gstreamer/gst/camerabin2/gstvideorecordingbin.c
Thiago Santos 122a7bd556 camerabin2: Various fixes
As video recording bin's state is locked, we should always
remember of setting it to NULL when camerabin2 goes to NULL

Be more careful when using elements that might not
have been created yet

And do not set location property recursively on videorecordingbin
2010-12-08 15:38:29 -03:00

235 lines
6.2 KiB
C

/* GStreamer
* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
*
* 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.
*/
/**
* SECTION:element-gstvideorecordingbin
*
* The gstvideorecordingbin element does FIXME stuff.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v videotestsrc num-buffers=3 ! videorecordingbin
* ]|
* FIXME Describe what the pipeline does.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvideorecordingbin.h"
/* prototypes */
enum
{
PROP_0,
PROP_LOCATION
};
#define DEFAULT_LOCATION "vidcap"
/* pad templates */
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb")
);
/* class initialization */
GST_BOILERPLATE (GstVideoRecordingBin, gst_video_recording_bin, GstBin,
GST_TYPE_BIN);
/* Element class functions */
static GstStateChangeReturn
gst_video_recording_bin_change_state (GstElement * element,
GstStateChange trans);
static void
gst_video_recording_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoRecordingBin *vidbin = GST_VIDEO_RECORDING_BIN_CAST (object);
switch (prop_id) {
case PROP_LOCATION:
vidbin->location = g_value_dup_string (value);
if (vidbin->sink) {
g_object_set (vidbin->sink, "location", vidbin->location, NULL);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_recording_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVideoRecordingBin *vidbin = GST_VIDEO_RECORDING_BIN_CAST (object);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string (value, vidbin->location);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_recording_bin_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details_simple (element_class, "Video Recording Bin",
"Sink/Video", "Video Recording Bin used in camerabin2",
"Thiago Santos <thiago.sousa.santos@collabora.co.uk>");
}
static void
gst_video_recording_bin_class_init (GstVideoRecordingBinClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = gst_video_recording_bin_set_property;
gobject_class->get_property = gst_video_recording_bin_get_property;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_video_recording_bin_change_state);
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "Location",
"Location to save the captured files.",
DEFAULT_LOCATION, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_video_recording_bin_init (GstVideoRecordingBin * video_recordingbin,
GstVideoRecordingBinClass * video_recordingbin_class)
{
video_recordingbin->ghostpad =
gst_ghost_pad_new_no_target_from_template ("sink",
gst_static_pad_template_get (&sink_template));
gst_element_add_pad (GST_ELEMENT_CAST (video_recordingbin),
video_recordingbin->ghostpad);
video_recordingbin->location = g_strdup (DEFAULT_LOCATION);
}
static gboolean
gst_video_recording_bin_create_elements (GstVideoRecordingBin * vrbin)
{
GstElement *csp;
GstElement *enc;
GstElement *mux;
GstElement *sink;
GstPad *pad = NULL;
if (vrbin->elements_created)
return TRUE;
/* create elements */
csp = gst_element_factory_make ("ffmpegcolorspace", "vrbin-csp");
if (!csp)
goto error;
enc = gst_element_factory_make ("theoraenc", "vrbin-enc");
if (!enc)
goto error;
mux = gst_element_factory_make ("oggmux", "vrbin-mux");
if (!mux)
goto error;
sink = gst_element_factory_make ("filesink", "vrbin-sink");
if (!sink)
goto error;
vrbin->sink = gst_object_ref (sink);
g_object_set (sink, "location", vrbin->location, "async", FALSE, NULL);
/* add and link */
gst_bin_add_many (GST_BIN_CAST (vrbin), csp, enc, mux, sink, NULL);
if (!gst_element_link_many (csp, enc, mux, sink, NULL))
goto error;
/* add ghostpad */
pad = gst_element_get_static_pad (csp, "sink");
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (vrbin->ghostpad), pad))
goto error;
vrbin->elements_created = TRUE;
return TRUE;
error:
if (pad)
gst_object_unref (pad);
return FALSE;
}
static GstStateChangeReturn
gst_video_recording_bin_change_state (GstElement * element,
GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstVideoRecordingBin *vrbin = GST_VIDEO_RECORDING_BIN_CAST (element);
switch (trans) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_video_recording_bin_create_elements (vrbin)) {
return GST_STATE_CHANGE_FAILURE;
}
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
switch (trans) {
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
gboolean
gst_video_recording_bin_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "videorecordingbin", GST_RANK_NONE,
gst_video_recording_bin_get_type ());
}