pjsua2示例（适用于android）视频调用旋转-90度并在调用setCaptureOrient时引发异常

我正在使用pjsua2示例项目进行视频通话，一切都很好，android应用程序客户端都可以看到和听到对方的声音，但视频是旋转90度的。 在CallActivity.java中，调用setCaptureOrientcap_dev，orient，true时会引发异常

例外信息：

media.cpp！pjsua_vid_dev_set_settingdev_id，PJMEDIA_vid_dev_CAP_ORIENTATION，&ORIENTATION，keep错误：不支持选项/操作PJ_ENOTSUP status=70012[../src/pjsua2/media.cpp:1483] 说明：PJ_ENOTSUP不支持选项/操作

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我没有更改任何内容，但它就是不起作用，为什么？

我已经知道错误的原因，是pjsip源代码不支持我使用的ffmpeg libs的捕获方向设置。我在：pjproject/pjmedia/src/pjmedia videodev/util.c中找到了它

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请问如何从pjsua2示例应用程序进行视频通话

@Override
    public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);

    WindowManager wm;
    Display display;
    int rotation;
    pjmedia_orient orient;

    wm = (WindowManager)this.getSystemService(Context.WINDOW_SERVICE);
    display = wm.getDefaultDisplay();
    rotation = display.getRotation();
    System.out.println("Device orientation changed: " + rotation);

    switch (rotation) {
    case Surface.ROTATION_0:   // Portrait
        orient = pjmedia_orient.PJMEDIA_ORIENT_ROTATE_270DEG;
        break;
    case Surface.ROTATION_90:  // Landscape, home button on the right
        orient = pjmedia_orient.PJMEDIA_ORIENT_NATURAL;
        break;
    case Surface.ROTATION_180:
        orient = pjmedia_orient.PJMEDIA_ORIENT_ROTATE_90DEG;
        break;
    case Surface.ROTATION_270: // Landscape, home button on the left
        orient = pjmedia_orient.PJMEDIA_ORIENT_ROTATE_180DEG;
        break;
    default:
        orient = pjmedia_orient.PJMEDIA_ORIENT_UNKNOWN;
    }

    if (MyApp.ep != null && MainActivity.account != null) {
        try {
        AccountConfig cfg = MainActivity.account.cfg;
        int cap_dev = cfg.getVideoConfig().getDefaultCaptureDevice();




        //----------here throws an exception:option/operation is not support. ------------

        MyApp.ep.vidDevManager().setCaptureOrient(cap_dev, orient,true);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}    

...
#include "util.h"

#include <pj/assert.h>
#include <pj/errno.h>
#include <pj/log.h>

#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)

#if defined(PJMEDIA_HAS_LIBYUV) && PJMEDIA_HAS_LIBYUV != 0
#include  <libyuv.h>
#define HAS_ROTATION 1
#else
    #define HAS_ROTATION 0     //the reason why ffmpeg not support capture orientation setting
#endif

#define THIS_FILE       "vid_util.c"

pj_status_t
pjmedia_vid_dev_conv_create_converter(pjmedia_vid_dev_conv *conv,
                  pj_pool_t *pool,
                  pjmedia_format *fmt,
                  pjmedia_rect_size src_size,
                  pjmedia_rect_size dst_size,
                  pj_bool_t handle_rotation,
                  pj_bool_t maintain_aspect_ratio)
{
    pj_status_t status;
    pjmedia_conversion_param conv_param;
    const pjmedia_video_format_info *vfi;   

    pj_assert((src_size.w == dst_size.w || src_size.h == dst_size.h) ||
          (src_size.w == dst_size.h || src_size.h == dst_size.w));

if (conv->conv)
    return PJ_SUCCESS;

if (fmt->id != PJMEDIA_FORMAT_I420 && fmt->id != PJMEDIA_FORMAT_BGRA)
    return PJ_EINVAL;

/* Currently, for BGRA format, device must handle the rotation. */
if (fmt->id == PJMEDIA_FORMAT_BGRA && handle_rotation)
    return PJ_ENOTSUP;

if (handle_rotation) {
#if !HAS_ROTATION
return PJ_ENOTSUP; // return ffmpeg not support capture orientation setting error
#endif
}
...