Properly flush the AudioTrack/AudioSink on a seek request and make sure that both the mp3 decoder and aac software decoders start fresh after a seek without any dependency on previously decoded content.

Change-Id: I4909fdf19518dbabb6c340e2a31b50dfe6c5b067
related-to-bug: 3029947

3 files changed, 14 insertions, 0 deletions

diff --git a/media/libstagefright/AudioPlayer.cpp b/media/libstagefright/AudioPlayer.cpp
index 47a385d..b314114 100644
--- a/media/libstagefright/AudioPlayer.cpp
+++ b/media/libstagefright/AudioPlayer.cpp
@@ -423,6 +423,12 @@ status_t AudioPlayer::seekTo(int64_t time_us) {
     mReachedEOS = false;
     mSeekTimeUs = time_us;
 
+    if (mAudioSink != NULL) {
+        mAudioSink->flush();
+    } else {
+        mAudioTrack->flush();
+    }
+
     return OK;
 }
 
diff --git a/media/libstagefright/codecs/aacdec/AACDecoder.cpp b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
index e4ed5e6..f58c16d 100644
--- a/media/libstagefright/codecs/aacdec/AACDecoder.cpp
+++ b/media/libstagefright/codecs/aacdec/AACDecoder.cpp
@@ -171,6 +171,10 @@ status_t AACDecoder::read(
             mInputBuffer->release();
             mInputBuffer = NULL;
         }
+
+        // Make sure that the next buffer output does not still
+        // depend on fragments from the last one decoded.
+        PVMP4AudioDecoderResetBuffer(mDecoderBuf);
     } else {
         seekTimeUs = -1;
     }
diff --git a/media/libstagefright/codecs/mp3dec/MP3Decoder.cpp b/media/libstagefright/codecs/mp3dec/MP3Decoder.cpp
index c4a8280..59dd740 100644
--- a/media/libstagefright/codecs/mp3dec/MP3Decoder.cpp
+++ b/media/libstagefright/codecs/mp3dec/MP3Decoder.cpp
@@ -132,6 +132,10 @@ status_t MP3Decoder::read(
             mInputBuffer->release();
             mInputBuffer = NULL;
         }
+
+        // Make sure that the next buffer output does not still
+        // depend on fragments from the last one decoded.
+        pvmp3_InitDecoder(mConfig, mDecoderBuf);
     } else {
         seekTimeUs = -1;
     }