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6cc1c73d2b
Original commit message from CVS: don't mix tabs and spaces
471 lines
13 KiB
C
471 lines
13 KiB
C
/*
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* gstgdkpixbuf.c
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* GStreamer
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* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2003 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gst/video/video.h>
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#include <string.h>
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#include "gstgdkpixbuf.h"
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GST_DEBUG_CATEGORY_STATIC (gst_gdk_pixbuf_debug);
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#define GST_CAT_DEFAULT gst_gdk_pixbuf_debug
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static GstElementDetails plugin_details = {
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"GdkPixbuf image decoder",
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"Codec/Decoder/Image",
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"Decodes images in a video stream using GdkPixbuf",
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"David A. Schleef <ds@schleef.org>",
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};
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/* Filter signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_SILENT
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};
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static GstStaticPadTemplate gst_gdk_pixbuf_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("image/png; "
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"image/jpeg; "
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"image/gif; "
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"image/x-icon; "
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"application/x-navi-animation; "
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"image/x-cmu-raster; "
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"image/x-sun-raster; "
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"image/x-pixmap; "
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"image/tiff; "
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"image/x-portable-anymap; "
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"image/x-portable-bitmap; "
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"image/x-portable-graymap; "
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"image/x-portable-pixmap; "
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"image/bmp; "
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"image/x-bmp; "
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"image/x-MS-bmp; "
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"image/vnd.wap.wbmp; " "image/x-bitmap; " "image/x-tga")
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);
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static GstStaticPadTemplate gst_gdk_pixbuf_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
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);
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static void gst_gdk_pixbuf_base_init (gpointer g_class);
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static void gst_gdk_pixbuf_class_init (GstGdkPixbufClass * klass);
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static void gst_gdk_pixbuf_init (GstGdkPixbuf * filter);
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static void gst_gdk_pixbuf_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gdk_pixbuf_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gdk_pixbuf_chain (GstPad * pad, GstData * _data);
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#ifdef enable_typefind
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static void gst_gdk_pixbuf_type_find (GstTypeFind * tf, gpointer ignore);
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#endif
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static GstElementClass *parent_class = NULL;
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static GstPadLinkReturn
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gst_gdk_pixbuf_sink_link (GstPad * pad, const GstCaps * caps)
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{
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GstGdkPixbuf *filter;
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filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad));
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g_return_val_if_fail (filter != NULL, GST_PAD_LINK_REFUSED);
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g_return_val_if_fail (GST_IS_GDK_PIXBUF (filter), GST_PAD_LINK_REFUSED);
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filter->framerate = 1.0;
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gst_structure_get_double (gst_caps_get_structure (caps, 0), "framerate",
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&filter->framerate);
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return GST_PAD_LINK_OK;
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}
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#if GDK_PIXBUF_MAJOR == 2 && GDK_PIXBUF_MINOR < 2
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/* gdk-pixbuf prior to 2.2 didn't have gdk_pixbuf_get_formats().
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* These are just the formats that gdk-pixbuf is known to support.
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* But maybe not -- it may have been compiled without an external
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* library. */
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static GstCaps *
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gst_gdk_pixbuf_get_capslist (void)
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{
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return gst_caps_copy (gst_static_caps_get (&gst_gdk_pixbuf_sink_template.
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static_caps));
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}
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#else
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static GstCaps *
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gst_gdk_pixbuf_get_capslist (void)
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{
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GSList *slist;
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GSList *slist0;
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GdkPixbufFormat *pixbuf_format;
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char **mimetypes;
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char **mimetype;
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GstCaps *capslist = NULL;
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capslist = gst_caps_new_empty ();
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slist0 = gdk_pixbuf_get_formats ();
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for (slist = slist0; slist; slist = g_slist_next (slist)) {
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pixbuf_format = slist->data;
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mimetypes = gdk_pixbuf_format_get_mime_types (pixbuf_format);
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for (mimetype = mimetypes; *mimetype; mimetype++) {
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gst_caps_append_structure (capslist, gst_structure_new (*mimetype, NULL));
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}
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g_free (mimetypes);
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}
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g_slist_free (slist0);
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return capslist;
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}
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#endif
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static GstCaps *
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gst_gdk_pixbuf_sink_getcaps (GstPad * pad)
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{
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GstGdkPixbuf *filter;
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filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad));
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g_return_val_if_fail (filter != NULL, NULL);
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g_return_val_if_fail (GST_IS_GDK_PIXBUF (filter), NULL);
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return gst_gdk_pixbuf_get_capslist ();
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}
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GType
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gst_gdk_pixbuf_get_type (void)
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{
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static GType plugin_type = 0;
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if (!plugin_type) {
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static const GTypeInfo plugin_info = {
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sizeof (GstGdkPixbufClass),
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gst_gdk_pixbuf_base_init,
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NULL,
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(GClassInitFunc) gst_gdk_pixbuf_class_init,
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NULL,
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NULL,
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sizeof (GstGdkPixbuf),
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0,
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(GInstanceInitFunc) gst_gdk_pixbuf_init,
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};
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plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstGdkPixbuf", &plugin_info, 0);
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}
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return plugin_type;
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}
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static void
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gst_gdk_pixbuf_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_gdk_pixbuf_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_gdk_pixbuf_sink_template));
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gst_element_class_set_details (element_class, &plugin_details);
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}
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/* initialize the plugin's class */
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static void
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gst_gdk_pixbuf_class_init (GstGdkPixbufClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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g_object_class_install_property (gobject_class, ARG_SILENT,
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g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
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FALSE, G_PARAM_READWRITE));
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gobject_class->set_property = gst_gdk_pixbuf_set_property;
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gobject_class->get_property = gst_gdk_pixbuf_get_property;
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}
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static void
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gst_gdk_pixbuf_init (GstGdkPixbuf * filter)
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{
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filter->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_gdk_pixbuf_sink_template), "sink");
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gst_pad_set_link_function (filter->sinkpad, gst_gdk_pixbuf_sink_link);
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gst_pad_set_getcaps_function (filter->sinkpad, gst_gdk_pixbuf_sink_getcaps);
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filter->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_gdk_pixbuf_src_template), "src");
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gst_pad_use_explicit_caps (filter->srcpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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gst_pad_set_chain_function (filter->sinkpad, gst_gdk_pixbuf_chain);
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GST_FLAG_SET (GST_ELEMENT (filter), GST_ELEMENT_EVENT_AWARE);
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}
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static void
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gst_gdk_pixbuf_chain (GstPad * pad, GstData * _data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstGdkPixbuf *filter;
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GError *error = NULL;
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gboolean push_buffer = FALSE;
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gboolean dump_buffer = FALSE;
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gboolean got_eos = FALSE;
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GST_DEBUG ("gst_gdk_pixbuf_chain");
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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filter = GST_GDK_PIXBUF (GST_OBJECT_PARENT (pad));
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g_return_if_fail (GST_IS_GDK_PIXBUF (filter));
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if (GST_IS_EVENT (_data)) {
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GstEvent *event = GST_EVENT (buf);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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push_buffer = TRUE;
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got_eos = TRUE;
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break;
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case GST_EVENT_DISCONTINUOUS:
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dump_buffer = TRUE;
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break;
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default:
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gst_pad_event_default (pad, event);
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return;
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}
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}
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if (filter->last_timestamp != GST_BUFFER_TIMESTAMP (buf)) {
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push_buffer = TRUE;
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}
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if (push_buffer) {
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if (filter->pixbuf_loader != NULL) {
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GstBuffer *outbuf;
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GdkPixbuf *pixbuf;
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GError *error = NULL;
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if (!gdk_pixbuf_loader_close (filter->pixbuf_loader, &error)) {
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GST_ELEMENT_ERROR (filter, LIBRARY, SHUTDOWN, (NULL), (error->message));
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g_error_free (error);
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return;
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}
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pixbuf = gdk_pixbuf_loader_get_pixbuf (filter->pixbuf_loader);
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if (filter->image_size == 0) {
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GstCaps *caps;
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filter->width = gdk_pixbuf_get_width (pixbuf);
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filter->height = gdk_pixbuf_get_height (pixbuf);
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filter->rowstride = gdk_pixbuf_get_rowstride (pixbuf);
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filter->image_size = filter->rowstride * filter->height;
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (filter->srcpad));
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gst_caps_set_simple (caps,
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"width", G_TYPE_INT, filter->width,
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"height", G_TYPE_INT, filter->height,
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"framerate", G_TYPE_DOUBLE, filter->framerate, NULL);
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gst_pad_set_explicit_caps (filter->srcpad, caps);
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}
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outbuf = gst_pad_alloc_buffer (filter->srcpad, GST_BUFFER_OFFSET_NONE,
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filter->image_size);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
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memcpy (GST_BUFFER_DATA (outbuf), gdk_pixbuf_get_pixels (pixbuf),
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filter->image_size);
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gst_pad_push (filter->srcpad, GST_DATA (outbuf));
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g_object_unref (G_OBJECT (filter->pixbuf_loader));
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filter->pixbuf_loader = NULL;
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dump_buffer = FALSE;
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}
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}
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if (dump_buffer) {
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if (filter->pixbuf_loader != NULL) {
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gdk_pixbuf_loader_close (filter->pixbuf_loader, NULL);
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g_object_unref (G_OBJECT (filter->pixbuf_loader));
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filter->pixbuf_loader = NULL;
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}
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}
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if (GST_IS_BUFFER (_data)) {
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if (filter->pixbuf_loader == NULL) {
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filter->pixbuf_loader = gdk_pixbuf_loader_new ();
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filter->last_timestamp = GST_BUFFER_TIMESTAMP (buf);
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}
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gdk_pixbuf_loader_write (filter->pixbuf_loader, GST_BUFFER_DATA (buf),
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GST_BUFFER_SIZE (buf), &error);
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gst_buffer_unref (buf);
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}
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if (got_eos) {
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gst_pad_event_default (pad, GST_EVENT (_data));
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}
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}
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static void
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gst_gdk_pixbuf_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstGdkPixbuf *filter;
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g_return_if_fail (GST_IS_GDK_PIXBUF (object));
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filter = GST_GDK_PIXBUF (object);
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switch (prop_id) {
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case ARG_SILENT:
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//filter->silent = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gdk_pixbuf_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstGdkPixbuf *filter;
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g_return_if_fail (GST_IS_GDK_PIXBUF (object));
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filter = GST_GDK_PIXBUF (object);
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switch (prop_id) {
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case ARG_SILENT:
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//g_value_set_boolean (value, filter->silent);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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#define GST_GDK_PIXBUF_TYPE_FIND_SIZE 1024
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#ifdef enable_typefind
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static void
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gst_gdk_pixbuf_type_find (GstTypeFind * tf, gpointer ignore)
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{
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guint8 *data;
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GdkPixbufLoader *pixbuf_loader;
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GdkPixbufFormat *format;
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data = gst_type_find_peek (tf, 0, GST_GDK_PIXBUF_TYPE_FIND_SIZE);
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if (data == NULL)
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return;
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GST_DEBUG ("creating new loader");
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pixbuf_loader = gdk_pixbuf_loader_new ();
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gdk_pixbuf_loader_write (pixbuf_loader, data, GST_GDK_PIXBUF_TYPE_FIND_SIZE,
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NULL);
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format = gdk_pixbuf_loader_get_format (pixbuf_loader);
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if (format != NULL) {
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GstCaps *caps;
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gchar **p;
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gchar **mlist = gdk_pixbuf_format_get_mime_types (format);
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for (p = mlist; *p; ++p) {
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GST_DEBUG ("suggesting mime type %s", *p);
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caps = gst_caps_new_simple (*p, NULL);
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gst_type_find_suggest (tf, GST_TYPE_FIND_MINIMUM, caps);
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gst_caps_free (caps);
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}
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g_strfreev (mlist);
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}
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GST_DEBUG ("closing pixbuf loader, hope it doesn't hang ...");
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/* librsvg 2.4.x has a bug where it triggers an endless loop in trying
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to close a gzip that's not an svg; fixed upstream but no good way
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to work around it */
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gdk_pixbuf_loader_close (pixbuf_loader, NULL);
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GST_DEBUG ("closed pixbuf loader");
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g_object_unref (G_OBJECT (pixbuf_loader));
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}
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#endif
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/* entry point to initialize the plug-in
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* initialize the plug-in itself
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* register the element factories and pad templates
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* register the features
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*/
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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GST_DEBUG_CATEGORY_INIT (gst_gdk_pixbuf_debug, "gdkpixbuf", 0,
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"gdk pixbuf loader");
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if (!gst_element_register (plugin, "gdkpixbufdec", GST_RANK_NONE,
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GST_TYPE_GDK_PIXBUF))
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return FALSE;
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#ifdef enable_typefind
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gst_type_find_register (plugin, "image/*", GST_RANK_MARGINAL,
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gst_gdk_pixbuf_type_find, NULL, GST_CAPS_ANY, NULL);
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#endif
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/* plugin initialisation succeeded */
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return TRUE;
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}
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/* this is the structure that gst-register looks for
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* so keep the name plugin_desc, or you cannot get your plug-in registered */
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"gdkpixbuf",
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"GDK Pixbuf decoder", plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)
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