TimedTextPlayer.cpp revision 3254b25e8b0f674ccc2226609e01dd86a600802e
17a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang /* 26655174826330afe66ef766258181ae8c11f3f6cInsun Kang * Copyright (C) 2012 The Android Open Source Project 37a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * 47a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * Licensed under the Apache License, Version 2.0 (the "License"); 57a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * you may not use this file except in compliance with the License. 67a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * You may obtain a copy of the License at 77a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * 87a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * http://www.apache.org/licenses/LICENSE-2.0 97a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * 107a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * Unless required by applicable law or agreed to in writing, software 117a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * distributed under the License is distributed on an "AS IS" BASIS, 127a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * See the License for the specific language governing permissions and 147a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang * limitations under the License. 157a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang */ 167a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 177a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang//#define LOG_NDEBUG 0 187a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang#define LOG_TAG "TimedTextPlayer" 197a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang#include <utils/Log.h> 207a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 21f1d5aa162c02a16b7195a43a9bcea4d592600ac4James Dong#include <media/stagefright/foundation/ADebug.h> 226655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/foundation/AMessage.h> 233254b25e8b0f674ccc2226609e01dd86a600802eInsun Kang#include <media/stagefright/timedtext/TimedTextDriver.h> 247a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang#include <media/stagefright/MediaErrors.h> 256655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/MediaPlayerInterface.h> 263b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang 27965d08ba16ee82bc85f69546360c18e7da907406Gloria Wang#include "TimedTextPlayer.h" 287a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 296655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include "TimedTextSource.h" 307a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 316655174826330afe66ef766258181ae8c11f3f6cInsun Kangnamespace android { 327a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 336655174826330afe66ef766258181ae8c11f3f6cInsun Kangstatic const int64_t kAdjustmentProcessingTimeUs = 100000ll; 347a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 356655174826330afe66ef766258181ae8c11f3f6cInsun KangTimedTextPlayer::TimedTextPlayer(const wp<MediaPlayerBase> &listener) 366655174826330afe66ef766258181ae8c11f3f6cInsun Kang : mListener(listener), 376655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource(NULL), 386655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSendSubtitleGeneration(0) { 397a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 407a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 417a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria WangTimedTextPlayer::~TimedTextPlayer() { 426655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (mSource != NULL) { 436655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource->stop(); 446655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource.clear(); 456655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource = NULL; 467a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang } 477a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 487a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 496655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::start() { 506655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<AMessage> msg = new AMessage(kWhatSeek, id()); 516655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->setInt64("seekTimeUs", -1); 526655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->post(); 537a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 547a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 557a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wangvoid TimedTextPlayer::pause() { 566655174826330afe66ef766258181ae8c11f3f6cInsun Kang (new AMessage(kWhatPause, id()))->post(); 577a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 587a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 597a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wangvoid TimedTextPlayer::resume() { 606655174826330afe66ef766258181ae8c11f3f6cInsun Kang start(); 617a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 627a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 636655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::seekToAsync(int64_t timeUs) { 646655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<AMessage> msg = new AMessage(kWhatSeek, id()); 656655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->setInt64("seekTimeUs", timeUs); 666655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->post(); 677a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 687a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 696655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::setDataSource(sp<TimedTextSource> source) { 706655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<AMessage> msg = new AMessage(kWhatSetSource, id()); 716655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->setObject("source", source); 726655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->post(); 737a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 747a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 756655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::onMessageReceived(const sp<AMessage> &msg) { 766655174826330afe66ef766258181ae8c11f3f6cInsun Kang switch (msg->what()) { 776655174826330afe66ef766258181ae8c11f3f6cInsun Kang case kWhatPause: { 786655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSendSubtitleGeneration++; 796655174826330afe66ef766258181ae8c11f3f6cInsun Kang break; 80965d08ba16ee82bc85f69546360c18e7da907406Gloria Wang } 816655174826330afe66ef766258181ae8c11f3f6cInsun Kang case kWhatSeek: { 826655174826330afe66ef766258181ae8c11f3f6cInsun Kang int64_t seekTimeUs = 0; 836655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->findInt64("seekTimeUs", &seekTimeUs); 846655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (seekTimeUs < 0) { 856655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<MediaPlayerBase> listener = mListener.promote(); 866655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (listener != NULL) { 876655174826330afe66ef766258181ae8c11f3f6cInsun Kang int32_t positionMs = 0; 886655174826330afe66ef766258181ae8c11f3f6cInsun Kang listener->getCurrentPosition(&positionMs); 896655174826330afe66ef766258181ae8c11f3f6cInsun Kang seekTimeUs = positionMs * 1000ll; 906655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 916655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 926655174826330afe66ef766258181ae8c11f3f6cInsun Kang doSeekAndRead(seekTimeUs); 936655174826330afe66ef766258181ae8c11f3f6cInsun Kang break; 946655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 956655174826330afe66ef766258181ae8c11f3f6cInsun Kang case kWhatSendSubtitle: { 966655174826330afe66ef766258181ae8c11f3f6cInsun Kang int32_t generation; 976655174826330afe66ef766258181ae8c11f3f6cInsun Kang CHECK(msg->findInt32("generation", &generation)); 986655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (generation != mSendSubtitleGeneration) { 996655174826330afe66ef766258181ae8c11f3f6cInsun Kang // Drop obsolete msg. 1006655174826330afe66ef766258181ae8c11f3f6cInsun Kang break; 1016655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 1026655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<RefBase> obj; 1036655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->findObject("subtitle", &obj); 1046655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (obj != NULL) { 1056655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<ParcelEvent> parcelEvent; 1066655174826330afe66ef766258181ae8c11f3f6cInsun Kang parcelEvent = static_cast<ParcelEvent*>(obj.get()); 1076655174826330afe66ef766258181ae8c11f3f6cInsun Kang notifyListener(MEDIA_TIMED_TEXT, &(parcelEvent->parcel)); 1086655174826330afe66ef766258181ae8c11f3f6cInsun Kang } else { 1096655174826330afe66ef766258181ae8c11f3f6cInsun Kang notifyListener(MEDIA_TIMED_TEXT); 1106655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 1116655174826330afe66ef766258181ae8c11f3f6cInsun Kang doRead(); 1126655174826330afe66ef766258181ae8c11f3f6cInsun Kang break; 1136655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 1146655174826330afe66ef766258181ae8c11f3f6cInsun Kang case kWhatSetSource: { 1156655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<RefBase> obj; 1166655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->findObject("source", &obj); 1176655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (obj == NULL) break; 1186655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (mSource != NULL) { 1196655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource->stop(); 1206655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 1216655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource = static_cast<TimedTextSource*>(obj.get()); 1226655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource->start(); 1236655174826330afe66ef766258181ae8c11f3f6cInsun Kang Parcel parcel; 1246655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (mSource->extractGlobalDescriptions(&parcel) == OK && 1256655174826330afe66ef766258181ae8c11f3f6cInsun Kang parcel.dataSize() > 0) { 1266655174826330afe66ef766258181ae8c11f3f6cInsun Kang notifyListener(MEDIA_TIMED_TEXT, &parcel); 1276655174826330afe66ef766258181ae8c11f3f6cInsun Kang } else { 1286655174826330afe66ef766258181ae8c11f3f6cInsun Kang notifyListener(MEDIA_TIMED_TEXT); 1296655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 1306655174826330afe66ef766258181ae8c11f3f6cInsun Kang break; 1313b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang } 1327a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang } 1337a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 1347a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 1356655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::doSeekAndRead(int64_t seekTimeUs) { 1366655174826330afe66ef766258181ae8c11f3f6cInsun Kang MediaSource::ReadOptions options; 1376655174826330afe66ef766258181ae8c11f3f6cInsun Kang options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC); 1386655174826330afe66ef766258181ae8c11f3f6cInsun Kang doRead(&options); 1397a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 1407a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 1416655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::doRead(MediaSource::ReadOptions* options) { 1426655174826330afe66ef766258181ae8c11f3f6cInsun Kang int64_t timeUs = 0; 1436655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<ParcelEvent> parcelEvent = new ParcelEvent(); 1446655174826330afe66ef766258181ae8c11f3f6cInsun Kang mSource->read(&timeUs, &(parcelEvent->parcel), options); 1456655174826330afe66ef766258181ae8c11f3f6cInsun Kang postTextEvent(parcelEvent, timeUs); 1467a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 1477a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang 1486655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::postTextEvent(const sp<ParcelEvent>& parcel, int64_t timeUs) { 1496655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<MediaPlayerBase> listener = mListener.promote(); 1506655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (listener != NULL) { 1516655174826330afe66ef766258181ae8c11f3f6cInsun Kang int64_t positionUs, delayUs; 1526655174826330afe66ef766258181ae8c11f3f6cInsun Kang int32_t positionMs = 0; 1536655174826330afe66ef766258181ae8c11f3f6cInsun Kang listener->getCurrentPosition(&positionMs); 1546655174826330afe66ef766258181ae8c11f3f6cInsun Kang positionUs = positionMs * 1000; 155965d08ba16ee82bc85f69546360c18e7da907406Gloria Wang 1566655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (timeUs <= positionUs + kAdjustmentProcessingTimeUs) { 1576655174826330afe66ef766258181ae8c11f3f6cInsun Kang delayUs = 0; 158965d08ba16ee82bc85f69546360c18e7da907406Gloria Wang } else { 1596655174826330afe66ef766258181ae8c11f3f6cInsun Kang delayUs = timeUs - positionUs - kAdjustmentProcessingTimeUs; 160965d08ba16ee82bc85f69546360c18e7da907406Gloria Wang } 1616655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<AMessage> msg = new AMessage(kWhatSendSubtitle, id()); 1626655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->setInt32("generation", mSendSubtitleGeneration); 1636655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (parcel != NULL) { 1646655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->setObject("subtitle", parcel); 1657a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang } 1666655174826330afe66ef766258181ae8c11f3f6cInsun Kang msg->post(delayUs); 1677a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang } 1687a1e3e81264189e23a1db2b174e1b5a5d4c7d1c3Gloria Wang} 1693b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang 1706655174826330afe66ef766258181ae8c11f3f6cInsun Kangvoid TimedTextPlayer::notifyListener(int msg, const Parcel *parcel) { 1716655174826330afe66ef766258181ae8c11f3f6cInsun Kang sp<MediaPlayerBase> listener = mListener.promote(); 1726655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (listener != NULL) { 1736655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (parcel != NULL && (parcel->dataSize() > 0)) { 1746655174826330afe66ef766258181ae8c11f3f6cInsun Kang listener->sendEvent(msg, 0, 0, parcel); 1756655174826330afe66ef766258181ae8c11f3f6cInsun Kang } else { // send an empty timed text to clear the screen 1766655174826330afe66ef766258181ae8c11f3f6cInsun Kang listener->sendEvent(msg); 1773b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang } 1783b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang } 1793b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang} 1803b573f7bf1c5736d500e39013b8d32478a1429e6Gloria Wang 1816655174826330afe66ef766258181ae8c11f3f6cInsun Kang} // namespace android 182