341 lines
13 KiB
Java
341 lines
13 KiB
Java
package com.example.livestreaming;
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import android.graphics.SurfaceTexture;
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import android.os.Bundle;
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import android.view.Surface;
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import android.view.TextureView;
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import androidx.annotation.Nullable;
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.media3.common.MediaItem;
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import androidx.media3.common.PlaybackException;
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import androidx.media3.common.Player;
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import androidx.media3.exoplayer.ExoPlayer;
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import com.example.livestreaming.databinding.ActivityPlayerBinding;
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import tv.danmaku.ijk.media.player.IMediaPlayer;
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import tv.danmaku.ijk.media.player.IjkMediaPlayer;
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public class PlayerActivity extends AppCompatActivity {
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public static final String EXTRA_PLAY_URL = "extra_play_url";
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public static final String EXTRA_TITLE = "extra_title";
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private ActivityPlayerBinding binding;
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private ExoPlayer player;
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private boolean triedAltUrl = false;
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private IjkMediaPlayer ijkPlayer;
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private Surface ijkSurface;
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private String ijkUrl;
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private String ijkFallbackHlsUrl;
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private boolean ijkFallbackTried;
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private static boolean ijkLibLoaded;
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@Override
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protected void onCreate(@Nullable Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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binding = ActivityPlayerBinding.inflate(getLayoutInflater());
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setContentView(binding.getRoot());
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String t = getIntent().getStringExtra(EXTRA_TITLE);
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setTitle(t != null ? t : "Live");
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}
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@Override
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protected void onStart() {
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super.onStart();
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// TODO: 接入后端接口 - 记录播放开始
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// 接口路径: POST /api/play/start
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// 请求参数:
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// - userId: 当前用户ID（从token中获取，可选）
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// - roomId: 房间ID（从Intent中获取）
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// - playUrl: 播放地址
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// - timestamp: 开始播放时间戳
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// 返回数据格式: ApiResponse<{success: boolean}>
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// 用于统计播放数据和用户行为分析
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String url = getIntent().getStringExtra(EXTRA_PLAY_URL);
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if (url == null || url.trim().isEmpty()) return;
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triedAltUrl = false;
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if (url.endsWith(".flv")) {
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startFlv(url, null);
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return;
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}
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startHls(url, null);
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}
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private void startHls(String url, @Nullable String altUrl) {
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releaseIjkPlayer();
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if (binding != null) {
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binding.flvTextureView.setVisibility(android.view.View.GONE);
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binding.playerView.setVisibility(android.view.View.VISIBLE);
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}
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releaseExoPlayer();
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triedAltUrl = false;
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// 优化缓冲配置 - 针对低延迟 HLS（1秒分片）
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androidx.media3.exoplayer.DefaultLoadControl loadControl =
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new androidx.media3.exoplayer.DefaultLoadControl.Builder()
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.setBufferDurationsMs(
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2500, // 最小缓冲 2.5秒
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10000, // 最大缓冲 10秒
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1500, // 播放前缓冲 1.5秒
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2500 // 重新缓冲 2.5秒
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)
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.setPrioritizeTimeOverSizeThresholds(true)
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.build();
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ExoPlayer exo = new ExoPlayer.Builder(this)
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.setLoadControl(loadControl)
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.build();
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binding.playerView.setPlayer(exo);
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binding.playerView.setUseController(true);
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binding.playerView.setControllerAutoShow(false);
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String computedAltUrl = altUrl;
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if (computedAltUrl == null || computedAltUrl.trim().isEmpty()) {
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computedAltUrl = getAltHlsUrl(url);
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}
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String finalComputedAltUrl = computedAltUrl;
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exo.addListener(new Player.Listener() {
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@Override
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public void onPlayerError(PlaybackException error) {
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android.util.Log.e("PlayerActivity", "播放错误: " + error.getMessage());
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if (triedAltUrl) return;
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if (finalComputedAltUrl == null || finalComputedAltUrl.trim().isEmpty()) return;
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triedAltUrl = true;
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exo.setMediaItem(MediaItem.fromUri(finalComputedAltUrl));
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exo.prepare();
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exo.setPlayWhenReady(true);
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}
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});
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android.util.Log.d("PlayerActivity", "开始播放: " + url);
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exo.setMediaItem(MediaItem.fromUri(url));
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exo.prepare();
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exo.setPlayWhenReady(true);
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player = exo;
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}
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@Override
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protected void onStop() {
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super.onStop();
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// TODO: 接入后端接口 - 记录播放结束
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// 接口路径: POST /api/play/end
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// 请求参数:
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// - userId: 当前用户ID（从token中获取，可选）
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// - roomId: 房间ID（从Intent中获取）
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// - playDuration: 播放时长（秒）
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// - timestamp: 结束播放时间戳
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// 返回数据格式: ApiResponse<{success: boolean}>
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// 用于统计播放时长和用户观看行为
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releaseExoPlayer();
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releaseIjkPlayer();
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}
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private void startFlv(String flvUrl, @Nullable String fallbackHlsUrl) {
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android.util.Log.d("PlayerActivity", "使用IJK播放FLV流: " + flvUrl);
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// 释放 ExoPlayer
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releaseExoPlayer();
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releaseIjkPlayer();
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// 确保 IJK 库已加载
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ensureIjkLibsLoaded();
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// 保存回退地址
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ijkUrl = flvUrl;
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ijkFallbackHlsUrl = fallbackHlsUrl;
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if (ijkFallbackHlsUrl == null || ijkFallbackHlsUrl.trim().isEmpty()) {
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ijkFallbackHlsUrl = flvUrl.replace(".flv", ".m3u8");
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}
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ijkFallbackTried = false;
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// 显示 TextureView，隐藏 ExoPlayer 的 PlayerView
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if (binding != null) {
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binding.playerView.setVisibility(android.view.View.GONE);
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binding.flvTextureView.setVisibility(android.view.View.VISIBLE);
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// 设置 TextureView 监听器
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binding.flvTextureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
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@Override
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public void onSurfaceTextureAvailable(android.graphics.SurfaceTexture surface, int width, int height) {
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android.util.Log.d("PlayerActivity", "SurfaceTexture可用，准备IJK播放器");
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ijkSurface = new Surface(surface);
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prepareIjk(flvUrl);
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}
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@Override
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public void onSurfaceTextureSizeChanged(android.graphics.SurfaceTexture surface, int width, int height) {
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// 尺寸变化时不需要处理
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}
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@Override
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public boolean onSurfaceTextureDestroyed(android.graphics.SurfaceTexture surface) {
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android.util.Log.d("PlayerActivity", "SurfaceTexture销毁");
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releaseIjkPlayer();
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return true;
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}
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@Override
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public void onSurfaceTextureUpdated(android.graphics.SurfaceTexture surface) {
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// 更新时不需要处理
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}
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});
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// 如果 TextureView 已经可用，直接准备播放
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if (binding.flvTextureView.isAvailable()) {
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android.util.Log.d("PlayerActivity", "TextureView已可用，直接准备IJK播放器");
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ijkSurface = new Surface(binding.flvTextureView.getSurfaceTexture());
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prepareIjk(flvUrl);
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}
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}
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}
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private void prepareIjk(String url) {
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if (ijkSurface == null) return;
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IjkMediaPlayer p = new IjkMediaPlayer();
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// ========== 超低延迟核心配置 ==========
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// 禁用数据包缓冲，直接播放
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "packet-buffering", 0);
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// 准备好立即播放
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "start-on-prepared", 1);
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// 无限缓冲模式（配合max_cached_duration使用）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "infbuf", 1);
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// 最大缓存时长 200ms（极低延迟）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "max_cached_duration", 200);
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// 最小帧数 2（快速启动）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "min-frames", 2);
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// 允许丢帧追赶延迟
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "framedrop", 5);
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// 同步类型：视频为主
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "sync-av-start", 0);
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// ========== 格式/解复用配置 ==========
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// 禁用缓冲
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "fflags", "nobuffer");
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// 分析时长 100us（极短）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "analyzeduration", 100);
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// 探测大小 1KB（极小）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "probesize", 1024);
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// 刷新数据包
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "flush_packets", 1);
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// 禁用DNS缓存
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "dns_cache_clear", 1);
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// ========== 编解码配置 ==========
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// 使用硬件解码（如果可用）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec", 1);
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-auto-rotate", 1);
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-handle-resolution-change", 1);
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// 跳过循环滤波（加速解码）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_CODEC, "skip_loop_filter", 48);
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// 跳过帧（加速解码）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_CODEC, "skip_frame", 0);
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// ========== 网络配置 ==========
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// 重连次数
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "reconnect", 1);
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// 超时时间 3秒
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "timeout", 3000000);
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// ========== 音频配置 ==========
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// 开启音频
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "an", 0);
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// OpenSL ES 音频输出（低延迟）
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p.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "opensles", 1);
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p.setOnPreparedListener(mp -> {
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android.util.Log.d("PlayerActivity", "IJK播放器准备完成，开始播放");
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mp.start();
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});
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p.setOnInfoListener((mp, what, extra) -> {
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if (what == IMediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START) {
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android.util.Log.d("PlayerActivity", "IJK首帧渲染完成");
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} else if (what == IMediaPlayer.MEDIA_INFO_BUFFERING_START) {
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android.util.Log.d("PlayerActivity", "IJK开始缓冲");
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} else if (what == IMediaPlayer.MEDIA_INFO_BUFFERING_END) {
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android.util.Log.d("PlayerActivity", "IJK缓冲结束");
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}
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return false;
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});
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p.setOnErrorListener((IMediaPlayer mp, int what, int extra) -> {
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android.util.Log.e("PlayerActivity", "IJK播放错误: what=" + what + ", extra=" + extra);
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if (ijkFallbackTried || ijkFallbackHlsUrl == null || ijkFallbackHlsUrl.trim().isEmpty()) return true;
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ijkFallbackTried = true;
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startHls(ijkFallbackHlsUrl, null);
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return true;
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});
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ijkPlayer = p;
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try {
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p.setSurface(ijkSurface);
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p.setDataSource(url);
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android.util.Log.d("PlayerActivity", "IJK开始准备播放: " + url);
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p.prepareAsync();
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} catch (Exception e) {
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android.util.Log.e("PlayerActivity", "IJK播放异常: " + e.getMessage());
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if (ijkFallbackHlsUrl != null && !ijkFallbackHlsUrl.trim().isEmpty()) {
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startHls(ijkFallbackHlsUrl, null);
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}
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}
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}
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private static void ensureIjkLibsLoaded() {
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if (ijkLibLoaded) return;
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try {
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IjkMediaPlayer.loadLibrariesOnce(null);
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IjkMediaPlayer.native_profileBegin("libijkplayer.so");
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} catch (Throwable ignored) {
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}
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ijkLibLoaded = true;
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}
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private void releaseExoPlayer() {
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if (player != null) {
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player.release();
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player = null;
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}
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if (binding != null) binding.playerView.setPlayer(null);
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}
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private void releaseIjkPlayer() {
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if (ijkPlayer != null) {
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ijkPlayer.reset();
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ijkPlayer.release();
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ijkPlayer = null;
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}
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if (ijkSurface != null) {
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ijkSurface.release();
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ijkSurface = null;
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}
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ijkUrl = null;
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ijkFallbackHlsUrl = null;
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ijkFallbackTried = false;
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if (binding != null) {
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binding.flvTextureView.setVisibility(android.view.View.GONE);
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binding.playerView.setVisibility(android.view.View.VISIBLE);
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}
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}
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private String getAltHlsUrl(String url) {
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if (!url.endsWith(".m3u8")) return null;
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if (url.contains("/index.m3u8")) return null;
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return url.substring(0, url.length() - ".m3u8".length()) + "/index.m3u8";
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}
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}
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