add enable directx option, android software encoding half resolution option (#8435)

* add option enable directx capture screen, default true

Signed-off-by: 21pages <sunboeasy@gmail.com>

* option android software encoding half scale, check isStart flag

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>

flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt

@@ -103,6 +103,9 @@ class MainService : Service() {
                     put("scale",SCREEN_INFO.scale)
                 }.toString()
             }
+            "is_start" -> {
+                isStart.toString()
+            }
             else -> ""
         }
     }
@@ -172,10 +175,10 @@ class MainService : Service() {
                 Log.d(logTag, "from rust:stop_capture")
                 stopCapture()
             }
-            "is_hardware_codec" -> {
-                val isHwCodec = arg1.toBoolean()
-                if (isHardwareCodec != isHwCodec) {
-                    isHardwareCodec = isHwCodec
+            "half_scale" -> {
+                val halfScale = arg1.toBoolean()
+                if (isHalfScale != halfScale) {
+                    isHalfScale = halfScale
                     updateScreenInfo(resources.configuration.orientation)
                 }
                 
@@ -251,7 +254,7 @@ class MainService : Service() {
         super.onDestroy()
     }
 
-    private var isHardwareCodec: Boolean? = null;
+    private var isHalfScale: Boolean? = null;
     private fun updateScreenInfo(orientation: Int) {
         var w: Int
         var h: Int
@@ -284,7 +287,7 @@ class MainService : Service() {
         Log.d(logTag,"updateScreenInfo:w:$w,h:$h")
         var scale = 1
         if (w != 0 && h != 0) {
-            if (isHardwareCodec == false && (w > MAX_SCREEN_SIZE || h > MAX_SCREEN_SIZE)) {
+            if (isHalfScale == true && (w > MAX_SCREEN_SIZE || h > MAX_SCREEN_SIZE)) {
                 scale = 2
                 w /= scale
                 h /= scale

flutter/lib/consts.dart

@@ -134,6 +134,7 @@ const String kOptionEnableCheckUpdate = "enable-check-update";
 const String kOptionAllowLinuxHeadless = "allow-linux-headless";
 const String kOptionAllowRemoveWallpaper = "allow-remove-wallpaper";
 const String kOptionStopService = "stop-service";
+const String kOptionDirectxCapture = "enable-directx-capture";
 
 const String kOptionToggleViewOnly = "view-only";
 

flutter/lib/desktop/pages/desktop_setting_page.dart

@@ -315,11 +315,11 @@ class _GeneralState extends State<_General> {
           children: [
             service(),
             theme(),
+            _Card(title: 'Language', children: [language()]),
             hwcodec(),
             audio(context),
             record(context),
             WaylandCard(),
-            _Card(title: 'Language', children: [language()]),
             other()
           ],
         ).marginOnly(bottom: _kListViewBottomMargin));
@@ -413,6 +413,12 @@ class _GeneralState extends State<_General> {
             'Check for software update on startup',
             kOptionEnableCheckUpdate,
             isServer: false,
+          ),
+        if (isWindows && !bind.isOutgoingOnly())
+          _OptionCheckBox(
+            context,
+            'Capture screen using DirectX',
+            kOptionDirectxCapture,
           )
       ],
     ];

libs/hbb_common/src/config.rs

@@ -2084,6 +2084,9 @@ pub mod keys {
     pub const OPTION_KEY: &str = "key";
     pub const OPTION_PRESET_ADDRESS_BOOK_NAME: &str = "preset-address-book-name";
     pub const OPTION_PRESET_ADDRESS_BOOK_TAG: &str = "preset-address-book-tag";
+    pub const OPTION_ENABLE_DIRECTX_CAPTURE: &str = "enable-directx-capture";
+    pub const OPTION_ENABLE_ANDRIOD_SOFTWARE_ENCODING_HALF_SCALE: &str =
+        "enable-andriod-software-encoding-half-scale";
 
     // flutter local options
     pub const OPTION_FLUTTER_REMOTE_MENUBAR_STATE: &str = "remoteMenubarState";
@@ -2206,6 +2209,8 @@ pub mod keys {
         OPTION_KEY,
         OPTION_PRESET_ADDRESS_BOOK_NAME,
         OPTION_PRESET_ADDRESS_BOOK_TAG,
+        OPTION_ENABLE_DIRECTX_CAPTURE,
+        OPTION_ENABLE_ANDRIOD_SOFTWARE_ENCODING_HALF_SCALE,
     ];
 }
 

libs/scrap/src/common/android.rs

@@ -182,3 +182,8 @@ fn get_size() -> Option<(u16, u16, u16)> {
     }
     None
 }
+
+pub fn is_start() -> Option<bool> {
+    let res = call_main_service_get_by_name("is_start").ok()?;
+    Some(res == "true")
+}

libs/scrap/src/common/codec.rs

@@ -21,8 +21,8 @@ use crate::{
 use hbb_common::{
     anyhow::anyhow,
     bail,
-    config::PeerConfig,
-    log,
+    config::{keys::OPTION_ENABLE_HWCODEC, option2bool, Config, PeerConfig},
+    lazy_static, log,
     message_proto::{
         supported_decoding::PreferCodec, video_frame, Chroma, CodecAbility, EncodedVideoFrames,
         SupportedDecoding, SupportedEncoding, VideoFrame,
@@ -31,8 +31,6 @@ use hbb_common::{
     tokio::time::Instant,
     ResultType,
 };
-#[cfg(any(feature = "hwcodec", feature = "mediacodec", feature = "vram"))]
-use hbb_common::{config::Config2, lazy_static};
 
 lazy_static::lazy_static! {
     static ref PEER_DECODINGS: Arc<Mutex<HashMap<i32, SupportedDecoding>>> = Default::default();
@@ -201,7 +199,7 @@ impl Encoder {
         #[allow(unused_mut)]
         let mut h265vram_encoding = false;
         #[cfg(feature = "vram")]
-        if enable_vram_option() {
+        if enable_vram_option(true) {
             if _all_support_h264_decoding {
                 if VRamEncoder::available(CodecFormat::H264).len() > 0 {
                     h264vram_encoding = true;
@@ -340,7 +338,7 @@ impl Encoder {
             encoding.h265 |= HwRamEncoder::try_get(CodecFormat::H265).is_some();
         }
         #[cfg(feature = "vram")]
-        if enable_vram_option() {
+        if enable_vram_option(true) {
             encoding.h264 |= VRamEncoder::available(CodecFormat::H264).len() > 0;
             encoding.h265 |= VRamEncoder::available(CodecFormat::H265).len() > 0;
         }
@@ -451,7 +449,7 @@ impl Decoder {
             };
         }
         #[cfg(feature = "vram")]
-        if enable_vram_option() && _use_texture_render {
+        if enable_vram_option(false) && _use_texture_render {
             decoding.ability_h264 |= if VRamDecoder::available(CodecFormat::H264, _luid).len() > 0 {
                 1
             } else {
@@ -530,7 +528,7 @@ impl Decoder {
             }
             CodecFormat::H264 => {
                 #[cfg(feature = "vram")]
-                if !valid && enable_vram_option() && _luid.clone().unwrap_or_default() != 0 {
+                if !valid && enable_vram_option(false) && _luid.clone().unwrap_or_default() != 0 {
                     match VRamDecoder::new(format, _luid) {
                         Ok(v) => h264_vram = Some(v),
                         Err(e) => log::error!("create H264 vram decoder failed: {}", e),
@@ -556,7 +554,7 @@ impl Decoder {
             }
             CodecFormat::H265 => {
                 #[cfg(feature = "vram")]
-                if !valid && enable_vram_option() && _luid.clone().unwrap_or_default() != 0 {
+                if !valid && enable_vram_option(false) && _luid.clone().unwrap_or_default() != 0 {
                     match VRamDecoder::new(format, _luid) {
                         Ok(v) => h265_vram = Some(v),
                         Err(e) => log::error!("create H265 vram decoder failed: {}", e),
@@ -839,19 +837,37 @@ impl Decoder {
 #[cfg(any(feature = "hwcodec", feature = "mediacodec"))]
 pub fn enable_hwcodec_option() -> bool {
     if cfg!(windows) || cfg!(target_os = "linux") || cfg!(target_os = "android") {
-        if let Some(v) = Config2::get().options.get("enable-hwcodec") {
-            return v != "N";
-        }
-        return true; // default is true
+        return option2bool(
+            OPTION_ENABLE_HWCODEC,
+            &Config::get_option(OPTION_ENABLE_HWCODEC),
+        );
     }
     false
 }
 #[cfg(feature = "vram")]
-pub fn enable_vram_option() -> bool {
-    if let Some(v) = Config2::get().options.get("enable-hwcodec") {
-        return v != "N";
+pub fn enable_vram_option(encode: bool) -> bool {
+    if cfg!(windows) {
+        let enable = option2bool(
+            OPTION_ENABLE_HWCODEC,
+            &Config::get_option(OPTION_ENABLE_HWCODEC),
+        );
+        if encode {
+            enable && enable_directx_capture()
+        } else {
+            enable
+        }
+    } else {
+        false
     }
-    return true; // default is true
+}
+
+#[cfg(windows)]
+pub fn enable_directx_capture() -> bool {
+    use hbb_common::config::keys::OPTION_ENABLE_DIRECTX_CAPTURE as OPTION;
+    option2bool(
+        OPTION,
+        &Config::get_option(hbb_common::config::keys::OPTION_ENABLE_DIRECTX_CAPTURE),
+    )
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]

libs/scrap/src/common/mod.rs

@@ -491,3 +491,8 @@ pub trait GoogleImage {
 pub fn screen_size() -> (u16, u16, u16) {
     SCREEN_SIZE.lock().unwrap().clone()
 }
+
+#[cfg(target_os = "android")]
+pub fn is_start() -> Option<bool> {
+    android::is_start()
+}

libs/scrap/src/common/vram.rs

@@ -354,7 +354,7 @@ impl VRamDecoder {
     }
 
     pub fn possible_available_without_check() -> (bool, bool) {
-        if !enable_vram_option() {
+        if !enable_vram_option(false) {
             return (false, false);
         }
         let v = crate::hwcodec::HwCodecConfig::get().vram_decode;

src/lang/ar.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/bg.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ca.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/cn.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "从不"),
         ("During controlled", "被控期间"),
         ("During service is on", "服务开启期间"),
+        ("Capture screen using DirectX", "使用 DirectX 捕获屏幕"),
     ].iter().cloned().collect();
 }

src/lang/cs.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Nikdy"),
         ("During controlled", "Během řízeného"),
         ("During service is on", "Během služby je v provozu"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/da.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/de.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Niemals"),
         ("During controlled", "Wenn kontrolliert"),
         ("During service is on", "Wenn der Dienst läuft"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/el.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/eo.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/es.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Nunca"),
         ("During controlled", "Mientras está siendo controlado"),
         ("During service is on", "Mientras el servicio está activo"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/et.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/fa.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/fr.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/he.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/hr.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/hu.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/id.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/it.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Mai"),
         ("During controlled", "Durante il controllo"),
         ("During service is on", "Quando il servizio è attivo"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ja.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ko.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/kz.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/lt.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/lv.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Nekad"),
         ("During controlled", "Lietošanas laikā"),
         ("During service is on", "Kamēr pakalpojums ir ieslēgts"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/nb.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/nl.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/pl.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/pt_PT.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ptbr.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ro.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ru.rs

@@ -125,7 +125,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Good image quality", "Лучшее качество изображения"),
         ("Balanced", "Баланс между качеством и откликом"),
         ("Optimize reaction time", "Лучшее время отклика"),
-        ("Custom", "Заданное пользователем"), 
+        ("Custom", "Заданное пользователем"),
         ("Show remote cursor", "Показывать удалённый курсор"),
         ("Show quality monitor", "Показывать монитор качества"),
         ("Disable clipboard", "Отключить буфер обмена"),
@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Нет"),
         ("During controlled", "При управлении"),
         ("During service is on", "При запущенной службе"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/sk.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "Nikdy"),
         ("During controlled", "Počas kontrolovaného"),
         ("During service is on", "Počas služby je v prevádzke"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/sl.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/sq.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/sr.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/sv.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/template.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/th.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/tr.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/tw.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", "從不"),
         ("During controlled", "被控期間"),
         ("During service is on", "服務開啟期間"),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/ua.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/lang/vn.rs

@@ -621,5 +621,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Never", ""),
         ("During controlled", ""),
         ("During service is on", ""),
+        ("Capture screen using DirectX", ""),
     ].iter().cloned().collect();
 }

src/server/video_service.rs

@@ -407,7 +407,11 @@ fn run(vs: VideoService) -> ResultType<()> {
     let display_idx = vs.idx;
     let sp = vs.sp;
     let mut c = get_capturer(display_idx, last_portable_service_running)?;
-
+    #[cfg(windows)]
+    if !scrap::codec::enable_directx_capture() && !c.is_gdi() {
+        log::info!("disable dxgi with option, fall back to gdi");
+        c.set_gdi();
+    }
     let mut video_qos = VIDEO_QOS.lock().unwrap();
     video_qos.refresh(None);
     let mut spf;
@@ -837,16 +841,33 @@ fn get_recorder(
 
 #[cfg(target_os = "android")]
 fn check_change_scale(hardware: bool) -> ResultType<()> {
+    use hbb_common::config::keys::OPTION_ENABLE_ANDRIOD_SOFTWARE_ENCODING_HALF_SCALE as SCALE_SOFT;
+
+    // isStart flag is set at the end of startCapture() in Android, wait it to be set.
+    for i in 0..6 {
+        if scrap::is_start() == Some(true) {
+            log::info!("start flag is set");
+            break;
+        }
+        log::info!("wait for start, {i}");
+        std::thread::sleep(Duration::from_millis(50));
+        if i == 5 {
+            log::error!("wait for start timeout");
+        }
+    }
     let screen_size = scrap::screen_size();
-    log::info!("hardware: {hardware}, screen_size: {screen_size:?}",);
+    let scale_soft = hbb_common::config::option2bool(SCALE_SOFT, &Config::get_option(SCALE_SOFT));
+    let half_scale = !hardware && scale_soft;
+    log::info!("hardware: {hardware}, scale_soft: {scale_soft}, screen_size: {screen_size:?}",);
     scrap::android::call_main_service_set_by_name(
-        "is_hardware_codec",
-        Some(hardware.to_string().as_str()),
+        "half_scale",
+        Some(half_scale.to_string().as_str()),
         None,
     )
     .ok();
     let old_scale = screen_size.2;
     let new_scale = scrap::screen_size().2;
+    log::info!("old_scale: {old_scale}, new_scale: {new_scale}");
     if old_scale != new_scale {
         log::info!("switch due to scale changed, {old_scale} -> {new_scale}");
         // switch is not a must, but it is better to do so.