screenshot

截屏

从4.0.6开始，推流支持预览截屏功能，截屏接口为:requestScreenShot

需要通过ScreenShotListener获得requestScreenShot返回的Bitmap图像，可以使用如下方法将bitmap保存到sdcard：

     mStreamer.requestScreenShot(new GLRender.ScreenShotListener() {
            @Override
            public void onBitmapAvailable(Bitmap bitmap) {
                BufferedOutputStream bos = null;
                try {
                    Date date = new Date() ;
                    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss") ;
                    final String filename = "/sdcard/screenshot"+ dateFormat.format(date) + ".jpg";

                    bos = new BufferedOutputStream(new FileOutputStream(filename));
                    if (bitmap != null) {
                        bitmap.compress(Bitmap.CompressFormat.JPEG, 90, bos);
                        runOnUiThread(new Runnable() {
                            public void run() {
                                Toast.makeText(CameraActivity.this, "保存截图到 "+ filename,
                                        Toast.LENGTH_SHORT).show();
                            }
                        });
                    }
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } finally {
                    if (bos != null) try {
                        bos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        });