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feat(video): 添加移动端HLS视频流播放列表生成功能
- 实现AppVideoStreamController提供HLS播放列表生成接口 - 添加HlsStreamRequest和HlsStreamResponse数据传输对象 - 实现HlsStreamService服务类处理视频流逻辑 - 支持生成JSON格式和m3u8文件格式的播放列表 - 提供视频片段查询和设备视频HLS播放列表生成功能 - 支持EVENT和VOD两种播放列表类型 - 集成设备存储操作器获取视频文件列表 - 实现播放列表内容构建和视频片段时长计算功能
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package com.ycwl.basic.controller.mobile.manage;
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import com.ycwl.basic.annotation.IgnoreToken;
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import com.ycwl.basic.model.mobile.video.dto.HlsStreamRequest;
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import com.ycwl.basic.model.mobile.video.dto.HlsStreamResponse;
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import com.ycwl.basic.service.mobile.HlsStreamService;
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import com.ycwl.basic.utils.ApiResponse;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.http.MediaType;
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import org.springframework.validation.annotation.Validated;
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import org.springframework.web.bind.annotation.*;
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import jakarta.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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/**
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* 移动端视频流控制器
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* 提供HLS视频流播放列表生成功能
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*
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* @author Claude Code
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* @date 2025-12-26
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*/
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@Slf4j
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@RestController
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@RequestMapping("/api/mobile/video-stream/v1")
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@RequiredArgsConstructor
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public class AppVideoStreamController {
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private final HlsStreamService hlsStreamService;
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/**
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* 生成设备视频的HLS播放列表（JSON格式）
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* 返回包含m3u8内容和视频片段信息的JSON对象
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*
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* @param request HLS流请求参数
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* @return HLS播放列表响应
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*/
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@PostMapping("/hls/playlist")
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public ApiResponse<HlsStreamResponse> generateHlsPlaylist(@Validated @RequestBody HlsStreamRequest request) {
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log.info("收到HLS播放列表生成请求: deviceId={}, durationMinutes={}",
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request.getDeviceId(), request.getDurationMinutes());
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try {
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HlsStreamResponse response = hlsStreamService.generateHlsPlaylist(request);
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log.info("HLS播放列表生成成功: deviceId={}, segmentCount={}, totalDuration={}s",
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response.getDeviceId(), response.getSegmentCount(), response.getTotalDurationSeconds());
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return ApiResponse.success(response);
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} catch (Exception e) {
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log.error("生成HLS播放列表失败: deviceId={}", request.getDeviceId(), e);
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return ApiResponse.buildResponse(500, null, "生成失败: " + e.getMessage());
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}
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}
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/**
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* 生成设备视频的HLS播放列表（m3u8文件格式）
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* 直接返回m3u8文件内容，可被视频播放器直接使用
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*
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* @param deviceId 设备ID
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* @param durationMinutes 视频时长（分钟），默认2分钟
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* @param eventPlaylist 是否为Event播放列表，默认true
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* @param response HTTP响应对象
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*/
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@GetMapping("/hls/playlist.m3u8")
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@IgnoreToken
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public void generateHlsPlaylistFile(
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@RequestParam Long deviceId,
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@RequestParam(defaultValue = "2") Integer durationMinutes,
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@RequestParam(defaultValue = "true") Boolean eventPlaylist,
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HttpServletResponse response) {
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log.info("收到m3u8文件生成请求: deviceId={}, durationMinutes={}",
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deviceId, durationMinutes);
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try {
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// 构建请求参数
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HlsStreamRequest request = new HlsStreamRequest();
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request.setDeviceId(deviceId);
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request.setDurationMinutes(durationMinutes);
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request.setEventPlaylist(eventPlaylist);
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// 生成播放列表
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HlsStreamResponse hlsResponse = hlsStreamService.generateHlsPlaylist(request);
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log.info("m3u8文件生成成功: deviceId={}, segmentCount={}, totalDuration={}s",
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deviceId, hlsResponse.getSegmentCount(), hlsResponse.getTotalDurationSeconds());
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// 设置响应头
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response.setContentType("application/vnd.apple.mpegurl");
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response.setCharacterEncoding(StandardCharsets.UTF_8.name());
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response.setHeader("Content-Disposition", "inline; filename=\"playlist.m3u8\"");
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response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
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response.setHeader("Pragma", "no-cache");
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response.setHeader("Expires", "0");
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// 写入m3u8内容
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response.getWriter().write(hlsResponse.getPlaylistContent());
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response.getWriter().flush();
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} catch (Exception e) {
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log.error("生成m3u8文件失败: deviceId={}", deviceId, e);
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try {
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response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
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response.setContentType(MediaType.APPLICATION_JSON_VALUE);
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response.setCharacterEncoding(StandardCharsets.UTF_8.name());
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response.getWriter().write("{\"code\":500,\"message\":\"生成失败: " + e.getMessage() + "\"}");
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response.getWriter().flush();
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} catch (IOException ioException) {
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log.error("写入错误响应失败", ioException);
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}
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}
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}
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/**
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* 获取设备最近的视频片段信息
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* 仅返回视频片段列表，不包含m3u8内容
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*
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* @param deviceId 设备ID
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* @param durationMinutes 视频时长（分钟），默认2分钟
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* @return 视频片段列表
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*/
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@GetMapping("/segments")
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public ApiResponse<HlsStreamResponse> getVideoSegments(
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@RequestParam Long deviceId,
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@RequestParam(defaultValue = "2") Integer durationMinutes) {
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log.info("收到视频片段查询请求: deviceId={}, durationMinutes={}",
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deviceId, durationMinutes);
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try {
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HlsStreamRequest request = new HlsStreamRequest();
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request.setDeviceId(deviceId);
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request.setDurationMinutes(durationMinutes);
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request.setEventPlaylist(true);
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HlsStreamResponse response = hlsStreamService.generateHlsPlaylist(request);
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log.info("视频片段查询成功: deviceId={}, segmentCount={}",
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deviceId, response.getSegmentCount());
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return ApiResponse.success(response);
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} catch (Exception e) {
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log.error("查询视频片段失败: deviceId={}", deviceId, e);
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return ApiResponse.buildResponse(500, null, "查询失败: " + e.getMessage());
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}
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}
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}
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package com.ycwl.basic.model.mobile.video.dto;
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import lombok.Data;
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import jakarta.validation.constraints.NotNull;
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/**
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* HLS视频流请求参数
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* 用于生成设备视频的HLS播放列表
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*
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* @author Claude Code
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* @date 2025-12-26
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*/
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@Data
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public class HlsStreamRequest {
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/**
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* 设备ID
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*/
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@NotNull(message = "设备ID不能为空")
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private Long deviceId;
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/**
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* 视频时长（分钟），默认2分钟
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* 获取最近N分钟的视频
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*/
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private Integer durationMinutes = 2;
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/**
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* 是否为Event播放列表
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* true: 使用EVENT类型（适合固定时长的视频回放）
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* false: 使用VOD类型（适合点播）
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*/
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private Boolean eventPlaylist = true;
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}
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package com.ycwl.basic.model.mobile.video.dto;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import java.util.List;
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/**
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* HLS视频流响应
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* 包含生成的m3u8播放列表内容
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*
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* @author Claude Code
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* @date 2025-12-26
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*/
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@Data
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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public class HlsStreamResponse {
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/**
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* 设备ID
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*/
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private Long deviceId;
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/**
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* m3u8播放列表内容
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*/
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private String playlistContent;
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/**
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* 视频片段数量
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*/
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private Integer segmentCount;
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/**
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* 总时长（秒）
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*/
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private Double totalDurationSeconds;
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/**
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* 视频片段列表
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*/
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private List<VideoSegment> segments;
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/**
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* 播放列表类型（EVENT/VOD）
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*/
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private String playlistType;
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/**
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* 视频片段信息
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*/
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@Data
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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public static class VideoSegment {
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/**
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* 视频片段URL
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*/
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private String url;
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/**
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* 片段时长（秒）
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*/
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private Double duration;
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/**
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* 片段序号
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*/
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private Integer sequence;
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/**
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* 片段开始时间
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*/
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private String startTime;
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/**
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* 片段结束时间
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*/
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private String endTime;
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}
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}
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package com.ycwl.basic.service.mobile;
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import com.ycwl.basic.device.DeviceFactory;
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import com.ycwl.basic.device.entity.common.FileObject;
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import com.ycwl.basic.device.operator.IDeviceStorageOperator;
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import com.ycwl.basic.integration.device.dto.device.DeviceV2DTO;
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import com.ycwl.basic.integration.device.service.DeviceIntegrationService;
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import com.ycwl.basic.model.mobile.video.dto.HlsStreamRequest;
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import com.ycwl.basic.model.mobile.video.dto.HlsStreamResponse;
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import com.ycwl.basic.model.pc.device.entity.DeviceConfigEntity;
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import com.ycwl.basic.repository.DeviceRepository;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Service;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.stream.Collectors;
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/**
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* HLS视频流服务
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* 用于生成设备视频的HLS播放列表(m3u8)
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*
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* @author Claude Code
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* @date 2025-12-26
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*/
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@Slf4j
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@Service
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@RequiredArgsConstructor
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public class HlsStreamService {
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private final DeviceIntegrationService deviceIntegrationService;
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private final DeviceRepository deviceRepository;
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private static final String M3U8_HEADER = "#EXTM3U";
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private static final String M3U8_VERSION = "#EXT-X-VERSION:3";
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private static final String M3U8_MEDIA_SEQUENCE = "#EXT-X-MEDIA-SEQUENCE:0";
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private static final String M3U8_ALLOW_CACHE = "#EXT-X-ALLOW-CACHE:YES";
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private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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/**
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* 生成设备视频的HLS播放列表
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*
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* @param request HLS流请求参数
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* @return HLS播放列表响应
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*/
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public HlsStreamResponse generateHlsPlaylist(HlsStreamRequest request) {
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log.info("开始生成HLS播放列表: deviceId={}, durationMinutes={}",
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request.getDeviceId(), request.getDurationMinutes());
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try {
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// 获取设备信息
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DeviceV2DTO device = deviceIntegrationService.getDevice(request.getDeviceId());
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if (device == null) {
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throw new RuntimeException("设备不存在: " + request.getDeviceId());
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}
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// 获取设备配置
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DeviceConfigEntity config = deviceRepository.getDeviceConfig(request.getDeviceId());
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if (config == null) {
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throw new RuntimeException("设备配置不存在: " + request.getDeviceId());
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}
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// 获取设备的存储操作器
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IDeviceStorageOperator operator = DeviceFactory.getDeviceStorageOperator(device, config);
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if (operator == null) {
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throw new RuntimeException("设备未配置存储操作器: " + request.getDeviceId());
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}
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// 计算时间范围：当前时间向前N分钟
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Calendar calendar = Calendar.getInstance();
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Date endDate = calendar.getTime();
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calendar.add(Calendar.MINUTE, -request.getDurationMinutes());
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Date startDate = calendar.getTime();
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log.info("查询视频文件范围: deviceId={}, startDate={}, endDate={}",
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request.getDeviceId(), DATE_FORMAT.format(startDate), DATE_FORMAT.format(endDate));
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// 获取视频文件列表
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List<FileObject> fileList = operator.getFileListByDtRange(startDate, endDate);
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if (fileList == null || fileList.isEmpty()) {
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log.warn("未找到视频文件: deviceId={}, startDate={}, endDate={}",
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request.getDeviceId(), DATE_FORMAT.format(startDate), DATE_FORMAT.format(endDate));
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return buildEmptyResponse(request.getDeviceId(), request.getEventPlaylist());
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}
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// 按创建时间排序（升序）
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fileList.sort(Comparator.comparing(FileObject::getCreateTime));
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log.info("找到 {} 个视频文件", fileList.size());
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|
||||||
|
// 生成播放列表
|
||||||
|
return buildHlsResponse(request.getDeviceId(), fileList, request.getEventPlaylist());
|
||||||
|
|
||||||
|
} catch (Exception e) {
|
||||||
|
log.error("生成HLS播放列表失败: deviceId={}", request.getDeviceId(), e);
|
||||||
|
throw new RuntimeException("生成HLS播放列表失败: " + e.getMessage(), e);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 构建HLS响应
|
||||||
|
*
|
||||||
|
* @param deviceId 设备ID
|
||||||
|
* @param fileList 视频文件列表
|
||||||
|
* @param isEventPlaylist 是否为Event播放列表
|
||||||
|
* @return HLS响应
|
||||||
|
*/
|
||||||
|
private HlsStreamResponse buildHlsResponse(Long deviceId, List<FileObject> fileList, Boolean isEventPlaylist) {
|
||||||
|
StringBuilder m3u8Content = new StringBuilder();
|
||||||
|
List<HlsStreamResponse.VideoSegment> segments = new ArrayList<>();
|
||||||
|
|
||||||
|
// 添加m3u8头部
|
||||||
|
m3u8Content.append(M3U8_HEADER).append("\n");
|
||||||
|
m3u8Content.append(M3U8_VERSION).append("\n");
|
||||||
|
|
||||||
|
// 设置播放列表类型
|
||||||
|
String playlistType = Boolean.TRUE.equals(isEventPlaylist) ? "EVENT" : "VOD";
|
||||||
|
m3u8Content.append("#EXT-X-PLAYLIST-TYPE:").append(playlistType).append("\n");
|
||||||
|
|
||||||
|
// 计算目标时长（使用视频片段的平均时长）
|
||||||
|
double avgDuration = calculateAverageDuration(fileList);
|
||||||
|
int targetDuration = (int) Math.ceil(avgDuration);
|
||||||
|
m3u8Content.append("#EXT-X-TARGETDURATION:").append(targetDuration).append("\n");
|
||||||
|
|
||||||
|
m3u8Content.append(M3U8_MEDIA_SEQUENCE).append("\n");
|
||||||
|
m3u8Content.append(M3U8_ALLOW_CACHE).append("\n");
|
||||||
|
|
||||||
|
// 添加视频片段
|
||||||
|
double totalDuration = 0.0;
|
||||||
|
int sequence = 0;
|
||||||
|
|
||||||
|
for (FileObject file : fileList) {
|
||||||
|
// 计算片段时长（秒）
|
||||||
|
double duration = calculateSegmentDuration(file);
|
||||||
|
totalDuration += duration;
|
||||||
|
|
||||||
|
// 添加片段信息到m3u8
|
||||||
|
m3u8Content.append("#EXTINF:").append(String.format("%.3f", duration)).append(",\n");
|
||||||
|
m3u8Content.append(file.getUrl().replace("-internal.aliyuncs.com", ".aliyuncs.com")).append("\n");
|
||||||
|
|
||||||
|
// 记录片段信息
|
||||||
|
HlsStreamResponse.VideoSegment segment = HlsStreamResponse.VideoSegment.builder()
|
||||||
|
.url(file.getUrl())
|
||||||
|
.duration(duration)
|
||||||
|
.sequence(sequence++)
|
||||||
|
.startTime(file.getCreateTime() != null ? DATE_FORMAT.format(file.getCreateTime()) : null)
|
||||||
|
.endTime(file.getEndTime() != null ? DATE_FORMAT.format(file.getEndTime()) : null)
|
||||||
|
.build();
|
||||||
|
segments.add(segment);
|
||||||
|
}
|
||||||
|
|
||||||
|
// 添加结束标记（VOD类型需要）
|
||||||
|
if (!"EVENT".equals(playlistType)) {
|
||||||
|
m3u8Content.append("#EXT-X-ENDLIST\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
return HlsStreamResponse.builder()
|
||||||
|
.deviceId(deviceId)
|
||||||
|
.playlistContent(m3u8Content.toString())
|
||||||
|
.segmentCount(fileList.size())
|
||||||
|
.totalDurationSeconds(totalDuration)
|
||||||
|
.segments(segments)
|
||||||
|
.playlistType(playlistType)
|
||||||
|
.build();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 构建空响应
|
||||||
|
*/
|
||||||
|
private HlsStreamResponse buildEmptyResponse(Long deviceId, Boolean isEventPlaylist) {
|
||||||
|
String playlistType = Boolean.TRUE.equals(isEventPlaylist) ? "EVENT" : "VOD";
|
||||||
|
StringBuilder m3u8Content = new StringBuilder();
|
||||||
|
|
||||||
|
m3u8Content.append(M3U8_HEADER).append("\n");
|
||||||
|
m3u8Content.append(M3U8_VERSION).append("\n");
|
||||||
|
m3u8Content.append("#EXT-X-PLAYLIST-TYPE:").append(playlistType).append("\n");
|
||||||
|
m3u8Content.append("#EXT-X-TARGETDURATION:0\n");
|
||||||
|
m3u8Content.append(M3U8_MEDIA_SEQUENCE).append("\n");
|
||||||
|
|
||||||
|
if (!"EVENT".equals(playlistType)) {
|
||||||
|
m3u8Content.append("#EXT-X-ENDLIST\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
return HlsStreamResponse.builder()
|
||||||
|
.deviceId(deviceId)
|
||||||
|
.playlistContent(m3u8Content.toString())
|
||||||
|
.segmentCount(0)
|
||||||
|
.totalDurationSeconds(0.0)
|
||||||
|
.segments(Collections.emptyList())
|
||||||
|
.playlistType(playlistType)
|
||||||
|
.build();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 计算视频片段的平均时长（秒）
|
||||||
|
*/
|
||||||
|
private double calculateAverageDuration(List<FileObject> fileList) {
|
||||||
|
if (fileList == null || fileList.isEmpty()) {
|
||||||
|
return 10.0; // 默认10秒
|
||||||
|
}
|
||||||
|
|
||||||
|
List<Double> durations = fileList.stream()
|
||||||
|
.map(this::calculateSegmentDuration)
|
||||||
|
.filter(d -> d > 0)
|
||||||
|
.collect(Collectors.toList());
|
||||||
|
|
||||||
|
if (durations.isEmpty()) {
|
||||||
|
return 10.0; // 默认10秒
|
||||||
|
}
|
||||||
|
|
||||||
|
return durations.stream()
|
||||||
|
.mapToDouble(Double::doubleValue)
|
||||||
|
.average()
|
||||||
|
.orElse(10.0);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* 计算单个视频片段的时长（秒）
|
||||||
|
*/
|
||||||
|
private double calculateSegmentDuration(FileObject file) {
|
||||||
|
if (file.getCreateTime() != null && file.getEndTime() != null) {
|
||||||
|
long durationMs = file.getEndTime().getTime() - file.getCreateTime().getTime();
|
||||||
|
if (durationMs > 0) {
|
||||||
|
return durationMs / 1000.0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// 如果无法计算，返回默认值10秒
|
||||||
|
return 10.0;
|
||||||
|
}
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user