Android平台RTMP推送|轻量级RTSP服务|GB28181设备接入模块之实时快照保存JPG还是PNG？

/*** 请使用新的CaptureImage接口, 这个接口只能保存PNG图片, 不推荐使用* Save current image during publishing stream(实时快照)** @param imageName: image name, which including fully path, "/sdcard/daniuliveimage/daniu.png", etc.** @return {0} if successful*/publicnativeintSmartPublisherSaveCurImage(longhandle,  StringimageName);

/*** 新的截图接口, 支持JPEG和PNG两种格式* @param compress_format: 压缩格式, 0:JPEG格式, 1:PNG格式, 其他返回错误* @param quality: 取值范围:[0, 100], 值越大图像质量越好, 仅对JPEG格式有效, 若是PNG格式,请填100* @param file_name: 图像文件名, 例如:/dirxxx/test20231113100739.jpeg, /dirxxx/test20231113100739.png* @param user_data_string: 用户自定义字符串* @return {0} if successful*/publicnativeintCaptureImage(longhandle, intcompress_format, intquality, Stringfile_name, Stringuser_data_string);

privateSimpleDateFormatcapture_image_date_format_;
classButtonCaptureImageListenerimplementsOnClickListener {
@SuppressLint("SimpleDateFormat")
publicvoidonClick(Viewv) {
if(isPushingRtmp||isRecording||isRTSPPublisherRunning||isPushingRtsp)
            {
if (null==capture_image_date_format_)
capture_image_date_format_=newSimpleDateFormat("yyyyMMddHHmmssSSS");
StringtimeStamp=capture_image_date_format_.format(newDate());
StringimageFileName=timeStamp;    //创建以时间命名的文件名称StringimagePath=imageSavePath+"/"+imageFileName;
intquality;
booleanis_jpeg=true;
if (is_jpeg) {
imagePath+=".jpeg";
quality=100;
                }
else {
imagePath+=".png";
quality=100;
                }
intcapture_ret=libPublisher.CaptureImage(publisherHandle,is_jpeg?0:1, quality, imagePath, "test_user_data");
Log.i(TAG, "capture_image ret:"+capture_ret+", file:"+imagePath);
            }
else            {
Log.e(TAG, "快照失败，请确保在推送、录像或内置RTSP服务发布状态..");
            }
        }
    }

classEventHandeV2implementsNTSmartEventCallbackV2 {
@OverridepublicvoidonNTSmartEventCallbackV2(longhandle, intid, longparam1, longparam2, Stringparam3, Stringparam4, Objectparam5) {
Log.i(TAG, "EventHandeV2: handle="+handle+" id:"+id);
Stringpublisher_event="";
switch (id) {
                .....
caseNTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_CAPTURE_IMAGE:
publisher_event="快照: "+param1+" 路径："+param3;
if (0==param1) {
rename_image_file_name(param3, param2);
publisher_event=publisher_event+"截取快照成功.."+", 用户数据:"+param4;
                    } elsepublisher_event=publisher_event+"截取快照失败..";
break;
                    ....
        }
    }

privatevoidrename_image_file_name(Stringfile_name, longfile_date_time_ms) {
if (null==file_name||file_name.isEmpty()
||file_date_time_ms<1||null==capture_image_date_format_)
return;
try {
java.io.Filefile=newFile(file_name);
if (!file.exists() ||!file.isFile() ||!file.canRead() ||file.length() <1)
return;
Stringfile_name_extension=null;
intindex=file_name.lastIndexOf('.');
if (index>-1)
file_name_extension=file_name.substring(index+1);
Datefile_date=newDate(file_date_time_ms);
Stringnew_file_name=capture_image_date_format_.format(file_date);
if (file_name_extension!=null&&!file_name_extension.isEmpty())
new_file_name+="."+file_name_extension;
java.io.Filenew_file=newjava.io.File(file.getParent(), new_file_name);
if (file.renameTo(new_file))
Log.i(TAG, "rename image file name ok, file_name:"+file_name+", new:"+new_file_name);
elseLog.e(TAG, "rename image file name failed, file_name:"+file_name);
        } catch (Exceptione) {
Log.e(TAG, "rename_image_file_name Exception:", e);
        }
    }