/* * gstgdkpixbuf.c * GStreamer * Copyright (C) 1999-2001 Erik Walthinsen * Copyright (C) 2003 David A. Schleef * * 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 #include #include "gstgdkpixbuf.h" static GstElementDetails plugin_details = { "GdkPixbuf image decoder", "Codec/Decoder/Image", "Decodes images in a video stream using GdkPixbuf", "David A. Schleef ", }; /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_SILENT }; static GstStaticPadTemplate gst_gdk_pixbuf_sink_template = GST_STATIC_PAD_TEMPLATE ( "sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ( "image/png; " "image/jpeg; " "image/gif; " "image/x-icon; " "application/x-navi-animation; " "image/x-cmu-raster; " "image/x-sun-raster; " "image/x-pixmap; " "image/tiff; " "image/x-portable-anymap; " "image/x-portable-bitmap; " "image/x-portable-graymap; " "image/x-portable-pixmap; " "image/bmp; " "image/x-bmp; " "image/x-MS-bmp; " "image/vnd.wap.wbmp; " "image/x-bitmap; " "image/x-tga") ); static GstStaticPadTemplate gst_gdk_pixbuf_src_template = GST_STATIC_PAD_TEMPLATE ( "src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB) ); static void gst_gdk_pixbuf_base_init (gpointer g_class); static void gst_gdk_pixbuf_class_init (GstGdkPixbufClass *klass); static void gst_gdk_pixbuf_init (GstGdkPixbuf *filter); static void gst_gdk_pixbuf_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gst_gdk_pixbuf_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gst_gdk_pixbuf_chain (GstPad *pad, GstData *_data); static void gst_gdk_pixbuf_type_find (GstTypeFind *tf, gpointer ignore); static GstElementClass *parent_class = NULL; static GstPadLinkReturn gst_gdk_pixbuf_sink_link (GstPad *pad, const GstCaps *caps) { GstGdkPixbuf *filter; filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad)); g_return_val_if_fail (filter != NULL, GST_PAD_LINK_REFUSED); g_return_val_if_fail (GST_IS_GDK_PIXBUF (filter), GST_PAD_LINK_REFUSED); filter->framerate = 1.0; gst_structure_get_double (gst_caps_get_structure (caps, 0), "framerate", &filter->framerate); return GST_PAD_LINK_OK; } #if GDK_PIXBUF_MAJOR == 2 && GDK_PIXBUF_MINOR < 2 /* gdk-pixbuf prior to 2.2 didn't have gdk_pixbuf_get_formats(). * These are just the formats that gdk-pixbuf is known to support. * But maybe not -- it may have been compiled without an external * library. */ static GstCaps *gst_gdk_pixbuf_get_capslist(void) { return gst_caps_copy (gst_static_caps_get ( &gst_gdk_pixbuf_sink_template.static_caps)); } #else static GstCaps *gst_gdk_pixbuf_get_capslist(void) { GSList *slist; GSList *slist0; GdkPixbufFormat *pixbuf_format; char **mimetypes; char **mimetype; GstCaps *capslist = NULL; capslist = gst_caps_new_empty (); slist0 = gdk_pixbuf_get_formats(); for(slist = slist0;slist;slist=g_slist_next(slist)){ pixbuf_format = slist->data; mimetypes = gdk_pixbuf_format_get_mime_types(pixbuf_format); for(mimetype = mimetypes; *mimetype; mimetype++){ gst_caps_append_structure (capslist, gst_structure_new (*mimetype,NULL)); } g_free(mimetypes); } g_slist_free(slist0); return capslist; } #endif static GstCaps *gst_gdk_pixbuf_sink_getcaps(GstPad *pad) { GstGdkPixbuf *filter; filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad)); g_return_val_if_fail (filter != NULL, NULL); g_return_val_if_fail (GST_IS_GDK_PIXBUF (filter), NULL); return gst_gdk_pixbuf_get_capslist(); } GType gst_gdk_pixbuf_get_type (void) { static GType plugin_type = 0; if (!plugin_type) { static const GTypeInfo plugin_info = { sizeof (GstGdkPixbufClass), gst_gdk_pixbuf_base_init, NULL, (GClassInitFunc) gst_gdk_pixbuf_class_init, NULL, NULL, sizeof (GstGdkPixbuf), 0, (GInstanceInitFunc) gst_gdk_pixbuf_init, }; plugin_type = g_type_register_static (GST_TYPE_ELEMENT, "GstGdkPixbuf", &plugin_info, 0); } return plugin_type; } static void gst_gdk_pixbuf_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_gdk_pixbuf_src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get( &gst_gdk_pixbuf_sink_template)); gst_element_class_set_details (element_class, &plugin_details); } /* initialize the plugin's class */ static void gst_gdk_pixbuf_class_init (GstGdkPixbufClass *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*) klass; gstelement_class = (GstElementClass*) klass; parent_class = g_type_class_ref (GST_TYPE_ELEMENT); g_object_class_install_property (gobject_class, ARG_SILENT, g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?", FALSE, G_PARAM_READWRITE)); gobject_class->set_property = gst_gdk_pixbuf_set_property; gobject_class->get_property = gst_gdk_pixbuf_get_property; } static void gst_gdk_pixbuf_init (GstGdkPixbuf *filter) { filter->sinkpad = gst_pad_new_from_template ( gst_static_pad_template_get( &gst_gdk_pixbuf_sink_template), "sink"); gst_pad_set_link_function (filter->sinkpad, gst_gdk_pixbuf_sink_link); gst_pad_set_getcaps_function (filter->sinkpad, gst_gdk_pixbuf_sink_getcaps); filter->srcpad = gst_pad_new_from_template ( gst_static_pad_template_get( &gst_gdk_pixbuf_src_template), "src"); gst_pad_use_explicit_caps (filter->srcpad); gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); gst_pad_set_chain_function (filter->sinkpad, gst_gdk_pixbuf_chain); GST_FLAG_SET (GST_ELEMENT (filter), GST_ELEMENT_EVENT_AWARE); } static void gst_gdk_pixbuf_chain (GstPad *pad, GstData *_data) { GstBuffer *buf = GST_BUFFER (_data); GstGdkPixbuf *filter; GError *error = NULL; gboolean push_buffer = FALSE; gboolean dump_buffer = FALSE; gboolean got_eos = FALSE; GST_DEBUG ("gst_gdk_pixbuf_chain"); g_return_if_fail (GST_IS_PAD (pad)); g_return_if_fail (buf != NULL); filter = GST_GDK_PIXBUF (GST_OBJECT_PARENT (pad)); g_return_if_fail (GST_IS_GDK_PIXBUF (filter)); if (GST_IS_EVENT (_data)) { GstEvent *event = GST_EVENT (buf); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_EOS: push_buffer = TRUE; got_eos = TRUE; break; case GST_EVENT_DISCONTINUOUS: dump_buffer = TRUE; break; default: gst_pad_event_default (pad, event); return; } } if (filter->last_timestamp != GST_BUFFER_TIMESTAMP (buf)) { push_buffer = TRUE; } if (push_buffer) { if (filter->pixbuf_loader != NULL) { GstBuffer *outbuf; GdkPixbuf *pixbuf; GError *error = NULL; if (!gdk_pixbuf_loader_close (filter->pixbuf_loader, &error)) { GST_ELEMENT_ERROR (filter, LIBRARY, SHUTDOWN, (NULL), (error->message)); g_error_free (error); return; } pixbuf = gdk_pixbuf_loader_get_pixbuf (filter->pixbuf_loader); if(filter->image_size == 0){ GstCaps *caps; filter->width = gdk_pixbuf_get_width(pixbuf); filter->height = gdk_pixbuf_get_height(pixbuf); filter->rowstride = gdk_pixbuf_get_rowstride(pixbuf); filter->image_size = filter->rowstride * filter->height; caps = gst_caps_copy (gst_pad_get_pad_template_caps (filter->srcpad)); gst_caps_set_simple (caps, "width", G_TYPE_INT, filter->width, "height", G_TYPE_INT, filter->height, "framerate", G_TYPE_DOUBLE, filter->framerate, NULL); gst_pad_set_explicit_caps (filter->srcpad, caps); } outbuf = gst_pad_alloc_buffer (filter->srcpad, GST_BUFFER_OFFSET_NONE, filter->image_size); GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf); GST_BUFFER_DURATION(outbuf) = GST_BUFFER_DURATION(buf); memcpy(GST_BUFFER_DATA(outbuf), gdk_pixbuf_get_pixels(pixbuf), filter->image_size); gst_pad_push (filter->srcpad, GST_DATA (outbuf)); g_object_unref(G_OBJECT(filter->pixbuf_loader)); filter->pixbuf_loader = NULL; dump_buffer = FALSE; } } if (dump_buffer) { if (filter->pixbuf_loader != NULL) { gdk_pixbuf_loader_close (filter->pixbuf_loader, NULL); g_object_unref(G_OBJECT(filter->pixbuf_loader)); filter->pixbuf_loader = NULL; } } if (GST_IS_BUFFER (_data)) { if (filter->pixbuf_loader == NULL) { filter->pixbuf_loader = gdk_pixbuf_loader_new(); filter->last_timestamp = GST_BUFFER_TIMESTAMP (buf); } gdk_pixbuf_loader_write(filter->pixbuf_loader, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf), &error); gst_buffer_unref (buf); } if (got_eos) { gst_pad_event_default (pad, GST_EVENT (_data)); } } static void gst_gdk_pixbuf_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstGdkPixbuf *filter; g_return_if_fail (GST_IS_GDK_PIXBUF (object)); filter = GST_GDK_PIXBUF (object); switch (prop_id) { case ARG_SILENT: //filter->silent = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gdk_pixbuf_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GstGdkPixbuf *filter; g_return_if_fail (GST_IS_GDK_PIXBUF (object)); filter = GST_GDK_PIXBUF (object); switch (prop_id) { case ARG_SILENT: //g_value_set_boolean (value, filter->silent); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } #define GST_GDK_PIXBUF_TYPE_FIND_SIZE 1024 static void gst_gdk_pixbuf_type_find (GstTypeFind *tf, gpointer ignore) { guint8 *data; GdkPixbufLoader *pixbuf_loader; GdkPixbufFormat *format; data = gst_type_find_peek (tf, 0, GST_GDK_PIXBUF_TYPE_FIND_SIZE); if (data == NULL) return; GST_DEBUG ("creating new loader"); pixbuf_loader = gdk_pixbuf_loader_new(); gdk_pixbuf_loader_write (pixbuf_loader, data, GST_GDK_PIXBUF_TYPE_FIND_SIZE, NULL); format = gdk_pixbuf_loader_get_format (pixbuf_loader); if (format != NULL) { GstCaps *caps; gchar **p; gchar **mlist = gdk_pixbuf_format_get_mime_types (format); for (p = mlist; *p; ++p) { GST_DEBUG ("suggesting mime type %s", *p); caps = gst_caps_new_simple (*p, NULL); gst_type_find_suggest (tf, GST_TYPE_FIND_MINIMUM, caps); gst_caps_free (caps); } g_strfreev (mlist); } GST_DEBUG ("closing pixbuf loader, hope it doesn't hang ..."); /* librsvg 2.4.x has a bug where it triggers an endless loop in trying to close a gzip that's not an svg; fixed upstream but no good way to work around it */ gdk_pixbuf_loader_close (pixbuf_loader, NULL); GST_DEBUG ("closed pixbuf loader"); g_object_unref (G_OBJECT (pixbuf_loader)); } /* entry point to initialize the plug-in * initialize the plug-in itself * register the element factories and pad templates * register the features */ static gboolean plugin_init (GstPlugin *plugin) { GstCaps *caps; if (!gst_element_register (plugin, "gdkpixbufdec", GST_RANK_NONE, GST_TYPE_GDK_PIXBUF)) return FALSE; caps = GST_CAPS_ANY; gst_type_find_register (plugin, "image/*", GST_RANK_MARGINAL, gst_gdk_pixbuf_type_find, NULL, caps, NULL); gst_caps_free (caps); /* plugin initialisation succeeded */ return TRUE; } /* this is the structure that gst-register looks for * so keep the name plugin_desc, or you cannot get your plug-in registered */ GST_PLUGIN_DEFINE ( GST_VERSION_MAJOR, GST_VERSION_MINOR, "gdkpixbuf", "GDK Pixbuf decoder", plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)