本文主要是介绍android基于ffmpeg的简单视频播发器 三线程实现播放器(完)，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
一个多星期都在研究播放器，从双线程到三线程，它们的关系太复杂了，总是搞不定，而且本人c++水平实在有限，很多东西都不太会用。终于搞好了一个能拿得出手的东东，基本没啥严重的bug了，或者我没发现严重的bug，不过代码还是挺乱的，而且音视频对齐使用的办法也不是很好，以后再慢慢优化，先拿来用
一个线程读取AVPacket保存到数组，由另外两个线程做解码和播放，这样就不会出现上一篇博文里一个文件两个线程都去加载了，这样读网络资源就不需要读两次了，对ffmpeg理解还是不深，不明白地方太多了，先按自己理解的来吧
因为不能确定数据多少，所以要用动态数组，我就用了vector来储存数据
std::vector<AVPacket *> video_packets; std::vector<AVPacket *> audio_packets;
还要加个数组最大数，不然直接就会爆掉的
int max_count = 200;
还需要记录线程的状态
typedef enum {VIDEO_READY_STOP, VIDEO_STOP, VIDEO_READY_MOVE, VIDEO_MOVE, VIDEO_MOVE_OVER, VIDEO_READY, VIDEO_PLAY, VIDEO_OVER } VIDEO_STATE;
在开发中发现一个严重的bug，那就是关于SurfaceView的生命周期，当app切换到后台时，SurfaceView会释放掉Surface,所以egl就不能用了，要重新加载Surface，所以要记录下SurfaceView的生命周期来进行操作，在加个锁防止并发
bool create_egl = false; pthread_mutex_t play_mutex;
试了试简单的跳帧
if(!yuvFrame->key_frame){int m = (int)s / -300; if(m > throw_max){throw_max = m; }if(throw_index < throw_max){throw_index++; av_frame_free(&yuvFrame); av_packet_unref(pkt); continue; } }
主要还是各种逻辑关系，基本思路是先停音频线程，再停视频线程，先启动视频线程，在启动音频线程，因为视频解码比较费时，所以优先考虑视频
java代码VideoSurfaceView
public class VideoSurfaceView extends SurfaceView implements SurfaceHolder.Callback {/** * 视频路径 */ String videoPath = "/storage/emulated/0/baiduNetdisk/season09.mp4"; private SurfaceHolder mHolder; public VideoSurfaceView(Context context) {super(context); init(); }public VideoSurfaceView(Context context, AttributeSet attributeSet) {super(context, attributeSet); init(); }private void init() {mHolder = getHolder(); mHolder.addCallback(this); Thread thread = new Thread() {@Override public void run() {super.run(); decoder(videoPath); }}; thread.start(); Thread audioThread = new Thread() {@Override public void run() {super.run(); audioPlay(); }}; Thread videoThread = new Thread() {@Override public void run() {super.run(); videoPlay(); }}; audioThread.start(); videoThread.start(); }public void surfaceCreated(SurfaceHolder holder) {created(); }public void surfaceDestroyed(SurfaceHolder holder) {destroyed(); }public void surfaceChanged(SurfaceHolder holder, int format, final int w, final int h) {}public Surface getSurface(){return mHolder.getSurface(); }public AudioTrack createAudio(int sampleRateInHz, int nb_channels) {int channelConfig; if (nb_channels == 1) {channelConfig = AudioFormat.CHANNEL_OUT_MONO; } else if (nb_channels == 2) {channelConfig = AudioFormat.CHANNEL_OUT_STEREO; } else {channelConfig = AudioFormat.CHANNEL_OUT_STEREO; }int audioFormat = AudioFormat.ENCODING_PCM_16BIT; int minBufferSize = AudioTrack.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat); AudioTrack audio = new AudioTrack(AudioManager.STREAM_MUSIC, // 指定流的类型 sampleRateInHz, // 设置音频数据的采样率 32k，如果是44.1k就是44100 channelConfig, // 设置输出声道为双声道立体声，而CHANNEL_OUT_MONO类型是单声道 audioFormat, // 设置音频数据块是8位还是16位，这里设置为16位。好像现在绝大多数的音频都是16位的了 minBufferSize, AudioTrack.MODE_STREAM // 设置模式类型，在这里设置为流类型，另外一种MODE_STATIC貌似没有什么效果 ); // audio.play(); // 启动音频设备，下面就可以真正开始音频数据的播放了 return audio; }static {System.loadLibrary("native-lib"); }public native void decoder(String path); public native void play(); public native void stop(); public native void videoPlay(); public native void audioPlay(); public native void move(long time); public native void created(); public native void destroyed(); public native void close(); }
extern "C" { #include "libavformat/avformat.h" #include "libavfilter/avfiltergraph.h" #include "libavfilter/buffersink.h" #include "libswresample/swresample.h" }; #include <vector> #include<mutex> #define MAX_AUDIO_FRME_SIZE 48000 * 4 //系统当前时间 long getCurrentTime() {struct timeval tv; gettimeofday(&tv, NULL); return tv.tv_sec * 1000 + tv.tv_usec / 1000; } //等待时间 timespec waitTime(long timeout_ms) {struct timespec abstime; struct timeval now; gettimeofday(&now, NULL); long nsec = now.tv_usec * 1000 + (timeout_ms % 1000) * 1000000; abstime.tv_sec = now.tv_sec + nsec / 1000000000 + timeout_ms / 1000; abstime.tv_nsec = nsec % 1000000000; return abstime; }double play_time;//播放时间 long audio_time = 0;//声音时间 -1表示音频线程停止，-2表示视频数据和停止的音频数据停在差不多位置 long start_time = 0;//记录audio_time的时间 bool isClose = false;//结束循环 std::vector<AVPacket *> video_packets;//视频数据数组 std::vector<AVPacket *> audio_packets;//音频数据数组 AVStream *video_stream = NULL; AVStream *audio_stream = NULL; AVCodecContext *video_codec_ctx; AVCodecContext *audio_codec_ctx; //视频锁 pthread_mutex_t video_mutex; pthread_cond_t video_cond; //音频锁 pthread_mutex_t audio_mutex; pthread_cond_t audio_cond; //解码等待 bool decoder_wait; //解码锁 pthread_mutex_t decoder_mutex; pthread_cond_t decoder_cond; //跳转时间 double move_time = 0; //解码结束 bool decoder_over = false; //数据数组最大数 int max_count = 200; //线程状态 typedef enum {VIDEO_READY_STOP,//准备停止 VIDEO_STOP,//停止 VIDEO_READY_MOVE,//准备跳转 VIDEO_MOVE,//跳转中 VIDEO_MOVE_OVER,//跳转结束 VIDEO_READY,//准备播放 VIDEO_PLAY,//播放中 VIDEO_OVER//播放结束 } VIDEO_STATE; VIDEO_STATE video_state; //视频状态 VIDEO_STATE audio_state; //音频状态 //界面是否隐藏 bool create_egl = false; //渲染锁 pthread_mutex_t play_mutex; //将音频数据与视频数据对齐 void alineAudio2VideoPst() {if (audio_packets.size() >= 3 && video_packets.size() >= 1) {AVPacket *video_packet = video_packets[0]; AVPacket *audio_packet_1 = audio_packets[0]; AVPacket *audio_packet_2 = audio_packets[1]; double video_time = video_packet->pts * av_q2d(video_stream->time_base); double audio_time_1 = audio_packet_1->pts * av_q2d(audio_stream->time_base); double audio_time_2 = audio_packet_2->pts * av_q2d(audio_stream->time_base); if (video_time >= audio_time_1 && video_time < audio_time_2) {} else {audio_packets.erase(audio_packets.begin()); av_packet_unref(audio_packet_1); alineAudio2VideoPst(); }} }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_decoder(JNIEnv *env, jobject instance, jstring path_) {const char *path = env->GetStringUTFChars(path_, 0); // TODO pthread_mutex_init(&decoder_mutex, NULL); pthread_cond_init(&decoder_cond, NULL); pthread_mutex_lock(&decoder_mutex); decoder_wait = true; pthread_cond_wait(&decoder_cond, &decoder_mutex); decoder_wait = false; pthread_mutex_unlock(&decoder_mutex); av_register_all(); avformat_network_init(); AVFormatContext *fmt_ctx = avformat_alloc_context(); if (avformat_open_input(&fmt_ctx, path, NULL, NULL) < 0) {return; }if (avformat_find_stream_info(fmt_ctx, NULL) < 0) {return; }int video_stream_index = -1; int audio_stream_index = -1; for (int i = 0; i < fmt_ctx->nb_streams; i++) {if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {video_stream = fmt_ctx->streams[i]; video_stream_index = i; } else if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {audio_stream = fmt_ctx->streams[i]; audio_stream_index = i; }if (video_stream_index != -1 && audio_stream_index != -1) {break; }}if (video_stream_index == -1) {return; }if (audio_stream_index == -1) {return; }video_codec_ctx = avcodec_alloc_context3(NULL); avcodec_parameters_to_context(video_codec_ctx, video_stream->codecpar); AVCodec *video_codec = avcodec_find_decoder(video_codec_ctx->codec_id); if (avcodec_open2(video_codec_ctx, video_codec, NULL) < 0) {return; }audio_codec_ctx = avcodec_alloc_context3(NULL); avcodec_parameters_to_context(audio_codec_ctx, audio_stream->codecpar); AVCodec *audio_codec = avcodec_find_decoder(audio_codec_ctx->codec_id); if (avcodec_open2(audio_codec_ctx, audio_codec, NULL) < 0) {return; }while (1) {if (isClose) {break; }//视频频是否进入跳转状态 // 状态顺序 // VIDEO_READY_MOVE->audio_state = VIDEO_MOVE -> video_state == VIDEO_MOVE -> VIDEO_MOVE_OVER if (video_state == VIDEO_MOVE) {//清空数组数据 while (video_packets.size() != 0) {AVPacket *pkt = video_packets[0]; video_packets.erase(video_packets.begin()); av_packet_unref(pkt); }while (audio_packets.size() != 0) {AVPacket *pkt = audio_packets[0]; audio_packets.erase(audio_packets.begin()); av_packet_unref(pkt); }std::vector<AVPacket *>().swap(video_packets); std::vector<AVPacket *>().swap(audio_packets); //计算时间 int64_t k = (int64_t) (move_time / av_q2d(video_stream->time_base)); //跳转 av_seek_frame(fmt_ctx, video_stream_index, k, AVSEEK_FLAG_BACKWARD); avcodec_flush_buffers(video_codec_ctx); avcodec_flush_buffers(audio_codec_ctx); //改变状态 video_state = VIDEO_MOVE_OVER; audio_state = VIDEO_MOVE_OVER; }AVPacket *pkt = (AVPacket *) malloc(sizeof(AVPacket)); //当没有数据时 if (av_read_frame(fmt_ctx, pkt) < 0) {av_packet_unref(pkt); //是否跳转结束 if (video_state == VIDEO_MOVE_OVER && audio_state == VIDEO_MOVE_OVER){//数据对齐 alineAudio2VideoPst(); //启动视频播放线程，变成播放状态 pthread_mutex_lock(&video_mutex); video_state = VIDEO_PLAY; pthread_cond_signal(&video_cond); pthread_mutex_unlock(&video_mutex); //启动音频播放线程，变成播放状态 pthread_mutex_lock(&audio_mutex); audio_state = VIDEO_PLAY; pthread_cond_signal(&audio_cond); pthread_mutex_unlock(&audio_mutex); }//先判断是否进入了跳转状态，是就不让线程进行等待 pthread_mutex_lock(&decoder_mutex); if (video_state != VIDEO_MOVE && !isClose) {decoder_over = true; pthread_cond_wait(&decoder_cond, &decoder_mutex); decoder_over = false; }pthread_mutex_unlock(&decoder_mutex); continue; }if (pkt->stream_index == audio_stream_index) {pthread_mutex_lock(&audio_mutex); audio_packets.push_back(pkt); pthread_mutex_unlock(&audio_mutex); } else if (pkt->stream_index == video_stream_index) {pthread_mutex_lock(&video_mutex); video_packets.push_back(pkt); pthread_mutex_unlock(&video_mutex); }//判断数组数据超过最大值 if (video_packets.size() > max_count && audio_packets.size() > max_count) {//是否跳转结束 if (video_state == VIDEO_MOVE_OVER && audio_state == VIDEO_MOVE_OVER){//数据对齐 alineAudio2VideoPst(); //启动视频播放线程，变成播放状态 pthread_mutex_lock(&video_mutex); video_state = VIDEO_PLAY; pthread_cond_signal(&video_cond); pthread_mutex_unlock(&video_mutex); //启动音频播放线程，变成播放状态 pthread_mutex_lock(&audio_mutex); audio_state = VIDEO_PLAY; pthread_cond_signal(&audio_cond); pthread_mutex_unlock(&audio_mutex); } else{//是否是准备状态 if (audio_state == VIDEO_READY) {pthread_mutex_lock(&audio_mutex); pthread_cond_signal(&audio_cond); pthread_mutex_unlock(&audio_mutex); }if (video_state == VIDEO_READY) {pthread_mutex_lock(&video_mutex); pthread_cond_signal(&video_cond); pthread_mutex_unlock(&video_mutex); }}//先判断是否进入了跳转状态，是就不让线程进行等待 pthread_mutex_lock(&decoder_mutex); if (video_state != VIDEO_MOVE && !isClose) {decoder_wait = true; pthread_cond_wait(&decoder_cond, &decoder_mutex); decoder_wait = false; }pthread_mutex_unlock(&decoder_mutex); }}//释放 avformat_close_input(&fmt_ctx); while (video_packets.size() != 0) {AVPacket *pkt = video_packets[0]; video_packets.erase(video_packets.begin()); av_packet_unref(pkt); }while (audio_packets.size() != 0) {AVPacket *pkt = audio_packets[0]; audio_packets.erase(audio_packets.begin()); av_packet_unref(pkt); }std::vector<AVPacket *>().swap(video_packets); std::vector<AVPacket *>().swap(audio_packets); pthread_mutex_destroy(&decoder_mutex); pthread_cond_destroy(&decoder_cond); env->ReleaseStringUTFChars(path_, path); } //判断是否要解码 bool isDecoder() {return video_packets.size() > max_count / 2 && audio_packets.size() > max_count / 2 &&decoder_wait; }EGLUtils *eglUtils = NULL; extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_videoPlay(JNIEnv *env, jobject instance) {// TODO pthread_mutex_init(&video_mutex, NULL); pthread_cond_init(&video_cond, NULL); pthread_mutex_init(&play_mutex, NULL); pthread_mutex_lock(&video_mutex); video_state = VIDEO_READY; pthread_cond_wait(&video_cond, &video_mutex); video_state = VIDEO_PLAY; pthread_mutex_unlock(&video_mutex); OpenGLUtils *openGLUtils = new OpenGLUtils(); jclass player_class = env->GetObjectClass(instance); jmethodID get_surface_mid = env->GetMethodID(player_class, "getSurface", "()Landroid/view/Surface;"); AVRational timeBase = video_stream->time_base; int throw_index = 0; int throw_max = 1; int ret; while (1) {//是否进入准备停止状态，数据是否对齐 pthread_mutex_lock(&video_mutex); if (video_state == VIDEO_READY_STOP && audio_time == -2) {video_state = VIDEO_STOP; pthread_cond_wait(&video_cond, &video_mutex); }pthread_mutex_unlock(&video_mutex); //判断音频线程进入等待状态 if (audio_state == VIDEO_MOVE) {pthread_mutex_lock(&decoder_mutex); video_state = VIDEO_MOVE; //判断解码线程是否进入等待状态，是就启动 if (decoder_wait || decoder_over) {pthread_cond_signal(&decoder_cond); }pthread_mutex_unlock(&decoder_mutex); //进入等待状态 pthread_mutex_lock(&video_mutex); if(video_state != VIDEO_PLAY){pthread_cond_wait(&video_cond, &video_mutex); }pthread_mutex_unlock(&video_mutex); }if (isClose) {break; }AVPacket *pkt = NULL; if (video_packets.size() != 0) {pthread_mutex_lock(&video_mutex); pkt = video_packets[0]; video_packets.erase(video_packets.begin()); pthread_mutex_unlock(&video_mutex); }else{//播放结束，进入结束状态 pthread_mutex_lock(&video_mutex); if(video_state == VIDEO_PLAY){video_state = VIDEO_OVER; pthread_cond_wait(&video_cond, &video_mutex); }pthread_mutex_unlock(&video_mutex); }if (pkt == NULL) {continue; }ret = avcodec_send_packet(video_codec_ctx, pkt); if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {av_packet_unref(pkt); continue; }AVFrame *yuvFrame = av_frame_alloc(); ret = avcodec_receive_frame(video_codec_ctx, yuvFrame); if (ret < 0 && ret != AVERROR_EOF) {av_frame_free(&yuvFrame); av_packet_unref(pkt); continue; }if (yuvFrame->pts < 0) {av_packet_unref(pkt); av_frame_free(&yuvFrame); continue; }//初始化opengl pthread_mutex_lock(&play_mutex); if (create_egl) {if (eglUtils == NULL) {openGLUtils->release(); eglUtils = new EGLUtils(); jobject surface = env->CallObjectMethod(instance, get_surface_mid); ANativeWindow *nativeWindow = ANativeWindow_fromSurface(env, surface); eglUtils->initEGL(nativeWindow); openGLUtils->surfaceCreated(); openGLUtils->surfaceChanged(eglUtils->getWidth(), eglUtils->getHeight()); openGLUtils->initTexture(video_codec_ctx->width, video_codec_ctx->height); }}pthread_mutex_unlock(&play_mutex); double nowTime = yuvFrame->pts * av_q2d(timeBase); long a = audio_time; if (a != -1 && a != -2) { //判断音频线程的状态是播放状态进入 long t = (long) (nowTime * 1000); //计算时间，进行等待,比声音慢的话不进行等待 long time = getCurrentTime() - start_time; long s = t - time - a; if (s > 0) {struct timespec abstime = waitTime(s); pthread_mutex_lock(&video_mutex); pthread_cond_timedwait(&video_cond, &video_mutex, &abstime); pthread_mutex_unlock(&video_mutex); }else if(s < - 300 ){//跳帧，音频比视频快时进行跳帧，不跳关键帧 //相差300毫秒进行跳帧，时间太短会有明显的卡顿感 if(!yuvFrame->key_frame){int m = (int)s / -300; if(m > throw_max){throw_max = m; }if(throw_index < throw_max){throw_index++; av_frame_free(&yuvFrame); av_packet_unref(pkt); continue; }}}throw_max = 1; throw_index = 0; }else if(a == -1){//音频线程进入等待状态，对齐数据 if(nowTime >= play_time ){audio_time = -2; }av_frame_free(&yuvFrame); av_packet_unref(pkt); continue; }//opengl渲染 pthread_mutex_lock(&play_mutex); if (eglUtils != NULL) {openGLUtils->updateTexture(yuvFrame->width, yuvFrame->height, yuvFrame->data[0], yuvFrame->data[1], yuvFrame->data[2]); openGLUtils->surfaceDraw(); eglUtils->drawEGL(); }pthread_mutex_unlock(&play_mutex); av_frame_free(&yuvFrame); av_packet_unref(pkt); //启动解码线程 pthread_mutex_lock(&decoder_mutex); if (isDecoder()) {pthread_cond_signal(&decoder_cond); }pthread_mutex_unlock(&decoder_mutex); }//释放 pthread_mutex_destroy(&play_mutex); pthread_cond_destroy(&video_cond); pthread_mutex_destroy(&video_mutex); avcodec_close(video_codec_ctx); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_audioPlay(JNIEnv *env, jobject instance) {// TODO pthread_mutex_init(&audio_mutex, NULL); pthread_cond_init(&audio_cond, NULL); pthread_mutex_lock(&audio_mutex); audio_state = VIDEO_READY; pthread_cond_wait(&audio_cond, &audio_mutex); audio_state = VIDEO_PLAY; pthread_mutex_unlock(&audio_mutex); SwrContext *swr_ctx = swr_alloc(); enum AVSampleFormat in_sample_fmt = audio_codec_ctx->sample_fmt; enum AVSampleFormat out_sample_fmt = AV_SAMPLE_FMT_S16; int in_sample_rate = audio_codec_ctx->sample_rate; int out_sample_rate = in_sample_rate; uint64_t in_ch_layout = audio_codec_ctx->channel_layout; uint64_t out_ch_layout = AV_CH_LAYOUT_STEREO; swr_alloc_set_opts(swr_ctx, out_ch_layout, out_sample_fmt, out_sample_rate, in_ch_layout, in_sample_fmt, in_sample_rate, 0, NULL); swr_init(swr_ctx); int out_channel_nb = av_get_channel_layout_nb_channels(out_ch_layout); jclass player_class = env->GetObjectClass(instance); jmethodID create_audio_track_mid = env->GetMethodID(player_class, "createAudio", "(II)Landroid/media/AudioTrack;"); jobject audio_track = env->CallObjectMethod(instance, create_audio_track_mid, out_sample_rate, out_channel_nb); jclass audio_track_class = env->GetObjectClass(audio_track); jmethodID audio_track_play_mid = env->GetMethodID(audio_track_class, "play", "()V"); jmethodID audio_track_stop_mid = env->GetMethodID(audio_track_class, "stop", "()V"); env->CallVoidMethod(audio_track, audio_track_play_mid); jmethodID audio_track_write_mid = env->GetMethodID(audio_track_class, "write", "([BII)I"); AVRational timeBase = audio_stream->time_base; uint8_t *out_buffer = (uint8_t *) av_malloc(MAX_AUDIO_FRME_SIZE); int ret; while (1) {//停止音频播放，进入等待状态 pthread_mutex_lock(&audio_mutex); if (audio_state == VIDEO_READY_STOP) {audio_state = VIDEO_STOP; audio_time = -1; pthread_cond_wait(&audio_cond, &audio_mutex); } else if (audio_state == VIDEO_READY_MOVE) {audio_state = VIDEO_MOVE; audio_time = -1; pthread_cond_wait(&audio_cond, &audio_mutex); }pthread_mutex_unlock(&audio_mutex); if (isClose) {break; }AVPacket *pkt = NULL; if (audio_packets.size() != 0) {pthread_mutex_lock(&audio_mutex); pkt = audio_packets[0]; audio_packets.erase(audio_packets.begin()); pthread_mutex_unlock(&audio_mutex); }else{//播放结束，进入结束状态 pthread_mutex_lock(&audio_mutex); if (audio_state == VIDEO_PLAY) {audio_state = VIDEO_OVER; pthread_cond_wait(&audio_cond, &audio_mutex); }pthread_mutex_unlock(&audio_mutex); }if (pkt == NULL) {continue; }ret = avcodec_send_packet(audio_codec_ctx, pkt); if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {av_packet_unref(pkt); continue; }AVFrame *frame = av_frame_alloc(); ret = avcodec_receive_frame(audio_codec_ctx, frame); if (ret < 0 && ret != AVERROR_EOF) {av_packet_unref(pkt); av_frame_free(&frame); continue; }if (frame->pts < 0) {av_packet_unref(pkt); av_frame_free(&frame); continue; }//时间赋值 double nowTime = frame->pts * av_q2d(timeBase); long t = (long) (nowTime * 1000); play_time = nowTime; start_time = getCurrentTime(); audio_time = t; swr_convert(swr_ctx, &out_buffer, MAX_AUDIO_FRME_SIZE, (const uint8_t **) frame->data, frame->nb_samples); int out_buffer_size = av_samples_get_buffer_size(NULL, out_channel_nb, frame->nb_samples, out_sample_fmt, 1); jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size); jbyte *sample_bytep = env->GetByteArrayElements(audio_sample_array, NULL); memcpy(sample_bytep, out_buffer, (size_t) out_buffer_size); env->ReleaseByteArrayElements(audio_sample_array, sample_bytep, 0); env->CallIntMethod(audio_track, audio_track_write_mid, audio_sample_array, 0, out_buffer_size); env->DeleteLocalRef(audio_sample_array); av_frame_free(&frame); av_packet_unref(pkt); //启动解码线程 pthread_mutex_lock(&decoder_mutex); if (isDecoder()) {pthread_cond_signal(&decoder_cond); }pthread_mutex_unlock(&decoder_mutex); }env->CallVoidMethod(audio_track, audio_track_stop_mid); av_free(out_buffer); swr_free(&swr_ctx); avcodec_close(audio_codec_ctx); pthread_mutex_destroy(&audio_mutex); pthread_cond_destroy(&audio_cond); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_play(JNIEnv *env, jobject instance) {// TODO pthread_mutex_lock(&audio_mutex); if (audio_state == VIDEO_STOP) {//停止状态，直接播放 audio_state = VIDEO_PLAY; pthread_cond_signal(&audio_cond); }else if(audio_state == VIDEO_OVER){//结束状态，进行跳转，重新开始播放 audio_state = VIDEO_READY_MOVE; pthread_cond_signal(&audio_cond); }pthread_mutex_unlock(&audio_mutex); pthread_mutex_lock(&video_mutex); if (video_state == VIDEO_STOP) { //停止状态，直接播放 video_state = VIDEO_PLAY; pthread_cond_signal(&video_cond); } else if(video_state == VIDEO_OVER){//结束状态，进行跳转，重新开始播放 move_time = 0; video_state = VIDEO_MOVE_OVER; pthread_cond_signal(&video_cond); }pthread_mutex_unlock(&video_mutex); //启动解码线程 pthread_mutex_lock(&decoder_mutex); if (decoder_wait) {pthread_cond_signal(&decoder_cond); }pthread_mutex_unlock(&decoder_mutex); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_move(JNIEnv *env, jobject instance, jlong time) {// TODO move_time = play_time + time; if (move_time < 0) {move_time = 0; }pthread_mutex_lock(&audio_mutex); if (audio_state == VIDEO_STOP) { //停止状态，启动线程进行跳转 audio_state = VIDEO_READY_MOVE; pthread_cond_signal(&audio_cond); } else if (audio_state == VIDEO_PLAY) {//播放状态，直接进行跳转 audio_state = VIDEO_READY_MOVE; }else if(audio_state == VIDEO_OVER){//结束状态，启动线程进行跳转 audio_state = VIDEO_READY_MOVE; pthread_cond_signal(&audio_cond); }pthread_mutex_unlock(&audio_mutex); pthread_mutex_lock(&video_mutex); if (video_state == VIDEO_STOP) {//停止状态，启动线程进行跳转 video_state = VIDEO_READY_MOVE; pthread_cond_signal(&video_cond); } else if (video_state == VIDEO_PLAY) {//播放状态，直接进行跳转 video_state = VIDEO_READY_MOVE; } else if(video_state == VIDEO_OVER){//结束状态，启动线程进行跳转 video_state = VIDEO_READY_MOVE; pthread_cond_signal(&video_cond); }pthread_mutex_unlock(&video_mutex); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_stop(JNIEnv *env, jobject instance) {// TODO //播放状态，变为准备停止状态 pthread_mutex_lock(&audio_mutex); if (audio_state == VIDEO_PLAY) {audio_state = VIDEO_READY_STOP; }pthread_mutex_unlock(&audio_mutex); //播放状态，变为准备停止状态 pthread_mutex_lock(&video_mutex); if (video_state == VIDEO_PLAY) {video_state = VIDEO_READY_STOP; }pthread_mutex_unlock(&video_mutex); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_created(JNIEnv *env, jobject instance) {// TODO //SurfaceView的生命周期，SurfaceHolder.Callback.surfaceCreated内调用 pthread_mutex_lock(&play_mutex); create_egl = true; pthread_mutex_unlock(&play_mutex); } extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_destroyed(JNIEnv *env, jobject instance) {// TODO //SurfaceView的生命周期，SurfaceHolder.Callback.surfaceDestroyed内调用 //释放掉egl环境 pthread_mutex_lock(&play_mutex); if (eglUtils != NULL) {delete eglUtils; eglUtils = NULL; }create_egl = false; pthread_mutex_unlock(&play_mutex); }extern "C" JNIEXPORT void JNICALL Java_com_example_videoplay_VideoSurfaceView_close(JNIEnv *env, jobject instance) {// TODO //结束播放 isClose = true; pthread_mutex_lock(&video_mutex); video_state = VIDEO_PLAY; pthread_cond_signal(&video_cond); pthread_mutex_unlock(&video_mutex); pthread_mutex_lock(&audio_mutex); audio_state = VIDEO_PLAY; pthread_cond_signal(&audio_cond); pthread_mutex_unlock(&audio_mutex); pthread_mutex_lock(&decoder_mutex); pthread_cond_signal(&decoder_cond); pthread_mutex_unlock(&decoder_mutex); }
播放器到此结束，勉强可以用，我准备拿来做公司的项目测试
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