diff options
Diffstat (limited to 'src/plugins/windowsaudio/qwindowsaudioutils.cpp')
| -rw-r--r-- | src/plugins/windowsaudio/qwindowsaudioutils.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/plugins/windowsaudio/qwindowsaudioutils.cpp b/src/plugins/windowsaudio/qwindowsaudioutils.cpp new file mode 100644 index 000000000..36a8d750f --- /dev/null +++ b/src/plugins/windowsaudio/qwindowsaudioutils.cpp @@ -0,0 +1,111 @@ +/**************************************************************************** +** +** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qwindowsaudioutils.h" + +#ifndef SPEAKER_FRONT_LEFT + #define SPEAKER_FRONT_LEFT 0x00000001 + #define SPEAKER_FRONT_RIGHT 0x00000002 + #define SPEAKER_FRONT_CENTER 0x00000004 + #define SPEAKER_LOW_FREQUENCY 0x00000008 + #define SPEAKER_BACK_LEFT 0x00000010 + #define SPEAKER_BACK_RIGHT 0x00000020 + #define SPEAKER_FRONT_LEFT_OF_CENTER 0x00000040 + #define SPEAKER_FRONT_RIGHT_OF_CENTER 0x00000080 + #define SPEAKER_BACK_CENTER 0x00000100 + #define SPEAKER_SIDE_LEFT 0x00000200 + #define SPEAKER_SIDE_RIGHT 0x00000400 + #define SPEAKER_TOP_CENTER 0x00000800 + #define SPEAKER_TOP_FRONT_LEFT 0x00001000 + #define SPEAKER_TOP_FRONT_CENTER 0x00002000 + #define SPEAKER_TOP_FRONT_RIGHT 0x00004000 + #define SPEAKER_TOP_BACK_LEFT 0x00008000 + #define SPEAKER_TOP_BACK_CENTER 0x00010000 + #define SPEAKER_TOP_BACK_RIGHT 0x00020000 + #define SPEAKER_RESERVED 0x7FFC0000 + #define SPEAKER_ALL 0x80000000 +#endif + +#ifndef WAVE_FORMAT_EXTENSIBLE + #define WAVE_FORMAT_EXTENSIBLE 0xFFFE +#endif + +#ifndef WAVE_FORMAT_IEEE_FLOAT + #define WAVE_FORMAT_IEEE_FLOAT 0x0003 +#endif + +static const GUID _KSDATAFORMAT_SUBTYPE_PCM = { + 0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}; + +static const GUID _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = { + 0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}}; + +QT_BEGIN_NAMESPACE + +bool qt_convertFormat(const QAudioFormat &format, WAVEFORMATEXTENSIBLE *wfx) +{ + if (!wfx + || !format.isValid() + || format.codec() != QStringLiteral("audio/pcm") + || format.sampleRate() <= 0 + || format.channelCount() <= 0 + || format.sampleSize() <= 0 + || format.byteOrder() != QAudioFormat::LittleEndian) { + return false; + } + + wfx->Format.nSamplesPerSec = format.sampleRate(); + wfx->Format.wBitsPerSample = wfx->Samples.wValidBitsPerSample = format.sampleSize(); + wfx->Format.nChannels = format.channelCount(); + wfx->Format.nBlockAlign = (wfx->Format.wBitsPerSample / 8) * wfx->Format.nChannels; + wfx->Format.nAvgBytesPerSec = wfx->Format.nBlockAlign * wfx->Format.nSamplesPerSec; + wfx->Format.cbSize = 0; + + if (format.sampleType() == QAudioFormat::Float) { + wfx->Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT; + wfx->SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; + } else { + wfx->Format.wFormatTag = WAVE_FORMAT_PCM; + wfx->SubFormat = _KSDATAFORMAT_SUBTYPE_PCM; + } + + if (format.channelCount() > 2) { + wfx->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; + wfx->Format.cbSize = 22; + wfx->dwChannelMask = 0xFFFFFFFF >> (32 - format.channelCount()); + } + + return true; +} + +QT_END_NAMESPACE |