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"
32 // TODO: we want the ability to change the image and video gep from the app.
34 QtCamDevice::QtCamDevice(QtCamConfig *config, const QString& name,
35 const QVariant& id, QObject *parent) :
36 QObject(parent), d_ptr(new QtCamDevicePrivate) {
43 d_ptr->cameraBin = gst_element_factory_make("camerabin2", "QtCameraCameraBin");
44 if (!d_ptr->cameraBin) {
45 qCritical() << "Failed to create camerabin";
49 d_ptr->createAndAddElement(d_ptr->conf->audioSource(), "audio-source", "QtCameraAudioSrc");
50 d_ptr->createAndAddVideoSource();
53 0x00000001 /* no-audio-conversion - Do not use audio conversion elements */
54 | 0x00000002 /* no-video-conversion - Do not use video conversion elements */
55 | 0x00000004 /* no-viewfinder-conversion - Do not use viewfinder conversion elements */
56 | 0x00000008; /* no-image-conversion - Do not use image conversion elements */
58 g_object_set(d_ptr->cameraBin, "flags", flags, NULL);
60 d_ptr->setAudioCaptureCaps();
62 // TODO: audio bitrate
63 // TODO: video bitrate
66 // TODO: custom properties for jifmux, mp4mux, audio encoder, video encoder, sink & video source
67 d_ptr->listener = new QtCamGStreamerMessageListener(gst_element_get_bus(d_ptr->cameraBin),
70 QObject::connect(d_ptr->listener, SIGNAL(error(const QString&, int, const QString&)),
71 this, SLOT(_d_error(const QString&, int, const QString&)));
72 QObject::connect(d_ptr->listener, SIGNAL(started()), this, SLOT(_d_started()));
73 QObject::connect(d_ptr->listener, SIGNAL(stopped()), this, SLOT(_d_stopped()));
74 QObject::connect(d_ptr->listener, SIGNAL(stopping()), this, SLOT(_d_stopping()));
76 g_signal_connect(d_ptr->cameraBin, "notify::idle",
77 G_CALLBACK(QtCamDevicePrivate::on_idle_changed), d_ptr);
79 g_signal_connect(d_ptr->wrapperVideoSource, "notify::ready-for-capture",
80 G_CALLBACK(QtCamDevicePrivate::on_ready_for_capture_changed), d_ptr);
82 d_ptr->image = new QtCamImageMode(d_ptr, this);
83 d_ptr->video = new QtCamVideoMode(d_ptr, this);
86 QtCamDevice::~QtCamDevice() {
89 d_ptr->image->deactivate();
90 d_ptr->video->deactivate();
92 delete d_ptr->image; d_ptr->image = 0;
93 delete d_ptr->video; d_ptr->video = 0;
94 delete d_ptr; d_ptr = 0;
97 bool QtCamDevice::setViewfinder(QtCamViewfinder *viewfinder) {
99 qWarning() << "QtCamDevice: pipeline must be stopped before setting a viewfinder";
103 if (d_ptr->viewfinder == viewfinder) {
108 qWarning() << "QtCamDevice: viewfinder cannot be unset.";
112 if (d_ptr->viewfinder) {
113 qWarning() << "QtCamDevice: viewfinder cannot be replaced.";
117 if (!viewfinder->setDevice(this)) {
121 d_ptr->viewfinder = viewfinder;
126 bool QtCamDevice::start() {
128 qWarning() << "Pipeline must be stopped first because of an error.";
132 if (!d_ptr->cameraBin) {
133 qWarning() << "Missing camerabin";
137 if (!d_ptr->viewfinder) {
138 qWarning() << "Viewfinder not set";
146 if (!d_ptr->active) {
147 d_ptr->image->activate();
150 d_ptr->active->applySettings();
154 if (!d_ptr->setViewfinderSink()) {
158 GstStateChangeReturn err = gst_element_set_state(d_ptr->cameraBin, GST_STATE_PLAYING);
159 if (err == GST_STATE_CHANGE_FAILURE) {
160 qWarning() << "Failed to start camera pipeline";
164 // We need to wait for startup to complet. There's a race condition somewhere in the pipeline.
165 // If we set the scene mode to night and update the resolution while starting up
166 // then subdevsrc2 barfs:
167 // streaming task paused, reason not-negotiated (-4)
169 if (err != GST_STATE_CHANGE_ASYNC) {
173 if (gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE)
174 != GST_STATE_CHANGE_SUCCESS) {
175 // We are seriously screwed up :(
179 if (state != GST_STATE_PLAYING) {
180 // Huh ? Is this even possible ??
187 bool QtCamDevice::stop() {
188 if (!d_ptr->cameraBin) {
193 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
194 d_ptr->error = false;
199 gst_element_get_state(d_ptr->cameraBin, &state, 0, GST_CLOCK_TIME_NONE);
201 if (state == GST_STATE_NULL) {
210 d_ptr->viewfinder->stop();
212 // First we go to ready:
213 GstStateChangeReturn st = gst_element_set_state(d_ptr->cameraBin, GST_STATE_READY);
214 if (st != GST_STATE_CHANGE_FAILURE) {
216 d_ptr->listener->flushMessages();
220 gst_element_set_state(d_ptr->cameraBin, GST_STATE_NULL);
225 bool QtCamDevice::isRunning() {
226 if (!d_ptr->cameraBin) {
231 GstStateChangeReturn err = gst_element_get_state(d_ptr->cameraBin,
232 &state, 0, GST_CLOCK_TIME_NONE);
234 if (err == GST_STATE_CHANGE_FAILURE || state != GST_STATE_PLAYING) {
241 bool QtCamDevice::isIdle() {
242 if (!d_ptr->cameraBin) {
246 gboolean idle = FALSE;
247 g_object_get(d_ptr->cameraBin, "idle", &idle, NULL);
252 QtCamImageMode *QtCamDevice::imageMode() const {
256 QtCamVideoMode *QtCamDevice::videoMode() const {
260 QtCamMode *QtCamDevice::activeMode() const {
261 return d_ptr->active;
264 QString QtCamDevice::name() const {
268 QVariant QtCamDevice::id() const {
272 QtCamConfig *QtCamDevice::config() const {
276 QtCamGStreamerMessageListener *QtCamDevice::listener() const {
277 return d_ptr->listener;
280 #include "moc_qtcamdevice.cpp"