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-rw-r--r--src/multimedia/audio/qaudiobuffer.h230
1 files changed, 127 insertions, 103 deletions
diff --git a/src/multimedia/audio/qaudiobuffer.h b/src/multimedia/audio/qaudiobuffer.h
index bed387462..822619f31 100644
--- a/src/multimedia/audio/qaudiobuffer.h
+++ b/src/multimedia/audio/qaudiobuffer.h
@@ -1,41 +1,5 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** 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 The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QAUDIOBUFFER_H
#define QAUDIOBUFFER_H
@@ -43,89 +7,149 @@
#include <QtCore/qshareddata.h>
#include <QtMultimedia/qtmultimediaglobal.h>
-#include <QtMultimedia/qmultimedia.h>
-#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qtaudio.h>
#include <QtMultimedia/qaudioformat.h>
QT_BEGIN_NAMESPACE
-class QAbstractAudioBuffer;
-class QAudioBufferPrivate;
-class Q_MULTIMEDIA_EXPORT QAudioBuffer
+namespace QtPrivate {
+template <QAudioFormat::SampleFormat> struct AudioSampleFormatHelper
+{
+};
+
+template <> struct AudioSampleFormatHelper<QAudioFormat::UInt8>
+{
+ using value_type = unsigned char;
+ static constexpr value_type Default = 128;
+};
+
+template <> struct AudioSampleFormatHelper<QAudioFormat::Int16>
+{
+ using value_type = short;
+ static constexpr value_type Default = 0;
+};
+
+template <> struct AudioSampleFormatHelper<QAudioFormat::Int32>
{
+ using value_type = int;
+ static constexpr value_type Default = 0;
+};
+
+template <> struct AudioSampleFormatHelper<QAudioFormat::Float>
+{
+ using value_type = float;
+ static constexpr value_type Default = 0.;
+};
+
+}
+
+template <QAudioFormat::ChannelConfig config, QAudioFormat::SampleFormat format>
+struct QAudioFrame
+{
+private:
+ // popcount in qalgorithms.h is unfortunately not constexpr on MSVC.
+ // Use this here as a fallback
+ static constexpr int constexprPopcount(quint32 i)
+ {
+ i = i - ((i >> 1) & 0x55555555); // add pairs of bits
+ i = (i & 0x33333333) + ((i >> 2) & 0x33333333); // quads
+ i = (i + (i >> 4)) & 0x0F0F0F0F; // groups of 8
+ return (i * 0x01010101) >> 24; // horizontal sum of bytes
+ }
+ static constexpr int nChannels = constexprPopcount(config);
public:
- QAudioBuffer();
- QAudioBuffer(QAbstractAudioBuffer *provider);
- QAudioBuffer(const QAudioBuffer &other);
- QAudioBuffer(const QByteArray &data, const QAudioFormat &format, qint64 startTime = -1);
- QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime = -1); // Initialized to empty
+ using value_type = typename QtPrivate::AudioSampleFormatHelper<format>::value_type;
+ value_type channels[nChannels];
+ static constexpr int positionToIndex(QAudioFormat::AudioChannelPosition pos)
+ {
+ if (!(config & (1u << pos)))
+ return -1;
+
+ uint maskedChannels = config & ((1u << pos) - 1);
+ return qPopulationCount(maskedChannels);
+ }
- QAudioBuffer& operator=(const QAudioBuffer &other);
- ~QAudioBuffer();
+ value_type value(QAudioFormat::AudioChannelPosition pos) const {
+ int idx = positionToIndex(pos);
+ if (idx < 0)
+ return QtPrivate::AudioSampleFormatHelper<format>::Default;
+ return channels[idx];
+ }
+ void setValue(QAudioFormat::AudioChannelPosition pos, value_type val) {
+ int idx = positionToIndex(pos);
+ if (idx < 0)
+ return;
+ channels[idx] = val;
+ }
+ value_type operator[](QAudioFormat::AudioChannelPosition pos) const {
+ return value(pos);
+ }
+ constexpr void clear() {
+ for (int i = 0; i < nChannels; ++i)
+ channels[i] = QtPrivate::AudioSampleFormatHelper<format>::Default;
+ }
+};
+
+template <QAudioFormat::SampleFormat Format>
+using QAudioFrameMono = QAudioFrame<QAudioFormat::ChannelConfigMono, Format>;
+
+template <QAudioFormat::SampleFormat Format>
+using QAudioFrameStereo = QAudioFrame<QAudioFormat::ChannelConfigStereo, Format>;
+
+template <QAudioFormat::SampleFormat Format>
+using QAudioFrame2Dot1 = QAudioFrame<QAudioFormat::ChannelConfig2Dot1, Format>;
- bool isValid() const;
+template <QAudioFormat::SampleFormat Format>
+using QAudioFrameSurround5Dot1 = QAudioFrame<QAudioFormat::ChannelConfigSurround5Dot1, Format>;
- QAudioFormat format() const;
+template <QAudioFormat::SampleFormat Format>
+using QAudioFrameSurround7Dot1 = QAudioFrame<QAudioFormat::ChannelConfigSurround7Dot1, Format>;
- int frameCount() const;
- int sampleCount() const;
- int byteCount() const;
- qint64 duration() const;
- qint64 startTime() const;
+class QAudioBufferPrivate;
+QT_DECLARE_QESDP_SPECIALIZATION_DTOR_WITH_EXPORT(QAudioBufferPrivate, Q_MULTIMEDIA_EXPORT)
- // Data modification
- // void clear();
- // Other ideas
- // operator *=
- // operator += (need to be careful about different formats)
+class Q_MULTIMEDIA_EXPORT QAudioBuffer
+{
+public:
+ QAudioBuffer() noexcept;
+ QAudioBuffer(const QAudioBuffer &other) noexcept;
+ QAudioBuffer(const QByteArray &data, const QAudioFormat &format, qint64 startTime = -1);
+ QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime = -1); // Initialized to empty
+ ~QAudioBuffer();
- // Data access
- const void* constData() const; // Does not detach, preferred
- const void* data() const; // Does not detach
- void *data(); // detaches
+ QAudioBuffer& operator=(const QAudioBuffer &other);
- // Structures for easier access to stereo data
- template <typename T> struct StereoFrameDefault { enum { Default = 0 }; };
+ QAudioBuffer(QAudioBuffer &&other) noexcept = default;
+ QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QAudioBuffer)
+ void swap(QAudioBuffer &other) noexcept
+ { d.swap(other.d); }
- template <typename T> struct StereoFrame {
+ bool isValid() const noexcept { return d != nullptr; };
- StereoFrame()
- : left(T(StereoFrameDefault<T>::Default))
- , right(T(StereoFrameDefault<T>::Default))
- {
- }
+ void detach();
- StereoFrame(T leftSample, T rightSample)
- : left(leftSample)
- , right(rightSample)
- {
- }
+ QAudioFormat format() const noexcept;
- StereoFrame& operator=(const StereoFrame &other)
- {
- // Two straight assigns is probably
- // cheaper than a conditional check on
- // self assignment
- left = other.left;
- right = other.right;
- return *this;
- }
+ qsizetype frameCount() const noexcept;
+ qsizetype sampleCount() const noexcept;
+ qsizetype byteCount() const noexcept;
- T left;
- T right;
+ qint64 duration() const noexcept;
+ qint64 startTime() const noexcept;
- T average() const {return (left + right) / 2;}
- void clear() {left = right = T(StereoFrameDefault<T>::Default);}
- };
+ // Structures for easier access to data
+ typedef QAudioFrameMono<QAudioFormat::UInt8> U8M;
+ typedef QAudioFrameMono<QAudioFormat::Int16> S16M;
+ typedef QAudioFrameMono<QAudioFormat::Int32> S32M;
+ typedef QAudioFrameMono<QAudioFormat::Float> F32M;
- typedef StereoFrame<unsigned char> S8U;
- typedef StereoFrame<signed char> S8S;
- typedef StereoFrame<unsigned short> S16U;
- typedef StereoFrame<signed short> S16S;
- typedef StereoFrame<float> S32F;
+ typedef QAudioFrameStereo<QAudioFormat::UInt8> U8S;
+ typedef QAudioFrameStereo<QAudioFormat::Int16> S16S;
+ typedef QAudioFrameStereo<QAudioFormat::Int32> S32S;
+ typedef QAudioFrameStereo<QAudioFormat::Float> F32S;
template <typename T> const T* constData() const {
return static_cast<const T*>(constData());
@@ -137,12 +161,12 @@ public:
return static_cast<T*>(data());
}
private:
- QAudioBufferPrivate *d;
-};
-
-template <> struct QAudioBuffer::StereoFrameDefault<unsigned char> { enum { Default = 128 }; };
-template <> struct QAudioBuffer::StereoFrameDefault<unsigned short> { enum { Default = 32768 }; };
+ const void* constData() const noexcept;
+ const void* data() const noexcept;
+ void *data();
+ QExplicitlySharedDataPointer<QAudioBufferPrivate> d;
+};
QT_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-26 03:20:02 +0000