL);
+      if (status != VDP_STATUS_OK) {
+        GST_ELEMENT_ERROR (dec, RESOURCE, WRITE, ("Could not initialise VDPAU"),
+            ("Could not create VDPAU device"));
+        XCloseDisplay (display);
+
+        return GST_STATE_CHANGE_FAILURE;
+      }
+      XCloseDisplay (display);
+      break;
+    }
+
+    default:
+      break;
+  }
+
+  return GST_STATE_CHANGE_SUCCESS;
+}
+
+static void
+gst_vdpaudecoder_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstVDPAUDecoder *dec = GST_VDPAUDECODER (object);
+
+  switch (prop_id) {
+    case PROP_DISPLAY:
+      g_free (dec->display);
+      dec->display = g_value_dup_string (value);
+      break;
+    case PROP_SILENT:
+      dec->silent = g_value_get_boolean (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_vdpaudecoder_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstVDPAUDecoder *dec = GST_VDPAUDECODER (object);
+
+  switch (prop_id) {
+    case PROP_DISPLAY:
+      g_value_set_string (value, dec->display);
+      break;
+    case PROP_SILENT:
+      g_value_set_boolean (value, dec->silent);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "vdpau",
+    "vdpau elements",
+    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

sys/vdpau/gstvdpaudecoder.h

@@ -0,0 +1,66 @@
+/* 
+ * GStreamer
+ * Copyright (C) 2006 Stefan Kost <ensonic@users.sf.net>
+ * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
+ *
+ * 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.
+ */
+ 
+#ifndef __GST_VDPAUDECODER_H__
+#define __GST_VDPAUDECODER_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+#include <vdpau/vdpau.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_VDPAUDECODER \
+  (gst_vdpaudecoder_get_type())
+#define GST_VDPAUDECODER(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VDPAUDECODER,GstVDPAUDecoder))
+#define GST_VDPAUDECODER_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VDPAUDECODER,GstVDPAUDecoderClass))
+#define GST_IS_VDPAUDECODER(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VDPAUDECODER))
+#define GST_IS_VDPAUDECODER_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VDPAUDECODER))
+
+typedef struct _GstVDPAUDecoder      GstVDPAUDecoder;
+typedef struct _GstVDPAUDecoderClass GstVDPAUDecoderClass;
+
+struct _GstVDPAUDecoder {
+  GstElement element;
+
+  gchar *display;
+  VdpDevice device;
+
+  GstPad *src;
+  GstPad *sink;
+
+  gboolean silent;
+};
+
+struct _GstVDPAUDecoderClass {
+  GstBaseTransformClass parent_class;
+};
+
+GType gst_vdpaudecoder_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_VDPAUDECODER_H__ */