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platform_hardware_interfaces/broadcastradio/1.1/default/Tuner.cpp
Tomasz Wasilczyk 5e6bebbd83 Update program list when switching bands. 
Test: manual
Bug: 74353024
Change-Id: I893cd4f9c7d14951924759792206af798b0ceefc
2018-03-28 17:48:18 -07:00

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/*
* 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.
*/
#define LOG_TAG "BroadcastRadioDefault.tuner"
#define LOG_NDEBUG 0
#include "Tuner.h"
#include "BroadcastRadio.h"
#include <broadcastradio-utils-1x/Utils.h>
#include <log/log.h>
namespace android {
namespace hardware {
namespace broadcastradio {
namespace V1_1 {
namespace implementation {
using namespace std::chrono_literals;
using V1_0::Band;
using V1_0::BandConfig;
using V1_0::Class;
using V1_0::Direction;
using V1_1::IdentifierType;
using V1_1::ProgramInfo;
using V1_1::ProgramInfoFlags;
using V1_1::ProgramListResult;
using V1_1::ProgramSelector;
using V1_1::ProgramType;
using V1_1::VendorKeyValue;
using utils::HalRevision;
using std::chrono::milliseconds;
using std::lock_guard;
using std::move;
using std::mutex;
using std::sort;
using std::vector;
const struct {
milliseconds config = 50ms;
milliseconds scan = 200ms;
milliseconds step = 100ms;
milliseconds tune = 150ms;
} gDefaultDelay;
Tuner::Tuner(const sp<BroadcastRadio> module, V1_0::Class classId,
const sp<V1_0::ITunerCallback>& callback)
: mModule(module),
mClassId(classId),
mCallback(callback),
mCallback1_1(V1_1::ITunerCallback::castFrom(callback).withDefault(nullptr)),
mVirtualRadio(getRadio(classId)),
mIsAnalogForced(false) {}
void Tuner::forceClose() {
lock_guard<mutex> lk(mMut);
mIsClosed = true;
mThread.cancelAll();
}
void Tuner::setConfigurationInternalLocked(const BandConfig& config) {
mAmfmConfig = config;
mAmfmConfig.antennaConnected = true;
mCurrentProgram = utils::make_selector(mAmfmConfig.type, mAmfmConfig.lowerLimit);
if (utils::isFm(mAmfmConfig.type)) {
mVirtualRadio = std::ref(getFmRadio());
} else {
mVirtualRadio = std::ref(getAmRadio());
}
mIsAmfmConfigSet = true;
mCallback->configChange(Result::OK, mAmfmConfig);
if (mCallback1_1 != nullptr) mCallback1_1->programListChanged();
}
bool Tuner::autoConfigureLocked(uint64_t frequency) {
for (auto&& config : mModule->getAmFmBands()) {
// The check here is rather poor, but it's enough for default implementation.
if (config.lowerLimit <= frequency && config.upperLimit >= frequency) {
ALOGI("Auto-switching band to %s", toString(config).c_str());
setConfigurationInternalLocked(config);
return true;
}
}
return false;
}
Return<Result> Tuner::setConfiguration(const BandConfig& config) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
if (mClassId != Class::AM_FM) {
ALOGE("Can't set AM/FM configuration on SAT/DT radio tuner");
return Result::INVALID_STATE;
}
if (config.lowerLimit >= config.upperLimit) return Result::INVALID_ARGUMENTS;
auto task = [this, config]() {
ALOGI("Setting AM/FM config");
lock_guard<mutex> lk(mMut);
setConfigurationInternalLocked(config);
};
mThread.schedule(task, gDefaultDelay.config);
return Result::OK;
}
Return<void> Tuner::getConfiguration(getConfiguration_cb _hidl_cb) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (!mIsClosed && mIsAmfmConfigSet) {
_hidl_cb(Result::OK, mAmfmConfig);
} else {
_hidl_cb(Result::NOT_INITIALIZED, {});
}
return {};
}
// makes ProgramInfo that points to no program
static ProgramInfo makeDummyProgramInfo(const ProgramSelector& selector) {
ProgramInfo info11 = {};
auto& info10 = info11.base;
utils::getLegacyChannel(selector, &info10.channel, &info10.subChannel);
info11.selector = selector;
info11.flags |= ProgramInfoFlags::MUTED;
return info11;
}
HalRevision Tuner::getHalRev() const {
if (mCallback1_1 != nullptr) {
return HalRevision::V1_1;
} else {
return HalRevision::V1_0;
}
}
void Tuner::tuneInternalLocked(const ProgramSelector& sel) {
VirtualProgram virtualProgram;
if (mVirtualRadio.get().getProgram(sel, virtualProgram)) {
mCurrentProgram = virtualProgram.selector;
mCurrentProgramInfo = virtualProgram.getProgramInfo(getHalRev());
} else {
mCurrentProgram = sel;
mCurrentProgramInfo = makeDummyProgramInfo(sel);
}
mIsTuneCompleted = true;
if (mCallback1_1 == nullptr) {
mCallback->tuneComplete(Result::OK, mCurrentProgramInfo.base);
} else {
mCallback1_1->tuneComplete_1_1(Result::OK, mCurrentProgramInfo.selector);
mCallback1_1->currentProgramInfoChanged(mCurrentProgramInfo);
}
}
Return<Result> Tuner::scan(Direction direction, bool skipSubChannel __unused) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
auto list = mVirtualRadio.get().getProgramList();
if (list.empty()) {
mIsTuneCompleted = false;
auto task = [this, direction]() {
ALOGI("Performing failed scan %s", toString(direction).c_str());
if (mCallback1_1 == nullptr) {
mCallback->tuneComplete(Result::TIMEOUT, {});
} else {
mCallback1_1->tuneComplete_1_1(Result::TIMEOUT, {});
}
};
mThread.schedule(task, gDefaultDelay.scan);
return Result::OK;
}
// Not optimal (O(sort) instead of O(n)), but not a big deal here;
// also, it's likely that list is already sorted (so O(n) anyway).
sort(list.begin(), list.end());
auto current = mCurrentProgram;
auto found = lower_bound(list.begin(), list.end(), VirtualProgram({current}));
if (direction == Direction::UP) {
if (found < list.end() - 1) {
if (utils::tunesTo(current, found->selector)) found++;
} else {
found = list.begin();
}
} else {
if (found > list.begin() && found != list.end()) {
found--;
} else {
found = list.end() - 1;
}
}
auto tuneTo = found->selector;
mIsTuneCompleted = false;
auto task = [this, tuneTo, direction]() {
ALOGI("Performing scan %s", toString(direction).c_str());
lock_guard<mutex> lk(mMut);
tuneInternalLocked(tuneTo);
};
mThread.schedule(task, gDefaultDelay.scan);
return Result::OK;
}
Return<Result> Tuner::step(Direction direction, bool skipSubChannel) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
ALOGW_IF(!skipSubChannel, "can't step to next frequency without ignoring subChannel");
if (!utils::isAmFm(utils::getType(mCurrentProgram))) {
ALOGE("Can't step in anything else than AM/FM");
return Result::NOT_INITIALIZED;
}
if (!mIsAmfmConfigSet) {
ALOGW("AM/FM config not set");
return Result::INVALID_STATE;
}
mIsTuneCompleted = false;
auto task = [this, direction]() {
ALOGI("Performing step %s", toString(direction).c_str());
lock_guard<mutex> lk(mMut);
auto current = utils::getId(mCurrentProgram, IdentifierType::AMFM_FREQUENCY, 0);
if (direction == Direction::UP) {
current += mAmfmConfig.spacings[0];
} else {
current -= mAmfmConfig.spacings[0];
}
if (current > mAmfmConfig.upperLimit) current = mAmfmConfig.lowerLimit;
if (current < mAmfmConfig.lowerLimit) current = mAmfmConfig.upperLimit;
tuneInternalLocked(utils::make_selector(mAmfmConfig.type, current));
};
mThread.schedule(task, gDefaultDelay.step);
return Result::OK;
}
Return<Result> Tuner::tune(uint32_t channel, uint32_t subChannel) {
ALOGV("%s(%d, %d)", __func__, channel, subChannel);
Band band;
{
lock_guard<mutex> lk(mMut);
band = mAmfmConfig.type;
}
return tuneByProgramSelector(utils::make_selector(band, channel, subChannel));
}
Return<Result> Tuner::tuneByProgramSelector(const ProgramSelector& sel) {
ALOGV("%s(%s)", __func__, toString(sel).c_str());
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
// checking if ProgramSelector is valid
auto programType = utils::getType(sel);
if (utils::isAmFm(programType)) {
if (!mIsAmfmConfigSet) {
ALOGW("AM/FM config not set");
return Result::INVALID_STATE;
}
auto freq = utils::getId(sel, IdentifierType::AMFM_FREQUENCY);
if (freq < mAmfmConfig.lowerLimit || freq > mAmfmConfig.upperLimit) {
if (!autoConfigureLocked(freq)) return Result::INVALID_ARGUMENTS;
}
} else if (programType == ProgramType::DAB) {
if (!utils::hasId(sel, IdentifierType::DAB_SIDECC)) return Result::INVALID_ARGUMENTS;
} else if (programType == ProgramType::DRMO) {
if (!utils::hasId(sel, IdentifierType::DRMO_SERVICE_ID)) return Result::INVALID_ARGUMENTS;
} else if (programType == ProgramType::SXM) {
if (!utils::hasId(sel, IdentifierType::SXM_SERVICE_ID)) return Result::INVALID_ARGUMENTS;
} else {
return Result::INVALID_ARGUMENTS;
}
mIsTuneCompleted = false;
auto task = [this, sel]() {
lock_guard<mutex> lk(mMut);
tuneInternalLocked(sel);
};
mThread.schedule(task, gDefaultDelay.tune);
return Result::OK;
}
Return<Result> Tuner::cancel() {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
mThread.cancelAll();
return Result::OK;
}
Return<Result> Tuner::cancelAnnouncement() {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
return Result::OK;
}
Return<void> Tuner::getProgramInformation(getProgramInformation_cb _hidl_cb) {
ALOGV("%s", __func__);
return getProgramInformation_1_1(
[&](Result result, const ProgramInfo& info) { _hidl_cb(result, info.base); });
}
Return<void> Tuner::getProgramInformation_1_1(getProgramInformation_1_1_cb _hidl_cb) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) {
_hidl_cb(Result::NOT_INITIALIZED, {});
} else if (mIsTuneCompleted) {
_hidl_cb(Result::OK, mCurrentProgramInfo);
} else {
_hidl_cb(Result::NOT_INITIALIZED, makeDummyProgramInfo(mCurrentProgram));
}
return {};
}
Return<ProgramListResult> Tuner::startBackgroundScan() {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return ProgramListResult::NOT_INITIALIZED;
if (mCallback1_1 != nullptr) {
mCallback1_1->backgroundScanComplete(ProgramListResult::OK);
}
return ProgramListResult::OK;
}
Return<void> Tuner::getProgramList(const hidl_vec<VendorKeyValue>& vendorFilter,
getProgramList_cb _hidl_cb) {
ALOGV("%s(%s)", __func__, toString(vendorFilter).substr(0, 100).c_str());
lock_guard<mutex> lk(mMut);
if (mIsClosed) {
_hidl_cb(ProgramListResult::NOT_INITIALIZED, {});
return {};
}
auto list = mVirtualRadio.get().getProgramList();
ALOGD("returning a list of %zu programs", list.size());
_hidl_cb(ProgramListResult::OK, getProgramInfoVector(list, getHalRev()));
return {};
}
Return<Result> Tuner::setAnalogForced(bool isForced) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) return Result::NOT_INITIALIZED;
mIsAnalogForced = isForced;
return Result::OK;
}
Return<void> Tuner::isAnalogForced(isAnalogForced_cb _hidl_cb) {
ALOGV("%s", __func__);
lock_guard<mutex> lk(mMut);
if (mIsClosed) {
_hidl_cb(Result::NOT_INITIALIZED, false);
} else {
_hidl_cb(Result::OK, mIsAnalogForced);
}
return {};
}
} // namespace implementation
} // namespace V1_1
} // namespace broadcastradio
} // namespace hardware
} // namespace android
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