Android 采集摄像头数据 ， 通过ffmpeg推送流至服务器

J .. 2016-04-22 04:27:38

Android 采集摄像头数据 ， 通过ffmpeg推送流, 通过AdobeMediaServer查看 ， 为什么播放视频总是隔一段时间一缓冲 ， 而且播放有延迟。求大神帮忙啊

AVFormatContext *ofmt_ctx;

AVStream* video_st;

//视音频流对应的结构体，用于视音频编解码。

AVCodecContext* pCodecCtx;

AVCodec* pCodec;

AVPacket enc_pkt; // 存储压缩数据（视频对应H.264等码流数据，音频对应AAC/MP3等码流数据）

AVFrame *pFrameYUV; // 存储非压缩的数据（视频对应RGB/YUV像素数据，音频对应PCM采样数据）



int framecnt = 0;

int yuv_width;

int yuv_height;

int y_length;

int uv_length;

int64_t start_time;

//const char* out_path = "rtmp://192.168.2.176/live/livestream";



//Output FFmpeg's av_log()

void custom_log(void *ptr, int level, const char* fmt, va_list vl) {

	FILE *fp = fopen("/storage/emulated/0/av_log.txt", "a+");

	if (fp) {

		vfprintf(fp, fmt, vl);

		fflush(fp);

		fclose(fp);

	}

}



JNIEXPORT jint JNICALL Java_com_zhanghui_test_MainActivity_initial(JNIEnv *env,

		jobject obj, jint width, jint height) {

	const char* out_path = "rtmp://192.168.2.176/live/livestream";



	yuv_width = width;

	yuv_height = height;

	y_length = width * height;

	uv_length = width * height / 4;



	//FFmpeg av_log() callback

	av_log_set_callback(custom_log);



	av_register_all();



	avformat_network_init();



	//output initialize

	avformat_alloc_output_context2(&ofmt_ctx, NULL, "flv", out_path);

	//output encoder initialize

	//函数的参数是一个解码器的ID，返回查找到的解码器（没有找到就返回NULL）。

	pCodec = avcodec_find_encoder(AV_CODEC_ID_H264);

	if (!pCodec) {

		LOGE("Can not find encoder!\n");

		return -1;

	}

	pCodecCtx = avcodec_alloc_context3(pCodec);

	pCodecCtx->pix_fmt = PIX_FMT_YUV420P;

	pCodecCtx->width = width;

	pCodecCtx->height = height;

	pCodecCtx->time_base.num = 1;

	pCodecCtx->time_base.den = 25;

	pCodecCtx->bit_rate = 400000;

	pCodecCtx->gop_size = 250;

	/* Some formats want stream headers to be separate. */

	if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)

		pCodecCtx->flags |= CODEC_FLAG_GLOBAL_HEADER;



	//H264 codec param

	//pCodecCtx->me_range = 16;

	//pCodecCtx->max_qdiff = 4;

	//pCodecCtx->qcompress = 0.6;

	pCodecCtx->qmin = 10;

	pCodecCtx->qmax = 51;

	//Optional Param

	pCodecCtx->max_b_frames = 1;

	// Set H264 preset and tune

	AVDictionary *param = 0;

//	av_dict_set(¶m, "preset", "ultrafast", 0);

//	av_dict_set(¶m, "tune", "zerolatency", 0);

	av_opt_set(pCodecCtx->priv_data, "preset", "superfast", 0);

	av_opt_set(pCodecCtx->priv_data, "tune", "zerolatency", 0);

	//打开编码器

	if (avcodec_open2(pCodecCtx, pCodec, ¶m) < 0) {

		LOGE("Failed to open encoder!\n");

		return -1;

	}



	//Add a new stream to output,should be called by the user before avformat_write_header() for muxing

	video_st = avformat_new_stream(ofmt_ctx, pCodec);

	if (video_st == NULL) {

		return -1;

	}

	video_st->time_base.num = 1;

	video_st->time_base.den = 25;

	video_st->codec = pCodecCtx;



	//Open output URL,set before avformat_write_header() for muxing

	if (avio_open(&ofmt_ctx->pb, out_path, AVIO_FLAG_READ_WRITE) < 0) {

		LOGE("Failed to open output file!\n");

		return -1;

	}



	//Write File Header

	avformat_write_header(ofmt_ctx, NULL);



	start_time = av_gettime();

	return 0;

}



JNIEXPORT jint JNICALL Java_com_zhanghui_test_MainActivity_encode(JNIEnv *env,

		jobject obj, jbyteArray yuv) {

	int ret;

	int enc_got_frame = 0;

	int i = 0;



	// 为解码帧分配内存

	pFrameYUV = avcodec_alloc_frame();

	uint8_t *out_buffer = (uint8_t *) av_malloc(

			avpicture_get_size(PIX_FMT_YUV420P, pCodecCtx->width,

					pCodecCtx->height));

	avpicture_fill((AVPicture *) pFrameYUV, out_buffer, PIX_FMT_YUV420P,

			pCodecCtx->width, pCodecCtx->height);



	//安卓摄像头数据为NV21格式，此处将其转换为YUV420P格式

	jbyte* in = (jbyte*) (*env)->GetByteArrayElements(env, yuv, 0);

	memcpy(pFrameYUV->data[0], in, y_length);

	for (i = 0; i < uv_length; i++) {

		*(pFrameYUV->data[2] + i) = *(in + y_length + i * 2);

		*(pFrameYUV->data[1] + i) = *(in + y_length + i * 2 + 1);

	}



	pFrameYUV->format = AV_PIX_FMT_YUV420P;

	pFrameYUV->width = yuv_width;

	pFrameYUV->height = yuv_height;



	enc_pkt.data = NULL;

	enc_pkt.size = 0;

	// 定义AVPacket对象后,请使用av_init_packet进行初始化

	av_init_packet(&enc_pkt);



	/** 编码一帧视频数据

	 * int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,

	 const AVFrame *frame, int *got_packet_ptr);



	 该函数每个参数的含义在注释里面已经写的很清楚了，在这里用中文简述一下：

	 avctx：编码器的AVCodecContext。

	 avpkt：编码输出的AVPacket。

	 frame：编码输入的AVFrame。

	 got_packet_ptr：成功编码一个AVPacket的时候设置为1。

	 函数返回0代表编码成功。



	 */

	ret = avcodec_encode_video2(pCodecCtx, &enc_pkt, pFrameYUV, &enc_got_frame);

	av_frame_free(&pFrameYUV);



	if (enc_got_frame == 1) {

		LOGI("Succeed to encode frame: %5d\tsize:%5d\n", framecnt,

				enc_pkt.size);

		framecnt++;

		//标识该AVPacket所属的视频/音频流。

		enc_pkt.stream_index = video_st->index; //标识该视频/音频流



		//Write PTS

		AVRational time_base = ofmt_ctx->streams[0]->time_base;	//{ 1, 1000 };

		AVRational r_framerate1 = { 60, 2 };	//{ 50, 2 };

		AVRational time_base_q = { 1, AV_TIME_BASE };

		//Duration between 2 frames (us)

		int64_t calc_duration = (double) (AV_TIME_BASE)

				* (1 / av_q2d(r_framerate1));	//内部时间戳

		//Parameters

		//enc_pkt.pts = (double)(framecnt*calc_duration)*(double)(av_q2d(time_base_q)) / (double)(av_q2d(time_base));

		enc_pkt.pts = av_rescale_q(framecnt * calc_duration, time_base_q,

				time_base);

		enc_pkt.dts = enc_pkt.pts;

		enc_pkt.duration = av_rescale_q(calc_duration, time_base_q, time_base); //(double)(calc_duration)*(double)(av_q2d(time_base_q)) / (double)(av_q2d(time_base));

		enc_pkt.pos = -1;



		//Delay

		int64_t pts_time = av_rescale_q(enc_pkt.dts, time_base, time_base_q);

		int64_t now_time = av_gettime() - start_time;

		if (pts_time > now_time)

			av_usleep(pts_time - now_time);



		ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);

		av_free_packet(&enc_pkt);

	}

//	output(ofmt_ctx);

	return 0;

}



JNIEXPORT jint JNICALL Java_com_zhanghui_test_MainActivity_flush(JNIEnv *env,

		jobject obj) {

	int ret;

	int got_frame;

	AVPacket enc_pkt;

	if (!(ofmt_ctx->streams[0]->codec->codec->capabilities & CODEC_CAP_DELAY))

		return 0;

	while (1) {

		enc_pkt.data = NULL;

		enc_pkt.size = 0;

		av_init_packet(&enc_pkt);

		ret = avcodec_encode_video2(ofmt_ctx->streams[0]->codec, &enc_pkt, NULL,

				&got_frame);

		if (ret < 0)

			break;

		if (!got_frame) {

			ret = 0;

			break;

		}

		LOGI("Flush Encoder: Succeed to encode 1 frame!\tsize:%5d\n",

				enc_pkt.size);



		//Write PTS

		AVRational time_base = ofmt_ctx->streams[0]->time_base; //{ 1, 1000 };

		AVRational r_framerate1 = { 60, 2 };

		AVRational time_base_q = { 1, AV_TIME_BASE };

		//Duration between 2 frames (us)

		int64_t calc_duration = (double) (AV_TIME_BASE)

				* (1 / av_q2d(r_framerate1));	//内部时间戳

		//Parameters

		enc_pkt.pts = av_rescale_q(framecnt * calc_duration, time_base_q,

				time_base);

		enc_pkt.dts = enc_pkt.pts;

		enc_pkt.duration = av_rescale_q(calc_duration, time_base_q, time_base);



		//转换PTS/DTS（Convert PTS/DTS）

		enc_pkt.pos = -1;

		framecnt++;

		ofmt_ctx->duration = enc_pkt.duration * framecnt;



		/* mux encoded frame */

		ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);

		if (ret < 0)

			break;

	}

	//Write file trailer

	av_write_trailer(ofmt_ctx);

	return 0;

}



JNIEXPORT jint JNICALL Java_com_zhanghui_test_MainActivity_close(JNIEnv *env,

		jobject obj) {

	if (video_st)

		avcodec_close(video_st->codec);

	avio_close(ofmt_ctx->pb);

	avformat_free_context(ofmt_ctx);

	return 0;

}



```



...全文
3027 5 打赏 收藏 转发到动态 举报
AI 作业
写回复
用AI写文章
5 条回复
切换为时间正序
请发表友善的回复…
发表回复
figsweep_ 2017-01-18
  • 打赏
  • 举报
 回复
楼主在吗？jni中stream（url），这个方法，可以发一下学习下吗？谢谢了。QQ837388582
zhxu188 2016-07-07
  • 打赏
  • 举报
 回复
楼主问题解决了吗
Pavel_Zhang 2016-06-17
  • 打赏
  • 举报
 回复
楼主,有一些不太明白,java代码里有个util是什么?,还有就是编译那个C文件会出错
qiuqingpo 2016-04-22
  • 打赏
  • 举报
 回复
帮你顶一下，我这段时间也在弄这个，看的都是张晖的博客，不过我的进度要比你慢点，还没有到发送到服务器这一步哈
J .. 2016-04-22
  • 打赏
  • 举报
 回复
Java 代码： 
[code=java]public class MainActivity extends Activity {
	private static final String TAG = "MainActivity";
	private Button mTakeButton;
	private Button mPlayButton;
	private Camera mCamera;
	private SurfaceView mSurfaceView;
	private SurfaceHolder mSurfaceHolder;
	private boolean isRecording = false;
	private int i = 0;

	private class StreamTask extends AsyncTask<Void, Void, Void> {

		private byte[] mData;

		// 构造函数
		StreamTask(byte[] data) {
			this.mData = data;
		}

		@Override
		protected Void doInBackground(Void... params) {
			// TODO Auto-generated method stub
			if (mData != null) {
				Log.i(">>>" , Arrays.toString(mData));
				encode(mData);
			}

			return null;
		}
	}

	private StreamTask mStreamTask;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		final Camera.PreviewCallback mPreviewCallbacx = new Camera.PreviewCallback() {
			@Override
			public void onPreviewFrame(byte[] arg0, Camera arg1) {
				// TODO Auto-generated method stub
				if (null != mStreamTask) {
					switch (mStreamTask.getStatus()) {
					case RUNNING:
						return;
					case PENDING:
						mStreamTask.cancel(false);
						break;
					default:
						break;
					}
				}
				
//				if(arg0 != null ){
//					for (int i = 0; i < arg0.length; i++) {
//						Log.e(">>>", arg0[i]+"");
//					}
//				}
				util.e(">>", Arrays.toString(arg0));
				encode(arg0);
//				mStreamTask = new StreamTask(arg0);
//				mStreamTask.execute((Void) null);
			}
		};

		mTakeButton = (Button) findViewById(R.id.take_button);
		mPlayButton = (Button) findViewById(R.id.play_button);

		PackageManager pm = this.getPackageManager();
		boolean hasCamera = pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)
				|| pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)
				|| Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD;
		if (!hasCamera)
			mTakeButton.setEnabled(false);

		mTakeButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				if (mCamera != null) {
					if (isRecording) {
						mTakeButton.setText("Start");
						mCamera.setPreviewCallback(null);
						Toast.makeText(MainActivity.this, "encode done",
								Toast.LENGTH_SHORT).show();
						isRecording = false;

					} else {
						mTakeButton.setText("Stop");
						initial(mCamera.getParameters().getPreviewSize().width,
								mCamera.getParameters().getPreviewSize().height);
//						stream("rtmp://192.168.2.176/live/livestream");
						mCamera.setPreviewCallback(mPreviewCallbacx);
						isRecording = true;
					}
				}
			}
		});

		mPlayButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				 String folderurl = Environment.getExternalStorageDirectory()
				 .getPath();
				
				 String inputurl = folderurl + "/" + "aa.flv";
				// stream("rtmp://192.168.2.176/live/livestream");
			}
		});

		mSurfaceView = (SurfaceView) findViewById(R.id.surfaceView1);
		SurfaceHolder holder = mSurfaceView.getHolder();
		holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

		holder.addCallback(new SurfaceHolder.Callback() {

			@Override
			public void surfaceDestroyed(SurfaceHolder arg0) {
				// TODO Auto-generated method stub
				if (mCamera != null) {
					mCamera.stopPreview();
					mSurfaceView = null;
					mSurfaceHolder = null;
				}
			}

			@Override
			public void surfaceCreated(SurfaceHolder arg0) {
				// TODO Auto-generated method stub
				try {
					if (mCamera != null) {
						mCamera.setPreviewDisplay(arg0);
						mSurfaceHolder = arg0;
					}
				} catch (IOException exception) {
					Log.e(TAG, "Error setting up preview display", exception);
				}
			}

			@Override
			public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
					int arg3) {
				// TODO Auto-generated method stub
				if (mCamera == null)
					return;
				Camera.Parameters parameters = mCamera.getParameters();
				parameters.setPreviewSize(640, 480);
				parameters.setPictureSize(640, 480);
				mCamera.setParameters(parameters);
				try {
					mCamera.startPreview();
					mSurfaceHolder = arg0;
				} catch (Exception e) {
					Log.e(TAG, "could not start preview", e);
					mCamera.release();
					mCamera = null;
				}
			}
		});

	}

	@TargetApi(9)
	@Override
	protected void onResume() {
		super.onResume();
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
			mCamera = Camera.open(0);
		} else {
			mCamera = Camera.open();
		}
	}

	@Override
	protected void onPause() {
		super.onPause();
		flush();
		close();
		if (mCamera != null) {
			mCamera.release();
			mCamera = null;
		}
	}

	// JNI
	public native int initial(int width, int height);

	public native int encode(byte[] yuvimage);

	public native int flush();

	public native int close();

	// JNI
//	public native int stream(String outputurl);

	static {
		System.loadLibrary("avutil-54");
		System.loadLibrary("swresample-1");
		System.loadLibrary("avcodec-56");
		System.loadLibrary("avformat-56");
		System.loadLibrary("swscale-3");
		System.loadLibrary("postproc-53");
		System.loadLibrary("avfilter-5");
		System.loadLibrary("avdevice-56");
		System.loadLibrary("encode");
	}
}
[/code]
windows下ffmpeg推流桌面与摄像头数据到流媒体服务器源码.7z
这是windows下ffmpeg推流桌面与摄像头数据到流媒体服务器源码，该软件里推流和视频保存使用FFMPEG库完成，视频和音频可以同步推流和录制，FFMPEG本身支持跨平台编译开发，QT也支持跨平台，在Android、Linux、windows都运行良好，只需要在不同平台编译对应的ffmpeg库即可，逻辑代码部分通用。
Android摄像头RTMP推流
使用FFMPEG的RTMP推流修改而来,可以读取摄像头和音频推流至流媒体服务器,适合做视频直播的新手参考.
Unity3d 摄像头画面进行采集、录制并上传视频流(推流rtmp)直播工程
Unity3d C#实现将场景中摄像头画面进行采集、录制并上传视频流(推流rtmp)直播的功能； 建议先看说明：https://blog.csdn.net/qq_33789001/article/details/120454854
Android视频采集+RTSP完整代码（可用）
Android视频采集+RTSP完整代码（可用）源代码，是一个很不错的Android源码，有兴趣的伙伴们抽时间可以看一下把
安卓ffmpeg直播推流源码
安卓ffmpeg直播推流，播放源码，视频H264硬编码
移动开发其他问题

791

社区成员

13,279

社区内容

发帖
与我相关
我的任务
社区描述
移动平台 其他移动相关
社区管理员
  • 移动开发其他问题社区
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告
暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章