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gstreamer/ges/ges-timeline-pipeline.c
Thibault Saunier 7e121ff167 ges: Protect from Gst dynamic callbacks 
The pad-added and no-more-pad signal can be emited from any thread
so we have to protect our code from that
2013-05-29 17:14:31 -04:00

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/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:ges-timeline-pipeline
* @short_description: Convenience GstPipeline for editing.
*
* #GESTimelinePipeline allows developers to view and render #GESTimeline
* in a simple fashion.
* Its usage is inspired by the 'playbin' element from gst-plugins-base.
*/
#include <gst/gst.h>
#include <gst/video/videooverlay.h>
#include <stdio.h>
#include "ges-internal.h"
#include "ges-timeline-pipeline.h"
#include "ges-screenshot.h"
#define DEFAULT_TIMELINE_MODE TIMELINE_MODE_PREVIEW
/* lock to protect dynamic callbacks, like pad-added or nmp */
#define DYN_LOCK(pipeline) (&GES_TIMELINE_PIPELINE (pipeline)->priv->dyn_mutex)
#define LOCK_DYN(pipeline) G_STMT_START { \
GST_INFO_OBJECT (pipeline, "Getting dynamic lock from %p", \
g_thread_self()); \
g_mutex_lock (DYN_LOCK (pipeline)); \
GST_INFO_OBJECT (pipeline, "Got Dynamic lock from %p", \
g_thread_self()); \
} G_STMT_END
#define UNLOCK_DYN(pipeline) G_STMT_START { \
GST_INFO_OBJECT (pipeline, "Unlocking dynamic lock from %p", \
g_thread_self()); \
g_mutex_unlock (DYN_LOCK (pipeline)); \
GST_INFO_OBJECT (pipeline, "Unlocked Dynamic lock from %p", \
g_thread_self()); \
} G_STMT_END
/* Structure corresponding to a timeline - sink link */
typedef struct
{
GESTrack *track;
GstElement *tee;
GstPad *srcpad; /* Timeline source pad */
GstPad *playsinkpad;
GstPad *encodebinpad;
GstPad *blocked_pad;
gulong probe_id;
} OutputChain;
struct _GESTimelinePipelinePrivate
{
GESTimeline *timeline;
GstElement *playsink;
GstElement *encodebin;
/* Note : urisink is only created when a URI has been provided */
GstElement *urisink;
GESPipelineFlags mode;
GMutex dyn_mutex;
GList *chains;
GstEncodingProfile *profile;
};
enum
{
PROP_0,
PROP_AUDIO_SINK,
PROP_VIDEO_SINK,
PROP_TIMELINE,
PROP_MODE,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static GstStateChangeReturn ges_timeline_pipeline_change_state (GstElement *
element, GstStateChange transition);
static OutputChain *get_output_chain_for_track (GESTimelinePipeline * self,
GESTrack * track);
static OutputChain *new_output_chain_for_track (GESTimelinePipeline * self,
GESTrack * track);
/****************************************************
* Video Overlay vmethods implementation *
****************************************************/
static void
_overlay_expose (GstVideoOverlay * overlay)
{
GESTimelinePipeline *pipeline = GES_TIMELINE_PIPELINE (overlay);
gst_video_overlay_expose (GST_VIDEO_OVERLAY (pipeline->priv->playsink));
}
static void
_overlay_handle_events (GstVideoOverlay * overlay, gboolean handle_events)
{
GESTimelinePipeline *pipeline = GES_TIMELINE_PIPELINE (overlay);
gst_video_overlay_handle_events (GST_VIDEO_OVERLAY (pipeline->priv->playsink),
handle_events);
}
static void
_overlay_set_render_rectangle (GstVideoOverlay * overlay, gint x,
gint y, gint width, gint height)
{
GESTimelinePipeline *pipeline = GES_TIMELINE_PIPELINE (overlay);
gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (pipeline->priv->
playsink), x, y, width, height);
}
static void
_overlay_set_window_handle (GstVideoOverlay * overlay, guintptr handle)
{
GESTimelinePipeline *pipeline = GES_TIMELINE_PIPELINE (overlay);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (pipeline->
priv->playsink), handle);
}
static void
video_overlay_init (gpointer g_iface, gpointer g_iface_data)
{
GstVideoOverlayInterface *iface = (GstVideoOverlayInterface *) g_iface;
iface->expose = _overlay_expose;
iface->handle_events = _overlay_handle_events;
iface->set_render_rectangle = _overlay_set_render_rectangle;
iface->set_window_handle = _overlay_set_window_handle;
}
G_DEFINE_TYPE_WITH_CODE (GESTimelinePipeline, ges_timeline_pipeline,
GST_TYPE_PIPELINE,
G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY, video_overlay_init));
static void
ges_timeline_pipeline_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTimelinePipeline *self = GES_TIMELINE_PIPELINE (object);
switch (property_id) {
case PROP_AUDIO_SINK:
g_object_get_property (G_OBJECT (self->priv->playsink), "audio-sink",
value);
break;
case PROP_VIDEO_SINK:
g_object_get_property (G_OBJECT (self->priv->playsink), "video-sink",
value);
break;
case PROP_TIMELINE:
g_value_set_object (value, self->priv->timeline);
break;
case PROP_MODE:
g_value_set_flags (value, self->priv->mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_pipeline_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelinePipeline *self = GES_TIMELINE_PIPELINE (object);
switch (property_id) {
case PROP_AUDIO_SINK:
g_object_set_property (G_OBJECT (self->priv->playsink), "audio-sink",
value);
break;
case PROP_VIDEO_SINK:
g_object_set_property (G_OBJECT (self->priv->playsink), "video-sink",
value);
break;
case PROP_TIMELINE:
ges_timeline_pipeline_add_timeline (GES_TIMELINE_PIPELINE (object),
g_value_get_object (value));
break;
case PROP_MODE:
ges_timeline_pipeline_set_mode (GES_TIMELINE_PIPELINE (object),
g_value_get_flags (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_pipeline_dispose (GObject * object)
{
GESTimelinePipeline *self = GES_TIMELINE_PIPELINE (object);
if (self->priv->playsink) {
if (self->priv->mode & (TIMELINE_MODE_PREVIEW))
gst_bin_remove (GST_BIN (object), self->priv->playsink);
else
gst_object_unref (self->priv->playsink);
self->priv->playsink = NULL;
}
if (self->priv->encodebin) {
if (self->priv->mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))
gst_bin_remove (GST_BIN (object), self->priv->encodebin);
else
gst_object_unref (self->priv->encodebin);
self->priv->encodebin = NULL;
}
if (self->priv->profile) {
gst_encoding_profile_unref (self->priv->profile);
self->priv->profile = NULL;
}
G_OBJECT_CLASS (ges_timeline_pipeline_parent_class)->dispose (object);
}
static void
ges_timeline_pipeline_class_init (GESTimelinePipelineClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTimelinePipelinePrivate));
object_class->dispose = ges_timeline_pipeline_dispose;
object_class->get_property = ges_timeline_pipeline_get_property;
object_class->set_property = ges_timeline_pipeline_set_property;
/**
* GESTimelinePipeline:audio-sink:
*
* Audio sink for the preview.
*/
properties[PROP_AUDIO_SINK] = g_param_spec_object ("audio-sink", "Audio Sink",
"Audio sink for the preview.",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_AUDIO_SINK,
properties[PROP_AUDIO_SINK]);
/**
* GESTimelinePipeline:video-sink:
*
* Video sink for the preview.
*/
properties[PROP_VIDEO_SINK] = g_param_spec_object ("video-sink", "Video Sink",
"Video sink for the preview.",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_VIDEO_SINK,
properties[PROP_VIDEO_SINK]);
/**
* GESTimelinePipeline:timeline:
*
* Timeline to use in this pipeline. See also
* ges_timeline_pipeline_add_timeline() for more info.
*/
properties[PROP_TIMELINE] = g_param_spec_object ("timeline", "Timeline",
"Timeline to use in this pipeline. See also "
"ges_timeline_pipeline_add_timeline() for more info.",
GES_TYPE_TIMELINE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_TIMELINE,
properties[PROP_TIMELINE]);
/**
* GESTimelinePipeline:mode:
*
* Pipeline mode. See ges_timeline_pipeline_set_mode() for more
* info.
*/
properties[PROP_MODE] = g_param_spec_flags ("mode", "Mode",
"Pipeline mode. See ges_timeline_pipeline_set_mode() for more info.",
GES_TYPE_PIPELINE_FLAGS, DEFAULT_TIMELINE_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_MODE,
properties[PROP_MODE]);
element_class->change_state =
GST_DEBUG_FUNCPTR (ges_timeline_pipeline_change_state);
/* TODO : Add state_change handlers
* Don't change state if we don't have a timeline */
}
static void
ges_timeline_pipeline_init (GESTimelinePipeline * self)
{
GST_INFO_OBJECT (self, "Creating new 'playsink'");
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_TIMELINE_PIPELINE, GESTimelinePipelinePrivate);
self->priv->playsink =
gst_element_factory_make ("playsink", "internal-sinks");
self->priv->encodebin =
gst_element_factory_make ("encodebin", "internal-encodebin");
/* Limit encodebin buffering to 1 buffer since we know the various
* stream fed to it are decoupled already */
g_object_set (self->priv->encodebin, "queue-buffers-max", (guint) 1,
"queue-bytes-max", (guint) 0, "queue-time-max", (guint64) 0,
"avoid-reencoding", TRUE, NULL);
if (G_UNLIKELY (self->priv->playsink == NULL))
goto no_playsink;
if (G_UNLIKELY (self->priv->encodebin == NULL))
goto no_encodebin;
ges_timeline_pipeline_set_mode (self, DEFAULT_TIMELINE_MODE);
return;
no_playsink:
{
GST_ERROR_OBJECT (self, "Can't create playsink instance !");
return;
}
no_encodebin:
{
GST_ERROR_OBJECT (self, "Can't create encodebin instance !");
return;
}
}
/**
* ges_timeline_pipeline_new:
*
* Creates a new conveninence #GESTimelinePipeline.
*
* Returns: the new #GESTimelinePipeline.
*/
GESTimelinePipeline *
ges_timeline_pipeline_new (void)
{
return g_object_new (GES_TYPE_TIMELINE_PIPELINE, NULL);
}
#define TRACK_COMPATIBLE_PROFILE(tracktype, profile) \
( (GST_IS_ENCODING_AUDIO_PROFILE (profile) && (tracktype) == GES_TRACK_TYPE_AUDIO) || \
(GST_IS_ENCODING_VIDEO_PROFILE (profile) && (tracktype) == GES_TRACK_TYPE_VIDEO))
static gboolean
ges_timeline_pipeline_update_caps (GESTimelinePipeline * self)
{
GList *ltrack, *tracks, *lstream;
if (!self->priv->profile)
return TRUE;
GST_DEBUG ("Updating track caps");
tracks = ges_timeline_get_tracks (self->priv->timeline);
/* Take each stream of the encoding profile and find a matching
* track to set the caps on */
for (ltrack = tracks; ltrack; ltrack = ltrack->next) {
GESTrack *track = (GESTrack *) ltrack->data;
GList *allstreams;
allstreams = (GList *)
gst_encoding_container_profile_get_profiles (
(GstEncodingContainerProfile *) self->priv->profile);
/* Find a matching stream setting */
for (lstream = allstreams; lstream; lstream = lstream->next) {
GstEncodingProfile *prof = (GstEncodingProfile *) lstream->data;
if (TRACK_COMPATIBLE_PROFILE (track->type, prof)) {
if (self->priv->mode == TIMELINE_MODE_SMART_RENDER) {
GstCaps *ocaps, *rcaps;
GST_DEBUG ("Smart Render mode, setting input caps");
ocaps = gst_encoding_profile_get_input_caps (prof);
if (track->type == GES_TRACK_TYPE_AUDIO)
rcaps = gst_caps_new_empty_simple ("audio/x-raw");
else
rcaps = gst_caps_new_empty_simple ("video/x-raw");
gst_caps_append (ocaps, rcaps);
ges_track_set_caps (track, ocaps);
} else {
GstCaps *caps = NULL;
/* Raw preview or rendering mode */
if (track->type == GES_TRACK_TYPE_VIDEO)
caps = gst_caps_new_empty_simple ("video/x-raw");
else if (track->type == GES_TRACK_TYPE_AUDIO)
caps = gst_caps_new_empty_simple ("audio/x-raw");
if (caps) {
ges_track_set_caps (track, caps);
gst_caps_unref (caps);
}
}
break;
}
}
gst_object_unref (track);
}
if (tracks)
g_list_free (tracks);
GST_DEBUG ("Done updating caps");
return TRUE;
}
static GstStateChangeReturn
ges_timeline_pipeline_change_state (GstElement * element,
GstStateChange transition)
{
GESTimelinePipeline *self;
GstStateChangeReturn ret;
self = GES_TIMELINE_PIPELINE (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (G_UNLIKELY (self->priv->timeline == NULL)) {
GST_ERROR_OBJECT (element,
"No GESTimeline set on the pipeline, cannot play !");
ret = GST_STATE_CHANGE_FAILURE;
goto done;
}
if (self->priv->
mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))
GST_DEBUG ("rendering => Updating pipeline caps");
if (!ges_timeline_pipeline_update_caps (self)) {
GST_ERROR_OBJECT (element, "Error setting the caps for rendering");
ret = GST_STATE_CHANGE_FAILURE;
goto done;
}
/* Set caps on all tracks according to profile if present */
break;
default:
break;
}
ret =
GST_ELEMENT_CLASS (ges_timeline_pipeline_parent_class)->change_state
(element, transition);
done:
return ret;
}
static OutputChain *
new_output_chain_for_track (GESTimelinePipeline * self, GESTrack * track)
{
OutputChain *chain;
chain = g_new0 (OutputChain, 1);
chain->track = track;
return chain;
}
/* Should be called with LOCK_DYN */
static OutputChain *
get_output_chain_for_track (GESTimelinePipeline * self, GESTrack * track)
{
GList *tmp;
for (tmp = self->priv->chains; tmp; tmp = tmp->next) {
OutputChain *chain = (OutputChain *) tmp->data;
if (chain->track == track)
return chain;
}
return NULL;
}
/* Fetches a compatible pad on the target element which isn't already
* linked */
static GstPad *
get_compatible_unlinked_pad (GstElement * element, GstPad * pad)
{
GstPad *res = NULL;
GstIterator *pads;
gboolean done = FALSE;
GstCaps *srccaps;
GValue paditem = { 0, };
if (G_UNLIKELY (pad == NULL))
goto no_pad;
GST_DEBUG ("element : %s, pad %s:%s",
GST_ELEMENT_NAME (element), GST_DEBUG_PAD_NAME (pad));
if (GST_PAD_DIRECTION (pad) == GST_PAD_SRC)
pads = gst_element_iterate_sink_pads (element);
else
pads = gst_element_iterate_src_pads (element);
srccaps = gst_pad_query_caps (pad, NULL);
GST_DEBUG ("srccaps %" GST_PTR_FORMAT, srccaps);
while (!done) {
switch (gst_iterator_next (pads, &paditem)) {
case GST_ITERATOR_OK:
{
GstPad *testpad = g_value_get_object (&paditem);
if (!gst_pad_is_linked (testpad)) {
GstCaps *sinkcaps = gst_pad_query_caps (testpad, NULL);
GST_DEBUG ("sinkccaps %" GST_PTR_FORMAT, sinkcaps);
if (gst_caps_can_intersect (srccaps, sinkcaps)) {
res = gst_object_ref (testpad);
done = TRUE;
}
gst_caps_unref (sinkcaps);
}
g_value_reset (&paditem);
}
break;
case GST_ITERATOR_DONE:
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pads);
break;
}
}
g_value_reset (&paditem);
gst_iterator_free (pads);
gst_caps_unref (srccaps);
return res;
no_pad:
{
GST_ERROR ("No pad to check against");
return NULL;
}
}
static GstPadProbeReturn
pad_blocked (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
/* no nothing */
GST_DEBUG_OBJECT (pad, "blocked callback, blocked");
return GST_PAD_PROBE_OK;
}
static void
pad_added_cb (GstElement * timeline, GstPad * pad, GESTimelinePipeline * self)
{
OutputChain *chain;
GESTrack *track;
GstPad *sinkpad;
GstCaps *caps;
gboolean reconfigured = FALSE;
LOCK_DYN (self);
caps = gst_pad_query_caps (pad, NULL);
GST_DEBUG_OBJECT (self, "new pad %s:%s , caps:%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), caps);
gst_caps_unref (caps);
track = ges_timeline_get_track_for_pad (self->priv->timeline, pad);
if (G_UNLIKELY (!track)) {
GST_WARNING_OBJECT (self, "Couldn't find coresponding track !");
UNLOCK_DYN (self);
return;
}
/* Don't connect track if it's not going to be used */
if (track->type == GES_TRACK_TYPE_VIDEO &&
!(self->priv->mode & TIMELINE_MODE_PREVIEW_VIDEO) &&
!(self->priv->mode & TIMELINE_MODE_RENDER) &&
!(self->priv->mode & TIMELINE_MODE_SMART_RENDER)) {
GST_DEBUG_OBJECT (self, "Video track... but we don't need it. Not linking");
}
if (track->type == GES_TRACK_TYPE_AUDIO &&
!(self->priv->mode & TIMELINE_MODE_PREVIEW_AUDIO) &&
!(self->priv->mode & TIMELINE_MODE_RENDER) &&
!(self->priv->mode & TIMELINE_MODE_SMART_RENDER)) {
GST_DEBUG_OBJECT (self, "Audio track... but we don't need it. Not linking");
}
/* Get an existing chain or create it */
if (!(chain = get_output_chain_for_track (self, track)))
chain = new_output_chain_for_track (self, track);
chain->srcpad = pad;
/* Adding tee */
chain->tee = gst_element_factory_make ("tee", NULL);
gst_bin_add (GST_BIN_CAST (self), chain->tee);
gst_element_sync_state_with_parent (chain->tee);
/* Linking pad to tee */
sinkpad = gst_element_get_static_pad (chain->tee, "sink");
gst_pad_link_full (pad, sinkpad, GST_PAD_LINK_CHECK_NOTHING);
gst_object_unref (sinkpad);
/* Connect playsink */
if (self->priv->mode & TIMELINE_MODE_PREVIEW) {
const gchar *sinkpad_name;
GstPad *tmppad;
GST_DEBUG_OBJECT (self, "Connecting to playsink");
switch (track->type) {
case GES_TRACK_TYPE_VIDEO:
sinkpad_name = "video_sink";
break;
case GES_TRACK_TYPE_AUDIO:
sinkpad_name = "audio_sink";
break;
case GES_TRACK_TYPE_TEXT:
sinkpad_name = "text_sink";
break;
default:
GST_WARNING_OBJECT (self, "Can't handle tracks of type %d yet",
track->type);
goto error;
}
/* Request a sinkpad from playsink */
if (G_UNLIKELY (!(sinkpad =
gst_element_get_request_pad (self->priv->playsink,
sinkpad_name)))) {
GST_ERROR_OBJECT (self, "Couldn't get a pad from the playsink !");
goto error;
}
tmppad = gst_element_get_request_pad (chain->tee, "src_%u");
if (G_UNLIKELY (gst_pad_link_full (tmppad, sinkpad,
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK)) {
GST_ERROR_OBJECT (self, "Couldn't link track pad to playsink");
gst_object_unref (tmppad);
goto error;
}
chain->blocked_pad = tmppad;
GST_DEBUG_OBJECT (tmppad, "blocking pad");
chain->probe_id = gst_pad_add_probe (tmppad,
GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM, pad_blocked, NULL, NULL);
GST_DEBUG ("Reconfiguring playsink");
/* reconfigure playsink */
g_signal_emit_by_name (self->priv->playsink, "reconfigure", &reconfigured);
GST_DEBUG ("'reconfigure' returned %d", reconfigured);
/* We still hold a reference on the sinkpad */
chain->playsinkpad = sinkpad;
}
/* Connect to encodebin */
if (self->priv->mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER)) {
GstPad *tmppad;
GST_DEBUG_OBJECT (self, "Connecting to encodebin");
if (!chain->encodebinpad) {
/* Check for unused static pads */
sinkpad = get_compatible_unlinked_pad (self->priv->encodebin, pad);
if (sinkpad == NULL) {
GstCaps *caps = gst_pad_query_caps (pad, NULL);
/* If no compatible static pad is available, request a pad */
g_signal_emit_by_name (self->priv->encodebin, "request-pad", caps,
&sinkpad);
gst_caps_unref (caps);
if (G_UNLIKELY (sinkpad == NULL)) {
GST_ERROR_OBJECT (self, "Couldn't get a pad from encodebin !");
goto error;
}
}
chain->encodebinpad = sinkpad;
}
tmppad = gst_element_get_request_pad (chain->tee, "src_%u");
if (G_UNLIKELY (gst_pad_link_full (tmppad,
chain->encodebinpad,
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK)) {
GST_WARNING_OBJECT (self, "Couldn't link track pad to playsink");
goto error;
}
gst_object_unref (tmppad);
}
/* If chain wasn't already present, insert it in list */
if (!get_output_chain_for_track (self, track))
self->priv->chains = g_list_append (self->priv->chains, chain);
UNLOCK_DYN (self);
GST_DEBUG ("done");
return;
error:
{
if (chain->tee) {
gst_bin_remove (GST_BIN_CAST (self), chain->tee);
}
if (sinkpad)
gst_object_unref (sinkpad);
g_free (chain);
UNLOCK_DYN (self);
}
}
static void
pad_removed_cb (GstElement * timeline, GstPad * pad, GESTimelinePipeline * self)
{
OutputChain *chain;
GESTrack *track;
GstPad *peer;
LOCK_DYN (self);
GST_DEBUG_OBJECT (self, "pad removed %s:%s", GST_DEBUG_PAD_NAME (pad));
if (G_UNLIKELY (!(track =
ges_timeline_get_track_for_pad (self->priv->timeline, pad)))) {
GST_WARNING_OBJECT (self, "Couldn't find coresponding track !");
UNLOCK_DYN (self);
return;
}
if (G_UNLIKELY (!(chain = get_output_chain_for_track (self, track)))) {
GST_DEBUG_OBJECT (self, "Pad wasn't used");
UNLOCK_DYN (self);
return;
}
/* Unlink encodebin */
if (chain->encodebinpad) {
peer = gst_pad_get_peer (chain->encodebinpad);
gst_pad_unlink (peer, chain->encodebinpad);
gst_object_unref (peer);
gst_element_release_request_pad (self->priv->encodebin,
chain->encodebinpad);
}
/* Unlink playsink */
if (chain->playsinkpad) {
peer = gst_pad_get_peer (chain->playsinkpad);
gst_pad_unlink (peer, chain->playsinkpad);
gst_object_unref (peer);
gst_element_release_request_pad (self->priv->playsink, chain->playsinkpad);
gst_object_unref (chain->playsinkpad);
}
if (chain->blocked_pad) {
GST_DEBUG_OBJECT (chain->blocked_pad, "unblocking pad");
gst_pad_remove_probe (chain->blocked_pad, chain->probe_id);
gst_object_unref (chain->blocked_pad);
chain->blocked_pad = NULL;
chain->probe_id = 0;
}
/* Unlike/remove tee */
peer = gst_element_get_static_pad (chain->tee, "sink");
gst_pad_unlink (pad, peer);
gst_object_unref (peer);
gst_element_set_state (chain->tee, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), chain->tee);
self->priv->chains = g_list_remove (self->priv->chains, chain);
g_free (chain);
UNLOCK_DYN (self);
GST_DEBUG ("done");
}
static void
no_more_pads_cb (GstElement * timeline, GESTimelinePipeline * self)
{
GList *tmp;
GST_DEBUG ("received no-more-pads");
LOCK_DYN (self);
for (tmp = self->priv->chains; tmp; tmp = g_list_next (tmp)) {
OutputChain *chain = (OutputChain *) tmp->data;
if (chain->blocked_pad) {
GST_DEBUG_OBJECT (chain->blocked_pad, "unblocking pad");
gst_pad_remove_probe (chain->blocked_pad, chain->probe_id);
gst_object_unref (chain->blocked_pad);
chain->blocked_pad = NULL;
chain->probe_id = 0;
}
}
UNLOCK_DYN (self);
}
/**
* ges_timeline_pipeline_add_timeline:
* @pipeline: a #GESTimelinePipeline
* @timeline: the #GESTimeline to set on the @pipeline.
*
* Sets the timeline to use in this pipeline.
*
* The reference to the @timeline will be stolen by the @pipeline.
*
* Returns: TRUE if the @timeline could be successfully set on the @pipeline,
* else FALSE.
*/
gboolean
ges_timeline_pipeline_add_timeline (GESTimelinePipeline * pipeline,
GESTimeline * timeline)
{
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (pipeline), FALSE);
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
g_return_val_if_fail (pipeline->priv->timeline == NULL, FALSE);
GST_DEBUG ("pipeline:%p, timeline:%p", timeline, pipeline);
if (G_UNLIKELY (!gst_bin_add (GST_BIN_CAST (pipeline),
GST_ELEMENT (timeline)))) {
return FALSE;
}
pipeline->priv->timeline = timeline;
/* Connect to pipeline */
g_signal_connect (timeline, "pad-added", (GCallback) pad_added_cb, pipeline);
g_signal_connect (timeline, "pad-removed", (GCallback) pad_removed_cb,
pipeline);
g_signal_connect (timeline, "no-more-pads", (GCallback) no_more_pads_cb,
pipeline);
/* FIXME Check if we should rollback if we can't sync state */
gst_element_sync_state_with_parent (GST_ELEMENT (timeline));
return TRUE;
}
/**
* ges_timeline_pipeline_set_render_settings:
* @pipeline: a #GESTimelinePipeline
* @output_uri: the URI to which the timeline will be rendered
* @profile: the #GstEncodingProfile to use to render the timeline.
*
* Specify where the pipeline shall be rendered and with what settings.
*
* A copy of @profile and @output_uri will be done internally, the caller can
* safely free those values afterwards.
*
* This method must be called before setting the pipeline mode to
* #TIMELINE_MODE_RENDER
*
* Returns: %TRUE if the settings were aknowledged properly, else %FALSE
*/
gboolean
ges_timeline_pipeline_set_render_settings (GESTimelinePipeline * pipeline,
const gchar * output_uri, GstEncodingProfile * profile)
{
GError *err = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (pipeline), FALSE);
/* Clear previous URI sink if it existed */
/* FIXME : We should figure out if it was added to the pipeline,
* and if so, remove it. */
if (pipeline->priv->urisink) {
gst_object_unref (pipeline->priv->urisink);
pipeline->priv->urisink = NULL;
}
pipeline->priv->urisink =
gst_element_make_from_uri (GST_URI_SINK, output_uri, "urisink", &err);
if (G_UNLIKELY (pipeline->priv->urisink == NULL)) {
GST_ERROR_OBJECT (pipeline, "Couldn't not create sink for URI %s: '%s'",
output_uri, ((err
&& err->message) ? err->message : "failed to create element"));
g_clear_error (&err);
return FALSE;
}
if (pipeline->priv->profile)
gst_encoding_profile_unref (pipeline->priv->profile);
g_object_set (pipeline->priv->encodebin, "avoid-reencoding",
!(!(pipeline->priv->mode & TIMELINE_MODE_SMART_RENDER)), NULL);
g_object_set (pipeline->priv->encodebin, "profile", profile, NULL);
pipeline->priv->profile =
(GstEncodingProfile *) gst_encoding_profile_ref (profile);
return TRUE;
}
/**
* ges_timeline_pipeline_set_mode:
* @pipeline: a #GESTimelinePipeline
* @mode: the #GESPipelineFlags to use
*
* switches the @pipeline to the specified @mode. The default mode when
* creating a #GESTimelinePipeline is #TIMELINE_MODE_PREVIEW.
*
* Note: The @pipeline will be set to #GST_STATE_NULL during this call due to
* the internal changes that happen. The caller will therefore have to
* set the @pipeline to the requested state after calling this method.
*
* Returns: %TRUE if the mode was properly set, else %FALSE.
**/
gboolean
ges_timeline_pipeline_set_mode (GESTimelinePipeline * pipeline,
GESPipelineFlags mode)
{
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (pipeline), FALSE);
GST_DEBUG_OBJECT (pipeline, "current mode : %d, mode : %d",
pipeline->priv->mode, mode);
/* fast-path, nothing to change */
if (mode == pipeline->priv->mode)
return TRUE;
/* FIXME: It would be nice if we are only (de)activating preview
* modes to not set the whole pipeline to NULL, but instead just
* do the proper (un)linking to playsink. */
/* Switch pipeline to NULL since we're changing the configuration */
gst_element_set_state (GST_ELEMENT_CAST (pipeline), GST_STATE_NULL);
/* remove no-longer needed components */
if (pipeline->priv->mode & TIMELINE_MODE_PREVIEW &&
!(mode & TIMELINE_MODE_PREVIEW)) {
/* Disable playsink */
GST_DEBUG ("Disabling playsink");
gst_object_ref (pipeline->priv->playsink);
gst_bin_remove (GST_BIN_CAST (pipeline), pipeline->priv->playsink);
}
if ((pipeline->priv->mode &
(TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER)) &&
!(mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))) {
GList *tmp;
GstCaps *caps;
for (tmp = pipeline->priv->timeline->tracks; tmp; tmp = tmp->next) {
GESTrackType type = GES_TRACK (tmp->data)->type;
if (type == GES_TRACK_TYPE_AUDIO)
caps = gst_caps_new_empty_simple ("audio/x-raw");
else if (type == GES_TRACK_TYPE_VIDEO)
caps = gst_caps_new_empty_simple ("video/x-raw");
else
continue;
ges_track_set_caps (GES_TRACK (tmp->data), caps);
gst_caps_unref (caps);
}
/* Disable render bin */
GST_DEBUG ("Disabling rendering bin");
gst_object_ref (pipeline->priv->encodebin);
gst_object_ref (pipeline->priv->urisink);
gst_bin_remove_many (GST_BIN_CAST (pipeline),
pipeline->priv->encodebin, pipeline->priv->urisink, NULL);
}
/* Add new elements */
if (!(pipeline->priv->mode & TIMELINE_MODE_PREVIEW) &&
(mode & TIMELINE_MODE_PREVIEW)) {
/* Add playsink */
GST_DEBUG ("Adding playsink");
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->priv->playsink)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add playsink");
return FALSE;
}
}
if (!(pipeline->priv->mode &
(TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER)) &&
(mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))) {
/* Adding render bin */
GST_DEBUG ("Adding render bin");
if (G_UNLIKELY (pipeline->priv->urisink == NULL)) {
GST_ERROR_OBJECT (pipeline, "Output URI not set !");
return FALSE;
}
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->priv->encodebin)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add encodebin");
return FALSE;
}
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->priv->urisink)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add URI sink");
return FALSE;
}
g_object_set (pipeline->priv->encodebin, "avoid-reencoding",
!(!(mode & TIMELINE_MODE_SMART_RENDER)), NULL);
gst_element_link_pads_full (pipeline->priv->encodebin, "src",
pipeline->priv->urisink, "sink", GST_PAD_LINK_CHECK_NOTHING);
}
/* FIXUPS */
/* FIXME
* If we are rendering, set playsink to sync=False,
* If we are NOT rendering, set playsink to sync=TRUE */
pipeline->priv->mode = mode;
return TRUE;
}
/**
* ges_timeline_pipeline_get_thumbnail:
* @self: a #GESTimelinePipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED
* @caps: (transfer none): caps specifying current format. Use %GST_CAPS_ANY
* for native size.
*
* Returns a #GstSample with the currently playing image in the format specified by
* caps. The caller should free the sample with #gst_sample_unref when finished. If ANY
* caps are specified, the information will be returned in the whatever format
* is currently used by the sink. This information can be retrieve from caps
* associated with the buffer.
*
* Returns: (transfer full): a #GstSample or %NULL
*/
GstSample *
ges_timeline_pipeline_get_thumbnail (GESTimelinePipeline * self, GstCaps * caps)
{
GstElement *sink;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (self), FALSE);
sink = self->priv->playsink;
if (!sink) {
GST_WARNING ("thumbnailing can only be done if we have a playsink");
return NULL;
}
return ges_play_sink_convert_frame (sink, caps);
}
/**
* ges_timeline_pipeline_save_thumbnail:
* @self: a #GESTimelinePipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED
* @width: the requested width or -1 for native size
* @height: the requested height or -1 for native size
* @format: a string specifying the desired mime type (for example,
* image/jpeg)
* @location: the path to save the thumbnail
* @error: (out) (allow-none) (transfer full): An error to be set in case
* something wrong happens or %NULL
*
* Saves the current frame to the specified @location.
*
* Returns: %TRUE if the thumbnail was properly save, else %FALSE.
*/
gboolean
ges_timeline_pipeline_save_thumbnail (GESTimelinePipeline * self, int width, int
height, const gchar * format, const gchar * location, GError ** error)
{
GstMapInfo map_info;
GstBuffer *b;
GstSample *sample;
GstCaps *caps;
gboolean res = TRUE;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (self), FALSE);
caps = gst_caps_from_string (format);
if (width > 1)
gst_caps_set_simple (caps, "width", G_TYPE_INT, width, NULL);
if (height > 1)
gst_caps_set_simple (caps, "height", G_TYPE_INT, height, NULL);
if (!(sample = ges_timeline_pipeline_get_thumbnail (self, caps))) {
gst_caps_unref (caps);
return FALSE;
}
b = gst_sample_get_buffer (sample);
if (gst_buffer_map (b, &map_info, GST_MAP_READ)) {
if (!g_file_set_contents (location, (const char *) map_info.data,
map_info.size, error)) {
GST_WARNING ("Could not save thumbnail: %s",
error ? (*error)->message : "");
res = FALSE;
}
}
gst_caps_unref (caps);
gst_buffer_unmap (b, &map_info);
gst_buffer_unref (b);
gst_sample_unref (sample);
return res;
}
/**
* ges_timeline_pipeline_get_thumbnail_rgb24:
* @self: a #GESTimelinePipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED
* @width: the requested width or -1 for native size
* @height: the requested height or -1 for native size
*
* A convenience method for @ges_timeline_pipeline_get_thumbnail which
* returns a buffer in 24-bit RGB, optionally scaled to the specified width
* and height. If -1 is specified for either dimension, it will be left at
* native size. You can retreive this information from the caps associated
* with the buffer.
*
* The caller is responsible for unreffing the returned sample with
* #gst_sample_unref.
*
* Returns: (transfer full): a #GstSample or %NULL
*/
GstSample *
ges_timeline_pipeline_get_thumbnail_rgb24 (GESTimelinePipeline * self,
gint width, gint height)
{
GstSample *ret;
GstCaps *caps;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (self), FALSE);
caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,
"RGB", NULL);
if (width != -1)
gst_caps_set_simple (caps, "width", G_TYPE_INT, (gint) width, NULL);
if (height != -1)
gst_caps_set_simple (caps, "height", G_TYPE_INT, (gint) height, NULL);
ret = ges_timeline_pipeline_get_thumbnail (self, caps);
gst_caps_unref (caps);
return ret;
}
/**
* ges_timeline_pipeline_preview_get_video_sink:
* @self: a #GESTimelinePipeline
*
* Obtains a pointer to playsink's video sink element that is used for
* displaying video when the #GESTimelinePipeline is in %TIMELINE_MODE_PREVIEW
*
* The caller is responsible for unreffing the returned element with
* #gst_object_unref.
*
* Returns: (transfer full): a pointer to the playsink video sink #GstElement
*/
GstElement *
ges_timeline_pipeline_preview_get_video_sink (GESTimelinePipeline * self)
{
GstElement *sink = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (self), FALSE);
g_object_get (self->priv->playsink, "video-sink", &sink, NULL);
return sink;
};
/**
* ges_timeline_pipeline_preview_set_video_sink:
* @self: a #GESTimelinePipeline in %GST_STATE_NULL
* @sink: (transfer none): a video sink #GstElement
*
* Sets playsink's video sink element that is used for displaying video when
* the #GESTimelinePipeline is in %TIMELINE_MODE_PREVIEW
*/
void
ges_timeline_pipeline_preview_set_video_sink (GESTimelinePipeline * self,
GstElement * sink)
{
g_return_if_fail (GES_IS_TIMELINE_PIPELINE (self));
g_object_set (self->priv->playsink, "video-sink", sink, NULL);
};
/**
* ges_timeline_pipeline_preview_get_audio_sink:
* @self: a #GESTimelinePipeline
*
* Obtains a pointer to playsink's audio sink element that is used for
* displaying audio when the #GESTimelinePipeline is in %TIMELINE_MODE_PREVIEW
*
* The caller is responsible for unreffing the returned element with
* #gst_object_unref.
*
* Returns: (transfer full): a pointer to the playsink audio sink #GstElement
*/
GstElement *
ges_timeline_pipeline_preview_get_audio_sink (GESTimelinePipeline * self)
{
GstElement *sink = NULL;
g_return_val_if_fail (GES_IS_TIMELINE_PIPELINE (self), FALSE);
g_object_get (self->priv->playsink, "audio-sink", &sink, NULL);
return sink;
};
/**
* ges_timeline_pipeline_preview_set_audio_sink:
* @self: a #GESTimelinePipeline in %GST_STATE_NULL
* @sink: (transfer none): a audio sink #GstElement
*
* Sets playsink's audio sink element that is used for displaying audio when
* the #GESTimelinePipeline is in %TIMELINE_MODE_PREVIEW
*/
void
ges_timeline_pipeline_preview_set_audio_sink (GESTimelinePipeline * self,
GstElement * sink)
{
g_return_if_fail (GES_IS_TIMELINE_PIPELINE (self));
g_object_set (self->priv->playsink, "audio-sink", sink, NULL);
};
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