--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/ext/gio/gstgiobasesink.c Wed Sep 01 12:16:41 2010 +0100
@@ -0,0 +1,349 @@
+/* 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;
+ GError *err = NULL;
+
+ if (G_IS_OUTPUT_STREAM (sink->stream)) {
+ GST_DEBUG_OBJECT (sink, "closing stream");
+
+ /* FIXME: can block but unfortunately we can't use async operations
+ * here because they require a running main loop */
+ success = g_output_stream_close (sink->stream, sink->cancel, &err);
+
+ if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
+ GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
+ ("g_ooutput_stream_close failed: %s", err->message));
+ g_clear_error (&err);
+ } else if (!success) {
+ GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
+ ("g_output_stream_close failed"));
+ } else {
+ GST_DEBUG_OBJECT (sink, "g_outut_stream_close succeeded");
+ }
+
+ g_object_unref (sink->stream);
+ sink->stream = NULL;
+ }
+
+ return TRUE;
+}
+
+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:
+ if (G_IS_OUTPUT_STREAM (sink->stream)) {
+ 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:
+ if (G_IS_OUTPUT_STREAM (sink->stream)) {
+ 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;
+
+ g_return_val_if_fail (G_IS_OUTPUT_STREAM (sink->stream), GST_FLOW_ERROR);
+
+ 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 (G_IS_OUTPUT_STREAM (sink->stream)) {
+ gboolean success;
+ GError *err = NULL;
+
+ GST_DEBUG_OBJECT (sink, "closing old stream");
+
+ /* FIXME: can block but unfortunately we can't use async operations
+ * here because they require a running main loop */
+ success = g_output_stream_close (sink->stream, sink->cancel, &err);
+
+ if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
+ GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
+ ("g_output_stream_close failed: %s", err->message));
+ g_clear_error (&err);
+ } else if (!success) {
+ GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
+ ("g_output_stream_close failed"));
+ } else {
+ GST_DEBUG_OBJECT (sink, "g_output_stream_close succeeded");
+ }
+
+ g_object_unref (sink->stream);
+ sink->stream = NULL;
+ }
+
+ sink->stream = stream;
+}