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"
34 #include "qtcamanalysisbin.h"
36 QtCamDevice::QtCamDevice(QtCamConfig *config, const QString& name,
37 const QVariant& id, QObject *parent) :
38 QObject(parent), d_ptr(new QtCamDevicePrivate) {
40 static gboolean register_copy = TRUE;
42 qt_cam_copy_register();
43 register_copy = FALSE;
51 d_ptr->cameraBin = gst_element_factory_make("camerabin2", "QtCameraCameraBin");
52 if (!d_ptr->cameraBin) {
53 qCritical() << "Failed to create camerabin";
57 d_ptr->propertySetter = new QtCamPropertySetter(d_ptr);
59 d_ptr->createAndAddElement(d_ptr->conf->audioSource(), "audio-source", "QtCameraAudioSrc");
60 if (!d_ptr->conf->wrapperVideoSource().isEmpty() &&
61 !d_ptr->conf->wrapperVideoSourceProperty().isEmpty()) {
62 d_ptr->createAndAddVideoSourceAndWrapper();
65 d_ptr->createAndAddVideoSource();
69 0x00000001 /* no-audio-conversion - Do not use audio conversion elements */
70 | 0x00000002 /* no-video-conversion - Do not use video conversion elements */
71 | 0x00000004 /* no-viewfinder-conversion - Do not use viewfinder conversion elements */
72 | 0x00000008; /* no-image-conversion - Do not use image conversion elements */
74 g_object_set(d_ptr->cameraBin, "flags", flags, NULL);
76 d_ptr->setAudioCaptureCaps();
78 QStringList viewfinderFilters = d_ptr->conf->viewfinderFilters();
79 if (!viewfinderFilters.isEmpty()) {
80 d_ptr->viewfinderFilters =
81 QtCamAnalysisBin::create(viewfinderFilters, "QtCamViewfinderFilters");
83 if (!d_ptr->viewfinderFilters) {
84 qWarning() << "Failed to create viewfinder filters";
88 g_object_set(d_ptr->cameraBin, "viewfinder-filter", d_ptr->viewfinderFilters->bin(), NULL);
90 d_ptr->listener = new QtCamGStreamerMessageListener(gst_element_get_bus(d_ptr->cameraBin),
93 QObject::connect(d_ptr->listener, SIGNAL(error(const QString&, int, const QString&)),
94 this, SLOT(_d_error(const QString&, int, const QString&)));
95 QObject::connect(d_ptr->listener, SIGNAL(started()), this, SLOT(_d_started()));
96 QObject::connect(d_ptr->listener, SIGNAL(stopped()), this, SLOT(_d_stopped()));
97 QObject::connect(d_ptr->listener, SIGNAL(stopping()), this, SLOT(_d_stopping()));
99 g_signal_connect(d_ptr->cameraBin, "notify::idle",
100 G_CALLBACK(QtCamDevicePrivate::on_idle_changed), d_ptr);
102 g_signal_connect(d_ptr->wrapperVideoSource, "notify::ready-for-capture",
103 G_CALLBACK(QtCamDevicePrivate::on_ready_for_capture_changed), d_ptr);
105 d_ptr->image = new QtCamImageMode(d_ptr, this);
106 d_ptr->video = new QtCamVideoMode(d_ptr, this);
108 d_ptr->notifications = new QtCamNotifications(this, this);
111 QtCamDevice::~QtCamDevice() {
114 d_ptr->image->deactivate();
115 d_ptr->video->deactivate();
117 delete d_ptr->image; d_ptr->image = 0;
118 delete d_ptr->video; d_ptr->video = 0;
120 delete d_ptr->propertySetter;
122 delete d_ptr->viewfinderFilters;
124 if (d_ptr->cameraBin) {
125 gst_object_unref(d_ptr->cameraBin);
128 delete d_ptr; d_ptr = 0;
131 bool QtCamDevice::setViewfinder(QtCamViewfinder *viewfinder) {
133 qWarning() << "QtCamDevice: pipeline must be stopped before setting a viewfinder";
137 if (d_ptr->viewfinder == viewfinder) {
142 qWarning() << "QtCamDevice: viewfinder cannot be unset.";
146 if (d_ptr->viewfinder) {
147 qWarning() << "QtCamDevice: viewfinder cannot be replaced.";
151 if (!viewfinder->setDevice(this)) {
155 d_ptr->viewfinder = viewfinder;
160 QtCamViewfinder *QtCamDevice::viewfinder() const {
161 return d_ptr->viewfinder;
164 bool QtCamDevice::start() {
166 qWarning() << "Pipeline must be stopped first because of an error.";
170 if (!d_ptr->cameraBin) {
171 qWarning() << "Missing camerabin";
175 if (!d_ptr->viewfinder) {
176 qWarning() << "Viewfinder not set";
184 if (!d_ptr->active) {
185 d_ptr->image->activate();
188 d_ptr->active->applySettings();
192 if (!d_ptr->setViewfinderSink()) {
196 GstStateChangeReturn err = gst_element_set_state(d_ptr->cameraBin, GST_STATE_PLAYING);
197 if (err == GST_STATE_CHANGE_FAILURE) {
198 qWarning() << "Failed to start camera pipeline";
202 // We need to wait for startup to complet. There's a race condition somewhere in the pipeline.
203 // If we set the scene mode to night and update the resolution while starting up
204 // then subdevsrc2 barfs:
205 // streaming task paused, reason not-negotiated (-4)
207 if (err != GST_STATE_CHANGE_ASYNC) {
211 if (gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE)
212 != GST_STATE_CHANGE_SUCCESS) {
213 // We are seriously screwed up :(
217 if (state != GST_STATE_PLAYING) {
218 // Huh ? Is this even possible ??
225 bool QtCamDevice::stop(bool force) {
226 if (!d_ptr->cameraBin) {
231 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
232 d_ptr->error = false;
234 d_ptr->viewfinder->stop();
240 gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE);
242 if (state == GST_STATE_NULL) {
253 // First we go to ready:
254 GstStateChangeReturn st = gst_element_set_state(d_ptr->cameraBin, GST_STATE_READY);
255 if (st != GST_STATE_CHANGE_FAILURE) {
257 d_ptr->listener->flushMessages();
261 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
263 d_ptr->viewfinder->stop();
268 bool QtCamDevice::isRunning() {
269 if (!d_ptr->cameraBin) {
274 GstStateChangeReturn err = gst_element_get_state(d_ptr->cameraBin,
275 &state, 0, GST_CLOCK_TIME_NONE);
277 if (err == GST_STATE_CHANGE_FAILURE || state != GST_STATE_PLAYING) {
284 bool QtCamDevice::isIdle() {
285 if (!d_ptr->cameraBin) {
289 gboolean idle = FALSE;
290 g_object_get(d_ptr->cameraBin, "idle", &idle, NULL);
295 QtCamImageMode *QtCamDevice::imageMode() const {
299 QtCamVideoMode *QtCamDevice::videoMode() const {
303 QtCamMode *QtCamDevice::activeMode() const {
304 return d_ptr->active;
307 QString QtCamDevice::name() const {
311 QVariant QtCamDevice::id() const {
315 QtCamConfig *QtCamDevice::config() const {
319 QtCamGStreamerMessageListener *QtCamDevice::listener() const {
320 return d_ptr->listener;
323 QtCamNotifications *QtCamDevice::notifications() const {
324 return d_ptr->notifications;
327 #include "moc_qtcamdevice.cpp"