/*
* 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 "GenericSource"
#include "GenericSource.h"
#include "AnotherPacketSource.h"
#include <media/IMediaHTTPService.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/FileSource.h>
#include <media/stagefright/MediaBuffer.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MediaSource.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/Utils.h>
#include "../../libstagefright/include/DRMExtractor.h"
#include "../../libstagefright/include/NuCachedSource2.h"
#include "../../libstagefright/include/WVMExtractor.h"
#include "../../libstagefright/include/HTTPBase.h"
namespace android {
static int64_t kLowWaterMarkUs = 2000000ll; // 2secs
static int64_t kHighWaterMarkUs = 5000000ll; // 5secs
static int64_t kHighWaterMarkRebufferUs = 15000000ll; // 15secs
static const ssize_t kLowWaterMarkBytes = 40000;
static const ssize_t kHighWaterMarkBytes = 200000;
NuPlayer::GenericSource::GenericSource(
const sp<AMessage> ¬ify,
bool uidValid,
uid_t uid)
: Source(notify),
mAudioTimeUs(0),
mAudioLastDequeueTimeUs(0),
mVideoTimeUs(0),
mVideoLastDequeueTimeUs(0),
mFetchSubtitleDataGeneration(0),
mFetchTimedTextDataGeneration(0),
mDurationUs(-1ll),
mAudioIsVorbis(false),
mIsWidevine(false),
mIsSecure(false),
mIsStreaming(false),
mUIDValid(uidValid),
mUID(uid),
mFd(-1),
mDrmManagerClient(NULL),
mBitrate(-1ll),
mPendingReadBufferTypes(0) {
mBufferingMonitor = new BufferingMonitor(notify);
resetDataSource();
DataSource::RegisterDefaultSniffers();
}
void NuPlayer::GenericSource::resetDataSource() {
mHTTPService.clear();
mHttpSource.clear();
mUri.clear();
mUriHeaders.clear();
if (mFd >= 0) {
close(mFd);
mFd = -1;
}
mOffset = 0;
mLength = 0;
setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
mDecryptHandle = NULL;
mDrmManagerClient = NULL;
mStarted = false;
mStopRead = true;
if (mBufferingMonitorLooper != NULL) {
mBufferingMonitorLooper->unregisterHandler(mBufferingMonitor->id());
mBufferingMonitorLooper->stop();
mBufferingMonitorLooper = NULL;
}
mBufferingMonitor->stop();
}
status_t NuPlayer::GenericSource::setDataSource(
const sp<IMediaHTTPService> &httpService,
const char *url,
const KeyedVector<String8, String8> *headers) {
resetDataSource();
mHTTPService = httpService;
mUri = url;
if (headers) {
mUriHeaders = *headers;
}
// delay data source creation to prepareAsync() to avoid blocking
// the calling thread in setDataSource for any significant time.
return OK;
}
status_t NuPlayer::GenericSource::setDataSource(
int fd, int64_t offset, int64_t length) {
resetDataSource();
mFd = dup(fd);
mOffset = offset;
mLength = length;
// delay data source creation to prepareAsync() to avoid blocking
// the calling thread in setDataSource for any significant time.
return OK;
}
status_t NuPlayer::GenericSource::setDataSource(const sp<DataSource>& source) {
resetDataSource();
mDataSource = source;
return OK;
}
sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
return mFileMeta;
}
status_t NuPlayer::GenericSource::initFromDataSource() {
sp<IMediaExtractor> extractor;
String8 mimeType;
float confidence;
sp<AMessage> dummy;
bool isWidevineStreaming = false;
CHECK(mDataSource != NULL);
if (mIsWidevine) {
isWidevineStreaming = SniffWVM(
mDataSource, &mimeType, &confidence, &dummy);
if (!isWidevineStreaming ||
strcasecmp(
mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
ALOGE("unsupported widevine mime: %s", mimeType.string());
return UNKNOWN_ERROR;
}
} else if (mIsStreaming) {
if (!mDataSource->sniff(&mimeType, &confidence, &dummy)) {
return UNKNOWN_ERROR;
}
isWidevineStreaming = !strcasecmp(
mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM);
}
if (isWidevineStreaming) {
// we don't want cached source for widevine streaming.
mCachedSource.clear();
mDataSource = mHttpSource;
mWVMExtractor = new WVMExtractor(mDataSource);
mWVMExtractor->setAdaptiveStreamingMode(true);
if (mUIDValid) {
mWVMExtractor->setUID(mUID);
}
extractor = mWVMExtractor;
} else {
extractor = MediaExtractor::Create(mDataSource,
mimeType.isEmpty() ? NULL : mimeType.string());
}
if (extractor == NULL) {
return UNKNOWN_ERROR;
}
if (extractor->getDrmFlag()) {
checkDrmStatus(mDataSource);
}
mFileMeta = extractor->getMetaData();
if (mFileMeta != NULL) {
int64_t duration;
if (mFileMeta->findInt64(kKeyDuration, &duration)) {
mDurationUs = duration;
}
if (!mIsWidevine) {
// Check mime to see if we actually have a widevine source.
// If the data source is not URL-type (eg. file source), we
// won't be able to tell until now.
const char *fileMime;
if (mFileMeta->findCString(kKeyMIMEType, &fileMime)
&& !strncasecmp(fileMime, "video/wvm", 9)) {
mIsWidevine = true;
}
}
}
int32_t totalBitrate = 0;
size_t numtracks = extractor->countTracks();
if (numtracks == 0) {
return UNKNOWN_ERROR;
}
for (size_t i = 0; i < numtracks; ++i) {
sp<IMediaSource> track = extractor->getTrack(i);
if (track == NULL) {
continue;
}
sp<MetaData> meta = extractor->getTrackMetaData(i);
if (meta == NULL) {
ALOGE("no metadata for track %zu", i);
return UNKNOWN_ERROR;
}
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &mime));
// Do the string compare immediately with "mime",
// we can't assume "mime" would stay valid after another
// extractor operation, some extractors might modify meta
// during getTrack() and make it invalid.
if (!strncasecmp(mime, "audio/", 6)) {
if (mAudioTrack.mSource == NULL) {
mAudioTrack.mIndex = i;
mAudioTrack.mSource = track;
mAudioTrack.mPackets =
new AnotherPacketSource(mAudioTrack.mSource->getFormat());
if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
mAudioIsVorbis = true;
} else {
mAudioIsVorbis = false;
}
}
} else if (!strncasecmp(mime, "video/", 6)) {
if (mVideoTrack.mSource == NULL) {
mVideoTrack.mIndex = i;
mVideoTrack.mSource = track;
mVideoTrack.mPackets =
new AnotherPacketSource(mVideoTrack.mSource->getFormat());
// check if the source requires secure buffers
int32_t secure;
if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
&& secure) {
mIsSecure = true;
if (mUIDValid) {
extractor->setUID(mUID);
}
}
}
}
mSources.push(track);
int64_t durationUs;
if (meta->findInt64(kKeyDuration, &durationUs)) {
if (durationUs > mDurationUs) {
mDurationUs = durationUs;
}
}
int32_t bitrate;
if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
totalBitrate += bitrate;
} else {
totalBitrate = -1;
}
}
if (mSources.size() == 0) {
ALOGE("b/23705695");
return UNKNOWN_ERROR;
}
mBitrate = totalBitrate;
return OK;
}
status_t NuPlayer::GenericSource::startSources() {
// Start the selected A/V tracks now before we start buffering.
// Widevine sources might re-initialize crypto when starting, if we delay
// this to start(), all data buffered during prepare would be wasted.
// (We don't actually start reading until start().)
if (mAudioTrack.mSource != NULL && mAudioTrack.mSource->start() != OK) {
ALOGE("failed to start audio track!");
return UNKNOWN_ERROR;
}
if (mVideoTrack.mSource != NULL && mVideoTrack.mSource->start() != OK) {
ALOGE("failed to start video track!");
return UNKNOWN_ERROR;
}
return OK;
}
void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
if (mDecryptHandle != NULL) {
CHECK(mDrmManagerClient);
if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
sp<AMessage> msg = dupNotify();
msg->setInt32("what", kWhatDrmNoLicense);
msg->post();
}
}
}
int64_t NuPlayer::GenericSource::getLastReadPosition() {
if (mAudioTrack.mSource != NULL) {
return mAudioTimeUs;
} else if (mVideoTrack.mSource != NULL) {
return mVideoTimeUs;
} else {
return 0;
}
}
status_t NuPlayer::GenericSource::setBuffers(
bool audio, Vector<MediaBuffer *> &buffers) {
if (mIsSecure && !audio && mVideoTrack.mSource != NULL) {
return mVideoTrack.mSource->setBuffers(buffers);
}
return INVALID_OPERATION;
}
bool NuPlayer::GenericSource::isStreaming() const {
return mIsStreaming;
}
void NuPlayer::GenericSource::setOffloadAudio(bool offload) {
mBufferingMonitor->setOffloadAudio(offload);
}
NuPlayer::GenericSource::~GenericSource() {
if (mLooper != NULL) {
mLooper->unregisterHandler(id());
mLooper->stop();
}
resetDataSource();
}
void NuPlayer::GenericSource::prepareAsync() {
if (mLooper == NULL) {
mLooper = new ALooper;
mLooper->setName("generic");
mLooper->start();
mLooper->registerHandler(this);
}
sp<AMessage> msg = new AMessage(kWhatPrepareAsync, this);
msg->post();
}
void NuPlayer::GenericSource::onPrepareAsync() {
// delayed data source creation
if (mDataSource == NULL) {
// set to false first, if the extractor
// comes back as secure, set it to true then.
mIsSecure = false;
if (!mUri.empty()) {
const char* uri = mUri.c_str();
String8 contentType;
mIsWidevine = !strncasecmp(uri, "widevine://", 11);
if (!strncasecmp("http://", uri, 7)
|| !strncasecmp("https://", uri, 8)
|| mIsWidevine) {
mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
if (mHttpSource == NULL) {
ALOGE("Failed to create http source!");
notifyPreparedAndCleanup(UNKNOWN_ERROR);
return;
}
}
mDataSource = DataSource::CreateFromURI(
mHTTPService, uri, &mUriHeaders, &contentType,
static_cast<HTTPBase *>(mHttpSource.get()));
} else {
mIsWidevine = false;
mDataSource = new FileSource(mFd, mOffset, mLength);
mFd = -1;
}
if (mDataSource == NULL) {
ALOGE("Failed to create data source!");
notifyPreparedAndCleanup(UNKNOWN_ERROR);
return;
}
}
if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
}
// For widevine or other cached streaming cases, we need to wait for
// enough buffering before reporting prepared.
// Note that even when URL doesn't start with widevine://, mIsWidevine
// could still be set to true later, if the streaming or file source
// is sniffed to be widevine. We don't want to buffer for file source
// in that case, so must check the flag now.
mIsStreaming = (mIsWidevine || mCachedSource != NULL);
// init extractor from data source
status_t err = initFromDataSource();
if (err != OK) {
ALOGE("Failed to init from data source!");
notifyPreparedAndCleanup(err);
return;
}
if (mVideoTrack.mSource != NULL) {
sp<MetaData> meta = doGetFormatMeta(false /* audio */);
sp<AMessage> msg = new AMessage;
err = convertMetaDataToMessage(meta, &msg);
if(err != OK) {
notifyPreparedAndCleanup(err);
return;
}
notifyVideoSizeChanged(msg);
}
notifyFlagsChanged(
(mIsSecure ? FLAG_SECURE : 0)
| (mDecryptHandle != NULL ? FLAG_PROTECTED : 0)
| FLAG_CAN_PAUSE
| FLAG_CAN_SEEK_BACKWARD
| FLAG_CAN_SEEK_FORWARD
| FLAG_CAN_SEEK);
if (mIsSecure) {
// secure decoders must be instantiated before starting widevine source
sp<AMessage> reply = new AMessage(kWhatSecureDecodersInstantiated, this);
notifyInstantiateSecureDecoders(reply);
} else {
finishPrepareAsync();
}
}
void NuPlayer::GenericSource::onSecureDecodersInstantiated(status_t err) {
if (err != OK) {
ALOGE("Failed to instantiate secure decoders!");
notifyPreparedAndCleanup(err);
return;
}
finishPrepareAsync();
}
void NuPlayer::GenericSource::finishPrepareAsync() {
status_t err = startSources();
if (err != OK) {
ALOGE("Failed to init start data source!");
notifyPreparedAndCleanup(err);
return;
}
if (mIsStreaming) {
if (mBufferingMonitorLooper == NULL) {
mBufferingMonitor->prepare(mCachedSource, mWVMExtractor, mDurationUs, mBitrate,
mIsStreaming);
mBufferingMonitorLooper = new ALooper;
mBufferingMonitorLooper->setName("GSBMonitor");
mBufferingMonitorLooper->start();
mBufferingMonitorLooper->registerHandler(mBufferingMonitor);
}
mBufferingMonitor->ensureCacheIsFetching();
mBufferingMonitor->restartPollBuffering();
} else {
notifyPrepared();
}
}
void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
if (err != OK) {
{
sp<DataSource> dataSource = mDataSource;
sp<NuCachedSource2> cachedSource = mCachedSource;
sp<DataSource> httpSource = mHttpSource;
{
Mutex::Autolock _l(mDisconnectLock);
mDataSource.clear();
mDecryptHandle = NULL;
mDrmManagerClient = NULL;
mCachedSource.clear();
mHttpSource.clear();
}
}
mBitrate = -1;
mBufferingMonitor->cancelPollBuffering();
}
notifyPrepared(err);
}
void NuPlayer::GenericSource::start() {
ALOGI("start");
mStopRead = false;
if (mAudioTrack.mSource != NULL) {
postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
}
if (mVideoTrack.mSource != NULL) {
postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
}
setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
mStarted = true;
(new AMessage(kWhatStart, this))->post();
}
void NuPlayer::GenericSource::stop() {
// nothing to do, just account for DRM playback status
setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
mStarted = false;
if (mIsWidevine || mIsSecure) {
// For widevine or secure sources we need to prevent any further reads.
sp<AMessage> msg = new AMessage(kWhatStopWidevine, this);
sp<AMessage> response;
(void) msg->postAndAwaitResponse(&response);
}
}
void NuPlayer::GenericSource::pause() {
// nothing to do, just account for DRM playback status
setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
mStarted = false;
}
void NuPlayer::GenericSource::resume() {
// nothing to do, just account for DRM playback status
setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
mStarted = true;
(new AMessage(kWhatResume, this))->post();
}
void NuPlayer::GenericSource::disconnect() {
sp<DataSource> dataSource, httpSource;
{
Mutex::Autolock _l(mDisconnectLock);
dataSource = mDataSource;
httpSource = mHttpSource;
}
if (dataSource != NULL) {
// disconnect data source
if (dataSource->flags() & DataSource::kIsCachingDataSource) {
static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
}
} else if (httpSource != NULL) {
static_cast<HTTPBase *>(httpSource.get())->disconnect();
}
}
void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
if (mDecryptHandle != NULL) {
mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
}
mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
}
status_t NuPlayer::GenericSource::feedMoreTSData() {
return OK;
}
void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
switch (msg->what()) {
case kWhatPrepareAsync:
{
onPrepareAsync();
break;
}
case kWhatFetchSubtitleData:
{
fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
break;
}
case kWhatFetchTimedTextData:
{
fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
break;
}
case kWhatSendSubtitleData:
{
sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
break;
}
case kWhatSendGlobalTimedTextData:
{
sendGlobalTextData(kWhatTimedTextData, mFetchTimedTextDataGeneration, msg);
break;
}
case kWhatSendTimedTextData:
{
sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
break;
}
case kWhatChangeAVSource:
{
int32_t trackIndex;
CHECK(msg->findInt32("trackIndex", &trackIndex));
const sp<IMediaSource> source = mSources.itemAt(trackIndex);
Track* track;
const char *mime;
media_track_type trackType, counterpartType;
sp<MetaData> meta = source->getFormat();
meta->findCString(kKeyMIMEType, &mime);
if (!strncasecmp(mime, "audio/", 6)) {
track = &mAudioTrack;
trackType = MEDIA_TRACK_TYPE_AUDIO;
counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
} else {
CHECK(!strncasecmp(mime, "video/", 6));
track = &mVideoTrack;
trackType = MEDIA_TRACK_TYPE_VIDEO;
counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
}
if (track->mSource != NULL) {
track->mSource->stop();
}
track->mSource = source;
track->mSource->start();
track->mIndex = trackIndex;
int64_t timeUs, actualTimeUs;
const bool formatChange = true;
if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
timeUs = mAudioLastDequeueTimeUs;
} else {
timeUs = mVideoLastDequeueTimeUs;
}
readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
readBuffer(counterpartType, -1, NULL, formatChange);
ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs);
break;
}
case kWhatStart:
case kWhatResume:
{
mBufferingMonitor->restartPollBuffering();
break;
}
case kWhatGetFormat:
{
onGetFormatMeta(msg);
break;
}
case kWhatGetSelectedTrack:
{
onGetSelectedTrack(msg);
break;
}
case kWhatSelectTrack:
{
onSelectTrack(msg);
break;
}
case kWhatSeek:
{
onSeek(msg);
break;
}
case kWhatReadBuffer:
{
onReadBuffer(msg);
break;
}
case kWhatSecureDecodersInstantiated:
{
int32_t err;
CHECK(msg->findInt32("err", &err));
onSecureDecodersInstantiated(err);
break;
}
case kWhatStopWidevine:
{
// mStopRead is only used for Widevine to prevent the video source
// from being read while the associated video decoder is shutting down.
mStopRead = true;
if (mVideoTrack.mSource != NULL) {
mVideoTrack.mPackets->clear();
}
sp<AMessage> response = new AMessage;
sp<AReplyToken> replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
break;
}
default:
Source::onMessageReceived(msg);
break;
}
}
void NuPlayer::GenericSource::fetchTextData(
uint32_t sendWhat,
media_track_type type,
int32_t curGen,
sp<AnotherPacketSource> packets,
sp<AMessage> msg) {
int32_t msgGeneration;
CHECK(msg->findInt32("generation", &msgGeneration));
if (msgGeneration != curGen) {
// stale
return;
}
int32_t avail;
if (packets->hasBufferAvailable(&avail)) {
return;
}
int64_t timeUs;
CHECK(msg->findInt64("timeUs", &timeUs));
int64_t subTimeUs;
readBuffer(type, timeUs, &subTimeUs);
int64_t delayUs = subTimeUs - timeUs;
if (msg->what() == kWhatFetchSubtitleData) {
const int64_t oneSecUs = 1000000ll;
delayUs -= oneSecUs;
}
sp<AMessage> msg2 = new AMessage(sendWhat, this);
msg2->setInt32("generation", msgGeneration);
msg2->post(delayUs < 0 ? 0 : delayUs);
}
void NuPlayer::GenericSource::sendTextData(
uint32_t what,
media_track_type type,
int32_t curGen,
sp<AnotherPacketSource> packets,
sp<AMessage> msg) {
int32_t msgGeneration;
CHECK(msg->findInt32("generation", &msgGeneration));
if (msgGeneration != curGen) {
// stale
return;
}
int64_t subTimeUs;
if (packets->nextBufferTime(&subTimeUs) != OK) {
return;
}
int64_t nextSubTimeUs;
readBuffer(type, -1, &nextSubTimeUs);
sp<ABuffer> buffer;
status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
if (dequeueStatus == OK) {
sp<AMessage> notify = dupNotify();
notify->setInt32("what", what);
notify->setBuffer("buffer", buffer);
notify->post();
const int64_t delayUs = nextSubTimeUs - subTimeUs;
msg->post(delayUs < 0 ? 0 : delayUs);
}
}
void NuPlayer::GenericSource::sendGlobalTextData(
uint32_t what,
int32_t curGen,
sp<AMessage> msg) {
int32_t msgGeneration;
CHECK(msg->findInt32("generation", &msgGeneration));
if (msgGeneration != curGen) {
// stale
return;
}
uint32_t textType;
const void *data;
size_t size = 0;
if (mTimedTextTrack.mSource->getFormat()->findData(
kKeyTextFormatData, &textType, &data, &size)) {
mGlobalTimedText = new ABuffer(size);
if (mGlobalTimedText->data()) {
memcpy(mGlobalTimedText->data(), data, size);
sp<AMessage> globalMeta = mGlobalTimedText->meta();
globalMeta->setInt64("timeUs", 0);
globalMeta->setString("mime", MEDIA_MIMETYPE_TEXT_3GPP);
globalMeta->setInt32("global", 1);
sp<AMessage> notify = dupNotify();
notify->setInt32("what", what);
notify->setBuffer("buffer", mGlobalTimedText);
notify->post();
}
}
}
sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
sp<AMessage> msg = new AMessage(kWhatGetFormat, this);
msg->setInt32("audio", audio);
sp<AMessage> response;
sp<RefBase> format;
status_t err = msg->postAndAwaitResponse(&response);
if (err == OK && response != NULL) {
CHECK(response->findObject("format", &format));
return static_cast<MetaData*>(format.get());
} else {
return NULL;
}
}
void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
int32_t audio;
CHECK(msg->findInt32("audio", &audio));
sp<AMessage> response = new AMessage;
sp<MetaData> format = doGetFormatMeta(audio);
response->setObject("format", format);
sp<AReplyToken> replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
sp<IMediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
if (source == NULL) {
return NULL;
}
return source->getFormat();
}
status_t NuPlayer::GenericSource::dequeueAccessUnit(
bool audio, sp<ABuffer> *accessUnit) {
if (audio && !mStarted) {
return -EWOULDBLOCK;
}
Track *track = audio ? &mAudioTrack : &mVideoTrack;
if (track->mSource == NULL) {
return -EWOULDBLOCK;
}
if (mIsWidevine && !audio) {
// try to read a buffer as we may not have been able to the last time
postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
}
status_t finalResult;
if (!track->mPackets->hasBufferAvailable(&finalResult)) {
if (finalResult == OK) {
postReadBuffer(
audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
return -EWOULDBLOCK;
}
return finalResult;
}
status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
// start pulling in more buffers if we only have one (or no) buffer left
// so that decoder has less chance of being starved
if (track->mPackets->getAvailableBufferCount(&finalResult) < 2) {
postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
}
if (result != OK) {
if (mSubtitleTrack.mSource != NULL) {
mSubtitleTrack.mPackets->clear();
mFetchSubtitleDataGeneration++;
}
if (mTimedTextTrack.mSource != NULL) {
mTimedTextTrack.mPackets->clear();
mFetchTimedTextDataGeneration++;
}
return result;
}
int64_t timeUs;
status_t eosResult; // ignored
CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
if (audio) {
mAudioLastDequeueTimeUs = timeUs;
mBufferingMonitor->updateDequeuedBufferTime(timeUs);
} else {
mVideoLastDequeueTimeUs = timeUs;
}
if (mSubtitleTrack.mSource != NULL
&& !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
msg->setInt64("timeUs", timeUs);
msg->setInt32("generation", mFetchSubtitleDataGeneration);
msg->post();
}
if (mTimedTextTrack.mSource != NULL
&& !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
msg->setInt64("timeUs", timeUs);
msg->setInt32("generation", mFetchTimedTextDataGeneration);
msg->post();
}
return result;
}
status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
*durationUs = mDurationUs;
return OK;
}
size_t NuPlayer::GenericSource::getTrackCount() const {
return mSources.size();
}
sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
size_t trackCount = mSources.size();
if (trackIndex >= trackCount) {
return NULL;
}
sp<AMessage> format = new AMessage();
sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
if (meta == NULL) {
ALOGE("no metadata for track %zu", trackIndex);
return NULL;
}
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &mime));
format->setString("mime", mime);
int32_t trackType;
if (!strncasecmp(mime, "video/", 6)) {
trackType = MEDIA_TRACK_TYPE_VIDEO;
} else if (!strncasecmp(mime, "audio/", 6)) {
trackType = MEDIA_TRACK_TYPE_AUDIO;
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
} else {
trackType = MEDIA_TRACK_TYPE_UNKNOWN;
}
format->setInt32("type", trackType);
const char *lang;
if (!meta->findCString(kKeyMediaLanguage, &lang)) {
lang = "und";
}
format->setString("language", lang);
if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
meta->findInt32(kKeyTrackIsDefault, &isDefault);
meta->findInt32(kKeyTrackIsForced, &isForced);
format->setInt32("auto", !!isAutoselect);
format->setInt32("default", !!isDefault);
format->setInt32("forced", !!isForced);
}
return format;
}
ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, this);
msg->setInt32("type", type);
sp<AMessage> response;
int32_t index;
status_t err = msg->postAndAwaitResponse(&response);
if (err == OK && response != NULL) {
CHECK(response->findInt32("index", &index));
return index;
} else {
return -1;
}
}
void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
int32_t tmpType;
CHECK(msg->findInt32("type", &tmpType));
media_track_type type = (media_track_type)tmpType;
sp<AMessage> response = new AMessage;
ssize_t index = doGetSelectedTrack(type);
response->setInt32("index", index);
sp<AReplyToken> replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
const Track *track = NULL;
switch (type) {
case MEDIA_TRACK_TYPE_VIDEO:
track = &mVideoTrack;
break;
case MEDIA_TRACK_TYPE_AUDIO:
track = &mAudioTrack;
break;
case MEDIA_TRACK_TYPE_TIMEDTEXT:
track = &mTimedTextTrack;
break;
case MEDIA_TRACK_TYPE_SUBTITLE:
track = &mSubtitleTrack;
break;
default:
break;
}
if (track != NULL && track->mSource != NULL) {
return track->mIndex;
}
return -1;
}
status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
sp<AMessage> msg = new AMessage(kWhatSelectTrack, this);
msg->setInt32("trackIndex", trackIndex);
msg->setInt32("select", select);
msg->setInt64("timeUs", timeUs);
sp<AMessage> response;
status_t err = msg->postAndAwaitResponse(&response);
if (err == OK && response != NULL) {
CHECK(response->findInt32("err", &err));
}
return err;
}
void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
int32_t trackIndex, select;
int64_t timeUs;
CHECK(msg->findInt32("trackIndex", &trackIndex));
CHECK(msg->findInt32("select", &select));
CHECK(msg->findInt64("timeUs", &timeUs));
sp<AMessage> response = new AMessage;
status_t err = doSelectTrack(trackIndex, select, timeUs);
response->setInt32("err", err);
sp<AReplyToken> replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
if (trackIndex >= mSources.size()) {
return BAD_INDEX;
}
if (!select) {
Track* track = NULL;
if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
track = &mSubtitleTrack;
mFetchSubtitleDataGeneration++;
} else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
track = &mTimedTextTrack;
mFetchTimedTextDataGeneration++;
}
if (track == NULL) {
return INVALID_OPERATION;
}
track->mSource->stop();
track->mSource = NULL;
track->mPackets->clear();
return OK;
}
const sp<IMediaSource> source = mSources.itemAt(trackIndex);
sp<MetaData> meta = source->getFormat();
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &mime));
if (!strncasecmp(mime, "text/", 5)) {
bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
if (track->mSource != NULL && track->mIndex == trackIndex) {
return OK;
}
track->mIndex = trackIndex;
if (track->mSource != NULL) {
track->mSource->stop();
}
track->mSource = mSources.itemAt(trackIndex);
track->mSource->start();
if (track->mPackets == NULL) {
track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
} else {
track->mPackets->clear();
track->mPackets->setFormat(track->mSource->getFormat());
}
if (isSubtitle) {
mFetchSubtitleDataGeneration++;
} else {
mFetchTimedTextDataGeneration++;
}
status_t eosResult; // ignored
if (mSubtitleTrack.mSource != NULL
&& !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
msg->setInt64("timeUs", timeUs);
msg->setInt32("generation", mFetchSubtitleDataGeneration);
msg->post();
}
sp<AMessage> msg2 = new AMessage(kWhatSendGlobalTimedTextData, this);
msg2->setInt32("generation", mFetchTimedTextDataGeneration);
msg2->post();
if (mTimedTextTrack.mSource != NULL
&& !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
msg->setInt64("timeUs", timeUs);
msg->setInt32("generation", mFetchTimedTextDataGeneration);
msg->post();
}
return OK;
} else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
bool audio = !strncasecmp(mime, "audio/", 6);
Track *track = audio ? &mAudioTrack : &mVideoTrack;
if (track->mSource != NULL && track->mIndex == trackIndex) {
return OK;
}
sp<AMessage> msg = new AMessage(kWhatChangeAVSource, this);
msg->setInt32("trackIndex", trackIndex);
msg->post();
return OK;
}
return INVALID_OPERATION;
}
status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
sp<AMessage> msg = new AMessage(kWhatSeek, this);
msg->setInt64("seekTimeUs", seekTimeUs);
sp<AMessage> response;
status_t err = msg->postAndAwaitResponse(&response);
if (err == OK && response != NULL) {
CHECK(response->findInt32("err", &err));
}
return err;
}
void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
int64_t seekTimeUs;
CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
sp<AMessage> response = new AMessage;
status_t err = doSeek(seekTimeUs);
response->setInt32("err", err);
sp<AReplyToken> replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
mBufferingMonitor->updateDequeuedBufferTime(-1ll);
// If the Widevine source is stopped, do not attempt to read any
// more buffers.
if (mStopRead) {
return INVALID_OPERATION;
}
if (mVideoTrack.mSource != NULL) {
int64_t actualTimeUs;
readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
seekTimeUs = actualTimeUs;
mVideoLastDequeueTimeUs = seekTimeUs;
}
if (mAudioTrack.mSource != NULL) {
readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
mAudioLastDequeueTimeUs = seekTimeUs;
}
setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
if (!mStarted) {
setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
}
// If currently buffering, post kWhatBufferingEnd first, so that
// NuPlayer resumes. Otherwise, if cache hits high watermark
// before new polling happens, no one will resume the playback.
mBufferingMonitor->stopBufferingIfNecessary();
mBufferingMonitor->restartPollBuffering();
return OK;
}
sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
MediaBuffer* mb,
media_track_type trackType,
int64_t /* seekTimeUs */,
int64_t *actualTimeUs) {
bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
size_t outLength = mb->range_length();
if (audio && mAudioIsVorbis) {
outLength += sizeof(int32_t);
}
sp<ABuffer> ab;
if (mIsSecure && !audio) {
// data is already provided in the buffer
ab = new ABuffer(NULL, mb->range_length());
mb->add_ref();
ab->setMediaBufferBase(mb);
} else {
ab = new ABuffer(outLength);
memcpy(ab->data(),
(const uint8_t *)mb->data() + mb->range_offset(),
mb->range_length());
}
if (audio && mAudioIsVorbis) {
int32_t numPageSamples;
if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
numPageSamples = -1;
}
uint8_t* abEnd = ab->data() + mb->range_length();
memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
}
sp<AMessage> meta = ab->meta();
int64_t timeUs;
CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
meta->setInt64("timeUs", timeUs);
#if 0
// Temporarily disable pre-roll till we have a full solution to handle
// both single seek and continous seek gracefully.
if (seekTimeUs > timeUs) {
sp<AMessage> extra = new AMessage;
extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
meta->setMessage("extra", extra);
}
#endif
if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
const char *mime;
CHECK(mTimedTextTrack.mSource != NULL
&& mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
meta->setString("mime", mime);
}
int64_t durationUs;
if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
meta->setInt64("durationUs", durationUs);
}
if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
}
uint32_t dataType; // unused
const void *seiData;
size_t seiLength;
if (mb->meta_data()->findData(kKeySEI, &dataType, &seiData, &seiLength)) {
sp<ABuffer> sei = ABuffer::CreateAsCopy(seiData, seiLength);;
meta->setBuffer("sei", sei);
}
const void *mpegUserDataPointer;
size_t mpegUserDataLength;
if (mb->meta_data()->findData(
kKeyMpegUserData, &dataType, &mpegUserDataPointer, &mpegUserDataLength)) {
sp<ABuffer> mpegUserData = ABuffer::CreateAsCopy(mpegUserDataPointer, mpegUserDataLength);
meta->setBuffer("mpegUserData", mpegUserData);
}
if (actualTimeUs) {
*actualTimeUs = timeUs;
}
mb->release();
mb = NULL;
return ab;
}
void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
Mutex::Autolock _l(mReadBufferLock);
if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
mPendingReadBufferTypes |= (1 << trackType);
sp<AMessage> msg = new AMessage(kWhatReadBuffer, this);
msg->setInt32("trackType", trackType);
msg->post();
}
}
void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
int32_t tmpType;
CHECK(msg->findInt32("trackType", &tmpType));
media_track_type trackType = (media_track_type)tmpType;
readBuffer(trackType);
{
// only protect the variable change, as readBuffer may
// take considerable time.
Mutex::Autolock _l(mReadBufferLock);
mPendingReadBufferTypes &= ~(1 << trackType);
}
}
void NuPlayer::GenericSource::readBuffer(
media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
// Do not read data if Widevine source is stopped
if (mStopRead) {
return;
}
Track *track;
size_t maxBuffers = 1;
switch (trackType) {
case MEDIA_TRACK_TYPE_VIDEO:
track = &mVideoTrack;
if (mIsWidevine) {
maxBuffers = 2;
} else {
maxBuffers = 4;
}
break;
case MEDIA_TRACK_TYPE_AUDIO:
track = &mAudioTrack;
if (mIsWidevine) {
maxBuffers = 8;
} else {
maxBuffers = 64;
}
break;
case MEDIA_TRACK_TYPE_SUBTITLE:
track = &mSubtitleTrack;
break;
case MEDIA_TRACK_TYPE_TIMEDTEXT:
track = &mTimedTextTrack;
break;
default:
TRESPASS();
}
if (track->mSource == NULL) {
return;
}
if (actualTimeUs) {
*actualTimeUs = seekTimeUs;
}
MediaSource::ReadOptions options;
bool seeking = false;
if (seekTimeUs >= 0) {
options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
seeking = true;
}
if (mIsWidevine) {
options.setNonBlocking();
}
bool couldReadMultiple = (!mIsWidevine && trackType == MEDIA_TRACK_TYPE_AUDIO);
for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
Vector<MediaBuffer *> mediaBuffers;
status_t err = NO_ERROR;
if (!seeking && couldReadMultiple) {
err = track->mSource->readMultiple(&mediaBuffers, (maxBuffers - numBuffers));
} else {
MediaBuffer *mbuf = NULL;
err = track->mSource->read(&mbuf, &options);
if (err == OK && mbuf != NULL) {
mediaBuffers.push_back(mbuf);
}
}
options.clearSeekTo();
size_t id = 0;
size_t count = mediaBuffers.size();
for (; id < count; ++id) {
int64_t timeUs;
MediaBuffer *mbuf = mediaBuffers[id];
if (!mbuf->meta_data()->findInt64(kKeyTime, &timeUs)) {
mbuf->meta_data()->dumpToLog();
track->mPackets->signalEOS(ERROR_MALFORMED);
break;
}
if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
mAudioTimeUs = timeUs;
mBufferingMonitor->updateQueuedTime(true /* isAudio */, timeUs);
} else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
mVideoTimeUs = timeUs;
mBufferingMonitor->updateQueuedTime(false /* isAudio */, timeUs);
}
queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
sp<ABuffer> buffer = mediaBufferToABuffer(
mbuf, trackType, seekTimeUs,
numBuffers == 0 ? actualTimeUs : NULL);
track->mPackets->queueAccessUnit(buffer);
formatChange = false;
seeking = false;
++numBuffers;
}
if (id < count) {
// Error, some mediaBuffer doesn't have kKeyTime.
for (; id < count; ++id) {
mediaBuffers[id]->release();
}
break;
}
if (err == WOULD_BLOCK) {
break;
} else if (err == INFO_FORMAT_CHANGED) {
#if 0
track->mPackets->queueDiscontinuity(
ATSParser::DISCONTINUITY_FORMATCHANGE,
NULL,
false /* discard */);
#endif
} else if (err != OK) {
queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
track->mPackets->signalEOS(err);
break;
}
}
}
void NuPlayer::GenericSource::queueDiscontinuityIfNeeded(
bool seeking, bool formatChange, media_track_type trackType, Track *track) {
// formatChange && seeking: track whose source is changed during selection
// formatChange && !seeking: track whose source is not changed during selection
// !formatChange: normal seek
if ((seeking || formatChange)
&& (trackType == MEDIA_TRACK_TYPE_AUDIO
|| trackType == MEDIA_TRACK_TYPE_VIDEO)) {
ATSParser::DiscontinuityType type = (formatChange && seeking)
? ATSParser::DISCONTINUITY_FORMATCHANGE
: ATSParser::DISCONTINUITY_NONE;
track->mPackets->queueDiscontinuity(type, NULL /* extra */, true /* discard */);
}
}
NuPlayer::GenericSource::BufferingMonitor::BufferingMonitor(const sp<AMessage> ¬ify)
: mNotify(notify),
mDurationUs(-1ll),
mBitrate(-1ll),
mIsStreaming(false),
mAudioTimeUs(0),
mVideoTimeUs(0),
mPollBufferingGeneration(0),
mPrepareBuffering(false),
mBuffering(false),
mPrevBufferPercentage(-1),
mOffloadAudio(false),
mFirstDequeuedBufferRealUs(-1ll),
mFirstDequeuedBufferMediaUs(-1ll),
mlastDequeuedBufferMediaUs(-1ll) {
}
NuPlayer::GenericSource::BufferingMonitor::~BufferingMonitor() {
}
void NuPlayer::GenericSource::BufferingMonitor::prepare(
const sp<NuCachedSource2> &cachedSource,
const sp<WVMExtractor> &wvmExtractor,
int64_t durationUs,
int64_t bitrate,
bool isStreaming) {
Mutex::Autolock _l(mLock);
prepare_l(cachedSource, wvmExtractor, durationUs, bitrate, isStreaming);
}
void NuPlayer::GenericSource::BufferingMonitor::stop() {
Mutex::Autolock _l(mLock);
prepare_l(NULL /* cachedSource */, NULL /* wvmExtractor */, -1 /* durationUs */,
-1 /* bitrate */, false /* isStreaming */);
}
void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering() {
Mutex::Autolock _l(mLock);
cancelPollBuffering_l();
}
void NuPlayer::GenericSource::BufferingMonitor::restartPollBuffering() {
Mutex::Autolock _l(mLock);
if (mIsStreaming) {
cancelPollBuffering_l();
onPollBuffering_l();
}
}
void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary() {
Mutex::Autolock _l(mLock);
stopBufferingIfNecessary_l();
}
void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching() {
Mutex::Autolock _l(mLock);
ensureCacheIsFetching_l();
}
void NuPlayer::GenericSource::BufferingMonitor::updateQueuedTime(bool isAudio, int64_t timeUs) {
Mutex::Autolock _l(mLock);
if (isAudio) {
mAudioTimeUs = timeUs;
} else {
mVideoTimeUs = timeUs;
}
}
void NuPlayer::GenericSource::BufferingMonitor::setOffloadAudio(bool offload) {
Mutex::Autolock _l(mLock);
mOffloadAudio = offload;
}
void NuPlayer::GenericSource::BufferingMonitor::updateDequeuedBufferTime(int64_t mediaUs) {
Mutex::Autolock _l(mLock);
if (mediaUs < 0) {
mFirstDequeuedBufferRealUs = -1ll;
mFirstDequeuedBufferMediaUs = -1ll;
} else if (mFirstDequeuedBufferRealUs < 0) {
mFirstDequeuedBufferRealUs = ALooper::GetNowUs();
mFirstDequeuedBufferMediaUs = mediaUs;
}
mlastDequeuedBufferMediaUs = mediaUs;
}
void NuPlayer::GenericSource::BufferingMonitor::prepare_l(
const sp<NuCachedSource2> &cachedSource,
const sp<WVMExtractor> &wvmExtractor,
int64_t durationUs,
int64_t bitrate,
bool isStreaming) {
ALOGW_IF(wvmExtractor != NULL && cachedSource != NULL,
"WVMExtractor and NuCachedSource are both present when "
"BufferingMonitor::prepare_l is called, ignore NuCachedSource");
mCachedSource = cachedSource;
mWVMExtractor = wvmExtractor;
mDurationUs = durationUs;
mBitrate = bitrate;
mIsStreaming = isStreaming;
mAudioTimeUs = 0;
mVideoTimeUs = 0;
mPrepareBuffering = (cachedSource != NULL || wvmExtractor != NULL);
cancelPollBuffering_l();
mOffloadAudio = false;
mFirstDequeuedBufferRealUs = -1ll;
mFirstDequeuedBufferMediaUs = -1ll;
mlastDequeuedBufferMediaUs = -1ll;
}
void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering_l() {
mBuffering = false;
++mPollBufferingGeneration;
mPrevBufferPercentage = -1;
}
void NuPlayer::GenericSource::BufferingMonitor::notifyBufferingUpdate_l(int32_t percentage) {
// Buffering percent could go backward as it's estimated from remaining
// data and last access time. This could cause the buffering position
// drawn on media control to jitter slightly. Remember previously reported
// percentage and don't allow it to go backward.
if (percentage < mPrevBufferPercentage) {
percentage = mPrevBufferPercentage;
} else if (percentage > 100) {
percentage = 100;
}
mPrevBufferPercentage = percentage;
ALOGV("notifyBufferingUpdate_l: buffering %d%%", percentage);
sp<AMessage> msg = mNotify->dup();
msg->setInt32("what", kWhatBufferingUpdate);
msg->setInt32("percentage", percentage);
msg->post();
}
void NuPlayer::GenericSource::BufferingMonitor::startBufferingIfNecessary_l() {
if (mPrepareBuffering) {
return;
}
if (!mBuffering) {
ALOGD("startBufferingIfNecessary_l");
mBuffering = true;
ensureCacheIsFetching_l();
sendCacheStats_l();
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatPauseOnBufferingStart);
notify->post();
}
}
void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary_l() {
if (mPrepareBuffering) {
ALOGD("stopBufferingIfNecessary_l, mBuffering=%d", mBuffering);
mPrepareBuffering = false;
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatPrepared);
notify->setInt32("err", OK);
notify->post();
return;
}
if (mBuffering) {
ALOGD("stopBufferingIfNecessary_l");
mBuffering = false;
sendCacheStats_l();
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatResumeOnBufferingEnd);
notify->post();
}
}
void NuPlayer::GenericSource::BufferingMonitor::sendCacheStats_l() {
int32_t kbps = 0;
status_t err = UNKNOWN_ERROR;
if (mWVMExtractor != NULL) {
err = mWVMExtractor->getEstimatedBandwidthKbps(&kbps);
} else if (mCachedSource != NULL) {
err = mCachedSource->getEstimatedBandwidthKbps(&kbps);
}
if (err == OK) {
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatCacheStats);
notify->setInt32("bandwidth", kbps);
notify->post();
}
}
void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching_l() {
if (mCachedSource != NULL) {
mCachedSource->resumeFetchingIfNecessary();
}
}
void NuPlayer::GenericSource::BufferingMonitor::schedulePollBuffering_l() {
sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
msg->setInt32("generation", mPollBufferingGeneration);
// Enquires buffering status every second.
msg->post(1000000ll);
}
int64_t NuPlayer::GenericSource::BufferingMonitor::getLastReadPosition_l() {
if (mAudioTimeUs > 0) {
return mAudioTimeUs;
} else if (mVideoTimeUs > 0) {
return mVideoTimeUs;
} else {
return 0;
}
}
void NuPlayer::GenericSource::BufferingMonitor::onPollBuffering_l() {
status_t finalStatus = UNKNOWN_ERROR;
int64_t cachedDurationUs = -1ll;
ssize_t cachedDataRemaining = -1;
if (mWVMExtractor != NULL) {
cachedDurationUs =
mWVMExtractor->getCachedDurationUs(&finalStatus);
} else if (mCachedSource != NULL) {
cachedDataRemaining =
mCachedSource->approxDataRemaining(&finalStatus);
if (finalStatus == OK) {
off64_t size;
int64_t bitrate = 0ll;
if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
// |bitrate| uses bits/second unit, while size is number of bytes.
bitrate = size * 8000000ll / mDurationUs;
} else if (mBitrate > 0) {
bitrate = mBitrate;
}
if (bitrate > 0) {
cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
}
}
}
if (finalStatus != OK) {
ALOGV("onPollBuffering_l: EOS (finalStatus = %d)", finalStatus);
if (finalStatus == ERROR_END_OF_STREAM) {
notifyBufferingUpdate_l(100);
}
stopBufferingIfNecessary_l();
return;
} else if (cachedDurationUs >= 0ll) {
if (mDurationUs > 0ll) {
int64_t cachedPosUs = getLastReadPosition_l() + cachedDurationUs;
int percentage = 100.0 * cachedPosUs / mDurationUs;
if (percentage > 100) {
percentage = 100;
}
notifyBufferingUpdate_l(percentage);
}
ALOGV("onPollBuffering_l: cachedDurationUs %.1f sec",
cachedDurationUs / 1000000.0f);
if (cachedDurationUs < kLowWaterMarkUs) {
// Take into account the data cached in downstream components to try to avoid
// unnecessary pause.
if (mOffloadAudio && mFirstDequeuedBufferRealUs >= 0) {
int64_t downStreamCacheUs = mlastDequeuedBufferMediaUs - mFirstDequeuedBufferMediaUs
- (ALooper::GetNowUs() - mFirstDequeuedBufferRealUs);
if (downStreamCacheUs > 0) {
cachedDurationUs += downStreamCacheUs;
}
}
if (cachedDurationUs < kLowWaterMarkUs) {
startBufferingIfNecessary_l();
}
} else {
int64_t highWaterMark = mPrepareBuffering ? kHighWaterMarkUs : kHighWaterMarkRebufferUs;
if (cachedDurationUs > highWaterMark) {
stopBufferingIfNecessary_l();
}
}
} else if (cachedDataRemaining >= 0) {
ALOGV("onPollBuffering_l: cachedDataRemaining %zd bytes",
cachedDataRemaining);
if (cachedDataRemaining < kLowWaterMarkBytes) {
startBufferingIfNecessary_l();
} else if (cachedDataRemaining > kHighWaterMarkBytes) {
stopBufferingIfNecessary_l();
}
}
schedulePollBuffering_l();
}
void NuPlayer::GenericSource::BufferingMonitor::onMessageReceived(const sp<AMessage> &msg) {
switch (msg->what()) {
case kWhatPollBuffering:
{
int32_t generation;
CHECK(msg->findInt32("generation", &generation));
Mutex::Autolock _l(mLock);
if (generation == mPollBufferingGeneration) {
onPollBuffering_l();
}
break;
}
default:
TRESPASS();
break;
}
}
} // namespace android