refine

app/src/cli.c

@@ -552,9 +552,12 @@ static const struct sc_option options[] = {
         .longopt_id = OPT_VIRTUAL_DISPLAY,
         .longopt = "virtual-display",
         .argdesc = "properties",
+        .optional_arg = true,
         .text = "Start a new virtual display for your applications to "
                 "launch into. Requires Android version >= 10. "
-                "Display size and DPI may be specified. e.g. 1920x1080dpi300"
+                "Display size and DPI may be specified. e.g. 1920x1080dpi300\n"
+                "Comma separated extra launch arguments may be passed to am start.\n"
+                "e.g. 1920x1080dpi300,-a,android.intent.action.MAIN,-n,com.android.settings/.applications.ManageApplications"
     },
     {
         .shortopt = 's',
@@ -2005,7 +2008,7 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
                 opts->su_quirk = true;
                 break;
             case OPT_VIRTUAL_DISPLAY:
-                opts->virtual_display_params = optarg;
+                opts->virtual_display_params = optarg ?: "";
                 break;
             default:
                 // getopt prints the error message on stderr

server/src/main/java/com/genymobile/scrcpy/wrappers/DisplayManager.java

@@ -3,6 +3,7 @@ package com.genymobile.scrcpy.wrappers;
 import com.genymobile.scrcpy.Command;
 import com.genymobile.scrcpy.DisplayInfo;
 import com.genymobile.scrcpy.FakeContext;
+import com.genymobile.scrcpy.IO;
 import com.genymobile.scrcpy.Ln;
 import com.genymobile.scrcpy.Size;
 
@@ -12,7 +13,10 @@ import android.os.Build;
 import android.view.Display;
 import android.view.Surface;
 
+import java.io.IOException;
 import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -29,10 +33,11 @@ public final class DisplayManager {
         final int VIRTUAL_DISPLAY_FLAG_ALWAYS_UNLOCKED = 1 << 12;
         try {
             if (displayParams == null || displayParams.isEmpty()) displayParams = "1920x1080dpi300";
-            String resolution = displayParams.toLowerCase().split("dpi")[0];
+            String[] displayParamsArray = displayParams.split(",");
+            String resolution = displayParamsArray[0].toLowerCase().split("dpi")[0];
             int width = Integer.parseInt(resolution.split("x")[0]);
             int height = Integer.parseInt(resolution.split("x")[1]);
-            int dpi = Integer.parseInt(displayParams.toLowerCase().split("dpi")[1]);
+            int dpi = Integer.parseInt(displayParamsArray[0].toLowerCase().split("dpi")[1]);
             android.hardware.display.DisplayManager displayManager = (android.hardware.display.DisplayManager)Class.forName("android.hardware.display.DisplayManager").getConstructor(Class.forName("android.content.Context")).newInstance(FakeContext.get());
             SurfaceTexture surfaceTexture = new SurfaceTexture(false);
             Surface surface = new Surface(surfaceTexture);
@@ -43,9 +48,26 @@ public final class DisplayManager {
                         | android.hardware.display.DisplayManager.VIRTUAL_DISPLAY_FLAG_SECURE
                         | VIRTUAL_DISPLAY_FLAG_TRUSTED
                         | VIRTUAL_DISPLAY_FLAG_ALWAYS_UNLOCKED);
+            Ln.i(String.format("Display: %d", display[0].getDisplay().getDisplayId()));
             // start launcher
             // TODO: replace shell commands with proper android framework api call
-            Command.exec("am", "start", "--user", "0", "--display", Integer.toString(display[0].getDisplay().getDisplayId()), "-a", "android.intent.action.MAIN", "-c", "android.intent.category.HOME", "-c", "android.intent.category.DEFAULT");
+            String[] cmd;
+            if (displayParamsArray.length == 1) {
+                cmd = new String[]{"am", "start", "--user", "0", "--display", Integer.toString(display[0].getDisplay().getDisplayId()), "-a", "android.intent.action.MAIN", "-c", "android.intent.category.HOME", "-c", "android.intent.category.DEFAULT"};
+            }
+            else {
+                ArrayList<String> command = new ArrayList<>(Arrays.asList("am", "start", "--display", Integer.toString(display[0].getDisplay().getDisplayId())));
+                command.addAll(Arrays.asList(Arrays.copyOfRange(displayParamsArray, 1, displayParamsArray.length)));
+                cmd = command.toArray(new String[0]);
+            }
+            Process process = Runtime.getRuntime().exec(cmd);
+            String output = IO.toString(process.getInputStream());
+            String error = IO.toString(process.getErrorStream());
+            int exitCode = process.waitFor();
+            if (exitCode != 0) {
+                throw new IOException("Command " + Arrays.toString(cmd) + " returned with value " + exitCode);
+            }
+            Ln.i(String.format("stdout: %s\nstderr: %s", output.trim(), error.trim()));
             return display[0];
         } catch (Exception e) {
             throw new AssertionError(e);