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gstreamer/ges/ges-timeline-pipeline.c
Edward Hervey ab0493418a GESTimelinePipeline: Make sure playsink events are sent to all incoming streams 
PlaySink will not send seek events to all incoming streams since it assumes that
they all come from the same source (like a file).
When used with multiple gnonlin compositions we need to make sure those seek events
are sent to all of them.
2010-11-23 18:24:38 +01:00

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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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 <stdio.h>
#include "ges-internal.h"
#include "ges-timeline-pipeline.h"
#include "ges-screenshot.h"
#define DEFAULT_TIMELINE_MODE TIMELINE_MODE_PREVIEW
/* Structure corresponding to a timeline - sink link */
typedef struct
{
GESTrack *track;
GstElement *tee;
GstPad *srcpad; /* Timeline source pad */
GstPad *playsinkpad;
GstPad *encodebinpad;
} OutputChain;
G_DEFINE_TYPE (GESTimelinePipeline, ges_timeline_pipeline, GST_TYPE_PIPELINE);
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);
static gboolean play_sink_multiple_seeks_send_event (GstElement * element,
GstEvent * event);
static void
ges_timeline_pipeline_dispose (GObject * object)
{
GESTimelinePipeline *self = GES_TIMELINE_PIPELINE (object);
if (self->playsink) {
if (self->mode & (TIMELINE_MODE_PREVIEW))
gst_bin_remove (GST_BIN (object), self->playsink);
else
gst_object_unref (self->playsink);
self->playsink = NULL;
}
if (self->encodebin) {
if (self->mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))
gst_bin_remove (GST_BIN (object), self->encodebin);
else
gst_object_unref (self->encodebin);
self->encodebin = NULL;
}
if (self->profile) {
gst_encoding_profile_free (self->profile);
self->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);
object_class->dispose = ges_timeline_pipeline_dispose;
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)
{
GstElementClass *playsinkclass;
GST_INFO_OBJECT (self, "Creating new 'playsink'");
self->playsink = gst_element_factory_make ("playsink", "internal-sinks");
self->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->encodebin, "queue-buffers-max", (guint32) 1,
"queue-bytes-max", (guint32) 0, "queue-time-max", (guint64) 0,
"use-smartencoder", TRUE, NULL);
if (G_UNLIKELY (self->playsink == NULL)) {
GST_ERROR_OBJECT (self, "Can't create playsink instance !");
return;
}
if (G_UNLIKELY (self->encodebin == NULL)) {
GST_ERROR_OBJECT (self, "Can't create encodebin instance !");
return;
}
/* HACK : Intercept events going through playsink */
playsinkclass = GST_ELEMENT_GET_CLASS (self->playsink);
/* Replace playsink's GstBin::send_event with our own */
playsinkclass->send_event = play_sink_multiple_seeks_send_event;
ges_timeline_pipeline_set_mode (self, DEFAULT_TIMELINE_MODE);
}
/**
* 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, proftype) \
(((proftype) == GST_ENCODING_PROFILE_AUDIO && (tracktype) == GES_TRACK_TYPE_AUDIO) || \
((proftype) == GST_ENCODING_PROFILE_VIDEO && (tracktype) == GES_TRACK_TYPE_VIDEO) || \
((proftype) == GST_ENCODING_PROFILE_TEXT && (tracktype) == GES_TRACK_TYPE_TEXT))
static gboolean
ges_timeline_pipeline_update_caps (GESTimelinePipeline * self)
{
GList *ltrack, *tracks, *lstream;
if (!self->profile)
return TRUE;
GST_DEBUG ("Updating track caps");
tracks = ges_timeline_get_tracks (self->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;
/* Find a matching stream setting */
for (lstream = self->profile->encodingprofiles; lstream;
lstream = lstream->next) {
GstStreamEncodingProfile *prof =
(GstStreamEncodingProfile *) lstream->data;
if (TRACK_COMPATIBLE_PROFILE (track->type, prof->type)) {
if (self->mode == TIMELINE_MODE_SMART_RENDER) {
GstCaps *ocaps, *rcaps;
GST_DEBUG ("Smart Render mode, setting output caps");
ocaps = gst_stream_encoding_profile_get_output_caps (prof);
if (track->type == GES_TRACK_TYPE_AUDIO)
rcaps = gst_caps_from_string ("audio/x-raw-int;audio/x-raw-float");
else
rcaps = gst_caps_from_string ("video/x-raw-yuv;video/x-raw-rgb");
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_from_string ("video/x-raw-yuv;video/x-raw-rgb");
else if (track->type == GES_TRACK_TYPE_AUDIO)
gst_caps_from_string ("audio/x-raw-int;audio/x-raw-float");
if (caps) {
ges_track_set_caps (track, caps);
gst_caps_unref (caps);
}
}
break;
}
}
g_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->timeline == NULL)) {
GST_ERROR_OBJECT (element,
"No GESTimeline set on the pipeline, cannot play !");
ret = GST_STATE_CHANGE_FAILURE;
goto done;
}
if (self->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 */
/* FIXME : Add a new SMART_RENDER mode to avoid decoding */
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;
}
static OutputChain *
get_output_chain_for_track (GESTimelinePipeline * self, GESTrack * track)
{
GList *tmp;
for (tmp = self->chains; tmp; tmp = tmp->next) {
OutputChain *chain = (OutputChain *) tmp->data;
if (chain->track == track)
return chain;
}
return NULL;
}
/* Fetches a ocmpatible 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;
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_get_caps_reffed (pad);
GST_DEBUG ("srccaps %" GST_PTR_FORMAT, srccaps);
while (!done) {
gpointer padptr;
switch (gst_iterator_next (pads, &padptr)) {
case GST_ITERATOR_OK:
{
GstPad *testpad = (GstPad *) padptr;
if (gst_pad_is_linked (testpad)) {
gst_object_unref (testpad);
} else {
GstCaps *sinkcaps = gst_pad_get_caps_reffed (testpad);
GST_DEBUG ("sinkccaps %" GST_PTR_FORMAT, sinkcaps);
if (gst_caps_can_intersect (srccaps, sinkcaps)) {
res = testpad;
done = TRUE;
} else
gst_object_unref (testpad);
gst_caps_unref (sinkcaps);
}
}
break;
case GST_ITERATOR_DONE:
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pads);
break;
}
}
gst_iterator_free (pads);
gst_caps_unref (srccaps);
return res;
}
static void
pad_added_cb (GstElement * timeline, GstPad * pad, GESTimelinePipeline * self)
{
OutputChain *chain;
GESTrack *track;
GstPad *sinkpad;
gboolean reconfigured = FALSE;
GST_DEBUG_OBJECT (self, "new pad %s:%s , caps:%" GST_PTR_FORMAT,
GST_DEBUG_PAD_NAME (pad), GST_PAD_CAPS (pad));
if (G_UNLIKELY (!(track =
ges_timeline_get_track_for_pad (self->timeline, pad)))) {
GST_WARNING_OBJECT (self, "Couldn't find coresponding track !");
return;
}
/* Don't connect track if it's not going to be used */
if (track->type == GES_TRACK_TYPE_VIDEO &&
!(self->mode & TIMELINE_MODE_PREVIEW_VIDEO) &&
!(self->mode & TIMELINE_MODE_RENDER) &&
!(self->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->mode & TIMELINE_MODE_PREVIEW_AUDIO) &&
!(self->mode & TIMELINE_MODE_RENDER) &&
!(self->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->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->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%d");
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;
}
gst_object_unref (tmppad);
GST_DEBUG ("Reconfiguring playsink");
/* reconfigure playsink */
g_signal_emit_by_name (self->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->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->encodebin, pad);
if (sinkpad == NULL) {
GstCaps *caps = gst_pad_get_caps_reffed (pad);
/* If no compatible static pad is available, request a pad */
g_signal_emit_by_name (self->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%d");
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->chains = g_list_append (self->chains, chain);
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);
}
}
static void
pad_removed_cb (GstElement * timeline, GstPad * pad, GESTimelinePipeline * self)
{
OutputChain *chain;
GESTrack *track;
GstPad *peer;
GST_DEBUG_OBJECT (self, "pad removed %s:%s", GST_DEBUG_PAD_NAME (pad));
if (G_UNLIKELY (!(track =
ges_timeline_get_track_for_pad (self->timeline, pad)))) {
GST_WARNING_OBJECT (self, "Couldn't find coresponding track !");
return;
}
if (G_UNLIKELY (!(chain = get_output_chain_for_track (self, track)))) {
GST_DEBUG_OBJECT (self, "Pad wasn't used");
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->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->playsink, chain->playsinkpad);
gst_object_unref (chain->playsinkpad);
}
/* 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->chains = g_list_remove (self->chains, chain);
g_free (chain);
GST_DEBUG ("done");
}
/**
* 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 (pipeline->timeline == NULL, FALSE);
g_return_val_if_fail (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->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);
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,
gchar * output_uri, GstEncodingProfile * profile)
{
/* 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->urisink) {
g_object_unref (pipeline->urisink);
pipeline->urisink = NULL;
}
pipeline->urisink =
gst_element_make_from_uri (GST_URI_SINK, output_uri, "urisink");
if (G_UNLIKELY (pipeline->urisink == NULL)) {
GST_ERROR_OBJECT (pipeline, "Couldn't not create sink for URI %s",
output_uri);
return FALSE;
}
if (pipeline->profile)
gst_encoding_profile_free (pipeline->profile);
g_object_set (pipeline->encodebin, "use-smartencoder",
!(!(pipeline->mode & TIMELINE_MODE_SMART_RENDER)), NULL);
g_object_set (pipeline->encodebin, "profile", profile, NULL);
pipeline->profile = gst_encoding_profile_copy (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)
{
GST_DEBUG_OBJECT (pipeline, "current mode : %d, mode : %d", pipeline->mode,
mode);
/* fast-path, nothing to change */
if (mode == pipeline->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->mode & TIMELINE_MODE_PREVIEW && !(mode & TIMELINE_MODE_PREVIEW)) {
/* Disable playsink */
GST_DEBUG ("Disabling playsink");
g_object_ref (pipeline->playsink);
gst_bin_remove (GST_BIN_CAST (pipeline), pipeline->playsink);
}
if ((pipeline->mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER)) &&
!(mode & (TIMELINE_MODE_RENDER | TIMELINE_MODE_SMART_RENDER))) {
/* Disable render bin */
GST_DEBUG ("Disabling rendering bin");
g_object_ref (pipeline->encodebin);
g_object_ref (pipeline->urisink);
gst_bin_remove_many (GST_BIN_CAST (pipeline),
pipeline->encodebin, pipeline->urisink, NULL);
}
/* Add new elements */
if (!(pipeline->mode & TIMELINE_MODE_PREVIEW) &&
(mode & TIMELINE_MODE_PREVIEW)) {
/* Add playsink */
GST_DEBUG ("Adding playsink");
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->playsink)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add playsink");
return FALSE;
}
}
if (!(pipeline->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->urisink == NULL)) {
GST_ERROR_OBJECT (pipeline, "Output URI not set !");
return FALSE;
}
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->encodebin)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add encodebin");
return FALSE;
}
if (!gst_bin_add (GST_BIN_CAST (pipeline), pipeline->urisink)) {
GST_ERROR_OBJECT (pipeline, "Couldn't add URI sink");
return FALSE;
}
g_object_set (pipeline->encodebin, "use-smartencoder",
!(!(mode & TIMELINE_MODE_SMART_RENDER)), NULL);
gst_element_link_pads_full (pipeline->encodebin, "src", pipeline->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->mode = mode;
return TRUE;
}
/**
* ges_timeline_pipeline_get_thumbnail
* @self: a #GESTimelinePipeline in %GST_STATE_PLAYING or %GST_STATE_PAUSED
* @caps: caps specifying current format. Use %GST_CAPS_ANY for native size.
*
* Returns a #GstBuffer with the currently playing in the format specified by
* caps. The caller should unref the #gst_buffer_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: a #GstBuffer or %NULL
*/
GstBuffer *
ges_timeline_pipeline_get_thumbnail_buffer (GESTimelinePipeline * self,
GstCaps * caps)
{
GstElement *sink;
GstBuffer *buf;
sink = self->playsink;
if (!sink) {
GST_WARNING ("thumbnailing can only be done if we have a playsink");
return NULL;
}
buf = ges_play_sink_convert_frame (sink, caps);
return buf;
}
/**
* 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
*
* A convenience method for ges_timeline_pipeline_get_thumbnail_raw 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 buffer with
* #gst_buffer_unref.
*
* Returns: a #GstBuffer or %NULL
*/
gboolean
ges_timeline_pipeline_save_thumbnail (GESTimelinePipeline * self, int width, int
height, gchar * format, gchar * location)
{
GstBuffer *b;
FILE *fp;
GstCaps *caps;
gboolean res = TRUE;
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 (!(b = ges_timeline_pipeline_get_thumbnail_buffer (self, caps))) {
gst_caps_unref (caps);
return res;
}
fp = fopen (location, "w+");
if (!fwrite (GST_BUFFER_DATA (b), GST_BUFFER_SIZE (b), 1, fp) || ferror (fp)) {
res = FALSE;
}
fclose (fp);
gst_caps_unref (caps);
gst_buffer_unref (b);
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_raw 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 buffer with
* #gst_buffer_unref.
*
* Returns: a #GstBuffer or %NULL
*/
GstBuffer *
ges_timeline_pipeline_get_thumbnail_rgb24 (GESTimelinePipeline * self,
gint width, gint height)
{
GstBuffer *ret;
GstCaps *caps;
caps = gst_caps_from_string ("video/x-raw-rgb,bpp=(int)24," "depth=(int)24");
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_buffer (self, caps);
gst_caps_unref (caps);
return ret;
}
static gboolean
play_sink_multiple_seeks_send_event (GstElement * element, GstEvent * event)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GST_DEBUG ("%s", GST_EVENT_TYPE_NAME (event));
return
GST_ELEMENT_CLASS (g_type_class_peek_parent (klass))->send_event (element,
event);
}
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