diff -r fae53e47b8b4 -r 7ce29e50e9e1 gst_plugins_good/gst/camerabin/camerabingeneral.c --- a/gst_plugins_good/gst/camerabin/camerabingeneral.c Fri Jun 11 16:24:58 2010 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,263 +0,0 @@ -/* - * GStreamer - * Copyright (C) 2008 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:camerabingeneral - * @short_description: helper functions for #GstCameraBin and it's modules - * - * Common helper functions for #GstCameraBin, #GstCameraBinImage and - * #GstCameraBinVideo. - * - */ - -#include "camerabingeneral.h" -#include - -GST_DEBUG_CATEGORY (gst_camerabin_debug); - -static gboolean -camerabin_general_dbg_have_event (GstPad * pad, GstEvent * event, - gpointer u_data) -{ - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_NEWSEGMENT: - { - GstElement *elem = (GstElement *) u_data; - gchar *elem_name = gst_element_get_name (elem); - gchar *pad_name = gst_pad_get_name (pad); - - gboolean update; - gdouble rate; - GstFormat format; - gint64 start, stop, pos; - gst_event_parse_new_segment (event, &update, &rate, &format, &start, - &stop, &pos); - - GST_DEBUG ("element %s, pad %s, new_seg_start =%" GST_TIME_FORMAT - ", new_seg_stop =%" GST_TIME_FORMAT - ", new_seg_pos =%" GST_TIME_FORMAT "\n", elem_name, pad_name, - GST_TIME_ARGS (start), GST_TIME_ARGS (stop), GST_TIME_ARGS (pos)); - - g_free (pad_name); - g_free (elem_name); - } - break; - default: - break; - } - - return TRUE; -} - -static gboolean -camerabin_general_dbg_have_buffer (GstPad * pad, GstBuffer * buffer, - gpointer u_data) -{ - GstElement *elem = (GstElement *) u_data; - gchar *elem_name = gst_element_get_name (elem); - gchar *pad_name = gst_pad_get_name (pad); - - GST_DEBUG ("element %s, pad %s, buf_ts =%" GST_TIME_FORMAT "\n", elem_name, - pad_name, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); - - g_free (pad_name); - g_free (elem_name); - - return TRUE; - -} - -void -camerabin_general_dbg_set_probe (GstElement * elem, gchar * pad_name, - gboolean buf, gboolean evt) -{ - GstPad *pad = gst_element_get_static_pad (elem, pad_name); - - if (buf) - gst_pad_add_buffer_probe (pad, - G_CALLBACK (camerabin_general_dbg_have_buffer), elem); - if (evt) - gst_pad_add_event_probe (pad, - G_CALLBACK (camerabin_general_dbg_have_event), elem); - - gst_object_unref (pad); -} - -/** - * gst_camerabin_add_element: - * @bin: add an element to this bin - * @new_elem: new element to be added - * - * Adds given element to given @bin. Looks for an unconnected src pad - * from the @bin and links the element to it. Raises an error if adding - * or linking failed. - * - * Returns: %TRUE if adding and linking succeeded, %FALSE otherwise. - */ -gboolean -gst_camerabin_add_element (GstBin * bin, GstElement * new_elem) -{ - gboolean ret = FALSE; - - ret = gst_camerabin_try_add_element (bin, new_elem); - - if (!ret) { - gchar *elem_name = gst_element_get_name (new_elem); - GST_ELEMENT_ERROR (bin, CORE, NEGOTIATION, (NULL), - ("linking %s failed", elem_name)); - g_free (elem_name); - } - - return ret; -} - -/** - * gst_camerabin_try_add_element: - * @bin: tries adding an element to this bin - * @new_elem: new element to be added - * - * Adds given element to given @bin. Looks for an unconnected src pad - * from the @bin and links the element to it. - * - * Returns: %TRUE if adding and linking succeeded, %FALSE otherwise. - */ -gboolean -gst_camerabin_try_add_element (GstBin * bin, GstElement * new_elem) -{ - GstPad *bin_pad; - GstElement *bin_elem; - gboolean ret = TRUE; - - if (!bin || !new_elem) { - return FALSE; - } - - /* Get pads for linking */ - GST_DEBUG ("finding unconnected src pad"); - //bin_pad = gst_bin_find_unlinked_pad (bin, GST_PAD_SRC); - bin_pad = gst_bin_find_unconnected_pad (bin, GST_PAD_SRC); - GST_DEBUG ("unconnected pad %s:%s", GST_DEBUG_PAD_NAME (bin_pad)); - /* Add to bin */ - gst_bin_add (GST_BIN (bin), new_elem); - /* Link, if unconnected pad was found, otherwise just add it to bin */ - if (bin_pad) { - bin_elem = gst_pad_get_parent_element (bin_pad); - gst_object_unref (bin_pad); - if (!gst_element_link (bin_elem, new_elem)) { - gst_bin_remove (bin, new_elem); - ret = FALSE; - } - gst_object_unref (bin_elem); - } - - return ret; -} - -/** - * gst_camerabin_create_and_add_element: - * @bin: tries adding an element to this bin - * @elem_name: name of the element to be created - * - * Creates an element according to given name and - * adds it to given @bin. Looks for an unconnected src pad - * from the @bin and links the element to it. - * - * Returns: pointer to the new element if successful, NULL otherwise. - */ -GstElement * -gst_camerabin_create_and_add_element (GstBin * bin, const gchar * elem_name) -{ - GstElement *new_elem = NULL; - - GST_DEBUG ("adding %s", elem_name); - new_elem = gst_element_factory_make (elem_name, NULL); - if (!new_elem) { - GST_ELEMENT_ERROR (bin, CORE, MISSING_PLUGIN, (NULL), - ("could not create \"%s\" element.", elem_name)); - } else if (!gst_camerabin_add_element (bin, new_elem)) { - new_elem = NULL; - } - - return new_elem; -} - -/** - * gst_camerabin_remove_elements_from_bin: - * @bin: removes all elements from this bin - * - * Removes all elements from this @bin. - */ -void -gst_camerabin_remove_elements_from_bin (GstBin * bin) -{ - GstIterator *iter = NULL; - gpointer data = NULL; - GstElement *elem = NULL; - gboolean done = FALSE; - - iter = gst_bin_iterate_elements (bin); - while (!done) { - switch (gst_iterator_next (iter, &data)) { - case GST_ITERATOR_OK: - elem = GST_ELEMENT (data); - gst_bin_remove (bin, elem); - /* Iterator increased the element refcount, so unref */ - gst_object_unref (elem); - break; - case GST_ITERATOR_RESYNC: - gst_iterator_resync (iter); - break; - case GST_ITERATOR_ERROR: - GST_WARNING_OBJECT (bin, "error in iterating elements"); - done = TRUE; - break; - case GST_ITERATOR_DONE: - done = TRUE; - break; - } - } - gst_iterator_free (iter); -} - -/** - * gst_camerabin_drop_eos_probe: - * @pad: pad receiving the event - * @event: received event - * @u_data: not used - * - * Event probe that drop all eos events. - * - * Returns: FALSE to drop the event, TRUE otherwise - */ -gboolean -gst_camerabin_drop_eos_probe (GstPad * pad, GstEvent * event, gpointer u_data) -{ - gboolean ret = TRUE; - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_EOS: - GST_DEBUG ("dropping eos in %s:%s", GST_DEBUG_PAD_NAME (pad)); - ret = FALSE; - break; - default: - break; - } - return ret; -}