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/*
* 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 {
NuPlayer::GenericSource::GenericSource(
const sp<AMessage> &notify,
bool uidValid,
uid_t uid)
: Source(notify),
mFetchSubtitleDataGeneration(0),
mFetchTimedTextDataGeneration(0),
mDurationUs(0ll),
mAudioIsVorbis(false),
mIsWidevine(false),
mUIDValid(uidValid),
mUID(uid),
mDrmManagerClient(NULL),
mMetaDataSize(-1ll),
mBitrate(-1ll),
mPollBufferingGeneration(0),
mPendingReadBufferTypes(0) {
resetDataSource();
DataSource::RegisterDefaultSniffers();
}
void NuPlayer::GenericSource::resetDataSource() {
mAudioTimeUs = 0;
mVideoTimeUs = 0;
mHTTPService.clear();
mHttpSource.clear();
mUri.clear();
mUriHeaders.clear();
mFd = -1;
mOffset = 0;
mLength = 0;
setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
mDecryptHandle = NULL;
mDrmManagerClient = NULL;
mStarted = false;
mStopRead = true;
}
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;
}
sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
return mFileMeta;
}
status_t NuPlayer::GenericSource::initFromDataSource() {
sp<MediaExtractor> extractor;
CHECK(mDataSource != NULL);
if (mIsWidevine) {
String8 mimeType;
float confidence;
sp<AMessage> dummy;
bool success;
success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
if (!success
|| strcasecmp(
mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
ALOGE("unsupported widevine mime: %s", mimeType.string());
return UNKNOWN_ERROR;
}
mWVMExtractor = new WVMExtractor(mDataSource);
mWVMExtractor->setAdaptiveStreamingMode(true);
if (mUIDValid) {
mWVMExtractor->setUID(mUID);
}
extractor = mWVMExtractor;
} else {
extractor = MediaExtractor::Create(mDataSource,
mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
}
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;
}
}
int32_t totalBitrate = 0;
size_t numtracks = extractor->countTracks();
if (numtracks == 0) {
return UNKNOWN_ERROR;
}
for (size_t i = 0; i < numtracks; ++i) {
sp<MediaSource> track = extractor->getTrack(i);
sp<MetaData> meta = extractor->getTrackMetaData(i);
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) {
mIsWidevine = true;
if (mUIDValid) {
extractor->setUID(mUID);
}
}
}
}
if (track != NULL) {
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;
}
}
}
mBitrate = totalBitrate;
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 (mIsWidevine && !audio) {
return mVideoTrack.mSource->setBuffers(buffers);
}
return INVALID_OPERATION;
}
NuPlayer::GenericSource::~GenericSource() {
if (mLooper != NULL) {
mLooper->unregisterHandler(id());
mLooper->stop();
}
}
void NuPlayer::GenericSource::prepareAsync() {
if (mLooper == NULL) {
mLooper = new ALooper;
mLooper->setName("generic");
mLooper->start();
mLooper->registerHandler(this);
}
sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
msg->post();
}
void NuPlayer::GenericSource::onPrepareAsync() {
// delayed data source creation
if (mDataSource == NULL) {
if (!mUri.empty()) {
const char* uri = mUri.c_str();
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, &mContentType,
static_cast<HTTPBase *>(mHttpSource.get()));
} else {
// set to false first, if the extractor
// comes back as secure, set it to true then.
mIsWidevine = false;
mDataSource = new FileSource(mFd, mOffset, mLength);
}
if (mDataSource == NULL) {
ALOGE("Failed to create data source!");
notifyPreparedAndCleanup(UNKNOWN_ERROR);
return;
}
if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
}
if (mIsWidevine || mCachedSource != NULL) {
schedulePollBuffering();
}
}
// check initial caching status
status_t err = prefillCacheIfNecessary();
if (err != OK) {
if (err == -EAGAIN) {
(new AMessage(kWhatPrepareAsync, id()))->post(200000);
} else {
ALOGE("Failed to prefill data cache!");
notifyPreparedAndCleanup(UNKNOWN_ERROR);
}
return;
}
// init extrator from data source
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(
(mIsWidevine ? FLAG_SECURE : 0)
| FLAG_CAN_PAUSE
| FLAG_CAN_SEEK_BACKWARD
| FLAG_CAN_SEEK_FORWARD
| FLAG_CAN_SEEK);
notifyPrepared();
}
void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
if (err != OK) {
mMetaDataSize = -1ll;
mContentType = "";
mSniffedMIME = "";
{
sp<DataSource> dataSource = mDataSource;
sp<NuCachedSource2> cachedSource = mCachedSource;
sp<DataSource> httpSource = mHttpSource;
{
Mutex::Autolock _l(mDisconnectLock);
mDataSource.clear();
mDrmManagerClient = NULL;
mCachedSource.clear();
mHttpSource.clear();
}
}
cancelPollBuffering();
}
notifyPrepared(err);
}
status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
CHECK(mDataSource != NULL);
if (mCachedSource == NULL) {
// no prefill if the data source is not cached
return OK;
}
// We're not doing this for streams that appear to be audio-only
// streams to ensure that even low bandwidth streams start
// playing back fairly instantly.
if (!strncasecmp(mContentType.string(), "audio/", 6)) {
return OK;
}
// We're going to prefill the cache before trying to instantiate
// the extractor below, as the latter is an operation that otherwise
// could block on the datasource for a significant amount of time.
// During that time we'd be unable to abort the preparation phase
// without this prefill.
// Initially make sure we have at least 192 KB for the sniff
// to complete without blocking.
static const size_t kMinBytesForSniffing = 192 * 1024;
static const size_t kDefaultMetaSize = 200000;
status_t finalStatus;
size_t cachedDataRemaining =
mCachedSource->approxDataRemaining(&finalStatus);
if (finalStatus != OK || (mMetaDataSize >= 0
&& (off64_t)cachedDataRemaining >= mMetaDataSize)) {
ALOGV("stop caching, status %d, "
"metaDataSize %lld, cachedDataRemaining %zu",
finalStatus, mMetaDataSize, cachedDataRemaining);
return OK;
}
ALOGV("now cached %zu bytes of data", cachedDataRemaining);
if (mMetaDataSize < 0
&& cachedDataRemaining >= kMinBytesForSniffing) {
String8 tmp;
float confidence;
sp<AMessage> meta;
if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
return UNKNOWN_ERROR;
}
// We successfully identified the file's extractor to
// be, remember this mime type so we don't have to
// sniff it again when we call MediaExtractor::Create()
mSniffedMIME = tmp.string();
if (meta == NULL
|| !meta->findInt64("meta-data-size",
reinterpret_cast<int64_t*>(&mMetaDataSize))) {
mMetaDataSize = kDefaultMetaSize;
}
if (mMetaDataSize < 0ll) {
ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
return UNKNOWN_ERROR;
}
}
return -EAGAIN;
}
void NuPlayer::GenericSource::start() {
ALOGI("start");
mStopRead = false;
if (mAudioTrack.mSource != NULL) {
CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
}
if (mVideoTrack.mSource != NULL) {
CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
}
setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
mStarted = true;
}
void NuPlayer::GenericSource::stop() {
// nothing to do, just account for DRM playback status
setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
mStarted = false;
if (mIsWidevine) {
// For a widevine source we need to prevent any further reads.
sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
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;
}
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::schedulePollBuffering() {
sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
msg->setInt32("generation", mPollBufferingGeneration);
msg->post(1000000ll);
}
void NuPlayer::GenericSource::cancelPollBuffering() {
++mPollBufferingGeneration;
}
void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
sp<AMessage> msg = dupNotify();
msg->setInt32("what", kWhatBufferingUpdate);
msg->setInt32("percentage", percentage);
msg->post();
}
void NuPlayer::GenericSource::onPollBuffering() {
status_t finalStatus = UNKNOWN_ERROR;
int64_t cachedDurationUs = 0ll;
if (mCachedSource != NULL) {
size_t cachedDataRemaining =
mCachedSource->approxDataRemaining(&finalStatus);
if (finalStatus == OK) {
off64_t size;
int64_t bitrate = 0ll;
if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
bitrate = size * 8000000ll / mDurationUs;
} else if (mBitrate > 0) {
bitrate = mBitrate;
}
if (bitrate > 0) {
cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
}
}
} else if (mWVMExtractor != NULL) {
cachedDurationUs
= mWVMExtractor->getCachedDurationUs(&finalStatus);
}
if (finalStatus == ERROR_END_OF_STREAM) {
notifyBufferingUpdate(100);
cancelPollBuffering();
return;
} else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
int percentage = 100.0 * cachedDurationUs / mDurationUs;
if (percentage > 100) {
percentage = 100;
}
notifyBufferingUpdate(percentage);
}
schedulePollBuffering();
}
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 kWhatSendTimedTextData:
{
sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
break;
}
case kWhatChangeAVSource:
{
int32_t trackIndex;
CHECK(msg->findInt32("trackIndex", &trackIndex));
const sp<MediaSource> 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;
status_t avail;
if (!track->mPackets->hasBufferAvailable(&avail)) {
// sync from other source
TRESPASS();
break;
}
int64_t timeUs, actualTimeUs;
const bool formatChange = true;
sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
readBuffer(counterpartType, -1, NULL, formatChange);
ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
break;
}
case kWhatPollBuffering:
{
int32_t generation;
CHECK(msg->findInt32("generation", &generation));
if (generation == mPollBufferingGeneration) {
onPollBuffering();
}
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 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;
uint32_t 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, id());
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);
}
}
sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
msg->setInt32("audio", audio);
sp<AMessage> response;
void *format;
status_t err = msg->postAndAwaitResponse(&response);
if (err == OK && response != NULL) {
CHECK(response->findPointer("format", &format));
return (MetaData *)format;
} 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->setPointer("format", format.get());
uint32_t replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
if (source == NULL) {
return NULL;
}
return source->getFormat();
}
status_t NuPlayer::GenericSource::dequeueAccessUnit(
bool audio, sp<ABuffer> *accessUnit) {
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)) {
return (finalResult == OK ? -EWOULDBLOCK : finalResult);
}
status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
if (!track->mPackets->hasBufferAvailable(&finalResult)) {
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 (mSubtitleTrack.mSource != NULL
&& !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
msg->setInt64("timeUs", timeUs);
msg->setInt32("generation", mFetchSubtitleDataGeneration);
msg->post();
}
if (mTimedTextTrack.mSource != NULL
&& !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
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();
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &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) {
format->setString("mime", mime);
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, id());
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);
uint32_t 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) {
ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
msg->setInt32("trackIndex", trackIndex);
msg->setInt32("select", select);
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;
CHECK(msg->findInt32("trackIndex", &trackIndex));
CHECK(msg->findInt32("select", &select));
sp<AMessage> response = new AMessage;
status_t err = doSelectTrack(trackIndex, select);
response->setInt32("err", err);
uint32_t replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
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<MediaSource> 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++;
}
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, id());
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, id());
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);
uint32_t replyID;
CHECK(msg->senderAwaitsResponse(&replyID));
response->postReply(replyID);
}
status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
// 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;
}
if (mAudioTrack.mSource != NULL) {
readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
}
setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
if (!mStarted) {
setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
}
return OK;
}
sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
MediaBuffer* mb,
media_track_type trackType,
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 (mIsWidevine && !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 (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);
}
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, id());
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;
{
// only protect the variable change, as readBuffer may
// take considerable time. This may result in one extra
// read being processed, but that is benign.
Mutex::Autolock _l(mReadBufferLock);
mPendingReadBufferTypes &= ~(1 << trackType);
}
readBuffer(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;
}
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 && trackType != MEDIA_TRACK_TYPE_AUDIO) {
options.setNonBlocking();
}
for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
MediaBuffer *mbuf;
status_t err = track->mSource->read(&mbuf, &options);
options.clearSeekTo();
if (err == OK) {
int64_t timeUs;
CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
mAudioTimeUs = timeUs;
} else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
mVideoTimeUs = timeUs;
}
// 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)
: ATSParser::DISCONTINUITY_SEEK;
track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
}
sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
track->mPackets->queueAccessUnit(buffer);
formatChange = false;
seeking = false;
++numBuffers;
} else if (err == WOULD_BLOCK) {
break;
} else if (err == INFO_FORMAT_CHANGED) {
#if 0
track->mPackets->queueDiscontinuity(
ATSParser::DISCONTINUITY_FORMATCHANGE,
NULL,
false /* discard */);
#endif
} else {
track->mPackets->signalEOS(err);
break;
}
}
}
} // namespace android