webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 124 insertions, 0 deletions

diff --git a/Source/WebCore/platform/mediastream/CaptureDeviceManager.cpp b/Source/WebCore/platform/mediastream/CaptureDeviceManager.cpp
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index 000000000..19fe3a02f
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+++ b/Source/WebCore/platform/mediastream/CaptureDeviceManager.cpp
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+/*
+ * Copyright (C) 2015-2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "config.h"
+#import "CaptureDeviceManager.h"
+
+#if ENABLE(MEDIA_STREAM)
+
+#import "Logging.h"
+#import "MediaConstraints.h"
+#import "RealtimeMediaSource.h"
+#import "RealtimeMediaSourceCenter.h"
+#import "RealtimeMediaSourceSettings.h"
+#import "UUID.h"
+#import <wtf/MainThread.h>
+#import <wtf/NeverDestroyed.h>
+#import <wtf/text/StringHash.h>
+
+using namespace WebCore;
+
+CaptureDeviceManager::~CaptureDeviceManager()
+{
+}
+
+Vector<CaptureDevice> CaptureDeviceManager::getSourcesInfo()
+{
+    Vector<CaptureDevice> sourcesInfo;
+    for (auto captureDevice : captureDevices()) {
+        if (!captureDevice.enabled() || captureDevice.type() == CaptureDevice::DeviceType::Unknown)
+            continue;
+
+        sourcesInfo.append(captureDevice);
+    }
+    LOG(Media, "CaptureDeviceManager::getSourcesInfo(%p), found %zu active devices", this, sourcesInfo.size());
+    return sourcesInfo;
+}
+
+bool CaptureDeviceManager::captureDeviceFromDeviceID(const String& captureDeviceID, CaptureDevice& foundDevice)
+{
+    for (auto& device : captureDevices()) {
+        if (device.persistentId() == captureDeviceID) {
+            foundDevice = device;
+            return true;
+        }
+    }
+
+    return false;
+}
+
+Vector<String> CaptureDeviceManager::bestSourcesForTypeAndConstraints(RealtimeMediaSource::Type type, const MediaConstraints& constraints, String& invalidConstraint)
+{
+    Vector<RefPtr<RealtimeMediaSource>> bestSources;
+
+    struct {
+        bool operator()(RefPtr<RealtimeMediaSource> a, RefPtr<RealtimeMediaSource> b)
+        {
+            return a->fitnessScore() < b->fitnessScore();
+        }
+    } sortBasedOnFitnessScore;
+
+    CaptureDevice::DeviceType deviceType = type == RealtimeMediaSource::Video ? CaptureDevice::DeviceType::Video : CaptureDevice::DeviceType::Audio;
+    for (auto& captureDevice : captureDevices()) {
+        if (!captureDevice.enabled() || captureDevice.type() != deviceType)
+            continue;
+
+        if (auto captureSource = createMediaSourceForCaptureDeviceWithConstraints(captureDevice, &constraints, invalidConstraint))
+            bestSources.append(captureSource.leakRef());
+    }
+
+    Vector<String> sourceUIDs;
+    if (bestSources.isEmpty())
+        return sourceUIDs;
+
+    sourceUIDs.reserveInitialCapacity(bestSources.size());
+    std::sort(bestSources.begin(), bestSources.end(), sortBasedOnFitnessScore);
+    for (auto& device : bestSources)
+        sourceUIDs.uncheckedAppend(device->persistentID());
+
+    return sourceUIDs;
+}
+
+RefPtr<RealtimeMediaSource> CaptureDeviceManager::sourceWithUID(const String& deviceUID, RealtimeMediaSource::Type type, const MediaConstraints* constraints, String& invalidConstraint)
+{
+    for (auto& captureDevice : captureDevices()) {
+        if (type == RealtimeMediaSource::None)
+            continue;
+
+        CaptureDevice::DeviceType deviceType = type == RealtimeMediaSource::Video ? CaptureDevice::DeviceType::Video : CaptureDevice::DeviceType::Audio;
+        if (captureDevice.persistentId() != deviceUID || captureDevice.type() != deviceType)
+            continue;
+
+        if (!captureDevice.enabled())
+            continue;
+
+        if (auto mediaSource = createMediaSourceForCaptureDeviceWithConstraints(captureDevice, constraints, invalidConstraint))
+            return mediaSource;
+    }
+
+    return nullptr;
+}
+
+#endif // ENABLE(MEDIA_STREAM)