1 files changed, 203 insertions, 0 deletions
diff --git a/gst/debugutils/gstpushfilesrc.c b/gst/debugutils/gstpushfilesrc.c
new file mode 100644
index 0000000..435d185
--- /dev/null
+++ b/gst/debugutils/gstpushfilesrc.c
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+/* GStreamer Push File Source
+ * Copyright (C) <2007> Tim-Philipp Müller <tim centricular net>
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:element-pushfilesrc
+ * @see_also: filesrc
+ *
+ * This element is only useful for debugging purposes. It implements an URI
+ * protocol handler for the 'pushfile' protocol and behaves like a file source
+ * element that cannot be activated in pull-mode. This makes it very easy to
+ * debug demuxers or decoders that can operate both pull and push-based in
+ * connection with the playbin element (which creates a source based on the
+ * URI passed).
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch-1.0 -m playbin uri=pushfile:///home/you/some/file.ogg
+ * ]| This plays back the given file using playbin, with the demuxer operating
+ * push-based.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstpushfilesrc.h"
+
+#include <gst/gst.h>
+
+GST_DEBUG_CATEGORY_STATIC (pushfilesrc_debug);
+#define GST_CAT_DEFAULT pushfilesrc_debug
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+static void gst_push_file_src_uri_handler_init (gpointer g_iface,
+    gpointer iface_data);
+
+#define gst_push_file_src_parent_class parent_class
+G_DEFINE_TYPE_WITH_CODE (GstPushFileSrc, gst_push_file_src, GST_TYPE_BIN,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER,
+        gst_push_file_src_uri_handler_init));
+
+static void
+gst_push_file_src_dispose (GObject * obj)
+{
+  GstPushFileSrc *src = GST_PUSH_FILE_SRC (obj);
+
+  if (src->srcpad) {
+    gst_element_remove_pad (GST_ELEMENT (src), src->srcpad);
+    src->srcpad = NULL;
+  }
+  if (src->filesrc) {
+    gst_bin_remove (GST_BIN (src), src->filesrc);
+    src->filesrc = NULL;
+  }
+
+  G_OBJECT_CLASS (parent_class)->dispose (obj);
+}
+
+static void
+gst_push_file_src_class_init (GstPushFileSrcClass * g_class)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *element_class;
+
+  gobject_class = G_OBJECT_CLASS (g_class);
+  element_class = GST_ELEMENT_CLASS (g_class);
+
+  GST_DEBUG_CATEGORY_INIT (pushfilesrc_debug, "pushfilesrc", 0,
+      "pushfilesrc element");
+
+  gobject_class->dispose = gst_push_file_src_dispose;
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&srctemplate));
+
+  gst_element_class_set_static_metadata (element_class, "Push File Source",
+      "Testing",
+      "Implements pushfile:// URI-handler for push-based file access",
+      "Tim-Philipp Müller <tim centricular net>");
+}
+
+static gboolean
+gst_push_file_src_ghostpad_query (GstPad * pad, GstObject * parent,
+    GstQuery * query)
+{
+  gboolean res;
+
+  switch (GST_QUERY_TYPE (query)) {
+    case GST_QUERY_SCHEDULING:
+      gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
+      gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
+      res = TRUE;
+      break;
+    default:
+      res = gst_pad_query_default (pad, parent, query);
+      break;
+  }
+  return res;
+}
+
+static void
+gst_push_file_src_init (GstPushFileSrc * src)
+{
+  src->filesrc = gst_element_factory_make ("filesrc", "real-filesrc");
+  if (src->filesrc) {
+    GstPad *pad;
+
+    gst_bin_add (GST_BIN (src), src->filesrc);
+    pad = gst_element_get_static_pad (src->filesrc, "src");
+    g_assert (pad != NULL);
+    src->srcpad = gst_ghost_pad_new ("src", pad);
+    /* FIXME^H^HCORE: try pushfile:///foo/bar.ext ! typefind ! fakesink without
+     * this and watch core bugginess (some pad stays in flushing state) */
+    gst_pad_set_query_function (src->srcpad,
+        GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_query));
+    gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
+    gst_object_unref (pad);
+  }
+}
+
+/*** GSTURIHANDLER INTERFACE *************************************************/
+
+static GstURIType
+gst_push_file_src_uri_get_type (GType type)
+{
+  return GST_URI_SRC;
+}
+
+static const gchar *const *
+gst_push_file_src_uri_get_protocols (GType type)
+{
+  static const gchar *protocols[] = { "pushfile", NULL };
+
+  return protocols;
+}
+
+static gchar *
+gst_push_file_src_uri_get_uri (GstURIHandler * handler)
+{
+  GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
+  gchar *fileuri, *pushfileuri;
+
+  if (src->filesrc == NULL)
+    return NULL;
+
+  fileuri = gst_uri_handler_get_uri (GST_URI_HANDLER (src->filesrc));;
+  if (fileuri == NULL)
+    return NULL;
+  pushfileuri = g_strconcat ("push", fileuri, NULL);
+  g_free (fileuri);
+
+  return pushfileuri;
+}
+
+static gboolean
+gst_push_file_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
+    GError ** error)
+{
+  GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
+
+  if (src->filesrc == NULL) {
+    g_set_error_literal (error, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE,
+        "Could not create file source element");
+    return FALSE;
+  }
+
+  /* skip 'push' bit */
+  return gst_uri_handler_set_uri (GST_URI_HANDLER (src->filesrc), uri + 4,
+      error);
+}
+
+static void
+gst_push_file_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+  GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+  iface->get_type = gst_push_file_src_uri_get_type;
+  iface->get_protocols = gst_push_file_src_uri_get_protocols;
+  iface->get_uri = gst_push_file_src_uri_get_uri;
+  iface->set_uri = gst_push_file_src_uri_set_uri;
+}