import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

netwerk/protocol/device/CameraStreamImpl.cpp

@@ -0,0 +1,114 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "CameraStreamImpl.h"
+#include "GeneratedJNINatives.h"
+#include "nsCRTGlue.h"
+#include "nsThreadUtils.h"
+#include "nsXULAppAPI.h"
+#include "mozilla/Monitor.h"
+
+using namespace mozilla;
+
+namespace mozilla {
+namespace net {
+
+static CameraStreamImpl* mCamera0 = nullptr;
+static CameraStreamImpl* mCamera1 = nullptr;
+
+class CameraStreamImpl::Callback
+    : public java::GeckoAppShell::CameraCallback::Natives<Callback>
+{
+public:
+    static void OnFrameData(int32_t aCamera, jni::ByteArray::Param aData)
+    {
+        MOZ_ASSERT(NS_IsMainThread());
+
+        CameraStreamImpl* impl = GetInstance(uint32_t(aCamera));
+        if (impl) {
+            impl->TransmitFrame(aData);
+        }
+    }
+};
+
+/**
+ * CameraStreamImpl
+ */
+
+void CameraStreamImpl::TransmitFrame(jni::ByteArray::Param aData) {
+    if (!mCallback) {
+        return;
+    }
+
+    JNIEnv* const env = jni::GetGeckoThreadEnv();
+    const size_t length = size_t(env->GetArrayLength(aData.Get()));
+
+    if (!length) {
+        return;
+    }
+
+    jbyte* const data = env->GetByteArrayElements(aData.Get(), nullptr);
+    mCallback->ReceiveFrame(reinterpret_cast<char*>(data), length);
+    env->ReleaseByteArrayElements(aData.Get(), data, JNI_ABORT);
+}
+
+CameraStreamImpl* CameraStreamImpl::GetInstance(uint32_t aCamera) {
+    CameraStreamImpl* res = nullptr;
+    switch(aCamera) {
+        case 0:
+            if (mCamera0)
+                res = mCamera0;
+            else
+                res = mCamera0 = new CameraStreamImpl(aCamera);
+            break;
+        case 1:
+            if (mCamera1)
+                res = mCamera1;
+            else
+                res = mCamera1 = new CameraStreamImpl(aCamera);
+            break;
+    }
+    return res;
+}
+
+
+CameraStreamImpl::CameraStreamImpl(uint32_t aCamera) :
+ mInit(false), mCamera(aCamera)
+{
+    NS_WARNING("CameraStreamImpl::CameraStreamImpl()");
+    mWidth = 0;
+    mHeight = 0;
+    mFps = 0;
+}
+
+CameraStreamImpl::~CameraStreamImpl()
+{
+    NS_WARNING("CameraStreamImpl::~CameraStreamImpl()");
+}
+
+bool CameraStreamImpl::Init(const nsCString& contentType, const uint32_t& camera, const uint32_t& width, const uint32_t& height, FrameCallback* aCallback)
+{
+    mCallback = aCallback;
+    mWidth = width;
+    mHeight = height;
+
+    Callback::Init();
+    jni::IntArray::LocalRef retArray = java::GeckoAppShell::InitCamera(
+            contentType, int32_t(camera), int32_t(width), int32_t(height));
+    nsTArray<int32_t> ret = retArray->GetElements();
+
+    mWidth = uint32_t(ret[1]);
+    mHeight = uint32_t(ret[2]);
+    mFps = uint32_t(ret[3]);
+
+    return !!ret[0];
+}
+
+void CameraStreamImpl::Close() {
+    java::GeckoAppShell::CloseCamera();
+    mCallback = nullptr;
+}
+
+} // namespace net
+} // namespace mozilla