Re-implement HIDL effect processing using FMQ and IMemory
Result: no hwbinder calls due music processing.
Test: make, use Play Music with effects, check traces
Bug: 30222631
Change-Id: I06d0e94e603688874b31824427f3b0878b5f7c8e
diff --git a/media/libaudiohal/EffectBufferHalHidl.cpp b/media/libaudiohal/EffectBufferHalHidl.cpp
new file mode 100644
index 0000000..446d2ef
--- /dev/null
+++ b/media/libaudiohal/EffectBufferHalHidl.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2017 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 <atomic>
+
+#define LOG_TAG "EffectBufferHalHidl"
+//#define LOG_NDEBUG 0
+
+#include <android/hidl/memory/1.0/IAllocator.h>
+#include <hidlmemory/mapping.h>
+#include <utils/Log.h>
+
+#include "ConversionHelperHidl.h"
+#include "EffectBufferHalHidl.h"
+
+using ::android::hardware::Return;
+using ::android::hardware::Status;
+using ::android::hidl::memory::V1_0::IAllocator;
+
+namespace android {
+
+// static
+uint64_t EffectBufferHalHidl::makeUniqueId() {
+ static std::atomic<uint64_t> counter{1};
+ return counter++;
+}
+
+// static
+status_t EffectBufferHalInterface::allocate(
+ size_t size, sp<EffectBufferHalInterface>* buffer) {
+ return mirror(nullptr, size, buffer);
+}
+
+// static
+status_t EffectBufferHalInterface::mirror(
+ void* external, size_t size, sp<EffectBufferHalInterface>* buffer) {
+ sp<EffectBufferHalInterface> tempBuffer = new EffectBufferHalHidl(size);
+ status_t result = reinterpret_cast<EffectBufferHalHidl*>(tempBuffer.get())->init();
+ if (result == OK) {
+ tempBuffer->setExternalData(external);
+ *buffer = tempBuffer;
+ }
+ return result;
+}
+
+EffectBufferHalHidl::EffectBufferHalHidl(size_t size)
+ : mBufferSize(size), mExternalData(nullptr), mAudioBuffer{0, {nullptr}} {
+ mHidlBuffer.id = makeUniqueId();
+ mHidlBuffer.frameCount = 0;
+}
+
+EffectBufferHalHidl::~EffectBufferHalHidl() {
+}
+
+status_t EffectBufferHalHidl::init() {
+ sp<IAllocator> ashmem = IAllocator::getService("ashmem");
+ if (ashmem == 0) {
+ ALOGE("Failed to retrieve ashmem allocator service");
+ return NO_INIT;
+ }
+ status_t retval = NO_MEMORY;
+ Return<void> result = ashmem->allocate(
+ mBufferSize,
+ [&](bool success, const hidl_memory& memory) {
+ if (success) {
+ mHidlBuffer.data = memory;
+ retval = OK;
+ }
+ });
+ if (retval == OK) {
+ mMemory = hardware::mapMemory(mHidlBuffer.data);
+ if (mMemory != 0) {
+ mMemory->update();
+ mAudioBuffer.raw = static_cast<void*>(mMemory->getPointer());
+ memset(mAudioBuffer.raw, 0, mMemory->getSize());
+ mMemory->commit();
+ } else {
+ ALOGE("Failed to map allocated ashmem");
+ retval = NO_MEMORY;
+ }
+ }
+ return retval;
+}
+
+audio_buffer_t* EffectBufferHalHidl::audioBuffer() {
+ return &mAudioBuffer;
+}
+
+void* EffectBufferHalHidl::externalData() const {
+ return mExternalData;
+}
+
+void EffectBufferHalHidl::setFrameCount(size_t frameCount) {
+ mHidlBuffer.frameCount = frameCount;
+ mAudioBuffer.frameCount = frameCount;
+}
+
+void EffectBufferHalHidl::setExternalData(void* external) {
+ mExternalData = external;
+}
+
+void EffectBufferHalHidl::update() {
+ if (mExternalData == nullptr) return;
+ mMemory->update();
+ memcpy(mAudioBuffer.raw, mExternalData, mBufferSize);
+ mMemory->commit();
+}
+
+void EffectBufferHalHidl::commit() {
+ if (mExternalData == nullptr) return;
+ memcpy(mExternalData, mAudioBuffer.raw, mBufferSize);
+}
+
+} // namespace android