如何在C++中使用Gstream管道将PCM文件编码为MP3或AC3

#include <gst/gst.h>

int main(int argc, char *argv[]) {
    gst_init(&argc, &argv);

    // 创建Gstreamer管道
    GstElement *pipeline = gst_pipeline_new("audio-pipeline");

    // 创建文件源和文件目标
    GstElement *filesrc = gst_element_factory_make("filesrc", "file-source");
    GstElement *filesink = gst_element_factory_make("filesink", "file-sink");

    // 创建音频转换器
    GstElement *audioconvert = gst_element_factory_make("audioconvert", "audio-convert");

    // 设置管道参数
    gst_bin_add_many(GST_BIN(pipeline), filesrc, audioconvert, filesink, NULL);
    gst_element_link_many(filesrc, audioconvert, filesink, NULL);

    // 设置音频编码器
    g_object_set(G_OBJECT(filesink), "location", "output.mp3", NULL);

    // 设置文件路径
    g_object_set(G_OBJECT(filesrc), "location", "input.pcm", NULL);

    // 启动管道
    gst_element_set_state(pipeline, GST_STATE_PLAYING);

    // 等待管道完成
    GstBus *bus = gst_element_get_bus(pipeline);
    GstMessage *msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);

    // 清理资源
    gst_element_set_state(pipeline, GST_STATE_NULL);
    gst_object_unref(GST_OBJECT(pipeline));

    return 0;
}