G_MODULE_EXPORT gboolean
preview_draw_cb(
GtkWidget *widget,
cairo_t *cr,
signal_user_data_t *ud)
{
#if defined(_ENABLE_GST)
#if GST_CHECK_VERSION(1, 0, 0)
if (ud->preview->live_enabled && ud->preview->state == PREVIEW_STATE_LIVE)
{
if (GST_STATE(ud->preview->play) >= GST_STATE_PAUSED)
{
GstElement *vsink;
GstVideoOverlay *vover;
g_object_get(ud->preview->play, "video-sink", &vsink, NULL);
if (GST_IS_BIN(vsink))
vover = GST_VIDEO_OVERLAY(gst_bin_get_by_interface(
GST_BIN(vsink), GST_TYPE_VIDEO_OVERLAY));
else
vover = GST_VIDEO_OVERLAY(vsink);
gst_video_overlay_expose(vover);
// For some reason, the exposed region doesn't always get
// cleaned up here. But a delayed gst_x_overlay_expose()
// takes care of it.
g_idle_add((GSourceFunc)delayed_expose_cb, ud);
}
return FALSE;
}
#else
if (ud->preview->live_enabled && ud->preview->state == PREVIEW_STATE_LIVE)
{
if (GST_STATE(ud->preview->play) >= GST_STATE_PAUSED)
{
GstElement *vsink;
GstXOverlay *xover;
g_object_get(ud->preview->play, "video-sink", &vsink, NULL);
if (GST_IS_BIN(vsink))
xover = GST_X_OVERLAY(gst_bin_get_by_interface(
GST_BIN(vsink), GST_TYPE_X_OVERLAY));
else
xover = GST_X_OVERLAY(vsink);
gst_x_overlay_expose(xover);
// For some reason, the exposed region doesn't always get
// cleaned up here. But a delayed gst_x_overlay_expose()
// takes care of it.
g_idle_add((GSourceFunc)delayed_expose_cb, ud);
}
return FALSE;
}
#endif
#endif
if (ud->preview->pix != NULL)
{
_draw_pixbuf(cr, ud->preview->pix);
}
return FALSE;
}
void
BasePlatformInterface::PrepareVideoWindow(GstMessage *aMessage)
{
GstElement *element = NULL;
GstXOverlay *xoverlay = NULL;
if (GST_IS_BIN (mVideoSink)) {
/* Get the actual implementing object from the bin */
element = gst_bin_get_by_interface(GST_BIN (mVideoSink),
GST_TYPE_X_OVERLAY);
}
else {
element = mVideoSink;
}
if (GST_IS_X_OVERLAY (element)) {
xoverlay = GST_X_OVERLAY (element);
LOG(("xoverlay interface found, setting video window"));
}
else {
LOG(("No xoverlay interface found, cannot set video window"));
return;
}
SetXOverlayWindowID(xoverlay);
ResizeToWindow();
}
static gboolean
gst_wrapper_camera_bin_src_set_mode (GstBaseCameraSrc * bcamsrc,
GstCameraBinMode mode)
{
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
GstWrapperCameraBinSrc *self = GST_WRAPPER_CAMERA_BIN_SRC (bcamsrc);
if (self->output_selector) {
if (mode == MODE_IMAGE) {
self->image_renegotiate = TRUE;
g_object_set (self->output_selector, "active-pad", self->outsel_imgpad,
NULL);
} else {
self->video_renegotiate = TRUE;
g_object_set (self->output_selector, "active-pad", self->outsel_vidpad,
NULL);
}
}
self->mode = mode;
if (photography) {
if (g_object_class_find_property (G_OBJECT_GET_CLASS (photography),
"capture-mode")) {
g_object_set (G_OBJECT (photography), "capture-mode", mode, NULL);
}
} else {
GstCaps *anycaps = gst_caps_new_any ();
gst_wrapper_camera_bin_reset_video_src_caps (self, anycaps);
gst_caps_unref (anycaps);
}
return TRUE;
}
/*
* Method: get_child(index)
* Method: get_child(name, recurse=false)
* Method: get_child(interface)
* index: an index.
* name: a name.
* recurse: search recursively.
* interface: an interface (Ruby class).
*
* 1st: Gets the index-th element.
*
* 2nd: Gets the element with the given name from the
* bin, as a reference to a Gst::Element object. If the
* element is not found and recurse is true, a recursion is
* performed on the parent bin.
*
* 3nd: Looks for the first element inside the bin that implements the
* given interface. If such an element is found, it returns the element.
* If you want all elements that implement the interface, use
* Gst::Bin#get_all_by_interface. The method recurses bins inside bins.
*
* Returns: a Gst::Element reference, or nil if the bin does not contain
* an element with the given name nor implementing the interface.
*/
static VALUE
rb_gst_bin_get(int argc, VALUE *argv, VALUE self)
{
VALUE index_or_name_or_interface, recurse;
GstElement *element = NULL;
rb_scan_args(argc, argv, "11", &index_or_name_or_interface, &recurse);
if (RVAL2CBOOL(rb_obj_is_kind_of(index_or_name_or_interface, rb_cInteger))) {
int index;
GList *node;
index = NUM2INT(index_or_name_or_interface);
node = g_list_nth(GST_BIN_CHILDREN(SELF(self)), index);
if (node)
element = node->data;
} else if (RVAL2CBOOL(rb_obj_is_kind_of(index_or_name_or_interface,
rb_cString))) {
char *name;
name = RVAL2CSTR(index_or_name_or_interface);
if (RVAL2CBOOL(recurse)) {
element = gst_bin_get_by_name_recurse_up(SELF(self), name);
} else {
element = gst_bin_get_by_name(SELF(self), name);
}
} else {
GType iface;
iface = CLASS2GTYPE(index_or_name_or_interface);
element = gst_bin_get_by_interface(SELF(self), iface);
}
return GST_ELEMENT2RVAL(element);
}
/* Main method for the native code. This is executed on its own thread. */
static void *app_function (void *userdata) {
JavaVMAttachArgs args;
GstBus *bus;
CustomData *data = (CustomData *)userdata;
GSource *bus_source;
GError *error = NULL;
GST_DEBUG ("Creating pipeline in CustomData at %p", data);
/* Create our own GLib Main Context and make it the default one */
data->context = g_main_context_new ();
g_main_context_push_thread_default(data->context);
/* Build pipeline */
data->pipeline = gst_parse_launch("videotestsrc ! warptv ! videoconvert ! autovideosink", &error);
if (error) {
gchar *message = g_strdup_printf("Unable to build pipeline: %s", error->message);
g_clear_error (&error);
set_ui_message(message, data);
g_free (message);
return NULL;
}
/* Set the pipeline to READY, so it can already accept a window handle, if we have one */
gst_element_set_state(data->pipeline, GST_STATE_READY);
data->video_sink = gst_bin_get_by_interface(GST_BIN(data->pipeline), GST_TYPE_VIDEO_OVERLAY);
if (!data->video_sink) {
GST_ERROR ("Could not retrieve video sink");
return NULL;
}
/* Instruct the bus to emit signals for each received message, and connect to the interesting signals */
bus = gst_element_get_bus (data->pipeline);
bus_source = gst_bus_create_watch (bus);
g_source_set_callback (bus_source, (GSourceFunc) gst_bus_async_signal_func, NULL, NULL);
g_source_attach (bus_source, data->context);
g_source_unref (bus_source);
g_signal_connect (G_OBJECT (bus), "message::error", (GCallback)error_cb, data);
g_signal_connect (G_OBJECT (bus), "message::state-changed", (GCallback)state_changed_cb, data);
gst_object_unref (bus);
/* Create a GLib Main Loop and set it to run */
GST_DEBUG ("Entering main loop... (CustomData:%p)", data);
data->main_loop = g_main_loop_new (data->context, FALSE);
check_initialization_complete (data);
g_main_loop_run (data->main_loop);
GST_DEBUG ("Exited main loop");
g_main_loop_unref (data->main_loop);
data->main_loop = NULL;
/* Free resources */
g_main_context_pop_thread_default(data->context);
g_main_context_unref (data->context);
gst_element_set_state (data->pipeline, GST_STATE_NULL);
gst_object_unref (data->video_sink);
gst_object_unref (data->pipeline);
return NULL;
}
void _bp_dvd_find_navigation (BansheePlayer *player)
{
GstElement *video_sink = NULL;
GstElement *navigation = NULL;
GstNavigation *previous_navigation;
previous_navigation = player->navigation;
g_object_get (player->playbin, "video-sink", &video_sink, NULL);
if (video_sink == NULL) {
player->navigation = NULL;
if (previous_navigation != NULL) {
gst_object_unref (previous_navigation);
}
}
navigation = GST_IS_BIN (video_sink)
? gst_bin_get_by_interface (GST_BIN (video_sink), GST_TYPE_NAVIGATION)
: video_sink;
player->navigation = GST_IS_NAVIGATION (navigation) ? GST_NAVIGATION (navigation) : NULL;
if (previous_navigation != NULL) {
gst_object_unref (previous_navigation);
}
gst_object_unref (video_sink);
}
void
empathy_video_src_set_channel (GstElement *src,
EmpathyGstVideoSrcChannel channel, guint percent)
{
GstElement *color;
GstColorBalance *balance;
const GList *channels;
GList *l;
/* Find something supporting GstColorBalance */
color = gst_bin_get_by_interface (GST_BIN (src), GST_TYPE_COLOR_BALANCE);
if (color == NULL)
return;
balance = GST_COLOR_BALANCE (color);
channels = gst_color_balance_list_channels (balance);
for (l = (GList *) channels; l != NULL; l = g_list_next (l))
{
GstColorBalanceChannel *c = GST_COLOR_BALANCE_CHANNEL (l->data);
if (g_ascii_strcasecmp (c->label, channel_names[channel]) == 0)
{
gst_color_balance_set_value (balance, c,
((c->max_value - c->min_value) * percent)/100
+ c->min_value);
break;
}
}
g_object_unref (color);
}
/* TODO: use video overlay in the proper way (like suggested in docs, see gtkvideooverlay example) */
static gboolean
expose_cb (GtkWidget * widget, gpointer data)
{
GstVideoOverlay *overlay =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (data),
GST_TYPE_VIDEO_OVERLAY));
gst_video_overlay_set_gtk_window (overlay, widget);
return FALSE;
}
bool CGstPlayback::SetWindow(void *window)
{
returnb_assert(m_playbin);
g_print("%s, get GST_TYPE_VIDEO_OVERLAY", __func__);
m_video_sink = gst_bin_get_by_interface(GST_BIN(m_playbin), GST_TYPE_VIDEO_OVERLAY);
returnb_assert(m_video_sink);
g_print("%s, set native window=(%x)", __func__, window);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (m_video_sink), (guintptr)window);
return true;
}
static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
gboolean ret = FALSE;
GstCaps *caps;
GST_DEBUG_OBJECT (self, "Starting image capture");
gst_element_set_state (self->src_vid_src, GST_STATE_READY);
if (self->image_renegotiate) {
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
if (self->src_zoom_filter)
g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
caps = gst_pad_get_allowed_caps (self->imgsrc);
gst_caps_replace (&self->image_capture_caps, caps);
gst_caps_unref (caps);
/* FIXME - do we need to update basecamerasrc width/height somehow here?
* if not, i think we need to do something about _when_ they get updated
* to be sure that set_element_zoom doesn't use the wrong values */
/* We caught this event in the src pad event handler and now we want to
* actually push it upstream */
gst_pad_send_event (self->outsel_imgpad, gst_event_new_reconfigure ());
self->image_renegotiate = FALSE;
}
if (photography) {
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
self->image_capture_caps);
ret = gst_photography_prepare_for_capture (photography,
(GstPhotographyCapturePrepared) img_capture_prepared,
self->image_capture_caps, self);
} else {
g_mutex_unlock (&bcamsrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (self,
self->image_capture_caps);
g_mutex_lock (&bcamsrc->capturing_mutex);
ret = TRUE;
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
}
return ret;
}
static gboolean
bp_video_find_xoverlay (BansheePlayer *player)
{
GstElement *video_sink = NULL;
GstElement *xoverlay;
GstXOverlay *previous_xoverlay;
gboolean found_xoverlay;
g_object_get (player->playbin, "video-sink", &video_sink, NULL);
g_mutex_lock (player->video_mutex);
previous_xoverlay = player->xoverlay;
if (video_sink == NULL) {
player->xoverlay = NULL;
if (previous_xoverlay != NULL) {
gst_object_unref (previous_xoverlay);
}
g_mutex_unlock (player->video_mutex);
return FALSE;
}
xoverlay = GST_IS_BIN (video_sink)
? gst_bin_get_by_interface (GST_BIN (video_sink), GST_TYPE_X_OVERLAY)
: video_sink;
player->xoverlay = GST_IS_X_OVERLAY (xoverlay) ? GST_X_OVERLAY (xoverlay) : NULL;
if (previous_xoverlay != NULL) {
gst_object_unref (previous_xoverlay);
}
#if !defined(GDK_WINDOWING_WIN32) // We can't rely on aspect ratio from dshowvideosink
if (player->xoverlay != NULL && g_object_class_find_property (
G_OBJECT_GET_CLASS (player->xoverlay), "force-aspect-ratio")) {
g_object_set (G_OBJECT (player->xoverlay), "force-aspect-ratio", TRUE, NULL);
}
#endif
if (player->xoverlay != NULL && g_object_class_find_property (
G_OBJECT_GET_CLASS (player->xoverlay), "handle-events")) {
g_object_set (G_OBJECT (player->xoverlay), "handle-events", FALSE, NULL);
}
gst_object_unref (video_sink);
found_xoverlay = (player->xoverlay != NULL) ? TRUE : FALSE;
g_mutex_unlock (player->video_mutex);
return found_xoverlay;
}
static void
gst_gl_sink_bin_overlay_expose (GstVideoOverlay * overlay)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_expose (overlay_element);
gst_object_unref (overlay_element);
}
}
static void
gst_gl_sink_bin_color_balance_set_value (GstColorBalance * balance,
GstColorBalanceChannel * channel, gint value)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
GstColorBalance *balance_element = NULL;
balance_element =
GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_COLOR_BALANCE));
if (balance_element) {
gst_color_balance_set_value (balance_element, channel, value);
gst_object_unref (balance_element);
}
}
static void
gst_gl_sink_bin_overlay_set_render_rectangle (GstVideoOverlay * overlay, gint x,
gint y, gint width, gint height)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_set_render_rectangle (overlay_element, x, y, width,
height);
gst_object_unref (overlay_element);
}
}
/**
* gst_base_camera_src_get_photography:
* @self: the camerasrc bin
*
* Get object implementing photography interface, if there is one. Otherwise
* returns NULL.
*/
GstPhotography *
gst_base_camera_src_get_photography (GstBaseCameraSrc * self)
{
GstElement *elem;
if (GST_IS_PHOTOGRAPHY (self)) {
elem = GST_ELEMENT (self);
} else {
elem = gst_bin_get_by_interface (GST_BIN (self), GST_TYPE_PHOTOGRAPHY);
}
if (elem) {
return GST_PHOTOGRAPHY (self);
}
return NULL;
}
/**
* gst_base_camera_src_get_colorbalance:
* @self: the camerasrc bin
*
* Get object implementing colorbalance interface, if there is one. Otherwise
* returns NULL.
*/
GstColorBalance *
gst_base_camera_src_get_color_balance (GstBaseCameraSrc * self)
{
GstElement *elem;
if (GST_IS_COLOR_BALANCE (self)) {
elem = GST_ELEMENT (self);
} else {
elem = gst_bin_get_by_interface (GST_BIN (self), GST_TYPE_COLOR_BALANCE);
}
if (elem) {
return GST_COLOR_BALANCE (self);
}
return NULL;
}
static const GList *
gst_gl_sink_bin_color_balance_list_channels (GstColorBalance * balance)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
GstColorBalance *balance_element = NULL;
const GList *list = NULL;
balance_element =
GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_COLOR_BALANCE));
if (balance_element) {
list = gst_color_balance_list_channels (balance_element);
gst_object_unref (balance_element);
}
return list;
}
static GstColorBalanceType
gst_gl_sink_bin_color_balance_get_balance_type (GstColorBalance * balance)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
GstColorBalance *balance_element = NULL;
GstColorBalanceType type = 0;
balance_element =
GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_COLOR_BALANCE));
if (balance_element) {
type = gst_color_balance_get_balance_type (balance_element);
gst_object_unref (balance_element);
}
return type;
}
static void
gst_gl_sink_bin_navigation_send_event (GstNavigation * navigation, GstStructure
* structure)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (navigation);
GstElement *nav =
gst_bin_get_by_interface (GST_BIN (self), GST_TYPE_NAVIGATION);
if (nav) {
gst_navigation_send_event (GST_NAVIGATION (nav), structure);
structure = NULL;
gst_object_unref (nav);
} else {
GstEvent *event = gst_event_new_navigation (structure);
structure = NULL;
gst_element_send_event (GST_ELEMENT (self), event);
}
}
static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
gboolean ret = FALSE;
GstCaps *caps;
GST_DEBUG_OBJECT (self, "Starting image capture");
if (self->image_renegotiate) {
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
if (self->src_zoom_filter)
g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
caps = gst_pad_get_allowed_caps (self->imgsrc);
gst_caps_replace (&self->image_capture_caps, caps);
gst_caps_unref (caps);
self->image_renegotiate = FALSE;
}
if (photography) {
GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
self->image_capture_caps);
ret = gst_photography_prepare_for_capture (photography,
(GstPhotoCapturePrepared) img_capture_prepared,
self->image_capture_caps, self);
} else {
g_mutex_unlock (bcamsrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (self,
self->image_capture_caps);
g_mutex_lock (bcamsrc->capturing_mutex);
ret = TRUE;
}
return ret;
}
static GstColorBalance *
dup_color_balance (GstElement *src)
{
GstElement *color;
/* Find something supporting GstColorBalance */
color = gst_bin_get_by_interface (GST_BIN (src), GST_TYPE_COLOR_BALANCE);
if (color == NULL)
return NULL;
/* colorbalance is wrapped by GstImplementsInterface, we
* need to check if it is actually supported for this instance
* in its current state before trying to use it */
if (!GST_IS_COLOR_BALANCE (color))
{
g_object_unref (color);
return NULL;
}
return GST_COLOR_BALANCE (color);
}
guint
empathy_video_src_get_supported_channels (GstElement *src)
{
GstElement *color;
GstColorBalance *balance;
const GList *channels;
GList *l;
guint result = 0;
/* Find something supporting GstColorBalance */
color = gst_bin_get_by_interface (GST_BIN (src), GST_TYPE_COLOR_BALANCE);
if (color == NULL)
goto out;
balance = GST_COLOR_BALANCE (color);
channels = gst_color_balance_list_channels (balance);
for (l = (GList *) channels; l != NULL; l = g_list_next (l))
{
GstColorBalanceChannel *channel = GST_COLOR_BALANCE_CHANNEL (l->data);
int i;
for (i = 0; i < NR_EMPATHY_GST_VIDEO_SRC_CHANNELS; i++)
{
if (g_ascii_strcasecmp (channel->label, channel_names[i]) == 0)
{
result |= (1 << i);
break;
}
}
}
g_object_unref (color);
out:
return result;
}
G_MODULE_EXPORT gboolean
delayed_expose_cb(signal_user_data_t *ud)
{
GstElement *vsink;
GstXOverlay *xover;
if (!ud->preview->live_enabled)
return FALSE;
g_object_get(ud->preview->play, "video-sink", &vsink, NULL);
if (vsink == NULL)
return FALSE;
if (GST_IS_BIN(vsink))
xover = GST_X_OVERLAY(gst_bin_get_by_interface(
GST_BIN(vsink), GST_TYPE_X_OVERLAY));
else
xover = GST_X_OVERLAY(vsink);
gst_x_overlay_expose(xover);
// This function is initiated by g_idle_add. Must return false
// so that it is not called again
return FALSE;
}
/* Main method for the native code. This is executed on its own thread. */
static void *app_function (void *userdata) {
JavaVMAttachArgs args;
GstBus *bus;
CustomData *data = (CustomData *)userdata;
GSource *bus_source;
GError *error = NULL;
GST_DEBUG ("Creating pipeline in CustomData at %p", data);
/* Create our own GLib Main Context and make it the default one */
data->context = g_main_context_new ();
g_main_context_push_thread_default(data->context);
/* Build pipeline */
//char caps[1000]="caps = \"application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\\\"Z2QAHqyyAUB7YCIAAAMAAgAAAwBlHixckA\\\\=\\\\=\\\\,aOvBssiw\\\", payload=(int)96, ssrc=(uint)226114972, timestamp-offset=(uint)497630140, seqnum-offset=(uint)4095\"";
//data->pipeline = gst_parse_launch("udpsrc port=5010 caps = \"application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, sprop-parameter-sets=(string)\\\"Z2QAHqyyAUB7YCIAAAMAAgAAAwB5HixckA\\\\=\\\\=\\\\,aOvBssiw\\\", payload=(int)96, ssrc=(uint)1750089033, timestamp-offset=(uint)1121294972, seqnum-offset=(uint)31049\" ! rtph264depay ! avdec_h264 ! autovideosink sync=false", &error);
data->pipeline = gst_parse_launch(pipeline_path, &error);
if (error) {
gchar *message = g_strdup_printf("Unable to build pipeline: %s", error->message);
g_clear_error (&error);
set_ui_message(message, data);
g_free (message);
return NULL;
}
/* Set the pipeline to READY, so it can already accept a window handle, if we have one */
gst_element_set_state(data->pipeline, GST_STATE_READY);
data->video_sink = gst_bin_get_by_interface(GST_BIN(data->pipeline), GST_TYPE_VIDEO_OVERLAY);
if (!data->video_sink) {
GST_ERROR ("Could not retrieve video sink");
return NULL;
}
/* Instruct the bus to emit signals for each received message, and connect to the interesting signals */
bus = gst_element_get_bus (data->pipeline);
bus_source = gst_bus_create_watch (bus);
g_source_set_callback (bus_source, (GSourceFunc) gst_bus_async_signal_func, NULL, NULL);
g_source_attach (bus_source, data->context);
g_source_unref (bus_source);
g_signal_connect (G_OBJECT (bus), "message::error", (GCallback)error_cb, data);
g_signal_connect (G_OBJECT (bus), "message::state-changed", (GCallback)state_changed_cb, data);
gst_object_unref (bus);
/* Create a GLib Main Loop and set it to run */
GST_DEBUG ("Entering main loop... (CustomData:%p)", data);
data->main_loop = g_main_loop_new (data->context, FALSE);
check_initialization_complete (data);
g_main_loop_run (data->main_loop);
GST_DEBUG ("Exited main loop");
g_main_loop_unref (data->main_loop);
data->main_loop = NULL;
/* Free resources */
g_main_context_pop_thread_default(data->context);
g_main_context_unref (data->context);
gst_element_set_state (data->pipeline, GST_STATE_NULL);
gst_object_unref (data->video_sink);
gst_object_unref (data->pipeline);
return NULL;
}
ElementPtr Bin::getElementByInterface(QGlib::Type interfaceType) const
{
return ElementPtr::wrap(gst_bin_get_by_interface(object<GstBin>(), interfaceType), false);
}
static gboolean
start_image_capture (GstWrapperCameraBinSrc * self)
{
GstBaseCameraSrc *bcamsrc = GST_BASE_CAMERA_SRC (self);
GstPhotography *photography =
(GstPhotography *) gst_bin_get_by_interface (GST_BIN_CAST (bcamsrc),
GST_TYPE_PHOTOGRAPHY);
gboolean ret = FALSE;
GstCaps *caps;
GstPad *pad, *peer;
GST_DEBUG_OBJECT (self, "Starting image capture");
gst_element_set_state (self->src_vid_src, GST_STATE_READY);
/* FIXME - V4L2 source will not close the device until all buffers have came
* back. Flushing the pipeline, will ensure it's properly closed, and that
* setting it back to PLAYING will work. This is more a workaround then a
* solution to buffer reclaiming. */
pad = gst_element_get_static_pad (self->src_vid_src, "src");
peer = gst_pad_get_peer (pad);
gst_object_unref (pad);
gst_pad_send_event (peer, gst_event_new_flush_start ());
gst_pad_send_event (peer, gst_event_new_flush_stop (TRUE));
gst_object_unref (peer);
if (self->image_renegotiate) {
/* clean capsfilter caps so they don't interfere here */
g_object_set (self->src_filter, "caps", NULL, NULL);
if (self->src_zoom_filter)
g_object_set (self->src_zoom_filter, "caps", NULL, NULL);
caps = gst_pad_get_allowed_caps (self->imgsrc);
gst_caps_replace (&self->image_capture_caps, caps);
gst_caps_unref (caps);
/* FIXME - do we need to update basecamerasrc width/height somehow here?
* if not, i think we need to do something about _when_ they get updated
* to be sure that set_element_zoom doesn't use the wrong values */
/* We caught this event in the src pad event handler and now we want to
* actually push it upstream */
gst_pad_send_event (self->outsel_imgpad, gst_event_new_reconfigure ());
self->image_renegotiate = FALSE;
}
if (photography) {
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
GST_DEBUG_OBJECT (self, "prepare image capture caps %" GST_PTR_FORMAT,
self->image_capture_caps);
ret = gst_photography_prepare_for_capture (photography,
(GstPhotographyCapturePrepared) img_capture_prepared,
self->image_capture_caps, self);
} else {
g_mutex_unlock (&bcamsrc->capturing_mutex);
gst_wrapper_camera_bin_reset_video_src_caps (self,
self->image_capture_caps);
g_mutex_lock (&bcamsrc->capturing_mutex);
ret = TRUE;
gst_element_set_state (self->src_vid_src, GST_STATE_PLAYING);
}
return ret;
}
