1function plotTimingTest(filename)
2fid=fopen(filename);
3
4%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; Stochastic test 1
5%DEBUG     ; ( 9:53:33:859 |    0) VIDEO CODING:-1         ;      7132; Frame decoded: timeStamp=3000 decTime=10 at 10012
6%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; timeStamp=3000 clock=10037 maxWaitTime=0
7%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; timeStampMs=33 renderTime=54
8line = fgetl(fid);
9decTime = [];
10waitTime = [];
11renderTime = [];
12foundStart = 0;
13testName = 'Stochastic test 1';
14while ischar(line)
15    if length(line) == 0
16        line = fgetl(fid);
17        continue;
18    end
19    lineOrig = line;
20    line = line(72:end);
21    if ~foundStart
22        if strncmp(line, testName, length(testName)) 
23            foundStart = 1;
24        end
25        line = fgetl(fid);
26        continue;
27    end
28    [p, count] = sscanf(line, 'Frame decoded: timeStamp=%lu decTime=%d maxDecTime=%d, at %lu');
29    if count == 4
30        decTime = [decTime; p'];
31        line = fgetl(fid);
32        continue;
33    end
34    [p, count] = sscanf(line, 'timeStamp=%u clock=%u maxWaitTime=%u');
35    if count == 3
36        waitTime = [waitTime; p'];
37        line = fgetl(fid);
38        continue;
39    end
40    [p, count] = sscanf(line, 'timeStamp=%u renderTime=%u');
41    if count == 2
42        renderTime = [renderTime; p'];
43        line = fgetl(fid);
44        continue;
45    end    
46    line = fgetl(fid);
47end
48fclose(fid);
49
50% Compensate for wrap arounds and start counting from zero.
51timeStamps = waitTime(:, 1);
52tsDiff = diff(timeStamps);
53wrapIdx = find(tsDiff < 0);
54timeStamps(wrapIdx+1:end) = hex2dec('ffffffff') + timeStamps(wrapIdx+1:end);
55timeStamps = timeStamps - timeStamps(1);
56
57figure;
58hold on;
59plot(timeStamps, decTime(:, 2), 'r');
60plot(timeStamps, waitTime(:, 3), 'g');
61plot(timeStamps(2:end), diff(renderTime(:, 2)), 'b');
62legend('Decode time', 'Max wait time', 'Render time diff');