16655174826330afe66ef766258181ae8c11f3f6cInsun Kang /* 26655174826330afe66ef766258181ae8c11f3f6cInsun Kang * Copyright (C) 2012 The Android Open Source Project 36655174826330afe66ef766258181ae8c11f3f6cInsun Kang * 46655174826330afe66ef766258181ae8c11f3f6cInsun Kang * Licensed under the Apache License, Version 2.0 (the "License"); 56655174826330afe66ef766258181ae8c11f3f6cInsun Kang * you may not use this file except in compliance with the License. 66655174826330afe66ef766258181ae8c11f3f6cInsun Kang * You may obtain a copy of the License at 76655174826330afe66ef766258181ae8c11f3f6cInsun Kang * 86655174826330afe66ef766258181ae8c11f3f6cInsun Kang * http://www.apache.org/licenses/LICENSE-2.0 96655174826330afe66ef766258181ae8c11f3f6cInsun Kang * 106655174826330afe66ef766258181ae8c11f3f6cInsun Kang * Unless required by applicable law or agreed to in writing, software 116655174826330afe66ef766258181ae8c11f3f6cInsun Kang * distributed under the License is distributed on an "AS IS" BASIS, 126655174826330afe66ef766258181ae8c11f3f6cInsun Kang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 136655174826330afe66ef766258181ae8c11f3f6cInsun Kang * See the License for the specific language governing permissions and 146655174826330afe66ef766258181ae8c11f3f6cInsun Kang * limitations under the License. 156655174826330afe66ef766258181ae8c11f3f6cInsun Kang */ 166655174826330afe66ef766258181ae8c11f3f6cInsun Kang 176655174826330afe66ef766258181ae8c11f3f6cInsun Kang//#define LOG_NDEBUG 0 1825eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang#define LOG_TAG "TimedText3GPPSource" 196655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <utils/Log.h> 206655174826330afe66ef766258181ae8c11f3f6cInsun Kang 216655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <binder/Parcel.h> 22f1d5aa162c02a16b7195a43a9bcea4d592600ac4James Dong#include <media/stagefright/foundation/ADebug.h> // CHECK_XX macro 236655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/MediaBuffer.h> 246655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/MediaDefs.h> // for MEDIA_MIMETYPE_xxx 256655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/MediaErrors.h> 266655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/MediaSource.h> 276655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include <media/stagefright/MetaData.h> 286655174826330afe66ef766258181ae8c11f3f6cInsun Kang 2925eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang#include "TimedText3GPPSource.h" 306655174826330afe66ef766258181ae8c11f3f6cInsun Kang#include "TextDescriptions.h" 316655174826330afe66ef766258181ae8c11f3f6cInsun Kang 326655174826330afe66ef766258181ae8c11f3f6cInsun Kangnamespace android { 336655174826330afe66ef766258181ae8c11f3f6cInsun Kang 3425eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun KangTimedText3GPPSource::TimedText3GPPSource(const sp<MediaSource>& mediaSource) 356655174826330afe66ef766258181ae8c11f3f6cInsun Kang : mSource(mediaSource) { 366655174826330afe66ef766258181ae8c11f3f6cInsun Kang} 376655174826330afe66ef766258181ae8c11f3f6cInsun Kang 3825eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun KangTimedText3GPPSource::~TimedText3GPPSource() { 396655174826330afe66ef766258181ae8c11f3f6cInsun Kang} 406655174826330afe66ef766258181ae8c11f3f6cInsun Kang 4125eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kangstatus_t TimedText3GPPSource::read( 42bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang int64_t *startTimeUs, int64_t *endTimeUs, Parcel *parcel, 43bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang const MediaSource::ReadOptions *options) { 446655174826330afe66ef766258181ae8c11f3f6cInsun Kang MediaBuffer *textBuffer = NULL; 456655174826330afe66ef766258181ae8c11f3f6cInsun Kang status_t err = mSource->read(&textBuffer, options); 466655174826330afe66ef766258181ae8c11f3f6cInsun Kang if (err != OK) { 476655174826330afe66ef766258181ae8c11f3f6cInsun Kang return err; 486655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 496655174826330afe66ef766258181ae8c11f3f6cInsun Kang CHECK(textBuffer != NULL); 50bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang textBuffer->meta_data()->findInt64(kKeyTime, startTimeUs); 51bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang CHECK_GE(*startTimeUs, 0); 52bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang extractAndAppendLocalDescriptions(*startTimeUs, textBuffer, parcel); 536655174826330afe66ef766258181ae8c11f3f6cInsun Kang textBuffer->release(); 54bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang // endTimeUs is a dummy parameter for 3gpp timed text format. 55bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang // Set a negative value to it to mark it is unavailable. 56bae00e73c6d1d87cc5fd42b50f95d1d9572162eaInsun Kang *endTimeUs = -1; 576655174826330afe66ef766258181ae8c11f3f6cInsun Kang return OK; 586655174826330afe66ef766258181ae8c11f3f6cInsun Kang} 596655174826330afe66ef766258181ae8c11f3f6cInsun Kang 606655174826330afe66ef766258181ae8c11f3f6cInsun Kang// Each text sample consists of a string of text, optionally with sample 616655174826330afe66ef766258181ae8c11f3f6cInsun Kang// modifier description. The modifier description could specify a new 626655174826330afe66ef766258181ae8c11f3f6cInsun Kang// text style for the string of text. These descriptions are present only 636655174826330afe66ef766258181ae8c11f3f6cInsun Kang// if they are needed. This method is used to extract the modifier 646655174826330afe66ef766258181ae8c11f3f6cInsun Kang// description and append it at the end of the text. 6525eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kangstatus_t TimedText3GPPSource::extractAndAppendLocalDescriptions( 666655174826330afe66ef766258181ae8c11f3f6cInsun Kang int64_t timeUs, const MediaBuffer *textBuffer, Parcel *parcel) { 676655174826330afe66ef766258181ae8c11f3f6cInsun Kang const void *data; 686655174826330afe66ef766258181ae8c11f3f6cInsun Kang size_t size = 0; 696655174826330afe66ef766258181ae8c11f3f6cInsun Kang int32_t flag = TextDescriptions::LOCAL_DESCRIPTIONS; 706655174826330afe66ef766258181ae8c11f3f6cInsun Kang 716655174826330afe66ef766258181ae8c11f3f6cInsun Kang const char *mime; 726655174826330afe66ef766258181ae8c11f3f6cInsun Kang CHECK(mSource->getFormat()->findCString(kKeyMIMEType, &mime)); 7325eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang CHECK(strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP) == 0); 746655174826330afe66ef766258181ae8c11f3f6cInsun Kang 7525eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang data = textBuffer->data(); 7625eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang size = textBuffer->size(); 7725eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang 7825eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang if (size > 0) { 7925eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang parcel->freeData(); 8025eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang flag |= TextDescriptions::IN_BAND_TEXT_3GPP; 8125eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang return TextDescriptions::getParcelOfDescriptions( 8225eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang (const uint8_t *)data, size, flag, timeUs / 1000, parcel); 836655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 8425eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang return OK; 856655174826330afe66ef766258181ae8c11f3f6cInsun Kang} 866655174826330afe66ef766258181ae8c11f3f6cInsun Kang 876655174826330afe66ef766258181ae8c11f3f6cInsun Kang// To extract and send the global text descriptions for all the text samples 886655174826330afe66ef766258181ae8c11f3f6cInsun Kang// in the text track or text file. 896655174826330afe66ef766258181ae8c11f3f6cInsun Kang// TODO: send error message to application via notifyListener()...? 9025eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kangstatus_t TimedText3GPPSource::extractGlobalDescriptions(Parcel *parcel) { 916655174826330afe66ef766258181ae8c11f3f6cInsun Kang const void *data; 926655174826330afe66ef766258181ae8c11f3f6cInsun Kang size_t size = 0; 936655174826330afe66ef766258181ae8c11f3f6cInsun Kang int32_t flag = TextDescriptions::GLOBAL_DESCRIPTIONS; 946655174826330afe66ef766258181ae8c11f3f6cInsun Kang 956655174826330afe66ef766258181ae8c11f3f6cInsun Kang const char *mime; 966655174826330afe66ef766258181ae8c11f3f6cInsun Kang CHECK(mSource->getFormat()->findCString(kKeyMIMEType, &mime)); 9725eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang CHECK(strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP) == 0); 9825eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang 9925eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang uint32_t type; 10025eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang // get the 'tx3g' box content. This box contains the text descriptions 10125eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang // used to render the text track 10225eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang if (!mSource->getFormat()->findData( 10325eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang kKeyTextFormatData, &type, &data, &size)) { 10425eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang return ERROR_MALFORMED; 10525eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang } 1066655174826330afe66ef766258181ae8c11f3f6cInsun Kang 10725eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang if (size > 0) { 10825eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang flag |= TextDescriptions::IN_BAND_TEXT_3GPP; 10925eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang return TextDescriptions::getParcelOfDescriptions( 11025eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang (const uint8_t *)data, size, flag, 0, parcel); 1116655174826330afe66ef766258181ae8c11f3f6cInsun Kang } 11225eefbedf4b0ba6aea38605f4ba19c75a40810d1Insun Kang return OK; 1136655174826330afe66ef766258181ae8c11f3f6cInsun Kang} 1146655174826330afe66ef766258181ae8c11f3f6cInsun Kang 115f9d660a5e0196240add5daf0199f128d471e592cInsun Kangsp<MetaData> TimedText3GPPSource::getFormat() { 116f9d660a5e0196240add5daf0199f128d471e592cInsun Kang return mSource->getFormat(); 117f9d660a5e0196240add5daf0199f128d471e592cInsun Kang} 118f9d660a5e0196240add5daf0199f128d471e592cInsun Kang 1196655174826330afe66ef766258181ae8c11f3f6cInsun Kang} // namespace android 120