VideoStreaming.cc 6.02 KB
Newer Older
1
/****************************************************************************
2 3 4 5 6 7 8
 *
 *   (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.
 *
 ****************************************************************************/
9 10 11 12 13 14 15 16 17 18 19 20 21


/**
 * @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>
22 23 24
#ifdef __android__
//#define ANDDROID_GST_DEBUG
#endif
25 26 27 28 29 30 31 32 33
#endif

#include "VideoStreaming.h"
#include "VideoItem.h"
#include "VideoSurface.h"

#if defined(QGC_GST_STREAMING)
    G_BEGIN_DECLS
    // Our own plugin
34
    GST_PLUGIN_STATIC_DECLARE(QGC_VIDEOSINK_PLUGIN);
35 36 37 38 39
    // The static plugins we use
#if defined(__mobile__)
    GST_PLUGIN_STATIC_DECLARE(coreelements);
    GST_PLUGIN_STATIC_DECLARE(libav);
    GST_PLUGIN_STATIC_DECLARE(rtp);
40
    GST_PLUGIN_STATIC_DECLARE(rtsp);
41 42 43
    GST_PLUGIN_STATIC_DECLARE(udp);
    GST_PLUGIN_STATIC_DECLARE(videoparsersbad);
    GST_PLUGIN_STATIC_DECLARE(x264);
44
    GST_PLUGIN_STATIC_DECLARE(rtpmanager);
45 46
    GST_PLUGIN_STATIC_DECLARE(isomp4);
    GST_PLUGIN_STATIC_DECLARE(matroska);
47 48 49 50
#endif
    G_END_DECLS
#endif

dogmaphobic's avatar
dogmaphobic committed
51
#if defined(QGC_GST_STREAMING)
Don Gagne's avatar
Don Gagne committed
52
#if (defined(__macos__) && defined(QGC_INSTALL_RELEASE)) || defined(Q_OS_WIN)
dogmaphobic's avatar
dogmaphobic committed
53 54 55 56 57 58
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
Don Gagne's avatar
Don Gagne committed
59
#endif
dogmaphobic's avatar
dogmaphobic committed
60

61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103
#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

104
void initializeVideoStreaming(int &argc, char* argv[], char* logpath, char* debuglevel)
105 106
{
#if defined(QGC_GST_STREAMING)
107 108 109 110 111 112 113 114 115 116 117
    #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
Don Gagne's avatar
Don Gagne committed
118 119 120
    #elif defined(Q_OS_WIN)
        QString currentDir = QCoreApplication::applicationDirPath();
        qgcputenv("GST_PLUGIN_PATH", currentDir, "/gstreamer-plugins");
121
    #endif
122 123


124
        // Initialize GStreamer
125 126 127 128 129 130 131 132 133 134
        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);
        }


135 136 137 138 139 140 141 142
        GError* error = NULL;
        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
Gus Grubba's avatar
Gus Grubba committed
143
    #if defined(__mobile__) && !defined(__macos__)
144 145 146
        GST_PLUGIN_STATIC_REGISTER(coreelements);
        GST_PLUGIN_STATIC_REGISTER(libav);
        GST_PLUGIN_STATIC_REGISTER(rtp);
147
        GST_PLUGIN_STATIC_REGISTER(rtsp);
148 149 150
        GST_PLUGIN_STATIC_REGISTER(udp);
        GST_PLUGIN_STATIC_REGISTER(videoparsersbad);
        GST_PLUGIN_STATIC_REGISTER(x264);
151
        GST_PLUGIN_STATIC_REGISTER(rtpmanager);
152 153
        GST_PLUGIN_STATIC_REGISTER(isomp4);
        GST_PLUGIN_STATIC_REGISTER(matroska);
154
    #endif
155 156 157
#else
    Q_UNUSED(argc);
    Q_UNUSED(argv);
DonLakeFlyer's avatar
DonLakeFlyer committed
158 159
    Q_UNUSED(logpath);
    Q_UNUSED(debuglevel);
160
#endif
161 162 163 164 165 166
    qmlRegisterType<VideoItem>              ("QGroundControl.QgcQtGStreamer", 1, 0, "VideoItem");
    qmlRegisterUncreatableType<VideoSurface>("QGroundControl.QgcQtGStreamer", 1, 0, "VideoSurface", QLatin1String("VideoSurface from QML is not supported"));
}

void shutdownVideoStreaming()
{
167 168 169 170 171 172 173 174
    /* 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.
     *
175
#if defined(QGC_GST_STREAMING)
176
     gst_deinit();
177
#endif
178
    */
179
}