Beta support for webrtc video and voice calling

// FREEBIE

res/drawable/circle_alpha.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="oval" >
+    <solid android:color="#22000000" />
+</shape>

res/drawable/webrtc_audio_button.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/compoundBackgroundItem" android:drawable="@drawable/webrtc_control_background"/>
+
+    <item android:id="@+id/moreIndicatorItem"
+          android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp">
+        <bitmap android:src="@drawable/redphone_ic_more_indicator_holo_dark"
+                android:gravity="bottom|right" />
+    </item>
+
+    <item android:id="@+id/bluetoothItem"
+          android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp">
+        <bitmap android:src="@drawable/ic_phone_bluetooth_speaker_white_24dp"
+                android:gravity="center" />
+    </item>
+
+    <!-- Handset earpiece is active -->
+    <item android:id="@+id/handsetItem" android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp">
+        <bitmap android:src="@drawable/ic_phone_in_talk_white_24dp"
+                android:gravity="center" />
+    </item>
+
+    <!-- Speakerphone icon showing 'speaker on' state -->
+    <item android:id="@+id/speakerphoneOnItem" android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp">
+        <bitmap android:src="@drawable/ic_volume_up_white_24dp"
+                android:gravity="center" />
+    </item>
+
+    <!--&lt;!&ndash; Speakerphone icon showing 'speaker off' state &ndash;&gt;-->
+    <!--<item android:id="@+id/speakerphoneOffItem">-->
+        <!--<bitmap android:src="@drawable/ic_volume_mute_white_24dp"-->
+                <!--android:gravity="center" />-->
+    <!--</item>-->
+
+</layer-list>

res/drawable/webrtc_control_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/circle_alpha" android:state_checked="true"/>
+    <item android:drawable="@android:color/transparent" />
+</selector>

res/drawable/webrtc_mute_button.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/webrtc_control_background"/>
+    <item android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp"
+          android:drawable="@drawable/ic_mic_off_white_24dp"/>
+</layer-list>

res/drawable/webrtc_video_mute_button.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/webrtc_control_background"/>
+    <item android:top="5dp"
+          android:left="5dp"
+          android:right="5dp"
+          android:bottom="5dp"
+          android:drawable="@drawable/ic_videocam_white_24dp"/>
+</layer-list>

res/layout/webrtc_call_activity.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="fill_parent"
+              android:layout_height="fill_parent">
+
+    <org.thoughtcrime.securesms.components.webrtc.WebRtcCallScreen android:id="@+id/callScreen"
+                                                                   android:layout_width="fill_parent"
+                                                                   android:layout_height="fill_parent" />
+
+
+</FrameLayout>

res/layout/webrtc_call_controls.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+                    xmlns:tools="http://schemas.android.com/tools"
+              android:id="@+id/inCallControls"
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:orientation="horizontal"
+              tools:background="@color/textsecure_primary">
+
+        <ToggleButton android:id="@+id/audioButton"
+                      style="@style/WebRtcCallCompoundButton"
+                      android:background="@drawable/webrtc_audio_button"
+                      tools:checked="true"
+                      android:layout_marginRight="15dp"/>
+
+
+        <ToggleButton android:id="@+id/muteButton"
+                      style="@style/WebRtcCallCompoundButton"
+                      android:background="@drawable/webrtc_mute_button"
+                      android:contentDescription="@string/redphone_call_controls__mute"
+                      android:layout_marginRight="15dp"
+                      tools:checked="false"
+                />
+
+        <ToggleButton android:id="@+id/video_mute_button"
+                      style="@style/WebRtcCallCompoundButton"
+                      android:background="@drawable/webrtc_video_mute_button"/>
+
+</merge>

res/layout/webrtc_call_screen.xml

@@ -0,0 +1,249 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2007 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             xmlns:tools="http://schemas.android.com/tools"
+             xmlns:app="http://schemas.android.com/apk/res-auto"
+             android:id="@+id/incall_screen"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent">
+
+    <!-- "Call info" block #1, for the foreground call. -->
+    <RelativeLayout android:id="@+id/call_info_1"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent">
+
+        <!-- Contact photo for call_info_1 -->
+        <FrameLayout android:id="@+id/image_container"
+                     android:layout_below="@+id/call_banner_1"
+                     android:gravity="top|center_horizontal"
+                     android:layout_width="match_parent"
+                     android:layout_height="match_parent">
+
+            <ImageView android:id="@+id/photo"
+                       android:layout_width="match_parent"
+                       android:layout_height="match_parent"
+                       android:background="@android:color/black"
+                       android:scaleType="centerCrop"
+                       android:visibility="visible"
+                       tools:src="@drawable/ic_contact_picture_large"
+                    />
+
+            <LinearLayout android:id="@+id/untrusted_layout"
+                          android:layout_width="match_parent"
+                          android:layout_height="match_parent"
+                          android:background="@color/grey_400"
+                          android:orientation="vertical"
+                          android:visibility="gone"
+                          android:gravity="center">
+
+                <TextView android:id="@+id/untrusted_explanation"
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:layout_gravity="center"
+                          android:textSize="16sp"
+                          android:maxWidth="270dp"
+                          android:lineSpacingExtra="2sp"
+                          tools:text="The safety numbers for your conversation with Masha have changed. This could either mean that someone is trying to intercept your communication, or that Masha simply re-installed Signal. You may wish to verify safety numbers for this contact."/>
+
+                <LinearLayout
+                        android:layout_marginTop="20dp"
+                        android:maxWidth="250dp"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content">
+
+                    <Button android:id="@+id/accept_safety_numbers"
+                            android:text="Accept"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_marginRight="10dp"/>
+
+                    <Button android:id="@+id/cancel_safety_numbers"
+                            android:text="Cancel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"/>
+
+                </LinearLayout>
+
+
+            </LinearLayout>
+
+            <org.thoughtcrime.securesms.components.webrtc.PercentFrameLayout
+                    android:id="@+id/remote_render_layout"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    tools:visibility="invisible"/>
+
+            <org.thoughtcrime.securesms.components.webrtc.PercentFrameLayout
+                    android:id="@+id/local_render_layout"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    tools:visibility="invisible"/>
+
+        </FrameLayout>
+
+        <!-- "Call Banner" for call #1, the foregound or ringing call.
+             The "call banner" is a block of info about a single call,
+             including the contact name, phone number, call time counter,
+             and other status info.  This info is shown as a "banner"
+             overlaid across the top of contact photo. -->
+        <RelativeLayout android:id="@+id/call_banner_1"
+                        android:layout_alignParentTop="true"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:minHeight="80dp"
+                        android:paddingLeft="24dp"
+                        android:paddingRight="24dp"
+                        android:paddingTop="16dp"
+                        android:paddingBottom="16dp"
+                        android:background="@color/textsecure_primary"
+                >
+
+            <!-- Name (or the phone number, if we don't have a name to display). -->
+            <TextView android:id="@+id/name"
+                      android:layout_alignParentTop="true"
+                      android:layout_alignParentLeft="true"
+                      android:layout_width="match_parent"
+                      android:layout_height="wrap_content"
+                      android:paddingRight="50sp"
+                      android:textSize="40sp"
+                      android:textColor="#FFFFFF"
+                      android:singleLine="true"
+                      android:maxLines="1"
+                      android:ellipsize="end"
+                      tools:text="Ali Connors"
+                    />
+
+            <!-- Label (like "Mobile" or "Work", if present) and phone number, side by side -->
+            <LinearLayout android:id="@+id/labelAndNumber"
+                          android:layout_below="@id/name"
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:paddingRight="50sp"
+                          android:orientation="horizontal"
+                    >
+                <TextView android:id="@+id/label"
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:textColor="#FFFFFF"
+                          android:singleLine="true"
+                          android:textAppearance="?android:attr/textAppearanceSmall"
+                          android:text="@string/redphone_call_card__signal_call"
+                          android:layout_marginRight="10dp"
+                        />
+                <TextView android:id="@+id/phoneNumber"
+                          android:layout_width="wrap_content"
+                          android:layout_height="wrap_content"
+                          android:textAppearance="?android:attr/textAppearanceSmall"
+                          android:textColor="#FFFFFF"
+                          android:singleLine="true"
+                          tools:text="+14152222222"
+                        />
+
+            </LinearLayout>
+
+            <!-- Elapsed time indication for a call in progress. -->
+            <TextView android:id="@+id/elapsedTime"
+                      android:layout_alignParentRight="true"
+                      android:layout_centerVertical="true"
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:textAppearance="?android:attr/textAppearanceMedium"
+                      android:textColor="#FFFFFF"
+                      android:singleLine="true"
+                    />
+
+            <!-- Call type indication: a special label and/or branding
+                 for certain kinds of calls (like "Internet call" for a SIP call.) -->
+            <TextView android:id="@+id/callTypeLabel"
+                      android:layout_below="@id/labelAndNumber"
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:textAppearance="?android:attr/textAppearanceSmall"
+                      android:textColor="#FFFFFF"
+                      android:maxLines="1"
+                      android:ellipsize="end"
+                      android:visibility="gone"
+                      android:text="@string/redphone_call_card__signal_call"
+                    />
+
+            <!-- Social status (currently unused) -->
+            <TextView android:id="@+id/socialStatus"
+                      android:layout_below="@id/callTypeLabel"
+                      android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:textAppearance="?android:attr/textAppearanceSmall"
+                      android:textColor="#FFFFFF"
+                      android:maxLines="2"
+                      android:ellipsize="end"
+                    />
+
+            <org.thoughtcrime.securesms.components.webrtc.WebRtcCallControls
+                    android:id="@+id/inCallControls"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
+                    android:layout_marginBottom="15dp"
+                    android:layout_centerHorizontal="true"
+                    android:layout_below="@id/labelAndNumber"/>
+
+
+        </RelativeLayout>  <!-- End of call_banner for call_info #1. -->
+
+        <!-- The "call state label": In some states, this shows a special
+             indication like "Dialing" or "Incoming call" or "Call ended".
+             It's unused for the normal case of an active ongoing call. -->
+        <!-- This is visually part of the call banner, but it's not actually
+             part of the "call_banner_1" RelativeLayout since it needs a
+             different background color. -->
+        <TextView android:id="@+id/callStateLabel"
+                  android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:layout_below="@id/call_banner_1"
+                  android:gravity="right"
+                  android:paddingTop="8dp"
+                  android:paddingBottom="8dp"
+                  android:paddingRight="24dp"
+                  android:textAppearance="?android:attr/textAppearanceSmall"
+                  android:textColor="#FFFFFF"
+                  android:textAllCaps="true"
+                  android:background="#8033b5e5"
+                  tools:text="connected"
+                />
+
+        <android.support.design.widget.FloatingActionButton
+                android:id="@+id/hangup_fab"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="50dp"
+                android:layout_alignParentBottom="true"
+                android:layout_centerHorizontal="true"
+                android:src="@drawable/ic_call_end_white_48dp"
+                android:focusable="true"
+                app:backgroundTint="@color/red_500"
+                android:visibility="visible"
+                android:contentDescription="End call"
+                tools:visibility="visible"/>
+
+    </RelativeLayout>
+
+    <org.thoughtcrime.securesms.components.webrtc.WebRtcIncomingCallOverlay
+            android:id="@+id/callControls"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            />
+
+</FrameLayout>

res/layout/webrtc_incoming_call_overlay.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
+
+    <org.thoughtcrime.redphone.util.multiwaveview.MultiWaveView
+            android:id="@+id/incomingCallWidget"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentBottom="true"
+            android:layout_marginBottom="-46dp"
+            android:background="@android:color/black"
+            android:visibility="gone"
+            />
+
+    <TextView android:id="@+id/redphone_banner"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content"
+              android:layout_alignTop="@id/incomingCallWidget"
+              android:gravity="center"
+              android:paddingTop="8dp"
+              android:paddingBottom="8dp"
+              android:textAppearance="?android:attr/textAppearanceLarge"
+              android:textColor="#FFFFFF"
+              android:textAllCaps="true"
+              android:background="@color/textsecure_primary"
+              android:text="@string/redphone_call_controls__signal_call"/>
+
+</RelativeLayout>

res/values/strings.xml

@@ -641,6 +641,14 @@
     <string name="SingleRecipientNotificationBuilder_signal">Signal</string>
     <string name="SingleRecipientNotificationBuilder_new_message">New message</string>
 
+    <!-- WebRtcCallScreen -->
+    <string name="WebRtcCallScreen_new_safety_numbers">The safety numbers for your conversation with %1$s have changed. This could either mean that someone is trying to intercept your communication, or that %2$s simply re-installed Signal.</string>
+    <string name="WebRtcCallScreen_you_may_wish_to_verify_this_contact">You may wish to verify
+        safety numbers for this contact.
+    </string>
+    <string name="WebRtcCallScreen_new_safety_numbers_title">New safety numbers</string>
+
+
     <!-- attachment_type_selector -->
     <string name="attachment_type_selector__image">Image</string>
     <string name="attachment_type_selector__image_description">Image</string>
@@ -1129,6 +1137,9 @@
     <string name="preferences_chats__message_trimming">Message trimming</string>
     <string name="preferences_advanced__use_system_emoji">Use system emoji</string>
     <string name="preferences_advanced__disable_signal_built_in_emoji_support">Disable Signal\'s built-in emoji support</string>
+    <string name="preferences_advanced__video_calling_beta">Video calling beta</string>
+    <string name="preferences_advanced__enable_support_for_next_generation_video_and_voice_calls">Support for next-generation video and voice calls when enabled by both parties. This feature is in beta.</string>
+
 
     <!-- **************************************** -->
     <!-- menus -->

res/values/styles.xml

@@ -227,6 +227,13 @@
         <item name="android:textOff">@null</item>
     </style>
 
+    <style name="WebRtcCallCompoundButton">
+        <item name="android:layout_height">31dp</item>
+        <item name="android:layout_width">31dp</item>
+        <item name="android:textOn">@null</item>
+        <item name="android:textOff">@null</item>
+    </style>
+
     <style name="IdentityKey">
         <item name="android:fontFamily">monospace</item>
         <item name="android:typeface">monospace</item>

res/xml/preferences_advanced.xml

@@ -19,6 +19,12 @@
                         android:title="@string/preferences_advanced__use_system_emoji"
                         android:summary="@string/preferences_advanced__disable_signal_built_in_emoji_support" />
 
+    <org.thoughtcrime.securesms.components.SwitchPreferenceCompat
+            android:defaultValue="false"
+            android:key="pref_webrtc_calling"
+            android:title="@string/preferences_advanced__video_calling_beta"
+            android:summary="@string/preferences_advanced__enable_support_for_next_generation_video_and_voice_calls"/>
+
     <Preference android:key="pref_choose_identity"
                 android:title="@string/preferences__choose_identity"
                 android:summary="@string/preferences__choose_your_contact_entry_from_the_contacts_list"/>