mediaplayer: ensure secure decoders are instantiated before starting source

Bug: 19984798
Change-Id: Iff13cf03c4ce3141380f4d7ab4a2b1045c5ce747

5 files changed, 111 insertions, 14 deletions

diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.cpp b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
index 9b446b8..1b2fc5e 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
@@ -262,6 +262,12 @@ status_t NuPlayer::GenericSource::initFromDataSource() {
         }
     }
 
+    mBitrate = totalBitrate;
+
+    return OK;
+}
+
+status_t NuPlayer::GenericSource::startSources() {
     // Start the selected A/V tracks now before we start buffering.
     // Widevine sources might re-initialize crypto when starting, if we delay
     // this to start(), all data buffered during prepare would be wasted.
@@ -276,8 +282,6 @@ status_t NuPlayer::GenericSource::initFromDataSource() {
         return UNKNOWN_ERROR;
     }
 
-    mBitrate = totalBitrate;
-
     return OK;
 }
 
@@ -423,6 +427,32 @@ void NuPlayer::GenericSource::onPrepareAsync() {
             | FLAG_CAN_SEEK_FORWARD
             | FLAG_CAN_SEEK);
 
+    if (mIsSecure) {
+        // secure decoders must be instantiated before starting widevine source
+        sp<AMessage> reply = new AMessage(kWhatSecureDecodersInstantiated, id());
+        notifyInstantiateSecureDecoders(reply);
+    } else {
+        finishPrepareAsync();
+    }
+}
+
+void NuPlayer::GenericSource::onSecureDecodersInstantiated(status_t err) {
+    if (err != OK) {
+        ALOGE("Failed to instantiate secure decoders!");
+        notifyPreparedAndCleanup(err);
+        return;
+    }
+    finishPrepareAsync();
+}
+
+void NuPlayer::GenericSource::finishPrepareAsync() {
+    status_t err = startSources();
+    if (err != OK) {
+        ALOGE("Failed to init start data source!");
+        notifyPreparedAndCleanup(err);
+        return;
+    }
+
     if (mIsStreaming) {
         mPrepareBuffering = true;
 
@@ -441,6 +471,7 @@ void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
         mDataSource.clear();
         mCachedSource.clear();
         mHttpSource.clear();
+        mBitrate = -1;
 
         cancelPollBuffering();
     }
@@ -870,6 +901,14 @@ void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
           break;
       }
 
+      case kWhatSecureDecodersInstantiated:
+      {
+          int32_t err;
+          CHECK(msg->findInt32("err", &err));
+          onSecureDecodersInstantiated(err);
+          break;
+      }
+
       case kWhatStopWidevine:
       {
           // mStopRead is only used for Widevine to prevent the video source
diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.h b/media/libmediaplayerservice/nuplayer/GenericSource.h
index 385d73a..2d73ea9 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.h
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.h
@@ -96,6 +96,7 @@ private:
         kWhatStopWidevine,
         kWhatStart,
         kWhatResume,
+        kWhatSecureDecodersInstantiated,
     };
 
     struct Track {
@@ -161,6 +162,9 @@ private:
     status_t prefillCacheIfNecessary();
 
     void notifyPreparedAndCleanup(status_t err);
+    void onSecureDecodersInstantiated(status_t err);
+    void finishPrepareAsync();
+    status_t startSources();
 
     void onGetFormatMeta(sp<AMessage> msg) const;
     sp<MetaData> doGetFormatMeta(bool audio) const;
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index fb8dbce..aeea204 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -1004,22 +1004,40 @@ void NuPlayer::onResume() {
     }
 }
 
-void NuPlayer::onStart() {
-    mOffloadAudio = false;
-    mAudioEOS = false;
-    mVideoEOS = false;
-    mStarted = true;
+status_t NuPlayer::onInstantiateSecureDecoders() {
+    status_t err;
+    if (!(mSourceFlags & Source::FLAG_SECURE)) {
+        return BAD_TYPE;
+    }
 
-    /* instantiate decoders now for secure playback */
-    if (mSourceFlags & Source::FLAG_SECURE) {
-        if (mNativeWindow != NULL) {
-            instantiateDecoder(false, &mVideoDecoder);
+    if (mRenderer != NULL) {
+        ALOGE("renderer should not be set when instantiating secure decoders");
+        return UNKNOWN_ERROR;
+    }
+
+    // TRICKY: We rely on mRenderer being null, so that decoder does not start requesting
+    // data on instantiation.
+    if (mNativeWindow != NULL) {
+        err = instantiateDecoder(false, &mVideoDecoder);
+        if (err != OK) {
+            return err;
         }
+    }
 
-        if (mAudioSink != NULL) {
-            instantiateDecoder(true, &mAudioDecoder);
+    if (mAudioSink != NULL) {
+        err = instantiateDecoder(true, &mAudioDecoder);
+        if (err != OK) {
+            return err;
         }
     }
+    return OK;
+}
+
+void NuPlayer::onStart() {
+    mOffloadAudio = false;
+    mAudioEOS = false;
+    mVideoEOS = false;
+    mStarted = true;
 
     mSource->start();
 
@@ -1371,7 +1389,7 @@ void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
     FlushStatus newStatus =
         needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
 
-    mFlushComplete[audio][false /* isDecoder */] = false;
+    mFlushComplete[audio][false /* isDecoder */] = (mRenderer == NULL);
     mFlushComplete[audio][true /* isDecoder */] = false;
     if (audio) {
         ALOGE_IF(mFlushingAudio != NONE,
@@ -1656,6 +1674,23 @@ void NuPlayer::onSourceNotify(const sp<AMessage> &msg) {
     CHECK(msg->findInt32("what", &what));
 
     switch (what) {
+        case Source::kWhatInstantiateSecureDecoders:
+        {
+            if (mSource == NULL) {
+                // This is a stale notification from a source that was
+                // asynchronously preparing when the client called reset().
+                // We handled the reset, the source is gone.
+                break;
+            }
+
+            sp<AMessage> reply;
+            CHECK(msg->findMessage("reply", &reply));
+            status_t err = onInstantiateSecureDecoders();
+            reply->setInt32("err", err);
+            reply->post();
+            break;
+        }
+
         case Source::kWhatPrepared:
         {
             if (mSource == NULL) {
@@ -1668,6 +1703,14 @@ void NuPlayer::onSourceNotify(const sp<AMessage> &msg) {
             int32_t err;
             CHECK(msg->findInt32("err", &err));
 
+            if (err != OK) {
+                // shut down potential secure codecs in case client never calls reset
+                mDeferredActions.push_back(
+                        new FlushDecoderAction(FLUSH_CMD_SHUTDOWN /* audio */,
+                                               FLUSH_CMD_SHUTDOWN /* video */));
+                processDeferredActions();
+            }
+
             sp<NuPlayerDriver> driver = mDriver.promote();
             if (driver != NULL) {
                 // notify duration first, so that it's definitely set when
@@ -1952,6 +1995,13 @@ void NuPlayer::Source::notifyPrepared(status_t err) {
     notify->post();
 }
 
+void NuPlayer::Source::notifyInstantiateSecureDecoders(const sp<AMessage> &reply) {
+    sp<AMessage> notify = dupNotify();
+    notify->setInt32("what", kWhatInstantiateSecureDecoders);
+    notify->setMessage("reply", reply);
+    notify->post();
+}
+
 void NuPlayer::Source::onMessageReceived(const sp<AMessage> & /* msg */) {
     TRESPASS();
 }
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.h b/media/libmediaplayerservice/nuplayer/NuPlayer.h
index edc2bd3..e99e598 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.h
@@ -201,6 +201,8 @@ private:
 
     status_t instantiateDecoder(bool audio, sp<DecoderBase> *decoder);
 
+    status_t onInstantiateSecureDecoders();
+
     void updateVideoSize(
             const sp<AMessage> &inputFormat,
             const sp<AMessage> &outputFormat = NULL);
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index 8f18464..6daad1b 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -56,6 +56,7 @@ struct NuPlayer::Source : public AHandler {
         kWhatTimedTextData,
         kWhatQueueDecoderShutdown,
         kWhatDrmNoLicense,
+        kWhatInstantiateSecureDecoders,
     };
 
     // The provides message is used to notify the player about various
@@ -126,6 +127,7 @@ protected:
 
     void notifyFlagsChanged(uint32_t flags);
     void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
+    void notifyInstantiateSecureDecoders(const sp<AMessage> &reply);
     void notifyPrepared(status_t err = OK);
 
 private: