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

1 files changed, 26 insertions, 4 deletions

diff --git a/media/libstagefright/AudioPlayer.cpp b/media/libstagefright/AudioPlayer.cpp
index dd9d393..1ff5d4f 100644
--- a/media/libstagefright/AudioPlayer.cpp
+++ b/media/libstagefright/AudioPlayer.cpp
@@ -54,6 +54,7 @@ AudioPlayer::AudioPlayer(
       mFinalStatus(OK),
       mSeekTimeUs(0),
       mStarted(false),
+      mSourcePaused(false),
       mIsFirstBuffer(false),
       mFirstBufferResult(OK),
       mFirstBuffer(NULL),
@@ -62,7 +63,8 @@ AudioPlayer::AudioPlayer(
       mPinnedTimeUs(-1ll),
       mPlaying(false),
       mStartPosUs(0),
-      mCreateFlags(flags) {
+      mCreateFlags(flags),
+      mPauseRequired(false) {
 }
 
 AudioPlayer::~AudioPlayer() {
@@ -82,6 +84,7 @@ status_t AudioPlayer::start(bool sourceAlreadyStarted) {
 
     status_t err;
     if (!sourceAlreadyStarted) {
+        mSourcePaused = false;
         err = mSource->start();
 
         if (err != OK) {
@@ -257,13 +260,16 @@ status_t AudioPlayer::start(bool sourceAlreadyStarted) {
     mStarted = true;
     mPlaying = true;
     mPinnedTimeUs = -1ll;
-
+    const char *componentName;
+    if (!(format->findCString(kKeyDecoderComponent, &componentName))) {
+          componentName = "none";
+    }
+    mPauseRequired = !strncmp(componentName, "OMX.qcom.", 9);
     return OK;
 }
 
 void AudioPlayer::pause(bool playPendingSamples) {
     CHECK(mStarted);
-
     if (playPendingSamples) {
         if (mAudioSink.get() != NULL) {
             mAudioSink->stop();
@@ -284,10 +290,21 @@ void AudioPlayer::pause(bool playPendingSamples) {
     }
 
     mPlaying = false;
+    CHECK(mSource != NULL);
+    if (mPauseRequired) {
+        if (mSource->pause() == OK) {
+            mSourcePaused = true;
+        }
+    }
 }
 
 status_t AudioPlayer::resume() {
     CHECK(mStarted);
+    CHECK(mSource != NULL);
+    if (mSourcePaused == true) {
+        mSourcePaused = false;
+        mSource->start();
+    }
     status_t err;
 
     if (mAudioSink.get() != NULL) {
@@ -349,7 +366,7 @@ void AudioPlayer::reset() {
         mInputBuffer->release();
         mInputBuffer = NULL;
     }
-
+    mSourcePaused = false;
     mSource->stop();
 
     // The following hack is necessary to ensure that the OMX
@@ -379,6 +396,7 @@ void AudioPlayer::reset() {
     mStarted = false;
     mPlaying = false;
     mStartPosUs = 0;
+    mPauseRequired = false;
 }
 
 // static
@@ -549,6 +567,10 @@ size_t AudioPlayer::fillBuffer(void *data, size_t size) {
                 mIsFirstBuffer = false;
             } else {
                 err = mSource->read(&mInputBuffer, &options);
+                if (err == OK && mInputBuffer == NULL && mSourcePaused) {
+                    ALOGV("mSourcePaused, return 0 from fillBuffer");
+                    return 0;
+                }
             }
 
             CHECK((err == OK && mInputBuffer != NULL)