--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2004> Jan Schmidt <thaytan@mad.scientist.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 <pixbufscale.h>
+#include <gst/video/video.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+/* debug variable definition */
+GST_DEBUG_CATEGORY (pixbufscale_debug);
+#define GST_CAT_DEFAULT pixbufscale_debug
+
+/* elementfactory information */
+static GstElementDetails pixbufscale_details =
+GST_ELEMENT_DETAILS ("Gdk Pixbuf scaler",
+ "Filter/Effect/Video",
+ "Resizes video",
+ "Jan Schmidt <thaytan@mad.scientist.com>\nWim Taymans <wim.taymans@chello.be>");
+
+/* GstPixbufScale signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_METHOD,
+ /* FILL ME */
+};
+
+static GstStaticPadTemplate gst_pixbufscale_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+ );
+
+static GstStaticPadTemplate gst_pixbufscale_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+ );
+
+#define GST_TYPE_PIXBUFSCALE_METHOD (gst_pixbufscale_method_get_type())
+static GType
+gst_pixbufscale_method_get_type (void)
+{
+ static GType pixbufscale_method_type = 0;
+ static GEnumValue pixbufscale_methods[] = {
+ {GST_PIXBUFSCALE_NEAREST, "0", "Nearest Neighbour"},
+ {GST_PIXBUFSCALE_TILES, "1", "Tiles"},
+ {GST_PIXBUFSCALE_BILINEAR, "2", "Bilinear"},
+ {GST_PIXBUFSCALE_HYPER, "3", "Hyper"},
+ {0, NULL, NULL},
+ };
+
+ if (!pixbufscale_method_type) {
+ pixbufscale_method_type =
+ g_enum_register_static ("GstPixbufScaleMethod", pixbufscale_methods);
+ }
+ return pixbufscale_method_type;
+}
+
+static void gst_pixbufscale_base_init (gpointer g_class);
+static void gst_pixbufscale_class_init (GstPixbufScaleClass * klass);
+static void gst_pixbufscale_init (GstPixbufScale * pixbufscale);
+static gboolean gst_pixbufscale_handle_src_event (GstPad * pad,
+ GstEvent * event);
+
+static void gst_pixbufscale_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_pixbufscale_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_pixbufscale_chain (GstPad * pad, GstData * _data);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_pixbufscale_get_type (void)
+{
+ static GType pixbufscale_type = 0;
+
+ if (!pixbufscale_type) {
+ static const GTypeInfo pixbufscale_info = {
+ sizeof (GstPixbufScaleClass),
+ gst_pixbufscale_base_init,
+ NULL,
+ (GClassInitFunc) gst_pixbufscale_class_init,
+ NULL,
+ NULL,
+ sizeof (GstPixbufScale),
+ 0,
+ (GInstanceInitFunc) gst_pixbufscale_init,
+ };
+
+ pixbufscale_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstPixbufScale",
+ &pixbufscale_info, 0);
+ }
+ return pixbufscale_type;
+}
+
+static void
+gst_pixbufscale_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details (element_class, &pixbufscale_details);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_pixbufscale_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_pixbufscale_sink_template));
+}
+static void
+gst_pixbufscale_class_init (GstPixbufScaleClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD,
+ g_param_spec_enum ("method", "method", "method",
+ GST_TYPE_PIXBUFSCALE_METHOD, GST_PIXBUFSCALE_BILINEAR,
+ G_PARAM_READWRITE));
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_pixbufscale_set_property;
+ gobject_class->get_property = gst_pixbufscale_get_property;
+}
+
+static GstCaps *
+gst_pixbufscale_getcaps (GstPad * pad)
+{
+ GstPixbufScale *pixbufscale;
+ GstCaps *othercaps;
+ GstCaps *caps;
+ GstPad *otherpad;
+ int i;
+
+ pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
+
+ otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
+ pixbufscale->srcpad;
+ othercaps = gst_pad_get_allowed_caps (otherpad);
+
+ caps = gst_caps_copy (othercaps);
+ for (i = 0; i < gst_caps_get_size (caps); i++) {
+ GstStructure *structure = gst_caps_get_structure (caps, i);
+
+ gst_structure_set (structure,
+ "width", GST_TYPE_INT_RANGE, 16, G_MAXINT,
+ "height", GST_TYPE_INT_RANGE, 16, G_MAXINT, NULL);
+ }
+
+ GST_DEBUG ("getcaps are: %" GST_PTR_FORMAT, caps);
+ return caps;
+}
+
+static GstPadLinkReturn
+gst_pixbufscale_link (GstPad * pad, const GstCaps * caps)
+{
+ GstPixbufScale *pixbufscale;
+ GstPadLinkReturn ret;
+ GstPad *otherpad;
+ GstStructure *structure;
+ int height, width;
+
+ GST_DEBUG ("gst_pixbufscale_link %s\n", gst_caps_to_string (caps));
+ pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
+
+ otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
+ pixbufscale->srcpad;
+
+ structure = gst_caps_get_structure (caps, 0);
+ ret = gst_structure_get_int (structure, "width", &width);
+ ret &= gst_structure_get_int (structure, "height", &height);
+
+ ret = gst_pad_try_set_caps (otherpad, caps);
+ if (ret == GST_PAD_LINK_OK) {
+ /* cool, we can use passthru */
+
+ pixbufscale->to_width = width;
+ pixbufscale->to_height = height;
+ pixbufscale->from_width = width;
+ pixbufscale->from_height = height;
+
+ pixbufscale->from_buf_size = width * height * 3;
+ pixbufscale->to_buf_size = width * height * 3;
+
+ pixbufscale->inited = TRUE;
+
+ return GST_PAD_LINK_OK;
+ }
+
+ if (gst_pad_is_negotiated (otherpad)) {
+ GstCaps *newcaps = gst_caps_copy (caps);
+
+ if (pad == pixbufscale->srcpad) {
+ gst_caps_set_simple (newcaps,
+ "width", G_TYPE_INT, pixbufscale->from_width,
+ "height", G_TYPE_INT, pixbufscale->from_height, NULL);
+ } else {
+ gst_caps_set_simple (newcaps,
+ "width", G_TYPE_INT, pixbufscale->to_width,
+ "height", G_TYPE_INT, pixbufscale->to_height, NULL);
+ }
+ ret = gst_pad_try_set_caps (otherpad, newcaps);
+ if (GST_PAD_LINK_FAILED (ret)) {
+ return GST_PAD_LINK_REFUSED;
+ }
+ }
+
+ pixbufscale->passthru = FALSE;
+
+ if (pad == pixbufscale->srcpad) {
+ pixbufscale->to_width = width;
+ pixbufscale->to_height = height;
+ } else {
+ pixbufscale->from_width = width;
+ pixbufscale->from_height = height;
+ }
+
+ if (gst_pad_is_negotiated (otherpad)) {
+ pixbufscale->from_buf_size = pixbufscale->from_width *
+ pixbufscale->from_height * 3;
+ pixbufscale->to_buf_size = pixbufscale->to_width *
+ pixbufscale->to_height * 3;
+ pixbufscale->inited = TRUE;
+ }
+
+ return GST_PAD_LINK_OK;
+}
+
+static void
+gst_pixbufscale_init (GstPixbufScale * pixbufscale)
+{
+ GST_DEBUG_OBJECT (pixbufscale, "_init");
+ pixbufscale->sinkpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_pixbufscale_sink_template), "sink");
+ gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->sinkpad);
+ gst_pad_set_chain_function (pixbufscale->sinkpad, gst_pixbufscale_chain);
+ gst_pad_set_link_function (pixbufscale->sinkpad, gst_pixbufscale_link);
+ gst_pad_set_getcaps_function (pixbufscale->sinkpad, gst_pixbufscale_getcaps);
+
+ pixbufscale->srcpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_pixbufscale_src_template), "src");
+ gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->srcpad);
+ gst_pad_set_event_function (pixbufscale->srcpad,
+ gst_pixbufscale_handle_src_event);
+ gst_pad_set_link_function (pixbufscale->srcpad, gst_pixbufscale_link);
+ gst_pad_set_getcaps_function (pixbufscale->srcpad, gst_pixbufscale_getcaps);
+
+ pixbufscale->inited = FALSE;
+
+ pixbufscale->method = GST_PIXBUFSCALE_TILES;
+ pixbufscale->gdk_method = GDK_INTERP_TILES;
+}
+
+static gboolean
+gst_pixbufscale_handle_src_event (GstPad * pad, GstEvent * event)
+{
+ GstPixbufScale *pixbufscale;
+ double a;
+ GstStructure *structure;
+ GstEvent *new_event;
+
+ pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_NAVIGATION:
+ structure = gst_structure_copy (event->event_data.structure.structure);
+ if (gst_structure_get_double (event->event_data.structure.structure,
+ "pointer_x", &a)) {
+ gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
+ a * pixbufscale->from_width / pixbufscale->to_width, NULL);
+ }
+ if (gst_structure_get_double (event->event_data.structure.structure,
+ "pointer_y", &a)) {
+ gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
+ a * pixbufscale->from_height / pixbufscale->to_height, NULL);
+ }
+ gst_event_unref (event);
+ new_event = gst_event_new (GST_EVENT_NAVIGATION);
+ new_event->event_data.structure.structure = structure;
+ return gst_pad_event_default (pad, new_event);
+ break;
+ default:
+ return gst_pad_event_default (pad, event);
+ break;
+ }
+}
+
+static void
+pixbufscale_scale (GstPixbufScale * scale, unsigned char *dest,
+ unsigned char *src)
+{
+ GdkPixbuf *src_pixbuf, *dest_pixbuf;
+
+ src_pixbuf = gdk_pixbuf_new_from_data
+ (src, GDK_COLORSPACE_RGB, FALSE,
+ 8, scale->from_width, scale->from_height,
+ 3 * scale->from_width, NULL, NULL);
+ dest_pixbuf = gdk_pixbuf_new_from_data
+ (dest, GDK_COLORSPACE_RGB, FALSE,
+ 8, scale->to_width, scale->to_height, 3 * scale->to_width, NULL, NULL);
+ gdk_pixbuf_scale (src_pixbuf, dest_pixbuf, 0, 0, scale->to_width,
+ scale->to_height, 0, 0,
+ (double) scale->to_width / scale->from_width,
+ (double) scale->to_height / scale->from_height, scale->gdk_method);
+
+ dest_pixbuf = gdk_pixbuf_scale_simple
+ (src_pixbuf, scale->to_width, scale->to_height, scale->gdk_method);
+
+ g_object_unref (src_pixbuf);
+ g_object_unref (dest_pixbuf);
+}
+
+static void
+gst_pixbufscale_chain (GstPad * pad, GstData * _data)
+{
+ GstBuffer *buf = GST_BUFFER (_data);
+ GstPixbufScale *pixbufscale;
+ guchar *data;
+ gulong size;
+ GstBuffer *outbuf;
+
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_PAD (pad));
+ g_return_if_fail (buf != NULL);
+
+ pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
+ g_return_if_fail (pixbufscale->inited);
+
+ data = GST_BUFFER_DATA (buf);
+ size = GST_BUFFER_SIZE (buf);
+
+ if (pixbufscale->passthru) {
+ GST_LOG_OBJECT (pixbufscale, "passing through buffer of %ld bytes in '%s'",
+ size, GST_OBJECT_NAME (pixbufscale));
+ gst_pad_push (pixbufscale->srcpad, GST_DATA (buf));
+ return;
+ }
+
+ GST_LOG_OBJECT (pixbufscale, "got buffer of %ld bytes in '%s'", size,
+ GST_OBJECT_NAME (pixbufscale));
+ GST_LOG_OBJECT (pixbufscale,
+ "size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
+ size, pixbufscale->from_width, pixbufscale->from_height,
+ pixbufscale->to_width, pixbufscale->to_height, size,
+ pixbufscale->from_buf_size, pixbufscale->to_buf_size);
+
+ g_return_if_fail (size == pixbufscale->from_buf_size);
+
+ outbuf = gst_pad_alloc_buffer (pixbufscale->srcpad,
+ GST_BUFFER_OFFSET_NONE, pixbufscale->to_buf_size);
+
+ GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+
+ pixbufscale_scale (pixbufscale, GST_BUFFER_DATA (outbuf), data);
+
+ GST_DEBUG_OBJECT (pixbufscale, "pushing buffer of %d bytes in '%s'",
+ GST_BUFFER_SIZE (outbuf), GST_OBJECT_NAME (pixbufscale));
+
+ gst_pad_push (pixbufscale->srcpad, GST_DATA (outbuf));
+
+ gst_buffer_unref (buf);
+}
+
+static void
+gst_pixbufscale_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstPixbufScale *src;
+
+ g_return_if_fail (GST_IS_PIXBUFSCALE (object));
+ src = GST_PIXBUFSCALE (object);
+
+ switch (prop_id) {
+ case ARG_METHOD:
+ src->method = g_value_get_enum (value);
+ switch (src->method) {
+ case GST_PIXBUFSCALE_NEAREST:
+ src->gdk_method = GDK_INTERP_NEAREST;
+ break;
+ case GST_PIXBUFSCALE_TILES:
+ src->gdk_method = GDK_INTERP_TILES;
+ break;
+ case GST_PIXBUFSCALE_BILINEAR:
+ src->gdk_method = GDK_INTERP_BILINEAR;
+ break;
+ case GST_PIXBUFSCALE_HYPER:
+ src->gdk_method = GDK_INTERP_HYPER;
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_pixbufscale_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstPixbufScale *src;
+
+ g_return_if_fail (GST_IS_PIXBUFSCALE (object));
+ src = GST_PIXBUFSCALE (object);
+
+ switch (prop_id) {
+ case ARG_METHOD:
+ g_value_set_enum (value, src->method);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+gboolean
+pixbufscale_init (GstPlugin * plugin)
+{
+ if (!gst_element_register (plugin, "pixbufscale", GST_RANK_NONE,
+ GST_TYPE_PIXBUFSCALE))
+ return FALSE;
+
+ GST_DEBUG_CATEGORY_INIT (pixbufscale_debug, "pixbufscale", 0,
+ "pixbufscale element");
+
+ return TRUE;
+}
projects / platform / upstream / gst-plugins-good.git / commitdiff