| | |
| | | } |
| | | |
| | | /** |
| | | * 检查内部 Flash(非 TF 卡)剩余空间,如果小于 800MB,则按时间顺序删除 h264_*.h264 文件 |
| | | * 目录:context.getExternalFilesDir(null).getAbsolutePath() |
| | | * 文件名格式示例:h264_1735023032000.h264、h264_camera2_1735023032000.h264 |
| | | * |
| | | * 删除规则: |
| | | * - 按文件名中的时间戳从小到大(越早越先删)依次删除 |
| | | * - 每删除一次后重新计算剩余空间,直到 ≥ 800MB 或文件删完 |
| | | * |
| | | * 返回值: |
| | | * - 0:最终剩余空间 ≥ 800MB 或无需删除 |
| | | * - -1:删除完所有符合规则的文件后,剩余空间仍然 < 800MB |
| | | */ |
| | | public static int ensureInternalFlashSpaceForH264(Context context) { |
| | | if (context == null) { |
| | | Timber.w("ensureInternalFlashSpaceForH264: context is null"); |
| | | return 0; |
| | | } |
| | | |
| | | File externalDir = context.getExternalFilesDir(null); |
| | | if (externalDir == null) { |
| | | Timber.w("ensureInternalFlashSpaceForH264: external files dir is null"); |
| | | return 0; |
| | | } |
| | | |
| | | String basePath = externalDir.getAbsolutePath(); |
| | | long minFreeBytes = 800L * 1024L * 1024L; // 800MB |
| | | |
| | | long freeBytes = getFreeSpaceBytes(basePath); |
| | | Timber.d("ensureInternalFlashSpaceForH264: freeBytes=%d, minRequired=%d", freeBytes, minFreeBytes); |
| | | |
| | | if (freeBytes >= minFreeBytes) { |
| | | // 空间充足,无需处理 |
| | | return 0; |
| | | } |
| | | |
| | | // 收集符合命名规则的 h264 文件 |
| | | File[] files = externalDir.listFiles(); |
| | | if (files == null || files.length == 0) { |
| | | Timber.w("ensureInternalFlashSpaceForH264: no files in dir -> %s", basePath); |
| | | // 已经没有可删的文件,如果仍小于 800MB,则直接返回 -1 |
| | | return freeBytes >= minFreeBytes ? 0 : -1; |
| | | } |
| | | |
| | | class H264FileInfo { |
| | | File file; |
| | | long timestamp; |
| | | |
| | | H264FileInfo(File file, long timestamp) { |
| | | this.file = file; |
| | | this.timestamp = timestamp; |
| | | } |
| | | } |
| | | |
| | | List<H264FileInfo> h264Files = new ArrayList<>(); |
| | | for (File file : files) { |
| | | if (!file.isFile()) { |
| | | continue; |
| | | } |
| | | |
| | | String name = file.getName(); |
| | | // 只处理 .h264 结尾,且以 h264_ 开头的文件 |
| | | if (!name.toLowerCase(Locale.CHINA).endsWith(".h264")) { |
| | | continue; |
| | | } |
| | | if (!name.startsWith("h264_") && !name.startsWith("h264_camera2_")) { |
| | | continue; |
| | | } |
| | | |
| | | // 提取时间戳部分 |
| | | String timePart = null; |
| | | if (name.startsWith("h264_camera2_")) { |
| | | // 前缀长度 13:"h264_camera2_" |
| | | timePart = name.substring("h264_camera2_".length(), name.length() - ".h264".length()); |
| | | } else if (name.startsWith("h264_")) { |
| | | // 前缀长度 5:"h264_" |
| | | timePart = name.substring("h264_".length(), name.length() - ".h264".length()); |
| | | } |
| | | |
| | | if (timePart == null || timePart.isEmpty()) { |
| | | continue; |
| | | } |
| | | |
| | | try { |
| | | long ts = Long.parseLong(timePart); |
| | | h264Files.add(new H264FileInfo(file, ts)); |
| | | } catch (NumberFormatException e) { |
| | | // 文件名不符合时间戳格式,跳过 |
| | | Timber.w("ensureInternalFlashSpaceForH264: invalid timestamp in file name -> %s", name); |
| | | } |
| | | } |
| | | |
| | | if (h264Files.isEmpty()) { |
| | | Timber.w("ensureInternalFlashSpaceForH264: no matched h264 files in -> %s", basePath); |
| | | return freeBytes >= minFreeBytes ? 0 : -1; |
| | | } |
| | | |
| | | // 按时间戳升序排列(越早的越先删) |
| | | Collections.sort(h264Files, new Comparator<H264FileInfo>() { |
| | | @Override |
| | | public int compare(H264FileInfo o1, H264FileInfo o2) { |
| | | return Long.compare(o1.timestamp, o2.timestamp); |
| | | } |
| | | }); |
| | | |
| | | int deletedCount = 0; |
| | | for (H264FileInfo info : h264Files) { |
| | | if (freeBytes >= minFreeBytes) { |
| | | break; |
| | | } |
| | | |
| | | File f = info.file; |
| | | long size = f.length(); |
| | | Timber.d("ensureInternalFlashSpaceForH264: deleting file -> %s, size=%d, ts=%d", |
| | | f.getAbsolutePath(), size, info.timestamp); |
| | | |
| | | if (f.delete()) { |
| | | deletedCount++; |
| | | // 删除后重新获取剩余空间,更准确 |
| | | freeBytes = getFreeSpaceBytes(basePath); |
| | | Timber.d("ensureInternalFlashSpaceForH264: after delete, freeBytes=%d", freeBytes); |
| | | } else { |
| | | Timber.e("ensureInternalFlashSpaceForH264: failed to delete file -> %s", f.getAbsolutePath()); |
| | | } |
| | | } |
| | | |
| | | Timber.i("ensureInternalFlashSpaceForH264: deleted %d files, final freeBytes=%d", deletedCount, freeBytes); |
| | | |
| | | return freeBytes >= minFreeBytes ? 0 : -1; |
| | | } |
| | | |
| | | /** |
| | | * 计算目录下所有 .h264 文件的总大小(字节) |
| | | */ |
| | | private static long calculateH264FilesSize(File dir) { |
| | |
| | | } |
| | | |
| | | /** |
| | | * 获取指定路径的剩余空间(字节) |
| | | */ |
| | | private static long getFreeSpaceBytes(String path) { |
| | | try { |
| | | StatFs statFs = new StatFs(path); |
| | | long blockSize = statFs.getBlockSizeLong(); |
| | | long availableBlocks = statFs.getAvailableBlocksLong(); |
| | | return availableBlocks * blockSize; |
| | | } catch (Exception e) { |
| | | Timber.e(e, "Error getting free space (bytes) for path: %s", path); |
| | | return 0; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 递归删除目录及其所有内容 |
| | | */ |
| | | private static boolean deleteDirectory(File dir) { |