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/****************************************************************************
*
* (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
/**
* @file
* @brief QGC Video Streaming Initialization
* @author Gus Grubba <mavlink@grubba.com>
*/
#include <QtQml>
#include <QDebug>
#if defined(QGC_GST_STREAMING)
#include <gst/gst.h>
#ifdef __android__
//#define ANDDROID_GST_DEBUG
#endif
#endif
#include "VideoStreaming.h"
#include "VideoItem.h"
#include "VideoSurface.h"
#if defined(QGC_GST_STREAMING)
G_BEGIN_DECLS
// Our own plugin
GST_PLUGIN_STATIC_DECLARE(QGC_VIDEOSINK_PLUGIN);
// The static plugins we use
#if defined(__mobile__)
GST_PLUGIN_STATIC_DECLARE(coreelements);
GST_PLUGIN_STATIC_DECLARE(libav);
GST_PLUGIN_STATIC_DECLARE(rtp);
GST_PLUGIN_STATIC_DECLARE(rtsp);
GST_PLUGIN_STATIC_DECLARE(udp);
GST_PLUGIN_STATIC_DECLARE(videoparsersbad);
GST_PLUGIN_STATIC_DECLARE(x264);
GST_PLUGIN_STATIC_DECLARE(rtpmanager);
GST_PLUGIN_STATIC_DECLARE(isomp4);
GST_PLUGIN_STATIC_DECLARE(matroska);
#endif
G_END_DECLS
#endif
#if defined(QGC_GST_STREAMING)
#if (defined(__macos__) && defined(QGC_INSTALL_RELEASE)) || defined(Q_OS_WIN)
static void qgcputenv(const QString& key, const QString& root, const QString& path)
{
QString value = root + path;
qputenv(key.toStdString().c_str(), QByteArray(value.toStdString().c_str()));
}
#endif
#endif
#ifdef ANDDROID_GST_DEBUG
// Redirects stdio and stderr to logcat
#include <unistd.h>
#include <pthread.h>
#include <android/log.h>
static int pfd[2];
static pthread_t thr;
static const char *tag = "myapp";
static void *thread_func(void*)
{
ssize_t rdsz;
char buf[128];
while((rdsz = read(pfd[0], buf, sizeof buf - 1)) > 0) {
if(buf[rdsz - 1] == '\n') --rdsz;
buf[rdsz] = 0; /* add null-terminator */
__android_log_write(ANDROID_LOG_DEBUG, tag, buf);
}
return 0;
}
int start_logger(const char *app_name)
{
tag = app_name;
/* make stdout line-buffered and stderr unbuffered */
setvbuf(stdout, 0, _IOLBF, 0);
setvbuf(stderr, 0, _IONBF, 0);
/* create the pipe and redirect stdout and stderr */
pipe(pfd);
dup2(pfd[1], 1);
dup2(pfd[1], 2);
/* spawn the logging thread */
if(pthread_create(&thr, 0, thread_func, 0) == -1)
return -1;
pthread_detach(thr);
return 0;
}
#endif
void initializeVideoStreaming(int &argc, char* argv[], char* logpath, char* debuglevel)
{
#if defined(QGC_GST_STREAMING)
#ifdef __macos__
#ifdef QGC_INSTALL_RELEASE
QString currentDir = QCoreApplication::applicationDirPath();
qgcputenv("GST_PLUGIN_SCANNER", currentDir, "/../Frameworks/GStreamer.framework/Versions/1.0/libexec/gstreamer-1.0/gst-plugin-scanner");
qgcputenv("GTK_PATH", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current");
qgcputenv("GIO_EXTRA_MODULES", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current/lib/gio/modules");
qgcputenv("GST_PLUGIN_SYSTEM_PATH_1_0", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current/lib/gstreamer-1.0");
qgcputenv("GST_PLUGIN_SYSTEM_PATH", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current/lib/gstreamer-1.0");
qgcputenv("GST_PLUGIN_PATH_1_0", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current/lib/gstreamer-1.0");
qgcputenv("GST_PLUGIN_PATH", currentDir, "/../Frameworks/GStreamer.framework/Versions/Current/lib/gstreamer-1.0");
#endif
#elif defined(Q_OS_WIN)
QString currentDir = QCoreApplication::applicationDirPath();
qgcputenv("GST_PLUGIN_PATH", currentDir, "/gstreamer-plugins");
#endif
// Initialize GStreamer
#if !defined(__ios__)
if (logpath) {
if (debuglevel) {
qputenv("GST_DEBUG", debuglevel);
}
qputenv("GST_DEBUG_NO_COLOR", "1");
qputenv("GST_DEBUG_FILE", QString("%1/%2").arg(logpath).arg("gstreamer-log.txt").toUtf8());
qputenv("GST_DEBUG_DUMP_DOT_DIR", logpath);
}
#endif
GError* error = nullptr;
if (!gst_init_check(&argc, &argv, &error)) {
qCritical() << "gst_init_check() failed: " << error->message;
g_error_free(error);
}
// Our own plugin
GST_PLUGIN_STATIC_REGISTER(QGC_VIDEOSINK_PLUGIN);
// The static plugins we use
#if defined(__mobile__) && !defined(__macos__)
GST_PLUGIN_STATIC_REGISTER(coreelements);
GST_PLUGIN_STATIC_REGISTER(libav);
GST_PLUGIN_STATIC_REGISTER(rtp);
GST_PLUGIN_STATIC_REGISTER(rtsp);
GST_PLUGIN_STATIC_REGISTER(udp);
GST_PLUGIN_STATIC_REGISTER(videoparsersbad);
GST_PLUGIN_STATIC_REGISTER(x264);
GST_PLUGIN_STATIC_REGISTER(rtpmanager);
GST_PLUGIN_STATIC_REGISTER(isomp4);
GST_PLUGIN_STATIC_REGISTER(matroska);
#endif
#else
Q_UNUSED(argc);
Q_UNUSED(argv);
Q_UNUSED(logpath);
Q_UNUSED(debuglevel);
#endif
qmlRegisterType<VideoItem> ("QGroundControl.QgcQtGStreamer", 1, 0, "VideoItem");
qmlRegisterUncreatableType<VideoSurface>("QGroundControl.QgcQtGStreamer", 1, 0, "VideoSurface", QStringLiteral("VideoSurface from QML is not supported"));
}
void shutdownVideoStreaming()
{
/* From: http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-Gst.html#gst-deinit
*
* "It is normally not needed to call this function in a normal application as the resources will automatically
* be freed when the program terminates. This function is therefore mostly used by testsuites and other memory
* profiling tools."
*
* It's causing a hang on exit. It hangs while deleting some thread.
*
#if defined(QGC_GST_STREAMING)
gst_deinit();
#endif
*/
}