mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
234 lines
7.1 KiB
C
234 lines
7.1 KiB
C
/* GStreamer
|
|
* Copyright (C) 2011 David Schleef <ds@entropywave.com>
|
|
*
|
|
* 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., 51 Franklin Street, Suite 500,
|
|
* Boston, MA 02110-1335, USA.
|
|
*/
|
|
/**
|
|
* SECTION:element-intersubsink
|
|
* @title: gstintersubsink
|
|
*
|
|
* The intersubsink element is a subtitle sink element. It is used
|
|
* in connection with a intersubsrc element in a different pipeline.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 -v ... ! intersubsink
|
|
* ]|
|
|
*
|
|
* The intersubsink element cannot be used effectively with gst-launch-1.0,
|
|
* as it requires a second pipeline in the application to send audio.
|
|
* See the gstintertest.c example in the gst-plugins-bad source code for
|
|
* more details.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbasesink.h>
|
|
#include "gstintersubsink.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_inter_sub_sink_debug_category);
|
|
#define GST_CAT_DEFAULT gst_inter_sub_sink_debug_category
|
|
|
|
/* prototypes */
|
|
static void gst_inter_sub_sink_set_property (GObject * object,
|
|
guint property_id, const GValue * value, GParamSpec * pspec);
|
|
static void gst_inter_sub_sink_get_property (GObject * object,
|
|
guint property_id, GValue * value, GParamSpec * pspec);
|
|
static void gst_inter_sub_sink_finalize (GObject * object);
|
|
|
|
static void gst_inter_sub_sink_get_times (GstBaseSink * sink,
|
|
GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
|
|
static gboolean gst_inter_sub_sink_start (GstBaseSink * sink);
|
|
static gboolean gst_inter_sub_sink_stop (GstBaseSink * sink);
|
|
static GstFlowReturn
|
|
gst_inter_sub_sink_render (GstBaseSink * sink, GstBuffer * buffer);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_CHANNEL
|
|
};
|
|
|
|
#define DEFAULT_CHANNEL ("default")
|
|
|
|
/* pad templates */
|
|
static GstStaticPadTemplate gst_inter_sub_sink_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("text/plain")
|
|
);
|
|
|
|
|
|
/* class initialization */
|
|
#define parent_class gst_inter_sub_sink_parent_class
|
|
G_DEFINE_TYPE (GstInterSubSink, gst_inter_sub_sink, GST_TYPE_BASE_SINK);
|
|
GST_ELEMENT_REGISTER_DEFINE (intersubsink, "intersubsink", GST_RANK_NONE,
|
|
GST_TYPE_INTER_SUB_SINK);
|
|
|
|
static void
|
|
gst_inter_sub_sink_class_init (GstInterSubSinkClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_inter_sub_sink_debug_category, "intersubsink", 0,
|
|
"debug category for intersubsink element");
|
|
|
|
gst_element_class_add_static_pad_template (element_class,
|
|
&gst_inter_sub_sink_sink_template);
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"Internal subtitle sink",
|
|
"Sink/Subtitle",
|
|
"Virtual subtitle sink for internal process communication",
|
|
"David Schleef <ds@schleef.org>");
|
|
|
|
gobject_class->set_property = gst_inter_sub_sink_set_property;
|
|
gobject_class->get_property = gst_inter_sub_sink_get_property;
|
|
gobject_class->finalize = gst_inter_sub_sink_finalize;
|
|
base_sink_class->get_times = GST_DEBUG_FUNCPTR (gst_inter_sub_sink_get_times);
|
|
base_sink_class->start = GST_DEBUG_FUNCPTR (gst_inter_sub_sink_start);
|
|
base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_inter_sub_sink_stop);
|
|
base_sink_class->render = GST_DEBUG_FUNCPTR (gst_inter_sub_sink_render);
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CHANNEL,
|
|
g_param_spec_string ("channel", "Channel",
|
|
"Channel name to match inter src and sink elements",
|
|
DEFAULT_CHANNEL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
static void
|
|
gst_inter_sub_sink_init (GstInterSubSink * intersubsink)
|
|
{
|
|
intersubsink->channel = g_strdup (DEFAULT_CHANNEL);
|
|
|
|
intersubsink->fps_n = 1;
|
|
intersubsink->fps_d = 1;
|
|
}
|
|
|
|
void
|
|
gst_inter_sub_sink_set_property (GObject * object, guint property_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (object);
|
|
|
|
switch (property_id) {
|
|
case PROP_CHANNEL:
|
|
g_free (intersubsink->channel);
|
|
intersubsink->channel = g_value_dup_string (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_inter_sub_sink_get_property (GObject * object, guint property_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (object);
|
|
|
|
switch (property_id) {
|
|
case PROP_CHANNEL:
|
|
g_value_set_string (value, intersubsink->channel);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_inter_sub_sink_finalize (GObject * object)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (object);
|
|
|
|
g_free (intersubsink->channel);
|
|
intersubsink->channel = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_inter_sub_sink_get_times (GstBaseSink * sink, GstBuffer * buffer,
|
|
GstClockTime * start, GstClockTime * end)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (sink);
|
|
|
|
if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
|
|
*start = GST_BUFFER_TIMESTAMP (buffer);
|
|
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
|
|
*end = *start + GST_BUFFER_DURATION (buffer);
|
|
} else {
|
|
if (intersubsink->fps_n > 0) {
|
|
*end = *start +
|
|
gst_util_uint64_scale_int (GST_SECOND, intersubsink->fps_d,
|
|
intersubsink->fps_n);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_inter_sub_sink_start (GstBaseSink * sink)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (sink);
|
|
|
|
intersubsink->surface = gst_inter_surface_get (intersubsink->channel);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_inter_sub_sink_stop (GstBaseSink * sink)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (sink);
|
|
|
|
g_mutex_lock (&intersubsink->surface->mutex);
|
|
if (intersubsink->surface->sub_buffer) {
|
|
gst_buffer_unref (intersubsink->surface->sub_buffer);
|
|
}
|
|
intersubsink->surface->sub_buffer = NULL;
|
|
g_mutex_unlock (&intersubsink->surface->mutex);
|
|
|
|
gst_inter_surface_unref (intersubsink->surface);
|
|
intersubsink->surface = NULL;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_inter_sub_sink_render (GstBaseSink * sink, GstBuffer * buffer)
|
|
{
|
|
GstInterSubSink *intersubsink = GST_INTER_SUB_SINK (sink);
|
|
|
|
g_mutex_lock (&intersubsink->surface->mutex);
|
|
if (intersubsink->surface->sub_buffer) {
|
|
gst_buffer_unref (intersubsink->surface->sub_buffer);
|
|
}
|
|
intersubsink->surface->sub_buffer = gst_buffer_ref (buffer);
|
|
//intersubsink->surface->sub_buffer_count = 0;
|
|
g_mutex_unlock (&intersubsink->surface->mutex);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|