如何在GTK3.0中使用gstreamer同时播放视频和音频

sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev

#include <gtk/gtk.h>
#include <gst/gst.h>

static void on_play_button_clicked(GtkWidget *button, gpointer data) {
    GstElement *pipeline;
    GstElement *source, *demuxer, *videoSink, *audioSink;
    GstBus *bus;
    GstMessage *msg;
    gchar *uri = "https://example.com/video.mp4"; // 视频文件的URI地址

    /* 初始化GStreamer */
    gst_init(NULL, NULL);

    /* 创建GStreamer元素 */
    pipeline = gst_pipeline_new("audio-video-player");
    source = gst_element_factory_make("uridecodebin", "source");
    demuxer = gst_element_factory_make("tee", "demuxer");
    videoSink = gst_element_factory_make("autovideosink", "videoSink");
    audioSink = gst_element_factory_make("autoaudiosink", "audioSink");

    /* 设置URI */
    g_object_set(G_OBJECT(source), "uri", uri, NULL);

    /* 添加元素到pipeline */
    gst_bin_add_many(GST_BIN(pipeline), source, demuxer, videoSink, audioSink, NULL);

    /* 连接元素 */
    gst_element_link(source, demuxer);
    gst_element_link_many(videoSink, NULL);
    gst_element_link_many(audioSink, NULL);

    /* 设置窗口 */
    gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY(videoSink), GDK_WINDOW_XID(GTK_WIDGET(data)->window));

    /* 启动pipeline */
    gst_element_set_state(pipeline, GST_STATE_PLAYING);

    /* 等待直到播放完成或发生错误 */
    bus = gst_element_get_bus(pipeline);
    msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);

    /* 处理消息 */
    if (msg != NULL) {
        GError *err;
        gchar *debug_info;

        switch (GST_MESSAGE_TYPE(msg)) {
            case GST_MESSAGE_ERROR:
                gst_message_parse_error(msg, &err, &debug_info);
                g_printerr("Error received from element %s: %s\n", GST_OBJECT_NAME(msg->src), err->message);
                g_printerr("Debugging information: %s\n", debug_info ? debug_info : "none");
                g_error_free(err);
                g_free(debug_info);
                break;
            case GST_MESSAGE_EOS:
                g_print("End-Of-Stream reached.\n");
                break;
            default:
                /* We should not reach here */
                g_printerr("Unexpected message received.\n");
                break;
        }
        gst_message_unref(msg);
    }

    /* 停止并释放资源 */
    gst_element_set_state(pipeline, GST_STATE_NULL);
    gst_object_unref(GST_OBJECT(pipeline));
}

int main(int argc, char *argv[]) {
    GtkWidget *window;
    GtkWidget *playButton;

    /* 初始化GTK */
    gtk_init(&argc, &argv);

    /* 创建窗口 */
    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "GTK GStreamer Player");
    gtk_window_set_default_size(GTK_WINDOW(window), 640, 480);
    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

    /* 创建播放按钮 */
    playButton = gtk_button_new_with_label("Play");
    g_signal_connect(playButton, "clicked", G_CALLBACK(on_play_button_clicked), window);

    /* 将按钮添加到窗口 */
    gtk_container_add(GTK_CONTAINER(window), playButton);

    /* 显示窗口和内容 */
    gtk_widget_show_all(window);

    /* 进入GTK主循环 */
    gtk_main();

    return 0;
}

gcc -o player player.c $(pkg-config --cflags --libs gtk+-3.0 gstreamer-1.0)

./player