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358 lines
10 KiB
C
358 lines
10 KiB
C
/* GStreamer
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*
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* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
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* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.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 "gstgiobasesink.h"
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GST_DEBUG_CATEGORY_STATIC (gst_gio_base_sink_debug);
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#define GST_CAT_DEFAULT gst_gio_base_sink_debug
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_BOILERPLATE (GstGioBaseSink, gst_gio_base_sink, GstBaseSink,
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GST_TYPE_BASE_SINK);
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static void gst_gio_base_sink_finalize (GObject * object);
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static gboolean gst_gio_base_sink_start (GstBaseSink * base_sink);
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static gboolean gst_gio_base_sink_stop (GstBaseSink * base_sink);
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static gboolean gst_gio_base_sink_unlock (GstBaseSink * base_sink);
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static gboolean gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink);
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static gboolean gst_gio_base_sink_event (GstBaseSink * base_sink,
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GstEvent * event);
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static GstFlowReturn gst_gio_base_sink_render (GstBaseSink * base_sink,
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GstBuffer * buffer);
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static gboolean gst_gio_base_sink_query (GstPad * pad, GstQuery * query);
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static void
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gst_gio_base_sink_base_init (gpointer gclass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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GST_DEBUG_CATEGORY_INIT (gst_gio_base_sink_debug, "gio_base_sink", 0,
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"GIO base sink");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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}
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static void
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gst_gio_base_sink_class_init (GstGioBaseSinkClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSinkClass *gstbasesink_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesink_class = (GstBaseSinkClass *) klass;
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gobject_class->finalize = gst_gio_base_sink_finalize;
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gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_gio_base_sink_start);
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gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_gio_base_sink_stop);
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gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock);
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gstbasesink_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_gio_base_sink_unlock_stop);
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gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_gio_base_sink_event);
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gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_gio_base_sink_render);
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}
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static void
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gst_gio_base_sink_init (GstGioBaseSink * sink, GstGioBaseSinkClass * gclass)
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{
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gst_pad_set_query_function (GST_BASE_SINK_PAD (sink),
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GST_DEBUG_FUNCPTR (gst_gio_base_sink_query));
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gst_base_sink_set_sync (GST_BASE_SINK (sink), FALSE);
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sink->cancel = g_cancellable_new ();
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}
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static void
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gst_gio_base_sink_finalize (GObject * object)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (object);
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if (sink->cancel) {
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g_object_unref (sink->cancel);
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sink->cancel = NULL;
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}
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if (sink->stream) {
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g_object_unref (sink->stream);
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sink->stream = NULL;
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}
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GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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static gboolean
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gst_gio_base_sink_start (GstBaseSink * base_sink)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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if (!G_IS_OUTPUT_STREAM (sink->stream)) {
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GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
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("No stream given yet"));
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return FALSE;
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}
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sink->position = 0;
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GST_DEBUG_OBJECT (sink, "started stream");
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return TRUE;
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}
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static gboolean
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gst_gio_base_sink_stop (GstBaseSink * base_sink)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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gboolean success;
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GError *err = NULL;
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if (G_IS_OUTPUT_STREAM (sink->stream)) {
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GST_DEBUG_OBJECT (sink, "closing stream");
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/* FIXME: can block but unfortunately we can't use async operations
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* here because they require a running main loop */
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success = g_output_stream_close (sink->stream, sink->cancel, &err);
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if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
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GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
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("g_ooutput_stream_close failed: %s", err->message));
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g_clear_error (&err);
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} else if (!success) {
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GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
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("g_output_stream_close failed"));
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} else {
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GST_DEBUG_OBJECT (sink, "g_outut_stream_close succeeded");
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}
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g_object_unref (sink->stream);
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sink->stream = NULL;
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}
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return TRUE;
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}
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static gboolean
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gst_gio_base_sink_unlock (GstBaseSink * base_sink)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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GST_LOG_OBJECT (sink, "triggering cancellation");
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g_cancellable_cancel (sink->cancel);
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return TRUE;
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}
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static gboolean
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gst_gio_base_sink_unlock_stop (GstBaseSink * base_sink)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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GST_LOG_OBJECT (sink, "resetting cancellable");
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g_cancellable_reset (sink->cancel);
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return TRUE;
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}
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static gboolean
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gst_gio_base_sink_event (GstBaseSink * base_sink, GstEvent * event)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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GstFlowReturn ret = GST_FLOW_OK;
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if (sink->stream == NULL)
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return TRUE;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:
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if (G_IS_OUTPUT_STREAM (sink->stream)) {
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GstFormat format;
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gint64 offset;
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gst_event_parse_new_segment (event, NULL, NULL, &format, &offset, NULL,
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NULL);
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if (format != GST_FORMAT_BYTES) {
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GST_WARNING_OBJECT (sink, "ignored NEWSEGMENT event in %s format",
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gst_format_get_name (format));
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break;
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}
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if (GST_GIO_STREAM_IS_SEEKABLE (sink->stream)) {
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ret = gst_gio_seek (sink, G_SEEKABLE (sink->stream), offset,
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sink->cancel);
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if (ret == GST_FLOW_OK)
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sink->position = offset;
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} else {
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ret = GST_FLOW_NOT_SUPPORTED;
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}
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}
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break;
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case GST_EVENT_EOS:
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case GST_EVENT_FLUSH_START:
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if (G_IS_OUTPUT_STREAM (sink->stream)) {
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gboolean success;
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GError *err = NULL;
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success = g_output_stream_flush (sink->stream, sink->cancel, &err);
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if (!success && !gst_gio_error (sink, "g_output_stream_flush", &err,
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&ret)) {
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GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
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("flush failed: %s", err->message));
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g_clear_error (&err);
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}
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}
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break;
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default:
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break;
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}
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return (ret == GST_FLOW_OK);
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}
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static GstFlowReturn
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gst_gio_base_sink_render (GstBaseSink * base_sink, GstBuffer * buffer)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (base_sink);
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gssize written;
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gboolean success;
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GError *err = NULL;
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g_return_val_if_fail (G_IS_OUTPUT_STREAM (sink->stream), GST_FLOW_ERROR);
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GST_LOG_OBJECT (sink, "writing %u bytes to offset %" G_GUINT64_FORMAT,
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GST_BUFFER_SIZE (buffer), sink->position);
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written = g_output_stream_write (sink->stream,
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GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), sink->cancel, &err);
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success = (written >= 0);
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if (G_UNLIKELY (success && written < GST_BUFFER_SIZE (buffer))) {
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/* FIXME: Can this happen? Should we handle it gracefully? gnomevfssink
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* doesn't... */
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GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
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("Could not write to stream: (short write, only %"
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G_GSSIZE_FORMAT " bytes of %d bytes written)",
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written, GST_BUFFER_SIZE (buffer)));
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return GST_FLOW_ERROR;
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}
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if (success) {
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sink->position += written;
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return GST_FLOW_OK;
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} else {
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GstFlowReturn ret;
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if (!gst_gio_error (sink, "g_output_stream_write", &err, &ret)) {
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GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (NULL),
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("Could not write to stream: %s", err->message));
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g_clear_error (&err);
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}
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return ret;
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}
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}
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static gboolean
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gst_gio_base_sink_query (GstPad * pad, GstQuery * query)
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{
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GstGioBaseSink *sink = GST_GIO_BASE_SINK (GST_PAD_PARENT (pad));
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GstFormat format;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_POSITION:
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gst_query_parse_position (query, &format, NULL);
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switch (format) {
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case GST_FORMAT_BYTES:
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case GST_FORMAT_DEFAULT:
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gst_query_set_position (query, GST_FORMAT_BYTES, sink->position);
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return TRUE;
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default:
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return FALSE;
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}
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case GST_QUERY_FORMATS:
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gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES);
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return TRUE;
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case GST_QUERY_URI:
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if (GST_IS_URI_HANDLER (sink)) {
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const gchar *uri;
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uri = gst_uri_handler_get_uri (GST_URI_HANDLER (sink));
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gst_query_set_uri (query, uri);
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return TRUE;
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}
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return FALSE;
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default:
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return gst_pad_query_default (pad, query);
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}
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}
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void
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gst_gio_base_sink_set_stream (GstGioBaseSink * sink, GOutputStream * stream)
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{
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g_return_if_fail (G_IS_OUTPUT_STREAM (stream));
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g_return_if_fail ((GST_STATE (sink) != GST_STATE_PLAYING &&
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GST_STATE (sink) != GST_STATE_PAUSED));
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if (G_IS_OUTPUT_STREAM (sink->stream)) {
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gboolean success;
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GError *err = NULL;
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GST_DEBUG_OBJECT (sink, "closing old stream");
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/* FIXME: can block but unfortunately we can't use async operations
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* here because they require a running main loop */
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success = g_output_stream_close (sink->stream, sink->cancel, &err);
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if (!success && !gst_gio_error (sink, "g_output_stream_close", &err, NULL)) {
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GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
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("g_output_stream_close failed: %s", err->message));
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g_clear_error (&err);
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} else if (!success) {
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GST_ELEMENT_WARNING (sink, RESOURCE, CLOSE, (NULL),
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("g_output_stream_close failed"));
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} else {
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GST_DEBUG_OBJECT (sink, "g_output_stream_close succeeded");
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}
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g_object_unref (sink->stream);
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sink->stream = NULL;
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}
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sink->stream = stream;
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}
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