/*
* 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 "NuPlayer"
#include <utils/Log.h>
#include "NuPlayer.h"
#include "HTTPLiveSource.h"
#include "NuPlayerDecoder.h"
#include "NuPlayerDriver.h"
#include "NuPlayerRenderer.h"
#include "NuPlayerSource.h"
#include "RTSPSource.h"
#include "StreamingSource.h"
#include "GenericSource.h"
#include "ATSParser.h"
#include <media/stagefright/foundation/hexdump.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/ACodec.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/MetaData.h>
#include <gui/ISurfaceTexture.h>
#include "avc_utils.h"
namespace android {
////////////////////////////////////////////////////////////////////////////////
NuPlayer::NuPlayer()
: mUIDValid(false),
mVideoIsAVC(false),
mAudioEOS(false),
mVideoEOS(false),
mScanSourcesPending(false),
mScanSourcesGeneration(0),
mTimeDiscontinuityPending(false),
mFlushingAudio(NONE),
mFlushingVideo(NONE),
mResetInProgress(false),
mResetPostponed(false),
mSkipRenderingAudioUntilMediaTimeUs(-1ll),
mSkipRenderingVideoUntilMediaTimeUs(-1ll),
mVideoLateByUs(0ll),
mNumFramesTotal(0ll),
mNumFramesDropped(0ll) {
}
NuPlayer::~NuPlayer() {
}
void NuPlayer::setUID(uid_t uid) {
mUIDValid = true;
mUID = uid;
}
void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
mDriver = driver;
}
void NuPlayer::setDataSource(const sp<IStreamSource> &source) {
sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
msg->setObject("source", new StreamingSource(source));
msg->post();
}
static bool IsHTTPLiveURL(const char *url) {
if (!strncasecmp("http://", url, 7)
|| !strncasecmp("https://", url, 8)) {
size_t len = strlen(url);
if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
return true;
}
if (strstr(url,"m3u8")) {
return true;
}
}
return false;
}
void NuPlayer::setDataSource(
const char *url, const KeyedVector<String8, String8> *headers) {
sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
sp<Source> source;
if (IsHTTPLiveURL(url)) {
source = new HTTPLiveSource(url, headers, mUIDValid, mUID);
} else if (!strncasecmp(url, "rtsp://", 7)) {
source = new RTSPSource(url, headers, mUIDValid, mUID);
} else {
source = new GenericSource(url, headers, mUIDValid, mUID);
}
msg->setObject("source", source);
msg->post();
}
void NuPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
sp<Source> source = new GenericSource(fd, offset, length);
msg->setObject("source", source);
msg->post();
}
void NuPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) {
sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
sp<SurfaceTextureClient> surfaceTextureClient(surfaceTexture != NULL ?
new SurfaceTextureClient(surfaceTexture) : NULL);
msg->setObject("native-window", new NativeWindowWrapper(surfaceTextureClient));
msg->post();
}
void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
msg->setObject("sink", sink);
msg->post();
}
void NuPlayer::start() {
(new AMessage(kWhatStart, id()))->post();
}
void NuPlayer::pause() {
(new AMessage(kWhatPause, id()))->post();
}
void NuPlayer::resume() {
(new AMessage(kWhatResume, id()))->post();
}
void NuPlayer::resetAsync() {
(new AMessage(kWhatReset, id()))->post();
}
void NuPlayer::seekToAsync(int64_t seekTimeUs) {
sp<AMessage> msg = new AMessage(kWhatSeek, id());
msg->setInt64("seekTimeUs", seekTimeUs);
msg->post();
}
// static
bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
switch (state) {
case FLUSHING_DECODER:
if (needShutdown != NULL) {
*needShutdown = false;
}
return true;
case FLUSHING_DECODER_SHUTDOWN:
if (needShutdown != NULL) {
*needShutdown = true;
}
return true;
default:
return false;
}
}
void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
switch (msg->what()) {
case kWhatSetDataSource:
{
ALOGV("kWhatSetDataSource");
CHECK(mSource == NULL);
sp<RefBase> obj;
CHECK(msg->findObject("source", &obj));
mSource = static_cast<Source *>(obj.get());
break;
}
case kWhatSetVideoNativeWindow:
{
ALOGV("kWhatSetVideoNativeWindow");
sp<RefBase> obj;
CHECK(msg->findObject("native-window", &obj));
mNativeWindow = static_cast<NativeWindowWrapper *>(obj.get());
break;
}
case kWhatSetAudioSink:
{
ALOGV("kWhatSetAudioSink");
sp<RefBase> obj;
CHECK(msg->findObject("sink", &obj));
mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
break;
}
case kWhatStart:
{
ALOGV("kWhatStart");
mVideoIsAVC = false;
mAudioEOS = false;
mVideoEOS = false;
mSkipRenderingAudioUntilMediaTimeUs = -1;
mSkipRenderingVideoUntilMediaTimeUs = -1;
mVideoLateByUs = 0;
mNumFramesTotal = 0;
mNumFramesDropped = 0;
mSource->start();
mRenderer = new Renderer(
mAudioSink,
new AMessage(kWhatRendererNotify, id()));
looper()->registerHandler(mRenderer);
postScanSources();
break;
}
case kWhatScanSources:
{
int32_t generation;
CHECK(msg->findInt32("generation", &generation));
if (generation != mScanSourcesGeneration) {
// Drop obsolete msg.
break;
}
mScanSourcesPending = false;
ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
mAudioDecoder != NULL, mVideoDecoder != NULL);
instantiateDecoder(false, &mVideoDecoder);
if (mAudioSink != NULL) {
instantiateDecoder(true, &mAudioDecoder);
}
status_t err;
if ((err = mSource->feedMoreTSData()) != OK) {
if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
// We're not currently decoding anything (no audio or
// video tracks found) and we just ran out of input data.
if (err == ERROR_END_OF_STREAM) {
notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
} else {
notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
}
}
break;
}
if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
msg->post(100000ll);
mScanSourcesPending = true;
}
break;
}
case kWhatVideoNotify:
case kWhatAudioNotify:
{
bool audio = msg->what() == kWhatAudioNotify;
sp<AMessage> codecRequest;
CHECK(msg->findMessage("codec-request", &codecRequest));
int32_t what;
CHECK(codecRequest->findInt32("what", &what));
if (what == ACodec::kWhatFillThisBuffer) {
status_t err = feedDecoderInputData(
audio, codecRequest);
if (err == -EWOULDBLOCK) {
if (mSource->feedMoreTSData() == OK) {
msg->post(10000ll);
}
}
} else if (what == ACodec::kWhatEOS) {
int32_t err;
CHECK(codecRequest->findInt32("err", &err));
if (err == ERROR_END_OF_STREAM) {
ALOGV("got %s decoder EOS", audio ? "audio" : "video");
} else {
ALOGV("got %s decoder EOS w/ error %d",
audio ? "audio" : "video",
err);
}
mRenderer->queueEOS(audio, err);
} else if (what == ACodec::kWhatFlushCompleted) {
bool needShutdown;
if (audio) {
CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
mFlushingAudio = FLUSHED;
} else {
CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
mFlushingVideo = FLUSHED;
mVideoLateByUs = 0;
}
ALOGV("decoder %s flush completed", audio ? "audio" : "video");
if (needShutdown) {
ALOGV("initiating %s decoder shutdown",
audio ? "audio" : "video");
(audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
if (audio) {
mFlushingAudio = SHUTTING_DOWN_DECODER;
} else {
mFlushingVideo = SHUTTING_DOWN_DECODER;
}
}
finishFlushIfPossible();
} else if (what == ACodec::kWhatOutputFormatChanged) {
if (audio) {
int32_t numChannels;
CHECK(codecRequest->findInt32("channel-count", &numChannels));
int32_t sampleRate;
CHECK(codecRequest->findInt32("sample-rate", &sampleRate));
ALOGV("Audio output format changed to %d Hz, %d channels",
sampleRate, numChannels);
mAudioSink->close();
audio_output_flags_t flags;
int64_t durationUs;
// FIXME: we should handle the case where the video decoder is created after
// we receive the format change indication. Current code will just make that
// we select deep buffer with video which should not be a problem as it should
// not prevent from keeping A/V sync.
if (mVideoDecoder == NULL &&
mSource->getDuration(&durationUs) == OK &&
durationUs > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
} else {
flags = AUDIO_OUTPUT_FLAG_NONE;
}
int32_t channelMask;
if (!codecRequest->findInt32("channel-mask", &channelMask)) {
channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
}
CHECK_EQ(mAudioSink->open(
sampleRate,
numChannels,
(audio_channel_mask_t)channelMask,
AUDIO_FORMAT_PCM_16_BIT,
8 /* bufferCount */,
NULL,
NULL,
flags),
(status_t)OK);
mAudioSink->start();
mRenderer->signalAudioSinkChanged();
} else {
// video
int32_t width, height;
CHECK(codecRequest->findInt32("width", &width));
CHECK(codecRequest->findInt32("height", &height));
int32_t cropLeft, cropTop, cropRight, cropBottom;
CHECK(codecRequest->findRect(
"crop",
&cropLeft, &cropTop, &cropRight, &cropBottom));
ALOGV("Video output format changed to %d x %d "
"(crop: %d x %d @ (%d, %d))",
width, height,
(cropRight - cropLeft + 1),
(cropBottom - cropTop + 1),
cropLeft, cropTop);
notifyListener(
MEDIA_SET_VIDEO_SIZE,
cropRight - cropLeft + 1,
cropBottom - cropTop + 1);
}
} else if (what == ACodec::kWhatShutdownCompleted) {
ALOGV("%s shutdown completed", audio ? "audio" : "video");
if (audio) {
mAudioDecoder.clear();
CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
mFlushingAudio = SHUT_DOWN;
} else {
mVideoDecoder.clear();
CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
mFlushingVideo = SHUT_DOWN;
}
finishFlushIfPossible();
} else if (what == ACodec::kWhatError) {
ALOGE("Received error from %s decoder, aborting playback.",
audio ? "audio" : "video");
mRenderer->queueEOS(audio, UNKNOWN_ERROR);
} else if (what == ACodec::kWhatDrainThisBuffer) {
renderBuffer(audio, codecRequest);
} else {
ALOGV("Unhandled codec notification %d.", what);
}
break;
}
case kWhatRendererNotify:
{
int32_t what;
CHECK(msg->findInt32("what", &what));
if (what == Renderer::kWhatEOS) {
int32_t audio;
CHECK(msg->findInt32("audio", &audio));
int32_t finalResult;
CHECK(msg->findInt32("finalResult", &finalResult));
if (audio) {
mAudioEOS = true;
} else {
mVideoEOS = true;
}
if (finalResult == ERROR_END_OF_STREAM) {
ALOGV("reached %s EOS", audio ? "audio" : "video");
} else {
ALOGE("%s track encountered an error (%d)",
audio ? "audio" : "video", finalResult);
notifyListener(
MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
}
if ((mAudioEOS || mAudioDecoder == NULL)
&& (mVideoEOS || mVideoDecoder == NULL)) {
notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
}
} else if (what == Renderer::kWhatPosition) {
int64_t positionUs;
CHECK(msg->findInt64("positionUs", &positionUs));
CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
if (mDriver != NULL) {
sp<NuPlayerDriver> driver = mDriver.promote();
if (driver != NULL) {
driver->notifyPosition(positionUs);
driver->notifyFrameStats(
mNumFramesTotal, mNumFramesDropped);
}
}
} else if (what == Renderer::kWhatFlushComplete) {
CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
int32_t audio;
CHECK(msg->findInt32("audio", &audio));
ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
}
break;
}
case kWhatMoreDataQueued:
{
break;
}
case kWhatReset:
{
ALOGV("kWhatReset");
if (mRenderer != NULL) {
// There's an edge case where the renderer owns all output
// buffers and is paused, therefore the decoder will not read
// more input data and will never encounter the matching
// discontinuity. To avoid this, we resume the renderer.
if (mFlushingAudio == AWAITING_DISCONTINUITY
|| mFlushingVideo == AWAITING_DISCONTINUITY) {
mRenderer->resume();
}
}
if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
// We're currently flushing, postpone the reset until that's
// completed.
ALOGV("postponing reset mFlushingAudio=%d, mFlushingVideo=%d",
mFlushingAudio, mFlushingVideo);
mResetPostponed = true;
break;
}
if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
finishReset();
break;
}
mTimeDiscontinuityPending = true;
if (mAudioDecoder != NULL) {
flushDecoder(true /* audio */, true /* needShutdown */);
}
if (mVideoDecoder != NULL) {
flushDecoder(false /* audio */, true /* needShutdown */);
}
mResetInProgress = true;
break;
}
case kWhatSeek:
{
int64_t seekTimeUs;
CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
ALOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
seekTimeUs, seekTimeUs / 1E6);
mSource->seekTo(seekTimeUs);
if (mDriver != NULL) {
sp<NuPlayerDriver> driver = mDriver.promote();
if (driver != NULL) {
driver->notifySeekComplete();
}
}
break;
}
case kWhatPause:
{
CHECK(mRenderer != NULL);
mRenderer->pause();
break;
}
case kWhatResume:
{
CHECK(mRenderer != NULL);
mRenderer->resume();
break;
}
default:
TRESPASS();
break;
}
}
void NuPlayer::finishFlushIfPossible() {
if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
return;
}
if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
return;
}
ALOGV("both audio and video are flushed now.");
if (mTimeDiscontinuityPending) {
mRenderer->signalTimeDiscontinuity();
mTimeDiscontinuityPending = false;
}
if (mAudioDecoder != NULL) {
mAudioDecoder->signalResume();
}
if (mVideoDecoder != NULL) {
mVideoDecoder->signalResume();
}
mFlushingAudio = NONE;
mFlushingVideo = NONE;
if (mResetInProgress) {
ALOGV("reset completed");
mResetInProgress = false;
finishReset();
} else if (mResetPostponed) {
(new AMessage(kWhatReset, id()))->post();
mResetPostponed = false;
} else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
postScanSources();
}
}
void NuPlayer::finishReset() {
CHECK(mAudioDecoder == NULL);
CHECK(mVideoDecoder == NULL);
++mScanSourcesGeneration;
mScanSourcesPending = false;
mRenderer.clear();
if (mSource != NULL) {
mSource->stop();
mSource.clear();
}
if (mDriver != NULL) {
sp<NuPlayerDriver> driver = mDriver.promote();
if (driver != NULL) {
driver->notifyResetComplete();
}
}
}
void NuPlayer::postScanSources() {
if (mScanSourcesPending) {
return;
}
sp<AMessage> msg = new AMessage(kWhatScanSources, id());
msg->setInt32("generation", mScanSourcesGeneration);
msg->post();
mScanSourcesPending = true;
}
status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
if (*decoder != NULL) {
return OK;
}
sp<MetaData> meta = mSource->getFormat(audio);
if (meta == NULL) {
return -EWOULDBLOCK;
}
if (!audio) {
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &mime));
mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime);
}
sp<AMessage> notify =
new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
id());
*decoder = audio ? new Decoder(notify) :
new Decoder(notify, mNativeWindow);
looper()->registerHandler(*decoder);
(*decoder)->configure(meta);
int64_t durationUs;
if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
sp<NuPlayerDriver> driver = mDriver.promote();
if (driver != NULL) {
driver->notifyDuration(durationUs);
}
}
return OK;
}
status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
sp<AMessage> reply;
CHECK(msg->findMessage("reply", &reply));
if ((audio && IsFlushingState(mFlushingAudio))
|| (!audio && IsFlushingState(mFlushingVideo))) {
reply->setInt32("err", INFO_DISCONTINUITY);
reply->post();
return OK;
}
sp<ABuffer> accessUnit;
bool dropAccessUnit;
do {
status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
if (err == -EWOULDBLOCK) {
return err;
} else if (err != OK) {
if (err == INFO_DISCONTINUITY) {
int32_t type;
CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
bool formatChange =
(audio &&
(type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
|| (!audio &&
(type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
ALOGI("%s discontinuity (formatChange=%d, time=%d)",
audio ? "audio" : "video", formatChange, timeChange);
if (audio) {
mSkipRenderingAudioUntilMediaTimeUs = -1;
} else {
mSkipRenderingVideoUntilMediaTimeUs = -1;
}
if (timeChange) {
sp<AMessage> extra;
if (accessUnit->meta()->findMessage("extra", &extra)
&& extra != NULL) {
int64_t resumeAtMediaTimeUs;
if (extra->findInt64(
"resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
ALOGI("suppressing rendering of %s until %lld us",
audio ? "audio" : "video", resumeAtMediaTimeUs);
if (audio) {
mSkipRenderingAudioUntilMediaTimeUs =
resumeAtMediaTimeUs;
} else {
mSkipRenderingVideoUntilMediaTimeUs =
resumeAtMediaTimeUs;
}
}
}
}
mTimeDiscontinuityPending =
mTimeDiscontinuityPending || timeChange;
if (formatChange || timeChange) {
flushDecoder(audio, formatChange);
} else {
// This stream is unaffected by the discontinuity
if (audio) {
mFlushingAudio = FLUSHED;
} else {
mFlushingVideo = FLUSHED;
}
finishFlushIfPossible();
return -EWOULDBLOCK;
}
}
reply->setInt32("err", err);
reply->post();
return OK;
}
if (!audio) {
++mNumFramesTotal;
}
dropAccessUnit = false;
if (!audio
&& mVideoLateByUs > 100000ll
&& mVideoIsAVC
&& !IsAVCReferenceFrame(accessUnit)) {
dropAccessUnit = true;
++mNumFramesDropped;
}
} while (dropAccessUnit);
// ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
#if 0
int64_t mediaTimeUs;
CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
ALOGV("feeding %s input buffer at media time %.2f secs",
audio ? "audio" : "video",
mediaTimeUs / 1E6);
#endif
reply->setBuffer("buffer", accessUnit);
reply->post();
return OK;
}
void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
// ALOGV("renderBuffer %s", audio ? "audio" : "video");
sp<AMessage> reply;
CHECK(msg->findMessage("reply", &reply));
if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
// We're currently attempting to flush the decoder, in order
// to complete this, the decoder wants all its buffers back,
// so we don't want any output buffers it sent us (from before
// we initiated the flush) to be stuck in the renderer's queue.
ALOGV("we're still flushing the %s decoder, sending its output buffer"
" right back.", audio ? "audio" : "video");
reply->post();
return;
}
sp<ABuffer> buffer;
CHECK(msg->findBuffer("buffer", &buffer));
int64_t &skipUntilMediaTimeUs =
audio
? mSkipRenderingAudioUntilMediaTimeUs
: mSkipRenderingVideoUntilMediaTimeUs;
if (skipUntilMediaTimeUs >= 0) {
int64_t mediaTimeUs;
CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
if (mediaTimeUs < skipUntilMediaTimeUs) {
ALOGV("dropping %s buffer at time %lld as requested.",
audio ? "audio" : "video",
mediaTimeUs);
reply->post();
return;
}
skipUntilMediaTimeUs = -1;
}
mRenderer->queueBuffer(audio, buffer, reply);
}
void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
if (mDriver == NULL) {
return;
}
sp<NuPlayerDriver> driver = mDriver.promote();
if (driver == NULL) {
return;
}
driver->notifyListener(msg, ext1, ext2);
}
void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
if ((audio && mAudioDecoder == NULL) || (!audio && mVideoDecoder == NULL)) {
ALOGI("flushDecoder %s without decoder present",
audio ? "audio" : "video");
}
// Make sure we don't continue to scan sources until we finish flushing.
++mScanSourcesGeneration;
mScanSourcesPending = false;
(audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
mRenderer->flush(audio);
FlushStatus newStatus =
needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
if (audio) {
CHECK(mFlushingAudio == NONE
|| mFlushingAudio == AWAITING_DISCONTINUITY);
mFlushingAudio = newStatus;
if (mFlushingVideo == NONE) {
mFlushingVideo = (mVideoDecoder != NULL)
? AWAITING_DISCONTINUITY
: FLUSHED;
}
} else {
CHECK(mFlushingVideo == NONE
|| mFlushingVideo == AWAITING_DISCONTINUITY);
mFlushingVideo = newStatus;
if (mFlushingAudio == NONE) {
mFlushingAudio = (mAudioDecoder != NULL)
? AWAITING_DISCONTINUITY
: FLUSHED;
}
}
}
} // namespace android