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436 lines
13 KiB
C
436 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 <string.h>
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#include "gstgdkpixbuf.h"
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static GstElementDetails plugin_details = {
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"GdkPixbuf image decoder",
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"Codec/Image",
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"LGPL",
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"Decodes images in a video stream using GdkPixbuf",
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VERSION,
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"David A. Schleef <ds@schleef.org>",
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"(C) 2002, 2003"
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};
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/* Filter signals and args */
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enum {
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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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ARG_0,
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ARG_SILENT
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};
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GST_PAD_TEMPLATE_FACTORY (gst_gdk_pixbuf_sink_factory,
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/png", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/jpeg", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/gif", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-icon", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "application/x-navi-animation", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-cmu-raster", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-sun-raster", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-pixmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/tiff", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-anymap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-bitmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-graymap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-pixmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-MS-bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/vnd.wap.wbmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-bitmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-tga", NULL)
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);
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GST_PAD_TEMPLATE_FACTORY (gst_gdk_pixbuf_src_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW(
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"gdk_pixbuf_src",
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"video/x-raw-rgb",
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"width", GST_PROPS_INT_RANGE(1,INT_MAX),
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"height", GST_PROPS_INT_RANGE(1,INT_MAX),
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/* well, it's needed for connectivity but this
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* doesn't really make sense... */
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"framerate", GST_PROPS_FLOAT_RANGE(0, G_MAXFLOAT),
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"bpp", GST_PROPS_INT(32),
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"depth", GST_PROPS_INT(24),
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"endianness", GST_PROPS_INT(G_BIG_ENDIAN),
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"red_mask", GST_PROPS_INT(0x00ff0000),
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"green_mask", GST_PROPS_INT(0x0000ff00),
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"blue_mask", GST_PROPS_INT(0x000000ff)
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)
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);
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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,
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GParamSpec *pspec);
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static void gst_gdk_pixbuf_get_property(GObject *object, guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gst_gdk_pixbuf_chain (GstPad *pad, GstData *_data);
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static void gst_gdk_pixbuf_type_find (GstTypeFind *tf, gpointer ignore);
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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, 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),
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GST_PAD_LINK_REFUSED);
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if (GST_CAPS_IS_FIXED (caps))
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{
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return GST_PAD_LINK_OK;
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}
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return GST_PAD_LINK_DELAYED;
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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 *gst_gdk_pixbuf_get_capslist(void)
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{
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GstCaps *capslist;
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capslist = gst_caps_chain(
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/png", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/jpeg", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/gif", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-icon", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "application/x-navi-animation", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-cmu-raster", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-sun-raster", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-pixmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/tiff", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-anymap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-bitmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-graymap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-portable-pixmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-MS-bmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/vnd.wap.wbmp", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-bitmap", NULL),
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GST_CAPS_NEW("gdk_pixbuf_sink", "image/x-tga", NULL),
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NULL);
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return capslist;
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}
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#else
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static GstCaps *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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static GstCaps *capslist = NULL;
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if(capslist==NULL){
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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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capslist = gst_caps_append(capslist, gst_caps_new("ack",*mimetype,NULL));
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}
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g_free(mimetypes);
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}
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gst_caps_ref(capslist);
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gst_caps_sink(capslist);
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g_slist_free(slist0);
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g_print("%s\n",gst_caps_to_string(capslist));
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}
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return capslist;
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}
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#endif
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static GstCaps *gst_gdk_pixbuf_sink_getcaps(GstPad *pad, 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, 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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{
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static const GTypeInfo plugin_info =
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{
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sizeof (GstGdkPixbufClass),
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NULL,
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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",
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&plugin_info, 0);
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}
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return plugin_type;
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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 = gst_pad_new_from_template (gst_gdk_pixbuf_sink_factory (),
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"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 = gst_pad_new_from_template (gst_gdk_pixbuf_src_factory (),
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"src");
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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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}
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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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GdkPixbufLoader *pixbuf_loader;
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GdkPixbuf *pixbuf;
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GstBuffer *outbuf;
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GError *error = NULL;
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g_print("gst_gdk_pixbuf_chain\n");
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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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pixbuf_loader = gdk_pixbuf_loader_new();
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//pixbuf_loader = gdk_pixbuf_loader_new_with_type("gif");
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gdk_pixbuf_loader_write(pixbuf_loader, GST_BUFFER_DATA(buf),
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GST_BUFFER_SIZE(buf), &error);
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gdk_pixbuf_loader_close(pixbuf_loader, &error);
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pixbuf = gdk_pixbuf_loader_get_pixbuf(pixbuf_loader);
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g_print("width=%d height=%d\n", gdk_pixbuf_get_width(pixbuf),
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gdk_pixbuf_get_height(pixbuf));
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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_pad_get_caps(filter->srcpad);
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gst_caps_set(caps, "width", GST_PROPS_INT(filter->width));
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gst_caps_set(caps, "height", GST_PROPS_INT(filter->height));
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gst_caps_set(caps, "framerate", GST_PROPS_FLOAT(0.));
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gst_pad_try_set_caps(filter->srcpad, caps);
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}
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outbuf = gst_buffer_new();
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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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GST_BUFFER_SIZE(outbuf) = filter->image_size;
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GST_BUFFER_DATA(outbuf) = g_malloc(filter->image_size);
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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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g_object_unref(G_OBJECT(pixbuf_loader));
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gst_pad_push (filter->srcpad, GST_DATA (outbuf));
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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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{
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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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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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GError *error = NULL;
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data = gst_type_find_peek (tf, 0, GST_GDK_PIXBUF_TYPE_FIND_SIZE);
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if (data == NULL) return;
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GST_DEBUG ("gst_gdk_pixbuf_type_find");
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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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&error);
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format = gdk_pixbuf_loader_get_format (pixbuf_loader);
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if (format != NULL) {
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gchar **mlist = gdk_pixbuf_format_get_mime_types(format);
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gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
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gst_caps_new ("gdk_pixbuf_type_find", mlist[0], NULL));
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}
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g_object_unref (G_OBJECT (pixbuf_loader));
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}
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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 (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *factory;
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factory = gst_element_factory_new ("gdkpixbufdec", GST_TYPE_GDK_PIXBUF,
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&plugin_details);
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g_return_val_if_fail (factory != NULL, FALSE);
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gst_element_factory_add_pad_template (factory,
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gst_gdk_pixbuf_src_factory ());
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gst_element_factory_add_pad_template (factory,
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gst_gdk_pixbuf_sink_factory ());
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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gst_type_find_factory_register (plugin, "image/*", GST_ELEMENT_RANK_MARGINAL,
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gst_gdk_pixbuf_type_find, NULL, GST_CAPS_ANY, NULL);
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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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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"gdkpixbuf",
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plugin_init
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};
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