StreamingSource.cpp revision 06528d7f18ad01377357d337eaa3e875a242bd2d
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17//#define LOG_NDEBUG 0 18#define LOG_TAG "StreamingSource" 19#include <utils/Log.h> 20 21#include "StreamingSource.h" 22 23#include "ATSParser.h" 24#include "AnotherPacketSource.h" 25#include "NuPlayerStreamListener.h" 26 27#include <media/stagefright/foundation/ABuffer.h> 28#include <media/stagefright/foundation/ADebug.h> 29#include <media/stagefright/foundation/AMessage.h> 30#include <media/stagefright/MediaSource.h> 31#include <media/stagefright/MetaData.h> 32 33namespace android { 34 35NuPlayer::StreamingSource::StreamingSource(const sp<IStreamSource> &source) 36 : mSource(source), 37 mEOS(false) { 38} 39 40NuPlayer::StreamingSource::~StreamingSource() { 41} 42 43void NuPlayer::StreamingSource::start() { 44 mStreamListener = new NuPlayerStreamListener(mSource, 0); 45 mTSParser = new ATSParser(ATSParser::TS_TIMESTAMPS_ARE_ABSOLUTE); 46 47 mStreamListener->start(); 48} 49 50bool NuPlayer::StreamingSource::feedMoreTSData() { 51 if (mEOS) { 52 return false; 53 } 54 55 for (int32_t i = 0; i < 10; ++i) { 56 char buffer[188]; 57 sp<AMessage> extra; 58 ssize_t n = mStreamListener->read(buffer, sizeof(buffer), &extra); 59 60 if (n == 0) { 61 LOGI("input data EOS reached."); 62 mTSParser->signalEOS(ERROR_END_OF_STREAM); 63 mEOS = true; 64 break; 65 } else if (n == INFO_DISCONTINUITY) { 66 ATSParser::DiscontinuityType type = ATSParser::DISCONTINUITY_SEEK; 67 68 int32_t formatChange; 69 if (extra != NULL 70 && extra->findInt32( 71 IStreamListener::kKeyFormatChange, &formatChange) 72 && formatChange != 0) { 73 type = ATSParser::DISCONTINUITY_FORMATCHANGE; 74 } 75 76 mTSParser->signalDiscontinuity(type, extra); 77 } else if (n < 0) { 78 CHECK_EQ(n, -EWOULDBLOCK); 79 break; 80 } else { 81 if (buffer[0] == 0x00) { 82 // XXX legacy 83 mTSParser->signalDiscontinuity( 84 buffer[1] == 0x00 85 ? ATSParser::DISCONTINUITY_SEEK 86 : ATSParser::DISCONTINUITY_FORMATCHANGE, 87 extra); 88 } else { 89 status_t err = mTSParser->feedTSPacket(buffer, sizeof(buffer)); 90 91 if (err != OK) { 92 LOGE("TS Parser returned error %d", err); 93 94 mTSParser->signalEOS(err); 95 mEOS = true; 96 break; 97 } 98 } 99 } 100 } 101 102 return true; 103} 104 105sp<MetaData> NuPlayer::StreamingSource::getFormat(bool audio) { 106 ATSParser::SourceType type = 107 audio ? ATSParser::AUDIO : ATSParser::VIDEO; 108 109 sp<AnotherPacketSource> source = 110 static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get()); 111 112 if (source == NULL) { 113 return NULL; 114 } 115 116 return source->getFormat(); 117} 118 119status_t NuPlayer::StreamingSource::dequeueAccessUnit( 120 bool audio, sp<ABuffer> *accessUnit) { 121 ATSParser::SourceType type = 122 audio ? ATSParser::AUDIO : ATSParser::VIDEO; 123 124 sp<AnotherPacketSource> source = 125 static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get()); 126 127 if (source == NULL) { 128 return -EWOULDBLOCK; 129 } 130 131 status_t finalResult; 132 if (!source->hasBufferAvailable(&finalResult)) { 133 return finalResult == OK ? -EWOULDBLOCK : finalResult; 134 } 135 136 return source->dequeueAccessUnit(accessUnit); 137} 138 139} // namespace android 140 141