build: Fix pkg-config usage

We shouldn't be concatenating outputs from pkg-config, it ends up
listing libraries twice and making a mess.

This commit also cleans up the dependencies for the thumbnailer,
audio preview and nautilus tabs, as they don't need clutter for
example.

https://bugzilla.gnome.org/show_bug.cgi?id=679461

1 files changed, 225 insertions, 0 deletions

diff --git a/src/gst/totem-gst-pixbuf-helpers.c b/src/gst/totem-gst-pixbuf-helpers.c
new file mode 100644
index 000000000..54ca32522
--- /dev/null
+++ b/src/gst/totem-gst-pixbuf-helpers.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright (C) 2003-2007 the GStreamer project
+ *      Julien Moutte <julien@moutte.net>
+ *      Ronald Bultje <rbultje@ronald.bitfreak.net>
+ * Copyright (C) 2005-2008 Tim-Philipp Müller <tim centricular net>
+ * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ * Copyright © 2009 Christian Persch
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
+ *
+ * The Totem project hereby grant permission for non-gpl compatible GStreamer
+ * plugins to be used and distributed together with GStreamer and Totem. This
+ * permission is above and beyond the permissions granted by the GPL license
+ * Totem is covered by.
+ *
+ * Monday 7th February 2005: Christian Schaller: Add exception clause.
+ * See license_change file for details.
+ *
+ */
+
+#include "totem-gst-pixbuf-helpers.h"
+
+#include <gst/tag/tag.h>
+#include <gst/video/video-format.h>
+
+static void
+destroy_pixbuf (guchar *pix, gpointer data)
+{
+  gst_sample_unref (GST_SAMPLE (data));
+}
+
+GdkPixbuf *
+totem_gst_playbin_get_frame (GstElement *play)
+{
+  GstStructure *s;
+  GstSample *sample = NULL;
+  GdkPixbuf *pixbuf;
+  GstCaps *to_caps, *sample_caps;
+  gint outwidth = 0;
+  gint outheight = 0;
+  GstMemory *memory;
+  GstMapInfo info;
+
+  g_return_val_if_fail (play != NULL, NULL);
+  g_return_val_if_fail (GST_IS_ELEMENT (play), NULL);
+
+  /* our desired output format (RGB24) */
+  to_caps = gst_caps_new_simple ("video/x-raw",
+      "format", G_TYPE_STRING, "RGB",
+      /* Note: we don't ask for a specific width/height here, so that
+       * videoscale can adjust dimensions from a non-1/1 pixel aspect
+       * ratio to a 1/1 pixel-aspect-ratio. We also don't ask for a
+       * specific framerate, because the input framerate won't
+       * necessarily match the output framerate if there's a deinterlacer
+       * in the pipeline. */
+      "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
+      NULL);
+
+  /* get frame */
+  g_signal_emit_by_name (play, "convert-sample", to_caps, &sample);
+  gst_caps_unref (to_caps);
+
+  if (!sample) {
+    GST_DEBUG ("Could not take screenshot: %s",
+        "failed to retrieve or convert video frame");
+    g_warning ("Could not take screenshot: %s",
+        "failed to retrieve or convert video frame");
+    return NULL;
+  }
+
+  sample_caps = gst_sample_get_caps (sample);
+  if (!sample_caps) {
+    GST_DEBUG ("Could not take screenshot: %s", "no caps on output buffer");
+    g_warning ("Could not take screenshot: %s", "no caps on output buffer");
+    return NULL;
+  }
+
+  GST_DEBUG ("frame caps: %" GST_PTR_FORMAT, sample_caps);
+
+  s = gst_caps_get_structure (sample_caps, 0);
+  gst_structure_get_int (s, "width", &outwidth);
+  gst_structure_get_int (s, "height", &outheight);
+  if (outwidth <= 0 || outheight <= 0)
+    goto done;
+
+  memory = gst_buffer_get_memory (gst_sample_get_buffer (sample), 0);
+  gst_memory_map (memory, &info, GST_MAP_READ);
+
+  /* create pixbuf from that - use our own destroy function */
+  pixbuf = gdk_pixbuf_new_from_data (info.data,
+      GDK_COLORSPACE_RGB, FALSE, 8, outwidth, outheight,
+      GST_ROUND_UP_4 (outwidth * 3), destroy_pixbuf, sample);
+
+  gst_memory_unmap (memory, &info);
+
+done:
+  if (!pixbuf) {
+    GST_DEBUG ("Could not take screenshot: %s", "could not create pixbuf");
+    g_warning ("Could not take screenshot: %s", "could not create pixbuf");
+    gst_sample_unref (sample);
+  }
+
+  return pixbuf;
+}
+
+static GdkPixbuf *
+totem_gst_buffer_to_pixbuf (GstBuffer *buffer)
+{
+  GdkPixbufLoader *loader;
+  GdkPixbuf *pixbuf = NULL;
+  GError *err = NULL;
+  GstMemory *memory;
+  GstMapInfo info;
+
+  memory = gst_buffer_get_memory (buffer, 0);
+  if (!memory) {
+    GST_WARNING("could not get memory for buffer");
+    return NULL;
+  }
+
+  if (!gst_memory_map (memory, &info, GST_MAP_READ)) {
+    GST_WARNING("could not map memory buffer");
+    return NULL;
+  }
+
+  loader = gdk_pixbuf_loader_new ();
+
+  if (gdk_pixbuf_loader_write (loader, info.data, info.size, &err) &&
+      gdk_pixbuf_loader_close (loader, &err)) {
+    pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
+    if (pixbuf)
+      g_object_ref (pixbuf);
+  } else {
+    GST_WARNING("could not convert tag image to pixbuf: %s", err->message);
+    g_error_free (err);
+  }
+
+  g_object_unref (loader);
+
+  gst_memory_unmap (memory, &info);
+
+  return pixbuf;
+}
+
+static const GValue *
+totem_gst_tag_list_get_cover_real (GstTagList *tag_list)
+{
+  const GValue *cover_value = NULL;
+  guint i;
+
+  for (i = 0; ; i++) {
+    const GValue *value;
+    GstSample *sample;
+    const GstStructure *caps_struct;
+    int type;
+
+    value = gst_tag_list_get_value_index (tag_list,
+					  GST_TAG_IMAGE,
+					  i);
+    if (value == NULL)
+      break;
+
+
+    sample = gst_value_get_sample (value);
+    caps_struct = gst_sample_get_info (sample);
+    gst_structure_get_enum (caps_struct,
+			    "image-type",
+			    GST_TYPE_TAG_IMAGE_TYPE,
+			    &type);
+    if (type == GST_TAG_IMAGE_TYPE_UNDEFINED) {
+      if (cover_value == NULL)
+        cover_value = value;
+    } else if (type == GST_TAG_IMAGE_TYPE_FRONT_COVER) {
+      cover_value = value;
+      break;
+    }
+  }
+
+  return cover_value;
+}
+
+GdkPixbuf *
+totem_gst_tag_list_get_cover (GstTagList *tag_list)
+{
+  const GValue *cover_value;
+
+  g_return_val_if_fail (tag_list != NULL, FALSE);
+
+  cover_value = totem_gst_tag_list_get_cover_real (tag_list);
+  /* Fallback to preview */
+  if (!cover_value) {
+    cover_value = gst_tag_list_get_value_index (tag_list,
+						GST_TAG_PREVIEW_IMAGE,
+						0);
+  }
+
+  if (cover_value) {
+    GstBuffer *buffer;
+    GstSample *sample;
+    GdkPixbuf *pixbuf;
+
+    sample = gst_value_get_sample (cover_value);
+    buffer = gst_sample_get_buffer (sample);
+    pixbuf = totem_gst_buffer_to_pixbuf (buffer);
+    return pixbuf;
+  }
+
+  return NULL;
+}
+
+/*
+ * vim: sw=2 ts=8 cindent noai bs=2
+ */