2 * This file is part of CameraPlus.
4 * Copyright (C) 2012 Mohammed Sameer <msameer@foolab.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "qtcamdevice.h"
22 #include "qtcamviewfinder.h"
23 #include "qtcamconfig.h"
24 #include "qtcamdevice_p.h"
27 #include "qtcamgstreamermessagelistener.h"
28 #include "qtcammode.h"
29 #include "qtcamimagemode.h"
30 #include "qtcamvideomode.h"
31 #include "qtcamnotifications.h"
32 #include "gst/gstcopy.h"
33 #include "qtcampropertysetter.h"
35 QtCamDevice::QtCamDevice(QtCamConfig *config, const QString& name,
36 const QVariant& id, QObject *parent) :
37 QObject(parent), d_ptr(new QtCamDevicePrivate) {
39 static gboolean register_copy = TRUE;
41 qt_cam_copy_register();
42 register_copy = FALSE;
50 d_ptr->cameraBin = gst_element_factory_make("camerabin2", "QtCameraCameraBin");
51 if (!d_ptr->cameraBin) {
52 qCritical() << "Failed to create camerabin";
56 d_ptr->propertySetter = new QtCamPropertySetter(d_ptr);
58 d_ptr->createAndAddElement(d_ptr->conf->audioSource(), "audio-source", "QtCameraAudioSrc");
59 if (!d_ptr->conf->wrapperVideoSource().isEmpty() &&
60 !d_ptr->conf->wrapperVideoSourceProperty().isEmpty()) {
61 d_ptr->createAndAddVideoSourceAndWrapper();
64 d_ptr->createAndAddVideoSource();
68 0x00000001 /* no-audio-conversion - Do not use audio conversion elements */
69 | 0x00000002 /* no-video-conversion - Do not use video conversion elements */
70 | 0x00000004 /* no-viewfinder-conversion - Do not use viewfinder conversion elements */
71 | 0x00000008; /* no-image-conversion - Do not use image conversion elements */
73 g_object_set(d_ptr->cameraBin, "flags", flags, NULL);
75 d_ptr->setAudioCaptureCaps();
76 d_ptr->addViewfinderFilters();
78 d_ptr->listener = new QtCamGStreamerMessageListener(gst_element_get_bus(d_ptr->cameraBin),
81 QObject::connect(d_ptr->listener, SIGNAL(error(const QString&, int, const QString&)),
82 this, SLOT(_d_error(const QString&, int, const QString&)));
83 QObject::connect(d_ptr->listener, SIGNAL(started()), this, SLOT(_d_started()));
84 QObject::connect(d_ptr->listener, SIGNAL(stopped()), this, SLOT(_d_stopped()));
85 QObject::connect(d_ptr->listener, SIGNAL(stopping()), this, SLOT(_d_stopping()));
87 g_signal_connect(d_ptr->cameraBin, "notify::idle",
88 G_CALLBACK(QtCamDevicePrivate::on_idle_changed), d_ptr);
90 g_signal_connect(d_ptr->wrapperVideoSource, "notify::ready-for-capture",
91 G_CALLBACK(QtCamDevicePrivate::on_ready_for_capture_changed), d_ptr);
93 d_ptr->image = new QtCamImageMode(d_ptr, this);
94 d_ptr->video = new QtCamVideoMode(d_ptr, this);
96 d_ptr->notifications = new QtCamNotifications(this, this);
99 QtCamDevice::~QtCamDevice() {
102 d_ptr->image->deactivate();
103 d_ptr->video->deactivate();
105 delete d_ptr->image; d_ptr->image = 0;
106 delete d_ptr->video; d_ptr->video = 0;
108 delete d_ptr->propertySetter;
110 if (d_ptr->cameraBin) {
111 gst_object_unref(d_ptr->cameraBin);
114 delete d_ptr; d_ptr = 0;
117 bool QtCamDevice::setViewfinder(QtCamViewfinder *viewfinder) {
119 qWarning() << "QtCamDevice: pipeline must be stopped before setting a viewfinder";
123 if (d_ptr->viewfinder == viewfinder) {
128 qWarning() << "QtCamDevice: viewfinder cannot be unset.";
132 if (d_ptr->viewfinder) {
133 qWarning() << "QtCamDevice: viewfinder cannot be replaced.";
137 if (!viewfinder->setDevice(this)) {
141 d_ptr->viewfinder = viewfinder;
146 QtCamViewfinder *QtCamDevice::viewfinder() const {
147 return d_ptr->viewfinder;
150 bool QtCamDevice::start() {
152 qWarning() << "Pipeline must be stopped first because of an error.";
156 if (!d_ptr->cameraBin) {
157 qWarning() << "Missing camerabin";
161 if (!d_ptr->viewfinder) {
162 qWarning() << "Viewfinder not set";
170 if (!d_ptr->active) {
171 d_ptr->image->activate();
174 d_ptr->active->applySettings();
178 if (!d_ptr->setViewfinderSink()) {
182 GstStateChangeReturn err = gst_element_set_state(d_ptr->cameraBin, GST_STATE_PLAYING);
183 if (err == GST_STATE_CHANGE_FAILURE) {
184 qWarning() << "Failed to start camera pipeline";
188 // We need to wait for startup to complet. There's a race condition somewhere in the pipeline.
189 // If we set the scene mode to night and update the resolution while starting up
190 // then subdevsrc2 barfs:
191 // streaming task paused, reason not-negotiated (-4)
193 if (err != GST_STATE_CHANGE_ASYNC) {
197 if (gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE)
198 != GST_STATE_CHANGE_SUCCESS) {
199 // We are seriously screwed up :(
203 if (state != GST_STATE_PLAYING) {
204 // Huh ? Is this even possible ??
211 bool QtCamDevice::stop(bool force) {
212 if (!d_ptr->cameraBin) {
217 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
218 d_ptr->error = false;
220 d_ptr->viewfinder->stop();
226 gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE);
228 if (state == GST_STATE_NULL) {
239 // First we go to ready:
240 GstStateChangeReturn st = gst_element_set_state(d_ptr->cameraBin, GST_STATE_READY);
241 if (st != GST_STATE_CHANGE_FAILURE) {
243 d_ptr->listener->flushMessages();
247 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
249 d_ptr->viewfinder->stop();
254 bool QtCamDevice::isRunning() {
255 if (!d_ptr->cameraBin) {
260 GstStateChangeReturn err = gst_element_get_state(d_ptr->cameraBin,
261 &state, 0, GST_CLOCK_TIME_NONE);
263 if (err == GST_STATE_CHANGE_FAILURE || state != GST_STATE_PLAYING) {
270 bool QtCamDevice::isIdle() {
271 if (!d_ptr->cameraBin) {
275 gboolean idle = FALSE;
276 g_object_get(d_ptr->cameraBin, "idle", &idle, NULL);
281 QtCamImageMode *QtCamDevice::imageMode() const {
285 QtCamVideoMode *QtCamDevice::videoMode() const {
289 QtCamMode *QtCamDevice::activeMode() const {
290 return d_ptr->active;
293 QString QtCamDevice::name() const {
297 QVariant QtCamDevice::id() const {
301 QtCamConfig *QtCamDevice::config() const {
305 QtCamGStreamerMessageListener *QtCamDevice::listener() const {
306 return d_ptr->listener;
309 QtCamNotifications *QtCamDevice::notifications() const {
310 return d_ptr->notifications;
313 #include "moc_qtcamdevice.cpp"