1 files changed, 107 insertions, 0 deletions
diff --git a/src/plugins/multimedia/wasm/common/qwasmaudioinput.cpp b/src/plugins/multimedia/wasm/common/qwasmaudioinput.cpp
new file mode 100644
index 000000000..a0418c5c2
--- /dev/null
+++ b/src/plugins/multimedia/wasm/common/qwasmaudioinput.cpp
@@ -0,0 +1,107 @@
+// 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
+
+#include "qwasmaudioinput_p.h"
+
+#include <qaudioinput.h>
+#include <private/qstdweb_p.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_LOGGING_CATEGORY(qWasmAudioInput, "qt.multimedia.wasm.audioinput")
+
+QWasmAudioInput::QWasmAudioInput(QAudioInput *parent)
+    : QObject(parent), QPlatformAudioInput(parent)
+{
+    m_wasMuted = false;
+    setDeviceSourceStream("");
+}
+
+QWasmAudioInput::~QWasmAudioInput()
+{
+}
+
+void QWasmAudioInput::setMuted(bool muted)
+{
+    qCDebug(qWasmAudioInput) << Q_FUNC_INFO << muted;
+    if (muted == m_wasMuted)
+        return;
+    if (m_mediaStream.isNull() || m_mediaStream.isUndefined())
+        return;
+    emscripten::val audioTracks = m_mediaStream.call<emscripten::val>("getAudioTracks");
+    if (audioTracks.isNull() || audioTracks.isUndefined())
+        return;
+    if (audioTracks["length"].as<int>() < 1)
+        return;
+    audioTracks[0].set("muted", muted);
+
+    emit mutedChanged(muted);
+    m_wasMuted = muted;
+
+}
+
+bool QWasmAudioInput::isMuted() const
+{
+    return m_wasMuted;
+}
+
+void QWasmAudioInput::setAudioDevice(const QAudioDevice &audioDevice)
+{
+    if (device == audioDevice)
+        return;
+
+    device = audioDevice;
+    setDeviceSourceStream(device.id().toStdString());
+}
+
+void QWasmAudioInput::setVolume(float volume)
+{
+    Q_UNUSED(volume)
+  // TODO seems no easy way to set input volume
+}
+
+void QWasmAudioInput::setDeviceSourceStream(const std::string &id)
+{
+    qCDebug(qWasmAudioInput) << Q_FUNC_INFO << id;
+    emscripten::val navigator = emscripten::val::global("navigator");
+    emscripten::val mediaDevices = navigator["mediaDevices"];
+
+    if (mediaDevices.isNull() || mediaDevices.isUndefined()) {
+        qWarning() << "No media devices found";
+        return;
+    }
+
+    qstdweb::PromiseCallbacks getUserMediaCallback{
+        // default
+        .thenFunc =
+                [this](emscripten::val stream) {
+                    qCDebug(qWasmAudioInput) << "getUserMediaSuccess";
+                    m_mediaStream = stream;
+                },
+        .catchFunc =
+                [](emscripten::val error) {
+                    qCDebug(qWasmAudioInput)
+                            << "addCameraSourceElement getUserMedia  fail"
+                            << QString::fromStdString(error["name"].as<std::string>())
+                            << QString::fromStdString(error["message"].as<std::string>());
+                }
+    };
+
+    emscripten::val constraints = emscripten::val::object();
+    constraints.set("audio", true);
+    if (!id.empty())
+        constraints.set("deviceId", id);
+
+    // we do it this way as this prompts user for mic permissions
+    qstdweb::Promise::make(mediaDevices, QStringLiteral("getUserMedia"),
+                           std::move(getUserMediaCallback), constraints);
+}
+
+emscripten::val QWasmAudioInput::mediaStream()
+{
+    return m_mediaStream;
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qwasmaudioinput_p.cpp"