Feature: add MediaRecordController

AndroidMedia/src/main/java/com/frank/androidmedia/controller/MediaRecordController.kt

@@ -0,0 +1,71 @@
+package com.frank.androidmedia.controller
+
+import android.hardware.Camera
+import android.media.CamcorderProfile
+import android.media.MediaRecorder
+import android.util.Log
+import android.view.Surface
+
+/**
+ * Using MediaRecorder to record a media file.
+ *
+ * @author frank
+ * @date 2022/3/21
+ */
+open class MediaRecordController {
+
+    private var mCamera: Camera? = null
+    private var mMediaRecorder: MediaRecorder? = null
+
+    private fun initMediaRecord(surface: Surface, outputPath: String) {
+        // open camera
+        mCamera = Camera.open()
+        mCamera!!.setDisplayOrientation(90)
+        mCamera!!.unlock()
+        // Note: pay attention to calling order
+        mMediaRecorder?.setCamera(mCamera)
+        mMediaRecorder?.setAudioSource(MediaRecorder.AudioSource.MIC)
+        mMediaRecorder?.setVideoSource(MediaRecorder.VideoSource.CAMERA)
+        mMediaRecorder?.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
+        mMediaRecorder?.setAudioEncoder(MediaRecorder.AudioEncoder.AAC)
+        mMediaRecorder?.setVideoEncoder(MediaRecorder.VideoEncoder.H264)
+        mMediaRecorder?.setOutputFile(outputPath)
+        mMediaRecorder?.setPreviewDisplay(surface)
+    }
+
+    fun startRecord(surface: Surface, outputPath: String) {
+        if (mMediaRecorder == null) {
+            mMediaRecorder = MediaRecorder()
+        }
+
+        initMediaRecord(surface, outputPath)
+
+        try {
+            mMediaRecorder?.prepare()
+            mMediaRecorder?.start()
+        } catch (e: Exception) {
+            Log.e("MediaRecorder", "start recorder error=$e")
+        }
+        Log.i("MediaRecorder", "startRecord...")
+    }
+
+    fun stopRecord() {
+        if (mMediaRecorder != null) {
+            mMediaRecorder?.stop()
+            mMediaRecorder?.reset()
+        }
+        mCamera?.stopPreview()
+        Log.i("MediaRecorder", "stopRecord...")
+    }
+
+    fun release() {
+        if (mMediaRecorder != null) {
+            mMediaRecorder?.release()
+            mMediaRecorder = null
+        }
+        if (mCamera != null) {
+            mCamera!!.release()
+            mCamera!!.lock()
+        }
+    }
+}