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function [t, TS] = plotReceiveTrace(filename, flat)
fid=fopen(filename);
%DEBUG ; ( 8:32:33:375 | 0) VIDEO:1 ; 5260; First packet of frame 1869537938
%DEBUG ; ( 8:32:33:375 | 0) VIDEO CODING:1 ; 5260; Decoding timestamp 1869534934
%DEBUG ; ( 8:32:33:375 | 0) VIDEO:1 ; 5260; Render frame 1869534934 at 20772610
%DEBUG ; ( 8:32:33:375 | 0) VIDEO CODING:-1 ; 5260; Frame decoded: timeStamp=1870511259 decTime=0 maxDecTime=0, at 19965
%DEBUG ; ( 7:59:42:500 | 0) VIDEO:-1 ; 2500; Received complete frame timestamp 1870514263 frame type 1 frame size 7862 at time 19965, jitter estimate was 130
%DEBUG ; ( 8: 5:51:774 | 0) VIDEO:-1 ; 3968; ExtrapolateLocalTime(1870967878)=24971 ms
if nargin == 1
flat = 0;
end
line = fgetl(fid);
estimatedArrivalTime = [];
packetTime = [];
firstPacketTime = [];
decodeTime = [];
decodeCompleteTime = [];
renderTime = [];
completeTime = [];
while ischar(line)%line ~= -1
if length(line) == 0
line = fgetl(fid);
continue;
end
% Parse the trace line header
[tempres, count] = sscanf(line, 'DEBUG ; (%u:%u:%u:%u |%*lu)%13c:');
if count < 5
line = fgetl(fid);
continue;
end
hr=tempres(1);
mn=tempres(2);
sec=tempres(3);
ms=tempres(4);
timeInMs=hr*60*60*1000 + mn*60*1000 + sec*1000 + ms;
label = tempres(5:end);
I = find(label ~= 32);
label = label(I(1):end); % remove white spaces
if ~strncmp(char(label), 'VIDEO', 5) & ~strncmp(char(label), 'VIDEO CODING', 12)
line = fgetl(fid);
continue;
end
message = line(72:end);
% Parse message
[p, count] = sscanf(message, 'ExtrapolateLocalTime(%lu)=%lu ms');
if count == 2
estimatedArrivalTime = [estimatedArrivalTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'Packet seqNo %u of frame %lu at %lu');
if count == 3
packetTime = [packetTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'First packet of frame %lu at %lu');
if count == 2
firstPacketTime = [firstPacketTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'Decoding timestamp %lu at %lu');
if count == 2
decodeTime = [decodeTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'Render frame %lu at %lu. Render delay %lu, required delay %lu, max decode time %lu, min total delay %lu');
if count == 6
renderTime = [renderTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'Frame decoded: timeStamp=%lu decTime=%d maxDecTime=%lu, at %lu');
if count == 4
decodeCompleteTime = [decodeCompleteTime; p'];
line = fgetl(fid);
continue;
end
[p, count] = sscanf(message, 'Received complete frame timestamp %lu frame type %u frame size %*u at time %lu, jitter estimate was %lu');
if count == 4
completeTime = [completeTime; p'];
line = fgetl(fid);
continue;
end
line = fgetl(fid);
end
fclose(fid);
t = completeTime(:,3);
TS = completeTime(:,1);
figure;
subplot(211);
hold on;
slope = 0;
if sum(size(packetTime)) > 0
% Plot the time when each packet arrives
firstTimeStamp = packetTime(1,2);
x = (packetTime(:,2) - firstTimeStamp)/90;
if flat
slope = x;
end
firstTime = packetTime(1,3);
plot(x, packetTime(:,3) - firstTime - slope, 'b.');
else
% Plot the time when the first packet of a frame arrives
firstTimeStamp = firstPacketTime(1,1);
x = (firstPacketTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
firstTime = firstPacketTime(1,2);
plot(x, firstPacketTime(:,2) - firstTime - slope, 'b.');
end
% Plot the frame complete time
if prod(size(completeTime)) > 0
x = (completeTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, completeTime(:,3) - firstTime - slope, 'ks');
end
% Plot the time the decode starts
if prod(size(decodeTime)) > 0
x = (decodeTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, decodeTime(:,2) - firstTime - slope, 'r.');
end
% Plot the decode complete time
if prod(size(decodeCompleteTime)) > 0
x = (decodeCompleteTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, decodeCompleteTime(:,4) - firstTime - slope, 'g.');
end
if prod(size(renderTime)) > 0
% Plot the wanted render time in ms
x = (renderTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, renderTime(:,2) - firstTime - slope, 'c-');
% Plot the render time if there were no render delay or decoding delay.
x = (renderTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, renderTime(:,2) - firstTime - slope - renderTime(:, 3) - renderTime(:, 5), 'c--');
% Plot the render time if there were no render delay.
x = (renderTime(:,1) - firstTimeStamp)/90;
if flat
slope = x;
end
plot(x, renderTime(:,2) - firstTime - slope - renderTime(:, 3) - renderTime(:, 5), 'b-');
end
%plot(x, 90*x, 'r-');
xlabel('RTP timestamp (in ms)');
ylabel('Time (ms)');
legend('Packet arrives', 'Frame complete', 'Decode', 'Decode complete', 'Time to render', 'Only jitter', 'Must decode');
% subplot(312);
% hold on;
% completeTs = completeTime(:, 1);
% arrivalTs = estimatedArrivalTime(:, 1);
% [c, completeIdx, arrivalIdx] = intersect(completeTs, arrivalTs);
% %plot(completeTs(completeIdx), completeTime(completeIdx, 3) - estimatedArrivalTime(arrivalIdx, 2));
% timeUntilComplete = completeTime(completeIdx, 3) - estimatedArrivalTime(arrivalIdx, 2);
% devFromAvgCompleteTime = timeUntilComplete - mean(timeUntilComplete);
% plot(completeTs(completeIdx) - completeTs(completeIdx(1)), devFromAvgCompleteTime);
% plot(completeTime(:, 1) - completeTime(1, 1), completeTime(:, 4), 'r');
% plot(decodeCompleteTime(:, 1) - decodeCompleteTime(1, 1), decodeCompleteTime(:, 2), 'g');
% plot(decodeCompleteTime(:, 1) - decodeCompleteTime(1, 1), decodeCompleteTime(:, 3), 'k');
% xlabel('RTP timestamp');
% ylabel('Time (ms)');
% legend('Complete time - Estimated arrival time', 'Desired jitter buffer level', 'Actual decode time', 'Max decode time', 0);
if prod(size(renderTime)) > 0
subplot(212);
hold on;
firstTime = renderTime(1, 1);
targetDelay = max(renderTime(:, 3) + renderTime(:, 4) + renderTime(:, 5), renderTime(:, 6));
plot(renderTime(:, 1) - firstTime, renderTime(:, 3), 'r-');
plot(renderTime(:, 1) - firstTime, renderTime(:, 4), 'b-');
plot(renderTime(:, 1) - firstTime, renderTime(:, 5), 'g-');
plot(renderTime(:, 1) - firstTime, renderTime(:, 6), 'k-');
plot(renderTime(:, 1) - firstTime, targetDelay, 'c-');
xlabel('RTP timestamp');
ylabel('Time (ms)');
legend('Render delay', 'Jitter delay', 'Decode delay', 'Extra delay', 'Min total delay');
end
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