/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) <2004> Jan Schmidt * * 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 #include #include /* 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 \nWim Taymans "); /* 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, "gdkpixbufscale", GST_RANK_NONE, GST_TYPE_PIXBUFSCALE)) return FALSE; GST_DEBUG_CATEGORY_INIT (pixbufscale_debug, "gdkpixbufscale", 0, "pixbufscale element"); return TRUE; }