| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "AMPEG2TSAssembler" |
| #include <utils/Log.h> |
| |
| #include "AMPEG2TSAssembler.h" |
| |
| #include "ARTPSource.h" |
| #include "ASessionDescription.h" |
| |
| #include <media/stagefright/foundation/ABuffer.h> |
| #include <media/stagefright/foundation/ADebug.h> |
| #include <media/stagefright/foundation/AMessage.h> |
| #include <media/stagefright/foundation/hexdump.h> |
| #include <media/stagefright/MediaDefs.h> |
| #include <media/stagefright/MetaData.h> |
| #include <media/stagefright/Utils.h> |
| |
| namespace android { |
| |
| AMPEG2TSAssembler::AMPEG2TSAssembler( |
| const sp<AMessage> ¬ify, |
| const char * /* desc */, |
| const AString & /* params */) |
| : mNotifyMsg(notify), |
| mNextExpectedSeqNoValid(false), |
| mNextExpectedSeqNo(0) { |
| } |
| |
| AMPEG2TSAssembler::~AMPEG2TSAssembler() { |
| } |
| |
| ARTPAssembler::AssemblyStatus AMPEG2TSAssembler::assembleMore( |
| const sp<ARTPSource> &source) { |
| return addPacket(source); |
| } |
| |
| ARTPAssembler::AssemblyStatus AMPEG2TSAssembler::addPacket( |
| const sp<ARTPSource> &source) { |
| List<sp<ABuffer> > *queue = source->queue(); |
| |
| if (queue->empty()) { |
| return NOT_ENOUGH_DATA; |
| } |
| |
| if (mNextExpectedSeqNoValid) { |
| List<sp<ABuffer> >::iterator it = queue->begin(); |
| while (it != queue->end()) { |
| if ((uint32_t)(*it)->int32Data() >= mNextExpectedSeqNo) { |
| break; |
| } |
| |
| it = queue->erase(it); |
| } |
| |
| if (queue->empty()) { |
| return NOT_ENOUGH_DATA; |
| } |
| } |
| |
| sp<ABuffer> buffer = *queue->begin(); |
| |
| if (!mNextExpectedSeqNoValid) { |
| mNextExpectedSeqNoValid = true; |
| mNextExpectedSeqNo = (uint32_t)buffer->int32Data(); |
| } else if ((uint32_t)buffer->int32Data() != mNextExpectedSeqNo) { |
| ALOGV("Not the sequence number I expected"); |
| |
| return WRONG_SEQUENCE_NUMBER; |
| } |
| |
| // hexdump(buffer->data(), buffer->size()); |
| |
| if ((buffer->size() % 188) > 0) { |
| queue->erase(queue->begin()); |
| ++mNextExpectedSeqNo; |
| |
| ALOGV("Not a multiple of transport packet size."); |
| |
| return MALFORMED_PACKET; |
| } |
| |
| sp<AMessage> msg = mNotifyMsg->dup(); |
| msg->setBuffer("access-unit", buffer); |
| msg->post(); |
| |
| queue->erase(queue->begin()); |
| ++mNextExpectedSeqNo; |
| |
| return OK; |
| } |
| |
| void AMPEG2TSAssembler::packetLost() { |
| CHECK(mNextExpectedSeqNoValid); |
| ++mNextExpectedSeqNo; |
| } |
| |
| void AMPEG2TSAssembler::onByeReceived() { |
| sp<AMessage> msg = mNotifyMsg->dup(); |
| msg->setInt32("eos", true); |
| msg->post(); |
| } |
| |
| } // namespace android |
| |
| |