Commit 749d7204 authored by David Schleef's avatar David Schleef
Browse files

Add a new plugin/library to make it easy for apps to shove data into a pipeline.

Original commit message from CVS:
* configure.ac:
* gst/app/Makefile.am:
* gst/app/gstapp.c:
* gst/app/gstappsrc.c:
* gst/app/gstappsrc.h:
Add a new plugin/library to make it easy for apps to shove
data into a pipeline.
parent 6c8b08b0
lib_LTLIBRARIES = libgstapp-0.10.la
plugin_LTLIBRARIES = libgstapp.la
libgstapp_la_SOURCES = gstapp.c
libgstapp_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
$(GST_PLUGINS_BASE_CFLAGS)
libgstapp_la_LIBADD = $(GST_BASE_LIBS) libgstapp-0.10.la
libgstapp_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstapp_0_10_la_SOURCES = gstappsrc.c
libgstapp_0_10_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
$(GST_PLUGINS_BASE_CFLAGS)
libgstapp_0_10_la_LIBADD = $(GST_BASE_LIBS)
libgstapp_0_10_la_LDFLAGS = $(GST_LDFLAGS)
noinst_HEADERS = gstappsrc.h
/* GStreamer
* Copyright (C) 2007 David Schleef <ds@schleef.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 <gst/gst.h>
#include "gstappsrc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (app_src_debug, "appsrc", 0, "appsrc");
return gst_element_register (plugin, "appsrc", GST_RANK_NONE,
GST_TYPE_APP_SRC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"app",
"Elements used to communicate with applications",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
/* GStreamer
* Copyright (C) 2007 David Schleef <ds@schleef.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 <gst/gst.h>
#include <gst/base/gstpushsrc.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include "gstappsrc.h"
GST_DEBUG_CATEGORY (app_src_debug);
#define GST_CAT_DEFAULT app_src_debug
static const GstElementDetails app_src_details = GST_ELEMENT_DETAILS ("AppSrc",
"FIXME",
"FIXME",
"autogenerated by makefilter");
enum
{
PROP_0
};
static GstStaticPadTemplate gst_app_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_app_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_app_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_app_src_dispose (GObject * object);
static GstFlowReturn gst_app_src_create (GstPushSrc * psrc, GstBuffer ** buf);
static gboolean gst_app_src_start (GstBaseSrc * psrc);
static gboolean gst_app_src_stop (GstBaseSrc * psrc);
static gboolean gst_app_src_unlock (GstBaseSrc * psrc);
GST_BOILERPLATE (GstAppSrc, gst_app_src, GstPushSrc, GST_TYPE_PUSH_SRC);
static void
gst_app_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
//GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
GST_DEBUG_CATEGORY_INIT (app_src_debug, "appsrc", 0, "appsrc element");
gst_element_class_set_details (element_class, &app_src_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_app_src_template));
}
static void
gst_app_src_class_init (GstAppSrcClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstPushSrcClass *pushsrc_class = (GstPushSrcClass *) klass;
GstBaseSrcClass *basesrc_class = (GstBaseSrcClass *) klass;
gobject_class->set_property = gst_app_src_set_property;
gobject_class->get_property = gst_app_src_get_property;
gobject_class->dispose = gst_app_src_dispose;
pushsrc_class->create = gst_app_src_create;
basesrc_class->start = gst_app_src_start;
basesrc_class->stop = gst_app_src_stop;
basesrc_class->unlock = gst_app_src_unlock;
}
static void
gst_app_src_dispose (GObject * obj)
{
GstAppSrc *appsrc = GST_APP_SRC (obj);
g_mutex_free (appsrc->mutex);
g_cond_free (appsrc->cond);
g_queue_free (appsrc->queue);
}
static void
gst_app_src_init (GstAppSrc * appsrc, GstAppSrcClass * klass)
{
appsrc->mutex = g_mutex_new ();
appsrc->cond = g_cond_new ();
appsrc->queue = g_queue_new ();
}
static void
gst_app_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAppSrc *appsrc = GST_APP_SRC (object);
GST_OBJECT_LOCK (appsrc);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (appsrc);
}
static void
gst_app_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAppSrc *appsrc = GST_APP_SRC (object);
GST_OBJECT_LOCK (appsrc);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (appsrc);
}
static gboolean
gst_app_src_start (GstBaseSrc * psrc)
{
GstAppSrc *appsrc = GST_APP_SRC (psrc);
appsrc->unlock = FALSE;
#if 0
/* FIXME: I don't know if this makes sense */
appsrc->end_of_stream = FALSE;
appsrc->flush = FALSE;
#endif
return TRUE;
}
static gboolean
gst_app_src_stop (GstBaseSrc * psrc)
{
//GstAppSrc *appsrc = GST_APP_SRC(psrc);
return TRUE;
}
static gboolean
gst_app_src_unlock (GstBaseSrc * psrc)
{
GstAppSrc *appsrc = GST_APP_SRC (psrc);
appsrc->unlock = TRUE;
g_cond_signal (appsrc->cond);
return TRUE;
}
static GstFlowReturn
gst_app_src_create (GstPushSrc * psrc, GstBuffer ** buf)
{
GstAppSrc *appsrc = GST_APP_SRC (psrc);
int ret = GST_FLOW_ERROR;
g_mutex_lock (appsrc->mutex);
while (1) {
if (!g_queue_is_empty (appsrc->queue)) {
*buf = g_queue_pop_head (appsrc->queue);
gst_buffer_set_caps (*buf, appsrc->caps);
ret = GST_FLOW_OK;
break;
}
if (appsrc->end_of_stream) {
appsrc->end_of_stream = FALSE;
ret = GST_FLOW_UNEXPECTED;
break;
}
if (appsrc->flush) {
appsrc->flush = FALSE;
/* FIXME: I don't really know how to do this */
break;
}
g_cond_wait (appsrc->cond, appsrc->mutex);
}
g_mutex_unlock (appsrc->mutex);
return ret;
}
/* external API */
void
gst_app_src_push_buffer (GstAppSrc * appsrc, GstBuffer * buffer)
{
g_mutex_lock (appsrc->mutex);
g_queue_push_tail (appsrc->queue, buffer);
g_cond_signal (appsrc->cond);
g_mutex_unlock (appsrc->mutex);
}
void
gst_app_src_set_caps (GstAppSrc * appsrc, GstCaps * caps)
{
gst_caps_replace (&appsrc->caps, caps);
}
void
gst_app_src_flush (GstAppSrc * appsrc)
{
GstBuffer *buffer;
g_mutex_lock (appsrc->mutex);
while ((buffer = g_queue_pop_head (appsrc->queue))) {
gst_buffer_unref (buffer);
}
appsrc->flush = TRUE;
g_cond_signal (appsrc->cond);
g_mutex_unlock (appsrc->mutex);
}
void
gst_app_src_end_of_stream (GstAppSrc * appsrc)
{
g_mutex_lock (appsrc->mutex);
appsrc->end_of_stream = TRUE;
g_cond_signal (appsrc->cond);
g_mutex_unlock (appsrc->mutex);
}
/* GStreamer
* Copyright (C) 2007 David Schleef <ds@schleef.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.
*/
#ifndef _GST_APP_SRC_H_
#define _GST_APP_SRC_H_
#include <gst/gst.h>
#include <gst/base/gstpushsrc.h>
#define GST_TYPE_APP_SRC \
(gst_app_src_get_type())
#define GST_APP_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_APP_SRC,GstAppSrc))
#define GST_APP_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_APP_SRC,GstAppSrcClass))
#define GST_IS_APP_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_APP_SRC))
#define GST_IS_APP_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_APP_SRC))
typedef struct _GstAppSrc GstAppSrc;
typedef struct _GstAppSrcClass GstAppSrcClass;
struct _GstAppSrc
{
GstPushSrc pushsrc;
/*< private >*/
gboolean unlock;
GCond *cond;
GMutex *mutex;
GQueue *queue;
GstCaps *caps;
gboolean end_of_stream;
gboolean flush;
};
struct _GstAppSrcClass
{
GstPushSrcClass pushsrc_class;
};
GType gst_app_src_get_type(void);
GST_DEBUG_CATEGORY_EXTERN (app_src_debug);
void gst_app_src_push_buffer (GstAppSrc *appsrc, GstBuffer *buffer);
void gst_app_src_set_caps (GstAppSrc *appsrc, GstCaps *caps);
void gst_app_src_flush (GstAppSrc *appsrc);
void gst_app_src_end_of_stream (GstAppSrc *appsrc);
#endif
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment