Allow setting GST_DEBUG on Android through mach

Cargo.lock

@@ -4819,6 +4819,7 @@ dependencies = [
  "android_injected_glue",
  "android_logger",
  "cc",
+ "gstreamer",
  "jni",
  "libc",
  "log",

ports/libsimpleservo/jniapi/Cargo.toml

@@ -16,6 +16,7 @@ bench = false
 [dependencies]
 android_injected_glue = "0.2"
 android_logger = "0.7"
+gstreamer = "0.14.5"
 jni = "0.10.2"
 libc = "0.2"
 log = "0.4"

ports/libsimpleservo/jniapi/src/lib.rs

@@ -8,6 +8,7 @@
 extern crate log;
 
 use android_logger::{self, Filter};
+use gstreamer::debug_set_threshold_from_string;
 use jni::objects::{GlobalRef, JClass, JObject, JString, JValue};
 use jni::sys::{jboolean, jfloat, jint, jstring, JNI_TRUE};
 use jni::{errors, JNIEnv, JavaVM};
@@ -53,8 +54,8 @@ pub fn Java_org_mozilla_servoview_JNIServo_init(
     opts: JObject,
     callbacks_obj: JObject,
 ) {
-    let (mut opts, log, log_str) = match get_options(&env, opts) {
+    let (mut opts, log, log_str, gst_debug_str) = match get_options(&env, opts) {
-        Ok((opts, log, log_str)) => (opts, log, log_str),
+        Ok((opts, log, log_str, gst_debug_str)) => (opts, log, log_str, gst_debug_str),
         Err(err) => {
             throw(&env, &err);
             return;
@@ -86,6 +87,11 @@ pub fn Java_org_mozilla_servoview_JNIServo_init(
                 filter = filter.with_allowed_module_path(module);
             }
         }
+
+        if let Some(gst_debug_str) = gst_debug_str {
+            debug_set_threshold_from_string(&gst_debug_str, true);
+        }
+
         android_logger::init_once(filter, Some("simpleservo"));
     }
 
@@ -734,10 +740,14 @@ fn get_string(env: &JNIEnv, obj: JObject, field: &str) -> Result<Option<String>,
     }
 }
 
-fn get_options(env: &JNIEnv, opts: JObject) -> Result<(InitOptions, bool, Option<String>), String> {
+fn get_options(
+    env: &JNIEnv,
+    opts: JObject,
+) -> Result<(InitOptions, bool, Option<String>, Option<String>), String> {
     let args = get_string(env, opts, "args")?;
     let url = get_string(env, opts, "url")?;
     let log_str = get_string(env, opts, "logStr")?;
+    let gst_debug_str = get_string(env, opts, "gstDebugStr")?;
     let density = get_non_null_field(env, opts, "density", "F")?
         .f()
         .map_err(|_| "densitiy not a float")? as f32;
@@ -782,5 +792,5 @@ fn get_options(env: &JNIEnv, opts: JObject) -> Result<(InitOptions, bool, Option
         gl_context_pointer: None,
         native_display_pointer: None,
     };
-    Ok((opts, log, log_str))
+    Ok((opts, log, log_str, gst_debug_str))
 }

python/servo/post_build_commands.py

@@ -102,6 +102,9 @@ class PostBuildCommands(CommandBase):
             rust_log = env.get("RUST_LOG", None)
             if rust_log:
                 extra += " -e servolog " + rust_log
+            gst_debug = env.get("GST_DEBUG", None)
+            if gst_debug:
+                extra += " -e gstdebug " + gst_debug
             script += [
                 "am start " + extra + " org.mozilla.servo/org.mozilla.servo.MainActivity",
                 "sleep 0.5",

support/android/apk/servoapp/src/main/java/org/mozilla/servo/MainActivity.java

@@ -76,7 +76,8 @@ public class MainActivity extends Activity implements Servo.Client {
         Intent intent = getIntent();
         String args = intent.getStringExtra("servoargs");
         String log = intent.getStringExtra("servolog");
-        mServoView.setServoArgs(args, log);
+        String gstdebug = intent.getStringExtra("gstdebug");
+        mServoView.setServoArgs(args, log, gstdebug);
 
         if (Intent.ACTION_VIEW.equals(intent.getAction())) {
           mServoView.loadUri(intent.getData());

support/android/apk/servoview/src/main/java/org/mozilla/servoview/JNIServo.java

@@ -74,6 +74,7 @@ public class JNIServo {
       public boolean enableSubpixelTextAntialiasing = true;
       public long VRExternalContext = 0;
       public String logStr;
+      public String gstDebugStr;
       public boolean enableLogs = false;
     }
 

support/android/apk/servoview/src/main/java/org/mozilla/servoview/ServoView.java

@@ -45,6 +45,7 @@ public class ServoView extends GLSurfaceView
     private boolean mAnimating;
     private String mServoArgs;
     private String mServoLog;
+    private String mGstDebug;
     private GestureDetector mGestureDetector;
     private ScaleGestureDetector mScaleGestureDetector;
 
@@ -90,9 +91,10 @@ public class ServoView extends GLSurfaceView
         initGestures(context);
     }
 
-    public void setServoArgs(String args, String log) {
+    public void setServoArgs(String args, String log, String gstdebug) {
         mServoArgs = args;
         mServoLog = log;
+        mGstDebug = gstdebug;
     }
 
     public void reload() {
@@ -176,6 +178,7 @@ public class ServoView extends GLSurfaceView
             String uri = mInitialUri == null ? null : mInitialUri.toString();
             options.url = uri;
             options.logStr = mServoLog;
+            options.gstDebugStr = mGstDebug;
             mServo = new Servo(options, this, this, mClient, mActivity);
         });
     }