ext/gio/gstgio.h: Add macro to check if a stream supports seeking.

Original commit message from CVS:
* ext/gio/gstgio.h:
Add macro to check if a stream supports seeking.
* ext/gio/Makefile.am:
* ext/gio/gstgiobasesink.c: (gst_gio_base_sink_base_init),
(gst_gio_base_sink_class_init), (gst_gio_base_sink_init),
(gst_gio_base_sink_finalize), (gst_gio_base_sink_start),
(gst_gio_base_sink_stop), (gst_gio_base_sink_unlock),
(gst_gio_base_sink_unlock_stop), (gst_gio_base_sink_event),
(gst_gio_base_sink_render), (gst_gio_base_sink_query),
(gst_gio_base_sink_set_stream):
* ext/gio/gstgiobasesink.h:
* ext/gio/gstgiobasesrc.c: (gst_gio_base_src_base_init),
(gst_gio_base_src_class_init), (gst_gio_base_src_init),
(gst_gio_base_src_finalize), (gst_gio_base_src_start),
(gst_gio_base_src_stop), (gst_gio_base_src_get_size),
(gst_gio_base_src_is_seekable), (gst_gio_base_src_unlock),
(gst_gio_base_src_unlock_stop), (gst_gio_base_src_check_get_range),
(gst_gio_base_src_create), (gst_gio_base_src_set_stream):
* ext/gio/gstgiobasesrc.h:
Refactor common GIO functions to GstGioBaseSink and GstGioBaseSrc
base classes that only require a GInputStream or GOutputStream to
work.
* ext/gio/gstgiosink.c: (gst_gio_sink_base_init),
(gst_gio_sink_class_init), (gst_gio_sink_init),
(gst_gio_sink_finalize), (gst_gio_sink_start):
* ext/gio/gstgiosink.h:
* ext/gio/gstgiosrc.c: (gst_gio_src_base_init),
(gst_gio_src_class_init), (gst_gio_src_init),
(gst_gio_src_finalize), (gst_gio_src_start):
* ext/gio/gstgiosrc.h:
Use the newly created base classes here.
* ext/gio/gstgio.c: (plugin_init):
* ext/gio/gstgiostreamsink.c: (gst_gio_stream_sink_base_init),
(gst_gio_stream_sink_class_init), (gst_gio_stream_sink_init),
(gst_gio_stream_sink_finalize), (gst_gio_stream_sink_set_property),
(gst_gio_stream_sink_get_property):
* ext/gio/gstgiostreamsink.h:
* ext/gio/gstgiostreamsrc.c: (gst_gio_stream_src_base_init),
(gst_gio_stream_src_class_init), (gst_gio_stream_src_init),
(gst_gio_stream_src_finalize), (gst_gio_stream_src_set_property),
(gst_gio_stream_src_get_property):
* ext/gio/gstgiostreamsrc.h:
Implement GstGioStreamSink and GstGioStreamSrc that have a property
to set the GInputStream/GOutputStream that should be used.
* tests/check/Makefile.am:
* tests/check/pipelines/.cvsignore:
* tests/check/pipelines/gio.c: (message_handler), (GST_START_TEST),
(gio_testsuite), (main):
Add unit test for giostreamsrc and giostreamsink.

1 files changed, 334 insertions, 0 deletions

diff --git a/ext/gio/gstgiobasesink.c b/ext/gio/gstgiobasesink.c
new file mode 100644
index 00000000..1885b463
--- /dev/null
+++ b/ext/gio/gstgiobasesink.c
@@ -0,0 +1,334 @@
+/* GStreamer
+ *
+ * Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
+ * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
+ * 
+ * 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 "gstgiobasesink.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_gio_base_sink_debug);
+#define GST_CAT_DEFAULT gst_gio_base_sink_debug
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+GST_BOILERPLATE (GstGioBaseSink, gst_gio_base_sink, GstBaseSink,
+    GST_TYPE_BASE_SINK);
+
+static void gst_gio_base_sink_finalize (GObject * object);
+static gboolean gst_gio_base_sink_start (GstBaseSink * base_sink);
+static gboolean gst_gio_base_sink_stop (GstBaseSink * base_sink);
+static gboolean gst_gio_base_sink_unlock (GstBaseSink * base_sink);
+static gboolean gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink);
+static gboolean gst_gio_base_sink_event (GstBaseSink * base_sink,
+    GstEvent * event);
+static GstFlowReturn gst_gio_base_sink_render (GstBaseSink * base_sink,
+    GstBuffer * buffer);
+static gboolean gst_gio_base_sink_query (GstPad * pad, GstQuery * query);
+
+static void
+gst_gio_base_sink_base_init (gpointer gclass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  GST_DEBUG_CATEGORY_INIT (gst_gio_base_sink_debug, "gio_base_sink", 0,
+      "GIO base sink");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+}
+
+static void
+gst_gio_base_sink_class_init (GstGioBaseSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+
+  gobject_class->finalize = gst_gio_base_sink_finalize;
+
+  gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_gio_base_sink_start);
+  gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_gio_base_sink_stop);
+  gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock);
+  gstbasesink_class->unlock_stop =
+      GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock_stop);
+  gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_gio_base_sink_event);
+  gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_gio_base_sink_render);
+}
+
+static void
+gst_gio_base_sink_init (GstGioBaseSink * sink, GstGioBaseSinkClass * gclass)
+{
+  gst_pad_set_query_function (GST_BASE_SINK_PAD (sink),
+      GST_DEBUG_FUNCPTR (gst_gio_base_sink_query));
+
+  gst_base_sink_set_sync (GST_BASE_SINK (sink), FALSE);
+
+  sink->cancel = g_cancellable_new ();
+}
+
+static void
+gst_gio_base_sink_finalize (GObject * object)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (object);
+
+  if (sink->cancel) {
+    g_object_unref (sink->cancel);
+    sink->cancel = NULL;
+  }
+
+  if (sink->stream) {
+    g_object_unref (sink->stream);
+    sink->stream = NULL;
+  }
+
+  GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+}
+
+static gboolean
+gst_gio_base_sink_start (GstBaseSink * base_sink)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+
+  if (!G_IS_OUTPUT_STREAM (sink->stream)) {
+    GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
+        ("No stream given yet"));
+    return FALSE;
+  }
+
+  sink->position = 0;
+
+  GST_DEBUG_OBJECT (sink, "started stream");
+
+  return TRUE;
+}
+
+static gboolean
+gst_gio_base_sink_stop (GstBaseSink * base_sink)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+  gboolean success = TRUE;
+  GError *err = NULL;
+
+  if (G_IS_OUTPUT_STREAM (sink->stream)) {
+    /* FIXME: In case that the call below would block, there is no one to
+     * trigger the cancellation! */
+
+    success = g_output_stream_close (sink->stream, sink->cancel, &err);
+
+    if (success) {
+      GST_DEBUG_OBJECT (sink, "closed stream");
+    } else if (!gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
+      GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE, (NULL),
+          ("g_output_stream_close failed: %s", err->message));
+      g_clear_error (&err);
+    }
+
+    g_object_unref (sink->stream);
+    sink->stream = NULL;
+  }
+
+  return success;
+}
+
+static gboolean
+gst_gio_base_sink_unlock (GstBaseSink * base_sink)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+
+  GST_LOG_OBJECT (sink, "triggering cancellation");
+
+  g_cancellable_cancel (sink->cancel);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+
+  GST_LOG_OBJECT (sink, "resetting cancellable");
+
+  g_cancellable_reset (sink->cancel);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gio_base_sink_event (GstBaseSink * base_sink, GstEvent * event)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+  GstFlowReturn ret = GST_FLOW_OK;
+
+  if (sink->stream == NULL)
+    return TRUE;
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_NEWSEGMENT:
+    {
+      GstFormat format;
+      gint64 offset;
+
+      gst_event_parse_new_segment (event, NULL, NULL, &format, &offset, NULL,
+          NULL);
+
+      if (format != GST_FORMAT_BYTES) {
+        GST_WARNING_OBJECT (sink, "ignored NEWSEGMENT event in %s format",
+            gst_format_get_name (format));
+        break;
+      }
+
+      if (GST_GIO_STREAM_IS_SEEKABLE (sink->stream)) {
+        ret = gst_gio_seek (sink, G_SEEKABLE (sink->stream), offset,
+            sink->cancel);
+        if (ret == GST_FLOW_OK)
+          sink->position = offset;
+      } else {
+        ret = GST_FLOW_NOT_SUPPORTED;
+      }
+    }
+      break;
+
+    case GST_EVENT_EOS:
+    case GST_EVENT_FLUSH_START:
+    {
+      gboolean success;
+      GError *err = NULL;
+
+      success = g_output_stream_flush (sink->stream, sink->cancel, &err);
+
+      if (!success && !gst_gio_error (sink, "g_output_stream_flush", &err,
+              &ret)) {
+        GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
+            ("flush failed: %s", err->message));
+        g_clear_error (&err);
+      }
+    }
+      break;
+
+    default:
+      break;
+  }
+
+  return (ret == GST_FLOW_OK);
+}
+
+static GstFlowReturn
+gst_gio_base_sink_render (GstBaseSink * base_sink, GstBuffer * buffer)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
+  gssize written;
+  gboolean success;
+  GError *err = NULL;
+
+  GST_LOG_OBJECT (sink, "writing %u bytes to offset %" G_GUINT64_FORMAT,
+      GST_BUFFER_SIZE (buffer), sink->position);
+
+  written = g_output_stream_write (sink->stream,
+      GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), sink->cancel, &err);
+
+  success = (written >= 0);
+
+  if (G_UNLIKELY (success && written < GST_BUFFER_SIZE (buffer))) {
+    /* FIXME: Can this happen?  Should we handle it gracefully?  gnomevfssink
+     * doesn't... */
+    GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
+        ("Could not write to stream: (short write, only %"
+            G_GUINT64_FORMAT " bytes of %d bytes written)",
+            written, GST_BUFFER_SIZE (buffer)));
+    return GST_FLOW_ERROR;
+  }
+
+  if (success) {
+    sink->position += written;
+    return GST_FLOW_OK;
+
+  } else {
+    GstFlowReturn ret;
+
+    if (!gst_gio_error (sink, "g_output_stream_write", &err, &ret)) {
+      GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
+          ("Could not write to stream: %s", err->message));
+      g_clear_error (&err);
+    }
+
+    return ret;
+  }
+}
+
+static gboolean
+gst_gio_base_sink_query (GstPad * pad, GstQuery * query)
+{
+  GstGioBaseSink *sink = GST_GIO_BASE_SINK (GST_PAD_PARENT (pad));
+  GstFormat format;
+
+  switch (GST_QUERY_TYPE (query)) {
+    case GST_QUERY_POSITION:
+      gst_query_parse_position (query, &format, NULL);
+      switch (format) {
+        case GST_FORMAT_BYTES:
+        case GST_FORMAT_DEFAULT:
+          gst_query_set_position (query, GST_FORMAT_BYTES, sink->position);
+          return TRUE;
+        default:
+          return FALSE;
+      }
+    case GST_QUERY_FORMATS:
+      gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES);
+      return TRUE;
+    default:
+      return gst_pad_query_default (pad, query);
+  }
+}
+
+void
+gst_gio_base_sink_set_stream (GstGioBaseSink * sink, GOutputStream * stream)
+{
+  g_return_if_fail (G_IS_OUTPUT_STREAM (stream));
+  g_return_if_fail ((GST_STATE (sink) != GST_STATE_PLAYING &&
+          GST_STATE (sink) != GST_STATE_PAUSED));
+
+  if (sink->stream) {
+    GError *err = NULL;
+    gboolean success = g_output_stream_close (sink->stream, sink->cancel, &err);
+
+    if (success) {
+      GST_DEBUG_OBJECT (sink, "closed stream");
+    } else if (!gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
+      GST_WARNING_OBJECT (sink, "g_output_stream_close failed: %s",
+          err->message);
+      g_clear_error (&err);
+    }
+
+    g_object_unref (sink->stream);
+    sink->stream = NULL;
+  }
+
+  sink->stream = stream;
+}