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gstreamer/gst/playback/gstplaysink.c
Wim Taymans 691a52975e playbin2: fix resume after pause 
Don't ignore the state change of the children, they might be doing an ASYNC
state change.
2009-05-08 13:11:01 +02:00

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/* GStreamer
* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.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., 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 <gst/gst-i18n-plugin.h>
#include <gst/pbutils/pbutils.h>
#include "gstplaysink.h"
GST_DEBUG_CATEGORY_STATIC (gst_play_sink_debug);
#define GST_CAT_DEFAULT gst_play_sink_debug
#define VOLUME_MAX_DOUBLE 10.0
#define GST_PLAY_CHAIN(c) ((GstPlayChain *)(c))
/* holds the common data fields for the audio and video pipelines. We keep them
* in a structure to more easily have all the info available. */
typedef struct
{
GstPlaySink *playsink;
GstElement *bin;
gboolean added;
gboolean activated;
gboolean raw;
} GstPlayChain;
typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *queue;
GstElement *conv;
GstElement *resample;
GstElement *volume; /* element with the volume property */
GstElement *mute; /* element with the mute property */
GstElement *sink;
} GstPlayAudioChain;
typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *queue;
GstElement *conv;
GstElement *scale;
GstElement *sink;
gboolean async;
} GstPlayVideoChain;
typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *queue;
GstElement *conv;
GstElement *resample;
GstPad *blockpad; /* srcpad of resample, used for switching the vis */
GstPad *vissinkpad; /* visualisation sinkpad, */
GstElement *vis;
GstPad *vissrcpad; /* visualisation srcpad, */
GstPad *srcpad; /* outgoing srcpad, used to connect to the next
* chain */
} GstPlayVisChain;
typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *conv;
GstElement *overlay;
GstPad *videosinkpad;
GstPad *textsinkpad;
GstPad *srcpad; /* outgoing srcpad, used to connect to the next
* chain */
GstElement *sink; /* custom sink to receive subtitle buffers */
} GstPlayTextChain;
typedef struct
{
GstPlayChain chain;
GstPad *sinkpad;
GstElement *queue;
GstElement *conv;
GstElement *overlay;
GstPad *videosinkpad;
GstPad *subpsinkpad;
GstPad *srcpad; /* outgoing srcpad, used to connect to the next
* chain */
GstElement *sink; /* custom sink to receive subpicture buffers */
} GstPlaySubpChain;
#define GST_PLAY_SINK_GET_LOCK(playsink) (((GstPlaySink *)playsink)->lock)
#define GST_PLAY_SINK_LOCK(playsink) g_mutex_lock (GST_PLAY_SINK_GET_LOCK (playsink))
#define GST_PLAY_SINK_UNLOCK(playsink) g_mutex_unlock (GST_PLAY_SINK_GET_LOCK (playsink))
struct _GstPlaySink
{
GstBin bin;
GMutex *lock;
gboolean async_pending;
GstPlayFlags flags;
/* chains */
GstPlayAudioChain *audiochain;
GstPlayVideoChain *videochain;
GstPlayVisChain *vischain;
GstPlayTextChain *textchain;
GstPlaySubpChain *subpchain;
/* audio */
GstPad *audio_pad;
gboolean audio_pad_raw;
/* audio tee */
GstElement *audio_tee;
GstPad *audio_tee_sink;
GstPad *audio_tee_asrc;
GstPad *audio_tee_vissrc;
/* video */
GstPad *video_pad;
gboolean video_pad_raw;
/* text */
GstPad *text_pad;
/* subpictures */
GstPad *subp_pad;
/* properties */
GstElement *audio_sink;
GstElement *video_sink;
GstElement *visualisation;
GstElement *text_sink;
GstElement *subp_sink;
gfloat volume;
gboolean mute;
gchar *font_desc; /* font description */
guint connection_speed; /* connection speed in bits/sec (0 = unknown) */
gint count;
};
struct _GstPlaySinkClass
{
GstBinClass parent_class;
};
/* props */
enum
{
PROP_0,
PROP_AUDIO_SINK,
PROP_VIDEO_SINK,
PROP_VIS_PLUGIN,
PROP_VOLUME,
PROP_FRAME,
PROP_FONT_DESC,
PROP_LAST
};
/* signals */
enum
{
LAST_SIGNAL
};
static void gst_play_sink_class_init (GstPlaySinkClass * klass);
static void gst_play_sink_init (GstPlaySink * playsink);
static void gst_play_sink_dispose (GObject * object);
static void gst_play_sink_finalize (GObject * object);
static gboolean gst_play_sink_send_event (GstElement * element,
GstEvent * event);
static GstStateChangeReturn gst_play_sink_change_state (GstElement * element,
GstStateChange transition);
/* static guint gst_play_sink_signals[LAST_SIGNAL] = { 0 }; */
static const GstElementDetails gst_play_sink_details =
GST_ELEMENT_DETAILS ("Player Sink",
"Generic/Bin/Player",
"Autoplug and play media from an uri",
"Wim Taymans <wim.taymans@gmail.com>");
G_DEFINE_TYPE (GstPlaySink, gst_play_sink, GST_TYPE_BIN);
static void
gst_play_sink_class_init (GstPlaySinkClass * klass)
{
GObjectClass *gobject_klass;
GstElementClass *gstelement_klass;
GstBinClass *gstbin_klass;
gobject_klass = (GObjectClass *) klass;
gstelement_klass = (GstElementClass *) klass;
gstbin_klass = (GstBinClass *) klass;
gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_sink_dispose);
gobject_klass->finalize = GST_DEBUG_FUNCPTR (gst_play_sink_finalize);
gst_element_class_set_details (gstelement_klass, &gst_play_sink_details);
gstelement_klass->change_state =
GST_DEBUG_FUNCPTR (gst_play_sink_change_state);
gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_sink_send_event);
GST_DEBUG_CATEGORY_INIT (gst_play_sink_debug, "playsink", 0, "play bin");
}
static void
gst_play_sink_init (GstPlaySink * playsink)
{
/* init groups */
playsink->video_sink = NULL;
playsink->audio_sink = NULL;
playsink->visualisation = NULL;
playsink->text_sink = NULL;
playsink->volume = 1.0;
playsink->font_desc = NULL;
playsink->flags = GST_PLAY_FLAG_SOFT_VOLUME;
playsink->lock = g_mutex_new ();
}
static void
free_chain (GstPlayChain * chain)
{
if (chain) {
if (chain->bin)
gst_object_unref (chain->bin);
g_free (chain);
}
}
static void
gst_play_sink_dispose (GObject * object)
{
GstPlaySink *playsink;
playsink = GST_PLAY_SINK (object);
if (playsink->audio_sink != NULL) {
gst_element_set_state (playsink->audio_sink, GST_STATE_NULL);
gst_object_unref (playsink->audio_sink);
playsink->audio_sink = NULL;
}
if (playsink->video_sink != NULL) {
gst_element_set_state (playsink->video_sink, GST_STATE_NULL);
gst_object_unref (playsink->video_sink);
playsink->video_sink = NULL;
}
if (playsink->visualisation != NULL) {
gst_element_set_state (playsink->visualisation, GST_STATE_NULL);
gst_object_unref (playsink->visualisation);
playsink->visualisation = NULL;
}
if (playsink->text_sink != NULL) {
gst_element_set_state (playsink->text_sink, GST_STATE_NULL);
gst_object_unref (playsink->text_sink);
playsink->text_sink = NULL;
}
free_chain ((GstPlayChain *) playsink->videochain);
playsink->videochain = NULL;
free_chain ((GstPlayChain *) playsink->audiochain);
playsink->audiochain = NULL;
free_chain ((GstPlayChain *) playsink->vischain);
playsink->vischain = NULL;
free_chain ((GstPlayChain *) playsink->textchain);
playsink->textchain = NULL;
if (playsink->audio_tee_sink) {
gst_object_unref (playsink->audio_tee_sink);
playsink->audio_tee_sink = NULL;
}
if (playsink->audio_tee_vissrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_vissrc);
gst_object_unref (playsink->audio_tee_vissrc);
playsink->audio_tee_vissrc = NULL;
}
if (playsink->audio_tee_asrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_asrc);
gst_object_unref (playsink->audio_tee_asrc);
playsink->audio_tee_asrc = NULL;
}
g_free (playsink->font_desc);
playsink->font_desc = NULL;
G_OBJECT_CLASS (gst_play_sink_parent_class)->dispose (object);
}
static void
gst_play_sink_finalize (GObject * object)
{
GstPlaySink *playsink;
playsink = GST_PLAY_SINK (object);
g_mutex_free (playsink->lock);
G_OBJECT_CLASS (gst_play_sink_parent_class)->finalize (object);
}
void
gst_play_sink_set_video_sink (GstPlaySink * playsink, GstElement * sink)
{
GST_PLAY_SINK_LOCK (playsink);
if (playsink->video_sink)
gst_object_unref (playsink->video_sink);
if (sink) {
gst_object_ref (sink);
gst_object_sink (sink);
}
playsink->video_sink = sink;
GST_PLAY_SINK_UNLOCK (playsink);
}
GstElement *
gst_play_sink_get_video_sink (GstPlaySink * playsink)
{
GstElement *result = NULL;
GstPlayVideoChain *chain;
GST_PLAY_SINK_LOCK (playsink);
if ((chain = (GstPlayVideoChain *) playsink->videochain)) {
/* we have an active chain, get the sink */
if (chain->sink)
result = gst_object_ref (chain->sink);
}
/* nothing found, return last configured sink */
if (result == NULL && playsink->video_sink)
result = gst_object_ref (playsink->video_sink);
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
void
gst_play_sink_set_audio_sink (GstPlaySink * playsink, GstElement * sink)
{
GST_PLAY_SINK_LOCK (playsink);
if (playsink->audio_sink)
gst_object_unref (playsink->audio_sink);
if (sink) {
gst_object_ref (sink);
gst_object_sink (sink);
}
playsink->audio_sink = sink;
GST_PLAY_SINK_UNLOCK (playsink);
}
GstElement *
gst_play_sink_get_audio_sink (GstPlaySink * playsink)
{
GstElement *result = NULL;
GstPlayAudioChain *chain;
GST_PLAY_SINK_LOCK (playsink);
if ((chain = (GstPlayAudioChain *) playsink->audiochain)) {
/* we have an active chain, get the sink */
if (chain->sink)
result = gst_object_ref (chain->sink);
}
/* nothing found, return last configured sink */
if (result == NULL && playsink->audio_sink)
result = gst_object_ref (playsink->audio_sink);
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
static void
gst_play_sink_vis_unblocked (GstPad * tee_pad, gboolean blocked,
gpointer user_data)
{
GstPlaySink *playsink;
playsink = GST_PLAY_SINK (user_data);
/* nothing to do here, we need a dummy callback here to make the async call
* non-blocking. */
GST_DEBUG_OBJECT (playsink, "vis pad unblocked");
}
static void
gst_play_sink_vis_blocked (GstPad * tee_pad, gboolean blocked,
gpointer user_data)
{
GstPlaySink *playsink;
GstPlayVisChain *chain;
playsink = GST_PLAY_SINK (user_data);
GST_PLAY_SINK_LOCK (playsink);
GST_DEBUG_OBJECT (playsink, "vis pad blocked");
/* now try to change the plugin in the running vis chain */
if (!(chain = (GstPlayVisChain *) playsink->vischain))
goto done;
/* unlink the old plugin and unghost the pad */
gst_pad_unlink (chain->blockpad, chain->vissinkpad);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->srcpad), NULL);
/* set the old plugin to NULL and remove */
gst_element_set_state (chain->vis, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (chain->chain.bin), chain->vis);
/* add new plugin and set state to playing */
chain->vis = playsink->visualisation;
gst_bin_add (GST_BIN_CAST (chain->chain.bin), chain->vis);
gst_element_set_state (chain->vis, GST_STATE_PLAYING);
/* get pads */
chain->vissinkpad = gst_element_get_static_pad (chain->vis, "sink");
chain->vissrcpad = gst_element_get_static_pad (chain->vis, "src");
/* link pads */
gst_pad_link (chain->blockpad, chain->vissinkpad);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->srcpad),
chain->vissrcpad);
done:
/* Unblock the pad */
gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_sink_vis_unblocked,
playsink);
GST_PLAY_SINK_UNLOCK (playsink);
}
void
gst_play_sink_set_vis_plugin (GstPlaySink * playsink, GstElement * vis)
{
GstPlayVisChain *chain;
/* setting NULL means creating the default vis plugin */
if (vis == NULL)
vis = gst_element_factory_make ("goom", "vis");
/* simply return if we don't have a vis plugin here */
if (vis == NULL)
return;
GST_PLAY_SINK_LOCK (playsink);
/* first store the new vis */
if (playsink->visualisation)
gst_object_unref (playsink->visualisation);
/* take ownership */
gst_object_ref (vis);
gst_object_sink (vis);
playsink->visualisation = vis;
/* now try to change the plugin in the running vis chain, if we have no chain,
* we don't bother, any future vis chain will be created with the new vis
* plugin. */
if (!(chain = (GstPlayVisChain *) playsink->vischain))
goto done;
/* block the pad, the next time the callback is called we can change the
* visualisation. It's possible that this never happens or that the pad was
* already blocked. If the callback never happens, we don't have new data so
* we don't need the new vis plugin. If the pad was already blocked, the
* function returns FALSE but the previous pad block will do the right thing
* anyway. */
GST_DEBUG_OBJECT (playsink, "blocking vis pad");
gst_pad_set_blocked_async (chain->blockpad, TRUE, gst_play_sink_vis_blocked,
playsink);
done:
GST_PLAY_SINK_UNLOCK (playsink);
return;
}
GstElement *
gst_play_sink_get_vis_plugin (GstPlaySink * playsink)
{
GstElement *result = NULL;
GstPlayVisChain *chain;
GST_PLAY_SINK_LOCK (playsink);
if ((chain = (GstPlayVisChain *) playsink->vischain)) {
/* we have an active chain, get the sink */
if (chain->vis)
result = gst_object_ref (chain->vis);
}
/* nothing found, return last configured sink */
if (result == NULL && playsink->visualisation)
result = gst_object_ref (playsink->visualisation);
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
void
gst_play_sink_set_text_sink (GstPlaySink * playsink, GstElement * sink)
{
GST_PLAY_SINK_LOCK (playsink);
if (playsink->text_sink)
gst_object_unref (playsink->text_sink);
if (sink) {
gst_object_ref (sink);
gst_object_sink (sink);
}
playsink->text_sink = sink;
GST_PLAY_SINK_UNLOCK (playsink);
}
GstElement *
gst_play_sink_get_text_sink (GstPlaySink * playsink)
{
GstElement *result = NULL;
GstPlayTextChain *chain;
GST_PLAY_SINK_LOCK (playsink);
if ((chain = (GstPlayTextChain *) playsink->textchain)) {
/* we have an active chain, get the sink */
if (chain->sink)
result = gst_object_ref (chain->sink);
}
/* nothing found, return last configured sink */
if (result == NULL && playsink->text_sink)
result = gst_object_ref (playsink->text_sink);
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
void
gst_play_sink_set_subp_sink (GstPlaySink * playsink, GstElement * sink)
{
GST_PLAY_SINK_LOCK (playsink);
if (playsink->subp_sink)
gst_object_unref (playsink->subp_sink);
if (sink) {
gst_object_ref (sink);
gst_object_sink (sink);
}
playsink->subp_sink = sink;
GST_PLAY_SINK_UNLOCK (playsink);
}
GstElement *
gst_play_sink_get_subp_sink (GstPlaySink * playsink)
{
GstElement *result = NULL;
GstPlaySubpChain *chain;
GST_PLAY_SINK_LOCK (playsink);
if ((chain = (GstPlaySubpChain *) playsink->subpchain)) {
/* we have an active chain, get the sink */
if (chain->sink)
result = gst_object_ref (chain->sink);
}
/* nothing found, return last configured sink */
if (result == NULL && playsink->subp_sink)
result = gst_object_ref (playsink->subp_sink);
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
void
gst_play_sink_set_volume (GstPlaySink * playsink, gdouble volume)
{
GstPlayAudioChain *chain;
GST_PLAY_SINK_LOCK (playsink);
playsink->volume = volume;
chain = (GstPlayAudioChain *) playsink->audiochain;
if (chain && chain->volume) {
/* if there is a mute element or we are not muted, set the volume */
if (chain->mute || !playsink->mute)
g_object_set (chain->volume, "volume", volume, NULL);
}
GST_PLAY_SINK_UNLOCK (playsink);
}
gdouble
gst_play_sink_get_volume (GstPlaySink * playsink)
{
gdouble result;
GstPlayAudioChain *chain;
GST_PLAY_SINK_LOCK (playsink);
chain = (GstPlayAudioChain *) playsink->audiochain;
result = playsink->volume;
if (chain && chain->volume) {
if (chain->mute || !playsink->mute) {
g_object_get (chain->volume, "volume", &result, NULL);
playsink->volume = result;
}
}
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
void
gst_play_sink_set_mute (GstPlaySink * playsink, gboolean mute)
{
GstPlayAudioChain *chain;
GST_PLAY_SINK_LOCK (playsink);
playsink->mute = mute;
chain = (GstPlayAudioChain *) playsink->audiochain;
if (chain) {
if (chain->mute) {
g_object_set (chain->mute, "mute", mute, NULL);
} else if (chain->volume) {
if (mute)
g_object_set (chain->volume, "volume", (gdouble) 0.0, NULL);
else
g_object_set (chain->volume, "volume", (gdouble) playsink->volume,
NULL);
}
}
GST_PLAY_SINK_UNLOCK (playsink);
}
gboolean
gst_play_sink_get_mute (GstPlaySink * playsink)
{
gboolean result;
GstPlayAudioChain *chain;
GST_PLAY_SINK_LOCK (playsink);
chain = (GstPlayAudioChain *) playsink->audiochain;
if (chain && chain->mute) {
g_object_get (chain->mute, "mute", &result, NULL);
playsink->mute = result;
} else {
result = playsink->mute;
}
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
static void
post_missing_element_message (GstPlaySink * playsink, const gchar * name)
{
GstMessage *msg;
msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playsink), name);
gst_element_post_message (GST_ELEMENT_CAST (playsink), msg);
}
static gboolean
add_chain (GstPlayChain * chain, gboolean add)
{
if (chain->added == add)
return TRUE;
if (add)
gst_bin_add (GST_BIN_CAST (chain->playsink), chain->bin);
else
gst_bin_remove (GST_BIN_CAST (chain->playsink), chain->bin);
chain->added = add;
return TRUE;
}
static gboolean
activate_chain (GstPlayChain * chain, gboolean activate)
{
GstState state;
if (chain->activated == activate)
return TRUE;
GST_OBJECT_LOCK (chain->playsink);
state = GST_STATE_TARGET (chain->playsink);
GST_OBJECT_UNLOCK (chain->playsink);
if (activate)
gst_element_set_state (chain->bin, state);
else
gst_element_set_state (chain->bin, GST_STATE_NULL);
chain->activated = activate;
return TRUE;
}
static gint
find_property (GstElement * element, const gchar * name)
{
gint res;
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element), name)) {
res = 0;
GST_DEBUG_OBJECT (element, "found %s property", name);
} else {
GST_DEBUG_OBJECT (element, "did not find %s property", name);
res = 1;
gst_object_unref (element);
}
return res;
}
/* find an object in the hierarchy with a property named @name */
static GstElement *
gst_play_sink_find_property (GstPlaySink * playsink, GstElement * obj,
const gchar * name)
{
GstElement *result = NULL;
GstIterator *it;
if (GST_IS_BIN (obj)) {
it = gst_bin_iterate_recurse (GST_BIN_CAST (obj));
result = gst_iterator_find_custom (it,
(GCompareFunc) find_property, (gpointer) name);
gst_iterator_free (it);
} else {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (obj), name)) {
result = obj;
gst_object_ref (obj);
}
}
return result;
}
static gint
find_property_sink (GstElement * element, const gchar * name)
{
gint res;
gboolean is_sink;
GST_OBJECT_LOCK (element);
is_sink = GST_OBJECT_FLAG_IS_SET (element, GST_ELEMENT_IS_SINK);
GST_OBJECT_UNLOCK (element);
if (is_sink &&
g_object_class_find_property (G_OBJECT_GET_CLASS (element), name)) {
res = 0;
GST_DEBUG_OBJECT (element, "found %s property on sink", name);
} else {
GST_DEBUG_OBJECT (element, "did not find %s property", name);
res = 1;
gst_object_unref (element);
}
return res;
}
/* find a sink in the hierarchy with a property named @name. This function does
* not increase the refcount of the returned object and thus remains valid as
* long as the bin is valid. */
static GstElement *
gst_play_sink_find_property_sinks (GstPlaySink * playsink, GstElement * obj,
const gchar * name)
{
GstElement *result = NULL;
GstIterator *it;
if (g_object_class_find_property (G_OBJECT_GET_CLASS (obj), name)) {
result = obj;
} else if (GST_IS_BIN (obj)) {
it = gst_bin_iterate_recurse (GST_BIN_CAST (obj));
result = gst_iterator_find_custom (it,
(GCompareFunc) find_property_sink, (gpointer) name);
gst_iterator_free (it);
/* we don't need the extra ref */
if (result)
gst_object_unref (result);
}
return result;
}
static void
do_async_start (GstPlaySink * playsink)
{
GstMessage *message;
playsink->async_pending = TRUE;
message = gst_message_new_async_start (GST_OBJECT_CAST (playsink), FALSE);
GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (GST_BIN_CAST
(playsink), message);
}
static void
do_async_done (GstPlaySink * playsink)
{
GstMessage *message;
if (playsink->async_pending) {
message = gst_message_new_async_done (GST_OBJECT_CAST (playsink));
GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (GST_BIN_CAST
(playsink), message);
playsink->async_pending = FALSE;
}
}
/* try to change the state of an element. This function returns the element when
* the state change could be performed. When this function returns NULL an error
* occured and the element is unreffed if @unref is TRUE. */
static GstElement *
try_element (GstPlaySink * playsink, GstElement * element, gboolean unref)
{
GstStateChangeReturn ret;
if (element) {
ret = gst_element_set_state (element, GST_STATE_READY);
if (ret == GST_STATE_CHANGE_FAILURE) {
GST_DEBUG_OBJECT (playsink, "failed state change..");
gst_element_set_state (element, GST_STATE_NULL);
if (unref)
gst_object_unref (element);
element = NULL;
}
}
return element;
}
/* make the element (bin) that contains the elements needed to perform
* video display.
*
* +------------------------------------------------------------+
* | vbin |
* | +-------+ +----------+ +----------+ +---------+ |
* | | queue | |colorspace| |videoscale| |videosink| |
* | +-sink src-sink src-sink src-sink | |
* | | +-------+ +----------+ +----------+ +---------+ |
* sink-+ |
* +------------------------------------------------------------+
*
*/
static GstPlayVideoChain *
gen_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async,
gboolean queue)
{
GstPlayVideoChain *chain;
GstBin *bin;
GstPad *pad;
GstElement *head, *prev, *elem;
chain = g_new0 (GstPlayVideoChain, 1);
chain->chain.playsink = playsink;
chain->chain.raw = raw;
GST_DEBUG_OBJECT (playsink, "making video chain %p", chain);
if (playsink->video_sink) {
GST_DEBUG_OBJECT (playsink, "trying configured videosink");
chain->sink = try_element (playsink, playsink->video_sink, FALSE);
}
if (chain->sink == NULL) {
GST_DEBUG_OBJECT (playsink, "trying autovideosink");
elem = gst_element_factory_make ("autovideosink", "videosink");
chain->sink = try_element (playsink, elem, TRUE);
}
/* FIXME: if DEFAULT_VIDEOSINK != "autovideosink" try this now */
if (chain->sink == NULL) {
GST_DEBUG_OBJECT (playsink, "trying xvimagesink");
elem = gst_element_factory_make ("xvimagesink", "videosink");
chain->sink = try_element (playsink, elem, TRUE);
}
if (chain->sink == NULL)
goto no_sinks;
/* if we can disable async behaviour of the sink, we can avoid adding a
* queue for the audio chain. */
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async");
if (elem) {
GST_DEBUG_OBJECT (playsink, "setting async property to %d on element %s",
async, GST_ELEMENT_NAME (elem));
g_object_set (elem, "async", async, NULL);
chain->async = async;
} else {
GST_DEBUG_OBJECT (playsink, "no async property on the sink");
chain->async = TRUE;
}
/* create a bin to hold objects, as we create them we add them to this bin so
* that when something goes wrong we only need to unref the bin */
chain->chain.bin = gst_bin_new ("vbin");
bin = GST_BIN_CAST (chain->chain.bin);
gst_object_ref (bin);
gst_object_sink (bin);
gst_bin_add (bin, chain->sink);
if (queue) {
/* decouple decoder from sink, this improves playback quite a lot since the
* decoder can continue while the sink blocks for synchronisation. We don't
* need a lot of buffers as this consumes a lot of memory and we don't want
* too little because else we would be context switching too quickly. */
chain->queue = gst_element_factory_make ("queue", "vqueue");
g_object_set (G_OBJECT (chain->queue), "max-size-buffers", 3,
"max-size-bytes", 0, "max-size-time", (gint64) 0, NULL);
gst_bin_add (bin, chain->queue);
head = prev = chain->queue;
} else {
head = chain->sink;
prev = NULL;
}
if (raw && !(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) {
GST_DEBUG_OBJECT (playsink, "creating ffmpegcolorspace");
chain->conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
if (chain->conv == NULL) {
post_missing_element_message (playsink, "ffmpegcolorspace");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"ffmpegcolorspace"), ("video rendering might fail"));
} else {
gst_bin_add (bin, chain->conv);
if (prev) {
if (!gst_element_link_pads (prev, "src", chain->conv, "sink"))
goto link_failed;
} else {
head = chain->conv;
}
prev = chain->conv;
}
GST_DEBUG_OBJECT (playsink, "creating videoscale");
chain->scale = gst_element_factory_make ("videoscale", "vscale");
if (chain->scale == NULL) {
post_missing_element_message (playsink, "videoscale");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"videoscale"), ("possibly a liboil version mismatch?"));
} else {
gst_bin_add (bin, chain->scale);
if (prev) {
if (!gst_element_link_pads (prev, "src", chain->scale, "sink"))
goto link_failed;
} else {
head = chain->scale;
}
prev = chain->scale;
}
}
if (prev) {
GST_DEBUG_OBJECT (playsink, "linking to sink");
if (!gst_element_link_pads (prev, "src", chain->sink, NULL))
goto link_failed;
}
pad = gst_element_get_static_pad (head, "sink");
chain->sinkpad = gst_ghost_pad_new ("sink", pad);
gst_object_unref (pad);
gst_element_add_pad (chain->chain.bin, chain->sinkpad);
return chain;
/* ERRORS */
no_sinks:
{
if (!elem) {
post_missing_element_message (playsink, "autovideosink");
GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN,
(_("Both autovideosink and xvimagesink elements are missing.")),
(NULL));
} else {
GST_ELEMENT_ERROR (playsink, CORE, STATE_CHANGE,
(_("Both autovideosink and xvimagesink elements are not working.")),
(NULL));
}
free_chain ((GstPlayChain *) chain);
return NULL;
}
link_failed:
{
GST_ELEMENT_ERROR (playsink, CORE, PAD,
(NULL), ("Failed to configure the video sink."));
free_chain ((GstPlayChain *) chain);
return NULL;
}
}
static gboolean
setup_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async,
gboolean queue)
{
GstElement *elem;
GstPlayVideoChain *chain;
GstStateChangeReturn ret;
chain = playsink->videochain;
/* if the chain was active we don't do anything */
if (GST_PLAY_CHAIN (chain)->activated == TRUE)
return TRUE;
if (chain->chain.raw != raw)
return FALSE;
/* try to set the sink element to READY again */
ret = gst_element_set_state (chain->sink, GST_STATE_READY);
if (ret == GST_STATE_CHANGE_FAILURE)
return FALSE;
/* if we can disable async behaviour of the sink, we can avoid adding a
* queue for the audio chain. */
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async");
if (elem) {
GST_DEBUG_OBJECT (playsink, "setting async property to %d on element %s",
async, GST_ELEMENT_NAME (elem));
g_object_set (elem, "async", async, NULL);
chain->async = async;
} else {
GST_DEBUG_OBJECT (playsink, "no async property on the sink");
chain->async = TRUE;
}
return TRUE;
}
/* make an element for playback of video with subtitles embedded.
*
* +----------------------------------------------+
* | tbin +-------------+ |
* | +-----+ | textoverlay | |
* | | csp | +--video_sink | |
* sink-------sink src+ +-text_sink src--+ |
* | +-----+ | +-------------+ +-- src
* text_sink-------------+ |
* +----------------------------------------------+
*/
static GstPlayTextChain *
gen_text_chain (GstPlaySink * playsink)
{
GstPlayTextChain *chain;
GstBin *bin;
GstElement *elem;
GstPad *videosinkpad, *textsinkpad, *srcpad;
chain = g_new0 (GstPlayTextChain, 1);
chain->chain.playsink = playsink;
GST_DEBUG_OBJECT (playsink, "making text chain %p", chain);
chain->chain.bin = gst_bin_new ("tbin");
bin = GST_BIN_CAST (chain->chain.bin);
gst_object_ref (bin);
gst_object_sink (bin);
videosinkpad = textsinkpad = srcpad = NULL;
/* first try to hook the text pad to the custom sink */
if (playsink->text_sink) {
GST_DEBUG_OBJECT (playsink, "trying configured textsink");
chain->sink = try_element (playsink, playsink->text_sink, FALSE);
if (chain->sink) {
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async");
if (elem) {
/* make sure the sparse subtitles don't participate in the preroll */
g_object_set (elem, "async", FALSE, NULL);
/* we have a custom sink, this will be our textsinkpad */
textsinkpad = gst_element_get_static_pad (chain->sink, "sink");
if (textsinkpad) {
/* we're all fine now and we can add the sink to the chain */
GST_DEBUG_OBJECT (playsink, "adding custom text sink");
gst_bin_add (bin, chain->sink);
} else {
GST_WARNING_OBJECT (playsink,
"can't find a sink pad on custom text sink");
gst_object_unref (chain->sink);
chain->sink = NULL;
}
/* try to set sync to true but it's no biggie when we can't */
if ((elem =
gst_play_sink_find_property_sinks (playsink, chain->sink,
"sync")))
g_object_set (elem, "sync", TRUE, NULL);
} else {
GST_WARNING_OBJECT (playsink,
"can't find async property in custom text sink");
}
}
if (textsinkpad == NULL) {
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Custom text sink element is not usable.")),
("fallback to default textoverlay"));
}
}
if (textsinkpad == NULL) {
if (!(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) {
/* no custom sink, try to setup the colorspace and textoverlay elements */
chain->conv = gst_element_factory_make ("ffmpegcolorspace", "tconv");
if (chain->conv == NULL) {
/* not really needed, it might work without colorspace */
post_missing_element_message (playsink, "ffmpegcolorspace");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"ffmpegcolorspace"), ("subtitle rendering might fail"));
} else {
gst_bin_add (bin, chain->conv);
videosinkpad = gst_element_get_static_pad (chain->conv, "sink");
}
}
chain->overlay = gst_element_factory_make ("textoverlay", "overlay");
if (chain->overlay == NULL) {
post_missing_element_message (playsink, "textoverlay");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"textoverlay"), ("subtitle rendering disabled"));
} else {
gst_bin_add (bin, chain->overlay);
/* Set some parameters */
g_object_set (G_OBJECT (chain->overlay),
"halign", "center", "valign", "bottom", NULL);
if (playsink->font_desc) {
g_object_set (G_OBJECT (chain->overlay), "font-desc",
playsink->font_desc, NULL);
}
g_object_set (G_OBJECT (chain->overlay), "wait-text", FALSE, NULL);
textsinkpad = gst_element_get_static_pad (chain->overlay, "text_sink");
srcpad = gst_element_get_static_pad (chain->overlay, "src");
if (videosinkpad) {
/* if we had a videosinkpad, we had a converter and we can link it, we
* know that this will work */
gst_element_link_pads (chain->conv, "src", chain->overlay,
"video_sink");
} else {
/* no videopad, expose our own video pad then */
videosinkpad =
gst_element_get_static_pad (chain->overlay, "video_sink");
}
}
}
if (videosinkpad == NULL) {
/* if we still don't have a videosink, we don't have a converter nor an
* overlay. the only thing we can do is insert an identity and ghost the src
* and sink pads. */
chain->conv = gst_element_factory_make ("identity", "tidentity");
gst_bin_add (bin, chain->conv);
srcpad = gst_element_get_static_pad (chain->conv, "src");
videosinkpad = gst_element_get_static_pad (chain->conv, "sink");
} else {
/* we have a videosink but maybe not a srcpad because there was no
* overlay */
if (srcpad == NULL) {
/* ghost the source pad of the converter then */
srcpad = gst_element_get_static_pad (chain->conv, "src");
}
}
/* expose the ghostpads */
if (videosinkpad) {
chain->videosinkpad = gst_ghost_pad_new ("sink", videosinkpad);
gst_object_unref (videosinkpad);
gst_element_add_pad (chain->chain.bin, chain->videosinkpad);
}
if (textsinkpad) {
chain->textsinkpad = gst_ghost_pad_new ("text_sink", textsinkpad);
gst_object_unref (textsinkpad);
gst_element_add_pad (chain->chain.bin, chain->textsinkpad);
}
if (srcpad) {
chain->srcpad = gst_ghost_pad_new ("src", srcpad);
gst_object_unref (srcpad);
gst_element_add_pad (chain->chain.bin, chain->srcpad);
}
return chain;
}
/* make an element for playback of video with subpictures embedded.
*
* +--------------------------------------------------------+
* | pbin +-------------+ |
* | +-------+ +-----+ | dvdspu | |
* | | queue | | csp | +---video | |
* sink----sink src--sink src+ +-subpicture src--+ |
* | +-------+ +-----+ | +-------------+ +-- src
* subpicture----------------------+ |
* +--------------------------------------------------------+
*/
static GstPlaySubpChain *
gen_subp_chain (GstPlaySink * playsink)
{
GstPlaySubpChain *chain;
GstBin *bin;
GstElement *elem, *head;
GstPad *videosinkpad, *subpsinkpad, *srcpad;
chain = g_new0 (GstPlaySubpChain, 1);
chain->chain.playsink = playsink;
GST_DEBUG_OBJECT (playsink, "making subpicture chain %p", chain);
chain->chain.bin = gst_bin_new ("pbin");
bin = GST_BIN_CAST (chain->chain.bin);
gst_object_ref (bin);
gst_object_sink (bin);
videosinkpad = subpsinkpad = srcpad = NULL;
/* first try to hook the text pad to the custom sink */
if (playsink->subp_sink) {
GST_DEBUG_OBJECT (playsink, "trying configured subpsink");
chain->sink = try_element (playsink, playsink->text_sink, FALSE);
if (chain->sink) {
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async");
if (elem) {
/* make sure the sparse subtitles don't participate in the preroll */
g_object_set (elem, "async", FALSE, NULL);
/* we have a custom sink, this will be our subpsinkpad */
subpsinkpad = gst_element_get_static_pad (chain->sink, "sink");
if (subpsinkpad) {
/* we're all fine now and we can add the sink to the chain */
GST_DEBUG_OBJECT (playsink, "adding custom text sink");
gst_bin_add (bin, chain->sink);
} else {
GST_WARNING_OBJECT (playsink,
"can't find a sink pad on custom text sink");
gst_object_unref (chain->sink);
chain->sink = NULL;
}
/* try to set sync to true but it's no biggie when we can't */
if ((elem =
gst_play_sink_find_property_sinks (playsink, chain->sink,
"sync")))
g_object_set (elem, "sync", TRUE, NULL);
} else {
GST_WARNING_OBJECT (playsink,
"can't find async property in custom text sink");
}
}
if (subpsinkpad == NULL) {
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Custom text sink element is not usable.")),
("fallback to default dvdspu overlay"));
}
}
/* make a little queue */
chain->queue = gst_element_factory_make ("queue", "vqueue");
g_object_set (G_OBJECT (chain->queue), "max-size-buffers", 3,
"max-size-bytes", 0, "max-size-time", (gint64) 0, NULL);
gst_bin_add (bin, chain->queue);
head = chain->queue;
/* video goes into the queue */
videosinkpad = gst_element_get_static_pad (chain->queue, "sink");
if (subpsinkpad == NULL) {
if (!(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) {
/* no custom sink, try to setup the colorspace and textoverlay elements */
chain->conv = gst_element_factory_make ("ffmpegcolorspace", "tconv");
if (chain->conv == NULL) {
/* not really needed, it might work without colorspace */
post_missing_element_message (playsink, "ffmpegcolorspace");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"ffmpegcolorspace"), ("subpicture rendering might fail"));
} else {
gst_bin_add (bin, chain->conv);
gst_element_link_pads (head, "src", chain->conv, "sink");
head = chain->conv;
}
}
chain->overlay = gst_element_factory_make ("dvdspu", "spuoverlay");
if (chain->overlay == NULL) {
post_missing_element_message (playsink, "dvdspu");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"dvdspu"), ("subpicture rendering disabled"));
} else {
gst_bin_add (bin, chain->overlay);
/* Set some parameters */
subpsinkpad = gst_element_get_static_pad (chain->overlay, "subpicture");
/* link to the next element */
gst_element_link_pads (head, "src", chain->overlay, "video");
head = chain->overlay;
}
}
srcpad = gst_element_get_static_pad (head, "src");
chain->srcpad = gst_ghost_pad_new ("src", srcpad);
gst_object_unref (srcpad);
gst_element_add_pad (chain->chain.bin, chain->srcpad);
/* expose the ghostpads */
chain->videosinkpad = gst_ghost_pad_new ("sink", videosinkpad);
gst_object_unref (videosinkpad);
gst_element_add_pad (chain->chain.bin, chain->videosinkpad);
if (subpsinkpad) {
chain->subpsinkpad = gst_ghost_pad_new ("subpicture", subpsinkpad);
gst_object_unref (subpsinkpad);
gst_element_add_pad (chain->chain.bin, chain->subpsinkpad);
}
return chain;
}
/* make the chain that contains the elements needed to perform
* audio playback.
*
* We add a tee as the first element so that we can link the visualisation chain
* to it when requested.
*
* +-------------------------------------------------------------+
* | abin |
* | +---------+ +----------+ +---------+ +---------+ |
* | |audioconv| |audioscale| | volume | |audiosink| |
* | +-srck src-sink src-sink src-sink | |
* | | +---------+ +----------+ +---------+ +---------+ |
* sink-+ |
* +-------------------------------------------------------------+
*/
static GstPlayAudioChain *
gen_audio_chain (GstPlaySink * playsink, gboolean raw, gboolean queue)
{
GstPlayAudioChain *chain;
GstBin *bin;
gboolean have_volume;
GstPad *pad;
GstElement *head, *prev, *elem;
chain = g_new0 (GstPlayAudioChain, 1);
chain->chain.playsink = playsink;
chain->chain.raw = raw;
GST_DEBUG_OBJECT (playsink, "making audio chain %p", chain);
if (playsink->audio_sink) {
GST_DEBUG_OBJECT (playsink, "trying configured audiosink");
chain->sink = try_element (playsink, playsink->audio_sink, FALSE);
}
if (chain->sink == NULL) {
GST_DEBUG_OBJECT (playsink, "trying autoaudiosink");
elem = gst_element_factory_make ("autoaudiosink", "audiosink");
chain->sink = try_element (playsink, elem, TRUE);
}
/* FIXME: if DEFAULT_AUDIOSINK != "autoaudiosink" try this now */
if (chain->sink == NULL) {
GST_DEBUG_OBJECT (playsink, "trying alsasink");
elem = gst_element_factory_make ("alsasink", "audiosink");
chain->sink = try_element (playsink, elem, TRUE);
}
if (chain->sink == NULL)
goto no_sinks;
chain->chain.bin = gst_bin_new ("abin");
bin = GST_BIN_CAST (chain->chain.bin);
gst_object_ref (bin);
gst_object_sink (bin);
gst_bin_add (bin, chain->sink);
if (queue) {
/* we have to add a queue when we need to decouple for the video sink in
* visualisations */
GST_DEBUG_OBJECT (playsink, "adding audio queue");
chain->queue = gst_element_factory_make ("queue", "aqueue");
gst_bin_add (bin, chain->queue);
prev = head = chain->queue;
} else {
head = chain->sink;
prev = NULL;
}
/* check if the sink, or something within the sink, has the volume property.
* If it does we don't need to add a volume element. */
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "volume");
if (elem) {
chain->volume = elem;
GST_DEBUG_OBJECT (playsink, "the sink has a volume property");
have_volume = TRUE;
/* use the sink to control the volume */
g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume, NULL);
/* if the sink also has a mute property we can use this as well. We'll only
* use the mute property if there is a volume property. We can simulate the
* mute with the volume otherwise. */
chain->mute =
gst_play_sink_find_property_sinks (playsink, chain->sink, "mute");
if (chain->mute) {
GST_DEBUG_OBJECT (playsink, "the sink has a mute property");
}
} else {
/* no volume, we need to add a volume element when we can */
GST_DEBUG_OBJECT (playsink, "the sink has no volume property");
have_volume = FALSE;
}
if (raw && !(playsink->flags & GST_PLAY_FLAG_NATIVE_AUDIO)) {
GST_DEBUG_OBJECT (playsink, "creating audioconvert");
chain->conv = gst_element_factory_make ("audioconvert", "aconv");
if (chain->conv == NULL) {
post_missing_element_message (playsink, "audioconvert");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"audioconvert"), ("possibly a liboil version mismatch?"));
} else {
gst_bin_add (bin, chain->conv);
if (prev) {
if (!gst_element_link_pads (prev, "src", chain->conv, "sink"))
goto link_failed;
} else {
head = chain->conv;
}
prev = chain->conv;
}
GST_DEBUG_OBJECT (playsink, "creating audioresample");
chain->resample = gst_element_factory_make ("audioresample", "aresample");
if (chain->resample == NULL) {
post_missing_element_message (playsink, "audioresample");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"audioresample"), ("possibly a liboil version mismatch?"));
} else {
gst_bin_add (bin, chain->resample);
if (prev) {
if (!gst_element_link_pads (prev, "src", chain->resample, "sink"))
goto link_failed;
} else {
head = chain->resample;
}
prev = chain->resample;
}
if (!have_volume && playsink->flags & GST_PLAY_FLAG_SOFT_VOLUME) {
GST_DEBUG_OBJECT (playsink, "creating volume");
chain->volume = gst_element_factory_make ("volume", "volume");
if (chain->volume == NULL) {
post_missing_element_message (playsink, "volume");
GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"volume"), ("possibly a liboil version mismatch?"));
} else {
have_volume = TRUE;
/* volume also has the mute property */
chain->mute = chain->volume;
/* configure with the latest volume and mute */
g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume,
NULL);
g_object_set (G_OBJECT (chain->mute), "mute", playsink->mute, NULL);
gst_bin_add (bin, chain->volume);
if (prev) {
if (!gst_element_link_pads (prev, "src", chain->volume, "sink"))
goto link_failed;
} else {
head = chain->volume;
}
prev = chain->volume;
}
}
}
if (prev) {
/* we only have to link to the previous element if we have something in
* front of the sink */
GST_DEBUG_OBJECT (playsink, "linking to sink");
if (!gst_element_link_pads (prev, "src", chain->sink, NULL))
goto link_failed;
}
/* post a warning if we have no way to configure the volume */
if (!have_volume) {
GST_ELEMENT_WARNING (playsink, STREAM, NOT_IMPLEMENTED,
(_("No volume control found")), ("Volume/mute is not available"));
}
/* and ghost the sinkpad of the headmost element */
GST_DEBUG_OBJECT (playsink, "ghosting sink pad");
pad = gst_element_get_static_pad (head, "sink");
chain->sinkpad = gst_ghost_pad_new ("sink", pad);
gst_object_unref (pad);
gst_element_add_pad (chain->chain.bin, chain->sinkpad);
return chain;
/* ERRORS */
no_sinks:
{
if (!elem) {
post_missing_element_message (playsink, "autoaudiosink");
GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN,
(_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
} else {
GST_ELEMENT_ERROR (playsink, CORE, STATE_CHANGE,
(_("Both autoaudiosink and alsasink elements are not working.")),
(NULL));
}
free_chain ((GstPlayChain *) chain);
return NULL;
}
link_failed:
{
GST_ELEMENT_ERROR (playsink, CORE, PAD,
(NULL), ("Failed to configure the audio sink."));
free_chain ((GstPlayChain *) chain);
return NULL;
}
}
static gboolean
setup_audio_chain (GstPlaySink * playsink, gboolean raw, gboolean queue)
{
GstElement *elem;
GstPlayAudioChain *chain;
GstStateChangeReturn ret;
chain = playsink->audiochain;
/* if the chain was active we don't do anything */
if (GST_PLAY_CHAIN (chain)->activated == TRUE)
return TRUE;
if (chain->chain.raw != raw)
return FALSE;
/* try to set the sink element to READY again */
ret = gst_element_set_state (chain->sink, GST_STATE_READY);
if (ret == GST_STATE_CHANGE_FAILURE)
return FALSE;
/* check if the sink, or something within the sink, has the volume property.
* If it does we don't need to add a volume element. */
elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "volume");
if (elem) {
chain->volume = elem;
GST_DEBUG_OBJECT (playsink, "the sink has a volume property");
/* use the sink to control the volume */
g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume, NULL);
/* if the sink also has a mute property we can use this as well. We'll only
* use the mute property if there is a volume property. We can simulate the
* mute with the volume otherwise. */
chain->mute =
gst_play_sink_find_property_sinks (playsink, chain->sink, "mute");
if (chain->mute) {
GST_DEBUG_OBJECT (playsink, "the sink has a mute property");
}
} else {
/* no volume, we need to add a volume element when we can */
GST_DEBUG_OBJECT (playsink, "the sink has no volume property");
chain->volume = NULL;
chain->mute = NULL;
}
return TRUE;
}
/*
* +-------------------------------------------------------------------+
* | visbin |
* | +----------+ +------------+ +----------+ +-------+ |
* | | visqueue | | audioconv | | audiores | | vis | |
* | +-sink src-sink + samp src-sink src-sink src-+ |
* | | +----------+ +------------+ +----------+ +-------+ | |
* sink-+ +-src
* +-------------------------------------------------------------------+
*
*/
static GstPlayVisChain *
gen_vis_chain (GstPlaySink * playsink)
{
GstPlayVisChain *chain;
GstBin *bin;
gboolean res;
GstPad *pad;
GstElement *elem;
chain = g_new0 (GstPlayVisChain, 1);
chain->chain.playsink = playsink;
GST_DEBUG_OBJECT (playsink, "making vis chain %p", chain);
chain->chain.bin = gst_bin_new ("visbin");
bin = GST_BIN_CAST (chain->chain.bin);
gst_object_ref (bin);
gst_object_sink (bin);
/* we're queuing raw audio here, we can remove this queue when we can disable
* async behaviour in the video sink. */
chain->queue = gst_element_factory_make ("queue", "visqueue");
gst_bin_add (bin, chain->queue);
chain->conv = gst_element_factory_make ("audioconvert", "aconv");
if (chain->conv == NULL)
goto no_audioconvert;
gst_bin_add (bin, chain->conv);
chain->resample = gst_element_factory_make ("audioresample", "aresample");
if (chain->resample == NULL)
goto no_audioresample;
gst_bin_add (bin, chain->resample);
/* this pad will be used for blocking the dataflow and switching the vis
* plugin */
chain->blockpad = gst_element_get_static_pad (chain->resample, "src");
if (playsink->visualisation) {
GST_DEBUG_OBJECT (playsink, "trying configure vis");
chain->vis = try_element (playsink, playsink->visualisation, FALSE);
}
if (chain->vis == NULL) {
GST_DEBUG_OBJECT (playsink, "trying goom");
elem = gst_element_factory_make ("goom", "vis");
chain->vis = try_element (playsink, elem, TRUE);
}
if (chain->vis == NULL)
goto no_goom;
gst_bin_add (bin, chain->vis);
res = gst_element_link_pads (chain->queue, "src", chain->conv, "sink");
res &= gst_element_link_pads (chain->conv, "src", chain->resample, "sink");
res &= gst_element_link_pads (chain->resample, "src", chain->vis, "sink");
if (!res)
goto link_failed;
chain->vissinkpad = gst_element_get_static_pad (chain->vis, "sink");
chain->vissrcpad = gst_element_get_static_pad (chain->vis, "src");
pad = gst_element_get_static_pad (chain->queue, "sink");
chain->sinkpad = gst_ghost_pad_new ("sink", pad);
gst_object_unref (pad);
gst_element_add_pad (chain->chain.bin, chain->sinkpad);
chain->srcpad = gst_ghost_pad_new ("src", chain->vissrcpad);
gst_element_add_pad (chain->chain.bin, chain->srcpad);
return chain;
/* ERRORS */
no_audioconvert:
{
post_missing_element_message (playsink, "audioconvert");
GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"audioconvert"), ("possibly a liboil version mismatch?"));
free_chain ((GstPlayChain *) chain);
return NULL;
}
no_audioresample:
{
post_missing_element_message (playsink, "audioresample");
GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"audioresample"), (NULL));
free_chain ((GstPlayChain *) chain);
return NULL;
}
no_goom:
{
post_missing_element_message (playsink, "goom");
GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN,
(_("Missing element '%s' - check your GStreamer installation."),
"goom"), (NULL));
free_chain ((GstPlayChain *) chain);
return NULL;
}
link_failed:
{
GST_ELEMENT_ERROR (playsink, CORE, PAD,
(NULL), ("Failed to configure the visualisation element."));
free_chain ((GstPlayChain *) chain);
return NULL;
}
}
/* this function is called when all the request pads are requested and when we
* have to construct the final pipeline. Based on the flags we construct the
* final output pipelines.
*/
gboolean
gst_play_sink_reconfigure (GstPlaySink * playsink)
{
GstPlayFlags flags;
gboolean need_audio, need_video, need_vis, need_text, need_subp;
GST_DEBUG_OBJECT (playsink, "reconfiguring");
/* assume we need nothing */
need_audio = need_video = need_vis = need_text = need_subp = FALSE;
GST_PLAY_SINK_LOCK (playsink);
GST_OBJECT_LOCK (playsink);
/* get flags, there are protected with the object lock */
flags = playsink->flags;
GST_OBJECT_UNLOCK (playsink);
/* figure out which components we need */
if (flags & GST_PLAY_FLAG_TEXT && (playsink->text_pad || playsink->subp_pad)) {
/* we have a text_pad and we need text rendering, in this case we need a
* video_pad to combine the video with the text */
if (!playsink->video_pad)
goto subs_but_no_video;
/* we have subtitles and we are requested to show it, we also need to show
* video in this case. */
need_video = TRUE;
need_text = (playsink->text_pad != NULL);
need_subp = (playsink->subp_pad != NULL);
/* we can't handle both of them yet */
if (need_text && need_subp)
goto subs_and_text;
} else if (flags & GST_PLAY_FLAG_VIDEO && playsink->video_pad) {
/* we have video and we are requested to show it */
need_video = TRUE;
}
if (playsink->audio_pad) {
if (flags & GST_PLAY_FLAG_AUDIO) {
need_audio = TRUE;
}
if (playsink->audio_pad_raw) {
/* only can do vis with raw uncompressed audio */
if (flags & GST_PLAY_FLAG_VIS && !need_video) {
/* also add video when we add visualisation */
need_video = TRUE;
need_vis = TRUE;
}
}
}
/* set up video pipeline */
if (need_video) {
gboolean raw, async, queue;
/* we need a raw sink when we do vis or when we have a raw pad */
raw = need_vis ? TRUE : playsink->video_pad_raw;
/* we try to set the sink async=FALSE when we need vis, this way we can
* avoid a queue in the audio chain. */
async = !need_vis;
/* put a little queue in front of the video but only if we are not doing
* subpictures because then we will add the queue in front of the subpicture
* mixer to minimize latency. */
queue = (need_subp == FALSE);
GST_DEBUG_OBJECT (playsink, "adding video, raw %d",
playsink->video_pad_raw);
if (playsink->videochain) {
/* try to reactivate the chain */
if (!setup_video_chain (playsink, raw, async, queue)) {
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
free_chain ((GstPlayChain *) playsink->videochain);
playsink->videochain = NULL;
}
}
if (!playsink->videochain) {
playsink->videochain = gen_video_chain (playsink, raw, async, queue);
}
if (playsink->videochain) {
GST_DEBUG_OBJECT (playsink, "adding video chain");
add_chain (GST_PLAY_CHAIN (playsink->videochain), TRUE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), TRUE);
/* if we are not part of vis or subtitles, set the ghostpad target */
if (!need_vis && !need_text && playsink->text_pad == NULL) {
GST_DEBUG_OBJECT (playsink, "ghosting video sinkpad");
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
playsink->videochain->sinkpad);
}
}
} else {
GST_DEBUG_OBJECT (playsink, "no video needed");
if (playsink->videochain) {
GST_DEBUG_OBJECT (playsink, "removing video chain");
if (playsink->vischain) {
GstPad *srcpad;
GST_DEBUG_OBJECT (playsink, "unlinking vis chain");
/* also had visualisation, release the tee srcpad before we then
* unlink the video from it */
if (playsink->audio_tee_vissrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_vissrc);
gst_object_unref (playsink->audio_tee_vissrc);
playsink->audio_tee_vissrc = NULL;
}
srcpad =
gst_element_get_static_pad (GST_ELEMENT_CAST (playsink->
vischain->chain.bin), "src");
gst_pad_unlink (srcpad, playsink->videochain->sinkpad);
}
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
}
if (playsink->video_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL);
}
if (need_text) {
GST_DEBUG_OBJECT (playsink, "adding text");
if (!playsink->textchain) {
GST_DEBUG_OBJECT (playsink, "creating text chain");
playsink->textchain = gen_text_chain (playsink);
}
if (playsink->textchain) {
GST_DEBUG_OBJECT (playsink, "adding text chain");
add_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad),
playsink->textchain->textsinkpad);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
playsink->textchain->videosinkpad);
gst_pad_link (playsink->textchain->srcpad, playsink->videochain->sinkpad);
activate_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE);
if (playsink->textchain->overlay)
g_object_set (playsink->textchain->overlay, "silent", FALSE, NULL);
}
} else {
GST_DEBUG_OBJECT (playsink, "no text needed");
/* we have no subtitles/text or we are requested to not show them */
if (playsink->textchain) {
if (playsink->text_pad == NULL) {
/* no text pad, remove the chain entirely */
GST_DEBUG_OBJECT (playsink, "removing text chain");
add_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE);
} else {
/* we have a chain and a textpad, turn the subtitles off */
GST_DEBUG_OBJECT (playsink, "turning off the text");
if (playsink->textchain->overlay)
g_object_set (playsink->textchain->overlay, "silent", TRUE, NULL);
}
}
if (!need_video && playsink->video_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL);
if (playsink->text_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad), NULL);
}
if (need_subp) {
GST_DEBUG_OBJECT (playsink, "adding subpicture");
if (!playsink->subpchain) {
GST_DEBUG_OBJECT (playsink, "creating subpicture chain");
playsink->subpchain = gen_subp_chain (playsink);
}
if (playsink->subpchain) {
GST_DEBUG_OBJECT (playsink, "adding subp chain");
add_chain (GST_PLAY_CHAIN (playsink->subpchain), TRUE);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->subp_pad),
playsink->subpchain->subpsinkpad);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad),
playsink->subpchain->videosinkpad);
gst_pad_link (playsink->subpchain->srcpad, playsink->videochain->sinkpad);
activate_chain (GST_PLAY_CHAIN (playsink->subpchain), TRUE);
}
} else {
GST_DEBUG_OBJECT (playsink, "no subpicture needed");
/* we have no subpicture or we are requested to not show them */
if (playsink->subpchain) {
if (playsink->subp_pad == NULL) {
/* no subpicture pad, remove the chain entirely */
GST_DEBUG_OBJECT (playsink, "removing subp chain");
add_chain (GST_PLAY_CHAIN (playsink->subpchain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->subpchain), FALSE);
} else {
/* we have a chain and a subpicture pad, turn the subtitles off */
GST_DEBUG_OBJECT (playsink, "turning off the subp");
}
}
if (!need_video && playsink->video_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL);
if (playsink->subp_pad)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->subp_pad), NULL);
}
if (need_audio) {
gboolean raw, queue;
GST_DEBUG_OBJECT (playsink, "adding audio");
/* get a raw sink if we are asked for a raw pad */
raw = playsink->audio_pad_raw;
if (need_vis && playsink->videochain) {
/* If we are dealing with visualisations, we need to add a queue to
* decouple the audio from the video part. We only have to do this when
* the video part is async=true */
queue = ((GstPlayVideoChain *) playsink->videochain)->async;
GST_DEBUG_OBJECT (playsink, "need audio queue for vis: %d", queue);
} else {
/* no vis, we can avoid a queue */
GST_DEBUG_OBJECT (playsink, "don't need audio queue");
queue = FALSE;
}
if (playsink->audiochain) {
/* try to reactivate the chain */
if (!setup_audio_chain (playsink, raw, queue)) {
GST_DEBUG_OBJECT (playsink, "removing current audio chain");
if (playsink->audio_tee_asrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_asrc);
gst_object_unref (playsink->audio_tee_asrc);
playsink->audio_tee_asrc = NULL;
}
add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
free_chain ((GstPlayChain *) playsink->audiochain);
playsink->audiochain = NULL;
}
}
if (!playsink->audiochain) {
GST_DEBUG_OBJECT (playsink, "creating new audio chain");
playsink->audiochain = gen_audio_chain (playsink, raw, queue);
}
if (playsink->audiochain) {
GST_DEBUG_OBJECT (playsink, "adding audio chain");
if (playsink->audio_tee_asrc == NULL) {
playsink->audio_tee_asrc =
gst_element_get_request_pad (playsink->audio_tee, "src%d");
}
add_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE);
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE);
gst_pad_link (playsink->audio_tee_asrc, playsink->audiochain->sinkpad);
}
} else {
GST_DEBUG_OBJECT (playsink, "no audio needed");
/* we have no audio or we are requested to not play audio */
if (playsink->audiochain) {
GST_DEBUG_OBJECT (playsink, "removing audio chain");
/* release the audio pad */
if (playsink->audio_tee_asrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_asrc);
gst_object_unref (playsink->audio_tee_asrc);
playsink->audio_tee_asrc = NULL;
}
add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
}
}
if (need_vis) {
GstPad *srcpad;
if (!playsink->vischain)
playsink->vischain = gen_vis_chain (playsink);
GST_DEBUG_OBJECT (playsink, "adding visualisation");
if (playsink->vischain) {
GST_DEBUG_OBJECT (playsink, "setting up vis chain");
srcpad =
gst_element_get_static_pad (GST_ELEMENT_CAST (playsink->
vischain->chain.bin), "src");
add_chain (GST_PLAY_CHAIN (playsink->vischain), TRUE);
activate_chain (GST_PLAY_CHAIN (playsink->vischain), TRUE);
if (playsink->audio_tee_vissrc == NULL) {
playsink->audio_tee_vissrc =
gst_element_get_request_pad (playsink->audio_tee, "src%d");
}
gst_pad_link (playsink->audio_tee_vissrc, playsink->vischain->sinkpad);
gst_pad_link (srcpad, playsink->videochain->sinkpad);
gst_object_unref (srcpad);
}
} else {
GST_DEBUG_OBJECT (playsink, "no vis needed");
if (playsink->vischain) {
if (playsink->audio_tee_vissrc) {
gst_element_release_request_pad (playsink->audio_tee,
playsink->audio_tee_vissrc);
gst_object_unref (playsink->audio_tee_vissrc);
playsink->audio_tee_vissrc = NULL;
}
GST_DEBUG_OBJECT (playsink, "removing vis chain");
add_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE);
activate_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE);
}
}
do_async_done (playsink);
GST_PLAY_SINK_UNLOCK (playsink);
return TRUE;
/* ERRORS */
subs_but_no_video:
{
GST_ELEMENT_ERROR (playsink, STREAM, FORMAT,
(_("Can't play a text file without video.")),
("Have text pad but no video pad"));
GST_PLAY_SINK_UNLOCK (playsink);
return FALSE;
}
subs_and_text:
{
GST_ELEMENT_ERROR (playsink, STREAM, FORMAT,
(_("Can't play a text subtitles and subpictures.")),
("Have text pad and subpicture pad"));
GST_PLAY_SINK_UNLOCK (playsink);
return FALSE;
}
}
/**
* gst_play_sink_set_flags:
* @playsink: a #GstPlaySink
* @flags: #GstPlayFlags
*
* Configure @flags on @playsink. The flags control the behaviour of @playsink
* when constructing the sink pipelins.
*
* Returns: TRUE if the flags could be configured.
*/
gboolean
gst_play_sink_set_flags (GstPlaySink * playsink, GstPlayFlags flags)
{
g_return_val_if_fail (GST_IS_PLAY_SINK (playsink), FALSE);
GST_OBJECT_LOCK (playsink);
playsink->flags = flags;
GST_OBJECT_UNLOCK (playsink);
return TRUE;
}
/**
* gst_play_sink_get_flags:
* @playsink: a #GstPlaySink
*
* Get the flags of @playsink. That flags control the behaviour of the sink when
* it constructs the sink pipelines.
*
* Returns: the currently configured #GstPlayFlags.
*/
GstPlayFlags
gst_play_sink_get_flags (GstPlaySink * playsink)
{
GstPlayFlags res;
g_return_val_if_fail (GST_IS_PLAY_SINK (playsink), 0);
GST_OBJECT_LOCK (playsink);
res = playsink->flags;
GST_OBJECT_UNLOCK (playsink);
return res;
}
void
gst_play_sink_set_font_desc (GstPlaySink * playsink, const gchar * desc)
{
GstPlayTextChain *chain;
GST_PLAY_SINK_LOCK (playsink);
chain = (GstPlayTextChain *) playsink->textchain;
g_free (playsink->font_desc);
playsink->font_desc = g_strdup (desc);
if (chain && chain->overlay) {
g_object_set (chain->overlay, "font-desc", desc, NULL);
}
GST_PLAY_SINK_UNLOCK (playsink);
}
gchar *
gst_play_sink_get_font_desc (GstPlaySink * playsink)
{
gchar *result = NULL;
GstPlayTextChain *chain;
GST_PLAY_SINK_LOCK (playsink);
chain = (GstPlayTextChain *) playsink->textchain;
if (chain && chain->overlay) {
g_object_get (chain->overlay, "font-desc", &result, NULL);
playsink->font_desc = g_strdup (result);
} else {
result = g_strdup (playsink->font_desc);
}
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
/**
* gst_play_sink_get_last_frame:
* @playsink: a #GstPlaySink
*
* Get the last displayed frame from @playsink. This frame is in the native
* format of the sink element, the caps on the result buffer contain the format
* of the frame data.
*
* Returns: a #GstBuffer with the frame data or %NULL when no video frame is
* available.
*/
GstBuffer *
gst_play_sink_get_last_frame (GstPlaySink * playsink)
{
GstBuffer *result = NULL;
GstPlayVideoChain *chain;
GST_PLAY_SINK_LOCK (playsink);
GST_DEBUG_OBJECT (playsink, "taking last frame");
/* get the video chain if we can */
if ((chain = (GstPlayVideoChain *) playsink->videochain)) {
GST_DEBUG_OBJECT (playsink, "found video chain");
/* see if the chain is active */
if (chain->chain.activated && chain->sink) {
GstElement *elem;
GST_DEBUG_OBJECT (playsink, "video chain active and has a sink");
/* find and get the last-buffer property now */
if ((elem =
gst_play_sink_find_property (playsink, chain->sink,
"last-buffer"))) {
GST_DEBUG_OBJECT (playsink, "getting last-buffer property");
g_object_get (elem, "last-buffer", &result, NULL);
gst_object_unref (elem);
}
}
}
GST_PLAY_SINK_UNLOCK (playsink);
return result;
}
/**
* gst_play_sink_request_pad
* @playsink: a #GstPlaySink
* @type: a #GstPlaySinkType
*
* Create or return a pad of @type.
*
* Returns: a #GstPad of @type or %NULL when the pad could not be created.
*/
GstPad *
gst_play_sink_request_pad (GstPlaySink * playsink, GstPlaySinkType type)
{
GstPad *res = NULL;
gboolean created = FALSE;
gboolean raw = FALSE;
gboolean activate = TRUE;
GST_DEBUG_OBJECT (playsink, "request pad type %d", type);
GST_PLAY_SINK_LOCK (playsink);
switch (type) {
case GST_PLAY_SINK_TYPE_AUDIO_RAW:
raw = TRUE;
case GST_PLAY_SINK_TYPE_AUDIO:
if (!playsink->audio_tee) {
GST_LOG_OBJECT (playsink, "creating tee");
/* create tee when needed. This element will feed the audio sink chain
* and the vis chain. */
playsink->audio_tee = gst_element_factory_make ("tee", "audiotee");
playsink->audio_tee_sink =
gst_element_get_static_pad (playsink->audio_tee, "sink");
gst_bin_add (GST_BIN_CAST (playsink), playsink->audio_tee);
gst_element_set_state (playsink->audio_tee, GST_STATE_PAUSED);
} else {
gst_element_set_state (playsink->audio_tee, GST_STATE_PAUSED);
}
if (!playsink->audio_pad) {
GST_LOG_OBJECT (playsink, "ghosting tee sinkpad");
playsink->audio_pad =
gst_ghost_pad_new ("audio_sink", playsink->audio_tee_sink);
created = TRUE;
}
playsink->audio_pad_raw = raw;
res = playsink->audio_pad;
break;
case GST_PLAY_SINK_TYPE_VIDEO_RAW:
raw = TRUE;
case GST_PLAY_SINK_TYPE_VIDEO:
if (!playsink->video_pad) {
GST_LOG_OBJECT (playsink, "ghosting videosink");
playsink->video_pad =
gst_ghost_pad_new_no_target ("video_sink", GST_PAD_SINK);
created = TRUE;
}
playsink->video_pad_raw = raw;
res = playsink->video_pad;
break;
case GST_PLAY_SINK_TYPE_TEXT:
GST_LOG_OBJECT (playsink, "ghosting text");
if (!playsink->text_pad) {
playsink->text_pad =
gst_ghost_pad_new_no_target ("text_sink", GST_PAD_SINK);
created = TRUE;
}
res = playsink->text_pad;
break;
case GST_PLAY_SINK_TYPE_FLUSHING:
{
gchar *padname;
/* we need a unique padname for the flushing pad. */
padname = g_strdup_printf ("flushing_%d", playsink->count);
res = gst_ghost_pad_new_no_target (padname, GST_PAD_SINK);
g_free (padname);
playsink->count++;
activate = FALSE;
created = TRUE;
break;
}
case GST_PLAY_SINK_TYPE_SUBPIC:
GST_LOG_OBJECT (playsink, "ghosting subpicture pad");
if (!playsink->subp_pad) {
playsink->subp_pad =
gst_ghost_pad_new_no_target ("subp_sink", GST_PAD_SINK);
created = TRUE;
}
res = playsink->subp_pad;
break;
default:
res = NULL;
break;
}
GST_PLAY_SINK_UNLOCK (playsink);
if (created && res) {
/* we have to add the pad when it's active or we get an error when the
* element is 'running' */
gst_pad_set_active (res, TRUE);
gst_element_add_pad (GST_ELEMENT_CAST (playsink), res);
if (!activate)
gst_pad_set_active (res, activate);
}
return res;
}
void
gst_play_sink_release_pad (GstPlaySink * playsink, GstPad * pad)
{
GstPad **res = NULL;
gboolean untarget = TRUE;
GST_DEBUG_OBJECT (playsink, "release pad %" GST_PTR_FORMAT, pad);
GST_PLAY_SINK_LOCK (playsink);
if (pad == playsink->video_pad) {
res = &playsink->video_pad;
} else if (pad == playsink->audio_pad) {
res = &playsink->audio_pad;
} else if (pad == playsink->text_pad) {
res = &playsink->text_pad;
} else if (pad == playsink->subp_pad) {
res = &playsink->subp_pad;
} else {
/* try to release the given pad anyway, these could be the FLUSHING pads. */
res = &pad;
untarget = FALSE;
}
GST_PLAY_SINK_UNLOCK (playsink);
if (*res) {
GST_DEBUG_OBJECT (playsink, "deactivate pad %" GST_PTR_FORMAT, *res);
gst_pad_set_active (*res, FALSE);
if (untarget) {
GST_DEBUG_OBJECT (playsink, "untargeting pad %" GST_PTR_FORMAT, *res);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (*res), NULL);
}
GST_DEBUG_OBJECT (playsink, "remove pad %" GST_PTR_FORMAT, *res);
gst_element_remove_pad (GST_ELEMENT_CAST (playsink), *res);
*res = NULL;
}
}
/* Send an event to our sinks until one of them works; don't then send to the
* remaining sinks (unlike GstBin)
*/
static gboolean
gst_play_sink_send_event_to_sink (GstPlaySink * playsink, GstEvent * event)
{
gboolean res = TRUE;
if (playsink->videochain) {
gst_event_ref (event);
if ((res = gst_element_send_event (playsink->videochain->chain.bin, event))) {
GST_DEBUG_OBJECT (playsink, "Sent event succesfully to video sink");
goto done;
}
GST_DEBUG_OBJECT (playsink, "Event failed when sent to video sink");
}
if (playsink->audiochain) {
gst_event_ref (event);
if ((res = gst_element_send_event (playsink->audiochain->chain.bin, event))) {
GST_DEBUG_OBJECT (playsink, "Sent event succesfully to audio sink");
goto done;
}
GST_DEBUG_OBJECT (playsink, "Event failed when sent to audio sink");
}
done:
gst_event_unref (event);
return res;
}
/* We only want to send the event to a single sink (overriding GstBin's
* behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
* events appropriately. So, this is a messy duplication of code. */
static gboolean
gst_play_sink_send_event (GstElement * element, GstEvent * event)
{
gboolean res = FALSE;
GstEventType event_type = GST_EVENT_TYPE (event);
switch (event_type) {
case GST_EVENT_SEEK:
GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
res = gst_play_sink_send_event_to_sink (GST_PLAY_SINK (element), event);
break;
default:
res =
GST_ELEMENT_CLASS (gst_play_sink_parent_class)->send_event (element,
event);
break;
}
return res;
}
static GstStateChangeReturn
gst_play_sink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstStateChangeReturn bret;
GstPlaySink *playsink;
playsink = GST_PLAY_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
/* we want to go async to PAUSED until we managed to configure and add the
* sinks */
do_async_start (playsink);
ret = GST_STATE_CHANGE_ASYNC;
break;
default:
/* all other state changes return SUCCESS by default, this value can be
* overridden by the result of the children */
ret = GST_STATE_CHANGE_SUCCESS;
break;
}
/* do the state change of the children */
bret =
GST_ELEMENT_CLASS (gst_play_sink_parent_class)->change_state (element,
transition);
/* now look at the result of our children and adjust the return value */
switch (bret) {
case GST_STATE_CHANGE_FAILURE:
/* failure, we stop */
goto activate_failed;
case GST_STATE_CHANGE_NO_PREROLL:
/* some child returned NO_PREROLL. This is strange but we never know. We
* commit our async state change (if any) and return the NO_PREROLL */
do_async_done (playsink);
ret = bret;
break;
case GST_STATE_CHANGE_ASYNC:
/* some child was async, return this */
ret = bret;
break;
default:
/* return our previously configured return value */
break;
}
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
/* FIXME Release audio device when we implement that */
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* remove sinks we added */
if (playsink->videochain) {
activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE);
}
if (playsink->audiochain) {
activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE);
}
if (playsink->vischain) {
activate_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE);
add_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE);
}
if (playsink->textchain) {
activate_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE);
add_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE);
}
do_async_done (playsink);
break;
default:
break;
}
return ret;
/* ERRORS */
activate_failed:
{
GST_DEBUG_OBJECT (element,
"element failed to change states -- activation problem?");
return GST_STATE_CHANGE_FAILURE;
}
}
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