Audio V4: Copy 2.0 audiohal to 4.0

For easier review of the changes, first copy 2.0 to 4.0, the changes
are made in the following patch.

Bug: 38184704
Test: compile
Change-Id: I5bf16e5f8e7b61cc13e86c06b899ec4e6624a961
Merged-In: I5bf16e5f8e7b61cc13e86c06b899ec4e6624a961
Cherry-picked from master
Signed-off-by: Kevin Rocard <krocard@google.com>
diff --git a/media/libaudiohal/4.0/EffectsFactoryHalHidl.cpp b/media/libaudiohal/4.0/EffectsFactoryHalHidl.cpp
new file mode 100644
index 0000000..0d40e6d
--- /dev/null
+++ b/media/libaudiohal/4.0/EffectsFactoryHalHidl.cpp
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#define LOG_TAG "EffectsFactoryHalHidl"
+//#define LOG_NDEBUG 0
+
+#include <cutils/native_handle.h>
+
+#include "ConversionHelperHidl.h"
+#include "EffectBufferHalHidl.h"
+#include "EffectHalHidl.h"
+#include "EffectsFactoryHalHidl.h"
+#include "HidlUtils.h"
+
+using ::android::hardware::audio::common::V2_0::HidlUtils;
+using ::android::hardware::audio::common::V2_0::Uuid;
+using ::android::hardware::audio::effect::V2_0::IEffect;
+using ::android::hardware::audio::effect::V2_0::Result;
+using ::android::hardware::Return;
+
+namespace android {
+
+EffectsFactoryHalHidl::EffectsFactoryHalHidl() : ConversionHelperHidl("EffectsFactory") {
+    mEffectsFactory = IEffectsFactory::getService();
+    if (mEffectsFactory == 0) {
+        ALOGE("Failed to obtain IEffectsFactory service, terminating process.");
+        exit(1);
+    }
+}
+
+EffectsFactoryHalHidl::~EffectsFactoryHalHidl() {
+}
+
+status_t EffectsFactoryHalHidl::queryAllDescriptors() {
+    if (mEffectsFactory == 0) return NO_INIT;
+    Result retval = Result::NOT_INITIALIZED;
+    Return<void> ret = mEffectsFactory->getAllDescriptors(
+            [&](Result r, const hidl_vec<EffectDescriptor>& result) {
+                retval = r;
+                if (retval == Result::OK) {
+                    mLastDescriptors = result;
+                }
+            });
+    if (ret.isOk()) {
+        return retval == Result::OK ? OK : NO_INIT;
+    }
+    mLastDescriptors.resize(0);
+    return processReturn(__FUNCTION__, ret);
+}
+
+status_t EffectsFactoryHalHidl::queryNumberEffects(uint32_t *pNumEffects) {
+    status_t queryResult = queryAllDescriptors();
+    if (queryResult == OK) {
+        *pNumEffects = mLastDescriptors.size();
+    }
+    return queryResult;
+}
+
+status_t EffectsFactoryHalHidl::getDescriptor(
+        uint32_t index, effect_descriptor_t *pDescriptor) {
+    // TODO: We need somehow to track the changes on the server side
+    // or figure out how to convert everybody to query all the descriptors at once.
+    // TODO: check for nullptr
+    if (mLastDescriptors.size() == 0) {
+        status_t queryResult = queryAllDescriptors();
+        if (queryResult != OK) return queryResult;
+    }
+    if (index >= mLastDescriptors.size()) return NAME_NOT_FOUND;
+    EffectHalHidl::effectDescriptorToHal(mLastDescriptors[index], pDescriptor);
+    return OK;
+}
+
+status_t EffectsFactoryHalHidl::getDescriptor(
+        const effect_uuid_t *pEffectUuid, effect_descriptor_t *pDescriptor) {
+    // TODO: check for nullptr
+    if (mEffectsFactory == 0) return NO_INIT;
+    Uuid hidlUuid;
+    HidlUtils::uuidFromHal(*pEffectUuid, &hidlUuid);
+    Result retval = Result::NOT_INITIALIZED;
+    Return<void> ret = mEffectsFactory->getDescriptor(hidlUuid,
+            [&](Result r, const EffectDescriptor& result) {
+                retval = r;
+                if (retval == Result::OK) {
+                    EffectHalHidl::effectDescriptorToHal(result, pDescriptor);
+                }
+            });
+    if (ret.isOk()) {
+        if (retval == Result::OK) return OK;
+        else if (retval == Result::INVALID_ARGUMENTS) return NAME_NOT_FOUND;
+        else return NO_INIT;
+    }
+    return processReturn(__FUNCTION__, ret);
+}
+
+status_t EffectsFactoryHalHidl::createEffect(
+        const effect_uuid_t *pEffectUuid, int32_t sessionId, int32_t ioId,
+        sp<EffectHalInterface> *effect) {
+    if (mEffectsFactory == 0) return NO_INIT;
+    Uuid hidlUuid;
+    HidlUtils::uuidFromHal(*pEffectUuid, &hidlUuid);
+    Result retval = Result::NOT_INITIALIZED;
+    Return<void> ret = mEffectsFactory->createEffect(
+            hidlUuid, sessionId, ioId,
+            [&](Result r, const sp<IEffect>& result, uint64_t effectId) {
+                retval = r;
+                if (retval == Result::OK) {
+                    *effect = new EffectHalHidl(result, effectId);
+                }
+            });
+    if (ret.isOk()) {
+        if (retval == Result::OK) return OK;
+        else if (retval == Result::INVALID_ARGUMENTS) return NAME_NOT_FOUND;
+        else return NO_INIT;
+    }
+    return processReturn(__FUNCTION__, ret);
+}
+
+status_t EffectsFactoryHalHidl::dumpEffects(int fd) {
+    if (mEffectsFactory == 0) return NO_INIT;
+    native_handle_t* hidlHandle = native_handle_create(1, 0);
+    hidlHandle->data[0] = fd;
+    Return<void> ret = mEffectsFactory->debugDump(hidlHandle);
+    native_handle_delete(hidlHandle);
+    return processReturn(__FUNCTION__, ret);
+}
+
+status_t EffectsFactoryHalHidl::allocateBuffer(size_t size, sp<EffectBufferHalInterface>* buffer) {
+    return EffectBufferHalHidl::allocate(size, buffer);
+}
+
+status_t EffectsFactoryHalHidl::mirrorBuffer(void* external, size_t size,
+                          sp<EffectBufferHalInterface>* buffer) {
+    return EffectBufferHalHidl::mirror(external, size, buffer);
+}
+
+
+} // namespace android