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Added volume control for QAudioOutput & QAudioInput (alsa)

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QTBUG-25454

- Added update to docs on volume control.
- Added internal volume adjustment for alsa implementation.
- Enabled float sample option in QAudioDeviceInfo (alsa).

Change-Id: I6b89fc8beb457d71be9ad71b538c86a008570f07
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
Reviewed-by: Kurt Korbatits  <kurt.korbatits@nokia.com>
This commit is contained in:
Kurt Korbatits
2012-07-06 09:56:38 +10:00
committed by Qt by Nokia
parent 8c12864361
commit 1ac9318645
10 changed files with 252 additions and 10 deletions
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4
src/multimedia/audio/qaudioinput.cpp
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@@ -279,7 +279,7 @@ int QAudioInput::bufferSize() const
/*!
Returns the amount of audio data available to read in bytes.
NOTE: returned value is only valid while in QAudio::ActiveState or QAudio::IdleState
Note: returned value is only valid while in QAudio::ActiveState or QAudio::IdleState
state, otherwise returns zero.
*/
@@ -332,6 +332,8 @@ int QAudioInput::notifyInterval() const
If the device does not support adjusting the input
volume then \a volume will be ignored and the input
volume will remain at 1.0.
Note: Adjustments to the volume will change the volume of this audio stream, not the global volume.
*/
void QAudioInput::setVolume(qreal volume)
{