libaudiohal: Implement simple HIDL client
This client requires both HIDL client and server to be of the same
ABI version (e.g. 32-bit).
EffectHalHidl::process and EffectHalHidl::processReverse are stubs.
Some extra warnings are logged due to unimplemented functions
in the legacy HAL.
Bug: 30222631
Change-Id: Id074131dec6d6c4f1031695abcf3ea066e92a5af
Test: Play Music (play / EQ), YouTube, Loopback RTLT, Ok Google on N5X
diff --git a/media/libaudiohal/StreamHalHidl.cpp b/media/libaudiohal/StreamHalHidl.cpp
new file mode 100644
index 0000000..9383a36
--- /dev/null
+++ b/media/libaudiohal/StreamHalHidl.cpp
@@ -0,0 +1,384 @@
+/*
+ * 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 "StreamHalHidl"
+//#define LOG_NDEBUG 0
+
+#include <android/hardware/audio/2.0/IStreamOutCallback.h>
+#include <utils/Log.h>
+
+#include "DeviceHalHidl.h"
+#include "EffectHalHidl.h"
+#include "StreamHalHidl.h"
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::V2_0::AudioDrain;
+using ::android::hardware::audio::V2_0::IStreamOutCallback;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::V2_0::TimeSpec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+namespace android {
+
+StreamHalHidl::StreamHalHidl(IStream *stream)
+ : ConversionHelperHidl("Stream"), mStream(stream) {
+}
+
+StreamHalHidl::~StreamHalHidl() {
+ mStream = nullptr;
+}
+
+status_t StreamHalHidl::getSampleRate(uint32_t *rate) {
+ if (!mStream) return NO_INIT;
+ return processReturn("getSampleRate", mStream->getSampleRate(), rate);
+}
+
+status_t StreamHalHidl::getBufferSize(size_t *size) {
+ if (!mStream) return NO_INIT;
+ return processReturn("getBufferSize", mStream->getBufferSize(), size);
+}
+
+status_t StreamHalHidl::getChannelMask(audio_channel_mask_t *mask) {
+ if (!mStream) return NO_INIT;
+ return processReturn("getChannelMask", mStream->getChannelMask(), mask);
+}
+
+status_t StreamHalHidl::getFormat(audio_format_t *format) {
+ if (!mStream) return NO_INIT;
+ return processReturn("getFormat", mStream->getFormat(), format);
+}
+
+status_t StreamHalHidl::getAudioProperties(
+ uint32_t *sampleRate, audio_channel_mask_t *mask, audio_format_t *format) {
+ if (!mStream) return NO_INIT;
+ Return<void> ret = mStream->getAudioProperties(
+ [&](uint32_t sr, AudioChannelMask m, AudioFormat f) {
+ *sampleRate = sr;
+ *mask = static_cast<audio_channel_mask_t>(m);
+ *format = static_cast<audio_format_t>(f);
+ });
+ return processReturn("getAudioProperties", ret);
+}
+
+status_t StreamHalHidl::setParameters(const String8& kvPairs) {
+ if (!mStream) return NO_INIT;
+ hidl_vec<ParameterValue> hidlParams;
+ status_t status = parametersFromHal(kvPairs, &hidlParams);
+ if (status != OK) return status;
+ return processReturn("setParameters", mStream->setParameters(hidlParams));
+}
+
+status_t StreamHalHidl::getParameters(const String8& keys, String8 *values) {
+ values->clear();
+ if (!mStream) return NO_INIT;
+ hidl_vec<hidl_string> hidlKeys;
+ status_t status = keysFromHal(keys, &hidlKeys);
+ if (status != OK) return status;
+ Result retval;
+ Return<void> ret = mStream->getParameters(
+ hidlKeys,
+ [&](Result r, const hidl_vec<ParameterValue>& parameters) {
+ retval = r;
+ if (retval == Result::OK) {
+ parametersToHal(parameters, values);
+ }
+ });
+ return processReturn("getParameters", ret, retval);
+}
+
+status_t StreamHalHidl::addEffect(sp<EffectHalInterface> effect) {
+ if (!mStream) return NO_INIT;
+ return processReturn("addEffect", mStream->addEffect(
+ static_cast<EffectHalHidl*>(effect.get())->effectId()));
+}
+
+status_t StreamHalHidl::removeEffect(sp<EffectHalInterface> effect) {
+ if (!mStream) return NO_INIT;
+ return processReturn("removeEffect", mStream->removeEffect(
+ static_cast<EffectHalHidl*>(effect.get())->effectId()));
+}
+
+status_t StreamHalHidl::standby() {
+ if (!mStream) return NO_INIT;
+ return processReturn("standby", mStream->standby());
+}
+
+status_t StreamHalHidl::dump(int fd) {
+ if (!mStream) return NO_INIT;
+ native_handle_t* hidlHandle = native_handle_create(1, 0);
+ hidlHandle->data[0] = fd;
+ Return<void> ret = mStream->debugDump(hidlHandle);
+ native_handle_delete(hidlHandle);
+ return processReturn("dump", ret);
+}
+
+
+namespace {
+
+/* Notes on callback ownership.
+
+This is how (Hw)Binder ownership model looks like. The server implementation
+is owned by Binder framework (via sp<>). Proxies are owned by clients.
+When the last proxy disappears, Binder framework releases the server impl.
+
+Thus, it is not needed to keep any references to StreamOutCallback (this is
+the server impl) -- it will live as long as HAL server holds a strong ref to
+IStreamOutCallback proxy. We clear that reference by calling 'clearCallback'
+from the destructor of StreamOutHalHidl.
+
+The callback only keeps a weak reference to the stream. The stream is owned
+by AudioFlinger.
+
+*/
+
+struct StreamOutCallback : public IStreamOutCallback {
+ StreamOutCallback(const wp<StreamOutHalHidl>& stream) : mStream(stream) {}
+
+ // IStreamOutCallback implementation
+ Return<void> onWriteReady() override {
+ sp<StreamOutHalHidl> stream = mStream.promote();
+ if (stream != 0) {
+ stream->onWriteReady();
+ }
+ return Void();
+ }
+
+ Return<void> onDrainReady() override {
+ sp<StreamOutHalHidl> stream = mStream.promote();
+ if (stream != 0) {
+ stream->onDrainReady();
+ }
+ return Void();
+ }
+
+ Return<void> onError() override {
+ sp<StreamOutHalHidl> stream = mStream.promote();
+ if (stream != 0) {
+ stream->onError();
+ }
+ return Void();
+ }
+
+ private:
+ wp<StreamOutHalHidl> mStream;
+};
+
+} // namespace
+
+StreamOutHalHidl::StreamOutHalHidl(const sp<IStreamOut>& stream)
+ : StreamHalHidl(stream.get()), mStream(stream) {
+}
+
+StreamOutHalHidl::~StreamOutHalHidl() {
+ if (mCallback.unsafe_get() && mStream != 0) {
+ processReturn("clearCallback", mStream->clearCallback());
+ }
+ mCallback.clear();
+}
+
+status_t StreamOutHalHidl::getFrameSize(size_t *size) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("getFrameSize", mStream->getFrameSize(), size);
+}
+
+status_t StreamOutHalHidl::getLatency(uint32_t *latency) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("getLatency", mStream->getLatency(), latency);
+}
+
+status_t StreamOutHalHidl::setVolume(float left, float right) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("setVolume", mStream->setVolume(left, right));
+}
+
+status_t StreamOutHalHidl::write(const void *buffer, size_t bytes, size_t *written) {
+ if (mStream == 0) return NO_INIT;
+ hidl_vec<uint8_t> hidlData;
+ hidlData.setToExternal(static_cast<uint8_t*>(const_cast<void*>(buffer)), bytes);
+ Result retval;
+ Return<void> ret = mStream->write(
+ hidlData,
+ [&](Result r, uint64_t w) {
+ retval = r;
+ *written = w;
+ });
+ return processReturn("write", ret, retval);
+}
+
+status_t StreamOutHalHidl::getRenderPosition(uint32_t *dspFrames) {
+ if (mStream == 0) return NO_INIT;
+ Result retval;
+ Return<void> ret = mStream->getRenderPosition(
+ [&](Result r, uint32_t d) {
+ retval = r;
+ if (retval == Result::OK) {
+ *dspFrames = d;
+ }
+ });
+ return processReturn("getRenderPosition", ret, retval);
+}
+
+status_t StreamOutHalHidl::getNextWriteTimestamp(int64_t *timestamp) {
+ if (mStream == 0) return NO_INIT;
+ Result retval;
+ Return<void> ret = mStream->getNextWriteTimestamp(
+ [&](Result r, int64_t t) {
+ retval = r;
+ if (retval == Result::OK) {
+ *timestamp = t;
+ }
+ });
+ return processReturn("getRenderPosition", ret, retval);
+}
+
+status_t StreamOutHalHidl::setCallback(wp<StreamOutHalInterfaceCallback> callback) {
+ if (mStream == 0) return NO_INIT;
+ status_t status = processReturn(
+ "setCallback", mStream->setCallback(new StreamOutCallback(this)));
+ if (status == OK) {
+ mCallback = callback;
+ }
+ return status;
+}
+
+status_t StreamOutHalHidl::supportsPauseAndResume(bool *supportsPause, bool *supportsResume) {
+ if (mStream == 0) return NO_INIT;
+ Return<void> ret = mStream->supportsPauseAndResume(
+ [&](bool p, bool r) {
+ *supportsPause = p;
+ *supportsResume = r;
+ });
+ return processReturn("supportsPauseAndResume", ret);
+}
+
+status_t StreamOutHalHidl::pause() {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("pause", mStream->pause());
+}
+
+status_t StreamOutHalHidl::resume() {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("pause", mStream->resume());
+}
+
+status_t StreamOutHalHidl::supportsDrain(bool *supportsDrain) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("supportsDrain", mStream->supportsDrain(), supportsDrain);
+}
+
+status_t StreamOutHalHidl::drain(bool earlyNotify) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn(
+ "drain", mStream->drain(earlyNotify ? AudioDrain::EARLY_NOTIFY : AudioDrain::ALL));
+}
+
+status_t StreamOutHalHidl::flush() {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("pause", mStream->flush());
+}
+
+status_t StreamOutHalHidl::getPresentationPosition(uint64_t *frames, struct timespec *timestamp) {
+ if (mStream == 0) return NO_INIT;
+ Result retval;
+ Return<void> ret = mStream->getPresentationPosition(
+ [&](Result r, uint64_t hidlFrames, const TimeSpec& hidlTimeStamp) {
+ retval = r;
+ if (retval == Result::OK) {
+ *frames = hidlFrames;
+ timestamp->tv_sec = hidlTimeStamp.tvSec;
+ timestamp->tv_nsec = hidlTimeStamp.tvNSec;
+ }
+ });
+ return processReturn("getPresentationPosition", ret, retval);
+}
+
+void StreamOutHalHidl::onWriteReady() {
+ sp<StreamOutHalInterfaceCallback> callback = mCallback.promote();
+ if (callback == 0) return;
+ ALOGV("asyncCallback onWriteReady");
+ callback->onWriteReady();
+}
+
+void StreamOutHalHidl::onDrainReady() {
+ sp<StreamOutHalInterfaceCallback> callback = mCallback.promote();
+ if (callback == 0) return;
+ ALOGV("asyncCallback onDrainReady");
+ callback->onDrainReady();
+}
+
+void StreamOutHalHidl::onError() {
+ sp<StreamOutHalInterfaceCallback> callback = mCallback.promote();
+ if (callback == 0) return;
+ ALOGV("asyncCallback onError");
+ callback->onError();
+}
+
+
+StreamInHalHidl::StreamInHalHidl(const sp<IStreamIn>& stream)
+ : StreamHalHidl(stream.get()), mStream(stream) {
+}
+
+StreamInHalHidl::~StreamInHalHidl() {
+}
+
+status_t StreamInHalHidl::getFrameSize(size_t *size) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("getFrameSize", mStream->getFrameSize(), size);
+}
+
+status_t StreamInHalHidl::setGain(float gain) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("setGain", mStream->setGain(gain));
+}
+
+status_t StreamInHalHidl::read(void *buffer, size_t bytes, size_t *read) {
+ if (mStream == 0) return NO_INIT;
+ Result retval;
+ Return<void> ret = mStream->read(
+ bytes,
+ [&](Result r, const hidl_vec<uint8_t>& hidlData) {
+ retval = r;
+ *read = std::min(hidlData.size(), bytes);
+ if (retval == Result::OK) {
+ memcpy(buffer, &hidlData[0], *read);
+ }
+ });
+ return processReturn("read", ret, retval);
+}
+
+status_t StreamInHalHidl::getInputFramesLost(uint32_t *framesLost) {
+ if (mStream == 0) return NO_INIT;
+ return processReturn("getInputFramesLost", mStream->getInputFramesLost(), framesLost);
+}
+
+status_t StreamInHalHidl::getCapturePosition(int64_t *frames, int64_t *time) {
+ if (mStream == 0) return NO_INIT;
+ Result retval;
+ Return<void> ret = mStream->getCapturePosition(
+ [&](Result r, uint64_t hidlFrames, uint64_t hidlTime) {
+ retval = r;
+ if (retval == Result::OK) {
+ *frames = hidlFrames;
+ *time = hidlTime;
+ }
+ });
+ return processReturn("getCapturePosition", ret, retval);
+}
+
+} // namespace android