Chiebot-Mirror
/
opencv
mirror of https://github.com/opencv/opencv.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #5202 from ilya-lavrenov:gstreamer-v4l2

Browse Source
pull/5403/head
Alexander Alekhin 9 years ago
parent 134a3f165d 75fcedf0ed
commit 60a689d27c
3 changed files with 139 additions and 69 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 6
      cmake/OpenCVFindLibsVideo.cmake
  2. 6
      modules/highgui/src/cap.cpp
  3. 196
      modules/highgui/src/cap_gstreamer.cpp

6
cmake/OpenCVFindLibsVideo.cmake
Unescape View File

@ -12,8 +12,8 @@ endif(WITH_VFW)
# --- GStreamer ---
ocv_clear_vars(HAVE_GSTREAMER)
# try to find gstreamer 1.x first
if(WITH_GSTREAMER)
# try to find gstreamer 1.x first if 0.10 was not requested
if(WITH_GSTREAMER AND NOT WITH_GSTREAMER_0_10)
CHECK_MODULE(gstreamer-base-1.0 HAVE_GSTREAMER_BASE)
CHECK_MODULE(gstreamer-video-1.0 HAVE_GSTREAMER_VIDEO)
CHECK_MODULE(gstreamer-app-1.0 HAVE_GSTREAMER_APP)
@ -29,7 +29,7 @@ if(WITH_GSTREAMER)
set(GSTREAMER_PBUTILS_VERSION ${ALIASOF_gstreamer-pbutils-1.0_VERSION})
endif()
endif(WITH_GSTREAMER)
endif()
# gstreamer support was requested but could not find gstreamer 1.x,
# so fallback/try to find gstreamer 0.10

6
modules/highgui/src/cap.cpp
Unescape View File

@ -238,10 +238,12 @@ CV_IMPL CvCapture * cvCreateCameraCapture (int index)
#endif
#ifdef HAVE_GSTREAMER
capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2, 0);
capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2,
reinterpret_cast<char *>(index));
if (capture)
return capture;
capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L, 0);
capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L,
reinterpret_cast<char *>(index));
if (capture)
return capture;
#endif

196
modules/highgui/src/cap_gstreamer.cpp
Unescape View File

@ -75,10 +75,13 @@
#if GST_VERSION_MAJOR == 0
#define COLOR_ELEM "ffmpegcolorspace"
#define COLOR_ELEM_NAME "ffmpegcsp"
#elif FULL_GST_VERSION < VERSION_NUM(1,5,0)
#define COLOR_ELEM "videoconvert"
#define COLOR_ELEM_NAME COLOR_ELEM
#else
#define COLOR_ELEM "autovideoconvert"
#define COLOR_ELEM_NAME COLOR_ELEM
#endif
void toFraction(double decimal, double &numerator, double &denominator);
@ -142,6 +145,7 @@ protected:
gpointer data);
GstElement* pipeline;
GstElement* uridecodebin;
GstElement* v4l2src;
GstElement* color;
GstElement* sink;
#if GST_VERSION_MAJOR > 0
@ -165,6 +169,7 @@ void CvCapture_GStreamer::init()
{
pipeline = NULL;
uridecodebin = NULL;
v4l2src = NULL;
color = NULL;
sink = NULL;
#if GST_VERSION_MAJOR > 0
@ -371,9 +376,7 @@ void CvCapture_GStreamer::startPipeline()
if (status == GST_STATE_CHANGE_ASYNC)
{
// wait for status update
GstState st1;
GstState st2;
status = gst_element_get_state(pipeline, &st1, &st2, GST_CLOCK_TIME_NONE);
status = gst_element_get_state(pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);
}
if (status == GST_STATE_CHANGE_FAILURE)
{
@ -568,21 +571,39 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
GstElementFactory * testfac;
GstStateChangeReturn status;
if (type == CV_CAP_GSTREAMER_V4L){
int cameraID = -1;
if (type == CV_CAP_GSTREAMER_V4L ||
type == CV_CAP_GSTREAMER_V4L2)
{
cameraID = static_cast<int>(reinterpret_cast<intptr_t>(filename));
}
std::stringstream stdstream;
std::string stdfilename;
if (type == CV_CAP_GSTREAMER_V4L)
{
testfac = gst_element_factory_find("v4lsrc");
if (!testfac){
return false;
}
g_object_unref(G_OBJECT(testfac));
filename = "v4lsrc ! "COLOR_ELEM" ! appsink";
stdstream << "v4lsrc device=/dev/video" << cameraID << " ! " << COLOR_ELEM << " ! appsink";
stdfilename = stdstream.str();
filename = stdfilename.c_str();
}
if (type == CV_CAP_GSTREAMER_V4L2){
else if (type == CV_CAP_GSTREAMER_V4L2)
{
testfac = gst_element_factory_find("v4l2src");
if (!testfac){
return false;
}
g_object_unref(G_OBJECT(testfac));
filename = "v4l2src ! "COLOR_ELEM" ! appsink";
stdstream << "v4l2src device=/dev/video" << cameraID << " ! " << COLOR_ELEM << " ! appsink";
stdfilename = stdstream.str();
filename = stdfilename.c_str();
}
@ -620,7 +641,9 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
stream = true;
manualpipeline = true;
}
} else {
}
else
{
stream = true;
uri = g_strdup(filename);
}
@ -641,68 +664,86 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
uridecodebin = gst_element_make_from_uri(GST_URI_SRC, uri, "src", NULL);
#endif
element_from_uri = true;
}else{
}
else
{
uridecodebin = gst_element_factory_make("uridecodebin", NULL);
g_object_set(G_OBJECT(uridecodebin), "uri", uri, NULL);
}
g_free(protocol);
if(!uridecodebin) {
if(!uridecodebin)
{
//fprintf(stderr, "GStreamer: Error opening bin: %s\n", err->message);
close();
return false;
}
}
if(manualpipeline)
if (manualpipeline)
{
GstIterator *it = NULL;
#if GST_VERSION_MAJOR == 0
it = gst_bin_iterate_sinks(GST_BIN(uridecodebin));
if(gst_iterator_next(it, (gpointer *)&sink) != GST_ITERATOR_OK) {
CV_ERROR(CV_StsError, "GStreamer: cannot find appsink in manual pipeline\n");
return false;
}
#else
it = gst_bin_iterate_sinks (GST_BIN(uridecodebin));
GstIterator *it = gst_bin_iterate_elements(GST_BIN(uridecodebin));
gboolean done = FALSE;
GstElement *element = NULL;
gboolean done = false;
gchar* name = NULL;
#if GST_VERSION_MAJOR > 0
GValue value = G_VALUE_INIT;
#endif
while (!done) {
switch (gst_iterator_next (it, &value)) {
while (!done)
{
#if GST_VERSION_MAJOR > 0
switch (gst_iterator_next (it, &value))
{
case GST_ITERATOR_OK:
element = GST_ELEMENT (g_value_get_object (&value));
name = gst_element_get_name(element);
if (name){
if(strstr(name, "opencvsink") != NULL || strstr(name, "appsink") != NULL) {
sink = GST_ELEMENT ( gst_object_ref (element) );
done = TRUE;
element = GST_ELEMENT (g_value_get_object (&value));
#else
switch (gst_iterator_next (it, (gpointer *)&element))
{
case GST_ITERATOR_OK:
#endif
name = gst_element_get_name(element);
if (name)
{
if (strstr(name, "opencvsink") != NULL || strstr(name, "appsink") != NULL)
{
sink = GST_ELEMENT ( gst_object_ref (element) );
}
else if (strstr(name, COLOR_ELEM_NAME) != NULL)
{
color = GST_ELEMENT ( gst_object_ref (element) );
}
else if (strstr(name, "v4l") != NULL)
{
v4l2src = GST_ELEMENT ( gst_object_ref (element) );
}
g_free(name);
done = sink && color && v4l2src;
}
g_free(name);
}
g_value_unset (&value);
#if GST_VERSION_MAJOR > 0
g_value_unset (&value);
#endif
break;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (it);
break;
gst_iterator_resync (it);
break;
case GST_ITERATOR_ERROR:
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
done = TRUE;
break;
}
}
gst_iterator_free (it);
if (!sink){
if (!sink)
{
CV_ERROR(CV_StsError, "GStreamer: cannot find appsink in manual pipeline\n");
return false;
}
#endif
pipeline = uridecodebin;
}
else
@ -715,18 +756,23 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
gst_bin_add_many(GST_BIN(pipeline), uridecodebin, color, sink, NULL);
if(element_from_uri) {
if(!gst_element_link(uridecodebin, color)) {
if(element_from_uri)
{
if(!gst_element_link(uridecodebin, color))
{
CV_ERROR(CV_StsError, "GStreamer: cannot link color -> sink\n");
gst_object_unref(pipeline);
pipeline = NULL;
return false;
}
}else{
}
else
{
g_signal_connect(uridecodebin, "pad-added", G_CALLBACK(newPad), color);
}
if(!gst_element_link(color, sink)) {
if(!gst_element_link(color, sink))
{
CV_ERROR(CV_StsError, "GStreamer: cannot link color -> sink\n");
gst_object_unref(pipeline);
pipeline = NULL;
@ -754,16 +800,13 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
gst_app_sink_set_caps(GST_APP_SINK(sink), caps);
gst_caps_unref(caps);
// For video files only: set pipeline to PAUSED state to get its duration
if (file)
{
status = gst_element_set_state(GST_ELEMENT(pipeline), GST_STATE_PAUSED);
status = gst_element_set_state(GST_ELEMENT(pipeline),
file ? GST_STATE_PAUSED : GST_STATE_PLAYING);
if (status == GST_STATE_CHANGE_ASYNC)
{
// wait for status update
GstState st1;
GstState st2;
status = gst_element_get_state(pipeline, &st1, &st2, GST_CLOCK_TIME_NONE);
status = gst_element_get_state(pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);
}
if (status == GST_STATE_CHANGE_FAILURE)
{
@ -814,14 +857,9 @@ bool CvCapture_GStreamer::open( int type, const char* filename )
fps = (double)num/(double)denom;
// GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline");
}
else
{
duration = -1;
width = -1;
height = -1;
fps = -1;
// GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(pipeline), GST_DEBUG_GRAPH_SHOW_ALL, "pipeline")
stopPipeline();
}
__END__;
@ -852,7 +890,7 @@ double CvCapture_GStreamer::getProperty( int propId )
if(!pipeline) {
CV_WARN("GStreamer: no pipeline");
return false;
return 0;
}
switch(propId) {
@ -861,7 +899,7 @@ double CvCapture_GStreamer::getProperty( int propId )
status = gst_element_query_position(sink, FORMAT, &value);
if(!status) {
CV_WARN("GStreamer: unable to query position of stream");
return false;
return 0;
}
return value * 1e-6; // nano seconds to milli seconds
case CV_CAP_PROP_POS_FRAMES:
@ -869,7 +907,7 @@ double CvCapture_GStreamer::getProperty( int propId )
status = gst_element_query_position(sink, FORMAT, &value);
if(!status) {
CV_WARN("GStreamer: unable to query position of stream");
return false;
return 0;
}
return value;
case CV_CAP_PROP_POS_AVI_RATIO:
@ -877,7 +915,7 @@ double CvCapture_GStreamer::getProperty( int propId )
status = gst_element_query_position(sink, FORMAT, &value);
if(!status) {
CV_WARN("GStreamer: unable to query position of stream");
return false;
return 0;
}
return ((double) value) / GST_FORMAT_PERCENT_MAX;
case CV_CAP_PROP_FRAME_WIDTH:
@ -896,6 +934,21 @@ double CvCapture_GStreamer::getProperty( int propId )
case CV_CAP_PROP_CONTRAST:
case CV_CAP_PROP_SATURATION:
case CV_CAP_PROP_HUE:
if (v4l2src)
{
const gchar * propName =
propId == CV_CAP_PROP_BRIGHTNESS ? "brightness" :
propId == CV_CAP_PROP_CONTRAST ? "contrast" :
propId == CV_CAP_PROP_SATURATION ? "saturation" :
propId == CV_CAP_PROP_HUE ? "hue" : NULL;
if (propName)
{
gint32 value32 = 0;
g_object_get(G_OBJECT(v4l2src), propName, &value32, NULL);
return value32;
}
}
case CV_CAP_PROP_GAIN:
case CV_CAP_PROP_CONVERT_RGB:
break;
@ -912,7 +965,7 @@ double CvCapture_GStreamer::getProperty( int propId )
#undef FORMAT
return false;
return 0;
}
/*!
@ -991,6 +1044,21 @@ bool CvCapture_GStreamer::setProperty( int propId, double value )
case CV_CAP_PROP_CONTRAST:
case CV_CAP_PROP_SATURATION:
case CV_CAP_PROP_HUE:
if (v4l2src)
{
const gchar * propName =
propId == CV_CAP_PROP_BRIGHTNESS ? "brightness" :
propId == CV_CAP_PROP_CONTRAST ? "contrast" :
propId == CV_CAP_PROP_SATURATION ? "saturation" :
propId == CV_CAP_PROP_HUE ? "hue" : NULL;
if (propName)
{
gint32 value32 = cv::saturate_cast<gint32>(value);
g_object_set(G_OBJECT(v4l2src), propName, &value32, NULL);
return true;
}
}
case CV_CAP_PROP_GAIN:
case CV_CAP_PROP_CONVERT_RGB:
break;

Write Preview
Loading…
Cancel
Save