audio: Generalize stream implementations
This allows for more code reuse and composability when
implementing streams for a particular audio "backend."
The existing "stub" code has been moved to StreamStub* files.
Bug: 264712385
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I97fd41f87eb6d01e1d57f0d70a86d3b2b3555837
diff --git a/audio/aidl/default/StreamStub.cpp b/audio/aidl/default/StreamStub.cpp
new file mode 100644
index 0000000..5442179
--- /dev/null
+++ b/audio/aidl/default/StreamStub.cpp
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2023 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 "AHAL_Stream"
+#include <android-base/logging.h>
+
+#include "core-impl/Module.h"
+#include "core-impl/StreamStub.h"
+
+using aidl::android::hardware::audio::common::SinkMetadata;
+using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::media::audio::common::AudioOffloadInfo;
+
+namespace aidl::android::hardware::audio::core {
+
+DriverStub::DriverStub(const StreamContext& context, bool isInput)
+ : mFrameSizeBytes(context.getFrameSize()), mIsInput(isInput) {}
+
+::android::status_t DriverStub::init() {
+ usleep(1000);
+ return ::android::OK;
+}
+
+::android::status_t DriverStub::drain(StreamDescriptor::DrainMode) {
+ usleep(1000);
+ return ::android::OK;
+}
+
+::android::status_t DriverStub::flush() {
+ usleep(1000);
+ return ::android::OK;
+}
+
+::android::status_t DriverStub::pause() {
+ usleep(1000);
+ return ::android::OK;
+}
+
+::android::status_t DriverStub::transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
+ int32_t* latencyMs) {
+ usleep(3000);
+ if (mIsInput) {
+ uint8_t* byteBuffer = static_cast<uint8_t*>(buffer);
+ for (size_t i = 0; i < frameCount * mFrameSizeBytes; ++i) {
+ byteBuffer[i] = std::rand() % 255;
+ }
+ }
+ *actualFrameCount = frameCount;
+ *latencyMs = Module::kLatencyMs;
+ return ::android::OK;
+}
+
+::android::status_t DriverStub::standby() {
+ usleep(1000);
+ return ::android::OK;
+}
+
+// static
+ndk::ScopedAStatus StreamInStub::createInstance(const SinkMetadata& sinkMetadata,
+ StreamContext&& context,
+ const std::vector<MicrophoneInfo>& microphones,
+ std::shared_ptr<StreamIn>* result) {
+ std::shared_ptr<StreamIn> stream =
+ ndk::SharedRefBase::make<StreamInStub>(sinkMetadata, std::move(context), microphones);
+ if (auto status = initInstance(stream); !status.isOk()) {
+ return status;
+ }
+ *result = std::move(stream);
+ return ndk::ScopedAStatus::ok();
+}
+
+StreamInStub::StreamInStub(const SinkMetadata& sinkMetadata, StreamContext&& context,
+ const std::vector<MicrophoneInfo>& microphones)
+ : StreamIn(
+ sinkMetadata, std::move(context),
+ [](const StreamContext& ctx) -> DriverInterface* {
+ return new DriverStub(ctx, true /*isInput*/);
+ },
+ [](const StreamContext& ctx, DriverInterface* driver) -> StreamWorkerInterface* {
+ // The default worker implementation is used.
+ return new StreamInWorker(ctx, driver);
+ },
+ microphones) {}
+
+// static
+ndk::ScopedAStatus StreamOutStub::createInstance(const SourceMetadata& sourceMetadata,
+ StreamContext&& context,
+ const std::optional<AudioOffloadInfo>& offloadInfo,
+ std::shared_ptr<StreamOut>* result) {
+ std::shared_ptr<StreamOut> stream = ndk::SharedRefBase::make<StreamOutStub>(
+ sourceMetadata, std::move(context), offloadInfo);
+ if (auto status = initInstance(stream); !status.isOk()) {
+ return status;
+ }
+ *result = std::move(stream);
+ return ndk::ScopedAStatus::ok();
+}
+
+StreamOutStub::StreamOutStub(const SourceMetadata& sourceMetadata, StreamContext&& context,
+ const std::optional<AudioOffloadInfo>& offloadInfo)
+ : StreamOut(
+ sourceMetadata, std::move(context),
+ [](const StreamContext& ctx) -> DriverInterface* {
+ return new DriverStub(ctx, false /*isInput*/);
+ },
+ [](const StreamContext& ctx, DriverInterface* driver) -> StreamWorkerInterface* {
+ // The default worker implementation is used.
+ return new StreamOutWorker(ctx, driver);
+ },
+ offloadInfo) {}
+
+} // namespace aidl::android::hardware::audio::core