stagefright: Squashed commit of pause/resume features

Add 2 APIs (suspend/resume) in MediaPlayer

- API:suspend() will just pause the player and release all the decoders
  to replace release() which will release the whole player
- API:resume() will just init the decoders again,
  then start() will be called to restart streaming playback
- Add a check in AwesomePlayer::onVideoEvent()
  to make sure the first seek operation will always seek to the next
  i-frame

Change-Id: Ie4c82906a2a056378119921a656128ebdc1007c4

audio: Add pause support for hardware omx component

- ADSP doesn't enter sleep state after wma playback is paused
  and power suspended.
- No support for NT session pause in case of hardware component.
  NT session need to be paused to put ADSP into power collapse.
- Add support of pause in stagefright to ensure device enters
  suspend mode. Also add intermediate states to avoid concurrency
  issues between read and pause.

Change-Id: I41b946b8c8805e6ee303646b63513b5b16514ef6

libstagefright: Drain input buffer on resume

- Buffers returned from codec in paused state are not drained. When
codec is resumed these buffers are not drained until the next flush,
and may cause timed out issue.
- Added change to drain input buffers for sw decoders when resuming.

Change-Id: Ida2ab1d5dc3a1910accdd6fb89548262a912d8e7
CRs-Fixed: 569585, 574967

libstagefright: camcorder pause-resume implementation

- Add pause resume feature in camcorder app. So that
  user can pause recording and resume later which results
  in a single recorded clip.

Change-Id: Id19c45ae5bb85265aa4d5304b160ebf119d9575a

libstagefright: support pause/resume for timelapse recording

  Modify the timestamp calculation mechanism in CameraSourceTimeLapse
  in order to support pause/resume.

Change-Id: Icb02ea798b0b807ffb7ada2d1ef5b2414b74edfb

11 files changed, 46 insertions, 3 deletions

diff --git a/include/media/IMediaPlayer.h b/include/media/IMediaPlayer.h
index 0fd8933..5957535 100644
--- a/include/media/IMediaPlayer.h
+++ b/include/media/IMediaPlayer.h
@@ -109,6 +109,16 @@ public:
     virtual status_t        getMetadata(bool update_only,
                                         bool apply_filter,
                                         Parcel *metadata) = 0;
+
+    // Suspend the video player
+    // In other words, just release the audio decoder and the video decoder
+    // @return OK if the video player was suspended successfully
+    virtual status_t        suspend() = 0;
+
+    // Resume the video player
+    // Init the audio decoder and the video decoder
+    // @return OK if the video player was resumed successfully
+    virtual status_t        resume() = 0;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/media/IMediaRecorder.h b/include/media/IMediaRecorder.h
index 77ed5d3..339bd9e 100644
--- a/include/media/IMediaRecorder.h
+++ b/include/media/IMediaRecorder.h
@@ -51,6 +51,7 @@ public:
     virtual status_t prepare() = 0;
     virtual status_t getMaxAmplitude(int* max) = 0;
     virtual status_t start() = 0;
+    virtual status_t pause() = 0;
     virtual status_t stop() = 0;
     virtual status_t reset() = 0;
     virtual status_t init() = 0;
diff --git a/include/media/MediaPlayerInterface.h b/include/media/MediaPlayerInterface.h
index 745151b..4810b7e 100644
--- a/include/media/MediaPlayerInterface.h
+++ b/include/media/MediaPlayerInterface.h
@@ -267,6 +267,14 @@ public:
         return INVALID_OPERATION;
     }
 
+    virtual status_t suspend() {
+        return INVALID_OPERATION;
+    }
+
+    virtual status_t resume() {
+        return INVALID_OPERATION;
+    }
+
 private:
     friend class MediaPlayerService;
 
diff --git a/include/media/MediaRecorderBase.h b/include/media/MediaRecorderBase.h
index d6cc4bb..48d8b70 100644
--- a/include/media/MediaRecorderBase.h
+++ b/include/media/MediaRecorderBase.h
@@ -53,6 +53,7 @@ struct MediaRecorderBase {
     virtual status_t prepare() = 0;
     virtual status_t start() = 0;
     virtual status_t stop() = 0;
+    virtual status_t pause() = 0;
     virtual status_t close() = 0;
     virtual status_t reset() = 0;
     virtual status_t getMaxAmplitude(int *max) = 0;
diff --git a/include/media/mediaplayer.h b/include/media/mediaplayer.h
index 1f6ddad..3d4a6e2 100644
--- a/include/media/mediaplayer.h
+++ b/include/media/mediaplayer.h
@@ -147,7 +147,8 @@ enum media_player_states {
     MEDIA_PLAYER_STARTED            = 1 << 4,
     MEDIA_PLAYER_PAUSED             = 1 << 5,
     MEDIA_PLAYER_STOPPED            = 1 << 6,
-    MEDIA_PLAYER_PLAYBACK_COMPLETE  = 1 << 7
+    MEDIA_PLAYER_PLAYBACK_COMPLETE  = 1 << 7,
+    MEDIA_PLAYER_SUSPENDED          = 1 << 8
 };
 
 // Keep KEY_PARAMETER_* in sync with MediaPlayer.java.
@@ -255,6 +256,8 @@ public:
             status_t        getParameter(int key, Parcel* reply);
             status_t        setRetransmitEndpoint(const char* addrString, uint16_t port);
             status_t        setNextMediaPlayer(const sp<MediaPlayer>& player);
+            status_t        suspend();
+            status_t        resume();
 
 private:
             void            clear_l();
diff --git a/include/media/mediarecorder.h b/include/media/mediarecorder.h
index 93b5d67..96c84bb 100755
--- a/include/media/mediarecorder.h
+++ b/include/media/mediarecorder.h
@@ -134,6 +134,9 @@ enum media_recorder_states {
 
     // Recording is in progress.
     MEDIA_RECORDER_RECORDING             = 1 << 4,
+
+    // Recording is paused.
+    MEDIA_RECORDER_PAUSED                = 1 << 5,
 };
 
 // The "msg" code passed to the listener in notify.
@@ -246,6 +249,7 @@ public:
     status_t    getMaxAmplitude(int* max);
     virtual status_t    start();
     virtual status_t    stop();
+    virtual status_t    pause();
     status_t    reset();
     status_t    init();
     status_t    close();
diff --git a/include/media/stagefright/AudioPlayer.h b/include/media/stagefright/AudioPlayer.h
index e0cd965..edc9f25 100644
--- a/include/media/stagefright/AudioPlayer.h
+++ b/include/media/stagefright/AudioPlayer.h
@@ -103,6 +103,7 @@ private:
     int64_t mSeekTimeUs;
 
     bool mStarted;
+    bool mSourcePaused;
 
     bool mIsFirstBuffer;
     status_t mFirstBufferResult;
@@ -115,6 +116,7 @@ private:
     bool mPlaying;
     int64_t mStartPosUs;
     const uint32_t mCreateFlags;
+    bool mPauseRequired;
 
     static void AudioCallback(int event, void *user, void *info);
     void AudioCallback(int event, void *info);
diff --git a/include/media/stagefright/AudioSource.h b/include/media/stagefright/AudioSource.h
index 9750bcd..e48765e 100644
--- a/include/media/stagefright/AudioSource.h
+++ b/include/media/stagefright/AudioSource.h
@@ -46,7 +46,7 @@ struct AudioSource : public MediaSource, public MediaBufferObserver {
     virtual status_t stop() { return reset(); }
     virtual sp<MetaData> getFormat();
 
-    virtual status_t pause() { return ERROR_UNSUPPORTED; }
+    virtual status_t pause();
 
     // Returns the maximum amplitude since last call.
     int16_t getMaxAmplitude();
@@ -94,6 +94,8 @@ protected:
     int64_t mNumFramesReceived;
     int64_t mNumClientOwnedBuffers;
 
+    bool mRecPaused;
+
     List<MediaBuffer * > mBuffersReceived;
 
     void trackMaxAmplitude(int16_t *data, int nSamples);
diff --git a/include/media/stagefright/CameraSource.h b/include/media/stagefright/CameraSource.h
index 527ee15..70149cc 100644
--- a/include/media/stagefright/CameraSource.h
+++ b/include/media/stagefright/CameraSource.h
@@ -92,7 +92,7 @@ public:
     virtual status_t read(
             MediaBuffer **buffer, const ReadOptions *options = NULL);
 
-    virtual status_t pause() { return ERROR_UNSUPPORTED; }
+    virtual status_t pause();
 
     /**
      * Check whether a CameraSource object is properly initialized.
@@ -208,6 +208,11 @@ protected:
     bool mCollectStats;
     bool mIsMetaDataStoredInVideoBuffers;
 
+    int64_t  mPauseAdjTimeUs;
+    int64_t  mPauseStartTimeUs;
+    int64_t  mPauseEndTimeUs;
+    bool mRecPause;
+
     void releaseQueuedFrames();
     void releaseOneRecordingFrame(const sp<IMemory>& frame);
 
diff --git a/include/media/stagefright/CameraSourceTimeLapse.h b/include/media/stagefright/CameraSourceTimeLapse.h
index f264d98..eeb453f 100644
--- a/include/media/stagefright/CameraSourceTimeLapse.h
+++ b/include/media/stagefright/CameraSourceTimeLapse.h
@@ -67,6 +67,9 @@ protected:
 
     // Real timestamp of the last encoded time lapse frame
     int64_t mLastTimeLapseFrameRealTimestampUs;
+    // Adjusted continuous timestamp based on recording fps
+    // of the last encoded time lapse frame
+    int64_t mLastTimeLapseFrameTimeStampUs;
 
     // Variable set in dataCallbackTimestamp() to help skipCurrentFrame()
     // to know if current frame needs to be skipped.
diff --git a/include/media/stagefright/OMXCodec.h b/include/media/stagefright/OMXCodec.h
index 7fabcb3..ea534e0 100644
--- a/include/media/stagefright/OMXCodec.h
+++ b/include/media/stagefright/OMXCodec.h
@@ -139,6 +139,9 @@ private:
         EXECUTING_TO_IDLE,
         IDLE_TO_LOADED,
         RECONFIGURING,
+        PAUSING,
+        FLUSHING,
+        PAUSED,
         ERROR
     };
 
@@ -348,6 +351,7 @@ private:
 
     status_t waitForBufferFilled_l();
 
+    status_t resumeLocked(bool drainInputBuf);
     int64_t getDecodingTimeUs();
 
     status_t parseHEVCCodecSpecificData(