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Adding my work in progress rewrite from scratch of libgstplay.

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Original commit message from CVS:
Adding my work in progress rewrite from scratch of libgstplay.
This commit is contained in:
Julien Moutte 2003-12-07 13:29:10 +00:00
parent 9bda5831b8
commit dbe874d5a0
4 changed files with 1030 additions and 0 deletions
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439
gst-libs/gst/play/gstplay.c Normal file
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/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
*
* 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 "gstplay.h"
#include <gst/xoverlay/xoverlay.h>
#include <gst/navigation/navigation.h>
#include <gst/mixer/mixer.h>
enum
{
TIME_TICK,
STREAM_LENGTH,
HAVE_VIDEO_SIZE,
LAST_SIGNAL
};
static guint gst_play_signals[LAST_SIGNAL] = { 0 };
static GstPipelineClass *parent_class = NULL;
/* ======================================================= */
/* */
/* Private Methods */
/* */
/* ======================================================= */
static gboolean
gst_play_pipeline_setup (GstPlay *play)
{
GstElement *work_thread, *video_thread;
GstElement *video_queue, *video_colorspace, *video_scaler, *video_sink;
GstElement *audio_thread, *audio_queue, *audio_volume, *audio_sink;
GstElement *audio_tee, *vis_thread, *vis_queue;
GstPad *audio_tee_pad1, *audio_tee_pad2, *vis_thread_pad, *audio_sink_pad;
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
work_thread = gst_thread_new ("work_thread");
if (!GST_IS_THREAD (work_thread))
return FALSE;
g_hash_table_insert (play->elements, "work_thread", work_thread);
gst_bin_add (GST_BIN (play), work_thread);
/* Creating our video output bin
{ queue ! colorspace ! videoscale ! fakesink } */
video_thread = gst_thread_new ("video_thread");
if (!GST_IS_THREAD (video_thread))
return FALSE;
g_hash_table_insert (play->elements, "video_thread", video_thread);
gst_bin_add (GST_BIN (work_thread), video_thread);
/* Buffer queue for our video thread */
video_queue = gst_element_factory_make ("queue", "video_queue");
if (!GST_IS_ELEMENT (video_queue))
return FALSE;
g_hash_table_insert (play->elements, "video_queue", video_queue);
/* Colorspace conversion */
/* FIXME: Use ffcolorspace and fallback to Hermes on failure ?*/
video_colorspace = gst_element_factory_make ("colorspace",
"video_colorspace");
if (!GST_IS_ELEMENT (video_colorspace))
return FALSE;
g_hash_table_insert (play->elements, "video_colorspace",
video_colorspace);
/* Software scaling of video stream */
video_scaler = gst_element_factory_make ("videoscale", "video_scaler");
if (!GST_IS_ELEMENT (video_scaler))
return FALSE;
g_hash_table_insert (play->elements, "video_scaler", video_scaler);
/* Placeholder for future video sink bin */
video_sink = gst_element_factory_make ("fakesink", "video_sink");
if (!GST_IS_ELEMENT (video_sink))
return FALSE;
g_hash_table_insert (play->elements, "video_sink", video_sink);
/* Linking, Adding, Ghosting */
gst_element_link_many (video_queue, video_colorspace,
video_scaler, video_sink, NULL);
gst_bin_add_many (GST_BIN (video_thread), video_queue, video_colorspace,
video_scaler, video_sink, NULL);
gst_element_add_ghost_pad (video_thread,
gst_element_get_pad (video_queue, "sink"),
"sink");
/* Creating our audio output bin
{ queue ! volume ! tee ! { queue ! goom } ! fakesink } */
audio_thread = gst_thread_new ("audio_thread");
if (!GST_IS_THREAD (audio_thread))
return FALSE;
g_hash_table_insert (play->elements, "audio_thread", audio_thread);
gst_bin_add (GST_BIN (work_thread), audio_thread);
/* Buffer queue for our audio thread */
audio_queue = gst_element_factory_make ("queue", "audio_queue");
if (!GST_IS_ELEMENT (audio_queue))
return FALSE;
g_hash_table_insert (play->elements, "audio_queue", audio_queue);
/* Volume control */
audio_volume = gst_element_factory_make ("volume", "audio_volume");
if (!GST_IS_ELEMENT (audio_volume))
return FALSE;
g_hash_table_insert (play->elements, "audio_volume", audio_volume);
/* Duplicate audio signal to sink and visualization thread */
audio_tee = gst_element_factory_make ("tee", "audio_tee");
if (!GST_IS_ELEMENT (audio_tee))
return FALSE;
audio_tee_pad1 = gst_element_get_request_pad (audio_tee, "src%d");
audio_tee_pad2 = gst_element_get_request_pad (audio_tee, "src%d");
g_hash_table_insert (play->elements, "audio_tee_pad1", audio_tee_pad1);
g_hash_table_insert (play->elements, "audio_tee_pad2", audio_tee_pad2);
g_hash_table_insert (play->elements, "audio_tee", audio_tee);
/* Placeholder for future audio sink bin */
audio_sink = gst_element_factory_make ("fakesink", "audio_sink");
if (!GST_IS_ELEMENT (audio_sink))
return FALSE;
audio_sink_pad = gst_element_get_pad (audio_sink, "sink");
g_hash_table_insert (play->elements, "audio_sink_pad", audio_sink_pad);
g_hash_table_insert (play->elements, "audio_sink", audio_sink);
/* Visualization thread */
vis_thread = gst_thread_new ("vis_thread");
if (!GST_IS_THREAD (vis_thread))
return FALSE;
g_hash_table_insert (play->elements, "vis_thread", vis_thread);
/* Buffer queue for our visualization thread */
vis_queue = gst_element_factory_make ("queue", "vis_queue");
if (!GST_IS_ELEMENT (vis_queue))
return FALSE;
g_hash_table_insert (play->elements, "vis_queue", vis_queue);
/* Adding, Ghosting in visualization */
gst_bin_add (GST_BIN (vis_thread), vis_queue);
vis_thread_pad = gst_element_add_ghost_pad (vis_thread,
gst_element_get_pad (vis_queue, "sink"),
"sink");
g_hash_table_insert (play->elements, "vis_thread_pad", vis_thread_pad);
/* Linking, Adding, Ghosting in audio */
gst_element_link_many (audio_queue, audio_volume, audio_tee, NULL);
gst_pad_link (audio_tee_pad1, audio_sink_pad);
gst_bin_add_many (GST_BIN (audio_thread), audio_queue, audio_volume,
audio_tee, vis_thread, audio_sink);
gst_element_add_ghost_pad (audio_thread,
gst_element_get_pad (audio_queue, "sink"),
"sink");
return TRUE;
}
/* =========================================== */
/* */
/* Interfaces */
/* */
/* =========================================== */
static gboolean
gst_play_interface_supported (GstInterface *iface, GType type)
{
g_assert (type == GST_TYPE_NAVIGATION ||
type == GST_TYPE_X_OVERLAY ||
type == GST_TYPE_MIXER);
return TRUE;
}
static void
gst_play_interface_init (GstInterfaceClass *klass)
{
klass->supported = gst_play_interface_supported;
}
static void
gst_play_navigation_send_event (GstNavigation *navigation,
GstStructure *structure)
{
}
static void
gst_play_navigation_init (GstNavigationInterface *iface)
{
iface->send_event = gst_play_navigation_send_event;
}
static void
gst_play_set_xwindow_id (GstXOverlay *overlay, XID xwindow_id)
{
}
static void
gst_play_xoverlay_init (GstXOverlayClass *iface)
{
iface->set_xwindow_id = gst_play_set_xwindow_id;
}
static void
gst_play_mixer_init (GstMixerClass *klass)
{
klass->list_tracks = NULL;
klass->set_volume = NULL;
klass->get_volume = NULL;
klass->set_mute = NULL;
klass->set_record = NULL;
}
/* =========================================== */
/* */
/* Init & Dispose & Class init */
/* */
/* =========================================== */
static void
gst_play_dispose (GObject *object)
{
GstPlay *play;
g_return_if_fail (object != NULL);
g_return_if_fail (GST_IS_PLAY (object));
play = GST_PLAY (object);
if (play->location)
{
g_free (play->location);
play->location = NULL;
}
if (play->elements)
{
g_hash_table_destroy (play->elements);
play->elements = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_play_init (GstPlay *play)
{
play->location = NULL;
play->elements = g_hash_table_new (g_str_hash, g_str_equal);
if (!gst_play_pipeline_setup (play))
g_warning ("libgstplay: failed initializing pipeline");
}
static void
gst_play_class_init (GstPlayClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = gst_play_dispose;
gst_play_signals[TIME_TICK] =
g_signal_new ("time_tick", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, time_tick), NULL, NULL,
gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64);
gst_play_signals[STREAM_LENGTH] =
g_signal_new ("stream_length", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, stream_length), NULL, NULL,
gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64);
gst_play_signals[HAVE_VIDEO_SIZE] =
g_signal_new ("have_video_size", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, have_video_size), NULL, NULL,
gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
G_TYPE_INT, G_TYPE_INT);
}
/* ======================================================= */
/* */
/* Public Methods */
/* */
/* ======================================================= */
/**
* gst_play_set_location:
* @play: a #GstPlay.
* @location: a const #char* indicating location to play
*
* Set location of @play to @location.
*
* Returns: TRUE if location was set successfully.
*/
gboolean
gst_play_set_location (GstPlay *play, const char *location)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
if (play->location)
g_free (play->location);
play->location = g_strdup (location);
if (GST_STATE (GST_ELEMENT (play)) != GST_STATE_READY)
gst_element_set_state (GST_ELEMENT (play), GST_STATE_READY);
return TRUE;
}
/**
* gst_play_get_location:
* @play: a #GstPlay.
*
* Get current location of @play.
*
* Returns: a const #char* pointer to current location.
*/
char *
gst_play_get_location (GstPlay *play)
{
g_return_val_if_fail (play != NULL, NULL);
g_return_val_if_fail (GST_IS_PLAY (play), NULL);
return g_strdup (play->location);
}
/**
* gst_play_seek_to_time:
* @play: a #GstPlay.
* @time_nanos: a #gint64 indicating a time position.
*
* Performs a seek on @play until @time_nanos.
*/
gboolean
gst_play_seek_to_time (GstPlay * play, gint64 time_nanos)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
return TRUE;
}
/* =========================================== */
/* */
/* Object typing & Creation */
/* */
/* =========================================== */
GType
gst_play_get_type (void)
{
static GType play_type = 0;
if (!play_type)
{
static const GTypeInfo play_info = {
sizeof (GstPlayClass),
NULL,
NULL,
(GClassInitFunc) gst_play_class_init,
NULL,
NULL,
sizeof (GstPlay),
0,
(GInstanceInitFunc) gst_play_init,
NULL
};
static const GInterfaceInfo iface_info = {
(GInterfaceInitFunc) gst_play_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo navigation_info = {
(GInterfaceInitFunc) gst_play_navigation_init,
NULL,
NULL,
};
static const GInterfaceInfo overlay_info = {
(GInterfaceInitFunc) gst_play_xoverlay_init,
NULL,
NULL,
};
static const GInterfaceInfo mixer_info = {
(GInterfaceInitFunc) gst_play_mixer_init,
NULL,
NULL,
};
play_type = g_type_register_static (GST_TYPE_PIPELINE, "GstPlay",
&play_info, 0);
g_type_add_interface_static (play_type, GST_TYPE_INTERFACE,
&iface_info);
g_type_add_interface_static (play_type, GST_TYPE_NAVIGATION,
&navigation_info);
g_type_add_interface_static (play_type, GST_TYPE_X_OVERLAY,
&overlay_info);
g_type_add_interface_static (play_type, GST_TYPE_MIXER,
&mixer_info);
}
return play_type;
}

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gst-libs/gst/play/gstplay.h Normal file
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/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
*
* 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_PLAY_H__
#define __GST_PLAY_H__
#include <gst/gstpipeline.h>
#define GST_TYPE_PLAY (gst_play_get_type())
#define GST_PLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PLAY, GstPlay))
#define GST_PLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PLAY, GstPlayClass))
#define GST_IS_PLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PLAY))
#define GST_IS_PLAY_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PLAY))
#define GST_PLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PLAY, GstPlayClass))
typedef struct _GstPlay GstPlay;
typedef struct _GstPlayClass GstPlayClass;
struct _GstPlay
{
GstPipeline pipeline;
char *location;
GHashTable *elements;
GST_OBJECT_PADDING
};
struct _GstPlayClass
{
GstPipelineClass parent_class;
void (*time_tick) (GstPlay *play, gint64 time_nanos);
void (*stream_length) (GstPlay *play, gint64 length_nanos);
void (*have_video_size) (GstPlay *play, gint width, gint height);
GST_CLASS_PADDING
};
GType gst_play_get_type (void);
gboolean gst_play_set_video_sink (GstPlay *play,
GstElement *video_sink);
gboolean gst_play_set_audio_sink (GstPlay *play,
GstElement *audio_sink);
gboolean gst_play_set_visualization (GstPlay *play,
GstElement *element);
gboolean gst_play_connect_visualization (GstPlay *play,
gboolean connect);
gboolean gst_play_set_location (GstPlay *play,
const char *location);
char * gst_play_get_location (GstPlay *play);
gboolean gst_play_seek_to_time (GstPlay *play,
gint64 time_nanos);
#endif /* __GST_PLAY_H__ */

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/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
*
* 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 "gstplay.h"
#include <gst/xoverlay/xoverlay.h>
#include <gst/navigation/navigation.h>
#include <gst/mixer/mixer.h>
enum
{
TIME_TICK,
STREAM_LENGTH,
HAVE_VIDEO_SIZE,
LAST_SIGNAL
};
static guint gst_play_signals[LAST_SIGNAL] = { 0 };
static GstPipelineClass *parent_class = NULL;
/* ======================================================= */
/* */
/* Private Methods */
/* */
/* ======================================================= */
static gboolean
gst_play_pipeline_setup (GstPlay *play)
{
GstElement *work_thread, *video_thread;
GstElement *video_queue, *video_colorspace, *video_scaler, *video_sink;
GstElement *audio_thread, *audio_queue, *audio_volume, *audio_sink;
GstElement *audio_tee, *vis_thread, *vis_queue;
GstPad *audio_tee_pad1, *audio_tee_pad2, *vis_thread_pad, *audio_sink_pad;
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
work_thread = gst_thread_new ("work_thread");
if (!GST_IS_THREAD (work_thread))
return FALSE;
g_hash_table_insert (play->elements, "work_thread", work_thread);
gst_bin_add (GST_BIN (play), work_thread);
/* Creating our video output bin
{ queue ! colorspace ! videoscale ! fakesink } */
video_thread = gst_thread_new ("video_thread");
if (!GST_IS_THREAD (video_thread))
return FALSE;
g_hash_table_insert (play->elements, "video_thread", video_thread);
gst_bin_add (GST_BIN (work_thread), video_thread);
/* Buffer queue for our video thread */
video_queue = gst_element_factory_make ("queue", "video_queue");
if (!GST_IS_ELEMENT (video_queue))
return FALSE;
g_hash_table_insert (play->elements, "video_queue", video_queue);
/* Colorspace conversion */
/* FIXME: Use ffcolorspace and fallback to Hermes on failure ?*/
video_colorspace = gst_element_factory_make ("colorspace",
"video_colorspace");
if (!GST_IS_ELEMENT (video_colorspace))
return FALSE;
g_hash_table_insert (play->elements, "video_colorspace",
video_colorspace);
/* Software scaling of video stream */
video_scaler = gst_element_factory_make ("videoscale", "video_scaler");
if (!GST_IS_ELEMENT (video_scaler))
return FALSE;
g_hash_table_insert (play->elements, "video_scaler", video_scaler);
/* Placeholder for future video sink bin */
video_sink = gst_element_factory_make ("fakesink", "video_sink");
if (!GST_IS_ELEMENT (video_sink))
return FALSE;
g_hash_table_insert (play->elements, "video_sink", video_sink);
/* Linking, Adding, Ghosting */
gst_element_link_many (video_queue, video_colorspace,
video_scaler, video_sink, NULL);
gst_bin_add_many (GST_BIN (video_thread), video_queue, video_colorspace,
video_scaler, video_sink, NULL);
gst_element_add_ghost_pad (video_thread,
gst_element_get_pad (video_queue, "sink"),
"sink");
/* Creating our audio output bin
{ queue ! volume ! tee ! { queue ! goom } ! fakesink } */
audio_thread = gst_thread_new ("audio_thread");
if (!GST_IS_THREAD (audio_thread))
return FALSE;
g_hash_table_insert (play->elements, "audio_thread", audio_thread);
gst_bin_add (GST_BIN (work_thread), audio_thread);
/* Buffer queue for our audio thread */
audio_queue = gst_element_factory_make ("queue", "audio_queue");
if (!GST_IS_ELEMENT (audio_queue))
return FALSE;
g_hash_table_insert (play->elements, "audio_queue", audio_queue);
/* Volume control */
audio_volume = gst_element_factory_make ("volume", "audio_volume");
if (!GST_IS_ELEMENT (audio_volume))
return FALSE;
g_hash_table_insert (play->elements, "audio_volume", audio_volume);
/* Duplicate audio signal to sink and visualization thread */
audio_tee = gst_element_factory_make ("tee", "audio_tee");
if (!GST_IS_ELEMENT (audio_tee))
return FALSE;
audio_tee_pad1 = gst_element_get_request_pad (audio_tee, "src%d");
audio_tee_pad2 = gst_element_get_request_pad (audio_tee, "src%d");
g_hash_table_insert (play->elements, "audio_tee_pad1", audio_tee_pad1);
g_hash_table_insert (play->elements, "audio_tee_pad2", audio_tee_pad2);
g_hash_table_insert (play->elements, "audio_tee", audio_tee);
/* Placeholder for future audio sink bin */
audio_sink = gst_element_factory_make ("fakesink", "audio_sink");
if (!GST_IS_ELEMENT (audio_sink))
return FALSE;
audio_sink_pad = gst_element_get_pad (audio_sink, "sink");
g_hash_table_insert (play->elements, "audio_sink_pad", audio_sink_pad);
g_hash_table_insert (play->elements, "audio_sink", audio_sink);
/* Visualization thread */
vis_thread = gst_thread_new ("vis_thread");
if (!GST_IS_THREAD (vis_thread))
return FALSE;
g_hash_table_insert (play->elements, "vis_thread", vis_thread);
/* Buffer queue for our visualization thread */
vis_queue = gst_element_factory_make ("queue", "vis_queue");
if (!GST_IS_ELEMENT (vis_queue))
return FALSE;
g_hash_table_insert (play->elements, "vis_queue", vis_queue);
/* Adding, Ghosting in visualization */
gst_bin_add (GST_BIN (vis_thread), vis_queue);
vis_thread_pad = gst_element_add_ghost_pad (vis_thread,
gst_element_get_pad (vis_queue, "sink"),
"sink");
g_hash_table_insert (play->elements, "vis_thread_pad", vis_thread_pad);
/* Linking, Adding, Ghosting in audio */
gst_element_link_many (audio_queue, audio_volume, audio_tee, NULL);
gst_pad_link (audio_tee_pad1, audio_sink_pad);
gst_bin_add_many (GST_BIN (audio_thread), audio_queue, audio_volume,
audio_tee, vis_thread, audio_sink);
gst_element_add_ghost_pad (audio_thread,
gst_element_get_pad (audio_queue, "sink"),
"sink");
return TRUE;
}
/* =========================================== */
/* */
/* Interfaces */
/* */
/* =========================================== */
static gboolean
gst_play_interface_supported (GstInterface *iface, GType type)
{
g_assert (type == GST_TYPE_NAVIGATION ||
type == GST_TYPE_X_OVERLAY ||
type == GST_TYPE_MIXER);
return TRUE;
}
static void
gst_play_interface_init (GstInterfaceClass *klass)
{
klass->supported = gst_play_interface_supported;
}
static void
gst_play_navigation_send_event (GstNavigation *navigation,
GstStructure *structure)
{
}
static void
gst_play_navigation_init (GstNavigationInterface *iface)
{
iface->send_event = gst_play_navigation_send_event;
}
static void
gst_play_set_xwindow_id (GstXOverlay *overlay, XID xwindow_id)
{
}
static void
gst_play_xoverlay_init (GstXOverlayClass *iface)
{
iface->set_xwindow_id = gst_play_set_xwindow_id;
}
static void
gst_play_mixer_init (GstMixerClass *klass)
{
klass->list_tracks = NULL;
klass->set_volume = NULL;
klass->get_volume = NULL;
klass->set_mute = NULL;
klass->set_record = NULL;
}
/* =========================================== */
/* */
/* Init & Dispose & Class init */
/* */
/* =========================================== */
static void
gst_play_dispose (GObject *object)
{
GstPlay *play;
g_return_if_fail (object != NULL);
g_return_if_fail (GST_IS_PLAY (object));
play = GST_PLAY (object);
if (play->location)
{
g_free (play->location);
play->location = NULL;
}
if (play->elements)
{
g_hash_table_destroy (play->elements);
play->elements = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_play_init (GstPlay *play)
{
play->location = NULL;
play->elements = g_hash_table_new (g_str_hash, g_str_equal);
if (!gst_play_pipeline_setup (play))
g_warning ("libgstplay: failed initializing pipeline");
}
static void
gst_play_class_init (GstPlayClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = gst_play_dispose;
gst_play_signals[TIME_TICK] =
g_signal_new ("time_tick", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, time_tick), NULL, NULL,
gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64);
gst_play_signals[STREAM_LENGTH] =
g_signal_new ("stream_length", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, stream_length), NULL, NULL,
gst_marshal_VOID__INT64, G_TYPE_NONE, 1, G_TYPE_INT64);
gst_play_signals[HAVE_VIDEO_SIZE] =
g_signal_new ("have_video_size", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, have_video_size), NULL, NULL,
gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
G_TYPE_INT, G_TYPE_INT);
}
/* ======================================================= */
/* */
/* Public Methods */
/* */
/* ======================================================= */
/**
* gst_play_set_location:
* @play: a #GstPlay.
* @location: a const #char* indicating location to play
*
* Set location of @play to @location.
*
* Returns: TRUE if location was set successfully.
*/
gboolean
gst_play_set_location (GstPlay *play, const char *location)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
if (play->location)
g_free (play->location);
play->location = g_strdup (location);
if (GST_STATE (GST_ELEMENT (play)) != GST_STATE_READY)
gst_element_set_state (GST_ELEMENT (play), GST_STATE_READY);
return TRUE;
}
/**
* gst_play_get_location:
* @play: a #GstPlay.
*
* Get current location of @play.
*
* Returns: a const #char* pointer to current location.
*/
char *
gst_play_get_location (GstPlay *play)
{
g_return_val_if_fail (play != NULL, NULL);
g_return_val_if_fail (GST_IS_PLAY (play), NULL);
return g_strdup (play->location);
}
/**
* gst_play_seek_to_time:
* @play: a #GstPlay.
* @time_nanos: a #gint64 indicating a time position.
*
* Performs a seek on @play until @time_nanos.
*/
gboolean
gst_play_seek_to_time (GstPlay * play, gint64 time_nanos)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
return TRUE;
}
/* =========================================== */
/* */
/* Object typing & Creation */
/* */
/* =========================================== */
GType
gst_play_get_type (void)
{
static GType play_type = 0;
if (!play_type)
{
static const GTypeInfo play_info = {
sizeof (GstPlayClass),
NULL,
NULL,
(GClassInitFunc) gst_play_class_init,
NULL,
NULL,
sizeof (GstPlay),
0,
(GInstanceInitFunc) gst_play_init,
NULL
};
static const GInterfaceInfo iface_info = {
(GInterfaceInitFunc) gst_play_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo navigation_info = {
(GInterfaceInitFunc) gst_play_navigation_init,
NULL,
NULL,
};
static const GInterfaceInfo overlay_info = {
(GInterfaceInitFunc) gst_play_xoverlay_init,
NULL,
NULL,
};
static const GInterfaceInfo mixer_info = {
(GInterfaceInitFunc) gst_play_mixer_init,
NULL,
NULL,
};
play_type = g_type_register_static (GST_TYPE_PIPELINE, "GstPlay",
&play_info, 0);
g_type_add_interface_static (play_type, GST_TYPE_INTERFACE,
&iface_info);
g_type_add_interface_static (play_type, GST_TYPE_NAVIGATION,
&navigation_info);
g_type_add_interface_static (play_type, GST_TYPE_X_OVERLAY,
&overlay_info);
g_type_add_interface_static (play_type, GST_TYPE_MIXER,
&mixer_info);
}
return play_type;
}

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gst-libs/gst/play/play.h Normal file
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/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
*
* 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_PLAY_H__
#define __GST_PLAY_H__
#include <gst/gstpipeline.h>
#define GST_TYPE_PLAY (gst_play_get_type())
#define GST_PLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PLAY, GstPlay))
#define GST_PLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PLAY, GstPlayClass))
#define GST_IS_PLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PLAY))
#define GST_IS_PLAY_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PLAY))
#define GST_PLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PLAY, GstPlayClass))
typedef struct _GstPlay GstPlay;
typedef struct _GstPlayClass GstPlayClass;
struct _GstPlay
{
GstPipeline pipeline;
char *location;
GHashTable *elements;
GST_OBJECT_PADDING
};
struct _GstPlayClass
{
GstPipelineClass parent_class;
void (*time_tick) (GstPlay *play, gint64 time_nanos);
void (*stream_length) (GstPlay *play, gint64 length_nanos);
void (*have_video_size) (GstPlay *play, gint width, gint height);
GST_CLASS_PADDING
};
GType gst_play_get_type (void);
gboolean gst_play_set_video_sink (GstPlay *play,
GstElement *video_sink);
gboolean gst_play_set_audio_sink (GstPlay *play,
GstElement *audio_sink);
gboolean gst_play_set_visualization (GstPlay *play,
GstElement *element);
gboolean gst_play_connect_visualization (GstPlay *play,
gboolean connect);
gboolean gst_play_set_location (GstPlay *play,
const char *location);
char * gst_play_get_location (GstPlay *play);
gboolean gst_play_seek_to_time (GstPlay *play,
gint64 time_nanos);
#endif /* __GST_PLAY_H__ */