AnotherPacketSource.cpp revision f89d780df70b7fbb8465bce4913c46cca019721f
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#include "AnotherPacketSource.h" 18 19#include <media/stagefright/foundation/ABuffer.h> 20#include <media/stagefright/foundation/ADebug.h> 21#include <media/stagefright/foundation/AMessage.h> 22#include <media/stagefright/foundation/AString.h> 23#include <media/stagefright/foundation/hexdump.h> 24#include <media/stagefright/MediaBuffer.h> 25#include <media/stagefright/MediaDefs.h> 26#include <media/stagefright/MetaData.h> 27#include <utils/Vector.h> 28 29namespace android { 30 31AnotherPacketSource::AnotherPacketSource(const sp<MetaData> &meta) 32 : mFormat(meta), 33 mEOSResult(OK) { 34} 35 36void AnotherPacketSource::setFormat(const sp<MetaData> &meta) { 37 CHECK(mFormat == NULL); 38 mFormat = meta; 39} 40 41AnotherPacketSource::~AnotherPacketSource() { 42} 43 44status_t AnotherPacketSource::start(MetaData *params) { 45 return OK; 46} 47 48status_t AnotherPacketSource::stop() { 49 return OK; 50} 51 52sp<MetaData> AnotherPacketSource::getFormat() { 53 return mFormat; 54} 55 56status_t AnotherPacketSource::dequeueAccessUnit(sp<ABuffer> *buffer) { 57 buffer->clear(); 58 59 Mutex::Autolock autoLock(mLock); 60 while (mEOSResult == OK && mBuffers.empty()) { 61 mCondition.wait(mLock); 62 } 63 64 if (!mBuffers.empty()) { 65 *buffer = *mBuffers.begin(); 66 mBuffers.erase(mBuffers.begin()); 67 68 int32_t discontinuity; 69 if ((*buffer)->meta()->findInt32("discontinuity", &discontinuity)) { 70 71 if (discontinuity == ATSParser::DISCONTINUITY_FORMATCHANGE) { 72 mFormat.clear(); 73 } 74 75 return INFO_DISCONTINUITY; 76 } 77 78 return OK; 79 } 80 81 return mEOSResult; 82} 83 84status_t AnotherPacketSource::read( 85 MediaBuffer **out, const ReadOptions *) { 86 *out = NULL; 87 88 Mutex::Autolock autoLock(mLock); 89 while (mEOSResult == OK && mBuffers.empty()) { 90 mCondition.wait(mLock); 91 } 92 93 if (!mBuffers.empty()) { 94 const sp<ABuffer> buffer = *mBuffers.begin(); 95 mBuffers.erase(mBuffers.begin()); 96 97 int32_t discontinuity; 98 if (buffer->meta()->findInt32("discontinuity", &discontinuity)) { 99 if (discontinuity == ATSParser::DISCONTINUITY_FORMATCHANGE) { 100 mFormat.clear(); 101 } 102 103 return INFO_DISCONTINUITY; 104 } else { 105 int64_t timeUs; 106 CHECK(buffer->meta()->findInt64("timeUs", &timeUs)); 107 108 MediaBuffer *mediaBuffer = new MediaBuffer(buffer); 109 110 mediaBuffer->meta_data()->setInt64(kKeyTime, timeUs); 111 112 *out = mediaBuffer; 113 return OK; 114 } 115 } 116 117 return mEOSResult; 118} 119 120void AnotherPacketSource::queueAccessUnit(const sp<ABuffer> &buffer) { 121 int32_t damaged; 122 if (buffer->meta()->findInt32("damaged", &damaged) && damaged) { 123 // LOG(VERBOSE) << "discarding damaged AU"; 124 return; 125 } 126 127 int64_t timeUs; 128 CHECK(buffer->meta()->findInt64("timeUs", &timeUs)); 129 LOGV("queueAccessUnit timeUs=%lld us (%.2f secs)", timeUs, timeUs / 1E6); 130 131 Mutex::Autolock autoLock(mLock); 132 mBuffers.push_back(buffer); 133 mCondition.signal(); 134} 135 136void AnotherPacketSource::queueDiscontinuity( 137 ATSParser::DiscontinuityType type, 138 const sp<AMessage> &extra) { 139 sp<ABuffer> buffer = new ABuffer(0); 140 buffer->meta()->setInt32("discontinuity", static_cast<int32_t>(type)); 141 buffer->meta()->setMessage("extra", extra); 142 143 Mutex::Autolock autoLock(mLock); 144 145#if 0 146 if (type == ATSParser::DISCONTINUITY_SEEK 147 || type == ATSParser::DISCONTINUITY_FORMATCHANGE) { 148 // XXX Fix this: This will also clear any pending discontinuities, 149 // If there's a pending DISCONTINUITY_FORMATCHANGE and the new 150 // discontinuity is "just" a DISCONTINUITY_SEEK, this will effectively 151 // downgrade the type of discontinuity received by the client. 152 153 mBuffers.clear(); 154 mEOSResult = OK; 155 } 156#endif 157 158 mBuffers.push_back(buffer); 159 mCondition.signal(); 160} 161 162void AnotherPacketSource::signalEOS(status_t result) { 163 CHECK(result != OK); 164 165 Mutex::Autolock autoLock(mLock); 166 mEOSResult = result; 167 mCondition.signal(); 168} 169 170bool AnotherPacketSource::hasBufferAvailable(status_t *finalResult) { 171 Mutex::Autolock autoLock(mLock); 172 if (!mBuffers.empty()) { 173 return true; 174 } 175 176 *finalResult = mEOSResult; 177 return false; 178} 179 180status_t AnotherPacketSource::nextBufferTime(int64_t *timeUs) { 181 *timeUs = 0; 182 183 Mutex::Autolock autoLock(mLock); 184 185 if (mBuffers.empty()) { 186 return mEOSResult != OK ? mEOSResult : -EWOULDBLOCK; 187 } 188 189 sp<ABuffer> buffer = *mBuffers.begin(); 190 CHECK(buffer->meta()->findInt64("timeUs", timeUs)); 191 192 return OK; 193} 194 195} // namespace android 196