Examples with SDPCodec im.actor.runtime.webrtc.sdp.entities.SDPCodec used on opensource projects

Example 1 with SDPCodec

use of im.actor.runtime.webrtc.sdp.entities.SDPCodec in project actor-platform by actorapp.

the class SDPOptimizer method optimize.

public static WebRTCSessionDescription optimize(WebRTCSessionDescription src) {
    SDPScheme sdpScheme = SDP.parse(src.getSdp());
    // Prefer ISAC over other audio codecs
    for (SDPMedia media : sdpScheme.getMediaLevel()) {
        SDPCodec isacCodec = null;
        for (SDPCodec codec : media.getCodecs()) {
            if (codec.getName().toLowerCase().equals("isac")) {
                isacCodec = codec;
                break;
            }
        }
        if (isacCodec != null) {
            media.getCodecs().remove(isacCodec);
            media.getCodecs().add(0, isacCodec);
        }
    }
    return new WebRTCSessionDescription(src.getType(), sdpScheme.toSDP());
}

Example 2 with SDPCodec

use of im.actor.runtime.webrtc.sdp.entities.SDPCodec in project actor-platform by actorapp.

the class SDP method parse.

public static SDPScheme parse(String sdp) {
    SDPReader reader = new SDPReader(sdp);
    SDPRawRecord record;
    //
    // Session
    //
    int version = reader.readVersion();
    String originator = reader.readRecord('o').getValue();
    String sessionName = reader.readRecord('s').getValue();
    SDPSession session = new SDPSession(version, originator, sessionName);
    while ((record = reader.readUntil('m')) != null) {
        session.getRecords().add(record);
    }
    //
    // Media Lines
    //
    ArrayList<SDPMedia> medias = new ArrayList<>();
    SDPRawRecord mediaLine;
    while ((mediaLine = reader.readOptionalRecord('m')) != null) {
        String[] mediaDesc = mediaLine.getValue().split(" ");
        String mediaType = mediaDesc[0];
        int port = Integer.parseInt(mediaDesc[1]);
        String protocol = mediaDesc[2];
        ArrayList<Integer> codecIds = new ArrayList<>();
        for (int i = 3; i < mediaDesc.length; i++) {
            codecIds.add(Integer.parseInt(mediaDesc[i]));
        }
        SDPMediaMode mode = SDPMediaMode.SEND_RECEIVE;
        ArrayList<SDPRawRecord> records = new ArrayList<>();
        // ArrayList<SDPCodec> codecs = new ArrayList<>();
        HashMap<Integer, SDPCodec> codecs = new HashMap<>();
        HashMap<Integer, HashMap<String, String>> args = new HashMap<>();
        HashMap<Integer, ArrayList<String>> codecFeedbackMessages = new HashMap<>();
        while ((record = reader.readUntil('m')) != null) {
            if (record.getType() == 'a' && "sendrecv".equals(record.getValue())) {
                mode = SDPMediaMode.SEND_RECEIVE;
            } else if (record.getType() == 'a' && "inactive".equals(record.getValue())) {
                mode = SDPMediaMode.INACTIVE;
            } else if (record.getType() == 'a' && "recvonly".equals(record.getValue())) {
                mode = SDPMediaMode.RECEIVE_ONLY;
            } else if (record.getType() == 'a' && "sendonly".equals(record.getValue())) {
                mode = SDPMediaMode.SEND_ONLY;
            } else if (record.getType() == 'a' && record.getValue().startsWith("rtpmap:")) {
                String[] codecMap = record.getValue().split(" ", 2);
                int index = Integer.parseInt(codecMap[0].substring("rtpmap:".length()));
                String[] codecDef = codecMap[1].split("/");
                String codecName = codecDef[0];
                int clockRate = Integer.parseInt(codecDef[1]);
                String codecArgs = codecDef.length >= 3 ? codecDef[2] : null;
                codecs.put(index, new SDPCodec(index, codecName, clockRate, codecArgs));
            } else if (record.getType() == 'a' && record.getValue().startsWith("fmtp:")) {
                String[] codecMap = record.getValue().split(" ", 2);
                int index = Integer.parseInt(codecMap[0].substring("fmtp:".length()));
                String params = codecMap[1];
                String[] pLines = params.trim().split(";");
                HashMap<String, String> p = new HashMap<>();
                for (String s : pLines) {
                    s = s.trim();
                    String[] v2 = s.split("=", 2);
                    p.put(v2[0], v2[1]);
                }
                args.put(index, p);
            } else if (record.getType() == 'a' && record.getValue().startsWith("rtcp-fb:")) {
                String[] codecMap = record.getValue().split(" ", 2);
                int index = Integer.parseInt(codecMap[0].substring("rtcp-fb:".length()));
                if (!codecFeedbackMessages.containsKey(index)) {
                    codecFeedbackMessages.put(index, new ArrayList<String>());
                }
                codecFeedbackMessages.get(index).add(codecMap[1]);
            } else {
                records.add(record);
            }
        }
        ArrayList<SDPCodec> codec = new ArrayList<>();
        for (int index : codecIds) {
            SDPCodec sdpCodec = codecs.get(index);
            sdpCodec.setFormat(args.get(index));
            sdpCodec.setCodecFeedback(codecFeedbackMessages.get(index));
            codec.add(sdpCodec);
        }
        medias.add(new SDPMedia(mediaType, port, protocol, codec, mode, records));
    }
    return new SDPScheme(session, medias);
}