blob: b3b3af5b39a9eae4222bc924f54a636ef240ba92 [file] [log] [blame]
/*
* 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,
const KeyedVector<String8, String8> *headers)
: mURL(url),
mFlags(0),
mEOS(false),
mOffset(0) {
if (headers) {
mExtraHeaders = *headers;
ssize_t index =
mExtraHeaders.indexOfKey(String8("x-hide-urls-from-log"));
if (index >= 0) {
mFlags |= kFlagIncognito;
mExtraHeaders.removeItemsAt(index);
}
}
}
NuPlayer::HTTPLiveSource::~HTTPLiveSource() {
mLiveSession->disconnect();
mLiveLooper->stop();
}
void NuPlayer::HTTPLiveSource::start() {
mLiveLooper = new ALooper;
mLiveLooper->setName("http live");
mLiveLooper->start();
mLiveSession = new LiveSession(
(mFlags & kFlagIncognito) ? LiveSession::kFlagIncognito : 0);
mLiveLooper->registerHandler(mLiveSession);
mLiveSession->connect(
mURL.c_str(), mExtraHeaders.isEmpty() ? NULL : &mExtraHeaders);
mTSParser = new ATSParser;
}
sp<MetaData> NuPlayer::HTTPLiveSource::getFormat(bool audio) {
ATSParser::SourceType type =
audio ? ATSParser::AUDIO : ATSParser::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 < 50; ++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(n);
mEOS = true;
break;
} else {
if (buffer[0] == 0x00) {
// XXX legacy
sp<AMessage> extra;
mTSParser->signalDiscontinuity(
buffer[1] == 0x00
? ATSParser::DISCONTINUITY_SEEK
: ATSParser::DISCONTINUITY_FORMATCHANGE,
extra);
} 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::AUDIO : ATSParser::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);
}
status_t NuPlayer::HTTPLiveSource::getDuration(int64_t *durationUs) {
return mLiveSession->getDuration(durationUs);
}
status_t NuPlayer::HTTPLiveSource::seekTo(int64_t seekTimeUs) {
// We need to make sure we're not seeking until we have seen the very first
// PTS timestamp in the whole stream (from the beginning of the stream).
while (!mTSParser->PTSTimeDeltaEstablished() && feedMoreTSData()) {
usleep(100000);
}
mLiveSession->seekTo(seekTimeUs);
return OK;
}
bool NuPlayer::HTTPLiveSource::isSeekable() {
return mLiveSession->isSeekable();
}
} // namespace android