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/*
* Copyright 2017 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 "NuPlayer2DecoderPassThrough"
#include <utils/Log.h>
#include <inttypes.h>
#include "NuPlayer2DecoderPassThrough.h"
#include "NuPlayer2Renderer.h"
#include "NuPlayer2Source.h"
#include <media/MediaCodecBuffer.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/MediaErrors.h>
#include "ATSParser.h"
namespace android {
// TODO optimize buffer size for power consumption
// The offload read buffer size is 32 KB but 24 KB uses less power.
static const size_t kAggregateBufferSizeBytes = 24 * 1024;
static const size_t kMaxCachedBytes = 200000;
NuPlayer2::DecoderPassThrough::DecoderPassThrough(
const sp<AMessage> &notify,
const sp<Source> &source,
const sp<Renderer> &renderer)
: DecoderBase(notify),
mSource(source),
mRenderer(renderer),
mSkipRenderingUntilMediaTimeUs(-1ll),
mReachedEOS(true),
mPendingAudioErr(OK),
mPendingBuffersToDrain(0),
mCachedBytes(0),
mComponentName("pass through decoder") {
ALOGW_IF(renderer == NULL, "expect a non-NULL renderer");
}
NuPlayer2::DecoderPassThrough::~DecoderPassThrough() {
}
void NuPlayer2::DecoderPassThrough::onConfigure(const sp<AMessage> &format) {
ALOGV("[%s] onConfigure", mComponentName.c_str());
mCachedBytes = 0;
mPendingBuffersToDrain = 0;
mReachedEOS = false;
++mBufferGeneration;
onRequestInputBuffers();
int32_t hasVideo = 0;
format->findInt32("has-video", &hasVideo);
// The audio sink is already opened before the PassThrough decoder is created.
// Opening again might be relevant if decoder is instantiated after shutdown and
// format is different.
status_t err = mRenderer->openAudioSink(
format, true /* offloadOnly */, hasVideo,
AUDIO_OUTPUT_FLAG_NONE /* flags */, NULL /* isOffloaded */, mSource->isStreaming());
if (err != OK) {
handleError(err);
}
}
void NuPlayer2::DecoderPassThrough::onSetParameters(const sp<AMessage> &/*params*/) {
ALOGW("onSetParameters() called unexpectedly");
}
void NuPlayer2::DecoderPassThrough::onSetRenderer(
const sp<Renderer> &renderer) {
// renderer can't be changed during offloading
ALOGW_IF(renderer != mRenderer,
"ignoring request to change renderer");
}
bool NuPlayer2::DecoderPassThrough::isStaleReply(const sp<AMessage> &msg) {
int32_t generation;
CHECK(msg->findInt32("generation", &generation));
return generation != mBufferGeneration;
}
bool NuPlayer2::DecoderPassThrough::isDoneFetching() const {
ALOGV("[%s] mCachedBytes = %zu, mReachedEOS = %d mPaused = %d",
mComponentName.c_str(), mCachedBytes, mReachedEOS, mPaused);
return mCachedBytes >= kMaxCachedBytes || mReachedEOS || mPaused;
}
/*
* returns true if we should request more data
*/
bool NuPlayer2::DecoderPassThrough::doRequestBuffers() {
status_t err = OK;
while (!isDoneFetching()) {
sp<AMessage> msg = new AMessage();
err = fetchInputData(msg);
if (err != OK) {
break;
}
onInputBufferFetched(msg);
}
return err == -EWOULDBLOCK
&& mSource->feedMoreTSData() == OK;
}
status_t NuPlayer2::DecoderPassThrough::dequeueAccessUnit(sp<ABuffer> *accessUnit) {
status_t err;
// Did we save an accessUnit earlier because of a discontinuity?
if (mPendingAudioAccessUnit != NULL) {
*accessUnit = mPendingAudioAccessUnit;
mPendingAudioAccessUnit.clear();
err = mPendingAudioErr;
ALOGV("feedDecoderInputData() use mPendingAudioAccessUnit");
} else {
err = mSource->dequeueAccessUnit(true /* audio */, accessUnit);
}
if (err == INFO_DISCONTINUITY || err == ERROR_END_OF_STREAM) {
if (mAggregateBuffer != NULL) {
// We already have some data so save this for later.
mPendingAudioErr = err;
mPendingAudioAccessUnit = *accessUnit;
(*accessUnit).clear();
ALOGD("return aggregated buffer and save err(=%d) for later", err);
err = OK;
}
}
return err;
}
sp<ABuffer> NuPlayer2::DecoderPassThrough::aggregateBuffer(
const sp<ABuffer> &accessUnit) {
sp<ABuffer> aggregate;
if (accessUnit == NULL) {
// accessUnit is saved to mPendingAudioAccessUnit
// return current mAggregateBuffer
aggregate = mAggregateBuffer;
mAggregateBuffer.clear();
return aggregate;
}
size_t smallSize = accessUnit->size();
if ((mAggregateBuffer == NULL)
// Don't bother if only room for a few small buffers.
&& (smallSize < (kAggregateBufferSizeBytes / 3))) {
// Create a larger buffer for combining smaller buffers from the extractor.
mAggregateBuffer = new ABuffer(kAggregateBufferSizeBytes);
mAggregateBuffer->setRange(0, 0); // start empty
}
if (mAggregateBuffer != NULL) {
int64_t timeUs;
int64_t dummy;
bool smallTimestampValid = accessUnit->meta()->findInt64("timeUs", &timeUs);
bool bigTimestampValid = mAggregateBuffer->meta()->findInt64("timeUs", &dummy);
// Will the smaller buffer fit?
size_t bigSize = mAggregateBuffer->size();
size_t roomLeft = mAggregateBuffer->capacity() - bigSize;
// Should we save this small buffer for the next big buffer?
// If the first small buffer did not have a timestamp then save
// any buffer that does have a timestamp until the next big buffer.
if ((smallSize > roomLeft)
|| (!bigTimestampValid && (bigSize > 0) && smallTimestampValid)) {
mPendingAudioErr = OK;
mPendingAudioAccessUnit = accessUnit;
aggregate = mAggregateBuffer;
mAggregateBuffer.clear();
} else {
// Grab time from first small buffer if available.
if ((bigSize == 0) && smallTimestampValid) {
mAggregateBuffer->meta()->setInt64("timeUs", timeUs);
}
// Append small buffer to the bigger buffer.
memcpy(mAggregateBuffer->base() + bigSize, accessUnit->data(), smallSize);
bigSize += smallSize;
mAggregateBuffer->setRange(0, bigSize);
ALOGV("feedDecoderInputData() smallSize = %zu, bigSize = %zu, capacity = %zu",
smallSize, bigSize, mAggregateBuffer->capacity());
}
} else {
// decided not to aggregate
aggregate = accessUnit;
}
return aggregate;
}
status_t NuPlayer2::DecoderPassThrough::fetchInputData(sp<AMessage> &reply) {
sp<ABuffer> accessUnit;
do {
status_t err = dequeueAccessUnit(&accessUnit);
if (err == -EWOULDBLOCK) {
// Flush out the aggregate buffer to try to avoid underrun.
accessUnit = aggregateBuffer(NULL /* accessUnit */);
if (accessUnit != NULL) {
break;
}
return err;
} else if (err != OK) {
if (err == INFO_DISCONTINUITY) {
int32_t type;
CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
bool formatChange =
(type & ATSParser::DISCONTINUITY_AUDIO_FORMAT) != 0;
bool timeChange =
(type & ATSParser::DISCONTINUITY_TIME) != 0;
ALOGI("audio discontinuity (formatChange=%d, time=%d)",
formatChange, timeChange);
if (formatChange || timeChange) {
sp<AMessage> msg = mNotify->dup();
msg->setInt32("what", kWhatInputDiscontinuity);
// will perform seamless format change,
// only notify NuPlayer2 to scan sources
msg->setInt32("formatChange", false);
msg->post();
}
if (timeChange) {
doFlush(false /* notifyComplete */);
err = OK;
} else if (formatChange) {
// do seamless format change
err = OK;
} else {
// This stream is unaffected by the discontinuity
return -EWOULDBLOCK;
}
}
reply->setInt32("err", err);
return OK;
}
accessUnit = aggregateBuffer(accessUnit);
} while (accessUnit == NULL);
#if 0
int64_t mediaTimeUs;
CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
ALOGV("feeding audio input buffer at media time %.2f secs",
mediaTimeUs / 1E6);
#endif
reply->setBuffer("buffer", accessUnit);
return OK;
}
void NuPlayer2::DecoderPassThrough::onInputBufferFetched(
const sp<AMessage> &msg) {
if (mReachedEOS) {
return;
}
sp<ABuffer> buffer;
bool hasBuffer = msg->findBuffer("buffer", &buffer);
if (buffer == NULL) {
int32_t streamErr = ERROR_END_OF_STREAM;
CHECK(msg->findInt32("err", &streamErr) || !hasBuffer);
if (streamErr == OK) {
return;
}
if (streamErr != ERROR_END_OF_STREAM) {
handleError(streamErr);
}
mReachedEOS = true;
if (mRenderer != NULL) {
mRenderer->queueEOS(true /* audio */, ERROR_END_OF_STREAM);
}
return;
}
sp<AMessage> extra;
if (buffer->meta()->findMessage("extra", &extra) && extra != NULL) {
int64_t resumeAtMediaTimeUs;
if (extra->findInt64(
"resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
ALOGI("[%s] suppressing rendering until %lld us",
mComponentName.c_str(), (long long)resumeAtMediaTimeUs);
mSkipRenderingUntilMediaTimeUs = resumeAtMediaTimeUs;
}
}
int32_t bufferSize = buffer->size();
mCachedBytes += bufferSize;
int64_t timeUs = 0;
CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
if (mSkipRenderingUntilMediaTimeUs >= 0) {
if (timeUs < mSkipRenderingUntilMediaTimeUs) {
ALOGV("[%s] dropping buffer at time %lld as requested.",
mComponentName.c_str(), (long long)timeUs);
onBufferConsumed(bufferSize);
return;
}
mSkipRenderingUntilMediaTimeUs = -1;
}
if (mRenderer == NULL) {
onBufferConsumed(bufferSize);
return;
}
sp<AMessage> reply = new AMessage(kWhatBufferConsumed, this);
reply->setInt32("generation", mBufferGeneration);
reply->setInt32("size", bufferSize);
sp<MediaCodecBuffer> mcBuffer = new MediaCodecBuffer(nullptr, buffer);
mcBuffer->meta()->setInt64("timeUs", timeUs);
mRenderer->queueBuffer(true /* audio */, mcBuffer, reply);
++mPendingBuffersToDrain;
ALOGV("onInputBufferFilled: #ToDrain = %zu, cachedBytes = %zu",
mPendingBuffersToDrain, mCachedBytes);
}
void NuPlayer2::DecoderPassThrough::onBufferConsumed(int32_t size) {
--mPendingBuffersToDrain;
mCachedBytes -= size;
ALOGV("onBufferConsumed: #ToDrain = %zu, cachedBytes = %zu",
mPendingBuffersToDrain, mCachedBytes);
onRequestInputBuffers();
}
void NuPlayer2::DecoderPassThrough::onResume(bool notifyComplete) {
mPaused = false;
onRequestInputBuffers();
if (notifyComplete) {
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatResumeCompleted);
notify->post();
}
}
void NuPlayer2::DecoderPassThrough::doFlush(bool notifyComplete) {
++mBufferGeneration;
mSkipRenderingUntilMediaTimeUs = -1;
mPendingAudioAccessUnit.clear();
mPendingAudioErr = OK;
mAggregateBuffer.clear();
if (mRenderer != NULL) {
mRenderer->flush(true /* audio */, notifyComplete);
mRenderer->signalTimeDiscontinuity();
}
mPendingBuffersToDrain = 0;
mCachedBytes = 0;
mReachedEOS = false;
}
void NuPlayer2::DecoderPassThrough::onFlush() {
doFlush(true /* notifyComplete */);
mPaused = true;
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatFlushCompleted);
notify->post();
}
void NuPlayer2::DecoderPassThrough::onShutdown(bool notifyComplete) {
++mBufferGeneration;
mSkipRenderingUntilMediaTimeUs = -1;
if (notifyComplete) {
sp<AMessage> notify = mNotify->dup();
notify->setInt32("what", kWhatShutdownCompleted);
notify->post();
}
mReachedEOS = true;
}
void NuPlayer2::DecoderPassThrough::onMessageReceived(const sp<AMessage> &msg) {
ALOGV("[%s] onMessage: %s", mComponentName.c_str(),
msg->debugString().c_str());
switch (msg->what()) {
case kWhatBufferConsumed:
{
if (!isStaleReply(msg)) {
int32_t size;
CHECK(msg->findInt32("size", &size));
onBufferConsumed(size);
}
break;
}
default:
DecoderBase::onMessageReceived(msg);
break;
}
}
} // namespace android