update final design

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MathTec/Assets/Samples/Assets/DeviceSupport/VideoRecording/Scripts/CameraRecorder.cs

+//================================================================================================================================
+//
+//  Copyright (c) 2015-2021 VisionStar Information Technology (Shanghai) Co., Ltd. All Rights Reserved.
+//  EasyAR is the registered trademark or trademark of VisionStar Information Technology (Shanghai) Co., Ltd in China
+//  and other countries for the augmented reality technology developed by VisionStar Information Technology (Shanghai) Co., Ltd.
+//
+//================================================================================================================================
+
+using easyar;
+using UnityEngine;
+
+namespace VideoRecording
+{
+    public class CameraRecorder : MonoBehaviour
+    {
+        private VideoRecorder videoRecorder;
+        private Material externalMaterial;
+        private RenderTexture rt;
+
+        public void OnRenderImage(RenderTexture source, RenderTexture destination)
+        {
+            Graphics.Blit(source, destination);
+            if (videoRecorder)
+            {
+                if (externalMaterial)
+                {
+                    if (rt && (rt.width != source.width || rt.height != source.height))
+                    {
+                        Destroy(rt);
+                    }
+                    if (!rt)
+                    {
+                        rt = new RenderTexture(source.width, source.height, 0);
+                    }
+                    Graphics.Blit(source, rt, externalMaterial);
+                    videoRecorder.RecordFrame(rt);
+                }
+                else
+                {
+                    videoRecorder.RecordFrame(source);
+                }
+            }
+        }
+
+        public void Setup(VideoRecorder recorder, Material material)
+        {
+            videoRecorder = recorder;
+            externalMaterial = material;
+        }
+
+        public void Destroy()
+        {
+            if (rt)
+            {
+                Destroy(rt);
+            }
+            Destroy(this);
+        }
+    }
+}

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MathTec/Assets/Samples/Assets/DeviceSupport/VideoRecording/Scripts/RecordingSample.cs

+//================================================================================================================================
+//
+//  Copyright (c) 2015-2021 VisionStar Information Technology (Shanghai) Co., Ltd. All Rights Reserved.
+//  EasyAR is the registered trademark or trademark of VisionStar Information Technology (Shanghai) Co., Ltd in China
+//  and other countries for the augmented reality technology developed by VisionStar Information Technology (Shanghai) Co., Ltd.
+//
+//================================================================================================================================
+
+using easyar;
+using System;
+using UnityEngine;
+
+namespace VideoRecording
+{
+    public class RecordingSample : MonoBehaviour
+    {
+        public bool RecordWatermark;
+        public Material WatermarkMaterial;
+        public GameObject Cube;
+
+        private VideoRecorder videoRecorder;
+        private string filePath;
+        private CameraRecorder cameraRecorder;
+        private GameObject cube;
+
+        private void Awake()
+        {
+            cube = Instantiate(Cube);
+            videoRecorder = FindObjectOfType<VideoRecorder>();
+            videoRecorder.FilePathType = WritablePathType.PersistentDataPath;
+            videoRecorder.StatusUpdate += (status, msg) =>
+            {
+                if (status == RecordStatus.OnStarted)
+                {
+                    GUIPopup.EnqueueMessage("Recording start", 5);
+                }
+                if (status == RecordStatus.FailedToStart || status == RecordStatus.FileFailed || status == RecordStatus.LogError)
+                {
+                    GUIPopup.EnqueueMessage("Recording Error: " + status + ", details: " + msg, 5);
+                }
+                Debug.Log("RecordStatus: " + status + ", details: " + msg);
+            };
+        }
+
+        private void OnDestroy()
+        {
+            if (cube)
+            {
+                Destroy(cube);
+            }
+        }
+
+        public void SampleStart()
+        {
+            if (!videoRecorder)
+            {
+                return;
+            }
+            if (!videoRecorder.IsReady)
+            {
+                return;
+            }
+
+            if (cube)
+            {
+                Destroy(cube);
+            }
+            cube = Instantiate(Cube);
+            filePath = "EasyAR_Recording_" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss") + ".mp4";
+            videoRecorder.FilePath = filePath;
+            videoRecorder.StartRecording();
+            cameraRecorder = Camera.main.gameObject.AddComponent<CameraRecorder>();
+            cameraRecorder.Setup(videoRecorder, WatermarkMaterial);
+            if (RecordWatermark)
+            {
+                cameraRecorder.Setup(videoRecorder, WatermarkMaterial);
+            }
+            else
+            {
+                cameraRecorder.Setup(videoRecorder, null);
+            }
+        }
+
+        public void SampleStop()
+        {
+            if (!videoRecorder)
+            {
+                return;
+            }
+            if (videoRecorder.StopRecording())
+            {
+                GUIPopup.EnqueueMessage("Recording finished, video saved to Unity Application.persistentDataPath" + Environment.NewLine +
+                    "Filename: " + filePath + Environment.NewLine +
+                    "PersistentDataPath: " + Application.persistentDataPath + Environment.NewLine +
+                    "You can change sample code if you prefer to record videos into system album", 8);
+                AdjustVideoAndPlay();
+            }
+            else
+            {
+                GUIPopup.EnqueueMessage("Recording failed", 5);
+            }
+            if (cameraRecorder)
+            {
+                cameraRecorder.Destroy();
+            }
+        }
+
+        private void AdjustVideoAndPlay()
+        {
+            if (!cube)
+            {
+                return;
+            }
+            var player = cube.GetComponent<UnityEngine.Video.VideoPlayer>();
+            player.transform.localScale = new Vector3(1, (float)Screen.height / Screen.width, 1);
+
+            if (player.isPlaying)
+            {
+                player.Stop();
+            }
+            player.url = FileUtil.PathToUrl(Application.persistentDataPath + "/" + filePath);
+            player.Play();
+
+            // Unity bug: https://issuetracker.unity3d.com/issues/android-video-player-cannot-play-files-located-in-the-persistent-data-directory-on-android-10
+            // more info in this thread: https://forum.unity.com/threads/error-videoplayer-on-android.742451/
+            // We are not going to fix or workaround this bug here, the video playback is just a visual feedback for recording result but not a recording feature. You can still find your recorded videos in the directory.
+#if UNITY_ANDROID && !UNITY_EDITOR
+            int sdkVersion = 0;
+            using (var buildVersion = new AndroidJavaClass("android.os.Build$VERSION"))
+            {
+                sdkVersion = buildVersion.GetStatic<int>("SDK_INT");
+            }
+            if (sdkVersion >= 29)
+            {
+                GUIPopup.EnqueueMessage("Video recorded may not play on cube due to Unity VideoPlayer bug on Android Q", 5);
+            }
+#endif
+        }
+    }
+}

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MathTec/Assets/Samples/Assets/DeviceSupport/VideoRecording/Shaders/RecordingWatermark.shader

+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+//================================================================================================================================
+//
+//  Copyright (c) 2015-2021 VisionStar Information Technology (Shanghai) Co., Ltd. All Rights Reserved.
+//  EasyAR is the registered trademark or trademark of VisionStar Information Technology (Shanghai) Co., Ltd in China
+//  and other countries for the augmented reality technology developed by VisionStar Information Technology (Shanghai) Co., Ltd.
+//
+//================================================================================================================================
+
+Shader "Sample/RecordingWatermark" {
+        Properties {
+            _MainTex ("Base (RGB)", 2D) = "white" {}
+            _Logo("Logo (RGBA)", 2D) = "white" {}
+            _X("X (0, 1)", Range(0, 1)) = 0.8
+            _Y("Y (0, 1)", Range(0, 1)) = 0.8
+            _W("W (0, 1)", Range(0.01, 1)) = 0.15
+            _H("H (0, 1)", Range(0.01, 1)) = 0.15
+        }
+        SubShader {
+        Pass {
+            Tags { "RenderType" = "Transparents" }
+
+            Blend SrcAlpha OneMinusSrcAlpha
+
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            sampler2D _MainTex;
+            float4 _MainTex_ST;
+
+            sampler2D _Logo;
+            float4 _Logo_ST;
+
+            float _X;
+            float _Y;
+            float _W;
+            float _H;
+
+            struct v2f {
+                float4 pos:SV_POSITION;
+                float4 uv : TEXCOORD0;
+            };
+
+            v2f vert (appdata_base v) {
+                v2f o;
+                o.pos = o.pos = UnityObjectToClipPos (v.vertex);
+                o.uv = v.texcoord;
+                return o;
+            }
+
+            fixed4 frag (v2f i) : COLOR0 {
+
+                float x = 0.0;
+                float y = 0.0;
+                if (_ScreenParams.y >= _ScreenParams.x)
+                {
+                    x = i.uv.x - _X;
+                    y = i.uv.y - _Y * (_ScreenParams.x / _ScreenParams.y);
+                    x = x / _W;
+                    y = y / (_H * _ScreenParams.x / _ScreenParams.y);
+                }
+                else
+                {
+                    x = i.uv.x - _X * (_ScreenParams.y / _ScreenParams.x);
+                    y = i.uv.y - _Y;
+                    x = x / (_W * _ScreenParams.y / _ScreenParams.x);
+                    y = y / _H ;
+                }
+
+                fixed4 color = 0.0;
+                if (x > 1 || x < 0 || y < 0 || y > 1)
+                {
+                    color = tex2D(_MainTex, i.uv.xy);
+                }
+                else
+                {
+                    color = tex2D(_Logo, float2(x, y));
+                    if (color.a == 0.0)
+                    {
+                        color = tex2D(_MainTex, i.uv.xy);
+                    }
+                }
+                return color;
+            }
+
+            ENDCG
+        }
+    }
+}

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