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Diffstat (limited to 'examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc')
| -rw-r--r-- | examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc b/examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc index ad87ecc0..11bea3c3 100644 --- a/examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc +++ b/examples/datavisualization/audiolevels/doc/src/audiolevels.qdoc @@ -39,23 +39,23 @@ In the header file for \c AudioLevels class we declare necessary members: - \snippet ../examples/audiolevels/audiolevels.h 0 + \snippet audiolevels/audiolevels.h 0 And initialize the microphone listening in the source: - \snippet ../examples/audiolevels/audiolevels.cpp 0 + \snippet audiolevels/audiolevels.cpp 0 In the header file for \c AudioLevelsIODevice class we store pointers to the data proxy and also the data array we give to the proxy, because we reuse the same array to keep memory reallocations to the minimum: - \snippet ../examples/audiolevels/audiolevelsiodevice.h 0 + \snippet audiolevels/audiolevelsiodevice.h 0 In the source file we define some static constants to define size of the data array and the middle row index, as well as the resolution of the visualization. You may need to adjust these values to get decent performance in low-end devices: - \snippet ../examples/audiolevels/audiolevelsiodevice.cpp 1 + \snippet audiolevels/audiolevelsiodevice.cpp 1 The \c resolution constant indicates the sample rate, for example, value 8 means every eighth byte from audio input is visualized. This is necessary to make the data readable, as it would @@ -63,13 +63,13 @@ In the \c AudioLevelsIODevice class constructor we initialize the data array: - \snippet ../examples/audiolevels/audiolevelsiodevice.cpp 0 + \snippet audiolevels/audiolevelsiodevice.cpp 0 The \c AudioLevelsIODevice::writeData function is called whenever there is new audio data available to be visualized. There we move the old data along the rows and insert new data in the beginning of the rows: - \snippet ../examples/audiolevels/audiolevelsiodevice.cpp 2 + \snippet audiolevels/audiolevelsiodevice.cpp 2 We use a couple of techniques here to improve performance. First, we reuse the existing data array, as this allows us to avoid any extra memory allocations in our |