2 * Copyright (C) 2017 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #define LOG_TAG "BroadcastRadioDefault.tuner"
20 #include "BroadcastRadio.h"
28 namespace broadcastradio {
30 namespace implementation {
32 using namespace std::chrono_literals;
35 using V1_0::BandConfig;
36 using V1_0::Direction;
38 using std::chrono::milliseconds;
39 using std::lock_guard;
46 milliseconds config = 50ms;
47 milliseconds scan = 200ms;
48 milliseconds step = 100ms;
49 milliseconds tune = 150ms;
52 Tuner::Tuner(const sp<V1_0::ITunerCallback>& callback)
53 : mCallback(callback),
54 mCallback1_1(ITunerCallback::castFrom(callback).withDefault(nullptr)),
55 mVirtualFm(make_fm_radio()) {}
57 void Tuner::forceClose() {
58 lock_guard<mutex> lk(mMut);
63 Return<Result> Tuner::setConfiguration(const BandConfig& config) {
64 ALOGV("%s", __func__);
66 if (config.lowerLimit >= config.upperLimit) return Result::INVALID_ARGUMENTS;
68 auto task = [this, config]() {
69 ALOGI("Setting AM/FM config");
70 lock_guard<mutex> lk(mMut);
72 mAmfmConfig = move(config);
73 mAmfmConfig.antennaConnected = true;
74 mCurrentProgram = utils::make_selector(mAmfmConfig.type, mAmfmConfig.lowerLimit);
76 mIsAmfmConfigSet = true;
77 mCallback->configChange(Result::OK, mAmfmConfig);
79 mThread.schedule(task, gDefaultDelay.config);
84 Return<void> Tuner::getConfiguration(getConfiguration_cb _hidl_cb) {
85 ALOGV("%s", __func__);
87 lock_guard<mutex> lk(mMut);
88 if (mIsAmfmConfigSet) {
89 _hidl_cb(Result::OK, mAmfmConfig);
91 _hidl_cb(Result::NOT_INITIALIZED, {});
96 // makes ProgramInfo that points to no program
97 static ProgramInfo makeDummyProgramInfo(const ProgramSelector& selector) {
98 ProgramInfo info11 = {};
99 auto& info10 = info11.base;
101 utils::getLegacyChannel(selector, info10.channel, info10.subChannel);
102 info11.selector = selector;
103 info11.flags |= ProgramInfoFlags::MUTED;
108 bool Tuner::isFmLocked() {
109 if (!utils::isAmFm(utils::getType(mCurrentProgram))) return false;
110 return mAmfmConfig.type == Band::FM_HD || mAmfmConfig.type == Band::FM;
113 void Tuner::tuneInternalLocked(const ProgramSelector& sel) {
114 VirtualRadio* virtualRadio = nullptr;
116 virtualRadio = &mVirtualFm;
119 VirtualProgram virtualProgram;
120 if (virtualRadio != nullptr && virtualRadio->getProgram(sel, virtualProgram)) {
121 mCurrentProgram = virtualProgram.selector;
122 mCurrentProgramInfo = static_cast<ProgramInfo>(virtualProgram);
124 mCurrentProgram = sel;
125 mCurrentProgramInfo = makeDummyProgramInfo(sel);
127 mIsTuneCompleted = true;
129 mCallback->tuneComplete(Result::OK, mCurrentProgramInfo.base);
130 if (mCallback1_1 != nullptr) {
131 mCallback1_1->tuneComplete_1_1(Result::OK, mCurrentProgramInfo);
135 Return<Result> Tuner::scan(Direction direction, bool skipSubChannel __unused) {
136 ALOGV("%s", __func__);
137 lock_guard<mutex> lk(mMut);
138 vector<VirtualProgram> list;
141 list = mVirtualFm.getProgramList();
145 mIsTuneCompleted = false;
146 auto task = [this, direction]() {
147 ALOGI("Performing failed scan %s", toString(direction).c_str());
149 mCallback->tuneComplete(Result::TIMEOUT, {});
150 if (mCallback1_1 != nullptr) {
151 mCallback1_1->tuneComplete_1_1(Result::TIMEOUT, {});
154 mThread.schedule(task, gDefaultDelay.scan);
159 // Not optimal (O(sort) instead of O(n)), but not a big deal here;
160 // also, it's likely that list is already sorted (so O(n) anyway).
161 sort(list.begin(), list.end());
162 auto current = mCurrentProgram;
163 auto found = lower_bound(list.begin(), list.end(), VirtualProgram({current}));
164 if (direction == Direction::UP) {
165 if (found < list.end() - 1) {
166 if (utils::tunesTo(current, found->selector)) found++;
168 found = list.begin();
171 if (found > list.begin() && found != list.end()) {
174 found = list.end() - 1;
177 auto tuneTo = found->selector;
179 mIsTuneCompleted = false;
180 auto task = [this, tuneTo, direction]() {
181 ALOGI("Performing scan %s", toString(direction).c_str());
183 lock_guard<mutex> lk(mMut);
184 tuneInternalLocked(tuneTo);
186 mThread.schedule(task, gDefaultDelay.scan);
191 Return<Result> Tuner::step(Direction direction, bool skipSubChannel) {
192 ALOGV("%s", __func__);
193 ALOGW_IF(!skipSubChannel, "can't step to next frequency without ignoring subChannel");
195 lock_guard<mutex> lk(mMut);
197 if (!utils::isAmFm(utils::getType(mCurrentProgram))) {
198 ALOGE("Can't step in anything else than AM/FM");
199 return Result::NOT_INITIALIZED;
202 ALOGW_IF(!mIsAmfmConfigSet, "AM/FM config not set");
203 if (!mIsAmfmConfigSet) return Result::INVALID_STATE;
204 mIsTuneCompleted = false;
206 auto task = [this, direction]() {
207 ALOGI("Performing step %s", toString(direction).c_str());
209 lock_guard<mutex> lk(mMut);
211 auto current = utils::getId(mCurrentProgram, IdentifierType::AMFM_FREQUENCY, 0);
213 if (direction == Direction::UP) {
214 current += mAmfmConfig.spacings[0];
216 current -= mAmfmConfig.spacings[0];
219 if (current > mAmfmConfig.upperLimit) current = mAmfmConfig.lowerLimit;
220 if (current < mAmfmConfig.lowerLimit) current = mAmfmConfig.upperLimit;
222 tuneInternalLocked(utils::make_selector(mAmfmConfig.type, current));
224 mThread.schedule(task, gDefaultDelay.step);
229 Return<Result> Tuner::tune(uint32_t channel, uint32_t subChannel) {
230 ALOGV("%s(%d, %d)", __func__, channel, subChannel);
233 lock_guard<mutex> lk(mMut);
234 band = mAmfmConfig.type;
236 return tune_1_1(utils::make_selector(band, channel, subChannel));
239 Return<Result> Tuner::tune_1_1(const ProgramSelector& sel) {
240 ALOGV("%s(%s)", __func__, toString(sel).c_str());
242 lock_guard<mutex> lk(mMut);
244 if (utils::isAmFm(utils::getType(mCurrentProgram))) {
245 ALOGW_IF(!mIsAmfmConfigSet, "AM/FM config not set");
246 if (!mIsAmfmConfigSet) return Result::INVALID_STATE;
248 auto freq = utils::getId(sel, IdentifierType::AMFM_FREQUENCY);
249 if (freq < mAmfmConfig.lowerLimit || freq > mAmfmConfig.upperLimit) {
250 return Result::INVALID_ARGUMENTS;
254 mIsTuneCompleted = false;
255 auto task = [this, sel]() {
256 lock_guard<mutex> lk(mMut);
257 tuneInternalLocked(sel);
259 mThread.schedule(task, gDefaultDelay.tune);
264 Return<Result> Tuner::cancel() {
265 ALOGV("%s", __func__);
270 Return<void> Tuner::getProgramInformation(getProgramInformation_cb _hidl_cb) {
271 ALOGV("%s", __func__);
272 return getProgramInformation_1_1([&](Result result, const ProgramInfo& info) {
273 _hidl_cb(result, info.base);
277 Return<void> Tuner::getProgramInformation_1_1(getProgramInformation_1_1_cb _hidl_cb) {
278 ALOGV("%s", __func__);
280 lock_guard<mutex> lk(mMut);
281 if (mIsTuneCompleted) {
282 _hidl_cb(Result::OK, mCurrentProgramInfo);
284 _hidl_cb(Result::NOT_INITIALIZED, makeDummyProgramInfo(mCurrentProgram));
289 Return<ProgramListResult> Tuner::startBackgroundScan() {
290 ALOGV("%s", __func__);
291 return ProgramListResult::UNAVAILABLE;
294 Return<void> Tuner::getProgramList(const hidl_string& filter __unused, getProgramList_cb _hidl_cb) {
295 ALOGV("%s", __func__);
296 lock_guard<mutex> lk(mMut);
298 auto& virtualRadio = mVirtualFm;
300 ALOGI("bands other than FM are not supported yet");
301 _hidl_cb(ProgramListResult::OK, {});
305 auto list = virtualRadio.getProgramList();
306 ALOGD("returning a list of %zu programs", list.size());
307 _hidl_cb(ProgramListResult::OK, vector<ProgramInfo>(list.begin(), list.end()));
311 Return<void> Tuner::isAnalogForced(isAnalogForced_cb _hidl_cb) {
312 ALOGV("%s", __func__);
313 // TODO(b/36864090): implement
314 _hidl_cb(Result::INVALID_STATE, false);
318 Return<Result> Tuner::setAnalogForced(bool isForced __unused) {
319 ALOGV("%s", __func__);
320 // TODO(b/36864090): implement
321 return Result::INVALID_STATE;
324 } // namespace implementation
326 } // namespace broadcastradio
327 } // namespace hardware
328 } // namespace android