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我正在尝试在我的 CI 服务器上获取失败测试的视频。

目标是在每次测试时开始截屏，然后当它失败时将视频保存在某个地方，当它通过时，删除视频。CI 服务器将使用 adb 获取文件。

我正在考虑screenrecord为此目的使用。我认为这很容易，因为这个二进制文件已经存在于设备上，并且在通过 ADB 使用时效果非常好。

这是我以编程方式使用它的方式：打开一个线程，它将启动并跟踪该过程，并在测试开始之前启动它：

@Before
fun baseBefore() {
    startScreenRecording()
}

private fun startScreenRecording() {
    Timber.d("screenrecord: start record thread")
    screenRecordThread = Thread(screenRecordRunnable)
    screenRecordThread.start()
    Timber.d("screenrecord: wait a bit")
    Thread.sleep(5000)
    Timber.d("screenrecord: go")
}

我正在等待 5 秒钟，因为screenrecord可能需要一些时间才能启动。

这是实际的screenrecord调用：

private class ScreenRecordRunnable : Runnable {
    private lateinit var process: Process

    override fun run() {
        try {
            Timber.d("screenrecord-record: start")

// tried also with the following: no luck
//          process = ProcessBuilder(
//                  "/system/bin/screenrecord",
//                  "--time-limit", "60",
//                  "--verbose",
//                  "--bit-rate", "4M",
//                  "--bugreport",
//                  "/sdcard/test.mp4",
//                  "&"
//          )
//                  .redirectErrorStream(true)
//                  .start()

           process = Runtime.getRuntime().exec("/system/bin/screenrecord --time-limit 60 --verbose --bit-rate 4M --bugreport /sdcard/test.mp4")
            val reader = BufferedReader(InputStreamReader(process.inputStream))
            while (true) {
                val line = reader.readLine() ?: break
                Timber.d("screenrecord-record: log: $line")
            }

            Timber.d("screenrecord-record: wait for (isAlive: ${process.isAlive})")
            process.waitFor()

            Timber.d("screenrecord-record: wait stopped; exit value: ${process.exitValue()}")
            reader.close()
        } catch (e: IOException) {
            throw Exception(e)
        } catch (e: InterruptedException) {
            throw Exception(e)
        }
    }
}

在该@After方法中，我检索screenrecord进程的 PID（通过pgrep，它可以工作）并发送它kill -2 $pid，以模拟该进程上的 Ctrl-C，以停止屏幕录制。
不包括此代码，因为它似乎不相关。

这是正在发生的事情：

12-16 21:11:31.527  5487  5543 D InstrumentedTestBase: screenrecord: start record thread
12-16 21:11:31.528  5487  5543 D InstrumentedTestBase: screenrecord: wait a bit
12-16 21:11:31.528  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: start
12-16 21:11:31.633  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Main display is 1440x2960 @60.00fps (orientation=0)
12-16 21:11:31.633  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Configuring recorder for 1440x2960 video/avc at 4.00Mbps
12-16 21:11:32.362  5574  5574 W screenrecord: type=1400 audit(0.0:22906): avc: denied { read } for name="u:object_r:vendor_default_prop:s0" dev="tmpfs" ino=19753 scontext=u:r:untrusted_app:s0:c242,c256,c512,c768 tcontext=u:object_r:vendor_default_prop:s0 tclass=file permissive=0
12-16 21:11:32.492  5574  5574 W screenrecord: type=1400 audit(0.0:22907): avc: denied { read } for name="u:object_r:vendor_default_prop:s0" dev="tmpfs" ino=19753 scontext=u:r:untrusted_app:s0:c242,c256,c512,c768 tcontext=u:object_r:vendor_default_prop:s0 tclass=file permissive=0
12-16 21:11:32.543  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Bugreport overlay created
12-16 21:11:32.544  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Content area is 1440x2960 at offset x=0 y=0
12-16 21:11:39.780  5487  5543 D InstrumentedTestBase: screenrecord: go
12-16 21:11:43.546  5487  5543 D InstrumentedTestBase: screenrecord: wait for record thread to stop
12-16 21:11:43.546  5487  5543 D InstrumentedTestBase$ScreenRecordStopperRunnable: screenrecord-stopper: get pid
12-16 21:11:43.578  5487  5543 D InstrumentedTestBase$ScreenRecordStopperRunnable: screenrecord-stopper: getpid log: 5574
12-16 21:11:43.579  5487  5543 D InstrumentedTestBase$ScreenRecordStopperRunnable: screenrecord-stopper: kill -2 5574
12-16 21:11:43.679  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Encoder stopping; recorded 1 frames in 7 seconds
12-16 21:11:43.680  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Stopping encoder and muxer
12-16 21:11:43.784  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Executing: /system/bin/am broadcast -a android.intent.action.MEDIA_SCANNER_SCAN_FILE -d file:///sdcard/test.mp4
12-16 21:11:43.860  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: log: Broadcasting: Intent { act=android.intent.action.MEDIA_SCANNER_SCAN_FILE dat=file:///sdcard/test.mp4 flg=0x400000 }
12-16 21:11:43.919  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: wait for (isAlive: true)
12-16 21:11:43.919  5487  5573 D InstrumentedTestBase$ScreenRecordRunnable: screenrecord-record: wait stopped; exit value: 0
12-16 21:11:44.013  5487  5543 D InstrumentedTestBase: screenrecord: rename video file to /sdcard/failed_test_emptyDeclarationState.mp4

如您所见，一切看起来都很好，除了只保存了一帧：

编码器停止；在 7 秒内记录 1 帧

该框架是--bugreport结果，带有设备信息（品牌、型号等）。

我能做些什么来捕捉该测试的视频吗？

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