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39
40#include "camerabinlocks.h"
41#include "camerabinsession.h"
42#include "camerabinfocus.h"
43#include "camerabinimageprocessing.h"
44
45#include <QtCore/qcoreevent.h>
46
47#include <gst/interfaces/photography.h>
48
49#include <QDebug>
50
51QT_BEGIN_NAMESPACE
52
53CameraBinLocks::CameraBinLocks(CameraBinSession *session)
54 :QCameraLocksControl(session),
55 m_session(session),
56 m_focus(m_session->cameraFocusControl())
57{
58 connect(sender: m_focus, SIGNAL(_q_focusStatusChanged(QCamera::LockStatus,QCamera::LockChangeReason)),
59 receiver: this, SLOT(updateFocusStatus(QCamera::LockStatus,QCamera::LockChangeReason)));
60}
61
62CameraBinLocks::~CameraBinLocks()
63{
64}
65
66QCamera::LockTypes CameraBinLocks::supportedLocks() const
67{
68 QCamera::LockTypes locks = QCamera::LockFocus;
69
70#if GST_CHECK_VERSION(1, 2, 0)
71 if (GstPhotography *photography = m_session->photography()) {
72 if (gst_photography_get_capabilities(photo: photography) & GST_PHOTOGRAPHY_CAPS_WB_MODE)
73 locks |= QCamera::LockWhiteBalance;
74
75 if (GstElement *source = m_session->cameraSource()) {
76 if (g_object_class_find_property(
77 G_OBJECT_GET_CLASS(source), property_name: "exposure-mode")) {
78 locks |= QCamera::LockExposure;
79 }
80 }
81 }
82#endif
83
84 return locks;
85}
86
87QCamera::LockStatus CameraBinLocks::lockStatus(QCamera::LockType lock) const
88{
89 switch (lock) {
90 case QCamera::LockFocus:
91 return m_focus->focusStatus();
92#if GST_CHECK_VERSION(1, 2, 0)
93 case QCamera::LockExposure:
94 if (m_pendingLocks & QCamera::LockExposure)
95 return QCamera::Searching;
96 return isExposureLocked() ? QCamera::Locked : QCamera::Unlocked;
97 case QCamera::LockWhiteBalance:
98 if (m_pendingLocks & QCamera::LockWhiteBalance)
99 return QCamera::Searching;
100 return isWhiteBalanceLocked() ? QCamera::Locked : QCamera::Unlocked;
101#endif
102 default:
103 return QCamera::Unlocked;
104 }
105}
106
107void CameraBinLocks::searchAndLock(QCamera::LockTypes locks)
108{
109 m_pendingLocks &= ~locks;
110
111 if (locks & QCamera::LockFocus) {
112 m_pendingLocks |= QCamera::LockFocus;
113 m_focus->_q_startFocusing();
114 }
115#if GST_CHECK_VERSION(1, 2, 0)
116 if (!m_pendingLocks)
117 m_lockTimer.stop();
118
119 if (locks & QCamera::LockExposure) {
120 if (isExposureLocked()) {
121 unlockExposure(status: QCamera::Searching, reason: QCamera::UserRequest);
122 m_pendingLocks |= QCamera::LockExposure;
123 m_lockTimer.start(msec: 1000, obj: this);
124 } else {
125 lockExposure(reason: QCamera::UserRequest);
126 }
127 }
128 if (locks & QCamera::LockWhiteBalance) {
129 if (isWhiteBalanceLocked()) {
130 unlockWhiteBalance(status: QCamera::Searching, reason: QCamera::UserRequest);
131 m_pendingLocks |= QCamera::LockWhiteBalance;
132 m_lockTimer.start(msec: 1000, obj: this);
133 } else {
134 lockWhiteBalance(reason: QCamera::UserRequest);
135 }
136 }
137#endif
138
139}
140
141void CameraBinLocks::unlock(QCamera::LockTypes locks)
142{
143 m_pendingLocks &= ~locks;
144
145 if (locks & QCamera::LockFocus)
146 m_focus->_q_stopFocusing();
147
148#if GST_CHECK_VERSION(1, 2, 0)
149 if (!m_pendingLocks)
150 m_lockTimer.stop();
151
152 if (locks & QCamera::LockExposure)
153 unlockExposure(status: QCamera::Unlocked, reason: QCamera::UserRequest);
154 if (locks & QCamera::LockWhiteBalance)
155 unlockWhiteBalance(status: QCamera::Unlocked, reason: QCamera::UserRequest);
156#endif
157}
158
159void CameraBinLocks::updateFocusStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason)
160{
161 if (status != QCamera::Searching)
162 m_pendingLocks &= ~QCamera::LockFocus;
163
164#if GST_CHECK_VERSION(1, 2, 0)
165 if (status == QCamera::Locked && !m_lockTimer.isActive()) {
166 if (m_pendingLocks & QCamera::LockExposure)
167 lockExposure(reason: QCamera::LockAcquired);
168 if (m_pendingLocks & QCamera::LockWhiteBalance)
169 lockWhiteBalance(reason: QCamera::LockAcquired);
170 }
171#endif
172 emit lockStatusChanged(type: QCamera::LockFocus, status, reason);
173}
174
175#if GST_CHECK_VERSION(1, 2, 0)
176
177void CameraBinLocks::timerEvent(QTimerEvent *event)
178{
179 if (event->timerId() != m_lockTimer.timerId())
180 return QCameraLocksControl::timerEvent(event);
181
182 m_lockTimer.stop();
183
184 if (!(m_pendingLocks & QCamera::LockFocus)) {
185 if (m_pendingLocks & QCamera::LockExposure)
186 lockExposure(reason: QCamera::LockAcquired);
187 if (m_pendingLocks & QCamera::LockWhiteBalance)
188 lockWhiteBalance(reason: QCamera::LockAcquired);
189 }
190}
191
192bool CameraBinLocks::isExposureLocked() const
193{
194 if (GstElement *source = m_session->cameraSource()) {
195 GstPhotographyExposureMode exposureMode = GST_PHOTOGRAPHY_EXPOSURE_MODE_AUTO;
196 g_object_get (G_OBJECT(source), first_property_name: "exposure-mode", &exposureMode, NULL);
197 return exposureMode == GST_PHOTOGRAPHY_EXPOSURE_MODE_MANUAL;
198 } else {
199 return false;
200 }
201}
202
203void CameraBinLocks::lockExposure(QCamera::LockChangeReason reason)
204{
205 GstElement *source = m_session->cameraSource();
206 if (!source)
207 return;
208
209 m_pendingLocks &= ~QCamera::LockExposure;
210 g_object_set(
211 G_OBJECT(source),
212 first_property_name: "exposure-mode",
213 GST_PHOTOGRAPHY_EXPOSURE_MODE_MANUAL,
214 NULL);
215 emit lockStatusChanged(type: QCamera::LockExposure, status: QCamera::Locked, reason);
216}
217
218void CameraBinLocks::unlockExposure(QCamera::LockStatus status, QCamera::LockChangeReason reason)
219{
220 GstElement *source = m_session->cameraSource();
221 if (!source)
222 return;
223
224 g_object_set(
225 G_OBJECT(source),
226 first_property_name: "exposure-mode",
227 GST_PHOTOGRAPHY_EXPOSURE_MODE_AUTO,
228 NULL);
229 emit lockStatusChanged(type: QCamera::LockExposure, status, reason);
230}
231
232bool CameraBinLocks::isWhiteBalanceLocked() const
233{
234 if (GstPhotography *photography = m_session->photography()) {
235 GstPhotographyWhiteBalanceMode whiteBalanceMode;
236 return gst_photography_get_white_balance_mode(photo: photography, wb_mode: &whiteBalanceMode)
237 && whiteBalanceMode == GST_PHOTOGRAPHY_WB_MODE_MANUAL;
238 } else {
239 return false;
240 }
241}
242
243void CameraBinLocks::lockWhiteBalance(QCamera::LockChangeReason reason)
244{
245 m_pendingLocks &= ~QCamera::LockWhiteBalance;
246 m_session->imageProcessingControl()->lockWhiteBalance();
247 emit lockStatusChanged(type: QCamera::LockWhiteBalance, status: QCamera::Locked, reason);
248}
249
250void CameraBinLocks::unlockWhiteBalance(
251 QCamera::LockStatus status, QCamera::LockChangeReason reason)
252{
253 m_session->imageProcessingControl()->lockWhiteBalance();
254 emit lockStatusChanged(type: QCamera::LockWhiteBalance, status, reason);
255}
256
257#endif
258
259QT_END_NAMESPACE
260

source code of qtmultimedia/src/plugins/gstreamer/camerabin/camerabinlocks.cpp