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Add RemotingAppLauncher and DefaultRemotingApp
The RemotingAppLauncher instantiates RemotingApps at runtime. It uses the app manifest to find class names of RemotingApps, and loads them via reflection. The DefaultRemotingApp is a simple wrapper around the default media receiver application. Bug: 790766 Change-Id: I01f51ebe90de361b947d67fe904a2faddc35f5de Reviewed-on: https://chromium-review.googlesource.com/c/1306778 Reviewed-by: Zhiqiang Zhang <zqzhang@chromium.org> Reviewed-by: David Trainor <dtrainor@chromium.org> Commit-Queue: Thomas Guilbert <tguilbert@chromium.org> Cr-Commit-Position: refs/heads/master@{#605389}
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56 changes: 56 additions & 0 deletions
56
...d/java/src/org/chromium/chrome/browser/media/router/cast/remoting/DefaultRemotingApp.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // Copyright 2018 The Chromium Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| package org.chromium.chrome.browser.media.router.cast.remoting; | ||
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| import com.google.android.gms.cast.CastMediaControlIntent; | ||
| import com.google.android.gms.common.api.GoogleApiClient; | ||
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| import org.chromium.base.annotations.UsedByReflection; | ||
| import org.chromium.chrome.browser.UrlConstants; | ||
| import org.chromium.chrome.browser.media.router.MediaSource; | ||
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| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
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| /** | ||
| * App corresponding to the default media receiver application. | ||
| */ | ||
| @UsedByReflection("RemotingAppLauncher.java") | ||
| public class DefaultRemotingApp implements RemotingAppLauncher.RemotingApp { | ||
| private static final String TAG = "DefaultRmtApp"; | ||
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| public DefaultRemotingApp() {} | ||
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| // RemotingApp implementation | ||
| @Override | ||
| public boolean canPlayMedia(RemotingMediaSource source) { | ||
| try { | ||
| String scheme = new URI(source.getMediaUrl()).getScheme(); | ||
| if (scheme == null) return false; | ||
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| return scheme.equals(UrlConstants.HTTP_SCHEME) | ||
| || scheme.equals(UrlConstants.HTTPS_SCHEME); | ||
| } catch (URISyntaxException e) { | ||
| return false; | ||
| } | ||
| } | ||
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| @Override | ||
| public String getApplicationId() { | ||
| // Can be overriden downstream. | ||
| return CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID; | ||
| } | ||
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| @Override | ||
| public boolean hasCustomLoad() { | ||
| // Can be overriden downstream. | ||
| return false; | ||
| } | ||
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| @Override | ||
| public void load(GoogleApiClient client, long startTime, MediaSource source) { | ||
| // Can be overriden downstream. | ||
| } | ||
| } |
129 changes: 129 additions & 0 deletions
129
.../java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingAppLauncher.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // Copyright 2018 The Chromium Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
|
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| package org.chromium.chrome.browser.media.router.cast.remoting; | ||
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| import android.app.Activity; | ||
| import android.content.pm.ApplicationInfo; | ||
| import android.content.pm.PackageManager; | ||
| import android.content.pm.PackageManager.NameNotFoundException; | ||
| import android.os.Bundle; | ||
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| import com.google.android.gms.common.api.GoogleApiClient; | ||
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| import org.chromium.base.ApplicationStatus; | ||
| import org.chromium.base.Log; | ||
| import org.chromium.chrome.browser.media.router.MediaSource; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| /** | ||
| * Class that manages the instantiation of RemotingApps. | ||
| * | ||
| * A RemotingApp is essentially a wrapper around an application ID. We use them to protect certain | ||
| * application IDs in downstream code, and to override some app specific logic. The IDs correspond | ||
| * to Cast receiver apps. | ||
| * | ||
| * The types of RemotingApps are discovered by reflection. We find the class names via the | ||
| * REMOTE_PLAYBACK_APPS_KEY in AndroidManifest.xml. This allows us to specify different apps in the | ||
| * default chromium manifest, versus the official Chrome on Android manifest. | ||
| */ | ||
| public class RemotingAppLauncher { | ||
| private static final String TAG = "RemoteAppLnchr"; | ||
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| // This is a key for meta-data in the package manifest. | ||
| private static final String REMOTE_PLAYBACK_APPS_KEY = | ||
| "org.chromium.content.browser.REMOTE_PLAYBACK_APPS"; | ||
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| private static RemotingAppLauncher sInstance; | ||
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| /** | ||
| * Interface that represents a Cast receiver app, that is compatible with remote playback. | ||
| */ | ||
| public interface RemotingApp { | ||
| /** | ||
| * Returns true if the given app supports the source | ||
| */ | ||
| public boolean canPlayMedia(RemotingMediaSource source); | ||
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| /** | ||
| * Returns the application ID of the receiver app. | ||
| * NOTE: This string should not be added to logs, since this can be overriden | ||
| * by downstream and we would leak internal app IDs. | ||
| */ | ||
| public String getApplicationId(); | ||
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| /** | ||
| * Returns true if RemoteMediaPlayer.load() should be avoided, and RemotingApp.load() should | ||
| * be called instead. | ||
| */ | ||
| public boolean hasCustomLoad(); | ||
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| /** | ||
| * Loads the given source, at the given start time, for the already connected client. | ||
| */ | ||
| public void load(GoogleApiClient client, long startTime, MediaSource source); | ||
| } | ||
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| private List<RemotingApp> mRemotingApps = new ArrayList<RemotingApp>(); | ||
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| /** | ||
| * The private constructor to make sure the object is only created by the instance() method. | ||
| */ | ||
| private RemotingAppLauncher() {} | ||
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| private void createRemotingApps() { | ||
| // We only need to do this once | ||
| if (!mRemotingApps.isEmpty()) return; | ||
| try { | ||
| Activity currentActivity = ApplicationStatus.getLastTrackedFocusedActivity(); | ||
| ApplicationInfo ai = currentActivity.getPackageManager().getApplicationInfo( | ||
| currentActivity.getPackageName(), PackageManager.GET_META_DATA); | ||
| Bundle bundle = ai.metaData; | ||
| String classNameString = bundle.getString(REMOTE_PLAYBACK_APPS_KEY); | ||
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| if (classNameString != null) { | ||
| String[] classNames = classNameString.split(","); | ||
| for (String className : classNames) { | ||
| Log.d(TAG, "Adding remoting app %s", className.trim()); | ||
| Class<?> remotingAppClass = Class.forName(className.trim()); | ||
| Object remotingApp = remotingAppClass.newInstance(); | ||
| mRemotingApps.add((RemotingApp) remotingApp); | ||
| } | ||
| } | ||
| } catch (NameNotFoundException | ClassNotFoundException | SecurityException | ||
| | InstantiationException | IllegalAccessException | IllegalArgumentException e) { | ||
| // Should never happen, implies corrupt AndroidManifest | ||
| Log.e(TAG, "Couldn't instatiate RemotingApps", e); | ||
| assert false; | ||
| } | ||
| } | ||
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| /** | ||
| * Returns the first RemotingApp that can support the given source, or null if none are found. | ||
| */ | ||
| public RemotingApp getRemotingApp(MediaSource source) { | ||
| if (!(source instanceof RemotingMediaSource)) return null; | ||
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| for (RemotingApp app : mRemotingApps) { | ||
| if (app.canPlayMedia((RemotingMediaSource) source)) { | ||
| return app; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
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| /** | ||
| * The singleton instance access method. | ||
| */ | ||
| public static RemotingAppLauncher instance() { | ||
| if (sInstance == null) { | ||
| sInstance = new RemotingAppLauncher(); | ||
| sInstance.createRemotingApps(); | ||
| } | ||
|
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| return sInstance; | ||
| } | ||
| } |
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