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author | Andreas Huber <andih@google.com> | 2010-09-15 16:20:42 -0700 |
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committer | Andreas Huber <andih@google.com> | 2010-09-16 09:44:40 -0700 |
commit | aae3516293e58c0b015d4109bde58c11d503433c (patch) | |
tree | 71b773f376b9b1f630cad001ac82ac9f86353408 /media | |
parent | 70fb57d15b829e3f20224727311f945e3bb13f3b (diff) | |
download | frameworks_av-aae3516293e58c0b015d4109bde58c11d503433c.zip frameworks_av-aae3516293e58c0b015d4109bde58c11d503433c.tar.gz frameworks_av-aae3516293e58c0b015d4109bde58c11d503433c.tar.bz2 |
A ThreadedSource wraps around an existing MediaSource and reads output buffers on a separate thread. It's now used for the vpx decoder to decode frames ahead of time to improve playback performance.
Change-Id: I57a798b00adeb2c8056e85aab29a2b57aef00b63
Diffstat (limited to 'media')
-rw-r--r-- | media/libstagefright/Android.mk | 1 | ||||
-rw-r--r-- | media/libstagefright/OMXCodec.cpp | 6 | ||||
-rw-r--r-- | media/libstagefright/ThreadedSource.cpp | 209 | ||||
-rw-r--r-- | media/libstagefright/include/ThreadedSource.h | 73 |
4 files changed, 289 insertions, 0 deletions
diff --git a/media/libstagefright/Android.mk b/media/libstagefright/Android.mk index 86fa668..e0321a5 100644 --- a/media/libstagefright/Android.mk +++ b/media/libstagefright/Android.mk @@ -34,6 +34,7 @@ LOCAL_SRC_FILES:= \ ShoutcastSource.cpp \ StagefrightMediaScanner.cpp \ StagefrightMetadataRetriever.cpp \ + ThreadedSource.cpp \ ThrottledSource.cpp \ TimeSource.cpp \ TimedEventQueue.cpp \ diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp index fd23b61..3d25a4b 100644 --- a/media/libstagefright/OMXCodec.cpp +++ b/media/libstagefright/OMXCodec.cpp @@ -52,6 +52,8 @@ #include <OMX_Audio.h> #include <OMX_Component.h> +#include "include/ThreadedSource.h" + namespace android { static const int OMX_QCOM_COLOR_FormatYVU420SemiPlanar = 0x7FA30C00; @@ -134,6 +136,10 @@ static sp<MediaSource> InstantiateSoftwareCodec( for (size_t i = 0; i < sizeof(kFactoryInfo) / sizeof(kFactoryInfo[0]); ++i) { if (!strcmp(name, kFactoryInfo[i].name)) { + if (!strcmp(name, "VPXDecoder")) { + return new ThreadedSource( + (*kFactoryInfo[i].CreateFunc)(source)); + } return (*kFactoryInfo[i].CreateFunc)(source); } } diff --git a/media/libstagefright/ThreadedSource.cpp b/media/libstagefright/ThreadedSource.cpp new file mode 100644 index 0000000..5add2a5 --- /dev/null +++ b/media/libstagefright/ThreadedSource.cpp @@ -0,0 +1,209 @@ +/* + * 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. + */ + +#include "include/ThreadedSource.h" + +#include <media/stagefright/foundation/ADebug.h> +#include <media/stagefright/foundation/AMessage.h> +#include <media/stagefright/MediaBuffer.h> +#include <media/stagefright/MetaData.h> + +namespace android { + +static const size_t kMaxQueueSize = 2; + +ThreadedSource::ThreadedSource(const sp<MediaSource> &source) + : mSource(source), + mReflector(new AHandlerReflector<ThreadedSource>(this)), + mLooper(new ALooper), + mStarted(false) { + mLooper->registerHandler(mReflector); +} + +ThreadedSource::~ThreadedSource() { + if (mStarted) { + stop(); + } +} + +status_t ThreadedSource::start(MetaData *params) { + CHECK(!mStarted); + + status_t err = mSource->start(params); + + if (err != OK) { + return err; + } + + mFinalResult = OK; + mSeekTimeUs = -1; + mDecodePending = false; + + Mutex::Autolock autoLock(mLock); + postDecodeMore_l(); + + CHECK_EQ(mLooper->start(), (status_t)OK); + + mStarted = true; + + return OK; +} + +status_t ThreadedSource::stop() { + CHECK(mStarted); + + CHECK_EQ(mLooper->stop(), (status_t)OK); + + Mutex::Autolock autoLock(mLock); + clearQueue_l(); + + status_t err = mSource->stop(); + + mStarted = false; + + return err; +} + +sp<MetaData> ThreadedSource::getFormat() { + return mSource->getFormat(); +} + +status_t ThreadedSource::read( + MediaBuffer **buffer, const ReadOptions *options) { + *buffer = NULL; + + Mutex::Autolock autoLock(mLock); + + int64_t seekTimeUs; + ReadOptions::SeekMode seekMode; + if (options && options->getSeekTo(&seekTimeUs, &seekMode)) { + int32_t seekComplete = 0; + + sp<AMessage> msg = new AMessage(kWhatSeek, mReflector->id()); + msg->setInt64("timeUs", seekTimeUs); + msg->setInt32("mode", seekMode); + msg->setPointer("complete", &seekComplete); + msg->post(); + + while (!seekComplete) { + mCondition.wait(mLock); + } + } + + while (mQueue.empty() && mFinalResult == OK) { + mCondition.wait(mLock); + } + + if (!mQueue.empty()) { + *buffer = *mQueue.begin(); + mQueue.erase(mQueue.begin()); + + if (mFinalResult == OK) { + postDecodeMore_l(); + } + + return OK; + } + + return mFinalResult; +} + +void ThreadedSource::onMessageReceived(const sp<AMessage> &msg) { + switch (msg->what()) { + case kWhatSeek: + { + CHECK(msg->findInt64("timeUs", &mSeekTimeUs)); + CHECK_GE(mSeekTimeUs, 0ll); + + int32_t x; + CHECK(msg->findInt32("mode", &x)); + mSeekMode = (ReadOptions::SeekMode)x; + + int32_t *seekComplete; + CHECK(msg->findPointer("complete", (void **)&seekComplete)); + + Mutex::Autolock autoLock(mLock); + clearQueue_l(); + mFinalResult = OK; + + *seekComplete = 1; + mCondition.signal(); + + postDecodeMore_l(); + break; + } + + case kWhatDecodeMore: + { + { + Mutex::Autolock autoLock(mLock); + mDecodePending = false; + + if (mQueue.size() == kMaxQueueSize) { + break; + } + } + + MediaBuffer *buffer; + ReadOptions options; + if (mSeekTimeUs >= 0) { + options.setSeekTo(mSeekTimeUs, mSeekMode); + mSeekTimeUs = -1ll; + } + status_t err = mSource->read(&buffer, &options); + + Mutex::Autolock autoLock(mLock); + + if (err != OK) { + mFinalResult = err; + } else { + mQueue.push_back(buffer); + + if (mQueue.size() < kMaxQueueSize) { + postDecodeMore_l(); + } + } + + mCondition.signal(); + break; + } + + default: + TRESPASS(); + break; + } +} + +void ThreadedSource::postDecodeMore_l() { + if (mDecodePending) { + return; + } + + mDecodePending = true; + (new AMessage(kWhatDecodeMore, mReflector->id()))->post(); +} + +void ThreadedSource::clearQueue_l() { + while (!mQueue.empty()) { + MediaBuffer *buffer = *mQueue.begin(); + mQueue.erase(mQueue.begin()); + + buffer->release(); + buffer = NULL; + } +} + +} // namespace android diff --git a/media/libstagefright/include/ThreadedSource.h b/media/libstagefright/include/ThreadedSource.h new file mode 100644 index 0000000..c67295c --- /dev/null +++ b/media/libstagefright/include/ThreadedSource.h @@ -0,0 +1,73 @@ +/* + * 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. + */ + +#ifndef THREADED_SOURCE_H_ + +#define THREADED_SOURCE_H_ + +#include <media/stagefright/foundation/ABase.h> +#include <media/stagefright/foundation/AHandlerReflector.h> +#include <media/stagefright/foundation/ALooper.h> +#include <media/stagefright/MediaSource.h> +#include <utils/threads.h> + +namespace android { + +struct ThreadedSource : public MediaSource { + ThreadedSource(const sp<MediaSource> &source); + + virtual status_t start(MetaData *params); + virtual status_t stop(); + + virtual sp<MetaData> getFormat(); + + virtual status_t read( + MediaBuffer **buffer, const ReadOptions *options); + + virtual void onMessageReceived(const sp<AMessage> &msg); + +protected: + virtual ~ThreadedSource(); + +private: + enum { + kWhatDecodeMore = 'deco', + kWhatSeek = 'seek', + }; + + sp<MediaSource> mSource; + sp<AHandlerReflector<ThreadedSource> > mReflector; + sp<ALooper> mLooper; + + Mutex mLock; + Condition mCondition; + List<MediaBuffer *> mQueue; + status_t mFinalResult; + bool mDecodePending; + bool mStarted; + + int64_t mSeekTimeUs; + ReadOptions::SeekMode mSeekMode; + + void postDecodeMore_l(); + void clearQueue_l(); + + DISALLOW_EVIL_CONSTRUCTORS(ThreadedSource); +}; + +} // namespace android + +#endif // THREADED_SOURCE_H_ |