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Add SDP backwards compatibility

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This commit is contained in:
Cameron Gutman 2015-01-25 18:12:25 -05:00
parent aee255a6ee
commit 466463ebc3
1 changed files with 69 additions and 9 deletions
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78
moonlight-common/src/com/limelight/nvstream/rtsp/SdpGenerator.java
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@ -1,6 +1,8 @@
package com.limelight.nvstream.rtsp;
import java.net.Inet6Address;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import com.limelight.nvstream.ConnectionContext;
@ -9,6 +11,53 @@ public class SdpGenerator {
config.append("a="+attribute+":"+value+" \r\n");
}
private static void addSessionAttributeBytes(StringBuilder config, String attribute, byte[] value) {
char str[] = new char[value.length];
for (int i = 0; i < value.length; i++) {
str[i] = (char)value[i];
}
addSessionAttribute(config, attribute, new String(str));
}
private static void addSessionAttributeInt(StringBuilder config, String attribute, int value) {
ByteBuffer b = ByteBuffer.allocate(4).order(ByteOrder.BIG_ENDIAN);
b.putInt(value);
addSessionAttributeBytes(config, attribute, b.array());
}
private static void addGen3Attributes(StringBuilder config, ConnectionContext context) {
addSessionAttribute(config, "x-nv-general.serverAddress", context.serverAddress.getHostAddress());
addSessionAttributeInt(config, "x-nv-general.featureFlags", 0x42774141);
addSessionAttributeInt(config, "x-nv-video[0].transferProtocol", 0x41514141);
addSessionAttributeInt(config, "x-nv-video[1].transferProtocol", 0x41514141);
addSessionAttributeInt(config, "x-nv-video[2].transferProtocol", 0x41514141);
addSessionAttributeInt(config, "x-nv-video[3].transferProtocol", 0x41514141);
addSessionAttributeInt(config, "x-nv-video[0].rateControlMode", 0x42414141);
addSessionAttributeInt(config, "x-nv-video[1].rateControlMode", 0x42514141);
addSessionAttributeInt(config, "x-nv-video[2].rateControlMode", 0x42514141);
addSessionAttributeInt(config, "x-nv-video[3].rateControlMode", 0x42514141);
addSessionAttribute(config, "x-nv-vqos[0].bw.flags", "14083");
addSessionAttribute(config, "x-nv-vqos[0].videoQosMaxConsecutiveDrops", "0");
addSessionAttribute(config, "x-nv-vqos[1].videoQosMaxConsecutiveDrops", "0");
addSessionAttribute(config, "x-nv-vqos[2].videoQosMaxConsecutiveDrops", "0");
addSessionAttribute(config, "x-nv-vqos[3].videoQosMaxConsecutiveDrops", "0");
}
private static void addGen4Attributes(StringBuilder config, ConnectionContext context) {
addSessionAttribute(config, "x-nv-general.serverAddress", "rtsp://"+context.serverAddress.getHostAddress()+":48010");
addSessionAttribute(config, "x-nv-video[0].rateControlMode", "4");
addSessionAttribute(config, "x-nv-vqos[0].bw.flags", "51");
}
public static String generateSdpFromContext(ConnectionContext context) {
StringBuilder config = new StringBuilder();
config.append("v=0").append("\r\n"); // SDP Version 0
@ -22,16 +71,12 @@ public class SdpGenerator {
config.append(context.serverAddress.getHostAddress());
config.append("\r\n");
config.append("s=NVIDIA Streaming Client").append("\r\n");
addSessionAttribute(config, "x-nv-general.serverAddress", "rtsp://"+context.serverAddress.getHostAddress()+":48010");
addSessionAttribute(config, "x-nv-video[0].clientViewportWd", ""+context.streamConfig.getWidth());
addSessionAttribute(config, "x-nv-video[0].clientViewportHt", ""+context.streamConfig.getHeight());
addSessionAttribute(config, "x-nv-video[0].maxFPS", ""+context.streamConfig.getRefreshRate());
addSessionAttribute(config, "x-nv-video[0].packetSize", ""+context.streamConfig.getMaxPacketSize());
addSessionAttribute(config, "x-nv-video[0].rateControlMode", "4");
if (context.streamConfig.getRemote()) {
addSessionAttribute(config, "x-nv-video[0].averageBitrate", "4");
@ -44,9 +89,7 @@ public class SdpGenerator {
addSessionAttribute(config, "x-nv-video[0].timeoutLengthMs", "7000");
addSessionAttribute(config, "x-nv-video[0].framesWithInvalidRefThreshold", "0");
addSessionAttribute(config, "x-nv-vqos[0].bw.flags", "51");
// Lock the bitrate if we're not scaling resolution so the picture doesn't get too bad
if (context.streamConfig.getHeight() >= 1080 && context.streamConfig.getRefreshRate() >= 60) {
if (context.streamConfig.getBitrate() < 10000) {
@ -96,10 +139,27 @@ public class SdpGenerator {
else {
addSessionAttribute(config, "x-nv-aqos.qosTrafficType", "4");
}
// Add generation-specific attributes
switch (context.serverGeneration) {
case ConnectionContext.SERVER_GENERATION_3:
addGen3Attributes(config, context);
break;
case ConnectionContext.SERVER_GENERATION_4:
default:
addGen4Attributes(config, context);
break;
}
config.append("t=0 0").append("\r\n");
config.append("m=video 47998 ").append("\r\n");
if (context.serverGeneration == ConnectionContext.SERVER_GENERATION_3) {
config.append("m=video 47996 ").append("\r\n");
}
else {
config.append("m=video 47998 ").append("\r\n");
}
return config.toString();
}