| 62 | } |
| 63 | |
| 64 | XnStatus play(Context& /*context*/, AudioGenerator* aGens, XnUInt32 nNodes) |
| 65 | { |
| 66 | XnStatus nRetVal = XN_STATUS_OK; |
| 67 | |
| 68 | #if XN_PLATFORM == XN_PLATFORM_WIN32 |
| 69 | HWAVEOUT hWaveOut; |
| 70 | WAVEHDR* pAudioBuffers; |
| 71 | int nAudioNextBuffer; |
| 72 | |
| 73 | if (nNodes > 1) |
| 74 | { |
| 75 | printf("Warning: only supports playing of a single node. Will play node '%s'.\n", aGens[0].GetName()); |
| 76 | } |
| 77 | |
| 78 | XnWaveOutputMode waveMode; |
| 79 | nRetVal = aGens[0].GetWaveOutputMode(waveMode); |
| 80 | CHECK_RC(nRetVal, "Failed getting wave output mode"); |
| 81 | |
| 82 | // init wave out |
| 83 | WAVEFORMATEX wf; |
| 84 | wf.wFormatTag = 0x0001; // PCM |
| 85 | wf.nChannels = waveMode.nChannels; |
| 86 | wf.nSamplesPerSec = waveMode.nSampleRate; |
| 87 | wf.wBitsPerSample = waveMode.nBitsPerSample; |
| 88 | wf.nBlockAlign = wf.wBitsPerSample * wf.nChannels / 8; |
| 89 | wf.nAvgBytesPerSec = wf.nBlockAlign * wf.nSamplesPerSec; |
| 90 | MMRESULT mmRes = waveOutOpen(&hWaveOut, WAVE_MAPPER, &wf, NULL, NULL, CALLBACK_NULL); |
| 91 | if (mmRes != MMSYSERR_NOERROR) |
| 92 | { |
| 93 | printf("Warning: Failed opening wave out device. Audio could not be played!\n"); |
| 94 | return XN_STATUS_ERROR; |
| 95 | } |
| 96 | |
| 97 | // create some wave headers for playing |
| 98 | pAudioBuffers = new WAVEHDR[NUMBER_OF_AUDIO_BUFFERS]; |
| 99 | xnOSMemSet(pAudioBuffers, 0, sizeof(WAVEHDR)*NUMBER_OF_AUDIO_BUFFERS); |
| 100 | |
| 101 | const XnUInt32 nMaxBufferSize = 2 * 1024 * 1024; |
| 102 | for (int i = 0; i < NUMBER_OF_AUDIO_BUFFERS; ++i) |
| 103 | { |
| 104 | pAudioBuffers[i].lpData = new XnChar[nMaxBufferSize]; |
| 105 | pAudioBuffers[i].dwUser = i; |
| 106 | pAudioBuffers[i].dwFlags = WHDR_DONE; // mark this buffer as empty (already played) |
| 107 | } |
| 108 | |
| 109 | nAudioNextBuffer = 0; |
| 110 | |
| 111 | printf ("Press any key to exit...\n"); |
| 112 | |
| 113 | // drop data till now |
| 114 | aGens[0].WaitAndUpdateData(); |
| 115 | |
| 116 | while (!xnOSWasKeyboardHit()) |
| 117 | { |
| 118 | // Read audio chunk |
| 119 | nRetVal = aGens[0].WaitAndUpdateData(); |
| 120 | if (nRetVal != XN_STATUS_OK) |
| 121 | { |
no test coverage detected