liboboe: oboe MMAP client interface
Bug: 33347409
Test: test_oboe_api
Change-Id: I2ff3e9b57c91839c6debe91903b3e4b92e82d681
Signed-off-by: Phil Burk <philburk@google.com>
diff --git a/media/liboboe/src/binding/SharedRegionParcelable.cpp b/media/liboboe/src/binding/SharedRegionParcelable.cpp
new file mode 100644
index 0000000..86ce8f3
--- /dev/null
+++ b/media/liboboe/src/binding/SharedRegionParcelable.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * 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 <stdint.h>
+
+#include <sys/mman.h>
+#include <binder/Parcelable.h>
+
+#include <oboe/OboeDefinitions.h>
+
+#include "binding/SharedMemoryParcelable.h"
+#include "binding/SharedRegionParcelable.h"
+
+using android::NO_ERROR;
+using android::status_t;
+using android::Parcel;
+using android::Parcelable;
+
+using namespace oboe;
+
+SharedRegionParcelable::SharedRegionParcelable() {}
+SharedRegionParcelable::~SharedRegionParcelable() {}
+
+void SharedRegionParcelable::setup(int32_t sharedMemoryIndex,
+ int32_t offsetInBytes,
+ int32_t sizeInBytes) {
+ mSharedMemoryIndex = sharedMemoryIndex;
+ mOffsetInBytes = offsetInBytes;
+ mSizeInBytes = sizeInBytes;
+}
+
+status_t SharedRegionParcelable::writeToParcel(Parcel* parcel) const {
+ parcel->writeInt32(mSizeInBytes);
+ if (mSizeInBytes > 0) {
+ parcel->writeInt32(mSharedMemoryIndex);
+ parcel->writeInt32(mOffsetInBytes);
+ }
+ return NO_ERROR; // TODO check for errors above
+}
+
+status_t SharedRegionParcelable::readFromParcel(const Parcel* parcel) {
+ parcel->readInt32(&mSizeInBytes);
+ if (mSizeInBytes > 0) {
+ parcel->readInt32(&mSharedMemoryIndex);
+ parcel->readInt32(&mOffsetInBytes);
+ }
+ return NO_ERROR; // TODO check for errors above
+}
+
+oboe_result_t SharedRegionParcelable::resolve(SharedMemoryParcelable *memoryParcels,
+ void **regionAddressPtr) {
+ if (mSizeInBytes == 0) {
+ *regionAddressPtr = nullptr;
+ return OBOE_OK;
+ }
+ if (mSharedMemoryIndex < 0) {
+ ALOGE("SharedRegionParcelable invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
+ return OBOE_ERROR_INTERNAL;
+ }
+ SharedMemoryParcelable *memoryParcel = &memoryParcels[mSharedMemoryIndex];
+ return memoryParcel->resolve(mOffsetInBytes, mSizeInBytes, regionAddressPtr);
+}
+
+oboe_result_t SharedRegionParcelable::validate() {
+ if (mSizeInBytes < 0 || mSizeInBytes >= MAX_MMAP_SIZE) {
+ ALOGE("SharedRegionParcelable invalid mSizeInBytes = %d", mSizeInBytes);
+ return OBOE_ERROR_INTERNAL;
+ }
+ if (mSizeInBytes > 0) {
+ if (mOffsetInBytes < 0 || mOffsetInBytes >= MAX_MMAP_OFFSET) {
+ ALOGE("SharedRegionParcelable invalid mOffsetInBytes = %d", mOffsetInBytes);
+ return OBOE_ERROR_INTERNAL;
+ }
+ if (mSharedMemoryIndex < 0 || mSharedMemoryIndex >= MAX_SHARED_MEMORIES) {
+ ALOGE("SharedRegionParcelable invalid mSharedMemoryIndex = %d", mSharedMemoryIndex);
+ return OBOE_ERROR_INTERNAL;
+ }
+ }
+ return OBOE_OK;
+}
+
+void SharedRegionParcelable::dump() {
+ ALOGD("SharedRegionParcelable mSizeInBytes = %d -----", mSizeInBytes);
+ if (mSizeInBytes > 0) {
+ ALOGD("SharedRegionParcelable mSharedMemoryIndex = %d", mSharedMemoryIndex);
+ ALOGD("SharedRegionParcelable mOffsetInBytes = %d", mOffsetInBytes);
+ }
+}