gstreamer/gst/playback/gststreaminfo.c
Ronald S. Bultje 14656be9b5 gst/playback/: Adding stream selection support plus required properties for applications to use this. Fully fixes #10...
Original commit message from CVS:
* gst/playback/Makefile.am:
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(group_destroy), (group_commit), (group_is_muted),
(gen_preroll_element), (add_stream), (unknown_type),
(probe_triggered), (preroll_unlinked), (mute_stream),
(silence_stream), (new_decoded_pad), (setup_substreams),
(setup_source), (get_active_source), (mute_group_type),
(muted_group_change_state), (set_active_source),
(gst_play_base_bin_set_property), (gst_play_base_bin_get_property),
(play_base_eos), (gst_play_base_bin_change_state):
* gst/playback/gstplaybasebin.h:
* gst/playback/gstplaybin.c: (add_sink), (setup_sinks):
* gst/playback/gststreaminfo.c: (gst_stream_info_class_init),
(gst_stream_info_dispose), (stream_info_mute_pad),
(stream_info_change_state), (gst_stream_info_set_mute):
* gst/playback/gststreamselector.c: (gst_stream_selector_get_type),
(gst_stream_selector_base_init), (gst_stream_selector_class_init),
(gst_stream_selector_init), (gst_stream_selector_dispose),
(gst_stream_selector_get_linked_pad),
(gst_stream_selector_get_caps), (gst_stream_selector_link),
(gst_stream_selector_get_linked_pads),
(gst_stream_selector_request_new_pad), (gst_stream_selector_chain):
* gst/playback/gststreamselector.h:
Adding stream selection support plus required properties for
applications to use this. Fully fixes #100931.
2005-01-08 18:31:22 +00:00

353 lines
10 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#include <gst/gst.h>
#include "gststreaminfo.h"
GST_DEBUG_CATEGORY_STATIC (gst_streaminfo_debug);
#define GST_CAT_DEFAULT gst_streaminfo_debug
/* props */
enum
{
ARG_0,
ARG_PAD,
ARG_TYPE,
ARG_DECODER,
ARG_MUTE,
ARG_CAPS
};
/* signals */
enum
{
SIGNAL_MUTED,
LAST_SIGNAL
};
static guint gst_stream_info_signals[LAST_SIGNAL] = { 0 };
#define GST_TYPE_STREAM_TYPE (gst_stream_type_get_type())
static GType
gst_stream_type_get_type (void)
{
static GType stream_type_type = 0;
static GEnumValue stream_type[] = {
{GST_STREAM_TYPE_UNKNOWN, "GST_STREAM_TYPE_UNKNOWN", "Unknown stream"},
{GST_STREAM_TYPE_AUDIO, "GST_STREAM_TYPE_AUDIO", "Audio stream"},
{GST_STREAM_TYPE_VIDEO, "GST_STREAM_TYPE_VIDEO", "Video stream"},
{GST_STREAM_TYPE_TEXT, "GST_STREAM_TYPE_TEXT", "Text stream"},
{GST_STREAM_TYPE_ELEMENT, "GST_STREAM_TYPE_ELEMENT",
"Stream handled by element"},
{0, NULL, NULL},
};
if (!stream_type_type) {
stream_type_type = g_enum_register_static ("GstStreamType", stream_type);
}
return stream_type_type;
}
static void gst_stream_info_class_init (GstStreamInfoClass * klass);
static void gst_stream_info_init (GstStreamInfo * stream_info);
static void gst_stream_info_dispose (GObject * object);
static void stream_info_change_state (GstElement * element,
gint old_state, gint new_state, gpointer data);
static void gst_stream_info_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * spec);
static void gst_stream_info_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * spec);
static GObjectClass *parent_class;
//static guint gst_stream_info_signals[LAST_SIGNAL] = { 0 };
GType
gst_stream_info_get_type (void)
{
static GType gst_stream_info_type = 0;
if (!gst_stream_info_type) {
static const GTypeInfo gst_stream_info_info = {
sizeof (GstStreamInfoClass),
NULL,
NULL,
(GClassInitFunc) gst_stream_info_class_init,
NULL,
NULL,
sizeof (GstStreamInfo),
0,
(GInstanceInitFunc) gst_stream_info_init,
NULL
};
gst_stream_info_type = g_type_register_static (G_TYPE_OBJECT,
"GstStreamInfo", &gst_stream_info_info, 0);
}
return gst_stream_info_type;
}
static void
gst_stream_info_class_init (GstStreamInfoClass * klass)
{
GObjectClass *gobject_klass;
gobject_klass = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
gobject_klass->set_property = gst_stream_info_set_property;
gobject_klass->get_property = gst_stream_info_get_property;
g_object_class_install_property (gobject_klass, ARG_PAD,
g_param_spec_object ("object", "object",
"Source Pad or object of the stream", GST_TYPE_OBJECT,
G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, ARG_TYPE,
g_param_spec_enum ("type", "Type", "Type of the stream",
GST_TYPE_STREAM_TYPE, GST_STREAM_TYPE_UNKNOWN, G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, ARG_DECODER,
g_param_spec_string ("decoder", "Decoder",
"The decoder used to decode the stream", NULL, G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, ARG_MUTE,
g_param_spec_boolean ("mute", "Mute", "Mute or unmute this stream", FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, ARG_CAPS,
g_param_spec_boxed ("caps", "Capabilities",
"Capabilities (or type) of this stream", GST_TYPE_CAPS,
G_PARAM_READABLE));
gst_stream_info_signals[SIGNAL_MUTED] =
g_signal_new ("muted", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstStreamInfoClass, muted), NULL, NULL,
gst_marshal_VOID__BOOLEAN, G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_stream_info_dispose);
GST_DEBUG_CATEGORY_INIT (gst_streaminfo_debug, "streaminfo", 0,
"Playbin Stream Info");
}
static void
gst_stream_info_init (GstStreamInfo * stream_info)
{
stream_info->object = NULL;
stream_info->origin = NULL;
stream_info->type = GST_STREAM_TYPE_UNKNOWN;
stream_info->decoder = NULL;
stream_info->mute = FALSE;
stream_info->caps = NULL;
}
GstStreamInfo *
gst_stream_info_new (GstObject * object,
GstStreamType type, const gchar * decoder, const GstCaps * caps)
{
GstStreamInfo *info;
info = g_object_new (GST_TYPE_STREAM_INFO, NULL);
gst_object_ref (object);
info->object = object;
info->type = type;
info->decoder = g_strdup (decoder);
info->origin = object;
if (caps) {
info->caps = gst_caps_copy (caps);
}
return info;
}
static void
gst_stream_info_dispose (GObject * object)
{
GstStreamInfo *stream_info;
stream_info = GST_STREAM_INFO (object);
if (stream_info->object) {
if (GST_PAD_REALIZE (stream_info->object)) {
g_signal_handlers_disconnect_by_func (gst_pad_get_parent ((GstPad *)
GST_PAD_REALIZE (stream_info->object)),
G_CALLBACK (stream_info_change_state), stream_info);
}
gst_object_unref (stream_info->object);
stream_info->object = NULL;
}
stream_info->origin = NULL;
stream_info->type = GST_STREAM_TYPE_UNKNOWN;
g_free (stream_info->decoder);
stream_info->decoder = NULL;
if (stream_info->caps) {
gst_caps_free (stream_info->caps);
stream_info->caps = NULL;
}
if (G_OBJECT_CLASS (parent_class)->dispose) {
G_OBJECT_CLASS (parent_class)->dispose (object);
}
}
static void
stream_info_mute_pad (GstStreamInfo * stream_info, GstPad * pad, gboolean mute)
{
GList *int_links;
gboolean activate = !mute;
gchar *debug_str = (activate ? "activate" : "inactivate");
GST_DEBUG_OBJECT (stream_info, "%s %s:%s", debug_str,
GST_DEBUG_PAD_NAME (pad));
gst_pad_set_active (pad, activate);
if (gst_pad_get_parent (pad)->numsrcpads > 1)
return;
for (int_links = gst_pad_get_internal_links (pad);
int_links; int_links = g_list_next (int_links)) {
GstPad *pad = GST_PAD (int_links->data);
GstPad *peer = gst_pad_get_peer (pad);
GstElement *peer_elem = peer ? gst_pad_get_parent (peer) : NULL;
GST_DEBUG_OBJECT (stream_info, "%s internal pad %s:%s",
debug_str, GST_DEBUG_PAD_NAME (pad));
gst_pad_set_active (pad, activate);
if (peer_elem && peer_elem->numsrcpads == 1) {
GST_DEBUG_OBJECT (stream_info, "recursing element %s on pad %s:%s",
gst_element_get_name (peer_elem), GST_DEBUG_PAD_NAME (peer));
stream_info_mute_pad (stream_info, peer, mute);
} else if (peer) {
GST_DEBUG_OBJECT (stream_info, "%s final pad %s:%s",
debug_str, GST_DEBUG_PAD_NAME (peer));
gst_pad_set_active (peer, activate);
}
}
}
static void
stream_info_change_state (GstElement * element,
gint old_state, gint new_state, gpointer data)
{
GstStreamInfo *stream_info = data;
if (new_state == GST_STATE_PLAYING) {
/* state change will annoy us */
g_return_if_fail (stream_info->mute == TRUE);
GST_DEBUG_OBJECT (stream_info, "Re-muting pads after state-change");
stream_info_mute_pad (stream_info, GST_PAD (stream_info->object), TRUE);
}
}
gboolean
gst_stream_info_set_mute (GstStreamInfo * stream_info, gboolean mute)
{
g_return_val_if_fail (GST_IS_STREAM_INFO (stream_info), FALSE);
if (stream_info->type == GST_STREAM_TYPE_ELEMENT) {
g_warning ("cannot mute element stream");
return FALSE;
}
if (mute != stream_info->mute) {
stream_info->mute = mute;
stream_info_mute_pad (stream_info,
(GstPad *) GST_PAD_REALIZE (stream_info->object), mute);
if (mute) {
g_signal_connect (gst_pad_get_parent ((GstPad *)
GST_PAD_REALIZE (stream_info->object)), "state-change",
G_CALLBACK (stream_info_change_state), stream_info);
} else {
g_signal_handlers_disconnect_by_func (gst_pad_get_parent ((GstPad *)
GST_PAD_REALIZE (stream_info->object)),
G_CALLBACK (stream_info_change_state), stream_info);
}
}
return TRUE;
}
gboolean
gst_stream_info_is_mute (GstStreamInfo * stream_info)
{
g_return_val_if_fail (GST_IS_STREAM_INFO (stream_info), TRUE);
return stream_info->mute;
}
static void
gst_stream_info_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstStreamInfo *stream_info;
g_return_if_fail (GST_IS_STREAM_INFO (object));
stream_info = GST_STREAM_INFO (object);
switch (prop_id) {
case ARG_MUTE:
gst_stream_info_set_mute (stream_info, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_stream_info_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstStreamInfo *stream_info;
g_return_if_fail (GST_IS_STREAM_INFO (object));
stream_info = GST_STREAM_INFO (object);
switch (prop_id) {
case ARG_PAD:
g_value_set_object (value, stream_info->object);
break;
case ARG_TYPE:
g_value_set_enum (value, stream_info->type);
break;
case ARG_DECODER:
g_value_set_string (value, stream_info->decoder);
break;
case ARG_MUTE:
g_value_set_boolean (value, stream_info->mute);
break;
case ARG_CAPS:
g_value_set_boxed (value, stream_info->caps);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}