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/*
* Copyright (C) 2010 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 "HTTPLiveSource"
#include <utils/Log.h>
#include "HTTPLiveSource.h"
#include "ATSParser.h"
#include "AnotherPacketSource.h"
#include "LiveDataSource.h"
#include "LiveSession.h"
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/MetaData.h>
namespace android {
NuPlayer::HTTPLiveSource::HTTPLiveSource(const char *url)
: mURL(url),
mEOS(false),
mOffset(0) {
}
NuPlayer::HTTPLiveSource::~HTTPLiveSource() {
mLiveSession->disconnect();
mLiveLooper->stop();
}
void NuPlayer::HTTPLiveSource::start() {
mLiveLooper = new ALooper;
mLiveLooper->setName("http live");
mLiveLooper->start();
mLiveSession = new LiveSession;
mLiveLooper->registerHandler(mLiveSession);
mLiveSession->connect(mURL.c_str());
mTSParser = new ATSParser;
}
sp<MetaData> NuPlayer::HTTPLiveSource::getFormat(bool audio) {
ATSParser::SourceType type =
audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
sp<AnotherPacketSource> source =
static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());
if (source == NULL) {
return NULL;
}
return source->getFormat();
}
bool NuPlayer::HTTPLiveSource::feedMoreTSData() {
if (mEOS) {
return false;
}
sp<LiveDataSource> source =
static_cast<LiveDataSource *>(mLiveSession->getDataSource().get());
for (int32_t i = 0; i < 10; ++i) {
char buffer[188];
ssize_t n = source->readAtNonBlocking(mOffset, buffer, sizeof(buffer));
if (n == -EWOULDBLOCK) {
break;
} else if (n < 0) {
LOGI("input data EOS reached.");
mTSParser->signalEOS(ERROR_END_OF_STREAM);
mEOS = true;
break;
} else {
if (buffer[0] == 0x00) {
// XXX legacy
mTSParser->signalDiscontinuity(
buffer[1] == 0x00
? ATSParser::DISCONTINUITY_SEEK
: ATSParser::DISCONTINUITY_FORMATCHANGE);
} else {
mTSParser->feedTSPacket(buffer, sizeof(buffer));
}
mOffset += n;
}
}
return true;
}
status_t NuPlayer::HTTPLiveSource::dequeueAccessUnit(
bool audio, sp<ABuffer> *accessUnit) {
ATSParser::SourceType type =
audio ? ATSParser::MPEG2ADTS_AUDIO : ATSParser::AVC_VIDEO;
sp<AnotherPacketSource> source =
static_cast<AnotherPacketSource *>(mTSParser->getSource(type).get());
if (source == NULL) {
return -EWOULDBLOCK;
}
status_t finalResult;
if (!source->hasBufferAvailable(&finalResult)) {
return finalResult == OK ? -EWOULDBLOCK : finalResult;
}
return source->dequeueAccessUnit(accessUnit);
}
} // namespace android
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