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/*
* Copyright (C) 2018 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 "SoundTriggerHw"
#include "SoundTriggerHw.h"
#include <utility>
#include <android/hidl/allocator/1.0/IAllocator.h>
#include <android/log.h>
#include <hidlmemory/mapping.h>
using android::hardware::hidl_memory;
using android::hidl::allocator::V1_0::IAllocator;
using android::hidl::memory::V1_0::IMemory;
namespace android {
namespace hardware {
namespace soundtrigger {
namespace V2_1 {
namespace implementation {
namespace {
// Backs up by the vector with the contents of shared memory.
// It is assumed that the passed hidl_vector is empty, so it's
// not cleared if the memory is a null object.
// The caller needs to keep the returned sp<IMemory> as long as
// the data is needed.
std::pair<bool, sp<IMemory>> memoryAsVector(const hidl_memory& m, hidl_vec<uint8_t>* vec) {
sp<IMemory> memory;
if (m.size() == 0) {
return std::make_pair(true, memory);
}
memory = mapMemory(m);
if (memory != nullptr) {
memory->read();
vec->setToExternal(static_cast<uint8_t*>(static_cast<void*>(memory->getPointer())),
memory->getSize());
return std::make_pair(true, memory);
}
ALOGE("%s: Could not map HIDL memory to IMemory", __func__);
return std::make_pair(false, memory);
}
// Moves the data from the vector into allocated shared memory,
// emptying the vector.
// It is assumed that the passed hidl_memory is a null object, so it's
// not reset if the vector is empty.
// The caller needs to keep the returned sp<IMemory> as long as
// the data is needed.
std::pair<bool, sp<IMemory>> moveVectorToMemory(hidl_vec<uint8_t>* v, hidl_memory* mem) {
sp<IMemory> memory;
if (v->size() == 0) {
return std::make_pair(true, memory);
}
sp<IAllocator> ashmem = IAllocator::getService("ashmem");
if (ashmem == 0) {
ALOGE("Failed to retrieve ashmem allocator service");
return std::make_pair(false, memory);
}
bool success = false;
Return<void> r = ashmem->allocate(v->size(), [&](bool s, const hidl_memory& m) {
success = s;
if (success) *mem = m;
});
if (r.isOk() && success) {
memory = hardware::mapMemory(*mem);
if (memory != 0) {
memory->update();
memcpy(memory->getPointer(), v->data(), v->size());
memory->commit();
v->resize(0);
return std::make_pair(true, memory);
} else {
ALOGE("Failed to map allocated ashmem");
}
} else {
ALOGE("Failed to allocate %llu bytes from ashmem", (unsigned long long)v->size());
}
return std::make_pair(false, memory);
}
} // namespace
Return<void> SoundTriggerHw::loadSoundModel_2_1(
const V2_1::ISoundTriggerHw::SoundModel& soundModel,
const sp<V2_1::ISoundTriggerHwCallback>& callback, int32_t cookie,
V2_1::ISoundTriggerHw::loadSoundModel_2_1_cb _hidl_cb) {
// It is assumed that legacy data vector is empty, thus making copy is cheap.
V2_0::ISoundTriggerHw::SoundModel soundModel_2_0(soundModel.header);
auto result = memoryAsVector(soundModel.data, &soundModel_2_0.data);
if (result.first) {
sp<SoundModelClient> client =
new SoundModelClient_2_1(nextUniqueModelId(), cookie, callback);
_hidl_cb(doLoadSoundModel(soundModel_2_0, client), client->getId());
return Void();
}
_hidl_cb(-ENOMEM, 0);
return Void();
}
Return<void> SoundTriggerHw::loadPhraseSoundModel_2_1(
const V2_1::ISoundTriggerHw::PhraseSoundModel& soundModel,
const sp<V2_1::ISoundTriggerHwCallback>& callback, int32_t cookie,
V2_1::ISoundTriggerHw::loadPhraseSoundModel_2_1_cb _hidl_cb) {
V2_0::ISoundTriggerHw::PhraseSoundModel soundModel_2_0;
// It is assumed that legacy data vector is empty, thus making copy is cheap.
soundModel_2_0.common = soundModel.common.header;
// Avoid copying phrases data.
soundModel_2_0.phrases.setToExternal(
const_cast<V2_0::ISoundTriggerHw::Phrase*>(soundModel.phrases.data()),
soundModel.phrases.size());
auto result = memoryAsVector(soundModel.common.data, &soundModel_2_0.common.data);
if (result.first) {
sp<SoundModelClient> client =
new SoundModelClient_2_1(nextUniqueModelId(), cookie, callback);
_hidl_cb(doLoadSoundModel((const V2_0::ISoundTriggerHw::SoundModel&)soundModel_2_0, client),
client->getId());
return Void();
}
_hidl_cb(-ENOMEM, 0);
return Void();
}
Return<int32_t> SoundTriggerHw::startRecognition_2_1(
int32_t modelHandle, const V2_1::ISoundTriggerHw::RecognitionConfig& config) {
// It is assumed that legacy data vector is empty, thus making copy is cheap.
V2_0::ISoundTriggerHw::RecognitionConfig config_2_0(config.header);
auto result = memoryAsVector(config.data, &config_2_0.data);
return result.first ? startRecognition(modelHandle, config_2_0) : Return<int32_t>(-ENOMEM);
}
void SoundTriggerHw::SoundModelClient_2_1::recognitionCallback(
struct sound_trigger_recognition_event* halEvent) {
if (halEvent->type == SOUND_MODEL_TYPE_KEYPHRASE) {
V2_0::ISoundTriggerHwCallback::PhraseRecognitionEvent event_2_0;
convertPhaseRecognitionEventFromHal(
&event_2_0, reinterpret_cast<sound_trigger_phrase_recognition_event*>(halEvent));
event_2_0.common.model = mId;
V2_1::ISoundTriggerHwCallback::PhraseRecognitionEvent event;
event.phraseExtras.setToExternal(event_2_0.phraseExtras.data(),
event_2_0.phraseExtras.size());
auto result = moveVectorToMemory(&event_2_0.common.data, &event.common.data);
if (result.first) {
// The data vector is now empty, thus copying is cheap.
event.common.header = event_2_0.common;
mCallback->phraseRecognitionCallback_2_1(event, mCookie);
}
} else {
V2_1::ISoundTriggerHwCallback::RecognitionEvent event;
convertRecognitionEventFromHal(&event.header, halEvent);
event.header.model = mId;
auto result = moveVectorToMemory(&event.header.data, &event.data);
if (result.first) {
mCallback->recognitionCallback_2_1(event, mCookie);
}
}
}
void SoundTriggerHw::SoundModelClient_2_1::soundModelCallback(
struct sound_trigger_model_event* halEvent) {
V2_1::ISoundTriggerHwCallback::ModelEvent event;
convertSoundModelEventFromHal(&event.header, halEvent);
event.header.model = mId;
auto result = moveVectorToMemory(&event.header.data, &event.data);
if (result.first) {
mCallback->soundModelCallback_2_1(event, mCookie);
}
}
ISoundTriggerHw* HIDL_FETCH_ISoundTriggerHw(const char* /* name */) {
return (new SoundTriggerHw())->getInterface();
}
} // namespace implementation
} // namespace V2_1
} // namespace soundtrigger
} // namespace hardware
} // namespace android
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