1 files changed, 60 insertions, 0 deletions
diff --git a/src/plugins/multimedia/ffmpeg/qffmpegresampler_p.h b/src/plugins/multimedia/ffmpeg/qffmpegresampler_p.h
new file mode 100644
index 000000000..5109ecf11
--- /dev/null
+++ b/src/plugins/multimedia/ffmpeg/qffmpegresampler_p.h
@@ -0,0 +1,60 @@
+// Copyright (C) 2022 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 QFFMPEGRESAMPLER_P_H
+#define QFFMPEGRESAMPLER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qaudiobuffer.h"
+#include "qffmpeg_p.h"
+#include "private/qplatformaudioresampler_p.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QFFmpeg
+{
+class Codec;
+}
+
+class QFFmpegResampler : public QPlatformAudioResampler
+{
+public:
+    QFFmpegResampler(const QAudioFormat &inputFormat, const QAudioFormat &outputFormat);
+    QFFmpegResampler(const QFFmpeg::Codec* codec, const QAudioFormat &outputFormat);
+
+    ~QFFmpegResampler() override;
+
+    QAudioBuffer resample(const char* data, size_t size) override;
+
+    QAudioBuffer resample(const AVFrame *frame);
+
+    qint64 samplesProcessed() const { return m_samplesProcessed; }
+    void setSampleCompensation(qint32 delta, quint32 distance);
+    qint32 activeSampleCompensationDelta() const;
+
+private:
+    int adjustMaxOutSamples(int inputSamplesCount);
+
+    QAudioBuffer resample(const uint8_t **inputData, int inputSamplesCount);
+
+private:
+    QAudioFormat m_inputFormat;
+    QAudioFormat m_outputFormat;
+    QFFmpeg::SwrContextUPtr m_resampler;
+    qint64 m_samplesProcessed = 0;
+    qint64 m_endCompensationSample = std::numeric_limits<qint64>::min();
+    qint32 m_sampleCompensationDelta = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif