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497 lines
12 KiB
C
497 lines
12 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstfilesink.c:
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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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/**
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* SECTION:gstfilesink
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* @short_description: write stream to a file
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* @see_also: #GstFileSrc
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*
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* Wrtite incomming data to a file in the local file system.
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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 "../gst-i18n-lib.h"
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#include <gst/gst.h>
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#include <errno.h>
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#include "gstfilesink.h"
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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static GstStaticPadTemplate sinktemplate = 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_DEBUG_CATEGORY_STATIC (gst_file_sink_debug);
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#define GST_CAT_DEFAULT gst_file_sink_debug
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GstElementDetails gst_file_sink_details = GST_ELEMENT_DETAILS ("File Sink",
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"Sink/File",
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"Write stream to a file",
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"Thomas <thomas@apestaart.org>");
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/* FileSink signals and args */
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enum
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{
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/* FILL ME */
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SIGNAL_HANDOFF,
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_LOCATION
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};
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static void gst_file_sink_dispose (GObject * object);
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static void gst_file_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_file_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_file_sink_open_file (GstFileSink * sink);
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static void gst_file_sink_close_file (GstFileSink * sink);
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static gboolean gst_file_sink_event (GstBaseSink * sink, GstEvent * event);
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static GstFlowReturn gst_file_sink_render (GstBaseSink * sink,
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GstBuffer * buffer);
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static gboolean gst_file_sink_query (GstPad * pad, GstQuery * query);
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static void gst_file_sink_uri_handler_init (gpointer g_iface,
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gpointer iface_data);
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static GstElementStateReturn gst_file_sink_change_state (GstElement * element);
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//static guint gst_file_sink_signals[LAST_SIGNAL] = { 0 };
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static void
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_do_init (GType filesink_type)
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{
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static const GInterfaceInfo urihandler_info = {
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gst_file_sink_uri_handler_init,
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NULL,
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NULL
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};
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g_type_add_interface_static (filesink_type, GST_TYPE_URI_HANDLER,
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&urihandler_info);
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GST_DEBUG_CATEGORY_INIT (gst_file_sink_debug, "filesink", 0,
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"filesink element");
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}
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GST_BOILERPLATE_FULL (GstFileSink, gst_file_sink, GstBaseSink,
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GST_TYPE_BASE_SINK, _do_init);
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static void
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gst_file_sink_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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gstelement_class->change_state = gst_file_sink_change_state;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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gst_element_class_set_details (gstelement_class, &gst_file_sink_details);
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}
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static void
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gst_file_sink_class_init (GstFileSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseSinkClass *gstbasesink_class = GST_BASE_SINK_CLASS (klass);
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gobject_class->set_property = gst_file_sink_set_property;
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gobject_class->get_property = gst_file_sink_get_property;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
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g_param_spec_string ("location", "File Location",
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"Location of the file to write", NULL, G_PARAM_READWRITE));
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gobject_class->dispose = gst_file_sink_dispose;
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gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_file_sink_render);
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gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_file_sink_event);
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if (sizeof (off_t) < 8) {
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GST_LOG ("No large file support, sizeof (off_t) = %u", sizeof (off_t));
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}
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}
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static void
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gst_file_sink_init (GstFileSink * filesink)
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{
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GstPad *pad;
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pad = GST_BASE_SINK_PAD (filesink);
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gst_pad_set_query_function (pad, gst_file_sink_query);
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filesink->filename = NULL;
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filesink->file = NULL;
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}
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static void
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gst_file_sink_dispose (GObject * object)
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{
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GstFileSink *sink = GST_FILE_SINK (object);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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g_free (sink->uri);
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sink->uri = NULL;
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g_free (sink->filename);
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sink->filename = NULL;
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}
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static gboolean
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gst_file_sink_set_location (GstFileSink * sink, const gchar * location)
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{
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/* the element must be stopped or paused in order to do this */
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if (GST_STATE (sink) >= GST_STATE_PAUSED)
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return FALSE;
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g_free (sink->filename);
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g_free (sink->uri);
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if (location != NULL) {
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sink->filename = g_strdup (location);
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sink->uri = gst_uri_construct ("file", location);
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} else {
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sink->filename = NULL;
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sink->uri = NULL;
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}
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return TRUE;
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}
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static void
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gst_file_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstFileSink *sink;
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sink = GST_FILE_SINK (object);
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switch (prop_id) {
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case ARG_LOCATION:
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gst_file_sink_set_location (sink, g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_file_sink_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstFileSink *sink;
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g_return_if_fail (GST_IS_FILE_SINK (object));
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sink = GST_FILE_SINK (object);
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switch (prop_id) {
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case ARG_LOCATION:
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g_value_set_string (value, sink->filename);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_file_sink_open_file (GstFileSink * sink)
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{
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/* open the file */
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if (sink->filename == NULL || sink->filename[0] == '\0') {
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GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND,
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(_("No file name specified for writing.")), (NULL));
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return FALSE;
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}
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sink->file = fopen (sink->filename, "wb");
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if (sink->file == NULL) {
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GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
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(_("Could not open file \"%s\" for writing."), sink->filename),
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GST_ERROR_SYSTEM);
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return FALSE;
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}
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sink->data_written = 0;
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return TRUE;
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}
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static void
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gst_file_sink_close_file (GstFileSink * sink)
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{
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if (fclose (sink->file) != 0) {
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GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE,
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(_("Error closing file \"%s\"."), sink->filename), GST_ERROR_SYSTEM);
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}
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}
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static gboolean
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gst_file_sink_query (GstPad * pad, GstQuery * query)
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{
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GstFileSink *self;
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GstFormat format;
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self = GST_FILE_SINK (GST_PAD_PARENT (pad));
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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, NULL);
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switch (format) {
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case GST_FORMAT_DEFAULT:
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case GST_FORMAT_BYTES:
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gst_query_set_position (query, GST_FORMAT_BYTES,
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self->data_written, self->data_written);
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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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default:
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return gst_pad_query_default (pad, query);
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}
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}
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static void
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gst_file_sink_do_seek (GstFileSink * filesink, guint64 new_offset)
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{
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GST_DEBUG_OBJECT (filesink, "Seeking to offset %" G_GUINT64_FORMAT,
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new_offset);
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#ifdef G_OS_UNIX
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if (lseek (fileno (filesink->file), (off_t) new_offset,
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SEEK_SET) != (off_t) - 1)
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return;
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#else
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if (fseek (filesink->file, (long) new_offset, SEEK_SET) == 0)
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return;
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#endif
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GST_DEBUG_OBJECT (filesink, "Seeking failed: %s", g_strerror (errno));
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}
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/* handle events (search) */
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static gboolean
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gst_file_sink_event (GstBaseSink * sink, GstEvent * event)
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{
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GstEventType type;
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GstFileSink *filesink;
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filesink = GST_FILE_SINK (sink);
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type = GST_EVENT_TYPE (event);
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switch (type) {
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case GST_EVENT_NEWSEGMENT:
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{
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gint64 soffset, eoffset;
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GstFormat format;
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gst_event_parse_newsegment (event, NULL, &format, &soffset, &eoffset,
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NULL);
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if (format == GST_FORMAT_BYTES) {
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gst_file_sink_do_seek (filesink, (guint64) soffset);
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} else {
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GST_DEBUG ("Ignored NEWSEGMENT event of format %u", (guint) format);
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}
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break;
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}
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case GST_EVENT_EOS:
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if (fflush (filesink->file)) {
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GST_ELEMENT_ERROR (filesink, RESOURCE, WRITE,
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(_("Error while writing to file \"%s\"."), filesink->filename),
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GST_ERROR_SYSTEM);
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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 TRUE;
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}
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static gboolean
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gst_file_sink_get_current_offset (GstFileSink * filesink, guint64 * p_pos)
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{
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off_t ret;
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#ifdef G_OS_UNIX
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ret = lseek (fileno (filesink->file), 0, SEEK_CUR);
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#else
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ret = (off_t) ftell (filesink->file);
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#endif
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*p_pos = (guint64) ret;
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return (ret != (off_t) - 1);
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}
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static GstFlowReturn
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gst_file_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstFileSink *filesink;
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guint64 cur_pos;
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guint size, back_pending = 0;
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size = GST_BUFFER_SIZE (buffer);
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filesink = GST_FILE_SINK (sink);
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if (!gst_file_sink_get_current_offset (filesink, &cur_pos))
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goto handle_error;
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if (cur_pos < filesink->data_written)
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back_pending = filesink->data_written - cur_pos;
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if (fwrite (GST_BUFFER_DATA (buffer), size, 1, filesink->file) != 1)
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goto handle_error;
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filesink->data_written += size - back_pending;
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return GST_FLOW_OK;
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handle_error:
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GST_ELEMENT_ERROR (filesink, RESOURCE, WRITE,
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(_("Error while writing to file \"%s\"."), filesink->filename),
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("%s", g_strerror (errno)));
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return GST_FLOW_ERROR;
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}
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static GstElementStateReturn
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gst_file_sink_change_state (GstElement * element)
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{
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GstElementStateReturn ret;
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gint transition;
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transition = GST_STATE_TRANSITION (element);
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switch (transition) {
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case GST_STATE_NULL_TO_READY:
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break;
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case GST_STATE_READY_TO_PAUSED:
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if (!gst_file_sink_open_file (GST_FILE_SINK (element)))
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goto open_error;
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break;
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case GST_STATE_PAUSED_TO_PLAYING:
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
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switch (transition) {
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case GST_STATE_PLAYING_TO_PAUSED:
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break;
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case GST_STATE_PAUSED_TO_READY:
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gst_file_sink_close_file (GST_FILE_SINK (element));
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break;
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case GST_STATE_READY_TO_NULL:
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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;
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open_error:
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{
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return GST_STATE_FAILURE;
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}
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}
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/*** GSTURIHANDLER INTERFACE *************************************************/
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static guint
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gst_file_sink_uri_get_type (void)
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{
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return GST_URI_SINK;
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}
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static gchar **
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gst_file_sink_uri_get_protocols (void)
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{
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static gchar *protocols[] = { "file", NULL };
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return protocols;
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}
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static const gchar *
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gst_file_sink_uri_get_uri (GstURIHandler * handler)
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{
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GstFileSink *sink = GST_FILE_SINK (handler);
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return sink->uri;
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}
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static gboolean
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gst_file_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri)
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{
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gchar *protocol, *location;
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gboolean ret;
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GstFileSink *sink = GST_FILE_SINK (handler);
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protocol = gst_uri_get_protocol (uri);
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if (strcmp (protocol, "file") != 0) {
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g_free (protocol);
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return FALSE;
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}
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g_free (protocol);
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location = gst_uri_get_location (uri);
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ret = gst_file_sink_set_location (sink, location);
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g_free (location);
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return ret;
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}
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static void
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gst_file_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
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{
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GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
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iface->get_type = gst_file_sink_uri_get_type;
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iface->get_protocols = gst_file_sink_uri_get_protocols;
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iface->get_uri = gst_file_sink_uri_get_uri;
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iface->set_uri = gst_file_sink_uri_set_uri;
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}
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