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"
34 QtCamDevice::QtCamDevice(QtCamConfig *config, const QString& name,
35 const QVariant& id, QObject *parent) :
36 QObject(parent), d_ptr(new QtCamDevicePrivate) {
38 static gboolean register_copy = TRUE;
40 qt_cam_copy_register();
41 register_copy = FALSE;
49 d_ptr->cameraBin = gst_element_factory_make("camerabin2", "QtCameraCameraBin");
50 if (!d_ptr->cameraBin) {
51 qCritical() << "Failed to create camerabin";
55 d_ptr->createAndAddElement(d_ptr->conf->audioSource(), "audio-source", "QtCameraAudioSrc");
56 d_ptr->createAndAddVideoSource();
59 0x00000001 /* no-audio-conversion - Do not use audio conversion elements */
60 | 0x00000002 /* no-video-conversion - Do not use video conversion elements */
61 | 0x00000004 /* no-viewfinder-conversion - Do not use viewfinder conversion elements */
62 | 0x00000008; /* no-image-conversion - Do not use image conversion elements */
64 g_object_set(d_ptr->cameraBin, "flags", flags, NULL);
66 d_ptr->setAudioCaptureCaps();
68 // TODO: audio bitrate
69 // TODO: video bitrate
71 // TODO: custom properties for jifmux, mp4mux, audio encoder, video encoder, sink & video source
72 d_ptr->listener = new QtCamGStreamerMessageListener(gst_element_get_bus(d_ptr->cameraBin),
75 QObject::connect(d_ptr->listener, SIGNAL(error(const QString&, int, const QString&)),
76 this, SLOT(_d_error(const QString&, int, const QString&)));
77 QObject::connect(d_ptr->listener, SIGNAL(started()), this, SLOT(_d_started()));
78 QObject::connect(d_ptr->listener, SIGNAL(stopped()), this, SLOT(_d_stopped()));
79 QObject::connect(d_ptr->listener, SIGNAL(stopping()), this, SLOT(_d_stopping()));
81 g_signal_connect(d_ptr->cameraBin, "notify::idle",
82 G_CALLBACK(QtCamDevicePrivate::on_idle_changed), d_ptr);
84 g_signal_connect(d_ptr->wrapperVideoSource, "notify::ready-for-capture",
85 G_CALLBACK(QtCamDevicePrivate::on_ready_for_capture_changed), d_ptr);
87 d_ptr->image = new QtCamImageMode(d_ptr, this);
88 d_ptr->video = new QtCamVideoMode(d_ptr, this);
90 d_ptr->notifications = new QtCamNotifications(this, this);
93 QtCamDevice::~QtCamDevice() {
96 d_ptr->image->deactivate();
97 d_ptr->video->deactivate();
99 delete d_ptr->image; d_ptr->image = 0;
100 delete d_ptr->video; d_ptr->video = 0;
102 if (d_ptr->cameraBin) {
103 gst_object_unref(d_ptr->cameraBin);
106 delete d_ptr; d_ptr = 0;
109 bool QtCamDevice::setViewfinder(QtCamViewfinder *viewfinder) {
111 qWarning() << "QtCamDevice: pipeline must be stopped before setting a viewfinder";
115 if (d_ptr->viewfinder == viewfinder) {
120 qWarning() << "QtCamDevice: viewfinder cannot be unset.";
124 if (d_ptr->viewfinder) {
125 qWarning() << "QtCamDevice: viewfinder cannot be replaced.";
129 if (!viewfinder->setDevice(this)) {
133 d_ptr->viewfinder = viewfinder;
138 QtCamViewfinder *QtCamDevice::viewfinder() const {
139 return d_ptr->viewfinder;
142 bool QtCamDevice::start() {
144 qWarning() << "Pipeline must be stopped first because of an error.";
148 if (!d_ptr->cameraBin) {
149 qWarning() << "Missing camerabin";
153 if (!d_ptr->viewfinder) {
154 qWarning() << "Viewfinder not set";
162 if (!d_ptr->active) {
163 d_ptr->image->activate();
166 d_ptr->active->applySettings();
170 if (!d_ptr->setViewfinderSink()) {
174 GstStateChangeReturn err = gst_element_set_state(d_ptr->cameraBin, GST_STATE_PLAYING);
175 if (err == GST_STATE_CHANGE_FAILURE) {
176 qWarning() << "Failed to start camera pipeline";
180 // We need to wait for startup to complet. There's a race condition somewhere in the pipeline.
181 // If we set the scene mode to night and update the resolution while starting up
182 // then subdevsrc2 barfs:
183 // streaming task paused, reason not-negotiated (-4)
185 if (err != GST_STATE_CHANGE_ASYNC) {
189 if (gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE)
190 != GST_STATE_CHANGE_SUCCESS) {
191 // We are seriously screwed up :(
195 if (state != GST_STATE_PLAYING) {
196 // Huh ? Is this even possible ??
203 bool QtCamDevice::stop(bool force) {
204 if (!d_ptr->cameraBin) {
209 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
210 d_ptr->error = false;
212 d_ptr->viewfinder->stop();
218 gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE);
220 if (state == GST_STATE_NULL) {
231 // First we go to ready:
232 GstStateChangeReturn st = gst_element_set_state(d_ptr->cameraBin, GST_STATE_READY);
233 if (st != GST_STATE_CHANGE_FAILURE) {
235 d_ptr->listener->flushMessages();
239 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
241 d_ptr->viewfinder->stop();
246 bool QtCamDevice::isRunning() {
247 if (!d_ptr->cameraBin) {
252 GstStateChangeReturn err = gst_element_get_state(d_ptr->cameraBin,
253 &state, 0, GST_CLOCK_TIME_NONE);
255 if (err == GST_STATE_CHANGE_FAILURE || state != GST_STATE_PLAYING) {
262 bool QtCamDevice::isIdle() {
263 if (!d_ptr->cameraBin) {
267 gboolean idle = FALSE;
268 g_object_get(d_ptr->cameraBin, "idle", &idle, NULL);
273 QtCamImageMode *QtCamDevice::imageMode() const {
277 QtCamVideoMode *QtCamDevice::videoMode() const {
281 QtCamMode *QtCamDevice::activeMode() const {
282 return d_ptr->active;
285 QString QtCamDevice::name() const {
289 QVariant QtCamDevice::id() const {
293 QtCamConfig *QtCamDevice::config() const {
297 QtCamGStreamerMessageListener *QtCamDevice::listener() const {
298 return d_ptr->listener;
301 QtCamNotifications *QtCamDevice::notifications() const {
302 return d_ptr->notifications;
305 #include "moc_qtcamdevice.cpp"