8:00 – 1:00 SR

• Backups
• There was a demo today! Was invited in towards the end to talk about data security and roles.
• Had a good idea about how to run the PA/RA code on one of our (Dreamhost? Steadfast?) servers and let the labs input their data directly. We could then ingest the data nightly. Need to research this a bit.

1:00 – 4:00 FP

• Finished rolling up the SampleSounds(s) into BasicAudio.
• Starting on 3D audio, using How to: Integrate X3DAudio with XAudio2
  • Adding the 3D calls to the main() in ConsoleSound2, just after the BasicAudio class has been initialized.
  • Had to add x3daudio.lib to the project and <x3daudio.h> to the #includes.
  • This looks to be the meat of the calculation. It looks like X3DCalculate() works on the relative position of an Emitter and the Listener and uses that to populate a DSP. Once that’s done, then the Audio2 source is manipulated appropriately.

  •         X3DAudioCalculate( g_audioState.x3DInstance, &g_audioState.listener, &g_audioState.emitter, dwCalcFlags,
                               &g_audioState.dspSettings );
    
            IXAudio2SourceVoice* voice = g_audioState.pSourceVoice;
            if( voice )
            {
                // Apply X3DAudio generated DSP settings to XAudio2
                voice->SetFrequencyRatio( g_audioState.dspSettings.DopplerFactor );
                voice->SetOutputMatrix( g_audioState.pMasteringVoice, INPUTCHANNELS, g_audioState.nChannels,
                                        g_audioState.matrixCoefficients );
    
                voice->SetOutputMatrix(g_audioState.pSubmixVoice, 1, 1, &g_audioState.dspSettings.ReverbLevel);
    
                XAUDIO2_FILTER_PARAMETERS FilterParametersDirect = { LowPassFilter, 2.0f * sinf(X3DAUDIO_PI/6.0f * g_audioState.dspSettings.LPFDirectCoefficient), 1.0f }; // see XAudio2CutoffFrequencyToRadians() in XAudio2.h for more information on the formula used here
                voice->SetOutputFilterParameters(g_audioState.pMasteringVoice, &FilterParametersDirect);
                XAUDIO2_FILTER_PARAMETERS FilterParametersReverb = { LowPassFilter, 2.0f * sinf(X3DAUDIO_PI/6.0f * g_audioState.dspSettings.LPFReverbCoefficient), 1.0f }; // see XAudio2CutoffFrequencyToRadians() in XAudio2.h for more information on the formula used here
                voice->SetOutputFilterParameters(g_audioState.pSubmixVoice, &FilterParametersReverb);
            }

7:30 – 11:00 SR

• Backups. And to make sure that it’s possible to see the results of the db backup script, I added in a “pause.exe” at the end of the batch file.
• Deployed the new FA and RA
• RA was taking a *long* time to start up. It turns out that the reason was that there were 17,000 alerts that were going into a DataGrid. The temporary fix was to delete the old alerts, but there needs to be a mechanism for determining/limiting what to show.

11:00 – 4:30FP

• Building a copy of XAudio2BasicSound, cleverly calling ConsoleSound2.
• Since it depends on SDKwavefile, I had to pull SAFE_DELETE, SAFE_DELETE_ARRAY, and SAFE_RELEASE from dxut.h. It also requires dxerr.h. but that’s in the regular directx include directory.
• Extremely empty code right now, but it compiles and links. On a side note, the compiler should accept the environment variable $(DXSDK_DIR), but it doesn’t. And adding macros is an enormous pain, as near as I can tell.
• The code is ported over and works. It’s all stuck in a main() right now. I need to clean up and build an Audio class. Actually, looking at the way the code is set up, a WavSampleSound class might be better. It probably could extend from a SampleSound class, but I’ll break that out later…
• Class is mostly done and running!
•  

7:30 – 10:30 SR

• Backups, and it turns out that there was a bug with the project_portfolio_enh db, where a view that referenced tables that no longer exist was trying to be serialized. Dropping the view fixed the problem.
• Deployed the new FA, and changed the db around a bit to accommodate. Which caused all the data to disappear from the client due to a null return of a query. Which caused us to want to restore from the backups. Which brought the backup error to light. Fortunately, it’s a test db, and very little actual work was lost.
• Looked at the server info in Xacta, which was a new, exciting thing. It looks like our current authority to operate expires 3/25/2014. Need to keep an eye on that.
• Meeting with the PIT crew from 7:30-8:00, which I missed due to the fact that I was uploading the new FA in preparation for the *scheduled* 8:00 meeting. Dong caught it though. He showed/described FA and RA to the team and they are actually quite happy.

10:30 – 3:30 FP.

• More Audio3d.
• Starting to add in the 3dAudio based on this and this and this.
• Got an audio link error and chased that down, discovering a few things along the way.
• There is directX help for C++ in (“C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Documentation\DirectX9\directx_sdk.chm”). I don’t know it it’s any good, but I’m going to look though it next. Note that this is DX9, not 11. I’m *hoping* that this is all up to date…
• Pointed Configuration Properties->Linker->General->Additional Library Directories at (C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Lib\x86), and added the following files to Configuration Properties->Linker->Input->additional dependencies”
  • d3d11.lib
    d3dx11.lib
    winmm.lib
    xinput.lib
    X3DAudio.lib
  • This is a change from the libraries that the demo book points at, which were dxd9 libs. Recompiled and ran the code with no problems. I did attempt to clean up the xact3dInstance pointer in ~Audio3d(), but delete[] threw an exception
• Reading through the DX documentation, which, though it is in the DX9 folder, contains information about DX11. Whatever.
• The documentation is kind of what you’d expect, but it let me find the tutorials and demos, which are quite nice. On my machine, the demos that I’m interested in are located here: (C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Samples\C++\XAudio2). It contains 4 projects:
  • XAudio2BasicSound
  • XAudioBasicStream
  • XAudio2CustomAPO
  • XAudio2Sound3D
• Each project has source and MSVC2008 and MSVC2010 project files. I’ve just opened up the XAudio2Sound3D MSVC2010 project, and it compiled and ran just fine: 
• This is almost exactly what I intend to build for the test environment, so that’s pretty cool. And using the buttons or the keyboard, I can drive the sound emitter around my head. Woohoo!
• Next goal is to build up a copy of XAudio2BasicSound and then add the 3D components (without the graphics) from XAudio2Sound3D.

8:00 – 1:00 SR

• Backups
• Deployed the new FA and RA for the first time. Had to make some changes to the DB to support. FA runs just fine, but there is a query problem in RA. Current bugs are:
  • When Update is clicked and not all fields are filledin, we might what to pop up a dialog box saying that they are not all filled in but allowing for a save.
  • Add tooltips to buttons. In particular, we need to be clear about what saves and what cnacels without saving.
  • Add a “Select All” to the SQL error dialog, now that we have QUERIES FROM HELL.
  • RA error string: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorExceptio: Unknown column ‘c.appropriation’ in ‘where clause’.
• Cleaned up the blog a bit to accommodate FA and RA.
• Had an interesting talk with Dimitri about his Master’s program. Thought for the day. What if access to a system was based on an Eliza-like conversation with the computer. There would be an initial “get acquainted” session, and then the “login” conversation would be shorter.
  • Store key patterns as well as the words.
  • Use a plagerism test to look for cut-and-paste replies from recorded sessions
  • Login discussions could be like Capchas in that they could be half test, half learning.

2:00 – 4:00 FP

• I thought this tutorial would be the best way to get positional information, but it appears to be stale. The New Way seems to be this.
• Close, but it’s actually part of the Windows API now?
  • Programming Guide
  • Programming Reference
• Nope that’s C#. Still looking. Since I have xact3.h working, trying to stay in this space…
  • 3D XACT using C++
  • Which references How To: Integrate X3DAudio with XACT
  • Still looking for what headers to include. Got it. It’s <xact3d3.h>. Don’t confuse this with <xact3.h>
• Ok, for tomorrow, I start writing a 3D version of Audio.h and then try calling that from the ConsoleSoundApp.