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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-02 16:52:42 +00:00
camerabin2: viewfinderbin: Adds viewfinderbin element
Adds viewfinder bin element, one of the modules of camerabin2 that is responsible for displaying the video from the camera. For now it is only a bin with ffmpegcolorspace ! videoscale ! autovideosink
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4 changed files with 251 additions and 0 deletions
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@ -293,6 +293,7 @@ AG_GST_CHECK_PLUGIN(audioparsers)
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AG_GST_CHECK_PLUGIN(autoconvert)
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AG_GST_CHECK_PLUGIN(autoconvert)
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AG_GST_CHECK_PLUGIN(bayer)
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AG_GST_CHECK_PLUGIN(bayer)
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AG_GST_CHECK_PLUGIN(camerabin)
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AG_GST_CHECK_PLUGIN(camerabin)
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AG_GST_CHECK_PLUGIN(camerabin2)
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AG_GST_CHECK_PLUGIN(cdxaparse)
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AG_GST_CHECK_PLUGIN(cdxaparse)
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AG_GST_CHECK_PLUGIN(coloreffects)
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AG_GST_CHECK_PLUGIN(coloreffects)
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AG_GST_CHECK_PLUGIN(colorspace)
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AG_GST_CHECK_PLUGIN(colorspace)
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@ -1719,6 +1720,7 @@ gst/audioparsers/Makefile
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gst/autoconvert/Makefile
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gst/autoconvert/Makefile
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gst/bayer/Makefile
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gst/bayer/Makefile
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gst/camerabin/Makefile
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gst/camerabin/Makefile
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gst/camerabin2/Makefile
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gst/cdxaparse/Makefile
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gst/cdxaparse/Makefile
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gst/colorspace/Makefile
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gst/colorspace/Makefile
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gst/coloreffects/Makefile
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gst/coloreffects/Makefile
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15
gst/camerabin2/Makefile.am
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15
gst/camerabin2/Makefile.am
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@ -0,0 +1,15 @@
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plugin_LTLIBRARIES = libgstcamerabin2.la
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libgstcamerabin2_la_SOURCES = gstviewfinderbin.c
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libgstcamerabin2_la_CFLAGS = \
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$(GST_PLUGINS_BAD_CFLAGS) \
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$(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS)
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libgstcamerabin2_la_LIBADD = \
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$(GST_LIBS) $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS)
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libgstcamerabin2_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstcamerabin2_la_LIBTOOLFLAGS = --tag=disable-static
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noinst_HEADERS = gstviewfinderbin.h
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180
gst/camerabin2/gstviewfinderbin.c
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180
gst/camerabin2/gstviewfinderbin.c
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@ -0,0 +1,180 @@
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/* GStreamer
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* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-gstviewfinderbin
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*
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* The gstviewfinderbin element does FIXME stuff.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v videotestsrc ! viewfinderbin
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* ]|
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* FIXME Describe what the pipeline does.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstviewfinderbin.h"
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/* prototypes */
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enum
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{
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PROP_0
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};
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/* pad templates */
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb")
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);
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/* class initialization */
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GST_BOILERPLATE (GstViewfinderBin, gst_viewfinder_bin, GstBin, GST_TYPE_BIN);
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/* Element class functions */
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static GstStateChangeReturn
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gst_viewfinder_bin_change_state (GstElement * element, GstStateChange trans);
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static void
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gst_viewfinder_bin_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_template));
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gst_element_class_set_details_simple (element_class, "Viewfinder Bin",
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"Sink/Video", "Viewfinder Bin used in camerabin2",
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"Thiago Santos <thiago.sousa.santos@collabora.co.uk>");
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}
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static void
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gst_viewfinder_bin_class_init (GstViewfinderBinClass * klass)
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{
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GstElementClass *element_class;
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element_class = GST_ELEMENT_CLASS (klass);
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element_class->change_state =
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GST_DEBUG_FUNCPTR (gst_viewfinder_bin_change_state);
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}
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static void
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gst_viewfinder_bin_init (GstViewfinderBin * viewfinderbin,
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GstViewfinderBinClass * viewfinderbin_class)
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{
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viewfinderbin->ghostpad = gst_ghost_pad_new_no_target_from_template ("sink",
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gst_static_pad_template_get (&sink_template));
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gst_element_add_pad (GST_ELEMENT_CAST (viewfinderbin),
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viewfinderbin->ghostpad);
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}
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static gboolean
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gst_viewfinder_bin_create_elements (GstViewfinderBin * vfbin)
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{
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GstElement *csp;
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GstElement *videoscale;
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GstElement *sink;
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GstPad *pad = NULL;
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if (vfbin->elements_created)
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return TRUE;
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/* create elements */
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csp = gst_element_factory_make ("ffmpegcolorspace", "vfbin-csp");
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if (!csp)
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goto error;
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videoscale = gst_element_factory_make ("videoscale", "vfbin-videoscale");
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if (!videoscale)
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goto error;
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sink = gst_element_factory_make ("autovideosink", "vfbin-sink");
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if (!sink)
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goto error;
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/* add and link */
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gst_bin_add_many (GST_BIN_CAST (vfbin), csp, videoscale, sink, NULL);
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if (!gst_element_link_many (csp, videoscale, sink, NULL))
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goto error;
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/* add ghostpad */
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pad = gst_element_get_static_pad (csp, "sink");
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if (!gst_ghost_pad_set_target (GST_GHOST_PAD (vfbin->ghostpad), pad))
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goto error;
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vfbin->elements_created = TRUE;
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return TRUE;
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error:
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if (pad)
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gst_object_unref (pad);
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return FALSE;
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}
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static GstStateChangeReturn
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gst_viewfinder_bin_change_state (GstElement * element, GstStateChange trans)
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{
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GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
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GstViewfinderBin *vfbin = GST_VIEWFINDER_BIN_CAST (element);
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switch (trans) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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if (!gst_viewfinder_bin_create_elements (vfbin)) {
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return GST_STATE_CHANGE_FAILURE;
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}
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
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switch (trans) {
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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default:
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break;
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}
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return ret;
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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gst_element_register (plugin, "viewfinderbin", GST_RANK_NONE,
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gst_viewfinder_bin_get_type ());
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"viewfinderbin", "viewfinder bin of camerabin2",
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plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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54
gst/camerabin2/gstviewfinderbin.h
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54
gst/camerabin2/gstviewfinderbin.h
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@ -0,0 +1,54 @@
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/* GStreamer
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* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef _GST_VIEWFINDER_BIN_H_
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#define _GST_VIEWFINDER_BIN_H_
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIEWFINDER_BIN (gst_viewfinder_bin_get_type())
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#define GST_VIEWFINDER_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIEWFINDER_BIN,GstViewfinderBin))
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#define GST_VIEWFINDER_BIN_CAST(obj) ((GstViewfinderBin *) obj)
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#define GST_VIEWFINDER_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIEWFINDER_BIN,GstViewfinderBinClass))
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#define GST_IS_VIEWFINDER_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIEWFINDER_BIN))
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#define GST_IS_VIEWFINDER_BIN_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIEWFINDER_BIN))
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typedef struct _GstViewfinderBin GstViewfinderBin;
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typedef struct _GstViewfinderBinClass GstViewfinderBinClass;
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struct _GstViewfinderBin
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{
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GstBin bin;
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GstPad *ghostpad;
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gboolean elements_created;
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};
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struct _GstViewfinderBinClass
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{
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GstBinClass bin_class;
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};
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GType gst_viewfinder_bin_get_type (void);
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G_END_DECLS
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#endif
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