gstreamer/ext/xine/xineinput.c

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/* GStreamer
* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* 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.
*/
#include <gst/gst.h>
#include "gstxine.h"
#include <xine/input_plugin.h>
#include <xine/xine_internal.h>
#include <xine/plugin_catalog.h>
#define GST_TYPE_XINE_INPUT \
(gst_xine_input_get_type())
#define GST_XINE_INPUT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_XINE_INPUT,GstXineInput))
#define GST_XINE_INPUT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_XINE_INPUT, GstXineInputClass))
#define GST_XINE_INPUT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_XINE_INPUT,GstXineInputClass))
#define GST_IS_XINE_INPUT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_XINE_INPUT))
#define GST_IS_XINE_INPUT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_XINE_INPUT))
GType gst_xine_input_get_type (void);
typedef struct _GstXineInput GstXineInput;
typedef struct _GstXineInputClass GstXineInputClass;
struct _GstXineInput
{
GstXine parent;
GstPad *srcpad;
input_plugin_t *input;
gchar *location;
guint blocksize;
};
struct _GstXineInputClass
{
GstXineClass parent_class;
plugin_node_t *plugin_node;
};
/** GstXineInput ***********************************************************/
enum
{
ARG_0,
ARG_LOCATION
};
GST_BOILERPLATE (GstXineInput, gst_xine_input, GstXine, GST_TYPE_XINE);
static void gst_xine_input_dispose (GObject * object);
static void gst_xine_input_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_xine_input_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn
gst_xine_input_change_state (GstElement * element, GstStateChange transition);
static void
gst_xine_input_base_init (gpointer g_class)
{
}
static void
gst_xine_input_class_init (GstXineInputClass * klass)
{
GstElementClass *element = GST_ELEMENT_CLASS (klass);
GObjectClass *object = G_OBJECT_CLASS (klass);
element->change_state = gst_xine_input_change_state;
object->set_property = gst_xine_input_set_property;
object->get_property = gst_xine_input_get_property;
object->dispose = gst_xine_input_dispose;
g_object_class_install_property (object, ARG_LOCATION,
g_param_spec_string ("location", "location", "location",
NULL, G_PARAM_READWRITE));
}
static void
gst_xine_input_init (GstXineInput * xine, GstXineInputClass * g_class)
{
}
static void
gst_xine_input_dispose (GObject * object)
{
GstXineInput *xine = GST_XINE_INPUT (object);
g_free (xine->location);
xine->location = NULL;
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static void
gst_xine_input_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstXineInput *xine = GST_XINE_INPUT (object);
switch (prop_id) {
case ARG_LOCATION:
if (gst_element_get_state (GST_ELEMENT (xine)) != GST_STATE_NULL)
return;
if (xine->location)
g_free (xine->location);
xine->location = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
static void
gst_xine_input_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstXineInput *xine = GST_XINE_INPUT (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, xine->location);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
#define BUFFER_SIZE 4096 /* FIXME: what size? */
static GstData *
gst_xine_input_get (GstPad * pad)
{
GstXineInput *xine =
GST_XINE_INPUT (gst_object_get_parent (GST_OBJECT (pad)));
GstBuffer *buf;
gint real_size, position;
/* FIXME: how does xine figure out EOS? */
position = xine->input->get_current_pos (xine->input);
if (position > 0 && position == xine->input->get_length (xine->input)) {
gst_element_set_eos (GST_ELEMENT (xine));
return GST_DATA (gst_event_new (GST_EVENT_EOS));
}
buf =
gst_pad_alloc_buffer_and_set_caps (xine->srcpad, GST_BUFFER_OFFSET_NONE,
xine->blocksize);
GST_BUFFER_OFFSET (buf) = position;
real_size =
xine->input->read (xine->input, GST_BUFFER_DATA (buf),
GST_BUFFER_MAXSIZE (buf));
GST_BUFFER_SIZE (buf) = real_size;
if (real_size < 0) {
GST_ELEMENT_ERROR (xine, RESOURCE, READ, (NULL), ("error %d reading data",
real_size));
gst_data_unref (GST_DATA (buf));
return NULL;
} else if (real_size == 0) {
buf_element_t *element;
if (xine->input->get_capabilities (xine->input) & INPUT_CAP_BLOCK)
element =
xine->input->read_block (xine->input,
gst_xine_get_stream (GST_XINE (xine))->audio_fifo, xine->blocksize);
if (element == NULL) {
/* FIXME: is this EOS? */
gst_element_set_eos (GST_ELEMENT (xine));
return GST_DATA (gst_event_new (GST_EVENT_EOS));
} else {
GST_BUFFER_SIZE (buf) = element->size;
/* FIXME: put buf_element_t data in buffer */
memcpy (GST_BUFFER_DATA (buf), element->mem, element->size);
element->free_buffer (element);
}
}
GST_BUFFER_OFFSET_END (buf) = xine->input->get_current_pos (xine->input);
return GST_DATA (buf);
}
static GstStateChangeReturn
gst_xine_input_change_state (GstElement * element, GstStateChange transition)
{
GstXineInput *xine = GST_XINE_INPUT (element);
input_class_t *input =
(input_class_t *) GST_XINE_INPUT_GET_CLASS (xine)->plugin_node->
plugin_class;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
xine->input =
input->get_instance (input, gst_xine_get_stream (GST_XINE (xine)),
xine->location);
if (!xine->input)
return GST_STATE_CHANGE_FAILURE;
if (xine->input->open (xine->input) == 0)
return GST_STATE_CHANGE_FAILURE;
xine->blocksize = xine->input->get_blocksize (xine->input);
if (xine->blocksize == 0)
xine->blocksize = BUFFER_SIZE;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* FIXME: reset stream */
break;
case GST_STATE_CHANGE_READY_TO_NULL:
xine->input->dispose (xine->input);
xine->input = NULL;
break;
default:
GST_ERROR_OBJECT (element, "invalid state change");
break;
}
return GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element), GST_STATE_CHANGE_SUCCESS);
}
/** GstXineInput subclasses ************************************************/
static GstStaticPadTemplate any_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate cdda_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) LITTLE_ENDIAN, "
"signed = (boolean) true, "
"width = (int) 16, "
"depth = (int) 16, " "rate = (int) 44100, " "channels = (int) 2")
);
static void
gst_xine_input_subclass_init (gpointer g_class, gpointer class_data)
{
GstXineInputClass *xine_class = GST_XINE_INPUT_CLASS (g_class);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstElementDetails details = GST_ELEMENT_DETAILS (NULL,
"Source",
NULL,
"Benjamin Otte <otte@gnome.org>");
input_class_t *input;
xine_class->plugin_node = class_data;
input = (input_class_t *) xine_class->plugin_node->plugin_class;
details.longname =
g_strdup_printf ("%s xine input", input->get_identifier (input));
details.description = g_strdup_printf ("%s", input->get_description (input));
gst_element_class_set_details (element_class, &details);
g_free (details.longname);
g_free (details.description);
/* FIXME: this is pretty hackish, anyone knows a better idea (xine doesn't) */
if (strcmp (input->get_identifier (input), "cdda") == 0) {
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&cdda_template));
} else {
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&any_template));
}
}
static void
gst_xine_input_sub_init (GTypeInstance * instance, gpointer g_class)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (instance);
GstXineInput *xine = GST_XINE_INPUT (instance);
xine->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"src"), "src");
gst_pad_set_get_function (xine->srcpad, gst_xine_input_get);
gst_element_add_pad (GST_ELEMENT (xine), xine->srcpad);
}
gboolean
gst_xine_input_init_plugin (GstPlugin * plugin)
{
GTypeInfo plugin_info = {
sizeof (GstXineInputClass),
NULL,
NULL,
gst_xine_input_subclass_init,
NULL,
NULL,
sizeof (GstXineInput),
0,
gst_xine_input_sub_init,
};
plugin_node_t *node;
GstXineClass *klass;
klass = g_type_class_ref (GST_TYPE_XINE);
node = xine_list_first_content (klass->xine->plugin_catalog->input);
while (node) {
gchar *plugin_name = g_strdup_printf ("xinesrc_%s", node->info->id);
gchar *type_name = g_strdup_printf ("GstXineInput%s", node->info->id);
GType type;
plugin_info.class_data = node;
type =
g_type_register_static (GST_TYPE_XINE_INPUT, type_name, &plugin_info,
0);
g_free (type_name);
if (!gst_element_register (plugin, plugin_name, GST_RANK_MARGINAL, type)) {
g_free (plugin_name);
return FALSE;
}
g_free (plugin_name);
node = xine_list_next_content (klass->xine->plugin_catalog->input);
}
g_type_class_unref (klass);
return TRUE;
}