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Implement encoder settings in camerabin backend.

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This is not comprehensive since different encoders have different names
and representations for many settings, but it should cover bit rate for
most encoders, and quality and encodingMode for a number of common
encoders.

Change-Id: I0ba4e70c2f234e0deaaa02bdecc0f5198122c1e9
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
This commit is contained in:
Andrew den Exter
2014-07-17 06:34:30 +00:00
committed by Yoann Lopes
parent 9c020cd39a
commit 55ce8ed072
6 changed files with 111 additions and 0 deletions
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37
src/plugins/gstreamer/camerabin/camerabinsession.cpp
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@@ -133,6 +133,7 @@ CameraBinSession::CameraBinSession(GstElementFactory *sourceFactory, QObject *pa
m_capsFilter(0),
m_fileSink(0),
m_audioEncoder(0),
m_videoEncoder(0),
m_muxer(0)
{
if (m_sourceFactory)
@@ -140,6 +141,8 @@ CameraBinSession::CameraBinSession(GstElementFactory *sourceFactory, QObject *pa
m_camerabin = gst_element_factory_make("camerabin2", "camerabin2");
g_signal_connect(G_OBJECT(m_camerabin), "notify::idle", G_CALLBACK(updateBusyStatus), this);
g_signal_connect(G_OBJECT(m_camerabin), "element-added", G_CALLBACK(elementAdded), this);
g_signal_connect(G_OBJECT(m_camerabin), "element-removed", G_CALLBACK(elementRemoved), this);
qt_gst_object_ref_sink(m_camerabin);
m_bus = gst_element_get_bus(m_camerabin);
@@ -344,6 +347,9 @@ void CameraBinSession::setupCaptureResolution()
} else {
g_object_set(m_camerabin, VIEWFINDER_CAPS_PROPERTY, NULL, NULL);
}
if (m_videoEncoder)
m_videoEncodeControl->applySettings(m_videoEncoder);
}
void CameraBinSession::setAudioCaptureCaps()
@@ -370,6 +376,9 @@ void CameraBinSession::setAudioCaptureCaps()
GstCaps *caps = gst_caps_new_full(structure, NULL);
g_object_set(G_OBJECT(m_camerabin), AUDIO_CAPTURE_CAPS_PROPERTY, caps, NULL);
gst_caps_unref(caps);
if (m_audioEncoder)
m_audioEncodeControl->applySettings(m_audioEncoder);
}
GstElement *CameraBinSession::buildCameraSource()
@@ -1293,4 +1302,32 @@ QList<QSize> CameraBinSession::supportedResolutions(QPair<int,int> rate,
return res;
}
void CameraBinSession::elementAdded(GstBin *, GstElement *element, CameraBinSession *session)
{
GstElementFactory *factory = gst_element_get_factory(element);
if (GST_IS_BIN(element)) {
g_signal_connect(G_OBJECT(element), "element-added", G_CALLBACK(elementAdded), session);
g_signal_connect(G_OBJECT(element), "element-removed", G_CALLBACK(elementRemoved), session);
} else if (!factory) {
// no-op
} else if (gst_element_factory_list_is_type(factory, GST_ELEMENT_FACTORY_TYPE_AUDIO_ENCODER)) {
session->m_audioEncoder = element;
session->m_audioEncodeControl->applySettings(element);
} else if (gst_element_factory_list_is_type(factory, GST_ELEMENT_FACTORY_TYPE_VIDEO_ENCODER)) {
session->m_videoEncoder = element;
session->m_videoEncodeControl->applySettings(element);
}
}
void CameraBinSession::elementRemoved(GstBin *, GstElement *element, CameraBinSession *session)
{
if (element == session->m_audioEncoder)
session->m_audioEncoder = 0;
else if (element == session->m_videoEncoder)
session->m_videoEncoder = 0;
}
QT_END_NAMESPACE