1 files changed, 119 insertions, 0 deletions
diff --git a/Common/ViperBuffer.cpp b/Common/ViperBuffer.cpp
new file mode 100644
index 00000000..27ec8b5e
--- /dev/null
+++ b/Common/ViperBuffer.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ViperBuffer.h"
+ViperBuffer::ViperBuffer(QObject* parent) :
+    QIODevice(parent)
+{
+    readMax = 32768;
+    readBuffer = (uint8_t*)malloc(sizeof(uint8_t)*readMax);
+    pthread_mutex_init(&(this->monitorMutex), NULL);
+    qByteArrayVector.reserve(2);
+    qByteArrayVector.push_back(new QByteArray());
+    qByteArrayVector.push_back(new QByteArray());
+    indexReadBuffer = 0;
+    indexWriteBuffer = 0;
+}
+
+ViperBuffer::~ViperBuffer()
+{
+    pthread_mutex_destroy(&(this->monitorMutex));
+    free(readBuffer);
+}
+
+bool ViperBuffer::isSequential() const
+{
+    return true;
+}
+
+bool ViperBuffer::open(OpenMode mode)
+{
+    setOpenMode(mode);
+    return true;
+}
+
+void ViperBuffer::close()
+{
+    qByteArrayVector.clear();
+    setOpenMode(NotOpen);
+}
+
+void ViperBuffer::clear()
+{
+    qByteArrayVector.at(0)->clear();
+    qByteArrayVector.at(1)->clear();
+    indexReadBuffer = 0;
+    indexWriteBuffer = 0;
+}
+
+qint64 ViperBuffer::readData(char* data, qint64 maxSize)
+{
+    pthread_mutex_lock(&(this->monitorMutex));
+    if ((maxSize = qMin(maxSize, qint64(qByteArrayVector.at(indexReadBuffer)->size()))) <= 0)
+    {
+        pthread_mutex_unlock(&(this->monitorMutex));
+        return qint64(0);
+    }
+    memcpy(data, qByteArrayVector.at(indexReadBuffer)->constData(), maxSize);
+    qByteArrayVector.at(indexReadBuffer)->remove(0,maxSize);
+    pthread_mutex_unlock(&(this->monitorMutex));
+    return maxSize;
+
+}
+
+qint64 ViperBuffer::writeData(libdash::framework::input::MediaObject* media)
+{
+    pthread_mutex_lock(&(this->monitorMutex));
+    int ret = 0;
+    int total = 0;
+    ret = media->ReadInitSegment(readBuffer,readMax);
+    total += ret;
+    this->writeData((const char *)readBuffer, ret);
+
+    ret = media->Read(readBuffer,readMax);
+    while(ret)
+    {
+        total += ret;
+        this->writeData((const char *)readBuffer, ret);
+        ret = media->Read(readBuffer,readMax);
+    }
+    pthread_mutex_unlock(&(this->monitorMutex));
+    return total;
+}
+
+qint64 ViperBuffer::writeData(const char* data, qint64 maxSize)
+{
+    qByteArrayVector.at(indexWriteBuffer)->append(data, maxSize);
+    return maxSize;
+}
+
+
+void ViperBuffer::writeToNextBuffer()
+{
+
+    pthread_mutex_lock(&(this->monitorMutex));
+    indexWriteBuffer = (indexWriteBuffer + 1 ) % 2;
+    pthread_mutex_unlock(&(this->monitorMutex));
+
+}
+
+void ViperBuffer::readFromNextBuffer()
+{
+    pthread_mutex_lock(&(this->monitorMutex));
+    indexReadBuffer = (indexReadBuffer + 1 ) % 2;
+    pthread_mutex_unlock(&(this->monitorMutex));
+
+}
+