| /* |
| * Copyright (C) 2009 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 "AudioPlayer" |
| #include <utils/Log.h> |
| |
| #include <media/AudioTrack.h> |
| #include <media/stagefright/AudioPlayer.h> |
| #include <media/stagefright/MediaDebug.h> |
| #include <media/stagefright/MediaDefs.h> |
| #include <media/stagefright/MediaSource.h> |
| #include <media/stagefright/MetaData.h> |
| |
| namespace android { |
| |
| AudioPlayer::AudioPlayer(const sp<MediaPlayerBase::AudioSink> &audioSink) |
| : mAudioTrack(NULL), |
| mInputBuffer(NULL), |
| mSampleRate(0), |
| mLatencyUs(0), |
| mFrameSize(0), |
| mNumFramesPlayed(0), |
| mPositionTimeMediaUs(-1), |
| mPositionTimeRealUs(-1), |
| mSeeking(false), |
| mStarted(false), |
| mAudioSink(audioSink) { |
| } |
| |
| AudioPlayer::~AudioPlayer() { |
| if (mStarted) { |
| stop(); |
| } |
| } |
| |
| void AudioPlayer::setSource(const sp<MediaSource> &source) { |
| CHECK_EQ(mSource, NULL); |
| mSource = source; |
| } |
| |
| void AudioPlayer::start() { |
| CHECK(!mStarted); |
| CHECK(mSource != NULL); |
| |
| status_t err = mSource->start(); |
| CHECK_EQ(err, OK); |
| |
| sp<MetaData> format = mSource->getFormat(); |
| const char *mime; |
| bool success = format->findCString(kKeyMIMEType, &mime); |
| CHECK(success); |
| CHECK(!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_RAW)); |
| |
| success = format->findInt32(kKeySampleRate, &mSampleRate); |
| CHECK(success); |
| |
| int32_t numChannels; |
| success = format->findInt32(kKeyChannelCount, &numChannels); |
| CHECK(success); |
| |
| if (mAudioSink.get() != NULL) { |
| status_t err = mAudioSink->open( |
| mSampleRate, numChannels, AudioSystem::PCM_16_BIT, |
| DEFAULT_AUDIOSINK_BUFFERCOUNT, |
| &AudioPlayer::AudioSinkCallback, this); |
| CHECK_EQ(err, OK); |
| |
| mLatencyUs = (int64_t)mAudioSink->latency() * 1000; |
| mFrameSize = mAudioSink->frameSize(); |
| |
| mAudioSink->start(); |
| } else { |
| mAudioTrack = new AudioTrack( |
| AudioSystem::MUSIC, mSampleRate, AudioSystem::PCM_16_BIT, |
| (numChannels == 2) |
| ? AudioSystem::CHANNEL_OUT_STEREO |
| : AudioSystem::CHANNEL_OUT_MONO, |
| 8192, 0, &AudioCallback, this, 0); |
| |
| CHECK_EQ(mAudioTrack->initCheck(), OK); |
| |
| mLatencyUs = (int64_t)mAudioTrack->latency() * 1000; |
| mFrameSize = mAudioTrack->frameSize(); |
| |
| mAudioTrack->start(); |
| } |
| |
| mStarted = true; |
| } |
| |
| void AudioPlayer::pause() { |
| CHECK(mStarted); |
| |
| if (mAudioSink.get() != NULL) { |
| mAudioSink->pause(); |
| } else { |
| mAudioTrack->stop(); |
| } |
| } |
| |
| void AudioPlayer::resume() { |
| CHECK(mStarted); |
| |
| if (mAudioSink.get() != NULL) { |
| mAudioSink->start(); |
| } else { |
| mAudioTrack->start(); |
| } |
| } |
| |
| void AudioPlayer::stop() { |
| CHECK(mStarted); |
| |
| if (mAudioSink.get() != NULL) { |
| mAudioSink->stop(); |
| } else { |
| mAudioTrack->stop(); |
| |
| delete mAudioTrack; |
| mAudioTrack = NULL; |
| } |
| |
| // Make sure to release any buffer we hold onto so that the |
| // source is able to stop(). |
| if (mInputBuffer != NULL) { |
| LOGV("AudioPlayer releasing input buffer."); |
| |
| mInputBuffer->release(); |
| mInputBuffer = NULL; |
| } |
| |
| mSource->stop(); |
| |
| mNumFramesPlayed = 0; |
| mPositionTimeMediaUs = -1; |
| mPositionTimeRealUs = -1; |
| mSeeking = false; |
| mStarted = false; |
| } |
| |
| // static |
| void AudioPlayer::AudioCallback(int event, void *user, void *info) { |
| static_cast<AudioPlayer *>(user)->AudioCallback(event, info); |
| } |
| |
| // static |
| void AudioPlayer::AudioSinkCallback( |
| MediaPlayerBase::AudioSink *audioSink, |
| void *buffer, size_t size, void *cookie) { |
| AudioPlayer *me = (AudioPlayer *)cookie; |
| |
| me->fillBuffer(buffer, size); |
| } |
| |
| void AudioPlayer::AudioCallback(int event, void *info) { |
| if (event != AudioTrack::EVENT_MORE_DATA) { |
| return; |
| } |
| |
| AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info; |
| fillBuffer(buffer->raw, buffer->size); |
| } |
| |
| void AudioPlayer::fillBuffer(void *data, size_t size) { |
| if (mNumFramesPlayed == 0) { |
| LOGV("AudioCallback"); |
| } |
| |
| size_t size_done = 0; |
| size_t size_remaining = size; |
| while (size_remaining > 0) { |
| MediaSource::ReadOptions options; |
| |
| { |
| Mutex::Autolock autoLock(mLock); |
| |
| if (mSeeking) { |
| options.setSeekTo(mSeekTimeUs); |
| |
| if (mInputBuffer != NULL) { |
| mInputBuffer->release(); |
| mInputBuffer = NULL; |
| } |
| mSeeking = false; |
| } |
| } |
| |
| if (mInputBuffer == NULL) { |
| status_t err = mSource->read(&mInputBuffer, &options); |
| |
| CHECK((err == OK && mInputBuffer != NULL) |
| || (err != OK && mInputBuffer == NULL)); |
| |
| if (err != OK) { |
| memset((char *)data + size_done, 0, size_remaining); |
| break; |
| } |
| |
| Mutex::Autolock autoLock(mLock); |
| CHECK(mInputBuffer->meta_data()->findInt64( |
| kKeyTime, &mPositionTimeMediaUs)); |
| |
| mPositionTimeRealUs = |
| ((mNumFramesPlayed + size_done / mFrameSize) * 1000000) |
| / mSampleRate; |
| |
| LOGV("buffer->size() = %d, " |
| "mPositionTimeMediaUs=%.2f mPositionTimeRealUs=%.2f", |
| mInputBuffer->range_length(), |
| mPositionTimeMediaUs / 1E6, mPositionTimeRealUs / 1E6); |
| } |
| |
| if (mInputBuffer->range_length() == 0) { |
| mInputBuffer->release(); |
| mInputBuffer = NULL; |
| |
| continue; |
| } |
| |
| size_t copy = size_remaining; |
| if (copy > mInputBuffer->range_length()) { |
| copy = mInputBuffer->range_length(); |
| } |
| |
| memcpy((char *)data + size_done, |
| (const char *)mInputBuffer->data() + mInputBuffer->range_offset(), |
| copy); |
| |
| mInputBuffer->set_range(mInputBuffer->range_offset() + copy, |
| mInputBuffer->range_length() - copy); |
| |
| size_done += copy; |
| size_remaining -= copy; |
| } |
| |
| Mutex::Autolock autoLock(mLock); |
| mNumFramesPlayed += size / mFrameSize; |
| } |
| |
| int64_t AudioPlayer::getRealTimeUs() { |
| Mutex::Autolock autoLock(mLock); |
| return getRealTimeUsLocked(); |
| } |
| |
| int64_t AudioPlayer::getRealTimeUsLocked() const { |
| return -mLatencyUs + (mNumFramesPlayed * 1000000) / mSampleRate; |
| } |
| |
| int64_t AudioPlayer::getMediaTimeUs() { |
| Mutex::Autolock autoLock(mLock); |
| |
| return mPositionTimeMediaUs + (getRealTimeUsLocked() - mPositionTimeRealUs); |
| } |
| |
| bool AudioPlayer::getMediaTimeMapping( |
| int64_t *realtime_us, int64_t *mediatime_us) { |
| Mutex::Autolock autoLock(mLock); |
| |
| *realtime_us = mPositionTimeRealUs; |
| *mediatime_us = mPositionTimeMediaUs; |
| |
| return mPositionTimeRealUs != -1 || mPositionTimeMediaUs != -1; |
| } |
| |
| status_t AudioPlayer::seekTo(int64_t time_us) { |
| Mutex::Autolock autoLock(mLock); |
| |
| mSeeking = true; |
| mSeekTimeUs = time_us; |
| |
| return OK; |
| } |
| |
| } |