110 lines
4 KiB
Java
110 lines
4 KiB
Java
package eu.siacs.conversations.xmpp.jingle;
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import com.google.common.base.Strings;
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import com.google.common.collect.Collections2;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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import eu.siacs.conversations.entities.Contact;
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import eu.siacs.conversations.entities.Presence;
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import eu.siacs.conversations.entities.Presences;
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import eu.siacs.conversations.entities.ServiceDiscoveryResult;
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import eu.siacs.conversations.xml.Namespace;
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public class RtpCapability {
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private static final List<String> BASIC_RTP_REQUIREMENTS = Arrays.asList(
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Namespace.JINGLE,
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Namespace.JINGLE_TRANSPORT_ICE_UDP,
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Namespace.JINGLE_APPS_RTP,
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Namespace.JINGLE_APPS_DTLS
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);
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private static final List<String> VIDEO_REQUIREMENTS = Arrays.asList(
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Namespace.JINGLE_FEATURE_AUDIO,
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Namespace.JINGLE_FEATURE_VIDEO
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);
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public static Capability check(final Presence presence) {
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final ServiceDiscoveryResult disco = presence.getServiceDiscoveryResult();
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final List<String> features = disco == null ? Collections.emptyList() : disco.getFeatures();
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if (features.containsAll(BASIC_RTP_REQUIREMENTS)) {
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if (features.containsAll(VIDEO_REQUIREMENTS)) {
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return Capability.VIDEO;
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}
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if (features.contains(Namespace.JINGLE_FEATURE_AUDIO)) {
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return Capability.AUDIO;
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}
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}
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return Capability.NONE;
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}
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public static String[] filterPresences(final Contact contact, Capability required) {
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final Presences presences = contact.getPresences();
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final ArrayList<String> resources = new ArrayList<>();
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for (final Map.Entry<String, Presence> presence : presences.getPresencesMap().entrySet()) {
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final Capability capability = check(presence.getValue());
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if (capability == Capability.NONE) {
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continue;
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}
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if (required == Capability.AUDIO || capability == required) {
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resources.add(presence.getKey());
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}
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}
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return resources.toArray(new String[0]);
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}
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public static Capability check(final Contact contact) {
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return check(contact, true);
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}
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public static Capability check(final Contact contact, final boolean allowFallback) {
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final Presences presences = contact.getPresences();
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if (presences.size() == 0 && allowFallback && contact.getAccount().isEnabled()) {
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return contact.getRtpCapability();
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}
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Capability result = Capability.NONE;
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for (final Presence presence : presences.getPresences()) {
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Capability capability = check(presence);
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if (capability == Capability.VIDEO) {
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result = capability;
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} else if (capability == Capability.AUDIO && result == Capability.NONE) {
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result = capability;
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}
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}
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return result;
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}
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// do all devices that support Rtp Call also support JMI?
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public static boolean jmiSupport(final Contact contact) {
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return !Collections2.transform(
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Collections2.filter(
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contact.getPresences().getPresences(),
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p -> RtpCapability.check(p) != RtpCapability.Capability.NONE),
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p -> {
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ServiceDiscoveryResult disco = p.getServiceDiscoveryResult();
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return disco != null && disco.getFeatures().contains(Namespace.JINGLE_MESSAGE);
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}).contains(false);
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}
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public enum Capability {
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NONE, AUDIO, VIDEO;
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public static Capability of(String value) {
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if (Strings.isNullOrEmpty(value)) {
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return NONE;
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}
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try {
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return valueOf(value);
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} catch (IllegalArgumentException e) {
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return NONE;
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}
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}
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}
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}
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